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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /media/libopus/src
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/libopus/src')
-rw-r--r--media/libopus/src/analysis.c983
-rw-r--r--media/libopus/src/analysis.h103
-rw-r--r--media/libopus/src/mapping_matrix.c378
-rw-r--r--media/libopus/src/mapping_matrix.h133
-rw-r--r--media/libopus/src/mlp.c144
-rw-r--r--media/libopus/src/mlp.h60
-rw-r--r--media/libopus/src/mlp_data.c672
-rw-r--r--media/libopus/src/opus.c356
-rw-r--r--media/libopus/src/opus_decoder.c1041
-rw-r--r--media/libopus/src/opus_encoder.c2780
-rw-r--r--media/libopus/src/opus_multistream.c92
-rw-r--r--media/libopus/src/opus_multistream_decoder.c552
-rw-r--r--media/libopus/src/opus_multistream_encoder.c1329
-rw-r--r--media/libopus/src/opus_private.h201
-rw-r--r--media/libopus/src/opus_projection_decoder.c258
-rw-r--r--media/libopus/src/opus_projection_encoder.c468
-rw-r--r--media/libopus/src/repacketizer.c349
-rw-r--r--media/libopus/src/tansig_table.h45
18 files changed, 9944 insertions, 0 deletions
diff --git a/media/libopus/src/analysis.c b/media/libopus/src/analysis.c
new file mode 100644
index 0000000000..058328f0fd
--- /dev/null
+++ b/media/libopus/src/analysis.c
@@ -0,0 +1,983 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define ANALYSIS_C
+
+#ifdef MLP_TRAINING
+#include <stdio.h>
+#endif
+
+#include "mathops.h"
+#include "kiss_fft.h"
+#include "celt.h"
+#include "modes.h"
+#include "arch.h"
+#include "quant_bands.h"
+#include "analysis.h"
+#include "mlp.h"
+#include "stack_alloc.h"
+#include "float_cast.h"
+
+#ifndef M_PI
+#define M_PI 3.141592653
+#endif
+
+#ifndef DISABLE_FLOAT_API
+
+#define TRANSITION_PENALTY 10
+
+static const float dct_table[128] = {
+ 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f,
+ 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f,
+ 0.351851f, 0.338330f, 0.311806f, 0.273300f, 0.224292f, 0.166664f, 0.102631f, 0.034654f,
+ -0.034654f,-0.102631f,-0.166664f,-0.224292f,-0.273300f,-0.311806f,-0.338330f,-0.351851f,
+ 0.346760f, 0.293969f, 0.196424f, 0.068975f,-0.068975f,-0.196424f,-0.293969f,-0.346760f,
+ -0.346760f,-0.293969f,-0.196424f,-0.068975f, 0.068975f, 0.196424f, 0.293969f, 0.346760f,
+ 0.338330f, 0.224292f, 0.034654f,-0.166664f,-0.311806f,-0.351851f,-0.273300f,-0.102631f,
+ 0.102631f, 0.273300f, 0.351851f, 0.311806f, 0.166664f,-0.034654f,-0.224292f,-0.338330f,
+ 0.326641f, 0.135299f,-0.135299f,-0.326641f,-0.326641f,-0.135299f, 0.135299f, 0.326641f,
+ 0.326641f, 0.135299f,-0.135299f,-0.326641f,-0.326641f,-0.135299f, 0.135299f, 0.326641f,
+ 0.311806f, 0.034654f,-0.273300f,-0.338330f,-0.102631f, 0.224292f, 0.351851f, 0.166664f,
+ -0.166664f,-0.351851f,-0.224292f, 0.102631f, 0.338330f, 0.273300f,-0.034654f,-0.311806f,
+ 0.293969f,-0.068975f,-0.346760f,-0.196424f, 0.196424f, 0.346760f, 0.068975f,-0.293969f,
+ -0.293969f, 0.068975f, 0.346760f, 0.196424f,-0.196424f,-0.346760f,-0.068975f, 0.293969f,
+ 0.273300f,-0.166664f,-0.338330f, 0.034654f, 0.351851f, 0.102631f,-0.311806f,-0.224292f,
+ 0.224292f, 0.311806f,-0.102631f,-0.351851f,-0.034654f, 0.338330f, 0.166664f,-0.273300f,
+};
+
+static const float analysis_window[240] = {
+ 0.000043f, 0.000171f, 0.000385f, 0.000685f, 0.001071f, 0.001541f, 0.002098f, 0.002739f,
+ 0.003466f, 0.004278f, 0.005174f, 0.006156f, 0.007222f, 0.008373f, 0.009607f, 0.010926f,
+ 0.012329f, 0.013815f, 0.015385f, 0.017037f, 0.018772f, 0.020590f, 0.022490f, 0.024472f,
+ 0.026535f, 0.028679f, 0.030904f, 0.033210f, 0.035595f, 0.038060f, 0.040604f, 0.043227f,
+ 0.045928f, 0.048707f, 0.051564f, 0.054497f, 0.057506f, 0.060591f, 0.063752f, 0.066987f,
+ 0.070297f, 0.073680f, 0.077136f, 0.080665f, 0.084265f, 0.087937f, 0.091679f, 0.095492f,
+ 0.099373f, 0.103323f, 0.107342f, 0.111427f, 0.115579f, 0.119797f, 0.124080f, 0.128428f,
+ 0.132839f, 0.137313f, 0.141849f, 0.146447f, 0.151105f, 0.155823f, 0.160600f, 0.165435f,
+ 0.170327f, 0.175276f, 0.180280f, 0.185340f, 0.190453f, 0.195619f, 0.200838f, 0.206107f,
+ 0.211427f, 0.216797f, 0.222215f, 0.227680f, 0.233193f, 0.238751f, 0.244353f, 0.250000f,
+ 0.255689f, 0.261421f, 0.267193f, 0.273005f, 0.278856f, 0.284744f, 0.290670f, 0.296632f,
+ 0.302628f, 0.308658f, 0.314721f, 0.320816f, 0.326941f, 0.333097f, 0.339280f, 0.345492f,
+ 0.351729f, 0.357992f, 0.364280f, 0.370590f, 0.376923f, 0.383277f, 0.389651f, 0.396044f,
+ 0.402455f, 0.408882f, 0.415325f, 0.421783f, 0.428254f, 0.434737f, 0.441231f, 0.447736f,
+ 0.454249f, 0.460770f, 0.467298f, 0.473832f, 0.480370f, 0.486912f, 0.493455f, 0.500000f,
+ 0.506545f, 0.513088f, 0.519630f, 0.526168f, 0.532702f, 0.539230f, 0.545751f, 0.552264f,
+ 0.558769f, 0.565263f, 0.571746f, 0.578217f, 0.584675f, 0.591118f, 0.597545f, 0.603956f,
+ 0.610349f, 0.616723f, 0.623077f, 0.629410f, 0.635720f, 0.642008f, 0.648271f, 0.654508f,
+ 0.660720f, 0.666903f, 0.673059f, 0.679184f, 0.685279f, 0.691342f, 0.697372f, 0.703368f,
+ 0.709330f, 0.715256f, 0.721144f, 0.726995f, 0.732807f, 0.738579f, 0.744311f, 0.750000f,
+ 0.755647f, 0.761249f, 0.766807f, 0.772320f, 0.777785f, 0.783203f, 0.788573f, 0.793893f,
+ 0.799162f, 0.804381f, 0.809547f, 0.814660f, 0.819720f, 0.824724f, 0.829673f, 0.834565f,
+ 0.839400f, 0.844177f, 0.848895f, 0.853553f, 0.858151f, 0.862687f, 0.867161f, 0.871572f,
+ 0.875920f, 0.880203f, 0.884421f, 0.888573f, 0.892658f, 0.896677f, 0.900627f, 0.904508f,
+ 0.908321f, 0.912063f, 0.915735f, 0.919335f, 0.922864f, 0.926320f, 0.929703f, 0.933013f,
+ 0.936248f, 0.939409f, 0.942494f, 0.945503f, 0.948436f, 0.951293f, 0.954072f, 0.956773f,
+ 0.959396f, 0.961940f, 0.964405f, 0.966790f, 0.969096f, 0.971321f, 0.973465f, 0.975528f,
+ 0.977510f, 0.979410f, 0.981228f, 0.982963f, 0.984615f, 0.986185f, 0.987671f, 0.989074f,
+ 0.990393f, 0.991627f, 0.992778f, 0.993844f, 0.994826f, 0.995722f, 0.996534f, 0.997261f,
+ 0.997902f, 0.998459f, 0.998929f, 0.999315f, 0.999615f, 0.999829f, 0.999957f, 1.000000f,
+};
+
+static const int tbands[NB_TBANDS+1] = {
+ 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 136, 160, 192, 240
+};
+
+#define NB_TONAL_SKIP_BANDS 9
+
+static opus_val32 silk_resampler_down2_hp(
+ opus_val32 *S, /* I/O State vector [ 2 ] */
+ opus_val32 *out, /* O Output signal [ floor(len/2) ] */
+ const opus_val32 *in, /* I Input signal [ len ] */
+ int inLen /* I Number of input samples */
+)
+{
+ int k, len2 = inLen/2;
+ opus_val32 in32, out32, out32_hp, Y, X;
+ opus_val64 hp_ener = 0;
+ /* Internal variables and state are in Q10 format */
+ for( k = 0; k < len2; k++ ) {
+ /* Convert to Q10 */
+ in32 = in[ 2 * k ];
+
+ /* All-pass section for even input sample */
+ Y = SUB32( in32, S[ 0 ] );
+ X = MULT16_32_Q15(QCONST16(0.6074371f, 15), Y);
+ out32 = ADD32( S[ 0 ], X );
+ S[ 0 ] = ADD32( in32, X );
+ out32_hp = out32;
+ /* Convert to Q10 */
+ in32 = in[ 2 * k + 1 ];
+
+ /* All-pass section for odd input sample, and add to output of previous section */
+ Y = SUB32( in32, S[ 1 ] );
+ X = MULT16_32_Q15(QCONST16(0.15063f, 15), Y);
+ out32 = ADD32( out32, S[ 1 ] );
+ out32 = ADD32( out32, X );
+ S[ 1 ] = ADD32( in32, X );
+
+ Y = SUB32( -in32, S[ 2 ] );
+ X = MULT16_32_Q15(QCONST16(0.15063f, 15), Y);
+ out32_hp = ADD32( out32_hp, S[ 2 ] );
+ out32_hp = ADD32( out32_hp, X );
+ S[ 2 ] = ADD32( -in32, X );
+
+ hp_ener += out32_hp*(opus_val64)out32_hp;
+ /* Add, convert back to int16 and store to output */
+ out[ k ] = HALF32(out32);
+ }
+#ifdef FIXED_POINT
+ /* len2 can be up to 480, so we shift by 8 more to make it fit. */
+ hp_ener = hp_ener >> (2*SIG_SHIFT + 8);
+#endif
+ return (opus_val32)hp_ener;
+}
+
+static opus_val32 downmix_and_resample(downmix_func downmix, const void *_x, opus_val32 *y, opus_val32 S[3], int subframe, int offset, int c1, int c2, int C, int Fs)
+{
+ VARDECL(opus_val32, tmp);
+ opus_val32 scale;
+ int j;
+ opus_val32 ret = 0;
+ SAVE_STACK;
+
+ if (subframe==0) return 0;
+ if (Fs == 48000)
+ {
+ subframe *= 2;
+ offset *= 2;
+ } else if (Fs == 16000) {
+ subframe = subframe*2/3;
+ offset = offset*2/3;
+ }
+ ALLOC(tmp, subframe, opus_val32);
+
+ downmix(_x, tmp, subframe, offset, c1, c2, C);
+#ifdef FIXED_POINT
+ scale = (1<<SIG_SHIFT);
+#else
+ scale = 1.f/32768;
+#endif
+ if (c2==-2)
+ scale /= C;
+ else if (c2>-1)
+ scale /= 2;
+ for (j=0;j<subframe;j++)
+ tmp[j] *= scale;
+ if (Fs == 48000)
+ {
+ ret = silk_resampler_down2_hp(S, y, tmp, subframe);
+ } else if (Fs == 24000) {
+ OPUS_COPY(y, tmp, subframe);
+ } else if (Fs == 16000) {
+ VARDECL(opus_val32, tmp3x);
+ ALLOC(tmp3x, 3*subframe, opus_val32);
+ /* Don't do this at home! This resampler is horrible and it's only (barely)
+ usable for the purpose of the analysis because we don't care about all
+ the aliasing between 8 kHz and 12 kHz. */
+ for (j=0;j<subframe;j++)
+ {
+ tmp3x[3*j] = tmp[j];
+ tmp3x[3*j+1] = tmp[j];
+ tmp3x[3*j+2] = tmp[j];
+ }
+ silk_resampler_down2_hp(S, y, tmp3x, 3*subframe);
+ }
+ RESTORE_STACK;
+ return ret;
+}
+
+void tonality_analysis_init(TonalityAnalysisState *tonal, opus_int32 Fs)
+{
+ /* Initialize reusable fields. */
+ tonal->arch = opus_select_arch();
+ tonal->Fs = Fs;
+ /* Clear remaining fields. */
+ tonality_analysis_reset(tonal);
+}
+
+void tonality_analysis_reset(TonalityAnalysisState *tonal)
+{
+ /* Clear non-reusable fields. */
+ char *start = (char*)&tonal->TONALITY_ANALYSIS_RESET_START;
+ OPUS_CLEAR(start, sizeof(TonalityAnalysisState) - (start - (char*)tonal));
+}
+
+void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len)
+{
+ int pos;
+ int curr_lookahead;
+ float tonality_max;
+ float tonality_avg;
+ int tonality_count;
+ int i;
+ int pos0;
+ float prob_avg;
+ float prob_count;
+ float prob_min, prob_max;
+ float vad_prob;
+ int mpos, vpos;
+ int bandwidth_span;
+
+ pos = tonal->read_pos;
+ curr_lookahead = tonal->write_pos-tonal->read_pos;
+ if (curr_lookahead<0)
+ curr_lookahead += DETECT_SIZE;
+
+ tonal->read_subframe += len/(tonal->Fs/400);
+ while (tonal->read_subframe>=8)
+ {
+ tonal->read_subframe -= 8;
+ tonal->read_pos++;
+ }
+ if (tonal->read_pos>=DETECT_SIZE)
+ tonal->read_pos-=DETECT_SIZE;
+
+ /* On long frames, look at the second analysis window rather than the first. */
+ if (len > tonal->Fs/50 && pos != tonal->write_pos)
+ {
+ pos++;
+ if (pos==DETECT_SIZE)
+ pos=0;
+ }
+ if (pos == tonal->write_pos)
+ pos--;
+ if (pos<0)
+ pos = DETECT_SIZE-1;
+ pos0 = pos;
+ OPUS_COPY(info_out, &tonal->info[pos], 1);
+ if (!info_out->valid)
+ return;
+ tonality_max = tonality_avg = info_out->tonality;
+ tonality_count = 1;
+ /* Look at the neighbouring frames and pick largest bandwidth found (to be safe). */
+ bandwidth_span = 6;
+ /* If possible, look ahead for a tone to compensate for the delay in the tone detector. */
+ for (i=0;i<3;i++)
+ {
+ pos++;
+ if (pos==DETECT_SIZE)
+ pos = 0;
+ if (pos == tonal->write_pos)
+ break;
+ tonality_max = MAX32(tonality_max, tonal->info[pos].tonality);
+ tonality_avg += tonal->info[pos].tonality;
+ tonality_count++;
+ info_out->bandwidth = IMAX(info_out->bandwidth, tonal->info[pos].bandwidth);
+ bandwidth_span--;
+ }
+ pos = pos0;
+ /* Look back in time to see if any has a wider bandwidth than the current frame. */
+ for (i=0;i<bandwidth_span;i++)
+ {
+ pos--;
+ if (pos < 0)
+ pos = DETECT_SIZE-1;
+ if (pos == tonal->write_pos)
+ break;
+ info_out->bandwidth = IMAX(info_out->bandwidth, tonal->info[pos].bandwidth);
+ }
+ info_out->tonality = MAX32(tonality_avg/tonality_count, tonality_max-.2f);
+
+ mpos = vpos = pos0;
+ /* If we have enough look-ahead, compensate for the ~5-frame delay in the music prob and
+ ~1 frame delay in the VAD prob. */
+ if (curr_lookahead > 15)
+ {
+ mpos += 5;
+ if (mpos>=DETECT_SIZE)
+ mpos -= DETECT_SIZE;
+ vpos += 1;
+ if (vpos>=DETECT_SIZE)
+ vpos -= DETECT_SIZE;
+ }
+
+ /* The following calculations attempt to minimize a "badness function"
+ for the transition. When switching from speech to music, the badness
+ of switching at frame k is
+ b_k = S*v_k + \sum_{i=0}^{k-1} v_i*(p_i - T)
+ where
+ v_i is the activity probability (VAD) at frame i,
+ p_i is the music probability at frame i
+ T is the probability threshold for switching
+ S is the penalty for switching during active audio rather than silence
+ the current frame has index i=0
+
+ Rather than apply badness to directly decide when to switch, what we compute
+ instead is the threshold for which the optimal switching point is now. When
+ considering whether to switch now (frame 0) or at frame k, we have:
+ S*v_0 = S*v_k + \sum_{i=0}^{k-1} v_i*(p_i - T)
+ which gives us:
+ T = ( \sum_{i=0}^{k-1} v_i*p_i + S*(v_k-v_0) ) / ( \sum_{i=0}^{k-1} v_i )
+ We take the min threshold across all positive values of k (up to the maximum
+ amount of lookahead we have) to give us the threshold for which the current
+ frame is the optimal switch point.
+
+ The last step is that we need to consider whether we want to switch at all.
+ For that we use the average of the music probability over the entire window.
+ If the threshold is higher than that average we're not going to
+ switch, so we compute a min with the average as well. The result of all these
+ min operations is music_prob_min, which gives the threshold for switching to music
+ if we're currently encoding for speech.
+
+ We do the exact opposite to compute music_prob_max which is used for switching
+ from music to speech.
+ */
+ prob_min = 1.f;
+ prob_max = 0.f;
+ vad_prob = tonal->info[vpos].activity_probability;
+ prob_count = MAX16(.1f, vad_prob);
+ prob_avg = MAX16(.1f, vad_prob)*tonal->info[mpos].music_prob;
+ while (1)
+ {
+ float pos_vad;
+ mpos++;
+ if (mpos==DETECT_SIZE)
+ mpos = 0;
+ if (mpos == tonal->write_pos)
+ break;
+ vpos++;
+ if (vpos==DETECT_SIZE)
+ vpos = 0;
+ if (vpos == tonal->write_pos)
+ break;
+ pos_vad = tonal->info[vpos].activity_probability;
+ prob_min = MIN16((prob_avg - TRANSITION_PENALTY*(vad_prob - pos_vad))/prob_count, prob_min);
+ prob_max = MAX16((prob_avg + TRANSITION_PENALTY*(vad_prob - pos_vad))/prob_count, prob_max);
+ prob_count += MAX16(.1f, pos_vad);
+ prob_avg += MAX16(.1f, pos_vad)*tonal->info[mpos].music_prob;
+ }
+ info_out->music_prob = prob_avg/prob_count;
+ prob_min = MIN16(prob_avg/prob_count, prob_min);
+ prob_max = MAX16(prob_avg/prob_count, prob_max);
+ prob_min = MAX16(prob_min, 0.f);
+ prob_max = MIN16(prob_max, 1.f);
+
+ /* If we don't have enough look-ahead, do our best to make a decent decision. */
+ if (curr_lookahead < 10)
+ {
+ float pmin, pmax;
+ pmin = prob_min;
+ pmax = prob_max;
+ pos = pos0;
+ /* Look for min/max in the past. */
+ for (i=0;i<IMIN(tonal->count-1, 15);i++)
+ {
+ pos--;
+ if (pos < 0)
+ pos = DETECT_SIZE-1;
+ pmin = MIN16(pmin, tonal->info[pos].music_prob);
+ pmax = MAX16(pmax, tonal->info[pos].music_prob);
+ }
+ /* Bias against switching on active audio. */
+ pmin = MAX16(0.f, pmin - .1f*vad_prob);
+ pmax = MIN16(1.f, pmax + .1f*vad_prob);
+ prob_min += (1.f-.1f*curr_lookahead)*(pmin - prob_min);
+ prob_max += (1.f-.1f*curr_lookahead)*(pmax - prob_max);
+ }
+ info_out->music_prob_min = prob_min;
+ info_out->music_prob_max = prob_max;
+
+ /* printf("%f %f %f %f %f\n", prob_min, prob_max, prob_avg/prob_count, vad_prob, info_out->music_prob); */
+}
+
+static const float std_feature_bias[9] = {
+ 5.684947f, 3.475288f, 1.770634f, 1.599784f, 3.773215f,
+ 2.163313f, 1.260756f, 1.116868f, 1.918795f
+};
+
+#define LEAKAGE_OFFSET 2.5f
+#define LEAKAGE_SLOPE 2.f
+
+#ifdef FIXED_POINT
+/* For fixed-point, the input is +/-2^15 shifted up by SIG_SHIFT, so we need to
+ compensate for that in the energy. */
+#define SCALE_COMPENS (1.f/((opus_int32)1<<(15+SIG_SHIFT)))
+#define SCALE_ENER(e) ((SCALE_COMPENS*SCALE_COMPENS)*(e))
+#else
+#define SCALE_ENER(e) (e)
+#endif
+
+#ifdef FIXED_POINT
+static int is_digital_silence32(const opus_val32* pcm, int frame_size, int channels, int lsb_depth)
+{
+ int silence = 0;
+ opus_val32 sample_max = 0;
+#ifdef MLP_TRAINING
+ return 0;
+#endif
+ sample_max = celt_maxabs32(pcm, frame_size*channels);
+
+ silence = (sample_max == 0);
+ (void)lsb_depth;
+ return silence;
+}
+#else
+#define is_digital_silence32(pcm, frame_size, channels, lsb_depth) is_digital_silence(pcm, frame_size, channels, lsb_depth)
+#endif
+
+static void tonality_analysis(TonalityAnalysisState *tonal, const CELTMode *celt_mode, const void *x, int len, int offset, int c1, int c2, int C, int lsb_depth, downmix_func downmix)
+{
+ int i, b;
+ const kiss_fft_state *kfft;
+ VARDECL(kiss_fft_cpx, in);
+ VARDECL(kiss_fft_cpx, out);
+ int N = 480, N2=240;
+ float * OPUS_RESTRICT A = tonal->angle;
+ float * OPUS_RESTRICT dA = tonal->d_angle;
+ float * OPUS_RESTRICT d2A = tonal->d2_angle;
+ VARDECL(float, tonality);
+ VARDECL(float, noisiness);
+ float band_tonality[NB_TBANDS];
+ float logE[NB_TBANDS];
+ float BFCC[8];
+ float features[25];
+ float frame_tonality;
+ float max_frame_tonality;
+ /*float tw_sum=0;*/
+ float frame_noisiness;
+ const float pi4 = (float)(M_PI*M_PI*M_PI*M_PI);
+ float slope=0;
+ float frame_stationarity;
+ float relativeE;
+ float frame_probs[2];
+ float alpha, alphaE, alphaE2;
+ float frame_loudness;
+ float bandwidth_mask;
+ int is_masked[NB_TBANDS+1];
+ int bandwidth=0;
+ float maxE = 0;
+ float noise_floor;
+ int remaining;
+ AnalysisInfo *info;
+ float hp_ener;
+ float tonality2[240];
+ float midE[8];
+ float spec_variability=0;
+ float band_log2[NB_TBANDS+1];
+ float leakage_from[NB_TBANDS+1];
+ float leakage_to[NB_TBANDS+1];
+ float layer_out[MAX_NEURONS];
+ float below_max_pitch;
+ float above_max_pitch;
+ int is_silence;
+ SAVE_STACK;
+
+ if (!tonal->initialized)
+ {
+ tonal->mem_fill = 240;
+ tonal->initialized = 1;
+ }
+ alpha = 1.f/IMIN(10, 1+tonal->count);
+ alphaE = 1.f/IMIN(25, 1+tonal->count);
+ /* Noise floor related decay for bandwidth detection: -2.2 dB/second */
+ alphaE2 = 1.f/IMIN(100, 1+tonal->count);
+ if (tonal->count <= 1) alphaE2 = 1;
+
+ if (tonal->Fs == 48000)
+ {
+ /* len and offset are now at 24 kHz. */
+ len/= 2;
+ offset /= 2;
+ } else if (tonal->Fs == 16000) {
+ len = 3*len/2;
+ offset = 3*offset/2;
+ }
+
+ kfft = celt_mode->mdct.kfft[0];
+ tonal->hp_ener_accum += (float)downmix_and_resample(downmix, x,
+ &tonal->inmem[tonal->mem_fill], tonal->downmix_state,
+ IMIN(len, ANALYSIS_BUF_SIZE-tonal->mem_fill), offset, c1, c2, C, tonal->Fs);
+ if (tonal->mem_fill+len < ANALYSIS_BUF_SIZE)
+ {
+ tonal->mem_fill += len;
+ /* Don't have enough to update the analysis */
+ RESTORE_STACK;
+ return;
+ }
+ hp_ener = tonal->hp_ener_accum;
+ info = &tonal->info[tonal->write_pos++];
+ if (tonal->write_pos>=DETECT_SIZE)
+ tonal->write_pos-=DETECT_SIZE;
+
+ is_silence = is_digital_silence32(tonal->inmem, ANALYSIS_BUF_SIZE, 1, lsb_depth);
+
+ ALLOC(in, 480, kiss_fft_cpx);
+ ALLOC(out, 480, kiss_fft_cpx);
+ ALLOC(tonality, 240, float);
+ ALLOC(noisiness, 240, float);
+ for (i=0;i<N2;i++)
+ {
+ float w = analysis_window[i];
+ in[i].r = (kiss_fft_scalar)(w*tonal->inmem[i]);
+ in[i].i = (kiss_fft_scalar)(w*tonal->inmem[N2+i]);
+ in[N-i-1].r = (kiss_fft_scalar)(w*tonal->inmem[N-i-1]);
+ in[N-i-1].i = (kiss_fft_scalar)(w*tonal->inmem[N+N2-i-1]);
+ }
+ OPUS_MOVE(tonal->inmem, tonal->inmem+ANALYSIS_BUF_SIZE-240, 240);
+ remaining = len - (ANALYSIS_BUF_SIZE-tonal->mem_fill);
+ tonal->hp_ener_accum = (float)downmix_and_resample(downmix, x,
+ &tonal->inmem[240], tonal->downmix_state, remaining,
+ offset+ANALYSIS_BUF_SIZE-tonal->mem_fill, c1, c2, C, tonal->Fs);
+ tonal->mem_fill = 240 + remaining;
+ if (is_silence)
+ {
+ /* On silence, copy the previous analysis. */
+ int prev_pos = tonal->write_pos-2;
+ if (prev_pos < 0)
+ prev_pos += DETECT_SIZE;
+ OPUS_COPY(info, &tonal->info[prev_pos], 1);
+ RESTORE_STACK;
+ return;
+ }
+ opus_fft(kfft, in, out, tonal->arch);
+#ifndef FIXED_POINT
+ /* If there's any NaN on the input, the entire output will be NaN, so we only need to check one value. */
+ if (celt_isnan(out[0].r))
+ {
+ info->valid = 0;
+ RESTORE_STACK;
+ return;
+ }
+#endif
+
+ for (i=1;i<N2;i++)
+ {
+ float X1r, X2r, X1i, X2i;
+ float angle, d_angle, d2_angle;
+ float angle2, d_angle2, d2_angle2;
+ float mod1, mod2, avg_mod;
+ X1r = (float)out[i].r+out[N-i].r;
+ X1i = (float)out[i].i-out[N-i].i;
+ X2r = (float)out[i].i+out[N-i].i;
+ X2i = (float)out[N-i].r-out[i].r;
+
+ angle = (float)(.5f/M_PI)*fast_atan2f(X1i, X1r);
+ d_angle = angle - A[i];
+ d2_angle = d_angle - dA[i];
+
+ angle2 = (float)(.5f/M_PI)*fast_atan2f(X2i, X2r);
+ d_angle2 = angle2 - angle;
+ d2_angle2 = d_angle2 - d_angle;
+
+ mod1 = d2_angle - (float)float2int(d2_angle);
+ noisiness[i] = ABS16(mod1);
+ mod1 *= mod1;
+ mod1 *= mod1;
+
+ mod2 = d2_angle2 - (float)float2int(d2_angle2);
+ noisiness[i] += ABS16(mod2);
+ mod2 *= mod2;
+ mod2 *= mod2;
+
+ avg_mod = .25f*(d2A[i]+mod1+2*mod2);
+ /* This introduces an extra delay of 2 frames in the detection. */
+ tonality[i] = 1.f/(1.f+40.f*16.f*pi4*avg_mod)-.015f;
+ /* No delay on this detection, but it's less reliable. */
+ tonality2[i] = 1.f/(1.f+40.f*16.f*pi4*mod2)-.015f;
+
+ A[i] = angle2;
+ dA[i] = d_angle2;
+ d2A[i] = mod2;
+ }
+ for (i=2;i<N2-1;i++)
+ {
+ float tt = MIN32(tonality2[i], MAX32(tonality2[i-1], tonality2[i+1]));
+ tonality[i] = .9f*MAX32(tonality[i], tt-.1f);
+ }
+ frame_tonality = 0;
+ max_frame_tonality = 0;
+ /*tw_sum = 0;*/
+ info->activity = 0;
+ frame_noisiness = 0;
+ frame_stationarity = 0;
+ if (!tonal->count)
+ {
+ for (b=0;b<NB_TBANDS;b++)
+ {
+ tonal->lowE[b] = 1e10;
+ tonal->highE[b] = -1e10;
+ }
+ }
+ relativeE = 0;
+ frame_loudness = 0;
+ /* The energy of the very first band is special because of DC. */
+ {
+ float E = 0;
+ float X1r, X2r;
+ X1r = 2*(float)out[0].r;
+ X2r = 2*(float)out[0].i;
+ E = X1r*X1r + X2r*X2r;
+ for (i=1;i<4;i++)
+ {
+ float binE = out[i].r*(float)out[i].r + out[N-i].r*(float)out[N-i].r
+ + out[i].i*(float)out[i].i + out[N-i].i*(float)out[N-i].i;
+ E += binE;
+ }
+ E = SCALE_ENER(E);
+ band_log2[0] = .5f*1.442695f*(float)log(E+1e-10f);
+ }
+ for (b=0;b<NB_TBANDS;b++)
+ {
+ float E=0, tE=0, nE=0;
+ float L1, L2;
+ float stationarity;
+ for (i=tbands[b];i<tbands[b+1];i++)
+ {
+ float binE = out[i].r*(float)out[i].r + out[N-i].r*(float)out[N-i].r
+ + out[i].i*(float)out[i].i + out[N-i].i*(float)out[N-i].i;
+ binE = SCALE_ENER(binE);
+ E += binE;
+ tE += binE*MAX32(0, tonality[i]);
+ nE += binE*2.f*(.5f-noisiness[i]);
+ }
+#ifndef FIXED_POINT
+ /* Check for extreme band energies that could cause NaNs later. */
+ if (!(E<1e9f) || celt_isnan(E))
+ {
+ info->valid = 0;
+ RESTORE_STACK;
+ return;
+ }
+#endif
+
+ tonal->E[tonal->E_count][b] = E;
+ frame_noisiness += nE/(1e-15f+E);
+
+ frame_loudness += (float)sqrt(E+1e-10f);
+ logE[b] = (float)log(E+1e-10f);
+ band_log2[b+1] = .5f*1.442695f*(float)log(E+1e-10f);
+ tonal->logE[tonal->E_count][b] = logE[b];
+ if (tonal->count==0)
+ tonal->highE[b] = tonal->lowE[b] = logE[b];
+ if (tonal->highE[b] > tonal->lowE[b] + 7.5)
+ {
+ if (tonal->highE[b] - logE[b] > logE[b] - tonal->lowE[b])
+ tonal->highE[b] -= .01f;
+ else
+ tonal->lowE[b] += .01f;
+ }
+ if (logE[b] > tonal->highE[b])
+ {
+ tonal->highE[b] = logE[b];
+ tonal->lowE[b] = MAX32(tonal->highE[b]-15, tonal->lowE[b]);
+ } else if (logE[b] < tonal->lowE[b])
+ {
+ tonal->lowE[b] = logE[b];
+ tonal->highE[b] = MIN32(tonal->lowE[b]+15, tonal->highE[b]);
+ }
+ relativeE += (logE[b]-tonal->lowE[b])/(1e-5f + (tonal->highE[b]-tonal->lowE[b]));
+
+ L1=L2=0;
+ for (i=0;i<NB_FRAMES;i++)
+ {
+ L1 += (float)sqrt(tonal->E[i][b]);
+ L2 += tonal->E[i][b];
+ }
+
+ stationarity = MIN16(0.99f,L1/(float)sqrt(1e-15+NB_FRAMES*L2));
+ stationarity *= stationarity;
+ stationarity *= stationarity;
+ frame_stationarity += stationarity;
+ /*band_tonality[b] = tE/(1e-15+E)*/;
+ band_tonality[b] = MAX16(tE/(1e-15f+E), stationarity*tonal->prev_band_tonality[b]);
+#if 0
+ if (b>=NB_TONAL_SKIP_BANDS)
+ {
+ frame_tonality += tweight[b]*band_tonality[b];
+ tw_sum += tweight[b];
+ }
+#else
+ frame_tonality += band_tonality[b];
+ if (b>=NB_TBANDS-NB_TONAL_SKIP_BANDS)
+ frame_tonality -= band_tonality[b-NB_TBANDS+NB_TONAL_SKIP_BANDS];
+#endif
+ max_frame_tonality = MAX16(max_frame_tonality, (1.f+.03f*(b-NB_TBANDS))*frame_tonality);
+ slope += band_tonality[b]*(b-8);
+ /*printf("%f %f ", band_tonality[b], stationarity);*/
+ tonal->prev_band_tonality[b] = band_tonality[b];
+ }
+
+ leakage_from[0] = band_log2[0];
+ leakage_to[0] = band_log2[0] - LEAKAGE_OFFSET;
+ for (b=1;b<NB_TBANDS+1;b++)
+ {
+ float leak_slope = LEAKAGE_SLOPE*(tbands[b]-tbands[b-1])/4;
+ leakage_from[b] = MIN16(leakage_from[b-1]+leak_slope, band_log2[b]);
+ leakage_to[b] = MAX16(leakage_to[b-1]-leak_slope, band_log2[b]-LEAKAGE_OFFSET);
+ }
+ for (b=NB_TBANDS-2;b>=0;b--)
+ {
+ float leak_slope = LEAKAGE_SLOPE*(tbands[b+1]-tbands[b])/4;
+ leakage_from[b] = MIN16(leakage_from[b+1]+leak_slope, leakage_from[b]);
+ leakage_to[b] = MAX16(leakage_to[b+1]-leak_slope, leakage_to[b]);
+ }
+ celt_assert(NB_TBANDS+1 <= LEAK_BANDS);
+ for (b=0;b<NB_TBANDS+1;b++)
+ {
+ /* leak_boost[] is made up of two terms. The first, based on leakage_to[],
+ represents the boost needed to overcome the amount of analysis leakage
+ cause in a weaker band b by louder neighbouring bands.
+ The second, based on leakage_from[], applies to a loud band b for
+ which the quantization noise causes synthesis leakage to the weaker
+ neighbouring bands. */
+ float boost = MAX16(0, leakage_to[b] - band_log2[b]) +
+ MAX16(0, band_log2[b] - (leakage_from[b]+LEAKAGE_OFFSET));
+ info->leak_boost[b] = IMIN(255, (int)floor(.5 + 64.f*boost));
+ }
+ for (;b<LEAK_BANDS;b++) info->leak_boost[b] = 0;
+
+ for (i=0;i<NB_FRAMES;i++)
+ {
+ int j;
+ float mindist = 1e15f;
+ for (j=0;j<NB_FRAMES;j++)
+ {
+ int k;
+ float dist=0;
+ for (k=0;k<NB_TBANDS;k++)
+ {
+ float tmp;
+ tmp = tonal->logE[i][k] - tonal->logE[j][k];
+ dist += tmp*tmp;
+ }
+ if (j!=i)
+ mindist = MIN32(mindist, dist);
+ }
+ spec_variability += mindist;
+ }
+ spec_variability = (float)sqrt(spec_variability/NB_FRAMES/NB_TBANDS);
+ bandwidth_mask = 0;
+ bandwidth = 0;
+ maxE = 0;
+ noise_floor = 5.7e-4f/(1<<(IMAX(0,lsb_depth-8)));
+ noise_floor *= noise_floor;
+ below_max_pitch=0;
+ above_max_pitch=0;
+ for (b=0;b<NB_TBANDS;b++)
+ {
+ float E=0;
+ float Em;
+ int band_start, band_end;
+ /* Keep a margin of 300 Hz for aliasing */
+ band_start = tbands[b];
+ band_end = tbands[b+1];
+ for (i=band_start;i<band_end;i++)
+ {
+ float binE = out[i].r*(float)out[i].r + out[N-i].r*(float)out[N-i].r
+ + out[i].i*(float)out[i].i + out[N-i].i*(float)out[N-i].i;
+ E += binE;
+ }
+ E = SCALE_ENER(E);
+ maxE = MAX32(maxE, E);
+ if (band_start < 64)
+ {
+ below_max_pitch += E;
+ } else {
+ above_max_pitch += E;
+ }
+ tonal->meanE[b] = MAX32((1-alphaE2)*tonal->meanE[b], E);
+ Em = MAX32(E, tonal->meanE[b]);
+ /* Consider the band "active" only if all these conditions are met:
+ 1) less than 90 dB below the peak band (maximal masking possible considering
+ both the ATH and the loudness-dependent slope of the spreading function)
+ 2) above the PCM quantization noise floor
+ We use b+1 because the first CELT band isn't included in tbands[]
+ */
+ if (E*1e9f > maxE && (Em > 3*noise_floor*(band_end-band_start) || E > noise_floor*(band_end-band_start)))
+ bandwidth = b+1;
+ /* Check if the band is masked (see below). */
+ is_masked[b] = E < (tonal->prev_bandwidth >= b+1 ? .01f : .05f)*bandwidth_mask;
+ /* Use a simple follower with 13 dB/Bark slope for spreading function. */
+ bandwidth_mask = MAX32(.05f*bandwidth_mask, E);
+ }
+ /* Special case for the last two bands, for which we don't have spectrum but only
+ the energy above 12 kHz. The difficulty here is that the high-pass we use
+ leaks some LF energy, so we need to increase the threshold without accidentally cutting
+ off the band. */
+ if (tonal->Fs == 48000) {
+ float noise_ratio;
+ float Em;
+ float E = hp_ener*(1.f/(60*60));
+ noise_ratio = tonal->prev_bandwidth==20 ? 10.f : 30.f;
+
+#ifdef FIXED_POINT
+ /* silk_resampler_down2_hp() shifted right by an extra 8 bits. */
+ E *= 256.f*(1.f/Q15ONE)*(1.f/Q15ONE);
+#endif
+ above_max_pitch += E;
+ tonal->meanE[b] = MAX32((1-alphaE2)*tonal->meanE[b], E);
+ Em = MAX32(E, tonal->meanE[b]);
+ if (Em > 3*noise_ratio*noise_floor*160 || E > noise_ratio*noise_floor*160)
+ bandwidth = 20;
+ /* Check if the band is masked (see below). */
+ is_masked[b] = E < (tonal->prev_bandwidth == 20 ? .01f : .05f)*bandwidth_mask;
+ }
+ if (above_max_pitch > below_max_pitch)
+ info->max_pitch_ratio = below_max_pitch/above_max_pitch;
+ else
+ info->max_pitch_ratio = 1;
+ /* In some cases, resampling aliasing can create a small amount of energy in the first band
+ being cut. So if the last band is masked, we don't include it. */
+ if (bandwidth == 20 && is_masked[NB_TBANDS])
+ bandwidth-=2;
+ else if (bandwidth > 0 && bandwidth <= NB_TBANDS && is_masked[bandwidth-1])
+ bandwidth--;
+ if (tonal->count<=2)
+ bandwidth = 20;
+ frame_loudness = 20*(float)log10(frame_loudness);
+ tonal->Etracker = MAX32(tonal->Etracker-.003f, frame_loudness);
+ tonal->lowECount *= (1-alphaE);
+ if (frame_loudness < tonal->Etracker-30)
+ tonal->lowECount += alphaE;
+
+ for (i=0;i<8;i++)
+ {
+ float sum=0;
+ for (b=0;b<16;b++)
+ sum += dct_table[i*16+b]*logE[b];
+ BFCC[i] = sum;
+ }
+ for (i=0;i<8;i++)
+ {
+ float sum=0;
+ for (b=0;b<16;b++)
+ sum += dct_table[i*16+b]*.5f*(tonal->highE[b]+tonal->lowE[b]);
+ midE[i] = sum;
+ }
+
+ frame_stationarity /= NB_TBANDS;
+ relativeE /= NB_TBANDS;
+ if (tonal->count<10)
+ relativeE = .5f;
+ frame_noisiness /= NB_TBANDS;
+#if 1
+ info->activity = frame_noisiness + (1-frame_noisiness)*relativeE;
+#else
+ info->activity = .5*(1+frame_noisiness-frame_stationarity);
+#endif
+ frame_tonality = (max_frame_tonality/(NB_TBANDS-NB_TONAL_SKIP_BANDS));
+ frame_tonality = MAX16(frame_tonality, tonal->prev_tonality*.8f);
+ tonal->prev_tonality = frame_tonality;
+
+ slope /= 8*8;
+ info->tonality_slope = slope;
+
+ tonal->E_count = (tonal->E_count+1)%NB_FRAMES;
+ tonal->count = IMIN(tonal->count+1, ANALYSIS_COUNT_MAX);
+ info->tonality = frame_tonality;
+
+ for (i=0;i<4;i++)
+ features[i] = -0.12299f*(BFCC[i]+tonal->mem[i+24]) + 0.49195f*(tonal->mem[i]+tonal->mem[i+16]) + 0.69693f*tonal->mem[i+8] - 1.4349f*tonal->cmean[i];
+
+ for (i=0;i<4;i++)
+ tonal->cmean[i] = (1-alpha)*tonal->cmean[i] + alpha*BFCC[i];
+
+ for (i=0;i<4;i++)
+ features[4+i] = 0.63246f*(BFCC[i]-tonal->mem[i+24]) + 0.31623f*(tonal->mem[i]-tonal->mem[i+16]);
+ for (i=0;i<3;i++)
+ features[8+i] = 0.53452f*(BFCC[i]+tonal->mem[i+24]) - 0.26726f*(tonal->mem[i]+tonal->mem[i+16]) -0.53452f*tonal->mem[i+8];
+
+ if (tonal->count > 5)
+ {
+ for (i=0;i<9;i++)
+ tonal->std[i] = (1-alpha)*tonal->std[i] + alpha*features[i]*features[i];
+ }
+ for (i=0;i<4;i++)
+ features[i] = BFCC[i]-midE[i];
+
+ for (i=0;i<8;i++)
+ {
+ tonal->mem[i+24] = tonal->mem[i+16];
+ tonal->mem[i+16] = tonal->mem[i+8];
+ tonal->mem[i+8] = tonal->mem[i];
+ tonal->mem[i] = BFCC[i];
+ }
+ for (i=0;i<9;i++)
+ features[11+i] = (float)sqrt(tonal->std[i]) - std_feature_bias[i];
+ features[18] = spec_variability - 0.78f;
+ features[20] = info->tonality - 0.154723f;
+ features[21] = info->activity - 0.724643f;
+ features[22] = frame_stationarity - 0.743717f;
+ features[23] = info->tonality_slope + 0.069216f;
+ features[24] = tonal->lowECount - 0.067930f;
+
+ compute_dense(&layer0, layer_out, features);
+ compute_gru(&layer1, tonal->rnn_state, layer_out);
+ compute_dense(&layer2, frame_probs, tonal->rnn_state);
+
+ /* Probability of speech or music vs noise */
+ info->activity_probability = frame_probs[1];
+ info->music_prob = frame_probs[0];
+
+ /*printf("%f %f %f\n", frame_probs[0], frame_probs[1], info->music_prob);*/
+#ifdef MLP_TRAINING
+ for (i=0;i<25;i++)
+ printf("%f ", features[i]);
+ printf("\n");
+#endif
+
+ info->bandwidth = bandwidth;
+ tonal->prev_bandwidth = bandwidth;
+ /*printf("%d %d\n", info->bandwidth, info->opus_bandwidth);*/
+ info->noisiness = frame_noisiness;
+ info->valid = 1;
+ RESTORE_STACK;
+}
+
+void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm,
+ int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs,
+ int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info)
+{
+ int offset;
+ int pcm_len;
+
+ analysis_frame_size -= analysis_frame_size&1;
+ if (analysis_pcm != NULL)
+ {
+ /* Avoid overflow/wrap-around of the analysis buffer */
+ analysis_frame_size = IMIN((DETECT_SIZE-5)*Fs/50, analysis_frame_size);
+
+ pcm_len = analysis_frame_size - analysis->analysis_offset;
+ offset = analysis->analysis_offset;
+ while (pcm_len>0) {
+ tonality_analysis(analysis, celt_mode, analysis_pcm, IMIN(Fs/50, pcm_len), offset, c1, c2, C, lsb_depth, downmix);
+ offset += Fs/50;
+ pcm_len -= Fs/50;
+ }
+ analysis->analysis_offset = analysis_frame_size;
+
+ analysis->analysis_offset -= frame_size;
+ }
+
+ tonality_get_info(analysis, analysis_info, frame_size);
+}
+
+#endif /* DISABLE_FLOAT_API */
diff --git a/media/libopus/src/analysis.h b/media/libopus/src/analysis.h
new file mode 100644
index 0000000000..0b66555f21
--- /dev/null
+++ b/media/libopus/src/analysis.h
@@ -0,0 +1,103 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef ANALYSIS_H
+#define ANALYSIS_H
+
+#include "celt.h"
+#include "opus_private.h"
+#include "mlp.h"
+
+#define NB_FRAMES 8
+#define NB_TBANDS 18
+#define ANALYSIS_BUF_SIZE 720 /* 30 ms at 24 kHz */
+
+/* At that point we can stop counting frames because it no longer matters. */
+#define ANALYSIS_COUNT_MAX 10000
+
+#define DETECT_SIZE 100
+
+/* Uncomment this to print the MLP features on stdout. */
+/*#define MLP_TRAINING*/
+
+typedef struct {
+ int arch;
+ int application;
+ opus_int32 Fs;
+#define TONALITY_ANALYSIS_RESET_START angle
+ float angle[240];
+ float d_angle[240];
+ float d2_angle[240];
+ opus_val32 inmem[ANALYSIS_BUF_SIZE];
+ int mem_fill; /* number of usable samples in the buffer */
+ float prev_band_tonality[NB_TBANDS];
+ float prev_tonality;
+ int prev_bandwidth;
+ float E[NB_FRAMES][NB_TBANDS];
+ float logE[NB_FRAMES][NB_TBANDS];
+ float lowE[NB_TBANDS];
+ float highE[NB_TBANDS];
+ float meanE[NB_TBANDS+1];
+ float mem[32];
+ float cmean[8];
+ float std[9];
+ float Etracker;
+ float lowECount;
+ int E_count;
+ int count;
+ int analysis_offset;
+ int write_pos;
+ int read_pos;
+ int read_subframe;
+ float hp_ener_accum;
+ int initialized;
+ float rnn_state[MAX_NEURONS];
+ opus_val32 downmix_state[3];
+ AnalysisInfo info[DETECT_SIZE];
+} TonalityAnalysisState;
+
+/** Initialize a TonalityAnalysisState struct.
