From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- media/libopus/celt/bands.h | 123 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 media/libopus/celt/bands.h (limited to 'media/libopus/celt/bands.h') diff --git a/media/libopus/celt/bands.h b/media/libopus/celt/bands.h new file mode 100644 index 0000000000..422b32cf75 --- /dev/null +++ b/media/libopus/celt/bands.h @@ -0,0 +1,123 @@ +/* Copyright (c) 2007-2008 CSIRO + Copyright (c) 2007-2009 Xiph.Org Foundation + Copyright (c) 2008-2009 Gregory Maxwell + Written by Jean-Marc Valin and Gregory Maxwell */ +/* + 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 BANDS_H +#define BANDS_H + +#include "arch.h" +#include "modes.h" +#include "entenc.h" +#include "entdec.h" +#include "rate.h" + +opus_int16 bitexact_cos(opus_int16 x); +int bitexact_log2tan(int isin,int icos); + +/** Compute the amplitude (sqrt energy) in each of the bands + * @param m Mode data + * @param X Spectrum + * @param bandE Square root of the energy for each band (returned) + */ +void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM, int arch); + +/*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/ + +/** Normalise each band of X such that the energy in each band is + equal to 1 + * @param m Mode data + * @param X Spectrum (returned normalised) + * @param bandE Square root of the energy for each band + */ +void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M); + +/** Denormalise each band of X to restore full amplitude + * @param m Mode data + * @param X Spectrum (returned de-normalised) + * @param bandE Square root of the energy for each band + */ +void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X, + celt_sig * OPUS_RESTRICT freq, const opus_val16 *bandE, int start, + int end, int M, int downsample, int silence); + +#define SPREAD_NONE (0) +#define SPREAD_LIGHT (1) +#define SPREAD_NORMAL (2) +#define SPREAD_AGGRESSIVE (3) + +int spreading_decision(const CELTMode *m, const celt_norm *X, int *average, + int last_decision, int *hf_average, int *tapset_decision, int update_hf, + int end, int C, int M, const int *spread_weight); + +#ifdef MEASURE_NORM_MSE +void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, float *bandE0, int M, int N, int C); +#endif + +void haar1(celt_norm *X, int N0, int stride); + +/