+ *
+ * This performs some possibly slow initialization steps which should
+ * not be repeated every analysis step. No allocated memory is retained
+ * by the state struct, so no cleanup call is required.
+ */
+void tonality_analysis_init(TonalityAnalysisState *analysis, opus_int32 Fs);
+
+/** Reset a TonalityAnalysisState stuct.
+ *
+ * Call this when there's a discontinuity in the data.
+ */
+void tonality_analysis_reset(TonalityAnalysisState *analysis);
+
+void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len);
+
+void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm,
+ int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs,
+ int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info);
+
+#endif
diff --git a/media/libopus/src/mapping_matrix.c b/media/libopus/src/mapping_matrix.c
new file mode 100644
index 0000000000..31298af057
--- /dev/null
+++ b/media/libopus/src/mapping_matrix.c
@@ -0,0 +1,378 @@
+/* Copyright (c) 2017 Google Inc.
+ Written by Andrew Allen */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "arch.h"
+#include "float_cast.h"
+#include "opus_private.h"
+#include "opus_defines.h"
+#include "mapping_matrix.h"
+
+#define MATRIX_INDEX(nb_rows, row, col) (nb_rows * col + row)
+
+opus_int32 mapping_matrix_get_size(int rows, int cols)
+{
+ opus_int32 size;
+
+ /* Mapping Matrix must only support up to 255 channels in or out.
+ * Additionally, the total cell count must be <= 65004 octets in order
+ * for the matrix to be stored in an OGG header.
+ */
+ if (rows > 255 || cols > 255)
+ return 0;
+ size = rows * (opus_int32)cols * sizeof(opus_int16);
+ if (size > 65004)
+ return 0;
+
+ return align(sizeof(MappingMatrix)) + align(size);
+}
+
+opus_int16 *mapping_matrix_get_data(const MappingMatrix *matrix)
+{
+ /* void* cast avoids clang -Wcast-align warning */
+ return (opus_int16*)(void*)((char*)matrix + align(sizeof(MappingMatrix)));
+}
+
+void mapping_matrix_init(MappingMatrix * const matrix,
+ int rows, int cols, int gain, const opus_int16 *data, opus_int32 data_size)
+{
+ int i;
+ opus_int16 *ptr;
+
+#if !defined(ENABLE_ASSERTIONS)
+ (void)data_size;
+#endif
+ celt_assert(align(data_size) == align(rows * cols * sizeof(opus_int16)));
+
+ matrix->rows = rows;
+ matrix->cols = cols;
+ matrix->gain = gain;
+ ptr = mapping_matrix_get_data(matrix);
+ for (i = 0; i < rows * cols; i++)
+ {
+ ptr[i] = data[i];
+ }
+}
+
+#ifndef DISABLE_FLOAT_API
+void mapping_matrix_multiply_channel_in_float(
+ const MappingMatrix *matrix,
+ const float *input,
+ int input_rows,
+ opus_val16 *output,
+ int output_row,
+ int output_rows,
+ int frame_size)
+{
+ /* Matrix data is ordered col-wise. */
+ opus_int16* matrix_data;
+ int i, col;
+
+ celt_assert(input_rows <= matrix->cols && output_rows <= matrix->rows);
+
+ matrix_data = mapping_matrix_get_data(matrix);
+
+ for (i = 0; i < frame_size; i++)
+ {
+ float tmp = 0;
+ for (col = 0; col < input_rows; col++)
+ {
+ tmp +=
+ matrix_data[MATRIX_INDEX(matrix->rows, output_row, col)] *
+ input[MATRIX_INDEX(input_rows, col, i)];
+ }
+#if defined(FIXED_POINT)
+ output[output_rows * i] = FLOAT2INT16((1/32768.f)*tmp);
+#else
+ output[output_rows * i] = (1/32768.f)*tmp;
+#endif
+ }
+}
+
+void mapping_matrix_multiply_channel_out_float(
+ const MappingMatrix *matrix,
+ const opus_val16 *input,
+ int input_row,
+ int input_rows,
+ float *output,
+ int output_rows,
+ int frame_size
+)
+{
+ /* Matrix data is ordered col-wise. */
+ opus_int16* matrix_data;
+ int i, row;
+ float input_sample;
+
+ celt_assert(input_rows <= matrix->cols && output_rows <= matrix->rows);
+
+ matrix_data = mapping_matrix_get_data(matrix);
+
+ for (i = 0; i < frame_size; i++)
+ {
+#if defined(FIXED_POINT)
+ input_sample = (1/32768.f)*input[input_rows * i];
+#else
+ input_sample = input[input_rows * i];
+#endif
+ for (row = 0; row < output_rows; row++)
+ {
+ float tmp =
+ (1/32768.f)*matrix_data[MATRIX_INDEX(matrix->rows, row, input_row)] *
+ input_sample;
+ output[MATRIX_INDEX(output_rows, row, i)] += tmp;
+ }
+ }
+}
+#endif /* DISABLE_FLOAT_API */
+
+void mapping_matrix_multiply_channel_in_short(
+ const MappingMatrix *matrix,
+ const opus_int16 *input,
+ int input_rows,
+ opus_val16 *output,
+ int output_row,
+ int output_rows,
+ int frame_size)
+{
+ /* Matrix data is ordered col-wise. */
+ opus_int16* matrix_data;
+ int i, col;
+
+ celt_assert(input_rows <= matrix->cols && output_rows <= matrix->rows);
+
+ matrix_data = mapping_matrix_get_data(matrix);
+
+ for (i = 0; i < frame_size; i++)
+ {
+ opus_val32 tmp = 0;
+ for (col = 0; col < input_rows; col++)
+ {
+#if defined(FIXED_POINT)
+ tmp +=
+ ((opus_int32)matrix_data[MATRIX_INDEX(matrix->rows, output_row, col)] *
+ (opus_int32)input[MATRIX_INDEX(input_rows, col, i)]) >> 8;
+#else
+ tmp +=
+ matrix_data[MATRIX_INDEX(matrix->rows, output_row, col)] *
+ input[MATRIX_INDEX(input_rows, col, i)];
+#endif
+ }
+#if defined(FIXED_POINT)
+ output[output_rows * i] = (opus_int16)((tmp + 64) >> 7);
+#else
+ output[output_rows * i] = (1/(32768.f*32768.f))*tmp;
+#endif
+ }
+}
+
+void mapping_matrix_multiply_channel_out_short(
+ const MappingMatrix *matrix,
+ const opus_val16 *input,
+ int input_row,
+ int input_rows,
+ opus_int16 *output,
+ int output_rows,
+ int frame_size)
+{
+ /* Matrix data is ordered col-wise. */
+ opus_int16* matrix_data;
+ int i, row;
+ opus_int32 input_sample;
+
+ celt_assert(input_rows <= matrix->cols && output_rows <= matrix->rows);
+
+ matrix_data = mapping_matrix_get_data(matrix);
+
+ for (i = 0; i < frame_size; i++)
+ {
+#if defined(FIXED_POINT)
+ input_sample = (opus_int32)input[input_rows * i];
+#else
+ input_sample = (opus_int32)FLOAT2INT16(input[input_rows * i]);
+#endif
+ for (row = 0; row < output_rows; row++)
+ {
+ opus_int32 tmp =
+ (opus_int32)matrix_data[MATRIX_INDEX(matrix->rows, row, input_row)] *
+ input_sample;
+ output[MATRIX_INDEX(output_rows, row, i)] += (tmp + 16384) >> 15;
+ }
+ }
+}
+
+const MappingMatrix mapping_matrix_foa_mixing = { 6, 6, 0 };
+const opus_int16 mapping_matrix_foa_mixing_data[36] = {
+ 16384, 0, -16384, 23170, 0, 0, 16384, 23170,
+ 16384, 0, 0, 0, 16384, 0, -16384, -23170,
+ 0, 0, 16384, -23170, 16384, 0, 0, 0,
+ 0, 0, 0, 0, 32767, 0, 0, 0,
+ 0, 0, 0, 32767
+};
+
+const MappingMatrix mapping_matrix_soa_mixing = { 11, 11, 0 };
+const opus_int16 mapping_matrix_soa_mixing_data[121] = {
+ 10923, 7723, 13377, -13377, 11585, 9459, 7723, -16384,
+ -6689, 0, 0, 10923, 7723, 13377, 13377, -11585,
+ 9459, 7723, 16384, -6689, 0, 0, 10923, -15447,
+ 13377, 0, 0, -18919, 7723, 0, 13377, 0,
+ 0, 10923, 7723, -13377, -13377, 11585, -9459, 7723,
+ 16384, -6689, 0, 0, 10923, -7723, 0, 13377,
+ -16384, 0, -15447, 0, 9459, 0, 0, 10923,
+ -7723, 0, -13377, 16384, 0, -15447, 0, 9459,
+ 0, 0, 10923, 15447, 0, 0, 0, 0,
+ -15447, 0, -18919, 0, 0, 10923, 7723, -13377,
+ 13377, -11585, -9459, 7723, -16384, -6689, 0, 0,
+ 10923, -15447, -13377, 0, 0, 18919, 7723, 0,
+ 13377, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 32767, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 32767
+};
+
+const MappingMatrix mapping_matrix_toa_mixing = { 18, 18, 0 };
+const opus_int16 mapping_matrix_toa_mixing_data[324] = {
+ 8208, 0, -881, 14369, 0, 0, -8192, -4163,
+ 13218, 0, 0, 0, 11095, -8836, -6218, 14833,
+ 0, 0, 8208, -10161, 881, 10161, -13218, -2944,
+ -8192, 2944, 0, -10488, -6218, 6248, -11095, -6248,
+ 0, -10488, 0, 0, 8208, 10161, 881, -10161,
+ -13218, 2944, -8192, -2944, 0, 10488, -6218, -6248,
+ -11095, 6248, 0, 10488, 0, 0, 8176, 5566,
+ -11552, 5566, 9681, -11205, 8192, -11205, 0, 4920,
+ -15158, 9756, -3334, 9756, 0, -4920, 0, 0,
+ 8176, 7871, 11552, 0, 0, 15846, 8192, 0,
+ -9681, -6958, 0, 13797, 3334, 0, -15158, 0,
+ 0, 0, 8176, 0, 11552, 7871, 0, 0,
+ 8192, 15846, 9681, 0, 0, 0, 3334, 13797,
+ 15158, 6958, 0, 0, 8176, 5566, -11552, -5566,
+ -9681, -11205, 8192, 11205, 0, 4920, 15158, 9756,
+ -3334, -9756, 0, 4920, 0, 0, 8208, 14369,
+ -881, 0, 0, -4163, -8192, 0, -13218, -14833,
+ 0, -8836, 11095, 0, 6218, 0, 0, 0,
+ 8208, 10161, 881, 10161, 13218, 2944, -8192, 2944,
+ 0, 10488, 6218, -6248, -11095, -6248, 0, -10488,
+ 0, 0, 8208, -14369, -881, 0, 0, 4163,
+ -8192, 0, -13218, 14833, 0, 8836, 11095, 0,
+ 6218, 0, 0, 0, 8208, 0, -881, -14369,
+ 0, 0, -8192, 4163, 13218, 0, 0, 0,
+ 11095, 8836, -6218, -14833, 0, 0, 8176, -5566,
+ -11552, 5566, -9681, 11205, 8192, -11205, 0, -4920,
+ 15158, -9756, -3334, 9756, 0, -4920, 0, 0,
+ 8176, 0, 11552, -7871, 0, 0, 8192, -15846,
+ 9681, 0, 0, 0, 3334, -13797, 15158, -6958,
+ 0, 0, 8176, -7871, 11552, 0, 0, -15846,
+ 8192, 0, -9681, 6958, 0, -13797, 3334, 0,
+ -15158, 0, 0, 0, 8176, -5566, -11552, -5566,
+ 9681, 11205, 8192, 11205, 0, -4920, -15158, -9756,
+ -3334, -9756, 0, 4920, 0, 0, 8208, -10161,
+ 881, -10161, 13218, -2944, -8192, -2944, 0, -10488,
+ 6218, 6248, -11095, 6248, 0, 10488, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 32767, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 32767
+};
+
+const MappingMatrix mapping_matrix_foa_demixing = { 6, 6, 0 };
+const opus_int16 mapping_matrix_foa_demixing_data[36] = {
+ 16384, 16384, 16384, 16384, 0, 0, 0, 23170,
+ 0, -23170, 0, 0, -16384, 16384, -16384, 16384,
+ 0, 0, 23170, 0, -23170, 0, 0, 0,
+ 0, 0, 0, 0, 32767, 0, 0, 0,
+ 0, 0, 0, 32767
+};
+
+const MappingMatrix mapping_matrix_soa_demixing = { 11, 11, 3050 };
+const opus_int16 mapping_matrix_soa_demixing_data[121] = {
+ 2771, 2771, 2771, 2771, 2771, 2771, 2771, 2771,
+ 2771, 0, 0, 10033, 10033, -20066, 10033, 14189,
+ 14189, -28378, 10033, -20066, 0, 0, 3393, 3393,
+ 3393, -3393, 0, 0, 0, -3393, -3393, 0,
+ 0, -17378, 17378, 0, -17378, -24576, 24576, 0,
+ 17378, 0, 0, 0, -14189, 14189, 0, -14189,
+ -28378, 28378, 0, 14189, 0, 0, 0, 2399,
+ 2399, -4799, -2399, 0, 0, 0, -2399, 4799,
+ 0, 0, 1959, 1959, 1959, 1959, -3918, -3918,
+ -3918, 1959, 1959, 0, 0, -4156, 4156, 0,
+ 4156, 0, 0, 0, -4156, 0, 0, 0,
+ 8192, 8192, -16384, 8192, 16384, 16384, -32768, 8192,
+ -16384, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 8312, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 8312
+};
+
+const MappingMatrix mapping_matrix_toa_demixing = { 18, 18, 0 };
+const opus_int16 mapping_matrix_toa_demixing_data[324] = {
+ 8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
+ 8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
+ 0, 0, 0, -9779, 9779, 6263, 8857, 0,
+ 6263, 13829, 9779, -13829, 0, -6263, 0, -8857,
+ -6263, -9779, 0, 0, -3413, 3413, 3413, -11359,
+ 11359, 11359, -11359, -3413, 3413, -3413, -3413, -11359,
+ 11359, 11359, -11359, 3413, 0, 0, 13829, 9779,
+ -9779, 6263, 0, 8857, -6263, 0, 9779, 0,
+ -13829, 6263, -8857, 0, -6263, -9779, 0, 0,
+ 0, -15617, -15617, 6406, 0, 0, -6406, 0,
+ 15617, 0, 0, -6406, 0, 0, 6406, 15617,
+ 0, 0, 0, -5003, 5003, -10664, 15081, 0,
+ -10664, -7075, 5003, 7075, 0, 10664, 0, -15081,
+ 10664, -5003, 0, 0, -8176, -8176, -8176, 8208,
+ 8208, 8208, 8208, -8176, -8176, -8176, -8176, 8208,
+ 8208, 8208, 8208, -8176, 0, 0, -7075, 5003,
+ -5003, -10664, 0, 15081, 10664, 0, 5003, 0,
+ 7075, -10664, -15081, 0, 10664, -5003, 0, 0,
+ 15617, 0, 0, 0, -6406, 6406, 0, -15617,
+ 0, -15617, 15617, 0, 6406, -6406, 0, 0,
+ 0, 0, 0, -11393, 11393, 2993, -4233, 0,
+ 2993, -16112, 11393, 16112, 0, -2993, 0, 4233,
+ -2993, -11393, 0, 0, 0, -9974, -9974, -13617,
+ 0, 0, 13617, 0, 9974, 0, 0, 13617,
+ 0, 0, -13617, 9974, 0, 0, 0, 5579,
+ -5579, 10185, 14403, 0, 10185, -7890, -5579, 7890,
+ 0, -10185, 0, -14403, -10185, 5579, 0, 0,
+ 11826, -11826, -11826, -901, 901, 901, -901, 11826,
+ -11826, 11826, 11826, -901, 901, 901, -901, -11826,
+ 0, 0, -7890, -5579, 5579, 10185, 0, 14403,
+ -10185, 0, -5579, 0, 7890, 10185, -14403, 0,
+ -10185, 5579, 0, 0, -9974, 0, 0, 0,
+ -13617, 13617, 0, 9974, 0, 9974, -9974, 0,
+ 13617, -13617, 0, 0, 0, 0, 16112, -11393,
+ 11393, -2993, 0, 4233, 2993, 0, -11393, 0,
+ -16112, -2993, -4233, 0, 2993, 11393, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 32767, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 32767
+};
+
diff --git a/media/libopus/src/mapping_matrix.h b/media/libopus/src/mapping_matrix.h
new file mode 100644
index 0000000000..98bc82df3e
--- /dev/null
+++ b/media/libopus/src/mapping_matrix.h
@@ -0,0 +1,133 @@
+/* Copyright (c) 2017 Google Inc.
+ Written by Andrew Allen */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+ * @file mapping_matrix.h
+ * @brief Opus reference implementation mapping matrix API
+ */
+
+#ifndef MAPPING_MATRIX_H
+#define MAPPING_MATRIX_H
+
+#include "opus_types.h"
+#include "opus_projection.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct MappingMatrix
+{
+ int rows; /* number of channels outputted from matrix. */
+ int cols; /* number of channels inputted to matrix. */
+ int gain; /* in dB. S7.8-format. */
+ /* Matrix cell data goes here using col-wise ordering. */
+} MappingMatrix;
+
+opus_int32 mapping_matrix_get_size(int rows, int cols);
+
+opus_int16 *mapping_matrix_get_data(const MappingMatrix *matrix);
+
+void mapping_matrix_init(
+ MappingMatrix * const matrix,
+ int rows,
+ int cols,
+ int gain,
+ const opus_int16 *data,
+ opus_int32 data_size
+);
+
+#ifndef DISABLE_FLOAT_API
+void mapping_matrix_multiply_channel_in_float(
+ const MappingMatrix *matrix,
+ const float *input,
+ int input_rows,
+ opus_val16 *output,
+ int output_row,
+ int output_rows,
+ int frame_size
+);
+
+void mapping_matrix_multiply_channel_out_float(
+ const MappingMatrix *matrix,
+ const opus_val16 *input,
+ int input_row,
+ int input_rows,
+ float *output,
+ int output_rows,
+ int frame_size
+);
+#endif /* DISABLE_FLOAT_API */
+
+void mapping_matrix_multiply_channel_in_short(
+ const MappingMatrix *matrix,
+ const opus_int16 *input,
+ int input_rows,
+ opus_val16 *output,
+ int output_row,
+ int output_rows,
+ int frame_size
+);
+
+void mapping_matrix_multiply_channel_out_short(
+ const MappingMatrix *matrix,
+ const opus_val16 *input,
+ int input_row,
+ int input_rows,
+ opus_int16 *output,
+ int output_rows,
+ int frame_size
+);
+
+/* Pre-computed mixing and demixing matrices for 1st to 3rd-order ambisonics.
+ * foa: first-order ambisonics
+ * soa: second-order ambisonics
+ * toa: third-order ambisonics
+ */
+extern const MappingMatrix mapping_matrix_foa_mixing;
+extern const opus_int16 mapping_matrix_foa_mixing_data[36];
+
+extern const MappingMatrix mapping_matrix_soa_mixing;
+extern const opus_int16 mapping_matrix_soa_mixing_data[121];
+
+extern const MappingMatrix mapping_matrix_toa_mixing;
+extern const opus_int16 mapping_matrix_toa_mixing_data[324];
+
+extern const MappingMatrix mapping_matrix_foa_demixing;
+extern const opus_int16 mapping_matrix_foa_demixing_data[36];
+
+extern const MappingMatrix mapping_matrix_soa_demixing;
+extern const opus_int16 mapping_matrix_soa_demixing_data[121];
+
+extern const MappingMatrix mapping_matrix_toa_demixing;
+extern const opus_int16 mapping_matrix_toa_demixing_data[324];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MAPPING_MATRIX_H */
diff --git a/media/libopus/src/mlp.c b/media/libopus/src/mlp.c
new file mode 100644
index 0000000000..964c6a98f6
--- /dev/null
+++ b/media/libopus/src/mlp.c
@@ -0,0 +1,144 @@
+/* Copyright (c) 2008-2011 Octasic Inc.
+ 2012-2017 Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "opus_types.h"
+#include "opus_defines.h"
+#include "arch.h"
+#include "tansig_table.h"
+#include "mlp.h"
+
+static OPUS_INLINE float tansig_approx(float x)
+{
+ int i;
+ float y, dy;
+ float sign=1;
+ /* Tests are reversed to catch NaNs */
+ if (!(x<8))
+ return 1;
+ if (!(x>-8))
+ return -1;
+#ifndef FIXED_POINT
+ /* Another check in case of -ffast-math */
+ if (celt_isnan(x))
+ return 0;
+#endif
+ if (x<0)
+ {
+ x=-x;
+ sign=-1;
+ }
+ i = (int)floor(.5f+25*x);
+ x -= .04f*i;
+ y = tansig_table[i];
+ dy = 1-y*y;
+ y = y + x*dy*(1 - y*x);
+ return sign*y;
+}
+
+static OPUS_INLINE float sigmoid_approx(float x)
+{
+ return .5f + .5f*tansig_approx(.5f*x);
+}
+
+static void gemm_accum(float *out, const opus_int8 *weights, int rows, int cols, int col_stride, const float *x)
+{
+ int i, j;
+ for (i=0;i<rows;i++)
+ {
+ for (j=0;j<cols;j++)
+ out[i] += weights[j*col_stride + i]*x[j];
+ }
+}
+
+void compute_dense(const DenseLayer *layer, float *output, const float *input)
+{
+ int i;
+ int N, M;
+ int stride;
+ M = layer->nb_inputs;
+ N = layer->nb_neurons;
+ stride = N;
+ for (i=0;i<N;i++)
+ output[i] = layer->bias[i];
+ gemm_accum(output, layer->input_weights, N, M, stride, input);
+ for (i=0;i<N;i++)
+ output[i] *= WEIGHTS_SCALE;
+ if (layer->sigmoid) {
+ for (i=0;i<N;i++)
+ output[i] = sigmoid_approx(output[i]);
+ } else {
+ for (i=0;i<N;i++)
+ output[i] = tansig_approx(output[i]);
+ }
+}
+
+void compute_gru(const GRULayer *gru, float *state, const float *input)
+{
+ int i;
+ int N, M;
+ int stride;
+ float tmp[MAX_NEURONS];
+ float z[MAX_NEURONS];
+ float r[MAX_NEURONS];
+ float h[MAX_NEURONS];
+ M = gru->nb_inputs;
+ N = gru->nb_neurons;
+ stride = 3*N;
+ /* Compute update gate. */
+ for (i=0;i<N;i++)
+ z[i] = gru->bias[i];
+ gemm_accum(z, gru->input_weights, N, M, stride, input);
+ gemm_accum(z, gru->recurrent_weights, N, N, stride, state);
+ for (i=0;i<N;i++)
+ z[i] = sigmoid_approx(WEIGHTS_SCALE*z[i]);
+
+ /* Compute reset gate. */
+ for (i=0;i<N;i++)
+ r[i] = gru->bias[N + i];
+ gemm_accum(r, &gru->input_weights[N], N, M, stride, input);
+ gemm_accum(r, &gru->recurrent_weights[N], N, N, stride, state);
+ for (i=0;i<N;i++)
+ r[i] = sigmoid_approx(WEIGHTS_SCALE*r[i]);
+
+ /* Compute output. */
+ for (i=0;i<N;i++)
+ h[i] = gru->bias[2*N + i];
+ for (i=0;i<N;i++)
+ tmp[i] = state[i] * r[i];
+ gemm_accum(h, &gru->input_weights[2*N], N, M, stride, input);
+ gemm_accum(h, &gru->recurrent_weights[2*N], N, N, stride, tmp);
+ for (i=0;i<N;i++)
+ h[i] = z[i]*state[i] + (1-z[i])*tansig_approx(WEIGHTS_SCALE*h[i]);
+ for (i=0;i<N;i++)
+ state[i] = h[i];
+}
+
diff --git a/media/libopus/src/mlp.h b/media/libopus/src/mlp.h
new file mode 100644
index 0000000000..d7670550fd
--- /dev/null
+++ b/media/libopus/src/mlp.h
@@ -0,0 +1,60 @@
+/* Copyright (c) 2017 Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _MLP_H_
+#define _MLP_H_
+
+#include "opus_types.h"
+
+#define WEIGHTS_SCALE (1.f/128)
+
+#define MAX_NEURONS 32
+
+typedef struct {
+ const opus_int8 *bias;
+ const opus_int8 *input_weights;
+ int nb_inputs;
+ int nb_neurons;
+ int sigmoid;
+} DenseLayer;
+
+typedef struct {
+ const opus_int8 *bias;
+ const opus_int8 *input_weights;
+ const opus_int8 *recurrent_weights;
+ int nb_inputs;
+ int nb_neurons;
+} GRULayer;
+
+extern const DenseLayer layer0;
+extern const GRULayer layer1;
+extern const DenseLayer layer2;
+
+void compute_dense(const DenseLayer *layer, float *output, const float *input);
+
+void compute_gru(const GRULayer *gru, float *state, const float *input);
+
+#endif /* _MLP_H_ */
diff --git a/media/libopus/src/mlp_data.c b/media/libopus/src/mlp_data.c
new file mode 100644
index 0000000000..ae4178df76
--- /dev/null
+++ b/media/libopus/src/mlp_data.c
@@ -0,0 +1,672 @@
+/*This file is automatically generated from a Keras model*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "mlp.h"
+
+static const opus_int8 layer0_weights[800] = {
+ -30, -9, 2, -12, 5, -1, 8, 9,
+ 9, 8, -13, 18, -17, -34, -5, 17,
+ -11, 0, -4, 10, 2, 10, 15, -8,
+ 2, -1, 0, 5, 13, -3, -16, 1,
+ -5, 3, 7, -28, -13, 6, 36, -3,
+ 19, -60, -17, -28, 7, -11, -30, -7,
+ 2, -42, -21, -3, 6, -22, 33, -9,
+ 7, -30, 21, -14, 24, -11, -20, -18,
+ -5, -12, 12, -49, -50, -49, 16, 9,
+ -37, -1, 9, 34, -13, -31, -31, 12,
+ 16, 44, -42, 2, -9, 8, -18, -6,
+ 9, 36, 19, 11, 13, 12, -21, 3,
+ -28, -12, 3, 33, 25, -14, 11, 1,
+ -94, -39, 18, -12, -11, -15, -7, 49,
+ 52, 10, -43, 9, 57, 8, 21, -6,
+ 14, -15, 44, -8, 7, -30, -13, -2,
+ -9, 25, -2, -127, 18, -11, -52, 26,
+ -27, 27, 10, -10, 7, 43, 6, -24,
+ 41, 10, -18, -27, 10, 17, 9, 10,
+ -17, -10, 20, -6, 22, 55, 35, -80,
+ 36, 25, -24, -36, 15, 9, -19, 88,
+ 19, 64, -51, -35, 17, 0, -7, 41,
+ -16, 27, 4, 15, -1, 18, -16, 47,
+ -39, -54, -8, 13, -25, -20, 102, -18,
+ -5, 44, 11, -28, 71, 2, -51, -5,
+ 5, 2, -83, -9, -29, 8, 21, -53,
+ 58, -37, -7, 13, 38, 9, 34, -1,
+ -41, 21, 4, -24, -36, -33, -21, 32,
+ 75, -2, 1, -68, -1, 47, -29, 32,
+ 20, 12, -65, -87, 5, 16, -12, 24,
+ 40, 15, 7, 19, -26, -17, 17, 6,
+ -2, -37, -30, -9, 32, -127, -39, 0,
+ -31, -27, 4, -22, 23, -6, -77, 35,
+ -61, 32, -37, -24, 13, -11, -1, -40,
+ -3, 17, -7, 13, 11, 59, -19, 10,
+ 6, -18, 0, 13, 3, -6, -23, 19,
+ 11, -17, 13, -1, -80, 40, -53, 69,
+ -29, -54, 0, -4, 33, -25, -2, 38,
+ 35, 36, -15, 46, 2, -13, -16, -8,
+ -8, 12, -24, -9, -55, -5, -9, 32,
+ 11, 7, 12, -18, -10, -86, -38, 54,
+ 37, -25, 18, -43, 7, -27, -27, -54,
+ 13, 9, 22, 70, 6, 35, -7, 23,
+ -15, -44, -6, 7, -66, -85, 32, 40,
+ -19, -9, -7, 12, -15, 7, 2, 6,
+ -35, 11, 28, 0, 26, 14, 1, 1,
+ 4, 12, 18, 35, 22, -18, -3, 14,
+ -1, 7, 14, -8, -14, -3, 4, -3,
+ -19, -7, -1, -25, -27, 25, -26, -2,
+ 33, -22, -27, -25, 4, -9, 7, 21,
+ 26, -30, 10, -9, -20, 11, 27, 10,
+ 5, -18, 14, -4, 2, -17, -5, -7,
+ -9, -13, 15, 29, 1, -10, -16, -10,
+ 35, 36, -7, -22, -44, 17, 30, 22,
+ 21, -1, 22, -11, 32, -8, -7, 5,
+ -10, 5, 30, -20, 29, -20, -34, 12,
+ -4, -6, 6, -13, 10, -5, -68, -1,
+ 24, 9, 19, -24, -64, 31, 19, 27,
+ -26, 75, -45, 41, 39, -42, 8, 6,
+ 23, -30, 16, -25, 30, 34, 8, -38,
+ -3, 18, 16, -31, 22, -4, -9, 1,
+ 20, 9, 38, -32, 0, -45, 0, -6,
+ -13, 11, -25, -32, -22, 31, -24, -11,
+ -11, -4, -4, 20, -34, 22, 20, 9,
+ -25, 27, -5, 28, -29, 29, 6, 21,
+ -6, -18, 54, 4, -46, 23, 21, -14,
+ -31, 36, -41, -24, 4, 22, 10, 11,
+ 7, 36, -32, -13, -52, -17, 24, 28,
+ -37, -36, -1, 24, 9, -38, 35, 48,
+ 18, 2, -1, 45, 10, 39, 24, -38,
+ 13, 8, -16, 8, 25, 11, 7, -29,
+ -11, 7, 20, -30, -38, -45, 14, -18,
+ -28, -9, 65, 61, 22, -53, -38, -16,
+ 36, 46, 20, -39, 32, -61, -6, -6,
+ -36, -33, -18, -28, 56, 101, 45, 11,
+ -28, -23, -29, -61, 20, -47, 2, 48,
+ 27, -17, 1, 40, 1, 3, -51, 15,
+ 35, 28, 22, 35, 53, -61, -29, 12,
+ -6, -21, 10, 3, -20, 2, -25, 1,
+ -6, 31, 11, -3, 1, -10, -52, 6,
+ 126, -105, 122, 127, -128, 127, 127, -128,
+ 127, 108, 12, 127, 48, -128, -36, -128,
+ 127, 127, -128, -128, 127, 89, -128, 127,
+ -128, -128, -128, 127, 127, -128, -128, -93,
+ -82, 20, 125, 65, -82, 127, 38, -74,
+ 81, 88, -88, 79, 51, -47, -111, -26,
+ 14, 83, -88, -112, 24, 35, -101, 98,
+ -99, -48, -45, 46, 83, -60, -79, 45,
+ -20, -41, 9, 4, 52, 54, 93, -10,
+ 4, 13, 3, 123, 6, 94, -111, -69,
+ -14, -31, 10, 12, 53, -79, -11, -21,
+ -2, -44, -72, 92, 65, -57, 56, -38,
+ 127, -56, -128, 127, 127, -128, 86, 117,
+ -75, -128, 127, -19, -99, -112, 127, -128,
+ 127, -48, 114, 118, -128, -128, 117, -17,
+ -6, 121, -128, 127, -128, 82, 54, -106,
+ 127, 127, -33, 100, -39, -23, 18, -78,
+ -34, -29, -1, -30, 127, -26, 127, -128,
+ 126, -128, 27, -23, -79, -120, -127, 127,
+ 72, 66, 29, 7, -66, -56, -117, -128
+};
+
+static const opus_int8 layer0_bias[32] = {
+ 51, -16, 1, 13, -5, -6, -16, -7,
+ 11, -6, 106, 26, 28, -14, 21, -29,
+ 7, 18, -18, -17, 21, -17, -9, 20,
+ -25, -3, -34, 48, 11, -13, -31, -20
+};
+
+static const opus_int8 layer1_weights[2304] = {
+ 22, -1, -7, 7, 29, -27, -31, -17,
+ -13, 33, 44, -8, 11, 33, 24, 78,
+ 15, 19, 30, -2, -24, 5, 49, 5,
+ 36, 29, -14, -11, -48, -33, 21, -42,
+ -38, -12, 55, -37, 54, -8, 1, 36,
+ 17, 0, 51, 31, 59, 7, -12, 53,
+ 4, 32, -14, 48, 5, -10, -16, -8,
+ 1, -16, -56, -24, -6, 18, -2, 23,
+ 6, 46, -6, -10, 20, 35, -44, -15,
+ -49, 36, 16, 5, -7, -79, -67, 12,
+ 70, -3, -79, -54, -85, -24, 47, -22,
+ 33, 21, 69, -1, 11, 22, 14, -16,
+ -16, -22, -28, -11, 11, -41, 31, -26,
+ -33, -19, -4, 27, 32, -50, 5, -10,
+ -38, -22, -8, 35, -31, 1, -41, -15,
+ -11, 44, 28, -17, -41, -23, 17, 2,
+ -23, -26, -13, -13, -17, 6, 14, -31,
+ -25, 9, -19, 39, -8, 4, 31, -1,
+ -45, -11, -28, -92, -46, -15, 21, 118,
+ -22, 45, -51, 11, -20, -20, -15, 13,
+ -21, -97, -29, -32, -23, -42, 94, 1,
+ 23, -8, 63, -3, -46, 19, -26, 32,
+ -40, -74, -26, 26, -4, -13, 30, -20,
+ -30, -25, -14, -31, -45, -43, 4, -60,
+ -48, -12, -34, 2, 2, 3, 13, 15,
+ 11, 16, 5, 46, -9, -55, -16, -57,
+ 29, 14, 38, -50, -2, -44, -11, -8,
+ 52, -27, -38, -7, 20, 47, 17, -59,
+ 0, 47, 46, -63, 35, -17, 19, 33,
+ 68, -19, 2, 15, -16, 28, -16, -103,
+ 26, -35, 47, -39, -60, 30, 31, -23,
+ -52, -13, 116, 47, -25, 30, 40, 30,
+ -22, 2, 12, -27, -18, 31, -10, 27,
+ -8, -66, 12, 14, 4, -26, -28, -13,
+ 3, 13, -26, -51, 37, 5, 2, -21,
+ 47, 3, 13, 25, -41, -27, -8, -4,
+ 5, -76, -33, 28, 10, 9, -46, -74,
+ 19, 28, 25, 31, 54, -55, 68, 38,
+ -24, -32, 2, 4, 68, 11, -1, 99,
+ 5, 16, -2, -74, 40, 26, -26, 33,
+ 31, -1, -68, 14, -6, 25, 9, 29,
+ 60, 61, 7, -7, 0, -24, 7, 77,
+ 4, -1, 16, -7, 13, -15, -19, 28,
+ -31, -24, -16, 37, 24, 13, 30, 10,
+ -30, 11, 11, -10, 22, 60, 28, 45,
+ -3, -40, -62, -5, -102, 9, -32, -27,
+ -54, 21, 15, -5, 37, -43, -11, 37,
+ -19, 47, -64, -128, -27, -114, 21, -66,
+ 59, 46, -3, -12, -87, -9, 4, 19,
+ -113, -36, 78, 57, -26, -38, -77, -10,
+ 6, 6, -75, 25, -97, -11, 33, -46,
+ 1, 13, -21, -33, -20, 16, -6, -3,
+ -11, -4, -27, 38, 8, -41, -2, -33,
+ 18, 19, -26, 1, -29, -22, -4, -14,
+ -55, -11, -80, -3, 11, 34, 90, 51,
+ 11, 17, 43, 36, 127, -32, 29, 103,
+ 9, 27, 13, 64, 56, 70, -14, 3,
+ -12, 10, 37, 3, 12, -22, -10, 46,
+ 28, 10, 20, 26, -24, 18, 9, 7,
+ 14, 34, -5, -7, 31, -14, -56, 11,
+ -18, -8, -17, -7, -10, -40, 10, -33,
+ -32, -43, 5, 9, 11, -4, 10, 50,
+ -12, -5, 46, 9, 7, 1, 11, 15,
+ 91, -17, 7, -50, 23, 6, -30, -99,
+ 0, -17, 14, 8, -10, -25, -30, -69,
+ -62, 31, 127, 114, -23, 101, -5, -54,
+ -6, -22, 7, -56, 39, 18, -29, 0,
+ 46, 8, -79, 4, -21, 18, -32, 62,
+ -12, -8, -12, -58, 31, -32, 17, 6,
+ -24, 25, 24, 9, -4, -19, 45, 6,
+ 17, -14, 5, -27, 16, -4, -41, 25,
+ -36, 5, 15, 12, 50, 27, 25, 23,
+ -44, -69, -9, -19, -48, -8, 4, 12,
+ -6, 13, -19, -30, -36, 26, 37, -1,
+ -3, -30, -42, -14, -10, -20, 26, -54,
+ -27, -44, 4, 73, -26, 90, 32, -69,
+ -29, -16, 3, 103, 15, -17, 37, 24,
+ -23, -31, 33, -37, -64, 25, 13, -81,
+ -28, -32, 27, 5, -35, -23, 15, -22,
+ 19, -7, 9, 30, 19, -23, 27, -13,
+ 43, 29, -29, -6, 9, -40, -33, -33,
+ -32, 9, 11, -48, -8, -23, -52, 46,
+ 17, -22, -42, 35, -15, -41, 16, 34,
+ 31, -42, -19, -11, 55, 7, -39, 89,
+ -11, -33, 20, -14, 22, 32, 3, -17,
+ -6, 14, 34, 1, 55, -21, -90, -8,
+ 18, 27, 13, -29, 21, 15, -33, -51,
+ -9, -11, 4, -16, -18, 23, -4, -4,
+ 48, 1, 7, 29, -14, -12, -16, 17,
+ 35, 8, 0, -7, -2, 9, 8, 17,
+ -6, 53, -32, -21, -50, 5, 99, -60,
+ -5, -53, 10, -31, 12, -5, 7, 80,
+ 36, 18, -31, 9, 98, 36, -63, -35,
+ 4, -13, -28, -24, 28, -13, 18, 16,
+ -1, -18, -34, 10, 20, 7, 4, 29,
+ 11, 25, -7, 36, 14, 45, 24, 1,
+ -16, 30, 6, 35, -6, -11, -24, 13,
+ -1, 27, 39, 20, 48, -11, -4, -13,
+ 28, 11, -31, -18, 31, -29, 22, -2,
+ -20, -16, 5, 30, -12, -28, -3, 93,
+ -16, 23, 18, -29, 6, -54, -37, 28,
+ -3, -3, -47, -3, -36, -55, -3, 41,
+ -10, 47, -2, 23, 42, -7, -71, -27,
+ 83, -64, 7, -24, 8, 26, -17, 15,
+ 12, 31, -30, -38, -13, -33, -56, 4,
+ -17, 20, 18, 1, -30, -5, -6, -31,
+ -14, -37, 0, 22, 10, -30, 37, -17,
+ 18, 6, 5, 23, -36, -32, 14, 18,
+ -13, -61, -52, -69, 44, -30, 16, 18,
+ -4, -25, 14, 81, 26, -8, -23, -59,
+ 52, -104, 17, 119, -32, 26, 17, 1,
+ 23, 45, 29, -64, -57, -14, 73, 21,
+ -13, -13, 9, -68, -7, -52, 3, 24,
+ -39, 44, -15, 27, 14, 19, -9, -28,
+ -11, 5, 3, -34, -2, 2, 22, -6,
+ -23, 4, 3, 13, -22, -13, -10, -18,
+ 29, 6, 44, -13, -24, -8, 2, 30,
+ 14, 43, 6, 17, -73, -6, -7, 20,
+ -80, -7, -7, -28, 15, -69, -38, -5,
+ -100, -35, 15, -79, 23, 29, -18, -27,
+ 21, -66, -37, 8, -22, -39, 48, 4,
+ -13, 1, -9, 11, -29, 22, 6, -49,
+ 32, -14, 47, -18, -4, 44, -52, -74,
+ 43, 30, 23, -14, 5, 0, -27, 4,
+ -7, 10, -4, 10, 1, -16, 11, -18,
+ -2, -5, 2, -11, 0, -20, -4, 38,
+ 74, 59, 39, 64, -10, 26, -3, -40,
+ -68, 3, -30, -51, 8, -19, -27, -46,
+ 51, 52, 54, 36, 90, 92, 14, 13,
+ -5, 0, 16, -62, 16, 11, -47, -37,
+ -6, -5, 21, 54, -57, 32, 42, -6,
+ 62, -9, 16, 21, 24, 9, -10, -4,
+ 33, 50, 13, -15, 1, -35, -48, 18,
+ -11, -17, -67, -13, 21, 38, -44, 36,
+ -16, 29, 17, 5, -10, 18, 17, -32,
+ 2, 8, 22, -56, -15, -32, 40, 43,
+ 19, 46, -7, -100, -96, 19, 53, 24,
+ 21, -26, -48, -101, -82, 61, 38, -85,
+ -28, -34, -1, 63, -5, -5, 39, 39,
+ -38, 32, -12, -28, 20, 40, -8, 2,
+ 31, 12, -35, -13, 20, -25, 30, 8,
+ 3, -13, -9, -20, 2, -13, 24, 37,
+ -10, 33, 6, 20, -16, -24, -6, -6,
+ -19, -5, 22, 21, 10, 11, -4, -39,
+ -1, 6, 49, 41, -15, -57, 21, -62,
+ 77, -69, -13, 0, -74, 1, -7, -38,
+ -8, 6, 63, 28, 4, 26, -52, 82,
+ 63, 13, 45, -33, 44, -52, -65, -21,
+ -46, -49, 64, -17, 32, 24, 68, -39,
+ -16, -5, -26, 28, 5, -61, -28, 2,
+ 24, 11, -12, -33, 9, -37, -3, -28,
+ 22, -37, -12, 19, 0, -18, -2, 14,
+ 1, 4, 8, -9, -2, 43, -17, -2,
+ -66, -31, 56, -40, -87, -36, -2, -4,
+ -42, -45, -1, 31, -43, -15, 27, 63,
+ -11, 32, -10, -33, 27, -19, 4, 15,
+ -26, -34, 29, -4, -39, -65, 14, -20,
+ -21, -17, -36, 13, 59, 47, -38, -33,
+ 13, -37, -8, -37, -7, -6, -76, -31,
+ -12, -46, 7, 24, -21, -30, -14, 9,
+ 15, -12, -13, 47, -27, -25, -1, -39,
+ 0, 20, -9, 6, 7, 4, 3, 7,
+ 39, 50, 22, -7, 14, -20, 1, 70,
+ -28, 29, -41, 10, -16, -5, -28, -2,
+ -37, 32, -18, 17, 62, -11, -20, -50,
+ 36, 21, -62, -12, -56, 52, 50, 17,
+ 3, 48, 44, -41, -25, 3, 16, -3,
+ 0, 33, -6, 15, 27, 34, -25, 22,
+ 9, 17, -11, 36, 16, -2, 12, 21,
+ -52, 45, -2, -10, 46, 21, -18, 67,
+ -28, -13, 30, 37, 42, 16, -9, 11,
+ 75, 7, -64, -40, -10, 29, 57, -23,
+ 5, 53, -77, 3, -17, -5, 47, -55,
+ -35, -36, -13, 52, -53, -71, 52, -111,
+ -23, -26, -28, 29, -43, 55, -19, 43,
+ -19, 54, -12, -33, -44, -39, -19, -10,
+ -31, -10, 21, 38, -57, -20, 2, -25,
+ 8, -6, 50, 12, 15, 25, -25, 15,
+ -30, -6, 9, 25, 37, 19, -4, 31,
+ -22, 2, 4, 2, 36, 7, 3, -34,
+ -80, 36, -10, -2, -5, 31, -36, 49,
+ -70, 20, -36, 21, 24, 25, -46, -51,
+ 36, -58, -48, -40, -10, 55, 71, 47,
+ 10, -1, 1, 2, -46, -68, 16, 13,
+ 0, -74, -29, 73, -52, -18, -11, 7,
+ -44, -82, -32, -70, -28, -1, -39, -68,
+ -6, -41, 12, -22, -16, 40, -11, -25,
+ 51, -9, 21, 4, 4, -34, 7, -78,
+ 16, 6, -38, -30, -2, -44, 32, 0,
+ 22, 64, 5, -72, -2, -14, -10, -16,
+ -8, -25, 12, 102, -58, 37, -10, -23,
+ 15, 49, 7, -7, 2, -20, -32, 45,
+ -6, 48, 28, 30, 33, -1, 22, -6,
+ 30, 65, -17, 29, 74, 37, -26, -10,
+ 15, -24, 19, -66, 22, -10, -31, -1,
+ -18, -9, 11, 37, -4, 45, 5, 41,
+ 17, 1, 1, 24, -58, 41, 5, -51,
+ 14, 8, 43, 16, -10, -1, 45, 32,
+ -64, 3, -33, -25, -3, -27, -68, 12,
+ 23, -11, -13, -37, -40, 4, -21, -12,
+ 32, -23, -19, 76, 41, -23, -24, -44,
+ -65, -1, -15, 1, 71, 63, 5, 20,
+ -3, 21, -23, 31, -32, 18, -2, 27,
+ 31, 46, -5, -39, -5, -35, 18, -18,
+ -40, -10, 3, 12, 2, -2, -22, 40,
+ 5, -6, 60, 36, 3, 29, -27, 10,
+ 25, -54, 5, 26, 39, 35, -24, -37,
+ 30, -91, 28, -4, -21, -27, -39, -6,
+ 5, 12, -128, 38, -16, 29, -95, -29,
+ 82, -2, 35, 2, 12, 8, -22, 10,
+ 80, -47, 2, -25, -73, -79, 16, -30,
+ -32, -66, 48, 21, -45, -11, -47, 14,
+ -27, -17, -7, 15, -44, -14, -44, -26,
+ -32, 26, -23, 17, -7, -28, 26, -6,
+ 28, 6, -26, 2, 13, -14, -23, -14,
+ 19, 46, 16, 2, -33, -21, 28, -17,
+ -42, 44, -37, 1, -39, 28, 84, -46,
+ 15, 10, 13, -44, 72, -26, 26, 32,
+ -28, -12, -83, 2, 10, -30, -44, -10,
+ -28, 53, 45, 65, 0, -25, 57, 36,
+ -33, 6, 29, 44, -53, 11, 19, -2,
+ -27, 35, 32, 49, 4, 23, 38, 36,
+ 24, 10, 51, -39, 4, -7, 26, 37,
+ -35, 11, -47, -18, 28, 16, -35, 42,
+ 17, -21, -41, 28, 14, -12, 11, -45,
+ 7, -43, -15, 18, -5, 38, -40, -50,
+ -30, -21, 9, -98, 13, 12, 23, 75,
+ -56, -7, -3, -4, -1, -34, 12, -49,
+ 11, 26, -18, -28, -17, 33, 13, -14,
+ 40, 24, -72, -37, 10, 17, -6, 22,
+ 16, 16, -6, -12, -30, -14, 10, 40,
+ -23, 12, 15, -3, -15, 13, -56, -4,
+ -30, 1, -3, -17, 27, 50, -5, 64,
+ -36, -19, 7, 29, 22, 25, 9, -16,
+ -58, -69, -40, -61, -71, -14, 42, 93,
+ 26, 11, -6, -58, -11, 70, -52, 19,
+ 9, -30, -33, 11, -37, -47, -21, -22,
+ -40, 10, 47, 4, -23, 17, 48, 41,
+ -48, 14, 10, 15, 34, -23, -2, -47,
+ 23, -32, -13, -10, -26, -26, -4, 16,
+ 38, -14, 0, -12, -7, -7, 20, 44,
+ -1, -32, -27, -16, 4, -6, -18, 14,
+ 5, 4, -29, 28, 7, -7, 15, -11,
+ -20, -45, -36, 16, 84, 34, -59, -30,
+ 22, 126, 8, 68, 79, -17, 21, -68,
+ 37, 5, 15, 63, 49, 127, -90, 85,
+ 43, 7, 16, 9, 6, -45, -57, -43,
+ 57, 11, -23, -11, -29, 60, -26, 0,
+ 7, 42, -24, 10, 23, -25, 8, -7,
+ -40, 19, -17, 35, 4, 27, -39, -91,
+ 27, -36, 34, 2, 16, -24, 25, 7,
+ -21, 5, 17, 10, -22, -30, 9, -17,
+ -61, -26, 33, 21, 58, -51, -14, 69,
+ -38, 20, 7, 80, -4, -65, -6, -27,
+ 53, -12, 47, -1, -15, 1, 60, 102,
+ -79, -4, 12, 9, 22, 37, -8, -4,
+ 37, 2, -3, -15, -16, -11, -5, 19,
+ -6, -43, 20, -25, -18, 10, -27, 0,
+ -28, -27, -11, 10, -18, -2, -4, -16,
+ 26, 14, -6, 7, -6, 1, 53, -2,
+ -29, 23, 9, -30, -6, -4, -6, 56,
+ 70, 0, -33, -20, -17, -9, -24, 46,
+ -5, -105, 47, -46, -51, 20, 20, -53,
+ -81, -1, -7, 75, -5, -21, -65, 12,
+ -52, 22, -50, -12, 49, 54, 76, -81,
+ 10, 45, -41, -59, 18, -19, 25, 14,
+ -31, -53, -5, 12, 31, 84, -23, 2,
+ 7, 2, 10, -32, 39, -2, -12, 1,
+ -9, 0, -10, -11, 9, 15, -8, -2,
+ 2, -1, 10, 14, -5, -40, 19, -7,
+ -7, 26, -4, 2, 1, -27, 35, 32,
+ 21, -31, 26, 43, -9, 4, -32, 40,
+ -62, -52, 36, 22, 38, 22, 36, -96,
+ 6, -10, -23, -49, 15, -33, -18, -3,
+ 0, 41, 21, -19, 21, 23, -39, -23,
+ -6, 6, 47, 56, 4, 74, 0, -98,
+ 29, -47, -14, -36, 21, -22, 22, 16,
+ 13, 12, 16, -5, 13, 17, -13, -15,
+ 1, -34, -26, 26, 12, 32, 27, 13,
+ -67, 27, 2, 8, 10, 18, 16, 20,
+ -17, -17, 57, -64, 5, 14, 19, 31,
+ -18, -44, -46, -16, 4, -25, 17, -126,
+ -24, 39, 4, 8, 55, -25, -34, 39,
+ -16, 3, 9, 71, 72, -31, -55, 6,
+ 10, -25, 32, -85, -21, 18, -8, 15,
+ 12, -27, -7, 1, -21, -2, -5, 48,
+ -16, 18, 1, -22, -26, 16, 14, -31,
+ 27, -6, -15, -21, 4, -14, 18, -36
+};
+
+static const opus_int8 layer1_recur_weights[1728] = {
+ 20, 67, -99, 12, 41, -25, 49, -44,
+ 35, 81, 110, 47, 34, -66, -14, 14,
+ -60, 34, 29, -73, 10, 41, 35, 89,
+ 7, -35, 22, 7, 27, -20, -6, 56,
+ 26, 66, 6, 33, -55, 53, 1, -21,
+ 14, 17, 68, 55, 59, 0, 18, -9,
+ 5, -41, 6, -5, -114, -12, 29, 42,
+ -23, 10, 81, -27, 20, -53, -30, -62,
+ 40, 95, 25, -4, 3, 18, -8, -15,
+ -29, -82, 2, -57, -3, -61, -29, -29,
+ 49, 2, -55, 5, -69, -99, -49, -51,
+ 6, -25, 12, 89, 44, -33, 5, 41,
+ 1, 23, -37, -37, -28, -48, 3, 4,
+ -41, -30, -57, -35, -39, -1, -13, -56,
+ -5, 50, 49, 41, -4, -4, 33, -22,
+ -1, 33, 34, 18, 40, -42, 12, 1,
+ -6, -2, 18, 17, 39, 44, 11, 65,
+ -60, -45, 10, 91, 21, 9, -62, -11,
+ 8, 69, 37, 24, -30, 21, 26, -27,
+ 1, -28, 24, 66, -8, 6, -71, 34,
+ 24, 44, 58, -78, -19, 57, 17, -60,
+ 1, 12, -3, -1, -40, 22, 11, -5,
+ 25, 12, 1, 72, 79, 7, -50, 23,
+ 18, 13, 21, -11, -20, 5, 77, -94,
+ 24, 15, 57, -51, 3, 36, 53, -1,
+ 4, 14, 30, -31, 22, 40, 32, -11,
+ -34, -36, -59, 58, 25, 21, -54, -23,
+ 40, 46, 18, 0, 12, 54, -96, -99,
+ -59, 5, 119, -38, 50, 55, 12, -16,
+ 67, 0, 34, 35, 39, 35, -1, 69,
+ 24, 27, -30, -35, -4, -70, 2, -44,
+ -7, -6, 19, -9, 60, 44, -21, -10,
+ 37, 43, -16, -3, 30, -15, -65, 31,
+ -55, 18, -98, 76, 64, 25, 24, -18,
+ -7, -68, -10, 38, 27, -60, 36, 33,
+ 16, 30, 34, -39, -37, 31, 12, 53,
+ -54, 14, -26, -49, -128, -13, -5, -22,
+ -11, -85, 55, -8, -51, -11, -33, -10,
+ -31, -76, -41, 23, 44, -40, -54, -127,
+ -101, 19, -23, -15, 15, 27, 58, -60,
+ 8, 14, -33, 1, 48, -9, -11, -123,
+ 3, 53, 23, 4, -28, 22, 2, -29,
+ -67, 36, 12, 7, 55, -21, 88, 20,
+ -1, -21, -17, 3, 41, 32, -10, -14,
+ -5, -57, 67, 57, 21, 23, -2, -27,
+ -73, -24, 120, 21, 18, -35, 42, -7,
+ 3, -45, -25, 76, -34, 50, 11, -54,
+ -91, 3, -113, -20, -5, 47, 15, -47,
+ 17, 27, -3, -26, -7, 10, 7, 74,
+ -40, 64, -7, -5, -24, -49, -24, -3,
+ -10, 27, -17, -8, -3, 14, -27, 33,
+ 13, 39, 28, -7, -38, 29, 16, 44,
+ 19, 55, -3, 9, -13, -57, 43, 43,
+ 31, 0, -93, -17, 19, -56, 4, -12,
+ -25, 37, -85, -13, -118, 33, -17, 56,
+ 71, -80, -4, 6, -11, -18, 47, -52,
+ 25, 9, 48, -107, 1, 21, 20, -3,
+ 10, -16, -4, 24, 17, 31, -61, -18,
+ -50, 24, -10, 12, 71, 26, 11, -3,
+ 4, 1, 0, -7, -40, 18, 38, -34,
+ 38, 17, 8, -34, 2, 21, 123, -32,
+ -26, 43, 14, -34, -1, -9, 37, -16,
+ 6, -17, -62, 68, 22, 17, 11, -75,
+ 33, -80, 62, -9, -75, 76, 36, -41,
+ -8, -40, -11, -71, 40, -39, 62, -49,
+ -81, 16, -9, -52, 52, 61, 17, -103,
+ -27, -10, -8, -54, -57, 21, 23, -16,
+ -52, 36, 18, 10, -5, 8, 15, -29,
+ 5, -19, -37, 8, -53, 6, 19, -37,
+ 38, -17, 48, 10, 0, 81, 46, 70,
+ -29, 101, 11, 44, -44, -3, 24, 11,
+ 3, 14, -9, 11, 14, -45, 13, 46,
+ -3, -57, 68, 44, 63, 98, 25, -28,
+ -23, 15, 32, -10, 53, -6, -2, -9,
+ -6, 16, -107, -11, -11, -28, 59, 57,
+ -22, 38, 42, 83, 27, 5, 29, -30,
+ 12, -21, -13, 31, 38, -21, 58, -10,
+ -10, -15, -2, -5, 11, 12, -73, -28,
+ -38, 22, 2, -25, 73, -52, -12, -55,
+ 32, -63, 21, 51, 33, 52, -26, 55,
+ -26, -26, 57, -32, -4, -52, -61, 21,
+ -33, -91, -51, 69, -90, -53, -38, -44,
+ 12, -76, -20, 77, -45, -7, 86, 43,
+ -109, -33, -105, -40, -121, -10, 0, -72,
+ 45, -51, -75, -49, -38, -1, -62, 18,
+ -1, 30, -44, -14, -10, -67, 40, -10,
+ -34, 46, -64, -32, 29, -13, 33, 3,
+ -32, -5, 28, -27, -25, 93, 24, 68,
+ -40, 57, 23, -3, -21, -58, 17, -39,
+ -17, -22, -89, 11, 18, -46, 27, 24,
+ 46, 127, 61, 87, 31, 127, -36, 47,
+ -23, 47, 127, -24, 110, 122, 30, 100,
+ 0, 96, -12, 6, 50, 44, -13, 73,
+ 4, 55, -11, -15, 49, 42, -6, 20,
+ -35, 58, 18, 38, 42, 72, 19, -21,
+ 11, 9, -37, 7, 29, 31, 16, -17,
+ 13, -50, 19, 5, -23, 51, -16, -5,
+ 4, -24, 76, 10, -53, -28, -7, -65,
+ 74, 40, -16, -29, 32, -16, -49, -35,
+ -3, 59, -96, -50, -43, -43, -61, -15,
+ -8, -36, -34, -33, -14, 11, -3, -39,
+ 4, -114, -123, -11, -49, -21, 14, -56,
+ 1, 43, -63, 26, 40, 18, -10, -26,
+ -14, -15, -35, -35, -11, 32, -44, -67,
+ 2, 22, 7, 3, -9, -30, -51, -28,
+ 28, 6, -22, 16, 34, -25, -52, -54,
+ -8, -6, 5, 8, 20, -16, -17, -44,
+ 27, 3, 31, -5, -48, -1, -3, 116,
+ 11, 71, -31, -47, 109, 50, -22, -12,
+ -57, 32, 66, 8, -25, -93, -54, -10,
+ 19, -76, -34, 97, 48, -36, -18, -30,
+ -39, -26, -12, 28, 14, 12, -12, -31,
+ 38, 2, 10, 4, -40, 20, 16, -61,
+ 2, 64, 39, 5, 15, 33, 40, -61,
+ -49, 93, -10, 33, 28, -11, -27, -18,
+ 39, -62, -6, -6, 62, 11, -8, 38,
+ -67, 12, 27, 39, -27, 123, -18, -6,
+ -65, 83, -64, 20, 19, -11, 33, 24,
+ 17, 56, 78, 7, -15, 54, -101, -9,
+ 115, -96, 50, 51, 35, 34, 27, 37,
+ -40, -11, 8, -36, 42, -45, 2, -23,
+ 0, 67, -8, -9, -13, 50, -14, -27,
+ 4, 0, -8, -14, 30, -9, 29, 15,
+ 9, -38, 37, -8, 50, -46, 54, 41,
+ -11, -8, -11, -26, 39, 45, 14, -26,
+ -17, -27, 69, 38, 39, 98, 66, 0,
+ 42, 123, -101, -19, -83, 117, -32, 56,
+ 10, 12, -88, 79, -53, 56, 63, 95,
+ -62, 9, 36, -13, -79, -16, 37, -46,
+ 35, -34, 14, 17, -54, 5, 21, -7,
+ 7, 63, 56, 15, 27, -76, -25, 4,
+ -26, -63, 28, -67, -52, 43, -47, -70,
+ 40, -12, 40, -66, -37, 0, 35, 37,
+ -53, 4, -17, -51, 11, 21, 14, -34,
+ -4, 24, -42, 29, 22, 7, 28, 12,
+ 37, 39, -39, -19, 65, -60, -50, -2,
+ 1, 82, 39, 19, -23, -43, -22, -67,
+ -35, -34, 32, 102, 81, 127, 36, 67,
+ -45, 1, -67, -52, -4, 35, 20, 28,
+ 71, 86, -35, -9, -83, -34, 12, 9,
+ -23, 2, 14, 28, -23, 7, -25, 45,
+ 7, 17, -37, 0, -19, 31, 26, 40,
+ -27, -16, 17, 5, -21, 23, 24, 96,
+ -55, 52, -19, -14, -6, 1, 50, -34,
+ 86, -53, 38, 2, -52, -36, -13, 60,
+ -85, -120, 32, 7, -12, 22, 70, -7,
+ -94, 38, -76, -31, -20, 15, -28, 7,
+ 6, 40, 53, 88, 3, 38, 18, -8,
+ -22, -23, 51, 37, -9, 13, -32, 25,
+ -21, 27, 31, 20, 18, -9, -13, 1,
+ 21, -24, -13, 39, 15, -11, -29, -36,
+ 18, 15, 8, 27, 21, -94, -1, -22,
+ 49, 66, -1, 6, -3, -40, -18, 6,
+ 28, 12, 33, -59, 62, 60, -48, 90,
+ -1, 108, 9, 18, -2, 27, 77, -65,
+ 82, -48, -38, -19, -11, 127, 50, 66,
+ 18, -13, -22, 60, -38, 40, -14, -26,
+ -13, 38, 67, 57, 30, 33, 26, 36,
+ 38, -17, 27, -28, 20, 12, -64, 18,
+ 5, -33, -27, 13, -26, 32, 35, -5,
+ -48, -14, 92, 43, -47, -14, 40, 11,
+ 51, 66, 22, -63, -16, -61, 4, -28,
+ 27, 20, -33, -30, -21, -29, -53, 31,
+ -40, 24, 43, -4, -19, 21, 67, 20,
+ 100, -16, -93, 78, -6, -18, -52, -37,
+ -9, 66, -31, -8, 26, 18, 4, 24,
+ -22, 17, -2, -13, 27, 0, 8, -18,
+ -25, 5, -21, -24, -7, 18, -93, 21,
+ 7, 2, -75, 69, 50, -5, -15, -17,
+ 60, -42, 55, 1, -4, 3, 10, 46,
+ 16, -13, 45, -7, -10, -44, -108, 49,
+ 2, -15, -64, -12, -72, 32, -38, -45,
+ 10, -54, 13, -13, -27, -36, -64, 58,
+ -62, -101, 88, -86, -71, -39, -9, -128,
+ 32, 15, -4, 54, -16, -39, -26, -36,
+ 46, 48, -64, -10, 19, 30, -13, 34,
+ -8, 50, 60, -22, -6, -11, -30, 5,
+ 50, 32, 56, 0, 25, 6, 68, 11,
+ -29, 45, -9, -12, 4, 1, 18, -49,
+ 0, -38, -19, 90, 29, 35, 51, 8,
+ -48, 96, -1, -12, -9, -32, -63, -65,
+ -7, 38, 89, 28, -85, -28, -23, -25,
+ -128, 56, 79, -36, 99, -6, -37, 7,
+ -13, -69, -46, -29, 25, 64, -21, 17,
+ 1, 42, -66, 1, 80, 26, -32, 21,
+ 15, 15, 6, 6, -10, 15, 127, 5,
+ 38, 27, 87, -57, -25, 11, 72, -21,
+ -5, 11, -13, -66, 78, 36, -3, 41,
+ -21, 8, -33, 23, 73, 28, 57, -25,
+ -5, 4, -22, -47, 15, 4, -57, -72,
+ 33, 1, 18, 2, 53, -71, -99, -21,
+ -3, -111, 108, 71, -14, 82, 25, 61,
+ -48, 5, 9, -51, -20, -25, -3, 14,
+ -33, 14, -3, -34, 22, 12, -19, -38,
+ -16, 2, 21, 16, 26, -31, 75, 44,
+ -31, 16, 26, 66, 17, -9, -22, -22,
+ 22, -44, 22, 27, 2, 58, -14, 10,
+ -73, -42, 55, -25, -61, 72, -1, 30,
+ -58, -25, 63, 26, -48, -40, 26, -30,
+ 60, 8, -17, -1, -18, -20, 43, -20,
+ -4, -28, 127, -106, 29, 70, 64, -27,
+ 39, -33, -5, -88, -40, -52, 26, 44,
+ -17, 23, 2, -49, 22, -9, -8, 86,
+ 49, -43, -60, 1, 10, 45, 36, -53,
+ -4, 33, 38, 48, -72, 1, 19, 21,
+ -65, 4, -5, -62, 27, -25, 17, -6,
+ 6, -45, -39, -46, 4, 26, 127, -9,
+ 18, -33, -18, -3, 33, 2, -5, 15,
+ -26, -22, -117, -63, -17, -59, 61, -74,
+ 7, -47, -58, -128, -67, 15, -16, -128,
+ 12, 2, 20, 9, -48, -40, 43, 3,
+ -40, -16, -38, -6, -22, -28, -16, -59,
+ -22, 6, -5, 11, -12, -66, -40, 27,
+ -62, -44, -19, 38, -3, 39, -8, 40,
+ -24, 13, 21, 50, -60, -22, 53, -29,
+ -6, 1, 22, -59, 0, 17, -39, 115
+};
+
+static const opus_int8 layer1_bias[72] = {
+ -42, 20, 16, 0, 105, 60, 1, -97,
+ 24, 60, 18, 13, 62, 25, 127, 34,
+ 79, 55, 118, 127, 95, 31, -4, 87,
+ 21, 12, 2, -14, 18, 23, 8, 17,
+ -1, -8, 5, 4, 24, 37, 21, 13,
+ 36, 13, 17, 18, 37, 30, 33, 1,
+ 8, -16, -11, -5, -31, -3, -5, 0,
+ 6, 3, 58, -7, -1, -16, 5, -13,
+ 16, 10, -2, -14, 11, -4, 3, -11
+};
+
+static const opus_int8 layer2_weights[48] = {
+ -113, -88, 31, -128, -126, -61, 85, -35,
+ 118, -128, -61, 127, -128, -17, -128, 127,
+ 104, -9, -128, 33, 45, 127, 5, 83,
+ 84, -128, -85, -128, -45, 48, -53, -128,
+ 46, 127, -17, 125, 117, -41, -117, -91,
+ -127, -68, -1, -89, -80, 32, 106, 7
+};
+
+static const opus_int8 layer2_bias[2] = {
+ 14, 117
+};
+
+const DenseLayer layer0 = {
+ layer0_bias,
+ layer0_weights,
+ 25, 32, 0
+};
+
+const GRULayer layer1 = {
+ layer1_bias,
+ layer1_weights,
+ layer1_recur_weights,
+ 32, 24
+};
+
+const DenseLayer layer2 = {
+ layer2_bias,
+ layer2_weights,
+ 24, 2, 1
+};
+
diff --git a/media/libopus/src/opus.c b/media/libopus/src/opus.c
new file mode 100644
index 0000000000..538b5ea74e
--- /dev/null
+++ b/media/libopus/src/opus.c
@@ -0,0 +1,356 @@
+/* Copyright (c) 2011 Xiph.Org Foundation, Skype Limited
+ Written by Jean-Marc Valin and Koen Vos */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "opus.h"
+#include "opus_private.h"
+
+#ifndef DISABLE_FLOAT_API
+OPUS_EXPORT void opus_pcm_soft_clip(float *_x, int N, int C, float *declip_mem)
+{
+ int c;
+ int i;
+ float *x;
+
+ if (C<1 || N<1 || !_x || !declip_mem) return;
+
+ /* First thing: saturate everything to +/- 2 which is the highest level our
+ non-linearity can handle. At the point where the signal reaches +/-2,
+ the derivative will be zero anyway, so this doesn't introduce any
+ discontinuity in the derivative. */
+ for (i=0;i<N*C;i++)
+ _x[i] = MAX16(-2.f, MIN16(2.f, _x[i]));
+ for (c=0;c<C;c++)
+ {
+ float a;
+ float x0;
+ int curr;
+
+ x = _x+c;
+ a = declip_mem[c];
+ /* Continue applying the non-linearity from the previous frame to avoid
+ any discontinuity. */
+ for (i=0;i<N;i++)
+ {
+ if (x[i*C]*a>=0)
+ break;
+ x[i*C] = x[i*C]+a*x[i*C]*x[i*C];
+ }
+
+ curr=0;
+ x0 = x[0];
+ while(1)
+ {
+ int start, end;
+ float maxval;
+ int special=0;
+ int peak_pos;
+ for (i=curr;i<N;i++)
+ {
+ if (x[i*C]>1 || x[i*C]<-1)
+ break;
+ }
+ if (i==N)
+ {
+ a=0;
+ break;
+ }
+ peak_pos = i;
+ start=end=i;
+ maxval=ABS16(x[i*C]);
+ /* Look for first zero crossing before clipping */
+ while (start>0 && x[i*C]*x[(start-1)*C]>=0)
+ start--;
+ /* Look for first zero crossing after clipping */
+ while (end<N && x[i*C]*x[end*C]>=0)
+ {
+ /* Look for other peaks until the next zero-crossing. */
+ if (ABS16(x[end*C])>maxval)
+ {
+ maxval = ABS16(x[end*C]);
+ peak_pos = end;
+ }
+ end++;
+ }
+ /* Detect the special case where we clip before the first zero crossing */
+ special = (start==0 && x[i*C]*x[0]>=0);
+
+ /* Compute a such that maxval + a*maxval^2 = 1 */
+ a=(maxval-1)/(maxval*maxval);
+ /* Slightly boost "a" by 2^-22. This is just enough to ensure -ffast-math
+ does not cause output values larger than +/-1, but small enough not
+ to matter even for 24-bit output. */
+ a += a*2.4e-7f;
+ if (x[i*C]>0)
+ a = -a;
+ /* Apply soft clipping */
+ for (i=start;i<end;i++)
+ x[i*C] = x[i*C]+a*x[i*C]*x[i*C];
+
+ if (special && peak_pos>=2)
+ {
+ /* Add a linear ramp from the first sample to the signal peak.
+ This avoids a discontinuity at the beginning of the frame. */
+ float delta;
+ float offset = x0-x[0];
+ delta = offset / peak_pos;
+ for (i=curr;i<peak_pos;i++)
+ {
+ offset -= delta;
+ x[i*C] += offset;
+ x[i*C] = MAX16(-1.f, MIN16(1.f, x[i*C]));
+ }
+ }
+ curr = end;
+ if (curr==N)
+ break;
+ }
+ declip_mem[c] = a;
+ }
+}
+#endif
+
+int encode_size(int size, unsigned char *data)
+{
+ if (size < 252)
+ {
+ data[0] = size;
+ return 1;
+ } else {
+ data[0] = 252+(size&0x3);
+ data[1] = (size-(int)data[0])>>2;
+ return 2;
+ }
+}
+
+static int parse_size(const unsigned char *data, opus_int32 len, opus_int16 *size)
+{
+ if (len<1)
+ {
+ *size = -1;
+ return -1;
+ } else if (data[0]<252)
+ {
+ *size = data[0];
+ return 1;
+ } else if (len<2)
+ {
+ *size = -1;
+ return -1;
+ } else {
+ *size = 4*data[1] + data[0];
+ return 2;
+ }
+}
+
+int opus_packet_get_samples_per_frame(const unsigned char *data,
+ opus_int32 Fs)
+{
+ int audiosize;
+ if (data[0]&0x80)
+ {
+ audiosize = ((data[0]>>3)&0x3);
+ audiosize = (Fs<<audiosize)/400;
+ } else if ((data[0]&0x60) == 0x60)
+ {
+ audiosize = (data[0]&0x08) ? Fs/50 : Fs/100;
+ } else {
+ audiosize = ((data[0]>>3)&0x3);
+ if (audiosize == 3)
+ audiosize = Fs*60/1000;
+ else
+ audiosize = (Fs<<audiosize)/100;
+ }
+ return audiosize;
+}
+
+int opus_packet_parse_impl(const unsigned char *data, opus_int32 len,
+ int self_delimited, unsigned char *out_toc,
+ const unsigned char *frames[48], opus_int16 size[48],
+ int *payload_offset, opus_int32 *packet_offset)
+{
+ int i, bytes;
+ int count;
+ int cbr;
+ unsigned char ch, toc;
+ int framesize;
+ opus_int32 last_size;
+ opus_int32 pad = 0;
+ const unsigned char *data0 = data;
+
+ if (size==NULL || len<0)
+ return OPUS_BAD_ARG;
+ if (len==0)
+ return OPUS_INVALID_PACKET;
+
+ framesize = opus_packet_get_samples_per_frame(data, 48000);
+
+ cbr = 0;
+ toc = *data++;
+ len--;
+ last_size = len;
+ switch (toc&0x3)
+ {
+ /* One frame */
+ case 0:
+ count=1;
+ break;
+ /* Two CBR frames */
+ case 1:
+ count=2;
+ cbr = 1;
+ if (!self_delimited)
+ {
+ if (len&0x1)
+ return OPUS_INVALID_PACKET;
+ last_size = len/2;
+ /* If last_size doesn't fit in size[0], we'll catch it later */
+ size[0] = (opus_int16)last_size;
+ }
+ break;
+ /* Two VBR frames */
+ case 2:
+ count = 2;
+ bytes = parse_size(data, len, size);
+ len -= bytes;
+ if (size[0]<0 || size[0] > len)
+ return OPUS_INVALID_PACKET;
+ data += bytes;
+ last_size = len-size[0];
+ break;
+ /* Multiple CBR/VBR frames (from 0 to 120 ms) */
+ default: /*case 3:*/
+ if (len<1)
+ return OPUS_INVALID_PACKET;
+ /* Number of frames encoded in bits 0 to 5 */
+ ch = *data++;
+ count = ch&0x3F;
+ if (count <= 0 || framesize*(opus_int32)count > 5760)
+ return OPUS_INVALID_PACKET;
+ len--;
+ /* Padding flag is bit 6 */
+ if (ch&0x40)
+ {
+ int p;
+ do {
+ int tmp;
+ if (len<=0)
+ return OPUS_INVALID_PACKET;
+ p = *data++;
+ len--;
+ tmp = p==255 ? 254: p;
+ len -= tmp;
+ pad += tmp;
+ } while (p==255);
+ }
+ if (len<0)
+ return OPUS_INVALID_PACKET;
+ /* VBR flag is bit 7 */
+ cbr = !(ch&0x80);
+ if (!cbr)
+ {
+ /* VBR case */
+ last_size = len;
+ for (i=0;i<count-1;i++)
+ {
+ bytes = parse_size(data, len, size+i);
+ len -= bytes;
+ if (size[i]<0 || size[i] > len)
+ return OPUS_INVALID_PACKET;
+ data += bytes;
+ last_size -= bytes+size[i];
+ }
+ if (last_size<0)
+ return OPUS_INVALID_PACKET;
+ } else if (!self_delimited)
+ {
+ /* CBR case */
+ last_size = len/count;
+ if (last_size*count!=len)
+ return OPUS_INVALID_PACKET;
+ for (i=0;i<count-1;i++)
+ size[i] = (opus_int16)last_size;
+ }
+ break;
+ }
+ /* Self-delimited framing has an extra size for the last frame. */
+ if (self_delimited)
+ {
+ bytes = parse_size(data, len, size+count-1);
+ len -= bytes;
+ if (size[count-1]<0 || size[count-1] > len)
+ return OPUS_INVALID_PACKET;
+ data += bytes;
+ /* For CBR packets, apply the size to all the frames. */
+ if (cbr)
+ {
+ if (size[count-1]*count > len)
+ return OPUS_INVALID_PACKET;
+ for (i=0;i<count-1;i++)
+ size[i] = size[count-1];
+ } else if (bytes+size[count-1] > last_size)
+ return OPUS_INVALID_PACKET;
+ } else
+ {
+ /* Because it's not encoded explicitly, it's possible the size of the
+ last packet (or all the packets, for the CBR case) is larger than
+ 1275. Reject them here.*/
+ if (last_size > 1275)
+ return OPUS_INVALID_PACKET;
+ size[count-1] = (opus_int16)last_size;
+ }
+
+ if (payload_offset)
+ *payload_offset = (int)(data-data0);
+
+ for (i=0;i<count;i++)
+ {
+ if (frames)
+ frames[i] = data;
+ data += size[i];
+ }
+
+ if (packet_offset)
+ *packet_offset = pad+(opus_int32)(data-data0);
+
+ if (out_toc)
+ *out_toc = toc;
+
+ return count;
+}
+
+int opus_packet_parse(const unsigned char *data, opus_int32 len,
+ unsigned char *out_toc, const unsigned char *frames[48],
+ opus_int16 size[48], int *payload_offset)
+{
+ return opus_packet_parse_impl(data, len, 0, out_toc,
+ frames, size, payload_offset, NULL);
+}
+
diff --git a/media/libopus/src/opus_decoder.c b/media/libopus/src/opus_decoder.c
new file mode 100644
index 0000000000..6520e748ea
--- /dev/null
+++ b/media/libopus/src/opus_decoder.c
@@ -0,0 +1,1041 @@
+/* Copyright (c) 2010 Xiph.Org Foundation, Skype Limited
+ Written by Jean-Marc Valin and Koen Vos */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifndef OPUS_BUILD
+# error "OPUS_BUILD _MUST_ be defined to build Opus. This probably means you need other defines as well, as in a config.h. See the included build files for details."
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ >= 2) && !defined(__OPTIMIZE__) && !defined(OPUS_WILL_BE_SLOW)
+# pragma message "You appear to be compiling without optimization, if so opus will be very slow."
+#endif
+
+#include <stdarg.h>
+#include "celt.h"
+#include "opus.h"
+#include "entdec.h"
+#include "modes.h"
+#include "API.h"
+#include "stack_alloc.h"
+#include "float_cast.h"
+#include "opus_private.h"
+#include "os_support.h"
+#include "structs.h"
+#include "define.h"
+#include "mathops.h"
+#include "cpu_support.h"
+
+struct OpusDecoder {
+ int celt_dec_offset;
+ int silk_dec_offset;
+ int channels;
+ opus_int32 Fs; /** Sampling rate (at the API level) */
+ silk_DecControlStruct DecControl;
+ int decode_gain;
+ int arch;
+
+ /* Everything beyond this point gets cleared on a reset */
+#define OPUS_DECODER_RESET_START stream_channels
+ int stream_channels;
+
+ int bandwidth;
+ int mode;
+ int prev_mode;
+ int frame_size;
+ int prev_redundancy;
+ int last_packet_duration;
+#ifndef FIXED_POINT
+ opus_val16 softclip_mem[2];
+#endif
+
+ opus_uint32 rangeFinal;
+};
+
+#if defined(ENABLE_HARDENING) || defined(ENABLE_ASSERTIONS)
+static void validate_opus_decoder(OpusDecoder *st)
+{
+ celt_assert(st->channels == 1 || st->channels == 2);
+ celt_assert(st->Fs == 48000 || st->Fs == 24000 || st->Fs == 16000 || st->Fs == 12000 || st->Fs == 8000);
+ celt_assert(st->DecControl.API_sampleRate == st->Fs);
+ celt_assert(st->DecControl.internalSampleRate == 0 || st->DecControl.internalSampleRate == 16000 || st->DecControl.internalSampleRate == 12000 || st->DecControl.internalSampleRate == 8000);
+ celt_assert(st->DecControl.nChannelsAPI == st->channels);
+ celt_assert(st->DecControl.nChannelsInternal == 0 || st->DecControl.nChannelsInternal == 1 || st->DecControl.nChannelsInternal == 2);
+ celt_assert(st->DecControl.payloadSize_ms == 0 || st->DecControl.payloadSize_ms == 10 || st->DecControl.payloadSize_ms == 20 || st->DecControl.payloadSize_ms == 40 || st->DecControl.payloadSize_ms == 60);
+#ifdef OPUS_ARCHMASK
+ celt_assert(st->arch >= 0);
+ celt_assert(st->arch <= OPUS_ARCHMASK);
+#endif
+ celt_assert(st->stream_channels == 1 || st->stream_channels == 2);
+}
+#define VALIDATE_OPUS_DECODER(st) validate_opus_decoder(st)
+#else
+#define VALIDATE_OPUS_DECODER(st)
+#endif
+
+int opus_decoder_get_size(int channels)
+{
+ int silkDecSizeBytes, celtDecSizeBytes;
+ int ret;
+ if (channels<1 || channels > 2)
+ return 0;
+ ret = silk_Get_Decoder_Size( &silkDecSizeBytes );
+ if(ret)
+ return 0;
+ silkDecSizeBytes = align(silkDecSizeBytes);
+ celtDecSizeBytes = celt_decoder_get_size(channels);
+ return align(sizeof(OpusDecoder))+silkDecSizeBytes+celtDecSizeBytes;
+}
+
+int opus_decoder_init(OpusDecoder *st, opus_int32 Fs, int channels)
+{
+ void *silk_dec;
+ CELTDecoder *celt_dec;
+ int ret, silkDecSizeBytes;
+
+ if ((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)
+ || (channels!=1&&channels!=2))
+ return OPUS_BAD_ARG;
+
+ OPUS_CLEAR((char*)st, opus_decoder_get_size(channels));
+ /* Initialize SILK decoder */
+ ret = silk_Get_Decoder_Size(&silkDecSizeBytes);
+ if (ret)
+ return OPUS_INTERNAL_ERROR;
+
+ silkDecSizeBytes = align(silkDecSizeBytes);
+ st->silk_dec_offset = align(sizeof(OpusDecoder));
+ st->celt_dec_offset = st->silk_dec_offset+silkDecSizeBytes;
+ silk_dec = (char*)st+st->silk_dec_offset;
+ celt_dec = (CELTDecoder*)((char*)st+st->celt_dec_offset);
+ st->stream_channels = st->channels = channels;
+
+ st->Fs = Fs;
+ st->DecControl.API_sampleRate = st->Fs;
+ st->DecControl.nChannelsAPI = st->channels;
+
+ /* Reset decoder */
+ ret = silk_InitDecoder( silk_dec );
+ if(ret)return OPUS_INTERNAL_ERROR;
+
+ /* Initialize CELT decoder */
+ ret = celt_decoder_init(celt_dec, Fs, channels);
+ if(ret!=OPUS_OK)return OPUS_INTERNAL_ERROR;
+
+ celt_decoder_ctl(celt_dec, CELT_SET_SIGNALLING(0));
+
+ st->prev_mode = 0;
+ st->frame_size = Fs/400;
+ st->arch = opus_select_arch();
+ return OPUS_OK;
+}
+
+OpusDecoder *opus_decoder_create(opus_int32 Fs, int channels, int *error)
+{
+ int ret;
+ OpusDecoder *st;
+ if ((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)
+ || (channels!=1&&channels!=2))
+ {
+ if (error)
+ *error = OPUS_BAD_ARG;
+ return NULL;
+ }
+ st = (OpusDecoder *)opus_alloc(opus_decoder_get_size(channels));
+ if (st == NULL)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ ret = opus_decoder_init(st, Fs, channels);
+ if (error)
+ *error = ret;
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ return st;
+}
+
+static void smooth_fade(const opus_val16 *in1, const opus_val16 *in2,
+ opus_val16 *out, int overlap, int channels,
+ const opus_val16 *window, opus_int32 Fs)
+{
+ int i, c;
+ int inc = 48000/Fs;
+ for (c=0;c<channels;c++)
+ {
+ for (i=0;i<overlap;i++)
+ {
+ opus_val16 w = MULT16_16_Q15(window[i*inc], window[i*inc]);
+ out[i*channels+c] = SHR32(MAC16_16(MULT16_16(w,in2[i*channels+c]),
+ Q15ONE-w, in1[i*channels+c]), 15);
+ }
+ }
+}
+
+static int opus_packet_get_mode(const unsigned char *data)
+{
+ int mode;
+ if (data[0]&0x80)
+ {
+ mode = MODE_CELT_ONLY;
+ } else if ((data[0]&0x60) == 0x60)
+ {
+ mode = MODE_HYBRID;
+ } else {
+ mode = MODE_SILK_ONLY;
+ }
+ return mode;
+}
+
+static int opus_decode_frame(OpusDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec)
+{
+ void *silk_dec;
+ CELTDecoder *celt_dec;
+ int i, silk_ret=0, celt_ret=0;
+ ec_dec dec;
+ opus_int32 silk_frame_size;
+ int pcm_silk_size;
+ VARDECL(opus_int16, pcm_silk);
+ int pcm_transition_silk_size;
+ VARDECL(opus_val16, pcm_transition_silk);
+ int pcm_transition_celt_size;
+ VARDECL(opus_val16, pcm_transition_celt);
+ opus_val16 *pcm_transition=NULL;
+ int redundant_audio_size;
+ VARDECL(opus_val16, redundant_audio);
+
+ int audiosize;
+ int mode;
+ int bandwidth;
+ int transition=0;
+ int start_band;
+ int redundancy=0;
+ int redundancy_bytes = 0;
+ int celt_to_silk=0;
+ int c;
+ int F2_5, F5, F10, F20;
+ const opus_val16 *window;
+ opus_uint32 redundant_rng = 0;
+ int celt_accum;
+ ALLOC_STACK;
+
+ silk_dec = (char*)st+st->silk_dec_offset;
+ celt_dec = (CELTDecoder*)((char*)st+st->celt_dec_offset);
+ F20 = st->Fs/50;
+ F10 = F20>>1;
+ F5 = F10>>1;
+ F2_5 = F5>>1;
+ if (frame_size < F2_5)
+ {
+ RESTORE_STACK;
+ return OPUS_BUFFER_TOO_SMALL;
+ }
+ /* Limit frame_size to avoid excessive stack allocations. */
+ frame_size = IMIN(frame_size, st->Fs/25*3);
+ /* Payloads of 1 (2 including ToC) or 0 trigger the PLC/DTX */
+ if (len<=1)
+ {
+ data = NULL;
+ /* In that case, don't conceal more than what the ToC says */
+ frame_size = IMIN(frame_size, st->frame_size);
+ }
+ if (data != NULL)
+ {
+ audiosize = st->frame_size;
+ mode = st->mode;
+ bandwidth = st->bandwidth;
+ ec_dec_init(&dec,(unsigned char*)data,len);
+ } else {
+ audiosize = frame_size;
+ /* Run PLC using last used mode (CELT if we ended with CELT redundancy) */
+ mode = st->prev_redundancy ? MODE_CELT_ONLY : st->prev_mode;
+ bandwidth = 0;
+
+ if (mode == 0)
+ {
+ /* If we haven't got any packet yet, all we can do is return zeros */
+ for (i=0;i<audiosize*st->channels;i++)
+ pcm[i] = 0;
+ RESTORE_STACK;
+ return audiosize;
+ }
+
+ /* Avoids trying to run the PLC on sizes other than 2.5 (CELT), 5 (CELT),
+ 10, or 20 (e.g. 12.5 or 30 ms). */
+ if (audiosize > F20)
+ {
+ do {
+ int ret = opus_decode_frame(st, NULL, 0, pcm, IMIN(audiosize, F20), 0);
+ if (ret<0)
+ {
+ RESTORE_STACK;
+ return ret;
+ }
+ pcm += ret*st->channels;
+ audiosize -= ret;
+ } while (audiosize > 0);
+ RESTORE_STACK;
+ return frame_size;
+ } else if (audiosize < F20)
+ {
+ if (audiosize > F10)
+ audiosize = F10;
+ else if (mode != MODE_SILK_ONLY && audiosize > F5 && audiosize < F10)
+ audiosize = F5;
+ }
+ }
+
+ /* In fixed-point, we can tell CELT to do the accumulation on top of the
+ SILK PCM buffer. This saves some stack space. */
+#ifdef FIXED_POINT
+ celt_accum = (mode != MODE_CELT_ONLY) && (frame_size >= F10);
+#else
+ celt_accum = 0;
+#endif
+
+ pcm_transition_silk_size = ALLOC_NONE;
+ pcm_transition_celt_size = ALLOC_NONE;
+ if (data!=NULL && st->prev_mode > 0 && (
+ (mode == MODE_CELT_ONLY && st->prev_mode != MODE_CELT_ONLY && !st->prev_redundancy)
+ || (mode != MODE_CELT_ONLY && st->prev_mode == MODE_CELT_ONLY) )
+ )
+ {
+ transition = 1;
+ /* Decide where to allocate the stack memory for pcm_transition */
+ if (mode == MODE_CELT_ONLY)
+ pcm_transition_celt_size = F5*st->channels;
+ else
+ pcm_transition_silk_size = F5*st->channels;
+ }
+ ALLOC(pcm_transition_celt, pcm_transition_celt_size, opus_val16);
+ if (transition && mode == MODE_CELT_ONLY)
+ {
+ pcm_transition = pcm_transition_celt;
+ opus_decode_frame(st, NULL, 0, pcm_transition, IMIN(F5, audiosize), 0);
+ }
+ if (audiosize > frame_size)
+ {
+ /*fprintf(stderr, "PCM buffer too small: %d vs %d (mode = %d)\n", audiosize, frame_size, mode);*/
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ } else {
+ frame_size = audiosize;
+ }
+
+ /* Don't allocate any memory when in CELT-only mode */
+ pcm_silk_size = (mode != MODE_CELT_ONLY && !celt_accum) ? IMAX(F10, frame_size)*st->channels : ALLOC_NONE;
+ ALLOC(pcm_silk, pcm_silk_size, opus_int16);
+
+ /* SILK processing */
+ if (mode != MODE_CELT_ONLY)
+ {
+ int lost_flag, decoded_samples;
+ opus_int16 *pcm_ptr;
+#ifdef FIXED_POINT
+ if (celt_accum)
+ pcm_ptr = pcm;
+ else
+#endif
+ pcm_ptr = pcm_silk;
+
+ if (st->prev_mode==MODE_CELT_ONLY)
+ silk_InitDecoder( silk_dec );
+
+ /* The SILK PLC cannot produce frames of less than 10 ms */
+ st->DecControl.payloadSize_ms = IMAX(10, 1000 * audiosize / st->Fs);
+
+ if (data != NULL)
+ {
+ st->DecControl.nChannelsInternal = st->stream_channels;
+ if( mode == MODE_SILK_ONLY ) {
+ if( bandwidth == OPUS_BANDWIDTH_NARROWBAND ) {
+ st->DecControl.internalSampleRate = 8000;
+ } else if( bandwidth == OPUS_BANDWIDTH_MEDIUMBAND ) {
+ st->DecControl.internalSampleRate = 12000;
+ } else if( bandwidth == OPUS_BANDWIDTH_WIDEBAND ) {
+ st->DecControl.internalSampleRate = 16000;
+ } else {
+ st->DecControl.internalSampleRate = 16000;
+ celt_assert( 0 );
+ }
+ } else {
+ /* Hybrid mode */
+ st->DecControl.internalSampleRate = 16000;
+ }
+ }
+
+ lost_flag = data == NULL ? 1 : 2 * decode_fec;
+ decoded_samples = 0;
+ do {
+ /* Call SILK decoder */
+ int first_frame = decoded_samples == 0;
+ silk_ret = silk_Decode( silk_dec, &st->DecControl,
+ lost_flag, first_frame, &dec, pcm_ptr, &silk_frame_size, st->arch );
+ if( silk_ret ) {
+ if (lost_flag) {
+ /* PLC failure should not be fatal */
+ silk_frame_size = frame_size;
+ for (i=0;i<frame_size*st->channels;i++)
+ pcm_ptr[i] = 0;
+ } else {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ }
+ pcm_ptr += silk_frame_size * st->channels;
+ decoded_samples += silk_frame_size;
+ } while( decoded_samples < frame_size );
+ }
+
+ start_band = 0;
+ if (!decode_fec && mode != MODE_CELT_ONLY && data != NULL
+ && ec_tell(&dec)+17+20*(mode == MODE_HYBRID) <= 8*len)
+ {
+ /* Check if we have a redundant 0-8 kHz band */
+ if (mode == MODE_HYBRID)
+ redundancy = ec_dec_bit_logp(&dec, 12);
+ else
+ redundancy = 1;
+ if (redundancy)
+ {
+ celt_to_silk = ec_dec_bit_logp(&dec, 1);
+ /* redundancy_bytes will be at least two, in the non-hybrid
+ case due to the ec_tell() check above */
+ redundancy_bytes = mode==MODE_HYBRID ?
+ (opus_int32)ec_dec_uint(&dec, 256)+2 :
+ len-((ec_tell(&dec)+7)>>3);
+ len -= redundancy_bytes;
+ /* This is a sanity check. It should never happen for a valid
+ packet, so the exact behaviour is not normative. */
+ if (len*8 < ec_tell(&dec))
+ {
+ len = 0;
+ redundancy_bytes = 0;
+ redundancy = 0;
+ }
+ /* Shrink decoder because of raw bits */
+ dec.storage -= redundancy_bytes;
+ }
+ }
+ if (mode != MODE_CELT_ONLY)
+ start_band = 17;
+
+ if (redundancy)
+ {
+ transition = 0;
+ pcm_transition_silk_size=ALLOC_NONE;
+ }
+
+ ALLOC(pcm_transition_silk, pcm_transition_silk_size, opus_val16);
+
+ if (transition && mode != MODE_CELT_ONLY)
+ {
+ pcm_transition = pcm_transition_silk;
+ opus_decode_frame(st, NULL, 0, pcm_transition, IMIN(F5, audiosize), 0);
+ }
+
+
+ if (bandwidth)
+ {
+ int endband=21;
+
+ switch(bandwidth)
+ {
+ case OPUS_BANDWIDTH_NARROWBAND:
+ endband = 13;
+ break;
+ case OPUS_BANDWIDTH_MEDIUMBAND:
+ case OPUS_BANDWIDTH_WIDEBAND:
+ endband = 17;
+ break;
+ case OPUS_BANDWIDTH_SUPERWIDEBAND:
+ endband = 19;
+ break;
+ case OPUS_BANDWIDTH_FULLBAND:
+ endband = 21;
+ break;
+ default:
+ celt_assert(0);
+ break;
+ }
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_SET_END_BAND(endband)));
+ }
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_SET_CHANNELS(st->stream_channels)));
+
+ /* Only allocation memory for redundancy if/when needed */
+ redundant_audio_size = redundancy ? F5*st->channels : ALLOC_NONE;
+ ALLOC(redundant_audio, redundant_audio_size, opus_val16);
+
+ /* 5 ms redundant frame for CELT->SILK*/
+ if (redundancy && celt_to_silk)
+ {
+ /* If the previous frame did not use CELT (the first redundancy frame in
+ a transition from SILK may have been lost) then the CELT decoder is
+ stale at this point and the redundancy audio is not useful, however
+ the final range is still needed (for testing), so the redundancy is
+ always decoded but the decoded audio may not be used */
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(0)));
+ celt_decode_with_ec(celt_dec, data+len, redundancy_bytes,
+ redundant_audio, F5, NULL, 0);
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, OPUS_GET_FINAL_RANGE(&redundant_rng)));
+ }
+
+ /* MUST be after PLC */
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(start_band)));
+
+ if (mode != MODE_SILK_ONLY)
+ {
+ int celt_frame_size = IMIN(F20, frame_size);
+ /* Make sure to discard any previous CELT state */
+ if (mode != st->prev_mode && st->prev_mode > 0 && !st->prev_redundancy)
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, OPUS_RESET_STATE));
+ /* Decode CELT */
+ celt_ret = celt_decode_with_ec(celt_dec, decode_fec ? NULL : data,
+ len, pcm, celt_frame_size, &dec, celt_accum);
+ } else {
+ unsigned char silence[2] = {0xFF, 0xFF};
+ if (!celt_accum)
+ {
+ for (i=0;i<frame_size*st->channels;i++)
+ pcm[i] = 0;
+ }
+ /* For hybrid -> SILK transitions, we let the CELT MDCT
+ do a fade-out by decoding a silence frame */
+ if (st->prev_mode == MODE_HYBRID && !(redundancy && celt_to_silk && st->prev_redundancy) )
+ {
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(0)));
+ celt_decode_with_ec(celt_dec, silence, 2, pcm, F2_5, NULL, celt_accum);
+ }
+ }
+
+ if (mode != MODE_CELT_ONLY && !celt_accum)
+ {
+#ifdef FIXED_POINT
+ for (i=0;i<frame_size*st->channels;i++)
+ pcm[i] = SAT16(ADD32(pcm[i], pcm_silk[i]));
+#else
+ for (i=0;i<frame_size*st->channels;i++)
+ pcm[i] = pcm[i] + (opus_val16)((1.f/32768.f)*pcm_silk[i]);
+#endif
+ }
+
+ {
+ const CELTMode *celt_mode;
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_GET_MODE(&celt_mode)));
+ window = celt_mode->window;
+ }
+
+ /* 5 ms redundant frame for SILK->CELT */
+ if (redundancy && !celt_to_silk)
+ {
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, OPUS_RESET_STATE));
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(0)));
+
+ celt_decode_with_ec(celt_dec, data+len, redundancy_bytes, redundant_audio, F5, NULL, 0);
+ MUST_SUCCEED(celt_decoder_ctl(celt_dec, OPUS_GET_FINAL_RANGE(&redundant_rng)));
+ smooth_fade(pcm+st->channels*(frame_size-F2_5), redundant_audio+st->channels*F2_5,
+ pcm+st->channels*(frame_size-F2_5), F2_5, st->channels, window, st->Fs);
+ }
+ /* 5ms redundant frame for CELT->SILK; ignore if the previous frame did not
+ use CELT (the first redundancy frame in a transition from SILK may have
+ been lost) */
+ if (redundancy && celt_to_silk && (st->prev_mode != MODE_SILK_ONLY || st->prev_redundancy))
+ {
+ for (c=0;c<st->channels;c++)
+ {
+ for (i=0;i<F2_5;i++)
+ pcm[st->channels*i+c] = redundant_audio[st->channels*i+c];
+ }
+ smooth_fade(redundant_audio+st->channels*F2_5, pcm+st->channels*F2_5,
+ pcm+st->channels*F2_5, F2_5, st->channels, window, st->Fs);
+ }
+ if (transition)
+ {
+ if (audiosize >= F5)
+ {
+ for (i=0;i<st->channels*F2_5;i++)
+ pcm[i] = pcm_transition[i];
+ smooth_fade(pcm_transition+st->channels*F2_5, pcm+st->channels*F2_5,
+ pcm+st->channels*F2_5, F2_5,
+ st->channels, window, st->Fs);
+ } else {
+ /* Not enough time to do a clean transition, but we do it anyway
+ This will not preserve amplitude perfectly and may introduce
+ a bit of temporal aliasing, but it shouldn't be too bad and
+ that's pretty much the best we can do. In any case, generating this
+ transition it pretty silly in the first place */
+ smooth_fade(pcm_transition, pcm,
+ pcm, F2_5,
+ st->channels, window, st->Fs);
+ }
+ }
+
+ if(st->decode_gain)
+ {
+ opus_val32 gain;
+ gain = celt_exp2(MULT16_16_P15(QCONST16(6.48814081e-4f, 25), st->decode_gain));
+ for (i=0;i<frame_size*st->channels;i++)
+ {
+ opus_val32 x;
+ x = MULT16_32_P16(pcm[i],gain);
+ pcm[i] = SATURATE(x, 32767);
+ }
+ }
+
+ if (len <= 1)
+ st->rangeFinal = 0;
+ else
+ st->rangeFinal = dec.rng ^ redundant_rng;
+
+ st->prev_mode = mode;
+ st->prev_redundancy = redundancy && !celt_to_silk;
+
+ if (celt_ret>=0)
+ {
+ if (OPUS_CHECK_ARRAY(pcm, audiosize*st->channels))
+ OPUS_PRINT_INT(audiosize);
+ }
+
+ RESTORE_STACK;
+ return celt_ret < 0 ? celt_ret : audiosize;
+
+}
+
+int opus_decode_native(OpusDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec,
+ int self_delimited, opus_int32 *packet_offset, int soft_clip)
+{
+ int i, nb_samples;
+ int count, offset;
+ unsigned char toc;
+ int packet_frame_size, packet_bandwidth, packet_mode, packet_stream_channels;
+ /* 48 x 2.5 ms = 120 ms */
+ opus_int16 size[48];
+ VALIDATE_OPUS_DECODER(st);
+ if (decode_fec<0 || decode_fec>1)
+ return OPUS_BAD_ARG;
+ /* For FEC/PLC, frame_size has to be to have a multiple of 2.5 ms */
+ if ((decode_fec || len==0 || data==NULL) && frame_size%(st->Fs/400)!=0)
+ return OPUS_BAD_ARG;
+ if (len==0 || data==NULL)
+ {
+ int pcm_count=0;
+ do {
+ int ret;
+ ret = opus_decode_frame(st, NULL, 0, pcm+pcm_count*st->channels, frame_size-pcm_count, 0);
+ if (ret<0)
+ return ret;
+ pcm_count += ret;
+ } while (pcm_count < frame_size);
+ celt_assert(pcm_count == frame_size);
+ if (OPUS_CHECK_ARRAY(pcm, pcm_count*st->channels))
+ OPUS_PRINT_INT(pcm_count);
+ st->last_packet_duration = pcm_count;
+ return pcm_count;
+ } else if (len<0)
+ return OPUS_BAD_ARG;
+
+ packet_mode = opus_packet_get_mode(data);
+ packet_bandwidth = opus_packet_get_bandwidth(data);
+ packet_frame_size = opus_packet_get_samples_per_frame(data, st->Fs);
+ packet_stream_channels = opus_packet_get_nb_channels(data);
+
+ count = opus_packet_parse_impl(data, len, self_delimited, &toc, NULL,
+ size, &offset, packet_offset);
+ if (count<0)
+ return count;
+
+ data += offset;
+
+ if (decode_fec)
+ {
+ int duration_copy;
+ int ret;
+ /* If no FEC can be present, run the PLC (recursive call) */
+ if (frame_size < packet_frame_size || packet_mode == MODE_CELT_ONLY || st->mode == MODE_CELT_ONLY)
+ return opus_decode_native(st, NULL, 0, pcm, frame_size, 0, 0, NULL, soft_clip);
+ /* Otherwise, run the PLC on everything except the size for which we might have FEC */
+ duration_copy = st->last_packet_duration;
+ if (frame_size-packet_frame_size!=0)
+ {
+ ret = opus_decode_native(st, NULL, 0, pcm, frame_size-packet_frame_size, 0, 0, NULL, soft_clip);
+ if (ret<0)
+ {
+ st->last_packet_duration = duration_copy;
+ return ret;
+ }
+ celt_assert(ret==frame_size-packet_frame_size);
+ }
+ /* Complete with FEC */
+ st->mode = packet_mode;
+ st->bandwidth = packet_bandwidth;
+ st->frame_size = packet_frame_size;
+ st->stream_channels = packet_stream_channels;
+ ret = opus_decode_frame(st, data, size[0], pcm+st->channels*(frame_size-packet_frame_size),
+ packet_frame_size, 1);
+ if (ret<0)
+ return ret;
+ else {
+ if (OPUS_CHECK_ARRAY(pcm, frame_size*st->channels))
+ OPUS_PRINT_INT(frame_size);
+ st->last_packet_duration = frame_size;
+ return frame_size;
+ }
+ }
+
+ if (count*packet_frame_size > frame_size)
+ return OPUS_BUFFER_TOO_SMALL;
+
+ /* Update the state as the last step to avoid updating it on an invalid packet */
+ st->mode = packet_mode;
+ st->bandwidth = packet_bandwidth;
+ st->frame_size = packet_frame_size;
+ st->stream_channels = packet_stream_channels;
+
+ nb_samples=0;
+ for (i=0;i<count;i++)
+ {
+ int ret;
+ ret = opus_decode_frame(st, data, size[i], pcm+nb_samples*st->channels, frame_size-nb_samples, 0);
+ if (ret<0)
+ return ret;
+ celt_assert(ret==packet_frame_size);
+ data += size[i];
+ nb_samples += ret;
+ }
+ st->last_packet_duration = nb_samples;
+ if (OPUS_CHECK_ARRAY(pcm, nb_samples*st->channels))
+ OPUS_PRINT_INT(nb_samples);
+#ifndef FIXED_POINT
+ if (soft_clip)
+ opus_pcm_soft_clip(pcm, nb_samples, st->channels, st->softclip_mem);
+ else
+ st->softclip_mem[0]=st->softclip_mem[1]=0;
+#endif
+ return nb_samples;
+}
+
+#ifdef FIXED_POINT
+
+int opus_decode(OpusDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec)
+{
+ if(frame_size<=0)
+ return OPUS_BAD_ARG;
+ return opus_decode_native(st, data, len, pcm, frame_size, decode_fec, 0, NULL, 0);
+}
+
+#ifndef DISABLE_FLOAT_API
+int opus_decode_float(OpusDecoder *st, const unsigned char *data,
+ opus_int32 len, float *pcm, int frame_size, int decode_fec)
+{
+ VARDECL(opus_int16, out);
+ int ret, i;
+ int nb_samples;
+ ALLOC_STACK;
+
+ if(frame_size<=0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ if (data != NULL && len > 0 && !decode_fec)
+ {
+ nb_samples = opus_decoder_get_nb_samples(st, data, len);
+ if (nb_samples>0)
+ frame_size = IMIN(frame_size, nb_samples);
+ else
+ return OPUS_INVALID_PACKET;
+ }
+ celt_assert(st->channels == 1 || st->channels == 2);
+ ALLOC(out, frame_size*st->channels, opus_int16);
+
+ ret = opus_decode_native(st, data, len, out, frame_size, decode_fec, 0, NULL, 0);
+ if (ret > 0)
+ {
+ for (i=0;i<ret*st->channels;i++)
+ pcm[i] = (1.f/32768.f)*(out[i]);
+ }
+ RESTORE_STACK;
+ return ret;
+}
+#endif
+
+
+#else
+int opus_decode(OpusDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_int16 *pcm, int frame_size, int decode_fec)
+{
+ VARDECL(float, out);
+ int ret, i;
+ int nb_samples;
+ ALLOC_STACK;
+
+ if(frame_size<=0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+
+ if (data != NULL && len > 0 && !decode_fec)
+ {
+ nb_samples = opus_decoder_get_nb_samples(st, data, len);
+ if (nb_samples>0)
+ frame_size = IMIN(frame_size, nb_samples);
+ else
+ return OPUS_INVALID_PACKET;
+ }
+ celt_assert(st->channels == 1 || st->channels == 2);
+ ALLOC(out, frame_size*st->channels, float);
+
+ ret = opus_decode_native(st, data, len, out, frame_size, decode_fec, 0, NULL, 1);
+ if (ret > 0)
+ {
+ for (i=0;i<ret*st->channels;i++)
+ pcm[i] = FLOAT2INT16(out[i]);
+ }
+ RESTORE_STACK;
+ return ret;
+}
+
+int opus_decode_float(OpusDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec)
+{
+ if(frame_size<=0)
+ return OPUS_BAD_ARG;
+ return opus_decode_native(st, data, len, pcm, frame_size, decode_fec, 0, NULL, 0);
+}
+
+#endif
+
+int opus_decoder_ctl(OpusDecoder *st, int request, ...)
+{
+ int ret = OPUS_OK;
+ va_list ap;
+ void *silk_dec;
+ CELTDecoder *celt_dec;
+
+ silk_dec = (char*)st+st->silk_dec_offset;
+ celt_dec = (CELTDecoder*)((char*)st+st->celt_dec_offset);
+
+
+ va_start(ap, request);
+
+ switch (request)
+ {
+ case OPUS_GET_BANDWIDTH_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->bandwidth;
+ }
+ break;
+ case OPUS_GET_FINAL_RANGE_REQUEST:
+ {
+ opus_uint32 *value = va_arg(ap, opus_uint32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->rangeFinal;
+ }
+ break;
+ case OPUS_RESET_STATE:
+ {
+ OPUS_CLEAR((char*)&st->OPUS_DECODER_RESET_START,
+ sizeof(OpusDecoder)-
+ ((char*)&st->OPUS_DECODER_RESET_START - (char*)st));
+
+ celt_decoder_ctl(celt_dec, OPUS_RESET_STATE);
+ silk_InitDecoder( silk_dec );
+ st->stream_channels = st->channels;
+ st->frame_size = st->Fs/400;
+ }
+ break;
+ case OPUS_GET_SAMPLE_RATE_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->Fs;
+ }
+ break;
+ case OPUS_GET_PITCH_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ if (st->prev_mode == MODE_CELT_ONLY)
+ ret = celt_decoder_ctl(celt_dec, OPUS_GET_PITCH(value));
+ else
+ *value = st->DecControl.prevPitchLag;
+ }
+ break;
+ case OPUS_GET_GAIN_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->decode_gain;
+ }
+ break;
+ case OPUS_SET_GAIN_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value<-32768 || value>32767)
+ {
+ goto bad_arg;
+ }
+ st->decode_gain = value;
+ }
+ break;
+ case OPUS_GET_LAST_PACKET_DURATION_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->last_packet_duration;
+ }
+ break;
+ case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>1)
+ {
+ goto bad_arg;
+ }
+ ret = celt_decoder_ctl(celt_dec, OPUS_SET_PHASE_INVERSION_DISABLED(value));
+ }
+ break;
+ case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ ret = celt_decoder_ctl(celt_dec, OPUS_GET_PHASE_INVERSION_DISABLED(value));
+ }
+ break;
+ default:
+ /*fprintf(stderr, "unknown opus_decoder_ctl() request: %d", request);*/
+ ret = OPUS_UNIMPLEMENTED;
+ break;
+ }
+
+ va_end(ap);
+ return ret;
+bad_arg:
+ va_end(ap);
+ return OPUS_BAD_ARG;
+}
+
+void opus_decoder_destroy(OpusDecoder *st)
+{
+ opus_free(st);
+}
+
+
+int opus_packet_get_bandwidth(const unsigned char *data)
+{
+ int bandwidth;
+ if (data[0]&0x80)
+ {
+ bandwidth = OPUS_BANDWIDTH_MEDIUMBAND + ((data[0]>>5)&0x3);
+ if (bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
+ bandwidth = OPUS_BANDWIDTH_NARROWBAND;
+ } else if ((data[0]&0x60) == 0x60)
+ {
+ bandwidth = (data[0]&0x10) ? OPUS_BANDWIDTH_FULLBAND :
+ OPUS_BANDWIDTH_SUPERWIDEBAND;
+ } else {
+ bandwidth = OPUS_BANDWIDTH_NARROWBAND + ((data[0]>>5)&0x3);
+ }
+ return bandwidth;
+}
+
+int opus_packet_get_nb_channels(const unsigned char *data)
+{
+ return (data[0]&0x4) ? 2 : 1;
+}
+
+int opus_packet_get_nb_frames(const unsigned char packet[], opus_int32 len)
+{
+ int count;
+ if (len<1)
+ return OPUS_BAD_ARG;
+ count = packet[0]&0x3;
+ if (count==0)
+ return 1;
+ else if (count!=3)
+ return 2;
+ else if (len<2)
+ return OPUS_INVALID_PACKET;
+ else
+ return packet[1]&0x3F;
+}
+
+int opus_packet_get_nb_samples(const unsigned char packet[], opus_int32 len,
+ opus_int32 Fs)
+{
+ int samples;
+ int count = opus_packet_get_nb_frames(packet, len);
+
+ if (count<0)
+ return count;
+
+ samples = count*opus_packet_get_samples_per_frame(packet, Fs);
+ /* Can't have more than 120 ms */
+ if (samples*25 > Fs*3)
+ return OPUS_INVALID_PACKET;
+ else
+ return samples;
+}
+
+int opus_decoder_get_nb_samples(const OpusDecoder *dec,
+ const unsigned char packet[], opus_int32 len)
+{
+ return opus_packet_get_nb_samples(packet, len, dec->Fs);
+}
diff --git a/media/libopus/src/opus_encoder.c b/media/libopus/src/opus_encoder.c
new file mode 100644
index 0000000000..8c8db5a546
--- /dev/null
+++ b/media/libopus/src/opus_encoder.c
@@ -0,0 +1,2780 @@
+/* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
+ Written by Jean-Marc Valin and Koen Vos */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdarg.h>
+#include "celt.h"
+#include "entenc.h"
+#include "modes.h"
+#include "API.h"
+#include "stack_alloc.h"
+#include "float_cast.h"
+#include "opus.h"
+#include "arch.h"
+#include "pitch.h"
+#include "opus_private.h"
+#include "os_support.h"
+#include "cpu_support.h"
+#include "analysis.h"
+#include "mathops.h"
+#include "tuning_parameters.h"
+#ifdef FIXED_POINT
+#include "fixed/structs_FIX.h"
+#else
+#include "float/structs_FLP.h"
+#endif
+
+#define MAX_ENCODER_BUFFER 480
+
+#ifndef DISABLE_FLOAT_API
+#define PSEUDO_SNR_THRESHOLD 316.23f /* 10^(25/10) */
+#endif
+
+typedef struct {
+ opus_val32 XX, XY, YY;
+ opus_val16 smoothed_width;
+ opus_val16 max_follower;
+} StereoWidthState;
+
+struct OpusEncoder {
+ int celt_enc_offset;
+ int silk_enc_offset;
+ silk_EncControlStruct silk_mode;
+ int application;
+ int channels;
+ int delay_compensation;
+ int force_channels;
+ int signal_type;
+ int user_bandwidth;
+ int max_bandwidth;
+ int user_forced_mode;
+ int voice_ratio;
+ opus_int32 Fs;
+ int use_vbr;
+ int vbr_constraint;
+ int variable_duration;
+ opus_int32 bitrate_bps;
+ opus_int32 user_bitrate_bps;
+ int lsb_depth;
+ int encoder_buffer;
+ int lfe;
+ int arch;
+ int use_dtx; /* general DTX for both SILK and CELT */
+ int fec_config;
+#ifndef DISABLE_FLOAT_API
+ TonalityAnalysisState analysis;
+#endif
+
+#define OPUS_ENCODER_RESET_START stream_channels
+ int stream_channels;
+ opus_int16 hybrid_stereo_width_Q14;
+ opus_int32 variable_HP_smth2_Q15;
+ opus_val16 prev_HB_gain;
+ opus_val32 hp_mem[4];
+ int mode;
+ int prev_mode;
+ int prev_channels;
+ int prev_framesize;
+ int bandwidth;
+ /* Bandwidth determined automatically from the rate (before any other adjustment) */
+ int auto_bandwidth;
+ int silk_bw_switch;
+ /* Sampling rate (at the API level) */
+ int first;
+ opus_val16 * energy_masking;
+ StereoWidthState width_mem;
+ opus_val16 delay_buffer[MAX_ENCODER_BUFFER*2];
+#ifndef DISABLE_FLOAT_API
+ int detected_bandwidth;
+ int nb_no_activity_ms_Q1;
+ opus_val32 peak_signal_energy;
+#endif
+ int nonfinal_frame; /* current frame is not the final in a packet */
+ opus_uint32 rangeFinal;
+};
+
+/* Transition tables for the voice and music. First column is the
+ middle (memoriless) threshold. The second column is the hysteresis
+ (difference with the middle) */
+static const opus_int32 mono_voice_bandwidth_thresholds[8] = {
+ 9000, 700, /* NB<->MB */
+ 9000, 700, /* MB<->WB */
+ 13500, 1000, /* WB<->SWB */
+ 14000, 2000, /* SWB<->FB */
+};
+static const opus_int32 mono_music_bandwidth_thresholds[8] = {
+ 9000, 700, /* NB<->MB */
+ 9000, 700, /* MB<->WB */
+ 11000, 1000, /* WB<->SWB */
+ 12000, 2000, /* SWB<->FB */
+};
+static const opus_int32 stereo_voice_bandwidth_thresholds[8] = {
+ 9000, 700, /* NB<->MB */
+ 9000, 700, /* MB<->WB */
+ 13500, 1000, /* WB<->SWB */
+ 14000, 2000, /* SWB<->FB */
+};
+static const opus_int32 stereo_music_bandwidth_thresholds[8] = {
+ 9000, 700, /* NB<->MB */
+ 9000, 700, /* MB<->WB */
+ 11000, 1000, /* WB<->SWB */
+ 12000, 2000, /* SWB<->FB */
+};
+/* Threshold bit-rates for switching between mono and stereo */
+static const opus_int32 stereo_voice_threshold = 19000;
+static const opus_int32 stereo_music_threshold = 17000;
+
+/* Threshold bit-rate for switching between SILK/hybrid and CELT-only */
+static const opus_int32 mode_thresholds[2][2] = {
+ /* voice */ /* music */
+ { 64000, 10000}, /* mono */
+ { 44000, 10000}, /* stereo */
+};
+
+static const opus_int32 fec_thresholds[] = {
+ 12000, 1000, /* NB */
+ 14000, 1000, /* MB */
+ 16000, 1000, /* WB */
+ 20000, 1000, /* SWB */
+ 22000, 1000, /* FB */
+};
+
+int opus_encoder_get_size(int channels)
+{
+ int silkEncSizeBytes, celtEncSizeBytes;
+ int ret;
+ if (channels<1 || channels > 2)
+ return 0;
+ ret = silk_Get_Encoder_Size( &silkEncSizeBytes );
+ if (ret)
+ return 0;
+ silkEncSizeBytes = align(silkEncSizeBytes);
+ celtEncSizeBytes = celt_encoder_get_size(channels);
+ return align(sizeof(OpusEncoder))+silkEncSizeBytes+celtEncSizeBytes;
+}
+
+int opus_encoder_init(OpusEncoder* st, opus_int32 Fs, int channels, int application)
+{
+ void *silk_enc;
+ CELTEncoder *celt_enc;
+ int err;
+ int ret, silkEncSizeBytes;
+
+ if((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)||(channels!=1&&channels!=2)||
+ (application != OPUS_APPLICATION_VOIP && application != OPUS_APPLICATION_AUDIO
+ && application != OPUS_APPLICATION_RESTRICTED_LOWDELAY))
+ return OPUS_BAD_ARG;
+
+ OPUS_CLEAR((char*)st, opus_encoder_get_size(channels));
+ /* Create SILK encoder */
+ ret = silk_Get_Encoder_Size( &silkEncSizeBytes );
+ if (ret)
+ return OPUS_BAD_ARG;
+ silkEncSizeBytes = align(silkEncSizeBytes);
+ st->silk_enc_offset = align(sizeof(OpusEncoder));
+ st->celt_enc_offset = st->silk_enc_offset+silkEncSizeBytes;
+ silk_enc = (char*)st+st->silk_enc_offset;
+ celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
+
+ st->stream_channels = st->channels = channels;
+
+ st->Fs = Fs;
+
+ st->arch = opus_select_arch();
+
+ ret = silk_InitEncoder( silk_enc, st->arch, &st->silk_mode );
+ if(ret)return OPUS_INTERNAL_ERROR;
+
+ /* default SILK parameters */
+ st->silk_mode.nChannelsAPI = channels;
+ st->silk_mode.nChannelsInternal = channels;
+ st->silk_mode.API_sampleRate = st->Fs;
+ st->silk_mode.maxInternalSampleRate = 16000;
+ st->silk_mode.minInternalSampleRate = 8000;
+ st->silk_mode.desiredInternalSampleRate = 16000;
+ st->silk_mode.payloadSize_ms = 20;
+ st->silk_mode.bitRate = 25000;
+ st->silk_mode.packetLossPercentage = 0;
+ st->silk_mode.complexity = 9;
+ st->silk_mode.useInBandFEC = 0;
+ st->silk_mode.useDTX = 0;
+ st->silk_mode.useCBR = 0;
+ st->silk_mode.reducedDependency = 0;
+
+ /* Create CELT encoder */
+ /* Initialize CELT encoder */
+ err = celt_encoder_init(celt_enc, Fs, channels, st->arch);
+ if(err!=OPUS_OK)return OPUS_INTERNAL_ERROR;
+
+ celt_encoder_ctl(celt_enc, CELT_SET_SIGNALLING(0));
+ celt_encoder_ctl(celt_enc, OPUS_SET_COMPLEXITY(st->silk_mode.complexity));
+
+ st->use_vbr = 1;
+ /* Makes constrained VBR the default (safer for real-time use) */
+ st->vbr_constraint = 1;
+ st->user_bitrate_bps = OPUS_AUTO;
+ st->bitrate_bps = 3000+Fs*channels;
+ st->application = application;
+ st->signal_type = OPUS_AUTO;
+ st->user_bandwidth = OPUS_AUTO;
+ st->max_bandwidth = OPUS_BANDWIDTH_FULLBAND;
+ st->force_channels = OPUS_AUTO;
+ st->user_forced_mode = OPUS_AUTO;
+ st->voice_ratio = -1;
+ st->encoder_buffer = st->Fs/100;
+ st->lsb_depth = 24;
+ st->variable_duration = OPUS_FRAMESIZE_ARG;
+
+ /* Delay compensation of 4 ms (2.5 ms for SILK's extra look-ahead
+ + 1.5 ms for SILK resamplers and stereo prediction) */
+ st->delay_compensation = st->Fs/250;
+
+ st->hybrid_stereo_width_Q14 = 1 << 14;
+ st->prev_HB_gain = Q15ONE;
+ st->variable_HP_smth2_Q15 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
+ st->first = 1;
+ st->mode = MODE_HYBRID;
+ st->bandwidth = OPUS_BANDWIDTH_FULLBAND;
+
+#ifndef DISABLE_FLOAT_API
+ tonality_analysis_init(&st->analysis, st->Fs);
+ st->analysis.application = st->application;
+#endif
+
+ return OPUS_OK;
+}
+
+static unsigned char gen_toc(int mode, int framerate, int bandwidth, int channels)
+{
+ int period;
+ unsigned char toc;
+ period = 0;
+ while (framerate < 400)
+ {
+ framerate <<= 1;
+ period++;
+ }
+ if (mode == MODE_SILK_ONLY)
+ {
+ toc = (bandwidth-OPUS_BANDWIDTH_NARROWBAND)<<5;
+ toc |= (period-2)<<3;
+ } else if (mode == MODE_CELT_ONLY)
+ {
+ int tmp = bandwidth-OPUS_BANDWIDTH_MEDIUMBAND;
+ if (tmp < 0)
+ tmp = 0;
+ toc = 0x80;
+ toc |= tmp << 5;
+ toc |= period<<3;
+ } else /* Hybrid */
+ {
+ toc = 0x60;
+ toc |= (bandwidth-OPUS_BANDWIDTH_SUPERWIDEBAND)<<4;
+ toc |= (period-2)<<3;
+ }
+ toc |= (channels==2)<<2;
+ return toc;
+}
+
+#ifndef FIXED_POINT
+static void silk_biquad_float(
+ const opus_val16 *in, /* I: Input signal */
+ const opus_int32 *B_Q28, /* I: MA coefficients [3] */
+ const opus_int32 *A_Q28, /* I: AR coefficients [2] */
+ opus_val32 *S, /* I/O: State vector [2] */
+ opus_val16 *out, /* O: Output signal */
+ const opus_int32 len, /* I: Signal length (must be even) */
+ int stride
+)
+{
+ /* DIRECT FORM II TRANSPOSED (uses 2 element state vector) */
+ opus_int k;
+ opus_val32 vout;
+ opus_val32 inval;
+ opus_val32 A[2], B[3];
+
+ A[0] = (opus_val32)(A_Q28[0] * (1.f/((opus_int32)1<<28)));
+ A[1] = (opus_val32)(A_Q28[1] * (1.f/((opus_int32)1<<28)));
+ B[0] = (opus_val32)(B_Q28[0] * (1.f/((opus_int32)1<<28)));
+ B[1] = (opus_val32)(B_Q28[1] * (1.f/((opus_int32)1<<28)));
+ B[2] = (opus_val32)(B_Q28[2] * (1.f/((opus_int32)1<<28)));
+
+ /* Negate A_Q28 values and split in two parts */
+
+ for( k = 0; k < len; k++ ) {
+ /* S[ 0 ], S[ 1 ]: Q12 */
+ inval = in[ k*stride ];
+ vout = S[ 0 ] + B[0]*inval;
+
+ S[ 0 ] = S[1] - vout*A[0] + B[1]*inval;
+
+ S[ 1 ] = - vout*A[1] + B[2]*inval + VERY_SMALL;
+
+ /* Scale back to Q0 and saturate */
+ out[ k*stride ] = vout;
+ }
+}
+#endif
+
+static void hp_cutoff(const opus_val16 *in, opus_int32 cutoff_Hz, opus_val16 *out, opus_val32 *hp_mem, int len, int channels, opus_int32 Fs, int arch)
+{
+ opus_int32 B_Q28[ 3 ], A_Q28[ 2 ];
+ opus_int32 Fc_Q19, r_Q28, r_Q22;
+ (void)arch;
+
+ silk_assert( cutoff_Hz <= silk_int32_MAX / SILK_FIX_CONST( 1.5 * 3.14159 / 1000, 19 ) );
+ Fc_Q19 = silk_DIV32_16( silk_SMULBB( SILK_FIX_CONST( 1.5 * 3.14159 / 1000, 19 ), cutoff_Hz ), Fs/1000 );
+ silk_assert( Fc_Q19 > 0 && Fc_Q19 < 32768 );
+
+ r_Q28 = SILK_FIX_CONST( 1.0, 28 ) - silk_MUL( SILK_FIX_CONST( 0.92, 9 ), Fc_Q19 );
+
+ /* b = r * [ 1; -2; 1 ]; */
+ /* a = [ 1; -2 * r * ( 1 - 0.5 * Fc^2 ); r^2 ]; */
+ B_Q28[ 0 ] = r_Q28;
+ B_Q28[ 1 ] = silk_LSHIFT( -r_Q28, 1 );
+ B_Q28[ 2 ] = r_Q28;
+
+ /* -r * ( 2 - Fc * Fc ); */
+ r_Q22 = silk_RSHIFT( r_Q28, 6 );
+ A_Q28[ 0 ] = silk_SMULWW( r_Q22, silk_SMULWW( Fc_Q19, Fc_Q19 ) - SILK_FIX_CONST( 2.0, 22 ) );
+ A_Q28[ 1 ] = silk_SMULWW( r_Q22, r_Q22 );
+
+#ifdef FIXED_POINT
+ if( channels == 1 ) {
+ silk_biquad_alt_stride1( in, B_Q28, A_Q28, hp_mem, out, len );
+ } else {
+ silk_biquad_alt_stride2( in, B_Q28, A_Q28, hp_mem, out, len, arch );
+ }
+#else
+ silk_biquad_float( in, B_Q28, A_Q28, hp_mem, out, len, channels );
+ if( channels == 2 ) {
+ silk_biquad_float( in+1, B_Q28, A_Q28, hp_mem+2, out+1, len, channels );
+ }
+#endif
+}
+
+#ifdef FIXED_POINT
+static void dc_reject(const opus_val16 *in, opus_int32 cutoff_Hz, opus_val16 *out, opus_val32 *hp_mem, int len, int channels, opus_int32 Fs)
+{
+ int c, i;
+ int shift;
+
+ /* Approximates -round(log2(6.3*cutoff_Hz/Fs)) */
+ shift=celt_ilog2(Fs/(cutoff_Hz*4));
+ for (c=0;c<channels;c++)
+ {
+ for (i=0;i<len;i++)
+ {
+ opus_val32 x, y;
+ x = SHL32(EXTEND32(in[channels*i+c]), 14);
+ y = x-hp_mem[2*c];
+ hp_mem[2*c] = hp_mem[2*c] + PSHR32(x - hp_mem[2*c], shift);
+ out[channels*i+c] = EXTRACT16(SATURATE(PSHR32(y, 14), 32767));
+ }
+ }
+}
+
+#else
+static void dc_reject(const opus_val16 *in, opus_int32 cutoff_Hz, opus_val16 *out, opus_val32 *hp_mem, int len, int channels, opus_int32 Fs)
+{
+ int i;
+ float coef, coef2;
+ coef = 6.3f*cutoff_Hz/Fs;
+ coef2 = 1-coef;
+ if (channels==2)
+ {
+ float m0, m2;
+ m0 = hp_mem[0];
+ m2 = hp_mem[2];
+ for (i=0;i<len;i++)
+ {
+ opus_val32 x0, x1, out0, out1;
+ x0 = in[2*i+0];
+ x1 = in[2*i+1];
+ out0 = x0-m0;
+ out1 = x1-m2;
+ m0 = coef*x0 + VERY_SMALL + coef2*m0;
+ m2 = coef*x1 + VERY_SMALL + coef2*m2;
+ out[2*i+0] = out0;
+ out[2*i+1] = out1;
+ }
+ hp_mem[0] = m0;
+ hp_mem[2] = m2;
+ } else {
+ float m0;
+ m0 = hp_mem[0];
+ for (i=0;i<len;i++)
+ {
+ opus_val32 x, y;
+ x = in[i];
+ y = x-m0;
+ m0 = coef*x + VERY_SMALL + coef2*m0;
+ out[i] = y;
+ }
+ hp_mem[0] = m0;
+ }
+}
+#endif
+
+static void stereo_fade(const opus_val16 *in, opus_val16 *out, opus_val16 g1, opus_val16 g2,
+ int overlap48, int frame_size, int channels, const opus_val16 *window, opus_int32 Fs)
+{
+ int i;
+ int overlap;
+ int inc;
+ inc = 48000/Fs;
+ overlap=overlap48/inc;
+ g1 = Q15ONE-g1;
+ g2 = Q15ONE-g2;
+ for (i=0;i<overlap;i++)
+ {
+ opus_val32 diff;
+ opus_val16 g, w;
+ w = MULT16_16_Q15(window[i*inc], window[i*inc]);
+ g = SHR32(MAC16_16(MULT16_16(w,g2),
+ Q15ONE-w, g1), 15);
+ diff = EXTRACT16(HALF32((opus_val32)in[i*channels] - (opus_val32)in[i*channels+1]));
+ diff = MULT16_16_Q15(g, diff);
+ out[i*channels] = out[i*channels] - diff;
+ out[i*channels+1] = out[i*channels+1] + diff;
+ }
+ for (;i<frame_size;i++)
+ {
+ opus_val32 diff;
+ diff = EXTRACT16(HALF32((opus_val32)in[i*channels] - (opus_val32)in[i*channels+1]));
+ diff = MULT16_16_Q15(g2, diff);
+ out[i*channels] = out[i*channels] - diff;
+ out[i*channels+1] = out[i*channels+1] + diff;
+ }
+}
+
+static void gain_fade(const opus_val16 *in, opus_val16 *out, opus_val16 g1, opus_val16 g2,
+ int overlap48, int frame_size, int channels, const opus_val16 *window, opus_int32 Fs)
+{
+ int i;
+ int inc;
+ int overlap;
+ int c;
+ inc = 48000/Fs;
+ overlap=overlap48/inc;
+ if (channels==1)
+ {
+ for (i=0;i<overlap;i++)
+ {
+ opus_val16 g, w;
+ w = MULT16_16_Q15(window[i*inc], window[i*inc]);
+ g = SHR32(MAC16_16(MULT16_16(w,g2),
+ Q15ONE-w, g1), 15);
+ out[i] = MULT16_16_Q15(g, in[i]);
+ }
+ } else {
+ for (i=0;i<overlap;i++)
+ {
+ opus_val16 g, w;
+ w = MULT16_16_Q15(window[i*inc], window[i*inc]);
+ g = SHR32(MAC16_16(MULT16_16(w,g2),
+ Q15ONE-w, g1), 15);
+ out[i*2] = MULT16_16_Q15(g, in[i*2]);
+ out[i*2+1] = MULT16_16_Q15(g, in[i*2+1]);
+ }
+ }
+ c=0;do {
+ for (i=overlap;i<frame_size;i++)
+ {
+ out[i*channels+c] = MULT16_16_Q15(g2, in[i*channels+c]);
+ }
+ }
+ while (++c<channels);
+}
+
+OpusEncoder *opus_encoder_create(opus_int32 Fs, int channels, int application, int *error)
+{
+ int ret;
+ OpusEncoder *st;
+ if((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)||(channels!=1&&channels!=2)||
+ (application != OPUS_APPLICATION_VOIP && application != OPUS_APPLICATION_AUDIO
+ && application != OPUS_APPLICATION_RESTRICTED_LOWDELAY))
+ {
+ if (error)
+ *error = OPUS_BAD_ARG;
+ return NULL;
+ }
+ st = (OpusEncoder *)opus_alloc(opus_encoder_get_size(channels));
+ if (st == NULL)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ ret = opus_encoder_init(st, Fs, channels, application);
+ if (error)
+ *error = ret;
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ return st;
+}
+
+static opus_int32 user_bitrate_to_bitrate(OpusEncoder *st, int frame_size, int max_data_bytes)
+{
+ if(!frame_size)frame_size=st->Fs/400;
+ if (st->user_bitrate_bps==OPUS_AUTO)
+ return 60*st->Fs/frame_size + st->Fs*st->channels;
+ else if (st->user_bitrate_bps==OPUS_BITRATE_MAX)
+ return max_data_bytes*8*st->Fs/frame_size;
+ else
+ return st->user_bitrate_bps;
+}
+
+#ifndef DISABLE_FLOAT_API
+#ifdef FIXED_POINT
+#define PCM2VAL(x) FLOAT2INT16(x)
+#else
+#define PCM2VAL(x) SCALEIN(x)
+#endif
+
+void downmix_float(const void *_x, opus_val32 *y, int subframe, int offset, int c1, int c2, int C)
+{
+ const float *x;
+ int j;
+
+ x = (const float *)_x;
+ for (j=0;j<subframe;j++)
+ y[j] = PCM2VAL(x[(j+offset)*C+c1]);
+ if (c2>-1)
+ {
+ for (j=0;j<subframe;j++)
+ y[j] += PCM2VAL(x[(j+offset)*C+c2]);
+ } else if (c2==-2)
+ {
+ int c;
+ for (c=1;c<C;c++)
+ {
+ for (j=0;j<subframe;j++)
+ y[j] += PCM2VAL(x[(j+offset)*C+c]);
+ }
+ }
+}
+#endif
+
+void downmix_int(const void *_x, opus_val32 *y, int subframe, int offset, int c1, int c2, int C)
+{
+ const opus_int16 *x;
+ int j;
+
+ x = (const opus_int16 *)_x;
+ for (j=0;j<subframe;j++)
+ y[j] = x[(j+offset)*C+c1];
+ if (c2>-1)
+ {
+ for (j=0;j<subframe;j++)
+ y[j] += x[(j+offset)*C+c2];
+ } else if (c2==-2)
+ {
+ int c;
+ for (c=1;c<C;c++)
+ {
+ for (j=0;j<subframe;j++)
+ y[j] += x[(j+offset)*C+c];
+ }
+ }
+}
+
+opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs)
+{
+ int new_size;
+ if (frame_size<Fs/400)
+ return -1;
+ if (variable_duration == OPUS_FRAMESIZE_ARG)
+ new_size = frame_size;
+ else if (variable_duration >= OPUS_FRAMESIZE_2_5_MS && variable_duration <= OPUS_FRAMESIZE_120_MS)
+ {
+ if (variable_duration <= OPUS_FRAMESIZE_40_MS)
+ new_size = (Fs/400)<<(variable_duration-OPUS_FRAMESIZE_2_5_MS);
+ else
+ new_size = (variable_duration-OPUS_FRAMESIZE_2_5_MS-2)*Fs/50;
+ }
+ else
+ return -1;
+ if (new_size>frame_size)
+ return -1;
+ if (400*new_size!=Fs && 200*new_size!=Fs && 100*new_size!=Fs &&
+ 50*new_size!=Fs && 25*new_size!=Fs && 50*new_size!=3*Fs &&
+ 50*new_size!=4*Fs && 50*new_size!=5*Fs && 50*new_size!=6*Fs)
+ return -1;
+ return new_size;
+}
+
+opus_val16 compute_stereo_width(const opus_val16 *pcm, int frame_size, opus_int32 Fs, StereoWidthState *mem)
+{
+ opus_val32 xx, xy, yy;
+ opus_val16 sqrt_xx, sqrt_yy;
+ opus_val16 qrrt_xx, qrrt_yy;
+ int frame_rate;
+ int i;
+ opus_val16 short_alpha;
+
+ frame_rate = Fs/frame_size;
+ short_alpha = Q15ONE - MULT16_16(25, Q15ONE)/IMAX(50,frame_rate);
+ xx=xy=yy=0;
+ /* Unroll by 4. The frame size is always a multiple of 4 *except* for
+ 2.5 ms frames at 12 kHz. Since this setting is very rare (and very
+ stupid), we just discard the last two samples. */
+ for (i=0;i<frame_size-3;i+=4)
+ {
+ opus_val32 pxx=0;
+ opus_val32 pxy=0;
+ opus_val32 pyy=0;
+ opus_val16 x, y;
+ x = pcm[2*i];
+ y = pcm[2*i+1];
+ pxx = SHR32(MULT16_16(x,x),2);
+ pxy = SHR32(MULT16_16(x,y),2);
+ pyy = SHR32(MULT16_16(y,y),2);
+ x = pcm[2*i+2];
+ y = pcm[2*i+3];
+ pxx += SHR32(MULT16_16(x,x),2);
+ pxy += SHR32(MULT16_16(x,y),2);
+ pyy += SHR32(MULT16_16(y,y),2);
+ x = pcm[2*i+4];
+ y = pcm[2*i+5];
+ pxx += SHR32(MULT16_16(x,x),2);
+ pxy += SHR32(MULT16_16(x,y),2);
+ pyy += SHR32(MULT16_16(y,y),2);
+ x = pcm[2*i+6];
+ y = pcm[2*i+7];
+ pxx += SHR32(MULT16_16(x,x),2);
+ pxy += SHR32(MULT16_16(x,y),2);
+ pyy += SHR32(MULT16_16(y,y),2);
+
+ xx += SHR32(pxx, 10);
+ xy += SHR32(pxy, 10);
+ yy += SHR32(pyy, 10);
+ }
+#ifndef FIXED_POINT
+ if (!(xx < 1e9f) || celt_isnan(xx) || !(yy < 1e9f) || celt_isnan(yy))
+ {
+ xy = xx = yy = 0;
+ }
+#endif
+ mem->XX += MULT16_32_Q15(short_alpha, xx-mem->XX);
+ mem->XY += MULT16_32_Q15(short_alpha, xy-mem->XY);
+ mem->YY += MULT16_32_Q15(short_alpha, yy-mem->YY);
+ mem->XX = MAX32(0, mem->XX);
+ mem->XY = MAX32(0, mem->XY);
+ mem->YY = MAX32(0, mem->YY);
+ if (MAX32(mem->XX, mem->YY)>QCONST16(8e-4f, 18))
+ {
+ opus_val16 corr;
+ opus_val16 ldiff;
+ opus_val16 width;
+ sqrt_xx = celt_sqrt(mem->XX);
+ sqrt_yy = celt_sqrt(mem->YY);
+ qrrt_xx = celt_sqrt(sqrt_xx);
+ qrrt_yy = celt_sqrt(sqrt_yy);
+ /* Inter-channel correlation */
+ mem->XY = MIN32(mem->XY, sqrt_xx*sqrt_yy);
+ corr = SHR32(frac_div32(mem->XY,EPSILON+MULT16_16(sqrt_xx,sqrt_yy)),16);
+ /* Approximate loudness difference */
+ ldiff = MULT16_16(Q15ONE, ABS16(qrrt_xx-qrrt_yy))/(EPSILON+qrrt_xx+qrrt_yy);
+ width = MULT16_16_Q15(celt_sqrt(QCONST32(1.f,30)-MULT16_16(corr,corr)), ldiff);
+ /* Smoothing over one second */
+ mem->smoothed_width += (width-mem->smoothed_width)/frame_rate;
+ /* Peak follower */
+ mem->max_follower = MAX16(mem->max_follower-QCONST16(.02f,15)/frame_rate, mem->smoothed_width);
+ }
+ /*printf("%f %f %f %f %f ", corr/(float)Q15ONE, ldiff/(float)Q15ONE, width/(float)Q15ONE, mem->smoothed_width/(float)Q15ONE, mem->max_follower/(float)Q15ONE);*/
+ return EXTRACT16(MIN32(Q15ONE, MULT16_16(20, mem->max_follower)));
+}
+
+static int decide_fec(int useInBandFEC, int PacketLoss_perc, int last_fec, int mode, int *bandwidth, opus_int32 rate)
+{
+ int orig_bandwidth;
+ if (!useInBandFEC || PacketLoss_perc == 0 || mode == MODE_CELT_ONLY)
+ return 0;
+ orig_bandwidth = *bandwidth;
+ for (;;)
+ {
+ opus_int32 hysteresis;
+ opus_int32 LBRR_rate_thres_bps;
+ /* Compute threshold for using FEC at the current bandwidth setting */
+ LBRR_rate_thres_bps = fec_thresholds[2*(*bandwidth - OPUS_BANDWIDTH_NARROWBAND)];
+ hysteresis = fec_thresholds[2*(*bandwidth - OPUS_BANDWIDTH_NARROWBAND) + 1];
+ if (last_fec == 1) LBRR_rate_thres_bps -= hysteresis;
+ if (last_fec == 0) LBRR_rate_thres_bps += hysteresis;
+ LBRR_rate_thres_bps = silk_SMULWB( silk_MUL( LBRR_rate_thres_bps,
+ 125 - silk_min( PacketLoss_perc, 25 ) ), SILK_FIX_CONST( 0.01, 16 ) );
+ /* If loss <= 5%, we look at whether we have enough rate to enable FEC.
+ If loss > 5%, we decrease the bandwidth until we can enable FEC. */
+ if (rate > LBRR_rate_thres_bps)
+ return 1;
+ else if (PacketLoss_perc <= 5)
+ return 0;
+ else if (*bandwidth > OPUS_BANDWIDTH_NARROWBAND)
+ (*bandwidth)--;
+ else
+ break;
+ }
+ /* Couldn't find any bandwidth to enable FEC, keep original bandwidth. */
+ *bandwidth = orig_bandwidth;
+ return 0;
+}
+
+static int compute_silk_rate_for_hybrid(int rate, int bandwidth, int frame20ms, int vbr, int fec, int channels) {
+ int entry;
+ int i;
+ int N;
+ int silk_rate;
+ static int rate_table[][5] = {
+ /* |total| |-------- SILK------------|
+ |-- No FEC -| |--- FEC ---|
+ 10ms 20ms 10ms 20ms */
+ { 0, 0, 0, 0, 0},
+ {12000, 10000, 10000, 11000, 11000},
+ {16000, 13500, 13500, 15000, 15000},
+ {20000, 16000, 16000, 18000, 18000},
+ {24000, 18000, 18000, 21000, 21000},
+ {32000, 22000, 22000, 28000, 28000},
+ {64000, 38000, 38000, 50000, 50000}
+ };
+ /* Do the allocation per-channel. */
+ rate /= channels;
+ entry = 1 + frame20ms + 2*fec;
+ N = sizeof(rate_table)/sizeof(rate_table[0]);
+ for (i=1;i<N;i++)
+ {
+ if (rate_table[i][0] > rate) break;
+ }
+ if (i == N)
+ {
+ silk_rate = rate_table[i-1][entry];
+ /* For now, just give 50% of the extra bits to SILK. */
+ silk_rate += (rate-rate_table[i-1][0])/2;
+ } else {
+ opus_int32 lo, hi, x0, x1;
+ lo = rate_table[i-1][entry];
+ hi = rate_table[i][entry];
+ x0 = rate_table[i-1][0];
+ x1 = rate_table[i][0];
+ silk_rate = (lo*(x1-rate) + hi*(rate-x0))/(x1-x0);
+ }
+ if (!vbr)
+ {
+ /* Tiny boost to SILK for CBR. We should probably tune this better. */
+ silk_rate += 100;
+ }
+ if (bandwidth==OPUS_BANDWIDTH_SUPERWIDEBAND)
+ silk_rate += 300;
+ silk_rate *= channels;
+ /* Small adjustment for stereo (calibrated for 32 kb/s, haven't tried other bitrates). */
+ if (channels == 2 && rate >= 12000)
+ silk_rate -= 1000;
+ return silk_rate;
+}
+
+/* Returns the equivalent bitrate corresponding to 20 ms frames,
+ complexity 10 VBR operation. */
+static opus_int32 compute_equiv_rate(opus_int32 bitrate, int channels,
+ int frame_rate, int vbr, int mode, int complexity, int loss)
+{
+ opus_int32 equiv;
+ equiv = bitrate;
+ /* Take into account overhead from smaller frames. */
+ if (frame_rate > 50)
+ equiv -= (40*channels+20)*(frame_rate - 50);
+ /* CBR is about a 8% penalty for both SILK and CELT. */
+ if (!vbr)
+ equiv -= equiv/12;
+ /* Complexity makes about 10% difference (from 0 to 10) in general. */
+ equiv = equiv * (90+complexity)/100;
+ if (mode == MODE_SILK_ONLY || mode == MODE_HYBRID)
+ {
+ /* SILK complexity 0-1 uses the non-delayed-decision NSQ, which
+ costs about 20%. */
+ if (complexity<2)
+ equiv = equiv*4/5;
+ equiv -= equiv*loss/(6*loss + 10);
+ } else if (mode == MODE_CELT_ONLY) {
+ /* CELT complexity 0-4 doesn't have the pitch filter, which costs
+ about 10%. */
+ if (complexity<5)
+ equiv = equiv*9/10;
+ } else {
+ /* Mode not known yet */
+ /* Half the SILK loss*/
+ equiv -= equiv*loss/(12*loss + 20);
+ }
+ return equiv;
+}
+
+#ifndef DISABLE_FLOAT_API
+
+int is_digital_silence(const opus_val16* pcm, int frame_size, int channels, int lsb_depth)
+{
+ int silence = 0;
+ opus_val32 sample_max = 0;
+#ifdef MLP_TRAINING
+ return 0;
+#endif
+ sample_max = celt_maxabs16(pcm, frame_size*channels);
+
+#ifdef FIXED_POINT
+ silence = (sample_max == 0);
+ (void)lsb_depth;
+#else
+ silence = (sample_max <= (opus_val16) 1 / (1 << lsb_depth));
+#endif
+
+ return silence;
+}
+
+#ifdef FIXED_POINT
+static opus_val32 compute_frame_energy(const opus_val16 *pcm, int frame_size, int channels, int arch)
+{
+ int i;
+ opus_val32 sample_max;
+ int max_shift;
+ int shift;
+ opus_val32 energy = 0;
+ int len = frame_size*channels;
+ (void)arch;
+ /* Max amplitude in the signal */
+ sample_max = celt_maxabs16(pcm, len);
+
+ /* Compute the right shift required in the MAC to avoid an overflow */
+ max_shift = celt_ilog2(len);
+ shift = IMAX(0, (celt_ilog2(sample_max) << 1) + max_shift - 28);
+
+ /* Compute the energy */
+ for (i=0; i<len; i++)
+ energy += SHR32(MULT16_16(pcm[i], pcm[i]), shift);
+
+ /* Normalize energy by the frame size and left-shift back to the original position */
+ energy /= len;
+ energy = SHL32(energy, shift);
+
+ return energy;
+}
+#else
+static opus_val32 compute_frame_energy(const opus_val16 *pcm, int frame_size, int channels, int arch)
+{
+ int len = frame_size*channels;
+ return celt_inner_prod(pcm, pcm, len, arch)/len;
+}
+#endif
+
+/* Decides if DTX should be turned on (=1) or off (=0) */
+static int decide_dtx_mode(opus_int activity, /* indicates if this frame contains speech/music */
+ int *nb_no_activity_ms_Q1, /* number of consecutive milliseconds with no activity, in Q1 */
+ int frame_size_ms_Q1 /* number of miliseconds in this update, in Q1 */
+ )
+
+{
+ if (!activity)
+ {
+ /* The number of consecutive DTX frames should be within the allowed bounds.
+ Note that the allowed bound is defined in the SILK headers and assumes 20 ms
+ frames. As this function can be called with any frame length, a conversion to
+ milliseconds is done before the comparisons. */
+ (*nb_no_activity_ms_Q1) += frame_size_ms_Q1;
+ if (*nb_no_activity_ms_Q1 > NB_SPEECH_FRAMES_BEFORE_DTX*20*2)
+ {
+ if (*nb_no_activity_ms_Q1 <= (NB_SPEECH_FRAMES_BEFORE_DTX + MAX_CONSECUTIVE_DTX)*20*2)
+ /* Valid frame for DTX! */
+ return 1;
+ else
+ (*nb_no_activity_ms_Q1) = NB_SPEECH_FRAMES_BEFORE_DTX*20*2;
+ }
+ } else
+ (*nb_no_activity_ms_Q1) = 0;
+
+ return 0;
+}
+
+#endif
+
+static opus_int32 encode_multiframe_packet(OpusEncoder *st,
+ const opus_val16 *pcm,
+ int nb_frames,
+ int frame_size,
+ unsigned char *data,
+ opus_int32 out_data_bytes,
+ int to_celt,
+ int lsb_depth,
+ int float_api)
+{
+ int i;
+ int ret = 0;
+ VARDECL(unsigned char, tmp_data);
+ int bak_mode, bak_bandwidth, bak_channels, bak_to_mono;
+ VARDECL(OpusRepacketizer, rp);
+ int max_header_bytes;
+ opus_int32 bytes_per_frame;
+ opus_int32 cbr_bytes;
+ opus_int32 repacketize_len;
+ int tmp_len;
+ ALLOC_STACK;
+
+ /* Worst cases:
+ * 2 frames: Code 2 with different compressed sizes
+ * >2 frames: Code 3 VBR */
+ max_header_bytes = nb_frames == 2 ? 3 : (2+(nb_frames-1)*2);
+
+ if (st->use_vbr || st->user_bitrate_bps==OPUS_BITRATE_MAX)
+ repacketize_len = out_data_bytes;
+ else {
+ cbr_bytes = 3*st->bitrate_bps/(3*8*st->Fs/(frame_size*nb_frames));
+ repacketize_len = IMIN(cbr_bytes, out_data_bytes);
+ }
+ bytes_per_frame = IMIN(1276, 1+(repacketize_len-max_header_bytes)/nb_frames);
+
+ ALLOC(tmp_data, nb_frames*bytes_per_frame, unsigned char);
+ ALLOC(rp, 1, OpusRepacketizer);
+ opus_repacketizer_init(rp);
+
+ bak_mode = st->user_forced_mode;
+ bak_bandwidth = st->user_bandwidth;
+ bak_channels = st->force_channels;
+
+ st->user_forced_mode = st->mode;
+ st->user_bandwidth = st->bandwidth;
+ st->force_channels = st->stream_channels;
+
+ bak_to_mono = st->silk_mode.toMono;
+ if (bak_to_mono)
+ st->force_channels = 1;
+ else
+ st->prev_channels = st->stream_channels;
+
+ for (i=0;i<nb_frames;i++)
+ {
+ st->silk_mode.toMono = 0;
+ st->nonfinal_frame = i<(nb_frames-1);
+
+ /* When switching from SILK/Hybrid to CELT, only ask for a switch at the last frame */
+ if (to_celt && i==nb_frames-1)
+ st->user_forced_mode = MODE_CELT_ONLY;
+
+ tmp_len = opus_encode_native(st, pcm+i*(st->channels*frame_size), frame_size,
+ tmp_data+i*bytes_per_frame, bytes_per_frame, lsb_depth, NULL, 0, 0, 0, 0,
+ NULL, float_api);
+
+ if (tmp_len<0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+
+ ret = opus_repacketizer_cat(rp, tmp_data+i*bytes_per_frame, tmp_len);
+
+ if (ret<0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ }
+
+ ret = opus_repacketizer_out_range_impl(rp, 0, nb_frames, data, repacketize_len, 0, !st->use_vbr);
+
+ if (ret<0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+
+ /* Discard configs that were forced locally for the purpose of repacketization */
+ st->user_forced_mode = bak_mode;
+ st->user_bandwidth = bak_bandwidth;
+ st->force_channels = bak_channels;
+ st->silk_mode.toMono = bak_to_mono;
+
+ RESTORE_STACK;
+ return ret;
+}
+
+static int compute_redundancy_bytes(opus_int32 max_data_bytes, opus_int32 bitrate_bps, int frame_rate, int channels)
+{
+ int redundancy_bytes_cap;
+ int redundancy_bytes;
+ opus_int32 redundancy_rate;
+ int base_bits;
+ opus_int32 available_bits;
+ base_bits = (40*channels+20);
+
+ /* Equivalent rate for 5 ms frames. */
+ redundancy_rate = bitrate_bps + base_bits*(200 - frame_rate);
+ /* For VBR, further increase the bitrate if we can afford it. It's pretty short
+ and we'll avoid artefacts. */
+ redundancy_rate = 3*redundancy_rate/2;
+ redundancy_bytes = redundancy_rate/1600;
+
+ /* Compute the max rate we can use given CBR or VBR with cap. */
+ available_bits = max_data_bytes*8 - 2*base_bits;
+ redundancy_bytes_cap = (available_bits*240/(240+48000/frame_rate) + base_bits)/8;
+ redundancy_bytes = IMIN(redundancy_bytes, redundancy_bytes_cap);
+ /* It we can't get enough bits for redundancy to be worth it, rely on the decoder PLC. */
+ if (redundancy_bytes > 4 + 8*channels)
+ redundancy_bytes = IMIN(257, redundancy_bytes);
+ else
+ redundancy_bytes = 0;
+ return redundancy_bytes;
+}
+
+opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
+ unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
+ const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2,
+ int analysis_channels, downmix_func downmix, int float_api)
+{
+ void *silk_enc;
+ CELTEncoder *celt_enc;
+ int i;
+ int ret=0;
+ opus_int32 nBytes;
+ ec_enc enc;
+ int bytes_target;
+ int prefill=0;
+ int start_band = 0;
+ int redundancy = 0;
+ int redundancy_bytes = 0; /* Number of bytes to use for redundancy frame */
+ int celt_to_silk = 0;
+ VARDECL(opus_val16, pcm_buf);
+ int nb_compr_bytes;
+ int to_celt = 0;
+ opus_uint32 redundant_rng = 0;
+ int cutoff_Hz, hp_freq_smth1;
+ int voice_est; /* Probability of voice in Q7 */
+ opus_int32 equiv_rate;
+ int delay_compensation;
+ int frame_rate;
+ opus_int32 max_rate; /* Max bitrate we're allowed to use */
+ int curr_bandwidth;
+ opus_val16 HB_gain;
+ opus_int32 max_data_bytes; /* Max number of bytes we're allowed to use */
+ int total_buffer;
+ opus_val16 stereo_width;
+ const CELTMode *celt_mode;
+#ifndef DISABLE_FLOAT_API
+ AnalysisInfo analysis_info;
+ int analysis_read_pos_bak=-1;
+ int analysis_read_subframe_bak=-1;
+ int is_silence = 0;
+#endif
+ opus_int activity = VAD_NO_DECISION;
+
+ VARDECL(opus_val16, tmp_prefill);
+
+ ALLOC_STACK;
+
+ max_data_bytes = IMIN(1276, out_data_bytes);
+
+ st->rangeFinal = 0;
+ if (frame_size <= 0 || max_data_bytes <= 0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+
+ /* Cannot encode 100 ms in 1 byte */
+ if (max_data_bytes==1 && st->Fs==(frame_size*10))
+ {
+ RESTORE_STACK;
+ return OPUS_BUFFER_TOO_SMALL;
+ }
+
+ silk_enc = (char*)st+st->silk_enc_offset;
+ celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
+ if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
+ delay_compensation = 0;
+ else
+ delay_compensation = st->delay_compensation;
+
+ lsb_depth = IMIN(lsb_depth, st->lsb_depth);
+
+ celt_encoder_ctl(celt_enc, CELT_GET_MODE(&celt_mode));
+#ifndef DISABLE_FLOAT_API
+ analysis_info.valid = 0;
+#ifdef FIXED_POINT
+ if (st->silk_mode.complexity >= 10 && st->Fs>=16000)
+#else
+ if (st->silk_mode.complexity >= 7 && st->Fs>=16000)
+#endif
+ {
+ is_silence = is_digital_silence(pcm, frame_size, st->channels, lsb_depth);
+ analysis_read_pos_bak = st->analysis.read_pos;
+ analysis_read_subframe_bak = st->analysis.read_subframe;
+ run_analysis(&st->analysis, celt_mode, analysis_pcm, analysis_size, frame_size,
+ c1, c2, analysis_channels, st->Fs,
+ lsb_depth, downmix, &analysis_info);
+
+ /* Track the peak signal energy */
+ if (!is_silence && analysis_info.activity_probability > DTX_ACTIVITY_THRESHOLD)
+ st->peak_signal_energy = MAX32(MULT16_32_Q15(QCONST16(0.999f, 15), st->peak_signal_energy),
+ compute_frame_energy(pcm, frame_size, st->channels, st->arch));
+ } else if (st->analysis.initialized) {
+ tonality_analysis_reset(&st->analysis);
+ }
+#else
+ (void)analysis_pcm;
+ (void)analysis_size;
+ (void)c1;
+ (void)c2;
+ (void)analysis_channels;
+ (void)downmix;
+#endif
+
+#ifndef DISABLE_FLOAT_API
+ /* Reset voice_ratio if this frame is not silent or if analysis is disabled.
+ * Otherwise, preserve voice_ratio from the last non-silent frame */
+ if (!is_silence)
+ st->voice_ratio = -1;
+
+ if (is_silence)
+ {
+ activity = !is_silence;
+ } else if (analysis_info.valid)
+ {
+ activity = analysis_info.activity_probability >= DTX_ACTIVITY_THRESHOLD;
+ if (!activity)
+ {
+ /* Mark as active if this noise frame is sufficiently loud */
+ opus_val32 noise_energy = compute_frame_energy(pcm, frame_size, st->channels, st->arch);
+ activity = st->peak_signal_energy < (PSEUDO_SNR_THRESHOLD * noise_energy);
+ }
+ }
+
+ st->detected_bandwidth = 0;
+ if (analysis_info.valid)
+ {
+ int analysis_bandwidth;
+ if (st->signal_type == OPUS_AUTO)
+ {
+ float prob;
+ if (st->prev_mode == 0)
+ prob = analysis_info.music_prob;
+ else if (st->prev_mode == MODE_CELT_ONLY)
+ prob = analysis_info.music_prob_max;
+ else
+ prob = analysis_info.music_prob_min;
+ st->voice_ratio = (int)floor(.5+100*(1-prob));
+ }
+
+ analysis_bandwidth = analysis_info.bandwidth;
+ if (analysis_bandwidth<=12)
+ st->detected_bandwidth = OPUS_BANDWIDTH_NARROWBAND;
+ else if (analysis_bandwidth<=14)
+ st->detected_bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
+ else if (analysis_bandwidth<=16)
+ st->detected_bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ else if (analysis_bandwidth<=18)
+ st->detected_bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
+ else
+ st->detected_bandwidth = OPUS_BANDWIDTH_FULLBAND;
+ }
+#else
+ st->voice_ratio = -1;
+#endif
+
+ if (st->channels==2 && st->force_channels!=1)
+ stereo_width = compute_stereo_width(pcm, frame_size, st->Fs, &st->width_mem);
+ else
+ stereo_width = 0;
+ total_buffer = delay_compensation;
+ st->bitrate_bps = user_bitrate_to_bitrate(st, frame_size, max_data_bytes);
+
+ frame_rate = st->Fs/frame_size;
+ if (!st->use_vbr)
+ {
+ int cbrBytes;
+ /* Multiply by 12 to make sure the division is exact. */
+ int frame_rate12 = 12*st->Fs/frame_size;
+ /* We need to make sure that "int" values always fit in 16 bits. */
+ cbrBytes = IMIN( (12*st->bitrate_bps/8 + frame_rate12/2)/frame_rate12, max_data_bytes);
+ st->bitrate_bps = cbrBytes*(opus_int32)frame_rate12*8/12;
+ /* Make sure we provide at least one byte to avoid failing. */
+ max_data_bytes = IMAX(1, cbrBytes);
+ }
+ if (max_data_bytes<3 || st->bitrate_bps < 3*frame_rate*8
+ || (frame_rate<50 && (max_data_bytes*frame_rate<300 || st->bitrate_bps < 2400)))
+ {
+ /*If the space is too low to do something useful, emit 'PLC' frames.*/
+ int tocmode = st->mode;
+ int bw = st->bandwidth == 0 ? OPUS_BANDWIDTH_NARROWBAND : st->bandwidth;
+ int packet_code = 0;
+ int num_multiframes = 0;
+
+ if (tocmode==0)
+ tocmode = MODE_SILK_ONLY;
+ if (frame_rate>100)
+ tocmode = MODE_CELT_ONLY;
+ /* 40 ms -> 2 x 20 ms if in CELT_ONLY or HYBRID mode */
+ if (frame_rate==25 && tocmode!=MODE_SILK_ONLY)
+ {
+ frame_rate = 50;
+ packet_code = 1;
+ }
+
+ /* >= 60 ms frames */
+ if (frame_rate<=16)
+ {
+ /* 1 x 60 ms, 2 x 40 ms, 2 x 60 ms */
+ if (out_data_bytes==1 || (tocmode==MODE_SILK_ONLY && frame_rate!=10))
+ {
+ tocmode = MODE_SILK_ONLY;
+
+ packet_code = frame_rate <= 12;
+ frame_rate = frame_rate == 12 ? 25 : 16;
+ }
+ else
+ {
+ num_multiframes = 50/frame_rate;
+ frame_rate = 50;
+ packet_code = 3;
+ }
+ }
+
+ if(tocmode==MODE_SILK_ONLY&&bw>OPUS_BANDWIDTH_WIDEBAND)
+ bw=OPUS_BANDWIDTH_WIDEBAND;
+ else if (tocmode==MODE_CELT_ONLY&&bw==OPUS_BANDWIDTH_MEDIUMBAND)
+ bw=OPUS_BANDWIDTH_NARROWBAND;
+ else if (tocmode==MODE_HYBRID&&bw<=OPUS_BANDWIDTH_SUPERWIDEBAND)
+ bw=OPUS_BANDWIDTH_SUPERWIDEBAND;
+
+ data[0] = gen_toc(tocmode, frame_rate, bw, st->stream_channels);
+ data[0] |= packet_code;
+
+ ret = packet_code <= 1 ? 1 : 2;
+
+ max_data_bytes = IMAX(max_data_bytes, ret);
+
+ if (packet_code==3)
+ data[1] = num_multiframes;
+
+ if (!st->use_vbr)
+ {
+ ret = opus_packet_pad(data, ret, max_data_bytes);
+ if (ret == OPUS_OK)
+ ret = max_data_bytes;
+ else
+ ret = OPUS_INTERNAL_ERROR;
+ }
+ RESTORE_STACK;
+ return ret;
+ }
+ max_rate = frame_rate*max_data_bytes*8;
+
+ /* Equivalent 20-ms rate for mode/channel/bandwidth decisions */
+ equiv_rate = compute_equiv_rate(st->bitrate_bps, st->channels, st->Fs/frame_size,
+ st->use_vbr, 0, st->silk_mode.complexity, st->silk_mode.packetLossPercentage);
+
+ if (st->signal_type == OPUS_SIGNAL_VOICE)
+ voice_est = 127;
+ else if (st->signal_type == OPUS_SIGNAL_MUSIC)
+ voice_est = 0;
+ else if (st->voice_ratio >= 0)
+ {
+ voice_est = st->voice_ratio*327>>8;
+ /* For AUDIO, never be more than 90% confident of having speech */
+ if (st->application == OPUS_APPLICATION_AUDIO)
+ voice_est = IMIN(voice_est, 115);
+ } else if (st->application == OPUS_APPLICATION_VOIP)
+ voice_est = 115;
+ else
+ voice_est = 48;
+
+ if (st->force_channels!=OPUS_AUTO && st->channels == 2)
+ {
+ st->stream_channels = st->force_channels;
+ } else {
+#ifdef FUZZING
+ (void)stereo_music_threshold;
+ (void)stereo_voice_threshold;
+ /* Random mono/stereo decision */
+ if (st->channels == 2 && (rand()&0x1F)==0)
+ st->stream_channels = 3-st->stream_channels;
+#else
+ /* Rate-dependent mono-stereo decision */
+ if (st->channels == 2)
+ {
+ opus_int32 stereo_threshold;
+ stereo_threshold = stereo_music_threshold + ((voice_est*voice_est*(stereo_voice_threshold-stereo_music_threshold))>>14);
+ if (st->stream_channels == 2)
+ stereo_threshold -= 1000;
+ else
+ stereo_threshold += 1000;
+ st->stream_channels = (equiv_rate > stereo_threshold) ? 2 : 1;
+ } else {
+ st->stream_channels = st->channels;
+ }
+#endif
+ }
+ /* Update equivalent rate for channels decision. */
+ equiv_rate = compute_equiv_rate(st->bitrate_bps, st->stream_channels, st->Fs/frame_size,
+ st->use_vbr, 0, st->silk_mode.complexity, st->silk_mode.packetLossPercentage);
+
+ /* Allow SILK DTX if DTX is enabled but the generalized DTX cannot be used,
+ e.g. because of the complexity setting or sample rate. */
+#ifndef DISABLE_FLOAT_API
+ st->silk_mode.useDTX = st->use_dtx && !(analysis_info.valid || is_silence);
+#else
+ st->silk_mode.useDTX = st->use_dtx;
+#endif
+
+ /* Mode selection depending on application and signal type */
+ if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
+ {
+ st->mode = MODE_CELT_ONLY;
+ } else if (st->user_forced_mode == OPUS_AUTO)
+ {
+#ifdef FUZZING
+ (void)stereo_width;
+ (void)mode_thresholds;
+ /* Random mode switching */
+ if ((rand()&0xF)==0)
+ {
+ if ((rand()&0x1)==0)
+ st->mode = MODE_CELT_ONLY;
+ else
+ st->mode = MODE_SILK_ONLY;
+ } else {
+ if (st->prev_mode==MODE_CELT_ONLY)
+ st->mode = MODE_CELT_ONLY;
+ else
+ st->mode = MODE_SILK_ONLY;
+ }
+#else
+ opus_int32 mode_voice, mode_music;
+ opus_int32 threshold;
+
+ /* Interpolate based on stereo width */
+ mode_voice = (opus_int32)(MULT16_32_Q15(Q15ONE-stereo_width,mode_thresholds[0][0])
+ + MULT16_32_Q15(stereo_width,mode_thresholds[1][0]));
+ mode_music = (opus_int32)(MULT16_32_Q15(Q15ONE-stereo_width,mode_thresholds[1][1])
+ + MULT16_32_Q15(stereo_width,mode_thresholds[1][1]));
+ /* Interpolate based on speech/music probability */
+ threshold = mode_music + ((voice_est*voice_est*(mode_voice-mode_music))>>14);
+ /* Bias towards SILK for VoIP because of some useful features */
+ if (st->application == OPUS_APPLICATION_VOIP)
+ threshold += 8000;
+
+ /*printf("%f %d\n", stereo_width/(float)Q15ONE, threshold);*/
+ /* Hysteresis */
+ if (st->prev_mode == MODE_CELT_ONLY)
+ threshold -= 4000;
+ else if (st->prev_mode>0)
+ threshold += 4000;
+
+ st->mode = (equiv_rate >= threshold) ? MODE_CELT_ONLY: MODE_SILK_ONLY;
+
+ /* When FEC is enabled and there's enough packet loss, use SILK.
+ Unless the FEC is set to 2, in which case we don't switch to SILK if we're confident we have music. */
+ if (st->silk_mode.useInBandFEC && st->silk_mode.packetLossPercentage > (128-voice_est)>>4 && (st->fec_config != 2 || voice_est > 25))
+ st->mode = MODE_SILK_ONLY;
+ /* When encoding voice and DTX is enabled but the generalized DTX cannot be used,
+ use SILK in order to make use of its DTX. */
+ if (st->silk_mode.useDTX && voice_est > 100)
+ st->mode = MODE_SILK_ONLY;
+#endif
+
+ /* If max_data_bytes represents less than 6 kb/s, switch to CELT-only mode */
+ if (max_data_bytes < (frame_rate > 50 ? 9000 : 6000)*frame_size / (st->Fs * 8))
+ st->mode = MODE_CELT_ONLY;
+ } else {
+ st->mode = st->user_forced_mode;
+ }
+
+ /* Override the chosen mode to make sure we meet the requested frame size */
+ if (st->mode != MODE_CELT_ONLY && frame_size < st->Fs/100)
+ st->mode = MODE_CELT_ONLY;
+ if (st->lfe)
+ st->mode = MODE_CELT_ONLY;
+
+ if (st->prev_mode > 0 &&
+ ((st->mode != MODE_CELT_ONLY && st->prev_mode == MODE_CELT_ONLY) ||
+ (st->mode == MODE_CELT_ONLY && st->prev_mode != MODE_CELT_ONLY)))
+ {
+ redundancy = 1;
+ celt_to_silk = (st->mode != MODE_CELT_ONLY);
+ if (!celt_to_silk)
+ {
+ /* Switch to SILK/hybrid if frame size is 10 ms or more*/
+ if (frame_size >= st->Fs/100)
+ {
+ st->mode = st->prev_mode;
+ to_celt = 1;
+ } else {
+ redundancy=0;
+ }
+ }
+ }
+
+ /* When encoding multiframes, we can ask for a switch to CELT only in the last frame. This switch
+ * is processed above as the requested mode shouldn't interrupt stereo->mono transition. */
+ if (st->stream_channels == 1 && st->prev_channels ==2 && st->silk_mode.toMono==0
+ && st->mode != MODE_CELT_ONLY && st->prev_mode != MODE_CELT_ONLY)
+ {
+ /* Delay stereo->mono transition by two frames so that SILK can do a smooth downmix */
+ st->silk_mode.toMono = 1;
+ st->stream_channels = 2;
+ } else {
+ st->silk_mode.toMono = 0;
+ }
+
+ /* Update equivalent rate with mode decision. */
+ equiv_rate = compute_equiv_rate(st->bitrate_bps, st->stream_channels, st->Fs/frame_size,
+ st->use_vbr, st->mode, st->silk_mode.complexity, st->silk_mode.packetLossPercentage);
+
+ if (st->mode != MODE_CELT_ONLY && st->prev_mode == MODE_CELT_ONLY)
+ {
+ silk_EncControlStruct dummy;
+ silk_InitEncoder( silk_enc, st->arch, &dummy);
+ prefill=1;
+ }
+
+ /* Automatic (rate-dependent) bandwidth selection */
+ if (st->mode == MODE_CELT_ONLY || st->first || st->silk_mode.allowBandwidthSwitch)
+ {
+ const opus_int32 *voice_bandwidth_thresholds, *music_bandwidth_thresholds;
+ opus_int32 bandwidth_thresholds[8];
+ int bandwidth = OPUS_BANDWIDTH_FULLBAND;
+
+ if (st->channels==2 && st->force_channels!=1)
+ {
+ voice_bandwidth_thresholds = stereo_voice_bandwidth_thresholds;
+ music_bandwidth_thresholds = stereo_music_bandwidth_thresholds;
+ } else {
+ voice_bandwidth_thresholds = mono_voice_bandwidth_thresholds;
+ music_bandwidth_thresholds = mono_music_bandwidth_thresholds;
+ }
+ /* Interpolate bandwidth thresholds depending on voice estimation */
+ for (i=0;i<8;i++)
+ {
+ bandwidth_thresholds[i] = music_bandwidth_thresholds[i]
+ + ((voice_est*voice_est*(voice_bandwidth_thresholds[i]-music_bandwidth_thresholds[i]))>>14);
+ }
+ do {
+ int threshold, hysteresis;
+ threshold = bandwidth_thresholds[2*(bandwidth-OPUS_BANDWIDTH_MEDIUMBAND)];
+ hysteresis = bandwidth_thresholds[2*(bandwidth-OPUS_BANDWIDTH_MEDIUMBAND)+1];
+ if (!st->first)
+ {
+ if (st->auto_bandwidth >= bandwidth)
+ threshold -= hysteresis;
+ else
+ threshold += hysteresis;
+ }
+ if (equiv_rate >= threshold)
+ break;
+ } while (--bandwidth>OPUS_BANDWIDTH_NARROWBAND);
+ /* We don't use mediumband anymore, except when explicitly requested or during
+ mode transitions. */
+ if (bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
+ bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ st->bandwidth = st->auto_bandwidth = bandwidth;
+ /* Prevents any transition to SWB/FB until the SILK layer has fully
+ switched to WB mode and turned the variable LP filter off */
+ if (!st->first && st->mode != MODE_CELT_ONLY && !st->silk_mode.inWBmodeWithoutVariableLP && st->bandwidth > OPUS_BANDWIDTH_WIDEBAND)
+ st->bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ }
+
+ if (st->bandwidth>st->max_bandwidth)
+ st->bandwidth = st->max_bandwidth;
+
+ if (st->user_bandwidth != OPUS_AUTO)
+ st->bandwidth = st->user_bandwidth;
+
+ /* This prevents us from using hybrid at unsafe CBR/max rates */
+ if (st->mode != MODE_CELT_ONLY && max_rate < 15000)
+ {
+ st->bandwidth = IMIN(st->bandwidth, OPUS_BANDWIDTH_WIDEBAND);
+ }
+
+ /* Prevents Opus from wasting bits on frequencies that are above
+ the Nyquist rate of the input signal */
+ if (st->Fs <= 24000 && st->bandwidth > OPUS_BANDWIDTH_SUPERWIDEBAND)
+ st->bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
+ if (st->Fs <= 16000 && st->bandwidth > OPUS_BANDWIDTH_WIDEBAND)
+ st->bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ if (st->Fs <= 12000 && st->bandwidth > OPUS_BANDWIDTH_MEDIUMBAND)
+ st->bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
+ if (st->Fs <= 8000 && st->bandwidth > OPUS_BANDWIDTH_NARROWBAND)
+ st->bandwidth = OPUS_BANDWIDTH_NARROWBAND;
+#ifndef DISABLE_FLOAT_API
+ /* Use detected bandwidth to reduce the encoded bandwidth. */
+ if (st->detected_bandwidth && st->user_bandwidth == OPUS_AUTO)
+ {
+ int min_detected_bandwidth;
+ /* Makes bandwidth detection more conservative just in case the detector
+ gets it wrong when we could have coded a high bandwidth transparently.
+ When operating in SILK/hybrid mode, we don't go below wideband to avoid
+ more complicated switches that require redundancy. */
+ if (equiv_rate <= 18000*st->stream_channels && st->mode == MODE_CELT_ONLY)
+ min_detected_bandwidth = OPUS_BANDWIDTH_NARROWBAND;
+ else if (equiv_rate <= 24000*st->stream_channels && st->mode == MODE_CELT_ONLY)
+ min_detected_bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
+ else if (equiv_rate <= 30000*st->stream_channels)
+ min_detected_bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ else if (equiv_rate <= 44000*st->stream_channels)
+ min_detected_bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
+ else
+ min_detected_bandwidth = OPUS_BANDWIDTH_FULLBAND;
+
+ st->detected_bandwidth = IMAX(st->detected_bandwidth, min_detected_bandwidth);
+ st->bandwidth = IMIN(st->bandwidth, st->detected_bandwidth);
+ }
+#endif
+ st->silk_mode.LBRR_coded = decide_fec(st->silk_mode.useInBandFEC, st->silk_mode.packetLossPercentage,
+ st->silk_mode.LBRR_coded, st->mode, &st->bandwidth, equiv_rate);
+ celt_encoder_ctl(celt_enc, OPUS_SET_LSB_DEPTH(lsb_depth));
+
+ /* CELT mode doesn't support mediumband, use wideband instead */
+ if (st->mode == MODE_CELT_ONLY && st->bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
+ st->bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ if (st->lfe)
+ st->bandwidth = OPUS_BANDWIDTH_NARROWBAND;
+
+ curr_bandwidth = st->bandwidth;
+
+ /* Chooses the appropriate mode for speech
+ *NEVER* switch to/from CELT-only mode here as this will invalidate some assumptions */
+ if (st->mode == MODE_SILK_ONLY && curr_bandwidth > OPUS_BANDWIDTH_WIDEBAND)
+ st->mode = MODE_HYBRID;
+ if (st->mode == MODE_HYBRID && curr_bandwidth <= OPUS_BANDWIDTH_WIDEBAND)
+ st->mode = MODE_SILK_ONLY;
+
+ /* Can't support higher than >60 ms frames, and >20 ms when in Hybrid or CELT-only modes */
+ if ((frame_size > st->Fs/50 && (st->mode != MODE_SILK_ONLY)) || frame_size > 3*st->Fs/50)
+ {
+ int enc_frame_size;
+ int nb_frames;
+
+ if (st->mode == MODE_SILK_ONLY)
+ {
+ if (frame_size == 2*st->Fs/25) /* 80 ms -> 2x 40 ms */
+ enc_frame_size = st->Fs/25;
+ else if (frame_size == 3*st->Fs/25) /* 120 ms -> 2x 60 ms */
+ enc_frame_size = 3*st->Fs/50;
+ else /* 100 ms -> 5x 20 ms */
+ enc_frame_size = st->Fs/50;
+ }
+ else
+ enc_frame_size = st->Fs/50;
+
+ nb_frames = frame_size/enc_frame_size;
+
+#ifndef DISABLE_FLOAT_API
+ if (analysis_read_pos_bak!= -1)
+ {
+ st->analysis.read_pos = analysis_read_pos_bak;
+ st->analysis.read_subframe = analysis_read_subframe_bak;
+ }
+#endif
+
+ ret = encode_multiframe_packet(st, pcm, nb_frames, enc_frame_size, data,
+ out_data_bytes, to_celt, lsb_depth, float_api);
+
+ RESTORE_STACK;
+ return ret;
+ }
+
+ /* For the first frame at a new SILK bandwidth */
+ if (st->silk_bw_switch)
+ {
+ redundancy = 1;
+ celt_to_silk = 1;
+ st->silk_bw_switch = 0;
+ /* Do a prefill without reseting the sampling rate control. */
+ prefill=2;
+ }
+
+ /* If we decided to go with CELT, make sure redundancy is off, no matter what
+ we decided earlier. */
+ if (st->mode == MODE_CELT_ONLY)
+ redundancy = 0;
+
+ if (redundancy)
+ {
+ redundancy_bytes = compute_redundancy_bytes(max_data_bytes, st->bitrate_bps, frame_rate, st->stream_channels);
+ if (redundancy_bytes == 0)
+ redundancy = 0;
+ }
+
+ /* printf("%d %d %d %d\n", st->bitrate_bps, st->stream_channels, st->mode, curr_bandwidth); */
+ bytes_target = IMIN(max_data_bytes-redundancy_bytes, st->bitrate_bps * frame_size / (st->Fs * 8)) - 1;
+
+ data += 1;
+
+ ec_enc_init(&enc, data, max_data_bytes-1);
+
+ ALLOC(pcm_buf, (total_buffer+frame_size)*st->channels, opus_val16);
+ OPUS_COPY(pcm_buf, &st->delay_buffer[(st->encoder_buffer-total_buffer)*st->channels], total_buffer*st->channels);
+
+ if (st->mode == MODE_CELT_ONLY)
+ hp_freq_smth1 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
+ else
+ hp_freq_smth1 = ((silk_encoder*)silk_enc)->state_Fxx[0].sCmn.variable_HP_smth1_Q15;
+
+ st->variable_HP_smth2_Q15 = silk_SMLAWB( st->variable_HP_smth2_Q15,
+ hp_freq_smth1 - st->variable_HP_smth2_Q15, SILK_FIX_CONST( VARIABLE_HP_SMTH_COEF2, 16 ) );
+
+ /* convert from log scale to Hertz */
+ cutoff_Hz = silk_log2lin( silk_RSHIFT( st->variable_HP_smth2_Q15, 8 ) );
+
+ if (st->application == OPUS_APPLICATION_VOIP)
+ {
+ hp_cutoff(pcm, cutoff_Hz, &pcm_buf[total_buffer*st->channels], st->hp_mem, frame_size, st->channels, st->Fs, st->arch);
+ } else {
+ dc_reject(pcm, 3, &pcm_buf[total_buffer*st->channels], st->hp_mem, frame_size, st->channels, st->Fs);
+ }
+#ifndef FIXED_POINT
+ if (float_api)
+ {
+ opus_val32 sum;
+ sum = celt_inner_prod(&pcm_buf[total_buffer*st->channels], &pcm_buf[total_buffer*st->channels], frame_size*st->channels, st->arch);
+ /* This should filter out both NaNs and ridiculous signals that could
+ cause NaNs further down. */
+ if (!(sum < 1e9f) || celt_isnan(sum))
+ {
+ OPUS_CLEAR(&pcm_buf[total_buffer*st->channels], frame_size*st->channels);
+ st->hp_mem[0] = st->hp_mem[1] = st->hp_mem[2] = st->hp_mem[3] = 0;
+ }
+ }
+#endif
+
+
+ /* SILK processing */
+ HB_gain = Q15ONE;
+ if (st->mode != MODE_CELT_ONLY)
+ {
+ opus_int32 total_bitRate, celt_rate;
+#ifdef FIXED_POINT
+ const opus_int16 *pcm_silk;
+#else
+ VARDECL(opus_int16, pcm_silk);
+ ALLOC(pcm_silk, st->channels*frame_size, opus_int16);
+#endif
+
+ /* Distribute bits between SILK and CELT */
+ total_bitRate = 8 * bytes_target * frame_rate;
+ if( st->mode == MODE_HYBRID ) {
+ /* Base rate for SILK */
+ st->silk_mode.bitRate = compute_silk_rate_for_hybrid(total_bitRate,
+ curr_bandwidth, st->Fs == 50 * frame_size, st->use_vbr, st->silk_mode.LBRR_coded,
+ st->stream_channels);
+ if (!st->energy_masking)
+ {
+ /* Increasingly attenuate high band when it gets allocated fewer bits */
+ celt_rate = total_bitRate - st->silk_mode.bitRate;
+ HB_gain = Q15ONE - SHR32(celt_exp2(-celt_rate * QCONST16(1.f/1024, 10)), 1);
+ }
+ } else {
+ /* SILK gets all bits */
+ st->silk_mode.bitRate = total_bitRate;
+ }
+
+ /* Surround masking for SILK */
+ if (st->energy_masking && st->use_vbr && !st->lfe)
+ {
+ opus_val32 mask_sum=0;
+ opus_val16 masking_depth;
+ opus_int32 rate_offset;
+ int c;
+ int end = 17;
+ opus_int16 srate = 16000;
+ if (st->bandwidth == OPUS_BANDWIDTH_NARROWBAND)
+ {
+ end = 13;
+ srate = 8000;
+ } else if (st->bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
+ {
+ end = 15;
+ srate = 12000;
+ }
+ for (c=0;c<st->channels;c++)
+ {
+ for(i=0;i<end;i++)
+ {
+ opus_val16 mask;
+ mask = MAX16(MIN16(st->energy_masking[21*c+i],
+ QCONST16(.5f, DB_SHIFT)), -QCONST16(2.0f, DB_SHIFT));
+ if (mask > 0)
+ mask = HALF16(mask);
+ mask_sum += mask;
+ }
+ }
+ /* Conservative rate reduction, we cut the masking in half */
+ masking_depth = mask_sum / end*st->channels;
+ masking_depth += QCONST16(.2f, DB_SHIFT);
+ rate_offset = (opus_int32)PSHR32(MULT16_16(srate, masking_depth), DB_SHIFT);
+ rate_offset = MAX32(rate_offset, -2*st->silk_mode.bitRate/3);
+ /* Split the rate change between the SILK and CELT part for hybrid. */
+ if (st->bandwidth==OPUS_BANDWIDTH_SUPERWIDEBAND || st->bandwidth==OPUS_BANDWIDTH_FULLBAND)
+ st->silk_mode.bitRate += 3*rate_offset/5;
+ else
+ st->silk_mode.bitRate += rate_offset;
+ }
+
+ st->silk_mode.payloadSize_ms = 1000 * frame_size / st->Fs;
+ st->silk_mode.nChannelsAPI = st->channels;
+ st->silk_mode.nChannelsInternal = st->stream_channels;
+ if (curr_bandwidth == OPUS_BANDWIDTH_NARROWBAND) {
+ st->silk_mode.desiredInternalSampleRate = 8000;
+ } else if (curr_bandwidth == OPUS_BANDWIDTH_MEDIUMBAND) {
+ st->silk_mode.desiredInternalSampleRate = 12000;
+ } else {
+ celt_assert( st->mode == MODE_HYBRID || curr_bandwidth == OPUS_BANDWIDTH_WIDEBAND );
+ st->silk_mode.desiredInternalSampleRate = 16000;
+ }
+ if( st->mode == MODE_HYBRID ) {
+ /* Don't allow bandwidth reduction at lowest bitrates in hybrid mode */
+ st->silk_mode.minInternalSampleRate = 16000;
+ } else {
+ st->silk_mode.minInternalSampleRate = 8000;
+ }
+
+ st->silk_mode.maxInternalSampleRate = 16000;
+ if (st->mode == MODE_SILK_ONLY)
+ {
+ opus_int32 effective_max_rate = max_rate;
+ if (frame_rate > 50)
+ effective_max_rate = effective_max_rate*2/3;
+ if (effective_max_rate < 8000)
+ {
+ st->silk_mode.maxInternalSampleRate = 12000;
+ st->silk_mode.desiredInternalSampleRate = IMIN(12000, st->silk_mode.desiredInternalSampleRate);
+ }
+ if (effective_max_rate < 7000)
+ {
+ st->silk_mode.maxInternalSampleRate = 8000;
+ st->silk_mode.desiredInternalSampleRate = IMIN(8000, st->silk_mode.desiredInternalSampleRate);
+ }
+ }
+
+ st->silk_mode.useCBR = !st->use_vbr;
+
+ /* Call SILK encoder for the low band */
+
+ /* Max bits for SILK, counting ToC, redundancy bytes, and optionally redundancy. */
+ st->silk_mode.maxBits = (max_data_bytes-1)*8;
+ if (redundancy && redundancy_bytes >= 2)
+ {
+ /* Counting 1 bit for redundancy position and 20 bits for flag+size (only for hybrid). */
+ st->silk_mode.maxBits -= redundancy_bytes*8 + 1;
+ if (st->mode == MODE_HYBRID)
+ st->silk_mode.maxBits -= 20;
+ }
+ if (st->silk_mode.useCBR)
+ {
+ if (st->mode == MODE_HYBRID)
+ {
+ st->silk_mode.maxBits = IMIN(st->silk_mode.maxBits, st->silk_mode.bitRate * frame_size / st->Fs);
+ }
+ } else {
+ /* Constrained VBR. */
+ if (st->mode == MODE_HYBRID)
+ {
+ /* Compute SILK bitrate corresponding to the max total bits available */
+ opus_int32 maxBitRate = compute_silk_rate_for_hybrid(st->silk_mode.maxBits*st->Fs / frame_size,
+ curr_bandwidth, st->Fs == 50 * frame_size, st->use_vbr, st->silk_mode.LBRR_coded,
+ st->stream_channels);
+ st->silk_mode.maxBits = maxBitRate * frame_size / st->Fs;
+ }
+ }
+
+ if (prefill)
+ {
+ opus_int32 zero=0;
+ int prefill_offset;
+ /* Use a smooth onset for the SILK prefill to avoid the encoder trying to encode
+ a discontinuity. The exact location is what we need to avoid leaving any "gap"
+ in the audio when mixing with the redundant CELT frame. Here we can afford to
+ overwrite st->delay_buffer because the only thing that uses it before it gets
+ rewritten is tmp_prefill[] and even then only the part after the ramp really
+ gets used (rather than sent to the encoder and discarded) */
+ prefill_offset = st->channels*(st->encoder_buffer-st->delay_compensation-st->Fs/400);
+ gain_fade(st->delay_buffer+prefill_offset, st->delay_buffer+prefill_offset,
+ 0, Q15ONE, celt_mode->overlap, st->Fs/400, st->channels, celt_mode->window, st->Fs);
+ OPUS_CLEAR(st->delay_buffer, prefill_offset);
+#ifdef FIXED_POINT
+ pcm_silk = st->delay_buffer;
+#else
+ for (i=0;i<st->encoder_buffer*st->channels;i++)
+ pcm_silk[i] = FLOAT2INT16(st->delay_buffer[i]);
+#endif
+ silk_Encode( silk_enc, &st->silk_mode, pcm_silk, st->encoder_buffer, NULL, &zero, prefill, activity );
+ /* Prevent a second switch in the real encode call. */
+ st->silk_mode.opusCanSwitch = 0;
+ }
+
+#ifdef FIXED_POINT
+ pcm_silk = pcm_buf+total_buffer*st->channels;
+#else
+ for (i=0;i<frame_size*st->channels;i++)
+ pcm_silk[i] = FLOAT2INT16(pcm_buf[total_buffer*st->channels + i]);
+#endif
+ ret = silk_Encode( silk_enc, &st->silk_mode, pcm_silk, frame_size, &enc, &nBytes, 0, activity );
+ if( ret ) {
+ /*fprintf (stderr, "SILK encode error: %d\n", ret);*/
+ /* Handle error */
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+
+ /* Extract SILK internal bandwidth for signaling in first byte */
+ if( st->mode == MODE_SILK_ONLY ) {
+ if( st->silk_mode.internalSampleRate == 8000 ) {
+ curr_bandwidth = OPUS_BANDWIDTH_NARROWBAND;
+ } else if( st->silk_mode.internalSampleRate == 12000 ) {
+ curr_bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
+ } else if( st->silk_mode.internalSampleRate == 16000 ) {
+ curr_bandwidth = OPUS_BANDWIDTH_WIDEBAND;
+ }
+ } else {
+ celt_assert( st->silk_mode.internalSampleRate == 16000 );
+ }
+
+ st->silk_mode.opusCanSwitch = st->silk_mode.switchReady && !st->nonfinal_frame;
+
+ if (nBytes==0)
+ {
+ st->rangeFinal = 0;
+ data[-1] = gen_toc(st->mode, st->Fs/frame_size, curr_bandwidth, st->stream_channels);
+ RESTORE_STACK;
+ return 1;
+ }
+
+ /* FIXME: How do we allocate the redundancy for CBR? */
+ if (st->silk_mode.opusCanSwitch)
+ {
+ redundancy_bytes = compute_redundancy_bytes(max_data_bytes, st->bitrate_bps, frame_rate, st->stream_channels);
+ redundancy = (redundancy_bytes != 0);
+ celt_to_silk = 0;
+ st->silk_bw_switch = 1;
+ }
+ }
+
+ /* CELT processing */
+ {
+ int endband=21;
+
+ switch(curr_bandwidth)
+ {
+ case OPUS_BANDWIDTH_NARROWBAND:
+ endband = 13;
+ break;
+ case OPUS_BANDWIDTH_MEDIUMBAND:
+ case OPUS_BANDWIDTH_WIDEBAND:
+ endband = 17;
+ break;
+ case OPUS_BANDWIDTH_SUPERWIDEBAND:
+ endband = 19;
+ break;
+ case OPUS_BANDWIDTH_FULLBAND:
+ endband = 21;
+ break;
+ }
+ celt_encoder_ctl(celt_enc, CELT_SET_END_BAND(endband));
+ celt_encoder_ctl(celt_enc, CELT_SET_CHANNELS(st->stream_channels));
+ }
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(OPUS_BITRATE_MAX));
+ if (st->mode != MODE_SILK_ONLY)
+ {
+ opus_val32 celt_pred=2;
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR(0));
+ /* We may still decide to disable prediction later */
+ if (st->silk_mode.reducedDependency)
+ celt_pred = 0;
+ celt_encoder_ctl(celt_enc, CELT_SET_PREDICTION(celt_pred));
+
+ if (st->mode == MODE_HYBRID)
+ {
+ if( st->use_vbr ) {
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(st->bitrate_bps-st->silk_mode.bitRate));
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR_CONSTRAINT(0));
+ }
+ } else {
+ if (st->use_vbr)
+ {
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR(1));
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR_CONSTRAINT(st->vbr_constraint));
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(st->bitrate_bps));
+ }
+ }
+ }
+
+ ALLOC(tmp_prefill, st->channels*st->Fs/400, opus_val16);
+ if (st->mode != MODE_SILK_ONLY && st->mode != st->prev_mode && st->prev_mode > 0)
+ {
+ OPUS_COPY(tmp_prefill, &st->delay_buffer[(st->encoder_buffer-total_buffer-st->Fs/400)*st->channels], st->channels*st->Fs/400);
+ }
+
+ if (st->channels*(st->encoder_buffer-(frame_size+total_buffer)) > 0)
+ {
+ OPUS_MOVE(st->delay_buffer, &st->delay_buffer[st->channels*frame_size], st->channels*(st->encoder_buffer-frame_size-total_buffer));
+ OPUS_COPY(&st->delay_buffer[st->channels*(st->encoder_buffer-frame_size-total_buffer)],
+ &pcm_buf[0],
+ (frame_size+total_buffer)*st->channels);
+ } else {
+ OPUS_COPY(st->delay_buffer, &pcm_buf[(frame_size+total_buffer-st->encoder_buffer)*st->channels], st->encoder_buffer*st->channels);
+ }
+ /* gain_fade() and stereo_fade() need to be after the buffer copying
+ because we don't want any of this to affect the SILK part */
+ if( st->prev_HB_gain < Q15ONE || HB_gain < Q15ONE ) {
+ gain_fade(pcm_buf, pcm_buf,
+ st->prev_HB_gain, HB_gain, celt_mode->overlap, frame_size, st->channels, celt_mode->window, st->Fs);
+ }
+ st->prev_HB_gain = HB_gain;
+ if (st->mode != MODE_HYBRID || st->stream_channels==1)
+ {
+ if (equiv_rate > 32000)
+ st->silk_mode.stereoWidth_Q14 = 16384;
+ else if (equiv_rate < 16000)
+ st->silk_mode.stereoWidth_Q14 = 0;
+ else
+ st->silk_mode.stereoWidth_Q14 = 16384 - 2048*(opus_int32)(32000-equiv_rate)/(equiv_rate-14000);
+ }
+ if( !st->energy_masking && st->channels == 2 ) {
+ /* Apply stereo width reduction (at low bitrates) */
+ if( st->hybrid_stereo_width_Q14 < (1 << 14) || st->silk_mode.stereoWidth_Q14 < (1 << 14) ) {
+ opus_val16 g1, g2;
+ g1 = st->hybrid_stereo_width_Q14;
+ g2 = (opus_val16)(st->silk_mode.stereoWidth_Q14);
+#ifdef FIXED_POINT
+ g1 = g1==16384 ? Q15ONE : SHL16(g1,1);
+ g2 = g2==16384 ? Q15ONE : SHL16(g2,1);
+#else
+ g1 *= (1.f/16384);
+ g2 *= (1.f/16384);
+#endif
+ stereo_fade(pcm_buf, pcm_buf, g1, g2, celt_mode->overlap,
+ frame_size, st->channels, celt_mode->window, st->Fs);
+ st->hybrid_stereo_width_Q14 = st->silk_mode.stereoWidth_Q14;
+ }
+ }
+
+ if ( st->mode != MODE_CELT_ONLY && ec_tell(&enc)+17+20*(st->mode == MODE_HYBRID) <= 8*(max_data_bytes-1))
+ {
+ /* For SILK mode, the redundancy is inferred from the length */
+ if (st->mode == MODE_HYBRID)
+ ec_enc_bit_logp(&enc, redundancy, 12);
+ if (redundancy)
+ {
+ int max_redundancy;
+ ec_enc_bit_logp(&enc, celt_to_silk, 1);
+ if (st->mode == MODE_HYBRID)
+ {
+ /* Reserve the 8 bits needed for the redundancy length,
+ and at least a few bits for CELT if possible */
+ max_redundancy = (max_data_bytes-1)-((ec_tell(&enc)+8+3+7)>>3);
+ }
+ else
+ max_redundancy = (max_data_bytes-1)-((ec_tell(&enc)+7)>>3);
+ /* Target the same bit-rate for redundancy as for the rest,
+ up to a max of 257 bytes */
+ redundancy_bytes = IMIN(max_redundancy, redundancy_bytes);
+ redundancy_bytes = IMIN(257, IMAX(2, redundancy_bytes));
+ if (st->mode == MODE_HYBRID)
+ ec_enc_uint(&enc, redundancy_bytes-2, 256);
+ }
+ } else {
+ redundancy = 0;
+ }
+
+ if (!redundancy)
+ {
+ st->silk_bw_switch = 0;
+ redundancy_bytes = 0;
+ }
+ if (st->mode != MODE_CELT_ONLY)start_band=17;
+
+ if (st->mode == MODE_SILK_ONLY)
+ {
+ ret = (ec_tell(&enc)+7)>>3;
+ ec_enc_done(&enc);
+ nb_compr_bytes = ret;
+ } else {
+ nb_compr_bytes = (max_data_bytes-1)-redundancy_bytes;
+ ec_enc_shrink(&enc, nb_compr_bytes);
+ }
+
+#ifndef DISABLE_FLOAT_API
+ if (redundancy || st->mode != MODE_SILK_ONLY)
+ celt_encoder_ctl(celt_enc, CELT_SET_ANALYSIS(&analysis_info));
+#endif
+ if (st->mode == MODE_HYBRID) {
+ SILKInfo info;
+ info.signalType = st->silk_mode.signalType;
+ info.offset = st->silk_mode.offset;
+ celt_encoder_ctl(celt_enc, CELT_SET_SILK_INFO(&info));
+ }
+
+ /* 5 ms redundant frame for CELT->SILK */
+ if (redundancy && celt_to_silk)
+ {
+ int err;
+ celt_encoder_ctl(celt_enc, CELT_SET_START_BAND(0));
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR(0));
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(OPUS_BITRATE_MAX));
+ err = celt_encode_with_ec(celt_enc, pcm_buf, st->Fs/200, data+nb_compr_bytes, redundancy_bytes, NULL);
+ if (err < 0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ celt_encoder_ctl(celt_enc, OPUS_GET_FINAL_RANGE(&redundant_rng));
+ celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
+ }
+
+ celt_encoder_ctl(celt_enc, CELT_SET_START_BAND(start_band));
+
+ if (st->mode != MODE_SILK_ONLY)
+ {
+ if (st->mode != st->prev_mode && st->prev_mode > 0)
+ {
+ unsigned char dummy[2];
+ celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
+
+ /* Prefilling */
+ celt_encode_with_ec(celt_enc, tmp_prefill, st->Fs/400, dummy, 2, NULL);
+ celt_encoder_ctl(celt_enc, CELT_SET_PREDICTION(0));
+ }
+ /* If false, we already busted the budget and we'll end up with a "PLC frame" */
+ if (ec_tell(&enc) <= 8*nb_compr_bytes)
+ {
+ /* Set the bitrate again if it was overridden in the redundancy code above*/
+ if (redundancy && celt_to_silk && st->mode==MODE_HYBRID && st->use_vbr)
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(st->bitrate_bps-st->silk_mode.bitRate));
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR(st->use_vbr));
+ ret = celt_encode_with_ec(celt_enc, pcm_buf, frame_size, NULL, nb_compr_bytes, &enc);
+ if (ret < 0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ /* Put CELT->SILK redundancy data in the right place. */
+ if (redundancy && celt_to_silk && st->mode==MODE_HYBRID && st->use_vbr)
+ {
+ OPUS_MOVE(data+ret, data+nb_compr_bytes, redundancy_bytes);
+ nb_compr_bytes = nb_compr_bytes+redundancy_bytes;
+ }
+ }
+ }
+
+ /* 5 ms redundant frame for SILK->CELT */
+ if (redundancy && !celt_to_silk)
+ {
+ int err;
+ unsigned char dummy[2];
+ int N2, N4;
+ N2 = st->Fs/200;
+ N4 = st->Fs/400;
+
+ celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
+ celt_encoder_ctl(celt_enc, CELT_SET_START_BAND(0));
+ celt_encoder_ctl(celt_enc, CELT_SET_PREDICTION(0));
+ celt_encoder_ctl(celt_enc, OPUS_SET_VBR(0));
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(OPUS_BITRATE_MAX));
+
+ if (st->mode == MODE_HYBRID)
+ {
+ /* Shrink packet to what the encoder actually used. */
+ nb_compr_bytes = ret;
+ ec_enc_shrink(&enc, nb_compr_bytes);
+ }
+ /* NOTE: We could speed this up slightly (at the expense of code size) by just adding a function that prefills the buffer */
+ celt_encode_with_ec(celt_enc, pcm_buf+st->channels*(frame_size-N2-N4), N4, dummy, 2, NULL);
+
+ err = celt_encode_with_ec(celt_enc, pcm_buf+st->channels*(frame_size-N2), N2, data+nb_compr_bytes, redundancy_bytes, NULL);
+ if (err < 0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ celt_encoder_ctl(celt_enc, OPUS_GET_FINAL_RANGE(&redundant_rng));
+ }
+
+
+
+ /* Signalling the mode in the first byte */
+ data--;
+ data[0] = gen_toc(st->mode, st->Fs/frame_size, curr_bandwidth, st->stream_channels);
+
+ st->rangeFinal = enc.rng ^ redundant_rng;
+
+ if (to_celt)
+ st->prev_mode = MODE_CELT_ONLY;
+ else
+ st->prev_mode = st->mode;
+ st->prev_channels = st->stream_channels;
+ st->prev_framesize = frame_size;
+
+ st->first = 0;
+
+ /* DTX decision */
+#ifndef DISABLE_FLOAT_API
+ if (st->use_dtx && (analysis_info.valid || is_silence))
+ {
+ if (decide_dtx_mode(activity, &st->nb_no_activity_ms_Q1, 2*1000*frame_size/st->Fs))
+ {
+ st->rangeFinal = 0;
+ data[0] = gen_toc(st->mode, st->Fs/frame_size, curr_bandwidth, st->stream_channels);
+ RESTORE_STACK;
+ return 1;
+ }
+ } else {
+ st->nb_no_activity_ms_Q1 = 0;
+ }
+#endif
+
+ /* In the unlikely case that the SILK encoder busted its target, tell
+ the decoder to call the PLC */
+ if (ec_tell(&enc) > (max_data_bytes-1)*8)
+ {
+ if (max_data_bytes < 2)
+ {
+ RESTORE_STACK;
+ return OPUS_BUFFER_TOO_SMALL;
+ }
+ data[1] = 0;
+ ret = 1;
+ st->rangeFinal = 0;
+ } else if (st->mode==MODE_SILK_ONLY&&!redundancy)
+ {
+ /*When in LPC only mode it's perfectly
+ reasonable to strip off trailing zero bytes as
+ the required range decoder behavior is to
+ fill these in. This can't be done when the MDCT
+ modes are used because the decoder needs to know
+ the actual length for allocation purposes.*/
+ while(ret>2&&data[ret]==0)ret--;
+ }
+ /* Count ToC and redundancy */
+ ret += 1+redundancy_bytes;
+ if (!st->use_vbr)
+ {
+ if (opus_packet_pad(data, ret, max_data_bytes) != OPUS_OK)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ ret = max_data_bytes;
+ }
+ RESTORE_STACK;
+ return ret;
+}
+
+#ifdef FIXED_POINT
+
+#ifndef DISABLE_FLOAT_API
+opus_int32 opus_encode_float(OpusEncoder *st, const float *pcm, int analysis_frame_size,
+ unsigned char *data, opus_int32 max_data_bytes)
+{
+ int i, ret;
+ int frame_size;
+ VARDECL(opus_int16, in);
+ ALLOC_STACK;
+
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
+ if (frame_size <= 0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ ALLOC(in, frame_size*st->channels, opus_int16);
+
+ for (i=0;i<frame_size*st->channels;i++)
+ in[i] = FLOAT2INT16(pcm[i]);
+ ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_float, 1);
+ RESTORE_STACK;
+ return ret;
+}
+#endif
+
+opus_int32 opus_encode(OpusEncoder *st, const opus_int16 *pcm, int analysis_frame_size,
+ unsigned char *data, opus_int32 out_data_bytes)
+{
+ int frame_size;
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
+ return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 16,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_int, 0);
+}
+
+#else
+opus_int32 opus_encode(OpusEncoder *st, const opus_int16 *pcm, int analysis_frame_size,
+ unsigned char *data, opus_int32 max_data_bytes)
+{
+ int i, ret;
+ int frame_size;
+ VARDECL(float, in);
+ ALLOC_STACK;
+
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
+ if (frame_size <= 0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ ALLOC(in, frame_size*st->channels, float);
+
+ for (i=0;i<frame_size*st->channels;i++)
+ in[i] = (1.0f/32768)*pcm[i];
+ ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_int, 0);
+ RESTORE_STACK;
+ return ret;
+}
+opus_int32 opus_encode_float(OpusEncoder *st, const float *pcm, int analysis_frame_size,
+ unsigned char *data, opus_int32 out_data_bytes)
+{
+ int frame_size;
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
+ return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 24,
+ pcm, analysis_frame_size, 0, -2, st->channels, downmix_float, 1);
+}
+#endif
+
+
+int opus_encoder_ctl(OpusEncoder *st, int request, ...)
+{
+ int ret;
+ CELTEncoder *celt_enc;
+ va_list ap;
+
+ ret = OPUS_OK;
+ va_start(ap, request);
+
+ celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
+
+ switch (request)
+ {
+ case OPUS_SET_APPLICATION_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if ( (value != OPUS_APPLICATION_VOIP && value != OPUS_APPLICATION_AUDIO
+ && value != OPUS_APPLICATION_RESTRICTED_LOWDELAY)
+ || (!st->first && st->application != value))
+ {
+ ret = OPUS_BAD_ARG;
+ break;
+ }
+ st->application = value;
+#ifndef DISABLE_FLOAT_API
+ st->analysis.application = value;
+#endif
+ }
+ break;
+ case OPUS_GET_APPLICATION_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->application;
+ }
+ break;
+ case OPUS_SET_BITRATE_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value != OPUS_AUTO && value != OPUS_BITRATE_MAX)
+ {
+ if (value <= 0)
+ goto bad_arg;
+ else if (value <= 500)
+ value = 500;
+ else if (value > (opus_int32)300000*st->channels)
+ value = (opus_int32)300000*st->channels;
+ }
+ st->user_bitrate_bps = value;
+ }
+ break;
+ case OPUS_GET_BITRATE_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = user_bitrate_to_bitrate(st, st->prev_framesize, 1276);
+ }
+ break;
+ case OPUS_SET_FORCE_CHANNELS_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if((value<1 || value>st->channels) && value != OPUS_AUTO)
+ {
+ goto bad_arg;
+ }
+ st->force_channels = value;
+ }
+ break;
+ case OPUS_GET_FORCE_CHANNELS_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->force_channels;
+ }
+ break;
+ case OPUS_SET_MAX_BANDWIDTH_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value < OPUS_BANDWIDTH_NARROWBAND || value > OPUS_BANDWIDTH_FULLBAND)
+ {
+ goto bad_arg;
+ }
+ st->max_bandwidth = value;
+ if (st->max_bandwidth == OPUS_BANDWIDTH_NARROWBAND) {
+ st->silk_mode.maxInternalSampleRate = 8000;
+ } else if (st->max_bandwidth == OPUS_BANDWIDTH_MEDIUMBAND) {
+ st->silk_mode.maxInternalSampleRate = 12000;
+ } else {
+ st->silk_mode.maxInternalSampleRate = 16000;
+ }
+ }
+ break;
+ case OPUS_GET_MAX_BANDWIDTH_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->max_bandwidth;
+ }
+ break;
+ case OPUS_SET_BANDWIDTH_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if ((value < OPUS_BANDWIDTH_NARROWBAND || value > OPUS_BANDWIDTH_FULLBAND) && value != OPUS_AUTO)
+ {
+ goto bad_arg;
+ }
+ st->user_bandwidth = value;
+ if (st->user_bandwidth == OPUS_BANDWIDTH_NARROWBAND) {
+ st->silk_mode.maxInternalSampleRate = 8000;
+ } else if (st->user_bandwidth == OPUS_BANDWIDTH_MEDIUMBAND) {
+ st->silk_mode.maxInternalSampleRate = 12000;
+ } else {
+ st->silk_mode.maxInternalSampleRate = 16000;
+ }
+ }
+ break;
+ case OPUS_GET_BANDWIDTH_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->bandwidth;
+ }
+ break;
+ case OPUS_SET_DTX_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>1)
+ {
+ goto bad_arg;
+ }
+ st->use_dtx = value;
+ }
+ break;
+ case OPUS_GET_DTX_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->use_dtx;
+ }
+ break;
+ case OPUS_SET_COMPLEXITY_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>10)
+ {
+ goto bad_arg;
+ }
+ st->silk_mode.complexity = value;
+ celt_encoder_ctl(celt_enc, OPUS_SET_COMPLEXITY(value));
+ }
+ break;
+ case OPUS_GET_COMPLEXITY_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->silk_mode.complexity;
+ }
+ break;
+ case OPUS_SET_INBAND_FEC_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>2)
+ {
+ goto bad_arg;
+ }
+ st->fec_config = value;
+ st->silk_mode.useInBandFEC = (value != 0);
+ }
+ break;
+ case OPUS_GET_INBAND_FEC_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->fec_config;
+ }
+ break;
+ case OPUS_SET_PACKET_LOSS_PERC_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value < 0 || value > 100)
+ {
+ goto bad_arg;
+ }
+ st->silk_mode.packetLossPercentage = value;
+ celt_encoder_ctl(celt_enc, OPUS_SET_PACKET_LOSS_PERC(value));
+ }
+ break;
+ case OPUS_GET_PACKET_LOSS_PERC_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->silk_mode.packetLossPercentage;
+ }
+ break;
+ case OPUS_SET_VBR_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>1)
+ {
+ goto bad_arg;
+ }
+ st->use_vbr = value;
+ st->silk_mode.useCBR = 1-value;
+ }
+ break;
+ case OPUS_GET_VBR_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->use_vbr;
+ }
+ break;
+ case OPUS_SET_VOICE_RATIO_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value<-1 || value>100)
+ {
+ goto bad_arg;
+ }
+ st->voice_ratio = value;
+ }
+ break;
+ case OPUS_GET_VOICE_RATIO_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->voice_ratio;
+ }
+ break;
+ case OPUS_SET_VBR_CONSTRAINT_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>1)
+ {
+ goto bad_arg;
+ }
+ st->vbr_constraint = value;
+ }
+ break;
+ case OPUS_GET_VBR_CONSTRAINT_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->vbr_constraint;
+ }
+ break;
+ case OPUS_SET_SIGNAL_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value!=OPUS_AUTO && value!=OPUS_SIGNAL_VOICE && value!=OPUS_SIGNAL_MUSIC)
+ {
+ goto bad_arg;
+ }
+ st->signal_type = value;
+ }
+ break;
+ case OPUS_GET_SIGNAL_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->signal_type;
+ }
+ break;
+ case OPUS_GET_LOOKAHEAD_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->Fs/400;
+ if (st->application != OPUS_APPLICATION_RESTRICTED_LOWDELAY)
+ *value += st->delay_compensation;
+ }
+ break;
+ case OPUS_GET_SAMPLE_RATE_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->Fs;
+ }
+ break;
+ case OPUS_GET_FINAL_RANGE_REQUEST:
+ {
+ opus_uint32 *value = va_arg(ap, opus_uint32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->rangeFinal;
+ }
+ break;
+ case OPUS_SET_LSB_DEPTH_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value<8 || value>24)
+ {
+ goto bad_arg;
+ }
+ st->lsb_depth=value;
+ }
+ break;
+ case OPUS_GET_LSB_DEPTH_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->lsb_depth;
+ }
+ break;
+ case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value != OPUS_FRAMESIZE_ARG && value != OPUS_FRAMESIZE_2_5_MS &&
+ value != OPUS_FRAMESIZE_5_MS && value != OPUS_FRAMESIZE_10_MS &&
+ value != OPUS_FRAMESIZE_20_MS && value != OPUS_FRAMESIZE_40_MS &&
+ value != OPUS_FRAMESIZE_60_MS && value != OPUS_FRAMESIZE_80_MS &&
+ value != OPUS_FRAMESIZE_100_MS && value != OPUS_FRAMESIZE_120_MS)
+ {
+ goto bad_arg;
+ }
+ st->variable_duration = value;
+ }
+ break;
+ case OPUS_GET_EXPERT_FRAME_DURATION_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->variable_duration;
+ }
+ break;
+ case OPUS_SET_PREDICTION_DISABLED_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value > 1 || value < 0)
+ goto bad_arg;
+ st->silk_mode.reducedDependency = value;
+ }
+ break;
+ case OPUS_GET_PREDICTION_DISABLED_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ goto bad_arg;
+ *value = st->silk_mode.reducedDependency;
+ }
+ break;
+ case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if(value<0 || value>1)
+ {
+ goto bad_arg;
+ }
+ celt_encoder_ctl(celt_enc, OPUS_SET_PHASE_INVERSION_DISABLED(value));
+ }
+ break;
+ case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ celt_encoder_ctl(celt_enc, OPUS_GET_PHASE_INVERSION_DISABLED(value));
+ }
+ break;
+ case OPUS_RESET_STATE:
+ {
+ void *silk_enc;
+ silk_EncControlStruct dummy;
+ char *start;
+ silk_enc = (char*)st+st->silk_enc_offset;
+#ifndef DISABLE_FLOAT_API
+ tonality_analysis_reset(&st->analysis);
+#endif
+
+ start = (char*)&st->OPUS_ENCODER_RESET_START;
+ OPUS_CLEAR(start, sizeof(OpusEncoder) - (start - (char*)st));
+
+ celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
+ silk_InitEncoder( silk_enc, st->arch, &dummy );
+ st->stream_channels = st->channels;
+ st->hybrid_stereo_width_Q14 = 1 << 14;
+ st->prev_HB_gain = Q15ONE;
+ st->first = 1;
+ st->mode = MODE_HYBRID;
+ st->bandwidth = OPUS_BANDWIDTH_FULLBAND;
+ st->variable_HP_smth2_Q15 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
+ }
+ break;
+ case OPUS_SET_FORCE_MODE_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if ((value < MODE_SILK_ONLY || value > MODE_CELT_ONLY) && value != OPUS_AUTO)
+ {
+ goto bad_arg;
+ }
+ st->user_forced_mode = value;
+ }
+ break;
+ case OPUS_SET_LFE_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ st->lfe = value;
+ ret = celt_encoder_ctl(celt_enc, OPUS_SET_LFE(value));
+ }
+ break;
+ case OPUS_SET_ENERGY_MASK_REQUEST:
+ {
+ opus_val16 *value = va_arg(ap, opus_val16*);
+ st->energy_masking = value;
+ ret = celt_encoder_ctl(celt_enc, OPUS_SET_ENERGY_MASK(value));
+ }
+ break;
+ case OPUS_GET_IN_DTX_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ if (st->silk_mode.useDTX && (st->prev_mode == MODE_SILK_ONLY || st->prev_mode == MODE_HYBRID)) {
+ /* DTX determined by Silk. */
+ silk_encoder *silk_enc = (silk_encoder*)(void *)((char*)st+st->silk_enc_offset);
+ *value = silk_enc->state_Fxx[0].sCmn.noSpeechCounter >= NB_SPEECH_FRAMES_BEFORE_DTX;
+ /* Stereo: check second channel unless only the middle channel was encoded. */
+ if(*value == 1 && st->silk_mode.nChannelsInternal == 2 && silk_enc->prev_decode_only_middle == 0) {
+ *value = silk_enc->state_Fxx[1].sCmn.noSpeechCounter >= NB_SPEECH_FRAMES_BEFORE_DTX;
+ }
+ }
+#ifndef DISABLE_FLOAT_API
+ else if (st->use_dtx) {
+ /* DTX determined by Opus. */
+ *value = st->nb_no_activity_ms_Q1 >= NB_SPEECH_FRAMES_BEFORE_DTX*20*2;
+ }
+#endif
+ else {
+ *value = 0;
+ }
+ }
+ break;
+ case CELT_GET_MODE_REQUEST:
+ {
+ const CELTMode ** value = va_arg(ap, const CELTMode**);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ ret = celt_encoder_ctl(celt_enc, CELT_GET_MODE(value));
+ }
+ break;
+ default:
+ /* fprintf(stderr, "unknown opus_encoder_ctl() request: %d", request);*/
+ ret = OPUS_UNIMPLEMENTED;
+ break;
+ }
+ va_end(ap);
+ return ret;
+bad_arg:
+ va_end(ap);
+ return OPUS_BAD_ARG;
+}
+
+void opus_encoder_destroy(OpusEncoder *st)
+{
+ opus_free(st);
+}
diff --git a/media/libopus/src/opus_multistream.c b/media/libopus/src/opus_multistream.c
new file mode 100644
index 0000000000..09c3639b7f
--- /dev/null
+++ b/media/libopus/src/opus_multistream.c
@@ -0,0 +1,92 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "opus_multistream.h"
+#include "opus.h"
+#include "opus_private.h"
+#include "stack_alloc.h"
+#include <stdarg.h>
+#include "float_cast.h"
+#include "os_support.h"
+
+
+int validate_layout(const ChannelLayout *layout)
+{
+ int i, max_channel;
+
+ max_channel = layout->nb_streams+layout->nb_coupled_streams;
+ if (max_channel>255)
+ return 0;
+ for (i=0;i<layout->nb_channels;i++)
+ {
+ if (layout->mapping[i] >= max_channel && layout->mapping[i] != 255)
+ return 0;
+ }
+ return 1;
+}
+
+
+int get_left_channel(const ChannelLayout *layout, int stream_id, int prev)
+{
+ int i;
+ i = (prev<0) ? 0 : prev+1;
+ for (;i<layout->nb_channels;i++)
+ {
+ if (layout->mapping[i]==stream_id*2)
+ return i;
+ }
+ return -1;
+}
+
+int get_right_channel(const ChannelLayout *layout, int stream_id, int prev)
+{
+ int i;
+ i = (prev<0) ? 0 : prev+1;
+ for (;i<layout->nb_channels;i++)
+ {
+ if (layout->mapping[i]==stream_id*2+1)
+ return i;
+ }
+ return -1;
+}
+
+int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev)
+{
+ int i;
+ i = (prev<0) ? 0 : prev+1;
+ for (;i<layout->nb_channels;i++)
+ {
+ if (layout->mapping[i]==stream_id+layout->nb_coupled_streams)
+ return i;
+ }
+ return -1;
+}
+
diff --git a/media/libopus/src/opus_multistream_decoder.c b/media/libopus/src/opus_multistream_decoder.c
new file mode 100644
index 0000000000..a2837c3549
--- /dev/null
+++ b/media/libopus/src/opus_multistream_decoder.c
@@ -0,0 +1,552 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "opus_multistream.h"
+#include "opus.h"
+#include "opus_private.h"
+#include "stack_alloc.h"
+#include <stdarg.h>
+#include "float_cast.h"
+#include "os_support.h"
+
+/* DECODER */
+
+#if defined(ENABLE_HARDENING) || defined(ENABLE_ASSERTIONS)
+static void validate_ms_decoder(OpusMSDecoder *st)
+{
+ validate_layout(&st->layout);
+}
+#define VALIDATE_MS_DECODER(st) validate_ms_decoder(st)
+#else
+#define VALIDATE_MS_DECODER(st)
+#endif
+
+
+opus_int32 opus_multistream_decoder_get_size(int nb_streams, int nb_coupled_streams)
+{
+ int coupled_size;
+ int mono_size;
+
+ if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0;
+ coupled_size = opus_decoder_get_size(2);
+ mono_size = opus_decoder_get_size(1);
+ return align(sizeof(OpusMSDecoder))
+ + nb_coupled_streams * align(coupled_size)
+ + (nb_streams-nb_coupled_streams) * align(mono_size);
+}
+
+int opus_multistream_decoder_init(
+ OpusMSDecoder *st,
+ opus_int32 Fs,
+ int channels,
+ int streams,
+ int coupled_streams,
+ const unsigned char *mapping
+)
+{
+ int coupled_size;
+ int mono_size;
+ int i, ret;
+ char *ptr;
+
+ if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
+ (streams<1) || (coupled_streams<0) || (streams>255-coupled_streams))
+ return OPUS_BAD_ARG;
+
+ st->layout.nb_channels = channels;
+ st->layout.nb_streams = streams;
+ st->layout.nb_coupled_streams = coupled_streams;
+
+ for (i=0;i<st->layout.nb_channels;i++)
+ st->layout.mapping[i] = mapping[i];
+ if (!validate_layout(&st->layout))
+ return OPUS_BAD_ARG;
+
+ ptr = (char*)st + align(sizeof(OpusMSDecoder));
+ coupled_size = opus_decoder_get_size(2);
+ mono_size = opus_decoder_get_size(1);
+
+ for (i=0;i<st->layout.nb_coupled_streams;i++)
+ {
+ ret=opus_decoder_init((OpusDecoder*)ptr, Fs, 2);
+ if(ret!=OPUS_OK)return ret;
+ ptr += align(coupled_size);
+ }
+ for (;i<st->layout.nb_streams;i++)
+ {
+ ret=opus_decoder_init((OpusDecoder*)ptr, Fs, 1);
+ if(ret!=OPUS_OK)return ret;
+ ptr += align(mono_size);
+ }
+ return OPUS_OK;
+}
+
+
+OpusMSDecoder *opus_multistream_decoder_create(
+ opus_int32 Fs,
+ int channels,
+ int streams,
+ int coupled_streams,
+ const unsigned char *mapping,
+ int *error
+)
+{
+ int ret;
+ OpusMSDecoder *st;
+ if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
+ (streams<1) || (coupled_streams<0) || (streams>255-coupled_streams))
+ {
+ if (error)
+ *error = OPUS_BAD_ARG;
+ return NULL;
+ }
+ st = (OpusMSDecoder *)opus_alloc(opus_multistream_decoder_get_size(streams, coupled_streams));
+ if (st==NULL)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ ret = opus_multistream_decoder_init(st, Fs, channels, streams, coupled_streams, mapping);
+ if (error)
+ *error = ret;
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ return st;
+}
+
+static int opus_multistream_packet_validate(const unsigned char *data,
+ opus_int32 len, int nb_streams, opus_int32 Fs)
+{
+ int s;
+ int count;
+ unsigned char toc;
+ opus_int16 size[48];
+ int samples=0;
+ opus_int32 packet_offset;
+
+ for (s=0;s<nb_streams;s++)
+ {
+ int tmp_samples;
+ if (len<=0)
+ return OPUS_INVALID_PACKET;
+ count = opus_packet_parse_impl(data, len, s!=nb_streams-1, &toc, NULL,
+ size, NULL, &packet_offset);
+ if (count<0)
+ return count;
+ tmp_samples = opus_packet_get_nb_samples(data, packet_offset, Fs);
+ if (s!=0 && samples != tmp_samples)
+ return OPUS_INVALID_PACKET;
+ samples = tmp_samples;
+ data += packet_offset;
+ len -= packet_offset;
+ }
+ return samples;
+}
+
+int opus_multistream_decode_native(
+ OpusMSDecoder *st,
+ const unsigned char *data,
+ opus_int32 len,
+ void *pcm,
+ opus_copy_channel_out_func copy_channel_out,
+ int frame_size,
+ int decode_fec,
+ int soft_clip,
+ void *user_data
+)
+{
+ opus_int32 Fs;
+ int coupled_size;
+ int mono_size;
+ int s, c;
+ char *ptr;
+ int do_plc=0;
+ VARDECL(opus_val16, buf);
+ ALLOC_STACK;
+
+ VALIDATE_MS_DECODER(st);
+ if (frame_size <= 0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ /* Limit frame_size to avoid excessive stack allocations. */
+ MUST_SUCCEED(opus_multistream_decoder_ctl(st, OPUS_GET_SAMPLE_RATE(&Fs)));
+ frame_size = IMIN(frame_size, Fs/25*3);
+ ALLOC(buf, 2*frame_size, opus_val16);
+ ptr = (char*)st + align(sizeof(OpusMSDecoder));
+ coupled_size = opus_decoder_get_size(2);
+ mono_size = opus_decoder_get_size(1);
+
+ if (len==0)
+ do_plc = 1;
+ if (len < 0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ if (!do_plc && len < 2*st->layout.nb_streams-1)
+ {
+ RESTORE_STACK;
+ return OPUS_INVALID_PACKET;
+ }
+ if (!do_plc)
+ {
+ int ret = opus_multistream_packet_validate(data, len, st->layout.nb_streams, Fs);
+ if (ret < 0)
+ {
+ RESTORE_STACK;
+ return ret;
+ } else if (ret > frame_size)
+ {
+ RESTORE_STACK;
+ return OPUS_BUFFER_TOO_SMALL;
+ }
+ }
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusDecoder *dec;
+ opus_int32 packet_offset;
+ int ret;
+
+ dec = (OpusDecoder*)ptr;
+ ptr += (s < st->layout.nb_coupled_streams) ? align(coupled_size) : align(mono_size);
+
+ if (!do_plc && len<=0)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ packet_offset = 0;
+ ret = opus_decode_native(dec, data, len, buf, frame_size, decode_fec, s!=st->layout.nb_streams-1, &packet_offset, soft_clip);
+ if (!do_plc)
+ {
+ data += packet_offset;
+ len -= packet_offset;
+ }
+ if (ret <= 0)
+ {
+ RESTORE_STACK;
+ return ret;
+ }
+ frame_size = ret;
+ if (s < st->layout.nb_coupled_streams)
+ {
+ int chan, prev;
+ prev = -1;
+ /* Copy "left" audio to the channel(s) where it belongs */
+ while ( (chan = get_left_channel(&st->layout, s, prev)) != -1)
+ {
+ (*copy_channel_out)(pcm, st->layout.nb_channels, chan,
+ buf, 2, frame_size, user_data);
+ prev = chan;
+ }
+ prev = -1;
+ /* Copy "right" audio to the channel(s) where it belongs */
+ while ( (chan = get_right_channel(&st->layout, s, prev)) != -1)
+ {
+ (*copy_channel_out)(pcm, st->layout.nb_channels, chan,
+ buf+1, 2, frame_size, user_data);
+ prev = chan;
+ }
+ } else {
+ int chan, prev;
+ prev = -1;
+ /* Copy audio to the channel(s) where it belongs */
+ while ( (chan = get_mono_channel(&st->layout, s, prev)) != -1)
+ {
+ (*copy_channel_out)(pcm, st->layout.nb_channels, chan,
+ buf, 1, frame_size, user_data);
+ prev = chan;
+ }
+ }
+ }
+ /* Handle muted channels */
+ for (c=0;c<st->layout.nb_channels;c++)
+ {
+ if (st->layout.mapping[c] == 255)
+ {
+ (*copy_channel_out)(pcm, st->layout.nb_channels, c,
+ NULL, 0, frame_size, user_data);
+ }
+ }
+ RESTORE_STACK;
+ return frame_size;
+}
+
+#if !defined(DISABLE_FLOAT_API)
+static void opus_copy_channel_out_float(
+ void *dst,
+ int dst_stride,
+ int dst_channel,
+ const opus_val16 *src,
+ int src_stride,
+ int frame_size,
+ void *user_data
+)
+{
+ float *float_dst;
+ opus_int32 i;
+ (void)user_data;
+ float_dst = (float*)dst;
+ if (src != NULL)
+ {
+ for (i=0;i<frame_size;i++)
+#if defined(FIXED_POINT)
+ float_dst[i*dst_stride+dst_channel] = (1/32768.f)*src[i*src_stride];
+#else
+ float_dst[i*dst_stride+dst_channel] = src[i*src_stride];
+#endif
+ }
+ else
+ {
+ for (i=0;i<frame_size;i++)
+ float_dst[i*dst_stride+dst_channel] = 0;
+ }
+}
+#endif
+
+static void opus_copy_channel_out_short(
+ void *dst,
+ int dst_stride,
+ int dst_channel,
+ const opus_val16 *src,
+ int src_stride,
+ int frame_size,
+ void *user_data
+)
+{
+ opus_int16 *short_dst;
+ opus_int32 i;
+ (void)user_data;
+ short_dst = (opus_int16*)dst;
+ if (src != NULL)
+ {
+ for (i=0;i<frame_size;i++)
+#if defined(FIXED_POINT)
+ short_dst[i*dst_stride+dst_channel] = src[i*src_stride];
+#else
+ short_dst[i*dst_stride+dst_channel] = FLOAT2INT16(src[i*src_stride]);
+#endif
+ }
+ else
+ {
+ for (i=0;i<frame_size;i++)
+ short_dst[i*dst_stride+dst_channel] = 0;
+ }
+}
+
+
+
+#ifdef FIXED_POINT
+int opus_multistream_decode(
+ OpusMSDecoder *st,
+ const unsigned char *data,
+ opus_int32 len,
+ opus_int16 *pcm,
+ int frame_size,
+ int decode_fec
+)
+{
+ return opus_multistream_decode_native(st, data, len,
+ pcm, opus_copy_channel_out_short, frame_size, decode_fec, 0, NULL);
+}
+
+#ifndef DISABLE_FLOAT_API
+int opus_multistream_decode_float(OpusMSDecoder *st, const unsigned char *data,
+ opus_int32 len, float *pcm, int frame_size, int decode_fec)
+{
+ return opus_multistream_decode_native(st, data, len,
+ pcm, opus_copy_channel_out_float, frame_size, decode_fec, 0, NULL);
+}
+#endif
+
+#else
+
+int opus_multistream_decode(OpusMSDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_int16 *pcm, int frame_size, int decode_fec)
+{
+ return opus_multistream_decode_native(st, data, len,
+ pcm, opus_copy_channel_out_short, frame_size, decode_fec, 1, NULL);
+}
+
+int opus_multistream_decode_float(
+ OpusMSDecoder *st,
+ const unsigned char *data,
+ opus_int32 len,
+ opus_val16 *pcm,
+ int frame_size,
+ int decode_fec
+)
+{
+ return opus_multistream_decode_native(st, data, len,
+ pcm, opus_copy_channel_out_float, frame_size, decode_fec, 0, NULL);
+}
+#endif
+
+int opus_multistream_decoder_ctl_va_list(OpusMSDecoder *st, int request,
+ va_list ap)
+{
+ int coupled_size, mono_size;
+ char *ptr;
+ int ret = OPUS_OK;
+
+ coupled_size = opus_decoder_get_size(2);
+ mono_size = opus_decoder_get_size(1);
+ ptr = (char*)st + align(sizeof(OpusMSDecoder));
+ switch (request)
+ {
+ case OPUS_GET_BANDWIDTH_REQUEST:
+ case OPUS_GET_SAMPLE_RATE_REQUEST:
+ case OPUS_GET_GAIN_REQUEST:
+ case OPUS_GET_LAST_PACKET_DURATION_REQUEST:
+ case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ OpusDecoder *dec;
+ /* For int32* GET params, just query the first stream */
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ dec = (OpusDecoder*)ptr;
+ ret = opus_decoder_ctl(dec, request, value);
+ }
+ break;
+ case OPUS_GET_FINAL_RANGE_REQUEST:
+ {
+ int s;
+ opus_uint32 *value = va_arg(ap, opus_uint32*);
+ opus_uint32 tmp;
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = 0;
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusDecoder *dec;
+ dec = (OpusDecoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ ret = opus_decoder_ctl(dec, request, &tmp);
+ if (ret != OPUS_OK) break;
+ *value ^= tmp;
+ }
+ }
+ break;
+ case OPUS_RESET_STATE:
+ {
+ int s;
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusDecoder *dec;
+
+ dec = (OpusDecoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ ret = opus_decoder_ctl(dec, OPUS_RESET_STATE);
+ if (ret != OPUS_OK)
+ break;
+ }
+ }
+ break;
+ case OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST:
+ {
+ int s;
+ opus_int32 stream_id;
+ OpusDecoder **value;
+ stream_id = va_arg(ap, opus_int32);
+ if (stream_id<0 || stream_id >= st->layout.nb_streams)
+ goto bad_arg;
+ value = va_arg(ap, OpusDecoder**);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ for (s=0;s<stream_id;s++)
+ {
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ }
+ *value = (OpusDecoder*)ptr;
+ }
+ break;
+ case OPUS_SET_GAIN_REQUEST:
+ case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ int s;
+ /* This works for int32 params */
+ opus_int32 value = va_arg(ap, opus_int32);
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusDecoder *dec;
+
+ dec = (OpusDecoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ ret = opus_decoder_ctl(dec, request, value);
+ if (ret != OPUS_OK)
+ break;
+ }
+ }
+ break;
+ default:
+ ret = OPUS_UNIMPLEMENTED;
+ break;
+ }
+ return ret;
+bad_arg:
+ return OPUS_BAD_ARG;
+}
+
+int opus_multistream_decoder_ctl(OpusMSDecoder *st, int request, ...)
+{
+ int ret;
+ va_list ap;
+ va_start(ap, request);
+ ret = opus_multistream_decoder_ctl_va_list(st, request, ap);
+ va_end(ap);
+ return ret;
+}
+
+void opus_multistream_decoder_destroy(OpusMSDecoder *st)
+{
+ opus_free(st);
+}
diff --git a/media/libopus/src/opus_multistream_encoder.c b/media/libopus/src/opus_multistream_encoder.c
new file mode 100644
index 0000000000..213e3eb2c2
--- /dev/null
+++ b/media/libopus/src/opus_multistream_encoder.c
@@ -0,0 +1,1329 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "opus_multistream.h"
+#include "opus.h"
+#include "opus_private.h"
+#include "stack_alloc.h"
+#include <stdarg.h>
+#include "float_cast.h"
+#include "os_support.h"
+#include "mathops.h"
+#include "mdct.h"
+#include "modes.h"
+#include "bands.h"
+#include "quant_bands.h"
+#include "pitch.h"
+
+typedef struct {
+ int nb_streams;
+ int nb_coupled_streams;
+ unsigned char mapping[8];
+} VorbisLayout;
+
+/* Index is nb_channel-1*/
+static const VorbisLayout vorbis_mappings[8] = {
+ {1, 0, {0}}, /* 1: mono */
+ {1, 1, {0, 1}}, /* 2: stereo */
+ {2, 1, {0, 2, 1}}, /* 3: 1-d surround */
+ {2, 2, {0, 1, 2, 3}}, /* 4: quadraphonic surround */
+ {3, 2, {0, 4, 1, 2, 3}}, /* 5: 5-channel surround */
+ {4, 2, {0, 4, 1, 2, 3, 5}}, /* 6: 5.1 surround */
+ {4, 3, {0, 4, 1, 2, 3, 5, 6}}, /* 7: 6.1 surround */
+ {5, 3, {0, 6, 1, 2, 3, 4, 5, 7}}, /* 8: 7.1 surround */
+};
+
+static opus_val32 *ms_get_preemph_mem(OpusMSEncoder *st)
+{
+ int s;
+ char *ptr;
+ int coupled_size, mono_size;
+
+ coupled_size = opus_encoder_get_size(2);
+ mono_size = opus_encoder_get_size(1);
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ }
+ /* void* cast avoids clang -Wcast-align warning */
+ return (opus_val32*)(void*)(ptr+st->layout.nb_channels*120*sizeof(opus_val32));
+}
+
+static opus_val32 *ms_get_window_mem(OpusMSEncoder *st)
+{
+ int s;
+ char *ptr;
+ int coupled_size, mono_size;
+
+ coupled_size = opus_encoder_get_size(2);
+ mono_size = opus_encoder_get_size(1);
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ }
+ /* void* cast avoids clang -Wcast-align warning */
+ return (opus_val32*)(void*)ptr;
+}
+
+static int validate_ambisonics(int nb_channels, int *nb_streams, int *nb_coupled_streams)
+{
+ int order_plus_one;
+ int acn_channels;
+ int nondiegetic_channels;
+
+ if (nb_channels < 1 || nb_channels > 227)
+ return 0;
+
+ order_plus_one = isqrt32(nb_channels);
+ acn_channels = order_plus_one * order_plus_one;
+ nondiegetic_channels = nb_channels - acn_channels;
+
+ if (nondiegetic_channels != 0 && nondiegetic_channels != 2)
+ return 0;
+
+ if (nb_streams)
+ *nb_streams = acn_channels + (nondiegetic_channels != 0);
+ if (nb_coupled_streams)
+ *nb_coupled_streams = nondiegetic_channels != 0;
+ return 1;
+}
+
+static int validate_encoder_layout(const ChannelLayout *layout)
+{
+ int s;
+ for (s=0;s<layout->nb_streams;s++)
+ {
+ if (s < layout->nb_coupled_streams)
+ {
+ if (get_left_channel(layout, s, -1)==-1)
+ return 0;
+ if (get_right_channel(layout, s, -1)==-1)
+ return 0;
+ } else {
+ if (get_mono_channel(layout, s, -1)==-1)
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static void channel_pos(int channels, int pos[8])
+{
+ /* Position in the mix: 0 don't mix, 1: left, 2: center, 3:right */
+ if (channels==4)
+ {
+ pos[0]=1;
+ pos[1]=3;
+ pos[2]=1;
+ pos[3]=3;
+ } else if (channels==3||channels==5||channels==6)
+ {
+ pos[0]=1;
+ pos[1]=2;
+ pos[2]=3;
+ pos[3]=1;
+ pos[4]=3;
+ pos[5]=0;
+ } else if (channels==7)
+ {
+ pos[0]=1;
+ pos[1]=2;
+ pos[2]=3;
+ pos[3]=1;
+ pos[4]=3;
+ pos[5]=2;
+ pos[6]=0;
+ } else if (channels==8)
+ {
+ pos[0]=1;
+ pos[1]=2;
+ pos[2]=3;
+ pos[3]=1;
+ pos[4]=3;
+ pos[5]=1;
+ pos[6]=3;
+ pos[7]=0;
+ }
+}
+
+#if 1
+/* Computes a rough approximation of log2(2^a + 2^b) */
+static opus_val16 logSum(opus_val16 a, opus_val16 b)
+{
+ opus_val16 max;
+ opus_val32 diff;
+ opus_val16 frac;
+ static const opus_val16 diff_table[17] = {
+ QCONST16(0.5000000f, DB_SHIFT), QCONST16(0.2924813f, DB_SHIFT), QCONST16(0.1609640f, DB_SHIFT), QCONST16(0.0849625f, DB_SHIFT),
+ QCONST16(0.0437314f, DB_SHIFT), QCONST16(0.0221971f, DB_SHIFT), QCONST16(0.0111839f, DB_SHIFT), QCONST16(0.0056136f, DB_SHIFT),
+ QCONST16(0.0028123f, DB_SHIFT)
+ };
+ int low;
+ if (a>b)
+ {
+ max = a;
+ diff = SUB32(EXTEND32(a),EXTEND32(b));
+ } else {
+ max = b;
+ diff = SUB32(EXTEND32(b),EXTEND32(a));
+ }
+ if (!(diff < QCONST16(8.f, DB_SHIFT))) /* inverted to catch NaNs */
+ return max;
+#ifdef FIXED_POINT
+ low = SHR32(diff, DB_SHIFT-1);
+ frac = SHL16(diff - SHL16(low, DB_SHIFT-1), 16-DB_SHIFT);
+#else
+ low = (int)floor(2*diff);
+ frac = 2*diff - low;
+#endif
+ return max + diff_table[low] + MULT16_16_Q15(frac, SUB16(diff_table[low+1], diff_table[low]));
+}
+#else
+opus_val16 logSum(opus_val16 a, opus_val16 b)
+{
+ return log2(pow(4, a)+ pow(4, b))/2;
+}
+#endif
+
+void surround_analysis(const CELTMode *celt_mode, const void *pcm, opus_val16 *bandLogE, opus_val32 *mem, opus_val32 *preemph_mem,
+ int len, int overlap, int channels, int rate, opus_copy_channel_in_func copy_channel_in, int arch
+)
+{
+ int c;
+ int i;
+ int LM;
+ int pos[8] = {0};
+ int upsample;
+ int frame_size;
+ int freq_size;
+ opus_val16 channel_offset;
+ opus_val32 bandE[21];
+ opus_val16 maskLogE[3][21];
+ VARDECL(opus_val32, in);
+ VARDECL(opus_val16, x);
+ VARDECL(opus_val32, freq);
+ SAVE_STACK;
+
+ upsample = resampling_factor(rate);
+ frame_size = len*upsample;
+ freq_size = IMIN(960, frame_size);
+
+ /* LM = log2(frame_size / 120) */
+ for (LM=0;LM<celt_mode->maxLM;LM++)
+ if (celt_mode->shortMdctSize<<LM==frame_size)
+ break;
+
+ ALLOC(in, frame_size+overlap, opus_val32);
+ ALLOC(x, len, opus_val16);
+ ALLOC(freq, freq_size, opus_val32);
+
+ channel_pos(channels, pos);
+
+ for (c=0;c<3;c++)
+ for (i=0;i<21;i++)
+ maskLogE[c][i] = -QCONST16(28.f, DB_SHIFT);
+
+ for (c=0;c<channels;c++)
+ {
+ int frame;
+ int nb_frames = frame_size/freq_size;
+ celt_assert(nb_frames*freq_size == frame_size);
+ OPUS_COPY(in, mem+c*overlap, overlap);
+ (*copy_channel_in)(x, 1, pcm, channels, c, len, NULL);
+ celt_preemphasis(x, in+overlap, frame_size, 1, upsample, celt_mode->preemph, preemph_mem+c, 0);
+#ifndef FIXED_POINT
+ {
+ opus_val32 sum;
+ sum = celt_inner_prod(in, in, frame_size+overlap, 0);
+ /* This should filter out both NaNs and ridiculous signals that could
+ cause NaNs further down. */
+ if (!(sum < 1e18f) || celt_isnan(sum))
+ {
+ OPUS_CLEAR(in, frame_size+overlap);
+ preemph_mem[c] = 0;
+ }
+ }
+#endif
+ OPUS_CLEAR(bandE, 21);
+ for (frame=0;frame<nb_frames;frame++)
+ {
+ opus_val32 tmpE[21];
+ clt_mdct_forward(&celt_mode->mdct, in+960*frame, freq, celt_mode->window,
+ overlap, celt_mode->maxLM-LM, 1, arch);
+ if (upsample != 1)
+ {
+ int bound = freq_size/upsample;
+ for (i=0;i<bound;i++)
+ freq[i] *= upsample;
+ for (;i<freq_size;i++)
+ freq[i] = 0;
+ }
+
+ compute_band_energies(celt_mode, freq, tmpE, 21, 1, LM, arch);
+ /* If we have multiple frames, take the max energy. */
+ for (i=0;i<21;i++)
+ bandE[i] = MAX32(bandE[i], tmpE[i]);
+ }
+ amp2Log2(celt_mode, 21, 21, bandE, bandLogE+21*c, 1);
+ /* Apply spreading function with -6 dB/band going up and -12 dB/band going down. */
+ for (i=1;i<21;i++)
+ bandLogE[21*c+i] = MAX16(bandLogE[21*c+i], bandLogE[21*c+i-1]-QCONST16(1.f, DB_SHIFT));
+ for (i=19;i>=0;i--)
+ bandLogE[21*c+i] = MAX16(bandLogE[21*c+i], bandLogE[21*c+i+1]-QCONST16(2.f, DB_SHIFT));
+ if (pos[c]==1)
+ {
+ for (i=0;i<21;i++)
+ maskLogE[0][i] = logSum(maskLogE[0][i], bandLogE[21*c+i]);
+ } else if (pos[c]==3)
+ {
+ for (i=0;i<21;i++)
+ maskLogE[2][i] = logSum(maskLogE[2][i], bandLogE[21*c+i]);
+ } else if (pos[c]==2)
+ {
+ for (i=0;i<21;i++)
+ {
+ maskLogE[0][i] = logSum(maskLogE[0][i], bandLogE[21*c+i]-QCONST16(.5f, DB_SHIFT));
+ maskLogE[2][i] = logSum(maskLogE[2][i], bandLogE[21*c+i]-QCONST16(.5f, DB_SHIFT));
+ }
+ }
+#if 0
+ for (i=0;i<21;i++)
+ printf("%f ", bandLogE[21*c+i]);
+ float sum=0;
+ for (i=0;i<21;i++)
+ sum += bandLogE[21*c+i];
+ printf("%f ", sum/21);
+#endif
+ OPUS_COPY(mem+c*overlap, in+frame_size, overlap);
+ }
+ for (i=0;i<21;i++)
+ maskLogE[1][i] = MIN32(maskLogE[0][i],maskLogE[2][i]);
+ channel_offset = HALF16(celt_log2(QCONST32(2.f,14)/(channels-1)));
+ for (c=0;c<3;c++)
+ for (i=0;i<21;i++)
+ maskLogE[c][i] += channel_offset;
+#if 0
+ for (c=0;c<3;c++)
+ {
+ for (i=0;i<21;i++)
+ printf("%f ", maskLogE[c][i]);
+ }
+#endif
+ for (c=0;c<channels;c++)
+ {
+ opus_val16 *mask;
+ if (pos[c]!=0)
+ {
+ mask = &maskLogE[pos[c]-1][0];
+ for (i=0;i<21;i++)
+ bandLogE[21*c+i] = bandLogE[21*c+i] - mask[i];
+ } else {
+ for (i=0;i<21;i++)
+ bandLogE[21*c+i] = 0;
+ }
+#if 0
+ for (i=0;i<21;i++)
+ printf("%f ", bandLogE[21*c+i]);
+ printf("\n");
+#endif
+#if 0
+ float sum=0;
+ for (i=0;i<21;i++)
+ sum += bandLogE[21*c+i];
+ printf("%f ", sum/(float)QCONST32(21.f, DB_SHIFT));
+ printf("\n");
+#endif
+ }
+ RESTORE_STACK;
+}
+
+opus_int32 opus_multistream_encoder_get_size(int nb_streams, int nb_coupled_streams)
+{
+ int coupled_size;
+ int mono_size;
+
+ if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0;
+ coupled_size = opus_encoder_get_size(2);
+ mono_size = opus_encoder_get_size(1);
+ return align(sizeof(OpusMSEncoder))
+ + nb_coupled_streams * align(coupled_size)
+ + (nb_streams-nb_coupled_streams) * align(mono_size);
+}
+
+opus_int32 opus_multistream_surround_encoder_get_size(int channels, int mapping_family)
+{
+ int nb_streams;
+ int nb_coupled_streams;
+ opus_int32 size;
+
+ if (mapping_family==0)
+ {
+ if (channels==1)
+ {
+ nb_streams=1;
+ nb_coupled_streams=0;
+ } else if (channels==2)
+ {
+ nb_streams=1;
+ nb_coupled_streams=1;
+ } else
+ return 0;
+ } else if (mapping_family==1 && channels<=8 && channels>=1)
+ {
+ nb_streams=vorbis_mappings[channels-1].nb_streams;
+ nb_coupled_streams=vorbis_mappings[channels-1].nb_coupled_streams;
+ } else if (mapping_family==255)
+ {
+ nb_streams=channels;
+ nb_coupled_streams=0;
+ } else if (mapping_family==2)
+ {
+ if (!validate_ambisonics(channels, &nb_streams, &nb_coupled_streams))
+ return 0;
+ } else
+ return 0;
+ size = opus_multistream_encoder_get_size(nb_streams, nb_coupled_streams);
+ if (channels>2)
+ {
+ size += channels*(120*sizeof(opus_val32) + sizeof(opus_val32));
+ }
+ return size;
+}
+
+static int opus_multistream_encoder_init_impl(
+ OpusMSEncoder *st,
+ opus_int32 Fs,
+ int channels,
+ int streams,
+ int coupled_streams,
+ const unsigned char *mapping,
+ int application,
+ MappingType mapping_type
+)
+{
+ int coupled_size;
+ int mono_size;
+ int i, ret;
+ char *ptr;
+
+ if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
+ (streams<1) || (coupled_streams<0) || (streams>255-coupled_streams) ||
+ (streams+coupled_streams>channels))
+ return OPUS_BAD_ARG;
+
+ st->arch = opus_select_arch();
+ st->layout.nb_channels = channels;
+ st->layout.nb_streams = streams;
+ st->layout.nb_coupled_streams = coupled_streams;
+ if (mapping_type != MAPPING_TYPE_SURROUND)
+ st->lfe_stream = -1;
+ st->bitrate_bps = OPUS_AUTO;
+ st->application = application;
+ st->variable_duration = OPUS_FRAMESIZE_ARG;
+ for (i=0;i<st->layout.nb_channels;i++)
+ st->layout.mapping[i] = mapping[i];
+ if (!validate_layout(&st->layout))
+ return OPUS_BAD_ARG;
+ if (!validate_encoder_layout(&st->layout))
+ return OPUS_BAD_ARG;
+ if (mapping_type == MAPPING_TYPE_AMBISONICS &&
+ !validate_ambisonics(st->layout.nb_channels, NULL, NULL))
+ return OPUS_BAD_ARG;
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ coupled_size = opus_encoder_get_size(2);
+ mono_size = opus_encoder_get_size(1);
+
+ for (i=0;i<st->layout.nb_coupled_streams;i++)
+ {
+ ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 2, application);
+ if(ret!=OPUS_OK)return ret;
+ if (i==st->lfe_stream)
+ opus_encoder_ctl((OpusEncoder*)ptr, OPUS_SET_LFE(1));
+ ptr += align(coupled_size);
+ }
+ for (;i<st->layout.nb_streams;i++)
+ {
+ ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 1, application);
+ if (i==st->lfe_stream)
+ opus_encoder_ctl((OpusEncoder*)ptr, OPUS_SET_LFE(1));
+ if(ret!=OPUS_OK)return ret;
+ ptr += align(mono_size);
+ }
+ if (mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ OPUS_CLEAR(ms_get_preemph_mem(st), channels);
+ OPUS_CLEAR(ms_get_window_mem(st), channels*120);
+ }
+ st->mapping_type = mapping_type;
+ return OPUS_OK;
+}
+
+int opus_multistream_encoder_init(
+ OpusMSEncoder *st,
+ opus_int32 Fs,
+ int channels,
+ int streams,
+ int coupled_streams,
+ const unsigned char *mapping,
+ int application
+)
+{
+ return opus_multistream_encoder_init_impl(st, Fs, channels, streams,
+ coupled_streams, mapping,
+ application, MAPPING_TYPE_NONE);
+}
+
+int opus_multistream_surround_encoder_init(
+ OpusMSEncoder *st,
+ opus_int32 Fs,
+ int channels,
+ int mapping_family,
+ int *streams,
+ int *coupled_streams,
+ unsigned char *mapping,
+ int application
+)
+{
+ MappingType mapping_type;
+
+ if ((channels>255) || (channels<1))
+ return OPUS_BAD_ARG;
+ st->lfe_stream = -1;
+ if (mapping_family==0)
+ {
+ if (channels==1)
+ {
+ *streams=1;
+ *coupled_streams=0;
+ mapping[0]=0;
+ } else if (channels==2)
+ {
+ *streams=1;
+ *coupled_streams=1;
+ mapping[0]=0;
+ mapping[1]=1;
+ } else
+ return OPUS_UNIMPLEMENTED;
+ } else if (mapping_family==1 && channels<=8 && channels>=1)
+ {
+ int i;
+ *streams=vorbis_mappings[channels-1].nb_streams;
+ *coupled_streams=vorbis_mappings[channels-1].nb_coupled_streams;
+ for (i=0;i<channels;i++)
+ mapping[i] = vorbis_mappings[channels-1].mapping[i];
+ if (channels>=6)
+ st->lfe_stream = *streams-1;
+ } else if (mapping_family==255)
+ {
+ int i;
+ *streams=channels;
+ *coupled_streams=0;
+ for(i=0;i<channels;i++)
+ mapping[i] = i;
+ } else if (mapping_family==2)
+ {
+ int i;
+ if (!validate_ambisonics(channels, streams, coupled_streams))
+ return OPUS_BAD_ARG;
+ for(i = 0; i < (*streams - *coupled_streams); i++)
+ mapping[i] = i + (*coupled_streams * 2);
+ for(i = 0; i < *coupled_streams * 2; i++)
+ mapping[i + (*streams - *coupled_streams)] = i;
+ } else
+ return OPUS_UNIMPLEMENTED;
+
+ if (channels>2 && mapping_family==1) {
+ mapping_type = MAPPING_TYPE_SURROUND;
+ } else if (mapping_family==2)
+ {
+ mapping_type = MAPPING_TYPE_AMBISONICS;
+ } else
+ {
+ mapping_type = MAPPING_TYPE_NONE;
+ }
+ return opus_multistream_encoder_init_impl(st, Fs, channels, *streams,
+ *coupled_streams, mapping,
+ application, mapping_type);
+}
+
+OpusMSEncoder *opus_multistream_encoder_create(
+ opus_int32 Fs,
+ int channels,
+ int streams,
+ int coupled_streams,
+ const unsigned char *mapping,
+ int application,
+ int *error
+)
+{
+ int ret;
+ OpusMSEncoder *st;
+ if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
+ (streams<1) || (coupled_streams<0) || (streams>255-coupled_streams) ||
+ (streams+coupled_streams>channels))
+ {
+ if (error)
+ *error = OPUS_BAD_ARG;
+ return NULL;
+ }
+ st = (OpusMSEncoder *)opus_alloc(opus_multistream_encoder_get_size(streams, coupled_streams));
+ if (st==NULL)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ ret = opus_multistream_encoder_init(st, Fs, channels, streams, coupled_streams, mapping, application);
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ if (error)
+ *error = ret;
+ return st;
+}
+
+OpusMSEncoder *opus_multistream_surround_encoder_create(
+ opus_int32 Fs,
+ int channels,
+ int mapping_family,
+ int *streams,
+ int *coupled_streams,
+ unsigned char *mapping,
+ int application,
+ int *error
+)
+{
+ int ret;
+ opus_int32 size;
+ OpusMSEncoder *st;
+ if ((channels>255) || (channels<1))
+ {
+ if (error)
+ *error = OPUS_BAD_ARG;
+ return NULL;
+ }
+ size = opus_multistream_surround_encoder_get_size(channels, mapping_family);
+ if (!size)
+ {
+ if (error)
+ *error = OPUS_UNIMPLEMENTED;
+ return NULL;
+ }
+ st = (OpusMSEncoder *)opus_alloc(size);
+ if (st==NULL)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ ret = opus_multistream_surround_encoder_init(st, Fs, channels, mapping_family, streams, coupled_streams, mapping, application);
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ if (error)
+ *error = ret;
+ return st;
+}
+
+static void surround_rate_allocation(
+ OpusMSEncoder *st,
+ opus_int32 *rate,
+ int frame_size,
+ opus_int32 Fs
+ )
+{
+ int i;
+ opus_int32 channel_rate;
+ int stream_offset;
+ int lfe_offset;
+ int coupled_ratio; /* Q8 */
+ int lfe_ratio; /* Q8 */
+ int nb_lfe;
+ int nb_uncoupled;
+ int nb_coupled;
+ int nb_normal;
+ opus_int32 channel_offset;
+ opus_int32 bitrate;
+ int total;
+
+ nb_lfe = (st->lfe_stream!=-1);
+ nb_coupled = st->layout.nb_coupled_streams;
+ nb_uncoupled = st->layout.nb_streams-nb_coupled-nb_lfe;
+ nb_normal = 2*nb_coupled + nb_uncoupled;
+
+ /* Give each non-LFE channel enough bits per channel for coding band energy. */
+ channel_offset = 40*IMAX(50, Fs/frame_size);
+
+ if (st->bitrate_bps==OPUS_AUTO)
+ {
+ bitrate = nb_normal*(channel_offset + Fs + 10000) + 8000*nb_lfe;
+ } else if (st->bitrate_bps==OPUS_BITRATE_MAX)
+ {
+ bitrate = nb_normal*300000 + nb_lfe*128000;
+ } else {
+ bitrate = st->bitrate_bps;
+ }
+
+ /* Give LFE some basic stream_channel allocation but never exceed 1/20 of the
+ total rate for the non-energy part to avoid problems at really low rate. */
+ lfe_offset = IMIN(bitrate/20, 3000) + 15*IMAX(50, Fs/frame_size);
+
+ /* We give each stream (coupled or uncoupled) a starting bitrate.
+ This models the main saving of coupled channels over uncoupled. */
+ stream_offset = (bitrate - channel_offset*nb_normal - lfe_offset*nb_lfe)/nb_normal/2;
+ stream_offset = IMAX(0, IMIN(20000, stream_offset));
+
+ /* Coupled streams get twice the mono rate after the offset is allocated. */
+ coupled_ratio = 512;
+ /* Should depend on the bitrate, for now we assume LFE gets 1/8 the bits of mono */
+ lfe_ratio = 32;
+
+ total = (nb_uncoupled<<8) /* mono */
+ + coupled_ratio*nb_coupled /* stereo */
+ + nb_lfe*lfe_ratio;
+ channel_rate = 256*(opus_int64)(bitrate - lfe_offset*nb_lfe - stream_offset*(nb_coupled+nb_uncoupled) - channel_offset*nb_normal)/total;
+
+ for (i=0;i<st->layout.nb_streams;i++)
+ {
+ if (i<st->layout.nb_coupled_streams)
+ rate[i] = 2*channel_offset + IMAX(0, stream_offset+(channel_rate*coupled_ratio>>8));
+ else if (i!=st->lfe_stream)
+ rate[i] = channel_offset + IMAX(0, stream_offset + channel_rate);
+ else
+ rate[i] = IMAX(0, lfe_offset+(channel_rate*lfe_ratio>>8));
+ }
+}
+
+static void ambisonics_rate_allocation(
+ OpusMSEncoder *st,
+ opus_int32 *rate,
+ int frame_size,
+ opus_int32 Fs
+ )
+{
+ int i;
+ opus_int32 total_rate;
+ opus_int32 per_stream_rate;
+
+ const int nb_channels = st->layout.nb_streams + st->layout.nb_coupled_streams;
+
+ if (st->bitrate_bps==OPUS_AUTO)
+ {
+ total_rate = (st->layout.nb_coupled_streams + st->layout.nb_streams) *
+ (Fs+60*Fs/frame_size) + st->layout.nb_streams * (opus_int32)15000;
+ } else if (st->bitrate_bps==OPUS_BITRATE_MAX)
+ {
+ total_rate = nb_channels * 320000;
+ } else
+ {
+ total_rate = st->bitrate_bps;
+ }
+
+ /* Allocate equal number of bits to Ambisonic (uncoupled) and non-diegetic
+ * (coupled) streams */
+ per_stream_rate = total_rate / st->layout.nb_streams;
+ for (i = 0; i < st->layout.nb_streams; i++)
+ {
+ rate[i] = per_stream_rate;
+ }
+}
+
+static opus_int32 rate_allocation(
+ OpusMSEncoder *st,
+ opus_int32 *rate,
+ int frame_size
+ )
+{
+ int i;
+ opus_int32 rate_sum=0;
+ opus_int32 Fs;
+ char *ptr;
+
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_SAMPLE_RATE(&Fs));
+
+ if (st->mapping_type == MAPPING_TYPE_AMBISONICS) {
+ ambisonics_rate_allocation(st, rate, frame_size, Fs);
+ } else
+ {
+ surround_rate_allocation(st, rate, frame_size, Fs);
+ }
+
+ for (i=0;i<st->layout.nb_streams;i++)
+ {
+ rate[i] = IMAX(rate[i], 500);
+ rate_sum += rate[i];
+ }
+ return rate_sum;
+}
+
+/* Max size in case the encoder decides to return six frames (6 x 20 ms = 120 ms) */
+#define MS_FRAME_TMP (6*1275+12)
+int opus_multistream_encode_native
+(
+ OpusMSEncoder *st,
+ opus_copy_channel_in_func copy_channel_in,
+ const void *pcm,
+ int analysis_frame_size,
+ unsigned char *data,
+ opus_int32 max_data_bytes,
+ int lsb_depth,
+ downmix_func downmix,
+ int float_api,
+ void *user_data
+)
+{
+ opus_int32 Fs;
+ int coupled_size;
+ int mono_size;
+ int s;
+ char *ptr;
+ int tot_size;
+ VARDECL(opus_val16, buf);
+ VARDECL(opus_val16, bandSMR);
+ unsigned char tmp_data[MS_FRAME_TMP];
+ OpusRepacketizer rp;
+ opus_int32 vbr;
+ const CELTMode *celt_mode;
+ opus_int32 bitrates[256];
+ opus_val16 bandLogE[42];
+ opus_val32 *mem = NULL;
+ opus_val32 *preemph_mem=NULL;
+ int frame_size;
+ opus_int32 rate_sum;
+ opus_int32 smallest_packet;
+ ALLOC_STACK;
+
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ preemph_mem = ms_get_preemph_mem(st);
+ mem = ms_get_window_mem(st);
+ }
+
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_SAMPLE_RATE(&Fs));
+ opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_VBR(&vbr));
+ opus_encoder_ctl((OpusEncoder*)ptr, CELT_GET_MODE(&celt_mode));
+
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, Fs);
+ if (frame_size <= 0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+
+ /* Smallest packet the encoder can produce. */
+ smallest_packet = st->layout.nb_streams*2-1;
+ /* 100 ms needs an extra byte per stream for the ToC. */
+ if (Fs/frame_size == 10)
+ smallest_packet += st->layout.nb_streams;
+ if (max_data_bytes < smallest_packet)
+ {
+ RESTORE_STACK;
+ return OPUS_BUFFER_TOO_SMALL;
+ }
+ ALLOC(buf, 2*frame_size, opus_val16);
+ coupled_size = opus_encoder_get_size(2);
+ mono_size = opus_encoder_get_size(1);
+
+ ALLOC(bandSMR, 21*st->layout.nb_channels, opus_val16);
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ surround_analysis(celt_mode, pcm, bandSMR, mem, preemph_mem, frame_size, 120, st->layout.nb_channels, Fs, copy_channel_in, st->arch);
+ }
+
+ /* Compute bitrate allocation between streams (this could be a lot better) */
+ rate_sum = rate_allocation(st, bitrates, frame_size);
+
+ if (!vbr)
+ {
+ if (st->bitrate_bps == OPUS_AUTO)
+ {
+ max_data_bytes = IMIN(max_data_bytes, 3*rate_sum/(3*8*Fs/frame_size));
+ } else if (st->bitrate_bps != OPUS_BITRATE_MAX)
+ {
+ max_data_bytes = IMIN(max_data_bytes, IMAX(smallest_packet,
+ 3*st->bitrate_bps/(3*8*Fs/frame_size)));
+ }
+ }
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusEncoder *enc;
+ enc = (OpusEncoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrates[s]));
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ opus_int32 equiv_rate;
+ equiv_rate = st->bitrate_bps;
+ if (frame_size*50 < Fs)
+ equiv_rate -= 60*(Fs/frame_size - 50)*st->layout.nb_channels;
+ if (equiv_rate > 10000*st->layout.nb_channels)
+ opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_FULLBAND));
+ else if (equiv_rate > 7000*st->layout.nb_channels)
+ opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_SUPERWIDEBAND));
+ else if (equiv_rate > 5000*st->layout.nb_channels)
+ opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_WIDEBAND));
+ else
+ opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_NARROWBAND));
+ if (s < st->layout.nb_coupled_streams)
+ {
+ /* To preserve the spatial image, force stereo CELT on coupled streams */
+ opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(MODE_CELT_ONLY));
+ opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS(2));
+ }
+ }
+ else if (st->mapping_type == MAPPING_TYPE_AMBISONICS) {
+ opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(MODE_CELT_ONLY));
+ }
+ }
+
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ /* Counting ToC */
+ tot_size = 0;
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusEncoder *enc;
+ int len;
+ int curr_max;
+ int c1, c2;
+ int ret;
+
+ opus_repacketizer_init(&rp);
+ enc = (OpusEncoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ {
+ int i;
+ int left, right;
+ left = get_left_channel(&st->layout, s, -1);
+ right = get_right_channel(&st->layout, s, -1);
+ (*copy_channel_in)(buf, 2,
+ pcm, st->layout.nb_channels, left, frame_size, user_data);
+ (*copy_channel_in)(buf+1, 2,
+ pcm, st->layout.nb_channels, right, frame_size, user_data);
+ ptr += align(coupled_size);
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ for (i=0;i<21;i++)
+ {
+ bandLogE[i] = bandSMR[21*left+i];
+ bandLogE[21+i] = bandSMR[21*right+i];
+ }
+ }
+ c1 = left;
+ c2 = right;
+ } else {
+ int i;
+ int chan = get_mono_channel(&st->layout, s, -1);
+ (*copy_channel_in)(buf, 1,
+ pcm, st->layout.nb_channels, chan, frame_size, user_data);
+ ptr += align(mono_size);
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ for (i=0;i<21;i++)
+ bandLogE[i] = bandSMR[21*chan+i];
+ }
+ c1 = chan;
+ c2 = -1;
+ }
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ opus_encoder_ctl(enc, OPUS_SET_ENERGY_MASK(bandLogE));
+ /* number of bytes left (+Toc) */
+ curr_max = max_data_bytes - tot_size;
+ /* Reserve one byte for the last stream and two for the others */
+ curr_max -= IMAX(0,2*(st->layout.nb_streams-s-1)-1);
+ /* For 100 ms, reserve an extra byte per stream for the ToC */
+ if (Fs/frame_size == 10)
+ curr_max -= st->layout.nb_streams-s-1;
+ curr_max = IMIN(curr_max,MS_FRAME_TMP);
+ /* Repacketizer will add one or two bytes for self-delimited frames */
+ if (s != st->layout.nb_streams-1) curr_max -= curr_max>253 ? 2 : 1;
+ if (!vbr && s == st->layout.nb_streams-1)
+ opus_encoder_ctl(enc, OPUS_SET_BITRATE(curr_max*(8*Fs/frame_size)));
+ len = opus_encode_native(enc, buf, frame_size, tmp_data, curr_max, lsb_depth,
+ pcm, analysis_frame_size, c1, c2, st->layout.nb_channels, downmix, float_api);
+ if (len<0)
+ {
+ RESTORE_STACK;
+ return len;
+ }
+ /* We need to use the repacketizer to add the self-delimiting lengths
+ while taking into account the fact that the encoder can now return
+ more than one frame at a time (e.g. 60 ms CELT-only) */
+ ret = opus_repacketizer_cat(&rp, tmp_data, len);
+ /* If the opus_repacketizer_cat() fails, then something's seriously wrong
+ with the encoder. */
+ if (ret != OPUS_OK)
+ {
+ RESTORE_STACK;
+ return OPUS_INTERNAL_ERROR;
+ }
+ len = opus_repacketizer_out_range_impl(&rp, 0, opus_repacketizer_get_nb_frames(&rp),
+ data, max_data_bytes-tot_size, s != st->layout.nb_streams-1, !vbr && s == st->layout.nb_streams-1);
+ data += len;
+ tot_size += len;
+ }
+ /*printf("\n");*/
+ RESTORE_STACK;
+ return tot_size;
+}
+
+#if !defined(DISABLE_FLOAT_API)
+static void opus_copy_channel_in_float(
+ opus_val16 *dst,
+ int dst_stride,
+ const void *src,
+ int src_stride,
+ int src_channel,
+ int frame_size,
+ void *user_data
+)
+{
+ const float *float_src;
+ opus_int32 i;
+ (void)user_data;
+ float_src = (const float *)src;
+ for (i=0;i<frame_size;i++)
+#if defined(FIXED_POINT)
+ dst[i*dst_stride] = FLOAT2INT16(float_src[i*src_stride+src_channel]);
+#else
+ dst[i*dst_stride] = float_src[i*src_stride+src_channel];
+#endif
+}
+#endif
+
+static void opus_copy_channel_in_short(
+ opus_val16 *dst,
+ int dst_stride,
+ const void *src,
+ int src_stride,
+ int src_channel,
+ int frame_size,
+ void *user_data
+)
+{
+ const opus_int16 *short_src;
+ opus_int32 i;
+ (void)user_data;
+ short_src = (const opus_int16 *)src;
+ for (i=0;i<frame_size;i++)
+#if defined(FIXED_POINT)
+ dst[i*dst_stride] = short_src[i*src_stride+src_channel];
+#else
+ dst[i*dst_stride] = (1/32768.f)*short_src[i*src_stride+src_channel];
+#endif
+}
+
+
+#ifdef FIXED_POINT
+int opus_multistream_encode(
+ OpusMSEncoder *st,
+ const opus_val16 *pcm,
+ int frame_size,
+ unsigned char *data,
+ opus_int32 max_data_bytes
+)
+{
+ return opus_multistream_encode_native(st, opus_copy_channel_in_short,
+ pcm, frame_size, data, max_data_bytes, 16, downmix_int, 0, NULL);
+}
+
+#ifndef DISABLE_FLOAT_API
+int opus_multistream_encode_float(
+ OpusMSEncoder *st,
+ const float *pcm,
+ int frame_size,
+ unsigned char *data,
+ opus_int32 max_data_bytes
+)
+{
+ return opus_multistream_encode_native(st, opus_copy_channel_in_float,
+ pcm, frame_size, data, max_data_bytes, 16, downmix_float, 1, NULL);
+}
+#endif
+
+#else
+
+int opus_multistream_encode_float
+(
+ OpusMSEncoder *st,
+ const opus_val16 *pcm,
+ int frame_size,
+ unsigned char *data,
+ opus_int32 max_data_bytes
+)
+{
+ return opus_multistream_encode_native(st, opus_copy_channel_in_float,
+ pcm, frame_size, data, max_data_bytes, 24, downmix_float, 1, NULL);
+}
+
+int opus_multistream_encode(
+ OpusMSEncoder *st,
+ const opus_int16 *pcm,
+ int frame_size,
+ unsigned char *data,
+ opus_int32 max_data_bytes
+)
+{
+ return opus_multistream_encode_native(st, opus_copy_channel_in_short,
+ pcm, frame_size, data, max_data_bytes, 16, downmix_int, 0, NULL);
+}
+#endif
+
+int opus_multistream_encoder_ctl_va_list(OpusMSEncoder *st, int request,
+ va_list ap)
+{
+ int coupled_size, mono_size;
+ char *ptr;
+ int ret = OPUS_OK;
+
+ coupled_size = opus_encoder_get_size(2);
+ mono_size = opus_encoder_get_size(1);
+ ptr = (char*)st + align(sizeof(OpusMSEncoder));
+ switch (request)
+ {
+ case OPUS_SET_BITRATE_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value != OPUS_AUTO && value != OPUS_BITRATE_MAX)
+ {
+ if (value <= 0)
+ goto bad_arg;
+ value = IMIN(300000*st->layout.nb_channels, IMAX(500*st->layout.nb_channels, value));
+ }
+ st->bitrate_bps = value;
+ }
+ break;
+ case OPUS_GET_BITRATE_REQUEST:
+ {
+ int s;
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = 0;
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ opus_int32 rate;
+ OpusEncoder *enc;
+ enc = (OpusEncoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ opus_encoder_ctl(enc, request, &rate);
+ *value += rate;
+ }
+ }
+ break;
+ case OPUS_GET_LSB_DEPTH_REQUEST:
+ case OPUS_GET_VBR_REQUEST:
+ case OPUS_GET_APPLICATION_REQUEST:
+ case OPUS_GET_BANDWIDTH_REQUEST:
+ case OPUS_GET_COMPLEXITY_REQUEST:
+ case OPUS_GET_PACKET_LOSS_PERC_REQUEST:
+ case OPUS_GET_DTX_REQUEST:
+ case OPUS_GET_VOICE_RATIO_REQUEST:
+ case OPUS_GET_VBR_CONSTRAINT_REQUEST:
+ case OPUS_GET_SIGNAL_REQUEST:
+ case OPUS_GET_LOOKAHEAD_REQUEST:
+ case OPUS_GET_SAMPLE_RATE_REQUEST:
+ case OPUS_GET_INBAND_FEC_REQUEST:
+ case OPUS_GET_FORCE_CHANNELS_REQUEST:
+ case OPUS_GET_PREDICTION_DISABLED_REQUEST:
+ case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ OpusEncoder *enc;
+ /* For int32* GET params, just query the first stream */
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ enc = (OpusEncoder*)ptr;
+ ret = opus_encoder_ctl(enc, request, value);
+ }
+ break;
+ case OPUS_GET_FINAL_RANGE_REQUEST:
+ {
+ int s;
+ opus_uint32 *value = va_arg(ap, opus_uint32*);
+ opus_uint32 tmp;
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value=0;
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusEncoder *enc;
+ enc = (OpusEncoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ ret = opus_encoder_ctl(enc, request, &tmp);
+ if (ret != OPUS_OK) break;
+ *value ^= tmp;
+ }
+ }
+ break;
+ case OPUS_SET_LSB_DEPTH_REQUEST:
+ case OPUS_SET_COMPLEXITY_REQUEST:
+ case OPUS_SET_VBR_REQUEST:
+ case OPUS_SET_VBR_CONSTRAINT_REQUEST:
+ case OPUS_SET_MAX_BANDWIDTH_REQUEST:
+ case OPUS_SET_BANDWIDTH_REQUEST:
+ case OPUS_SET_SIGNAL_REQUEST:
+ case OPUS_SET_APPLICATION_REQUEST:
+ case OPUS_SET_INBAND_FEC_REQUEST:
+ case OPUS_SET_PACKET_LOSS_PERC_REQUEST:
+ case OPUS_SET_DTX_REQUEST:
+ case OPUS_SET_FORCE_MODE_REQUEST:
+ case OPUS_SET_FORCE_CHANNELS_REQUEST:
+ case OPUS_SET_PREDICTION_DISABLED_REQUEST:
+ case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
+ {
+ int s;
+ /* This works for int32 params */
+ opus_int32 value = va_arg(ap, opus_int32);
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusEncoder *enc;
+
+ enc = (OpusEncoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ ret = opus_encoder_ctl(enc, request, value);
+ if (ret != OPUS_OK)
+ break;
+ }
+ }
+ break;
+ case OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST:
+ {
+ int s;
+ opus_int32 stream_id;
+ OpusEncoder **value;
+ stream_id = va_arg(ap, opus_int32);
+ if (stream_id<0 || stream_id >= st->layout.nb_streams)
+ goto bad_arg;
+ value = va_arg(ap, OpusEncoder**);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ for (s=0;s<stream_id;s++)
+ {
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ }
+ *value = (OpusEncoder*)ptr;
+ }
+ break;
+ case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ st->variable_duration = value;
+ }
+ break;
+ case OPUS_GET_EXPERT_FRAME_DURATION_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = st->variable_duration;
+ }
+ break;
+ case OPUS_RESET_STATE:
+ {
+ int s;
+ if (st->mapping_type == MAPPING_TYPE_SURROUND)
+ {
+ OPUS_CLEAR(ms_get_preemph_mem(st), st->layout.nb_channels);
+ OPUS_CLEAR(ms_get_window_mem(st), st->layout.nb_channels*120);
+ }
+ for (s=0;s<st->layout.nb_streams;s++)
+ {
+ OpusEncoder *enc;
+ enc = (OpusEncoder*)ptr;
+ if (s < st->layout.nb_coupled_streams)
+ ptr += align(coupled_size);
+ else
+ ptr += align(mono_size);
+ ret = opus_encoder_ctl(enc, OPUS_RESET_STATE);
+ if (ret != OPUS_OK)
+ break;
+ }
+ }
+ break;
+ default:
+ ret = OPUS_UNIMPLEMENTED;
+ break;
+ }
+ return ret;
+bad_arg:
+ return OPUS_BAD_ARG;
+}
+
+int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...)
+{
+ int ret;
+ va_list ap;
+ va_start(ap, request);
+ ret = opus_multistream_encoder_ctl_va_list(st, request, ap);
+ va_end(ap);
+ return ret;
+}
+
+void opus_multistream_encoder_destroy(OpusMSEncoder *st)
+{
+ opus_free(st);
+}
diff --git a/media/libopus/src/opus_private.h b/media/libopus/src/opus_private.h
new file mode 100644
index 0000000000..5e2463f546
--- /dev/null
+++ b/media/libopus/src/opus_private.h
@@ -0,0 +1,201 @@
+/* Copyright (c) 2012 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#ifndef OPUS_PRIVATE_H
+#define OPUS_PRIVATE_H
+
+#include "arch.h"
+#include "opus.h"
+#include "celt.h"
+
+#include <stdarg.h> /* va_list */
+#include <stddef.h> /* offsetof */
+
+struct OpusRepacketizer {
+ unsigned char toc;
+ int nb_frames;
+ const unsigned char *frames[48];
+ opus_int16 len[48];
+ int framesize;
+};
+
+typedef struct ChannelLayout {
+ int nb_channels;
+ int nb_streams;
+ int nb_coupled_streams;
+ unsigned char mapping[256];
+} ChannelLayout;
+
+typedef enum {
+ MAPPING_TYPE_NONE,
+ MAPPING_TYPE_SURROUND,
+ MAPPING_TYPE_AMBISONICS
+} MappingType;
+
+struct OpusMSEncoder {
+ ChannelLayout layout;
+ int arch;
+ int lfe_stream;
+ int application;
+ int variable_duration;
+ MappingType mapping_type;
+ opus_int32 bitrate_bps;
+ /* Encoder states go here */
+ /* then opus_val32 window_mem[channels*120]; */
+ /* then opus_val32 preemph_mem[channels]; */
+};
+
+struct OpusMSDecoder {
+ ChannelLayout layout;
+ /* Decoder states go here */
+};
+
+int opus_multistream_encoder_ctl_va_list(struct OpusMSEncoder *st, int request,
+ va_list ap);
+int opus_multistream_decoder_ctl_va_list(struct OpusMSDecoder *st, int request,
+ va_list ap);
+
+int validate_layout(const ChannelLayout *layout);
+int get_left_channel(const ChannelLayout *layout, int stream_id, int prev);
+int get_right_channel(const ChannelLayout *layout, int stream_id, int prev);
+int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev);
+
+typedef void (*opus_copy_channel_in_func)(
+ opus_val16 *dst,
+ int dst_stride,
+ const void *src,
+ int src_stride,
+ int src_channel,
+ int frame_size,
+ void *user_data
+);
+
+typedef void (*opus_copy_channel_out_func)(
+ void *dst,
+ int dst_stride,
+ int dst_channel,
+ const opus_val16 *src,
+ int src_stride,
+ int frame_size,
+ void *user_data
+);
+
+#define MODE_SILK_ONLY 1000
+#define MODE_HYBRID 1001
+#define MODE_CELT_ONLY 1002
+
+#define OPUS_SET_VOICE_RATIO_REQUEST 11018
+#define OPUS_GET_VOICE_RATIO_REQUEST 11019
+
+/** Configures the encoder's expected percentage of voice
+ * opposed to music or other signals.
+ *
+ * @note This interface is currently more aspiration than actuality. It's
+ * ultimately expected to bias an automatic signal classifier, but it currently
+ * just shifts the static bitrate to mode mapping around a little bit.
+ *
+ * @param[in] x <tt>int</tt>: Voice percentage in the range 0-100, inclusive.
+ * @hideinitializer */
+#define OPUS_SET_VOICE_RATIO(x) OPUS_SET_VOICE_RATIO_REQUEST, __opus_check_int(x)
+/** Gets the encoder's configured voice ratio value, @see OPUS_SET_VOICE_RATIO
+ *
+ * @param[out] x <tt>int*</tt>: Voice percentage in the range 0-100, inclusive.
+ * @hideinitializer */
+#define OPUS_GET_VOICE_RATIO(x) OPUS_GET_VOICE_RATIO_REQUEST, __opus_check_int_ptr(x)
+
+
+#define OPUS_SET_FORCE_MODE_REQUEST 11002
+#define OPUS_SET_FORCE_MODE(x) OPUS_SET_FORCE_MODE_REQUEST, __opus_check_int(x)
+
+typedef void (*downmix_func)(const void *, opus_val32 *, int, int, int, int, int);
+void downmix_float(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
+void downmix_int(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
+int is_digital_silence(const opus_val16* pcm, int frame_size, int channels, int lsb_depth);
+
+int encode_size(int size, unsigned char *data);
+
+opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs);
+
+opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
+ unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
+ const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2,
+ int analysis_channels, downmix_func downmix, int float_api);
+
+int opus_decode_native(OpusDecoder *st, const unsigned char *data, opus_int32 len,
+ opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited,
+ opus_int32 *packet_offset, int soft_clip);
+
+/* Make sure everything is properly aligned. */
+static OPUS_INLINE int align(int i)
+{
+ struct foo {char c; union { void* p; opus_int32 i; opus_val32 v; } u;};
+
+ unsigned int alignment = offsetof(struct foo, u);
+
+ /* Optimizing compilers should optimize div and multiply into and
+ for all sensible alignment values. */
+ return ((i + alignment - 1) / alignment) * alignment;
+}
+
+int opus_packet_parse_impl(const unsigned char *data, opus_int32 len,
+ int self_delimited, unsigned char *out_toc,
+ const unsigned char *frames[48], opus_int16 size[48],
+ int *payload_offset, opus_int32 *packet_offset);
+
+opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end,
+ unsigned char *data, opus_int32 maxlen, int self_delimited, int pad);
+
+int pad_frame(unsigned char *data, opus_int32 len, opus_int32 new_len);
+
+int opus_multistream_encode_native
+(
+ struct OpusMSEncoder *st,
+ opus_copy_channel_in_func copy_channel_in,
+ const void *pcm,
+ int analysis_frame_size,
+ unsigned char *data,
+ opus_int32 max_data_bytes,
+ int lsb_depth,
+ downmix_func downmix,
+ int float_api,
+ void *user_data
+);
+
+int opus_multistream_decode_native(
+ struct OpusMSDecoder *st,
+ const unsigned char *data,
+ opus_int32 len,
+ void *pcm,
+ opus_copy_channel_out_func copy_channel_out,
+ int frame_size,
+ int decode_fec,
+ int soft_clip,
+ void *user_data
+);
+
+#endif /* OPUS_PRIVATE_H */
diff --git a/media/libopus/src/opus_projection_decoder.c b/media/libopus/src/opus_projection_decoder.c
new file mode 100644
index 0000000000..c2e07d5bcf
--- /dev/null
+++ b/media/libopus/src/opus_projection_decoder.c
@@ -0,0 +1,258 @@
+/* Copyright (c) 2017 Google Inc.
+ Written by Andrew Allen */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "mathops.h"
+#include "os_support.h"
+#include "opus_private.h"
+#include "opus_defines.h"
+#include "opus_projection.h"
+#include "opus_multistream.h"
+#include "mapping_matrix.h"
+#include "stack_alloc.h"
+
+struct OpusProjectionDecoder
+{
+ opus_int32 demixing_matrix_size_in_bytes;
+ /* Encoder states go here */
+};
+
+#if !defined(DISABLE_FLOAT_API)
+static void opus_projection_copy_channel_out_float(
+ void *dst,
+ int dst_stride,
+ int dst_channel,
+ const opus_val16 *src,
+ int src_stride,
+ int frame_size,
+ void *user_data)
+{
+ float *float_dst;
+ const MappingMatrix *matrix;
+ float_dst = (float *)dst;
+ matrix = (const MappingMatrix *)user_data;
+
+ if (dst_channel == 0)
+ OPUS_CLEAR(float_dst, frame_size * dst_stride);
+
+ if (src != NULL)
+ mapping_matrix_multiply_channel_out_float(matrix, src, dst_channel,
+ src_stride, float_dst, dst_stride, frame_size);
+}
+#endif
+
+static void opus_projection_copy_channel_out_short(
+ void *dst,
+ int dst_stride,
+ int dst_channel,
+ const opus_val16 *src,
+ int src_stride,
+ int frame_size,
+ void *user_data)
+{
+ opus_int16 *short_dst;
+ const MappingMatrix *matrix;
+ short_dst = (opus_int16 *)dst;
+ matrix = (const MappingMatrix *)user_data;
+ if (dst_channel == 0)
+ OPUS_CLEAR(short_dst, frame_size * dst_stride);
+
+ if (src != NULL)
+ mapping_matrix_multiply_channel_out_short(matrix, src, dst_channel,
+ src_stride, short_dst, dst_stride, frame_size);
+}
+
+static MappingMatrix *get_dec_demixing_matrix(OpusProjectionDecoder *st)
+{
+ /* void* cast avoids clang -Wcast-align warning */
+ return (MappingMatrix*)(void*)((char*)st +
+ align(sizeof(OpusProjectionDecoder)));
+}
+
+static OpusMSDecoder *get_multistream_decoder(OpusProjectionDecoder *st)
+{
+ /* void* cast avoids clang -Wcast-align warning */
+ return (OpusMSDecoder*)(void*)((char*)st +
+ align(sizeof(OpusProjectionDecoder) +
+ st->demixing_matrix_size_in_bytes));
+}
+
+opus_int32 opus_projection_decoder_get_size(int channels, int streams,
+ int coupled_streams)
+{
+ opus_int32 matrix_size;
+ opus_int32 decoder_size;
+
+ matrix_size =
+ mapping_matrix_get_size(streams + coupled_streams, channels);
+ if (!matrix_size)
+ return 0;
+
+ decoder_size = opus_multistream_decoder_get_size(streams, coupled_streams);
+ if (!decoder_size)
+ return 0;
+
+ return align(sizeof(OpusProjectionDecoder)) + matrix_size + decoder_size;
+}
+
+int opus_projection_decoder_init(OpusProjectionDecoder *st, opus_int32 Fs,
+ int channels, int streams, int coupled_streams,
+ unsigned char *demixing_matrix, opus_int32 demixing_matrix_size)
+{
+ int nb_input_streams;
+ opus_int32 expected_matrix_size;
+ int i, ret;
+ unsigned char mapping[255];
+ VARDECL(opus_int16, buf);
+ ALLOC_STACK;
+
+ /* Verify supplied matrix size. */
+ nb_input_streams = streams + coupled_streams;
+ expected_matrix_size = nb_input_streams * channels * sizeof(opus_int16);
+ if (expected_matrix_size != demixing_matrix_size)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+
+ /* Convert demixing matrix input into internal format. */
+ ALLOC(buf, nb_input_streams * channels, opus_int16);
+ for (i = 0; i < nb_input_streams * channels; i++)
+ {
+ int s = demixing_matrix[2*i + 1] << 8 | demixing_matrix[2*i];
+ s = ((s & 0xFFFF) ^ 0x8000) - 0x8000;
+ buf[i] = (opus_int16)s;
+ }
+
+ /* Assign demixing matrix. */
+ st->demixing_matrix_size_in_bytes =
+ mapping_matrix_get_size(channels, nb_input_streams);
+ if (!st->demixing_matrix_size_in_bytes)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+
+ mapping_matrix_init(get_dec_demixing_matrix(st), channels, nb_input_streams, 0,
+ buf, demixing_matrix_size);
+
+ /* Set trivial mapping so each input channel pairs with a matrix column. */
+ for (i = 0; i < channels; i++)
+ mapping[i] = i;
+
+ ret = opus_multistream_decoder_init(
+ get_multistream_decoder(st), Fs, channels, streams, coupled_streams, mapping);
+ RESTORE_STACK;
+ return ret;
+}
+
+OpusProjectionDecoder *opus_projection_decoder_create(
+ opus_int32 Fs, int channels, int streams, int coupled_streams,
+ unsigned char *demixing_matrix, opus_int32 demixing_matrix_size, int *error)
+{
+ int size;
+ int ret;
+ OpusProjectionDecoder *st;
+
+ /* Allocate space for the projection decoder. */
+ size = opus_projection_decoder_get_size(channels, streams, coupled_streams);
+ if (!size) {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ st = (OpusProjectionDecoder *)opus_alloc(size);
+ if (!st)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+
+ /* Initialize projection decoder with provided settings. */
+ ret = opus_projection_decoder_init(st, Fs, channels, streams, coupled_streams,
+ demixing_matrix, demixing_matrix_size);
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ if (error)
+ *error = ret;
+ return st;
+}
+
+#ifdef FIXED_POINT
+int opus_projection_decode(OpusProjectionDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_int16 *pcm, int frame_size,
+ int decode_fec)
+{
+ return opus_multistream_decode_native(get_multistream_decoder(st), data, len,
+ pcm, opus_projection_copy_channel_out_short, frame_size, decode_fec, 0,
+ get_dec_demixing_matrix(st));
+}
+#else
+int opus_projection_decode(OpusProjectionDecoder *st, const unsigned char *data,
+ opus_int32 len, opus_int16 *pcm, int frame_size,
+ int decode_fec)
+{
+ return opus_multistream_decode_native(get_multistream_decoder(st), data, len,
+ pcm, opus_projection_copy_channel_out_short, frame_size, decode_fec, 1,
+ get_dec_demixing_matrix(st));
+}
+#endif
+
+#ifndef DISABLE_FLOAT_API
+int opus_projection_decode_float(OpusProjectionDecoder *st, const unsigned char *data,
+ opus_int32 len, float *pcm, int frame_size, int decode_fec)
+{
+ return opus_multistream_decode_native(get_multistream_decoder(st), data, len,
+ pcm, opus_projection_copy_channel_out_float, frame_size, decode_fec, 0,
+ get_dec_demixing_matrix(st));
+}
+#endif
+
+int opus_projection_decoder_ctl(OpusProjectionDecoder *st, int request, ...)
+{
+ va_list ap;
+ int ret = OPUS_OK;
+
+ va_start(ap, request);
+ ret = opus_multistream_decoder_ctl_va_list(get_multistream_decoder(st),
+ request, ap);
+ va_end(ap);
+ return ret;
+}
+
+void opus_projection_decoder_destroy(OpusProjectionDecoder *st)
+{
+ opus_free(st);
+}
+
diff --git a/media/libopus/src/opus_projection_encoder.c b/media/libopus/src/opus_projection_encoder.c
new file mode 100644
index 0000000000..06fb2d2526
--- /dev/null
+++ b/media/libopus/src/opus_projection_encoder.c
@@ -0,0 +1,468 @@
+/* Copyright (c) 2017 Google Inc.
+ Written by Andrew Allen */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "mathops.h"
+#include "os_support.h"
+#include "opus_private.h"
+#include "opus_defines.h"
+#include "opus_projection.h"
+#include "opus_multistream.h"
+#include "stack_alloc.h"
+#include "mapping_matrix.h"
+
+struct OpusProjectionEncoder
+{
+ opus_int32 mixing_matrix_size_in_bytes;
+ opus_int32 demixing_matrix_size_in_bytes;
+ /* Encoder states go here */
+};
+
+#if !defined(DISABLE_FLOAT_API)
+static void opus_projection_copy_channel_in_float(
+ opus_val16 *dst,
+ int dst_stride,
+ const void *src,
+ int src_stride,
+ int src_channel,
+ int frame_size,
+ void *user_data
+)
+{
+ mapping_matrix_multiply_channel_in_float((const MappingMatrix*)user_data,
+ (const float*)src, src_stride, dst, src_channel, dst_stride, frame_size);
+}
+#endif
+
+static void opus_projection_copy_channel_in_short(
+ opus_val16 *dst,
+ int dst_stride,
+ const void *src,
+ int src_stride,
+ int src_channel,
+ int frame_size,
+ void *user_data
+)
+{
+ mapping_matrix_multiply_channel_in_short((const MappingMatrix*)user_data,
+ (const opus_int16*)src, src_stride, dst, src_channel, dst_stride, frame_size);
+}
+
+static int get_order_plus_one_from_channels(int channels, int *order_plus_one)
+{
+ int order_plus_one_;
+ int acn_channels;
+ int nondiegetic_channels;
+
+ /* Allowed numbers of channels:
+ * (1 + n)^2 + 2j, for n = 0...14 and j = 0 or 1.
+ */
+ if (channels < 1 || channels > 227)
+ return OPUS_BAD_ARG;
+
+ order_plus_one_ = isqrt32(channels);
+ acn_channels = order_plus_one_ * order_plus_one_;
+ nondiegetic_channels = channels - acn_channels;
+ if (nondiegetic_channels != 0 && nondiegetic_channels != 2)
+ return OPUS_BAD_ARG;
+
+ if (order_plus_one)
+ *order_plus_one = order_plus_one_;
+ return OPUS_OK;
+}
+
+static int get_streams_from_channels(int channels, int mapping_family,
+ int *streams, int *coupled_streams,
+ int *order_plus_one)
+{
+ if (mapping_family == 3)
+ {
+ if (get_order_plus_one_from_channels(channels, order_plus_one) != OPUS_OK)
+ return OPUS_BAD_ARG;
+ if (streams)
+ *streams = (channels + 1) / 2;
+ if (coupled_streams)
+ *coupled_streams = channels / 2;
+ return OPUS_OK;
+ }
+ return OPUS_BAD_ARG;
+}
+
+static MappingMatrix *get_mixing_matrix(OpusProjectionEncoder *st)
+{
+ /* void* cast avoids clang -Wcast-align warning */
+ return (MappingMatrix *)(void*)((char*)st +
+ align(sizeof(OpusProjectionEncoder)));
+}
+
+static MappingMatrix *get_enc_demixing_matrix(OpusProjectionEncoder *st)
+{
+ /* void* cast avoids clang -Wcast-align warning */
+ return (MappingMatrix *)(void*)((char*)st +
+ align(sizeof(OpusProjectionEncoder) +
+ st->mixing_matrix_size_in_bytes));
+}
+
+static OpusMSEncoder *get_multistream_encoder(OpusProjectionEncoder *st)
+{
+ /* void* cast avoids clang -Wcast-align warning */
+ return (OpusMSEncoder *)(void*)((char*)st +
+ align(sizeof(OpusProjectionEncoder) +
+ st->mixing_matrix_size_in_bytes +
+ st->demixing_matrix_size_in_bytes));
+}
+
+opus_int32 opus_projection_ambisonics_encoder_get_size(int channels,
+ int mapping_family)
+{
+ int nb_streams;
+ int nb_coupled_streams;
+ int order_plus_one;
+ int mixing_matrix_rows, mixing_matrix_cols;
+ int demixing_matrix_rows, demixing_matrix_cols;
+ opus_int32 mixing_matrix_size, demixing_matrix_size;
+ opus_int32 encoder_size;
+ int ret;
+
+ ret = get_streams_from_channels(channels, mapping_family, &nb_streams,
+ &nb_coupled_streams, &order_plus_one);
+ if (ret != OPUS_OK)
+ return 0;
+
+ if (order_plus_one == 2)
+ {
+ mixing_matrix_rows = mapping_matrix_foa_mixing.rows;
+ mixing_matrix_cols = mapping_matrix_foa_mixing.cols;
+ demixing_matrix_rows = mapping_matrix_foa_demixing.rows;
+ demixing_matrix_cols = mapping_matrix_foa_demixing.cols;
+ }
+ else if (order_plus_one == 3)
+ {
+ mixing_matrix_rows = mapping_matrix_soa_mixing.rows;
+ mixing_matrix_cols = mapping_matrix_soa_mixing.cols;
+ demixing_matrix_rows = mapping_matrix_soa_demixing.rows;
+ demixing_matrix_cols = mapping_matrix_soa_demixing.cols;
+ }
+ else if (order_plus_one == 4)
+ {
+ mixing_matrix_rows = mapping_matrix_toa_mixing.rows;
+ mixing_matrix_cols = mapping_matrix_toa_mixing.cols;
+ demixing_matrix_rows = mapping_matrix_toa_demixing.rows;
+ demixing_matrix_cols = mapping_matrix_toa_demixing.cols;
+ }
+ else
+ return 0;
+
+ mixing_matrix_size =
+ mapping_matrix_get_size(mixing_matrix_rows, mixing_matrix_cols);
+ if (!mixing_matrix_size)
+ return 0;
+
+ demixing_matrix_size =
+ mapping_matrix_get_size(demixing_matrix_rows, demixing_matrix_cols);
+ if (!demixing_matrix_size)
+ return 0;
+
+ encoder_size =
+ opus_multistream_encoder_get_size(nb_streams, nb_coupled_streams);
+ if (!encoder_size)
+ return 0;
+
+ return align(sizeof(OpusProjectionEncoder)) +
+ mixing_matrix_size + demixing_matrix_size + encoder_size;
+}
+
+int opus_projection_ambisonics_encoder_init(OpusProjectionEncoder *st, opus_int32 Fs,
+ int channels, int mapping_family,
+ int *streams, int *coupled_streams,
+ int application)
+{
+ MappingMatrix *mixing_matrix;
+ MappingMatrix *demixing_matrix;
+ OpusMSEncoder *ms_encoder;
+ int i;
+ int ret;
+ int order_plus_one;
+ unsigned char mapping[255];
+
+ if (streams == NULL || coupled_streams == NULL) {
+ return OPUS_BAD_ARG;
+ }
+
+ if (get_streams_from_channels(channels, mapping_family, streams,
+ coupled_streams, &order_plus_one) != OPUS_OK)
+ return OPUS_BAD_ARG;
+
+ if (mapping_family == 3)
+ {
+ /* Assign mixing matrix based on available pre-computed matrices. */
+ mixing_matrix = get_mixing_matrix(st);
+ if (order_plus_one == 2)
+ {
+ mapping_matrix_init(mixing_matrix, mapping_matrix_foa_mixing.rows,
+ mapping_matrix_foa_mixing.cols, mapping_matrix_foa_mixing.gain,
+ mapping_matrix_foa_mixing_data,
+ sizeof(mapping_matrix_foa_mixing_data));
+ }
+ else if (order_plus_one == 3)
+ {
+ mapping_matrix_init(mixing_matrix, mapping_matrix_soa_mixing.rows,
+ mapping_matrix_soa_mixing.cols, mapping_matrix_soa_mixing.gain,
+ mapping_matrix_soa_mixing_data,
+ sizeof(mapping_matrix_soa_mixing_data));
+ }
+ else if (order_plus_one == 4)
+ {
+ mapping_matrix_init(mixing_matrix, mapping_matrix_toa_mixing.rows,
+ mapping_matrix_toa_mixing.cols, mapping_matrix_toa_mixing.gain,
+ mapping_matrix_toa_mixing_data,
+ sizeof(mapping_matrix_toa_mixing_data));
+ }
+ else
+ return OPUS_BAD_ARG;
+
+ st->mixing_matrix_size_in_bytes = mapping_matrix_get_size(
+ mixing_matrix->rows, mixing_matrix->cols);
+ if (!st->mixing_matrix_size_in_bytes)
+ return OPUS_BAD_ARG;
+
+ /* Assign demixing matrix based on available pre-computed matrices. */
+ demixing_matrix = get_enc_demixing_matrix(st);
+ if (order_plus_one == 2)
+ {
+ mapping_matrix_init(demixing_matrix, mapping_matrix_foa_demixing.rows,
+ mapping_matrix_foa_demixing.cols, mapping_matrix_foa_demixing.gain,
+ mapping_matrix_foa_demixing_data,
+ sizeof(mapping_matrix_foa_demixing_data));
+ }
+ else if (order_plus_one == 3)
+ {
+ mapping_matrix_init(demixing_matrix, mapping_matrix_soa_demixing.rows,
+ mapping_matrix_soa_demixing.cols, mapping_matrix_soa_demixing.gain,
+ mapping_matrix_soa_demixing_data,
+ sizeof(mapping_matrix_soa_demixing_data));
+ }
+ else if (order_plus_one == 4)
+ {
+ mapping_matrix_init(demixing_matrix, mapping_matrix_toa_demixing.rows,
+ mapping_matrix_toa_demixing.cols, mapping_matrix_toa_demixing.gain,
+ mapping_matrix_toa_demixing_data,
+ sizeof(mapping_matrix_toa_demixing_data));
+ }
+ else
+ return OPUS_BAD_ARG;
+
+ st->demixing_matrix_size_in_bytes = mapping_matrix_get_size(
+ demixing_matrix->rows, demixing_matrix->cols);
+ if (!st->demixing_matrix_size_in_bytes)
+ return OPUS_BAD_ARG;
+ }
+ else
+ return OPUS_UNIMPLEMENTED;
+
+ /* Ensure matrices are large enough for desired coding scheme. */
+ if (*streams + *coupled_streams > mixing_matrix->rows ||
+ channels > mixing_matrix->cols ||
+ channels > demixing_matrix->rows ||
+ *streams + *coupled_streams > demixing_matrix->cols)
+ return OPUS_BAD_ARG;
+
+ /* Set trivial mapping so each input channel pairs with a matrix column. */
+ for (i = 0; i < channels; i++)
+ mapping[i] = i;
+
+ /* Initialize multistream encoder with provided settings. */
+ ms_encoder = get_multistream_encoder(st);
+ ret = opus_multistream_encoder_init(ms_encoder, Fs, channels, *streams,
+ *coupled_streams, mapping, application);
+ return ret;
+}
+
+OpusProjectionEncoder *opus_projection_ambisonics_encoder_create(
+ opus_int32 Fs, int channels, int mapping_family, int *streams,
+ int *coupled_streams, int application, int *error)
+{
+ int size;
+ int ret;
+ OpusProjectionEncoder *st;
+
+ /* Allocate space for the projection encoder. */
+ size = opus_projection_ambisonics_encoder_get_size(channels, mapping_family);
+ if (!size) {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+ st = (OpusProjectionEncoder *)opus_alloc(size);
+ if (!st)
+ {
+ if (error)
+ *error = OPUS_ALLOC_FAIL;
+ return NULL;
+ }
+
+ /* Initialize projection encoder with provided settings. */
+ ret = opus_projection_ambisonics_encoder_init(st, Fs, channels,
+ mapping_family, streams, coupled_streams, application);
+ if (ret != OPUS_OK)
+ {
+ opus_free(st);
+ st = NULL;
+ }
+ if (error)
+ *error = ret;
+ return st;
+}
+
+int opus_projection_encode(OpusProjectionEncoder *st, const opus_int16 *pcm,
+ int frame_size, unsigned char *data,
+ opus_int32 max_data_bytes)
+{
+ return opus_multistream_encode_native(get_multistream_encoder(st),
+ opus_projection_copy_channel_in_short, pcm, frame_size, data,
+ max_data_bytes, 16, downmix_int, 0, get_mixing_matrix(st));
+}
+
+#ifndef DISABLE_FLOAT_API
+#ifdef FIXED_POINT
+int opus_projection_encode_float(OpusProjectionEncoder *st, const float *pcm,
+ int frame_size, unsigned char *data,
+ opus_int32 max_data_bytes)
+{
+ return opus_multistream_encode_native(get_multistream_encoder(st),
+ opus_projection_copy_channel_in_float, pcm, frame_size, data,
+ max_data_bytes, 16, downmix_float, 1, get_mixing_matrix(st));
+}
+#else
+int opus_projection_encode_float(OpusProjectionEncoder *st, const float *pcm,
+ int frame_size, unsigned char *data,
+ opus_int32 max_data_bytes)
+{
+ return opus_multistream_encode_native(get_multistream_encoder(st),
+ opus_projection_copy_channel_in_float, pcm, frame_size, data,
+ max_data_bytes, 24, downmix_float, 1, get_mixing_matrix(st));
+}
+#endif
+#endif
+
+void opus_projection_encoder_destroy(OpusProjectionEncoder *st)
+{
+ opus_free(st);
+}
+
+int opus_projection_encoder_ctl(OpusProjectionEncoder *st, int request, ...)
+{
+ va_list ap;
+ MappingMatrix *demixing_matrix;
+ OpusMSEncoder *ms_encoder;
+ int ret = OPUS_OK;
+
+ ms_encoder = get_multistream_encoder(st);
+ demixing_matrix = get_enc_demixing_matrix(st);
+
+ va_start(ap, request);
+ switch(request)
+ {
+ case OPUS_PROJECTION_GET_DEMIXING_MATRIX_SIZE_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value =
+ ms_encoder->layout.nb_channels * (ms_encoder->layout.nb_streams
+ + ms_encoder->layout.nb_coupled_streams) * sizeof(opus_int16);
+ }
+ break;
+ case OPUS_PROJECTION_GET_DEMIXING_MATRIX_GAIN_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (!value)
+ {
+ goto bad_arg;
+ }
+ *value = demixing_matrix->gain;
+ }
+ break;
+ case OPUS_PROJECTION_GET_DEMIXING_MATRIX_REQUEST:
+ {
+ int i, j, k, l;
+ int nb_input_streams;
+ int nb_output_streams;
+ unsigned char *external_char;
+ opus_int16 *internal_short;
+ opus_int32 external_size;
+ opus_int32 internal_size;
+
+ /* (I/O is in relation to the decoder's perspective). */
+ nb_input_streams = ms_encoder->layout.nb_streams +
+ ms_encoder->layout.nb_coupled_streams;
+ nb_output_streams = ms_encoder->layout.nb_channels;
+
+ external_char = va_arg(ap, unsigned char *);
+ external_size = va_arg(ap, opus_int32);
+ if (!external_char)
+ {
+ goto bad_arg;
+ }
+ internal_short = mapping_matrix_get_data(demixing_matrix);
+ internal_size = nb_input_streams * nb_output_streams * sizeof(opus_int16);
+ if (external_size != internal_size)
+ {
+ goto bad_arg;
+ }
+
+ /* Copy demixing matrix subset to output destination. */
+ l = 0;
+ for (i = 0; i < nb_input_streams; i++) {
+ for (j = 0; j < nb_output_streams; j++) {
+ k = demixing_matrix->rows * i + j;
+ external_char[2*l] = (unsigned char)internal_short[k];
+ external_char[2*l+1] = (unsigned char)(internal_short[k] >> 8);
+ l++;
+ }
+ }
+ }
+ break;
+ default:
+ {
+ ret = opus_multistream_encoder_ctl_va_list(ms_encoder, request, ap);
+ }
+ break;
+ }
+ va_end(ap);
+ return ret;
+
+bad_arg:
+ va_end(ap);
+ return OPUS_BAD_ARG;
+}
+
diff --git a/media/libopus/src/repacketizer.c b/media/libopus/src/repacketizer.c
new file mode 100644
index 0000000000..bda44a148a
--- /dev/null
+++ b/media/libopus/src/repacketizer.c
@@ -0,0 +1,349 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "opus.h"
+#include "opus_private.h"
+#include "os_support.h"
+
+
+int opus_repacketizer_get_size(void)
+{
+ return sizeof(OpusRepacketizer);
+}
+
+OpusRepacketizer *opus_repacketizer_init(OpusRepacketizer *rp)
+{
+ rp->nb_frames = 0;
+ return rp;
+}
+
+OpusRepacketizer *opus_repacketizer_create(void)
+{
+ OpusRepacketizer *rp;
+ rp=(OpusRepacketizer *)opus_alloc(opus_repacketizer_get_size());
+ if(rp==NULL)return NULL;
+ return opus_repacketizer_init(rp);
+}
+
+void opus_repacketizer_destroy(OpusRepacketizer *rp)
+{
+ opus_free(rp);
+}
+
+static int opus_repacketizer_cat_impl(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len, int self_delimited)
+{
+ unsigned char tmp_toc;
+ int curr_nb_frames,ret;
+ /* Set of check ToC */
+ if (len<1) return OPUS_INVALID_PACKET;
+ if (rp->nb_frames == 0)
+ {
+ rp->toc = data[0];
+ rp->framesize = opus_packet_get_samples_per_frame(data, 8000);
+ } else if ((rp->toc&0xFC) != (data[0]&0xFC))
+ {
+ /*fprintf(stderr, "toc mismatch: 0x%x vs 0x%x\n", rp->toc, data[0]);*/
+ return OPUS_INVALID_PACKET;
+ }
+ curr_nb_frames = opus_packet_get_nb_frames(data, len);
+ if(curr_nb_frames<1) return OPUS_INVALID_PACKET;
+
+ /* Check the 120 ms maximum packet size */
+ if ((curr_nb_frames+rp->nb_frames)*rp->framesize > 960)
+ {
+ return OPUS_INVALID_PACKET;
+ }
+
+ ret=opus_packet_parse_impl(data, len, self_delimited, &tmp_toc, &rp->frames[rp->nb_frames], &rp->len[rp->nb_frames], NULL, NULL);
+ if(ret<1)return ret;
+
+ rp->nb_frames += curr_nb_frames;
+ return OPUS_OK;
+}
+
+int opus_repacketizer_cat(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len)
+{
+ return opus_repacketizer_cat_impl(rp, data, len, 0);
+}
+
+int opus_repacketizer_get_nb_frames(OpusRepacketizer *rp)
+{
+ return rp->nb_frames;
+}
+
+opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end,
+ unsigned char *data, opus_int32 maxlen, int self_delimited, int pad)
+{
+ int i, count;
+ opus_int32 tot_size;
+ opus_int16 *len;
+ const unsigned char **frames;
+ unsigned char * ptr;
+
+ if (begin<0 || begin>=end || end>rp->nb_frames)
+ {
+ /*fprintf(stderr, "%d %d %d\n", begin, end, rp->nb_frames);*/
+ return OPUS_BAD_ARG;
+ }
+ count = end-begin;
+
+ len = rp->len+begin;
+ frames = rp->frames+begin;
+ if (self_delimited)
+ tot_size = 1 + (len[count-1]>=252);
+ else
+ tot_size = 0;
+
+ ptr = data;
+ if (count==1)
+ {
+ /* Code 0 */
+ tot_size += len[0]+1;
+ if (tot_size > maxlen)
+ return OPUS_BUFFER_TOO_SMALL;
+ *ptr++ = rp->toc&0xFC;
+ } else if (count==2)
+ {
+ if (len[1] == len[0])
+ {
+ /* Code 1 */
+ tot_size += 2*len[0]+1;
+ if (tot_size > maxlen)
+ return OPUS_BUFFER_TOO_SMALL;
+ *ptr++ = (rp->toc&0xFC) | 0x1;
+ } else {
+ /* Code 2 */
+ tot_size += len[0]+len[1]+2+(len[0]>=252);
+ if (tot_size > maxlen)
+ return OPUS_BUFFER_TOO_SMALL;
+ *ptr++ = (rp->toc&0xFC) | 0x2;
+ ptr += encode_size(len[0], ptr);
+ }
+ }
+ if (count > 2 || (pad && tot_size < maxlen))
+ {
+ /* Code 3 */
+ int vbr;
+ int pad_amount=0;
+
+ /* Restart the process for the padding case */
+ ptr = data;
+ if (self_delimited)
+ tot_size = 1 + (len[count-1]>=252);
+ else
+ tot_size = 0;
+ vbr = 0;
+ for (i=1;i<count;i++)
+ {
+ if (len[i] != len[0])
+ {
+ vbr=1;
+ break;
+ }
+ }
+ if (vbr)
+ {
+ tot_size += 2;
+ for (i=0;i<count-1;i++)
+ tot_size += 1 + (len[i]>=252) + len[i];
+ tot_size += len[count-1];
+
+ if (tot_size > maxlen)
+ return OPUS_BUFFER_TOO_SMALL;
+ *ptr++ = (rp->toc&0xFC) | 0x3;
+ *ptr++ = count | 0x80;
+ } else {
+ tot_size += count*len[0]+2;
+ if (tot_size > maxlen)
+ return OPUS_BUFFER_TOO_SMALL;
+ *ptr++ = (rp->toc&0xFC) | 0x3;
+ *ptr++ = count;
+ }
+ pad_amount = pad ? (maxlen-tot_size) : 0;
+ if (pad_amount != 0)
+ {
+ int nb_255s;
+ data[1] |= 0x40;
+ nb_255s = (pad_amount-1)/255;
+ for (i=0;i<nb_255s;i++)
+ *ptr++ = 255;
+ *ptr++ = pad_amount-255*nb_255s-1;
+ tot_size += pad_amount;
+ }
+ if (vbr)
+ {
+ for (i=0;i<count-1;i++)
+ ptr += encode_size(len[i], ptr);
+ }
+ }
+ if (self_delimited) {
+ int sdlen = encode_size(len[count-1], ptr);
+ ptr += sdlen;
+ }
+ /* Copy the actual data */
+ for (i=0;i<count;i++)
+ {
+ /* Using OPUS_MOVE() instead of OPUS_COPY() in case we're doing in-place
+ padding from opus_packet_pad or opus_packet_unpad(). */
+ /* assert disabled because it's not valid in C. */
+ /* celt_assert(frames[i] + len[i] <= data || ptr <= frames[i]); */
+ OPUS_MOVE(ptr, frames[i], len[i]);
+ ptr += len[i];
+ }
+ if (pad)
+ {
+ /* Fill padding with zeros. */
+ while (ptr<data+maxlen)
+ *ptr++=0;
+ }
+ return tot_size;
+}
+
+opus_int32 opus_repacketizer_out_range(OpusRepacketizer *rp, int begin, int end, unsigned char *data, opus_int32 maxlen)
+{
+ return opus_repacketizer_out_range_impl(rp, begin, end, data, maxlen, 0, 0);
+}
+
+opus_int32 opus_repacketizer_out(OpusRepacketizer *rp, unsigned char *data, opus_int32 maxlen)
+{
+ return opus_repacketizer_out_range_impl(rp, 0, rp->nb_frames, data, maxlen, 0, 0);
+}
+
+int opus_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len)
+{
+ OpusRepacketizer rp;
+ opus_int32 ret;
+ if (len < 1)
+ return OPUS_BAD_ARG;
+ if (len==new_len)
+ return OPUS_OK;
+ else if (len > new_len)
+ return OPUS_BAD_ARG;
+ opus_repacketizer_init(&rp);
+ /* Moving payload to the end of the packet so we can do in-place padding */
+ OPUS_MOVE(data+new_len-len, data, len);
+ ret = opus_repacketizer_cat(&rp, data+new_len-len, len);
+ if (ret != OPUS_OK)
+ return ret;
+ ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, data, new_len, 0, 1);
+ if (ret > 0)
+ return OPUS_OK;
+ else
+ return ret;
+}
+
+opus_int32 opus_packet_unpad(unsigned char *data, opus_int32 len)
+{
+ OpusRepacketizer rp;
+ opus_int32 ret;
+ if (len < 1)
+ return OPUS_BAD_ARG;
+ opus_repacketizer_init(&rp);
+ ret = opus_repacketizer_cat(&rp, data, len);
+ if (ret < 0)
+ return ret;
+ ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, data, len, 0, 0);
+ celt_assert(ret > 0 && ret <= len);
+ return ret;
+}
+
+int opus_multistream_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len, int nb_streams)
+{
+ int s;
+ int count;
+ unsigned char toc;
+ opus_int16 size[48];
+ opus_int32 packet_offset;
+ opus_int32 amount;
+
+ if (len < 1)
+ return OPUS_BAD_ARG;
+ if (len==new_len)
+ return OPUS_OK;
+ else if (len > new_len)
+ return OPUS_BAD_ARG;
+ amount = new_len - len;
+ /* Seek to last stream */
+ for (s=0;s<nb_streams-1;s++)
+ {
+ if (len<=0)
+ return OPUS_INVALID_PACKET;
+ count = opus_packet_parse_impl(data, len, 1, &toc, NULL,
+ size, NULL, &packet_offset);
+ if (count<0)
+ return count;
+ data += packet_offset;
+ len -= packet_offset;
+ }
+ return opus_packet_pad(data, len, len+amount);
+}
+
+opus_int32 opus_multistream_packet_unpad(unsigned char *data, opus_int32 len, int nb_streams)
+{
+ int s;
+ unsigned char toc;
+ opus_int16 size[48];
+ opus_int32 packet_offset;
+ OpusRepacketizer rp;
+ unsigned char *dst;
+ opus_int32 dst_len;
+
+ if (len < 1)
+ return OPUS_BAD_ARG;
+ dst = data;
+ dst_len = 0;
+ /* Unpad all frames */
+ for (s=0;s<nb_streams;s++)
+ {
+ opus_int32 ret;
+ int self_delimited = s!=nb_streams-1;
+ if (len<=0)
+ return OPUS_INVALID_PACKET;
+ opus_repacketizer_init(&rp);
+ ret = opus_packet_parse_impl(data, len, self_delimited, &toc, NULL,
+ size, NULL, &packet_offset);
+ if (ret<0)
+ return ret;
+ ret = opus_repacketizer_cat_impl(&rp, data, packet_offset, self_delimited);
+ if (ret < 0)
+ return ret;
+ ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, dst, len, self_delimited, 0);
+ if (ret < 0)
+ return ret;
+ else
+ dst_len += ret;
+ dst += ret;
+ data += packet_offset;
+ len -= packet_offset;
+ }
+ return dst_len;
+}
+
diff --git a/media/libopus/src/tansig_table.h b/media/libopus/src/tansig_table.h
new file mode 100644
index 0000000000..c76f844a72
--- /dev/null
+++ b/media/libopus/src/tansig_table.h
@@ -0,0 +1,45 @@
+/* This file is auto-generated by gen_tables */
+
+static const float tansig_table[201] = {
+0.000000f, 0.039979f, 0.079830f, 0.119427f, 0.158649f,
+0.197375f, 0.235496f, 0.272905f, 0.309507f, 0.345214f,
+0.379949f, 0.413644f, 0.446244f, 0.477700f, 0.507977f,
+0.537050f, 0.564900f, 0.591519f, 0.616909f, 0.641077f,
+0.664037f, 0.685809f, 0.706419f, 0.725897f, 0.744277f,
+0.761594f, 0.777888f, 0.793199f, 0.807569f, 0.821040f,
+0.833655f, 0.845456f, 0.856485f, 0.866784f, 0.876393f,
+0.885352f, 0.893698f, 0.901468f, 0.908698f, 0.915420f,
+0.921669f, 0.927473f, 0.932862f, 0.937863f, 0.942503f,
+0.946806f, 0.950795f, 0.954492f, 0.957917f, 0.961090f,
+0.964028f, 0.966747f, 0.969265f, 0.971594f, 0.973749f,
+0.975743f, 0.977587f, 0.979293f, 0.980869f, 0.982327f,
+0.983675f, 0.984921f, 0.986072f, 0.987136f, 0.988119f,
+0.989027f, 0.989867f, 0.990642f, 0.991359f, 0.992020f,
+0.992631f, 0.993196f, 0.993718f, 0.994199f, 0.994644f,
+0.995055f, 0.995434f, 0.995784f, 0.996108f, 0.996407f,
+0.996682f, 0.996937f, 0.997172f, 0.997389f, 0.997590f,
+0.997775f, 0.997946f, 0.998104f, 0.998249f, 0.998384f,
+0.998508f, 0.998623f, 0.998728f, 0.998826f, 0.998916f,
+0.999000f, 0.999076f, 0.999147f, 0.999213f, 0.999273f,
+0.999329f, 0.999381f, 0.999428f, 0.999472f, 0.999513f,
+0.999550f, 0.999585f, 0.999617f, 0.999646f, 0.999673f,
+0.999699f, 0.999722f, 0.999743f, 0.999763f, 0.999781f,
+0.999798f, 0.999813f, 0.999828f, 0.999841f, 0.999853f,
+0.999865f, 0.999875f, 0.999885f, 0.999893f, 0.999902f,
+0.999909f, 0.999916f, 0.999923f, 0.999929f, 0.999934f,
+0.999939f, 0.999944f, 0.999948f, 0.999952f, 0.999956f,
+0.999959f, 0.999962f, 0.999965f, 0.999968f, 0.999970f,
+0.999973f, 0.999975f, 0.999977f, 0.999978f, 0.999980f,
+0.999982f, 0.999983f, 0.999984f, 0.999986f, 0.999987f,
+0.999988f, 0.999989f, 0.999990f, 0.999990f, 0.999991f,
+0.999992f, 0.999992f, 0.999993f, 0.999994f, 0.999994f,
+0.999994f, 0.999995f, 0.999995f, 0.999996f, 0.999996f,
+0.999996f, 0.999997f, 0.999997f, 0.999997f, 0.999997f,
+0.999997f, 0.999998f, 0.999998f, 0.999998f, 0.999998f,
+0.999998f, 0.999998f, 0.999999f, 0.999999f, 0.999999f,
+0.999999f, 0.999999f, 0.999999f, 0.999999f, 0.999999f,
+0.999999f, 0.999999f, 0.999999f, 0.999999f, 0.999999f,
+1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
+1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
+1.000000f,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 06:31:37 +0000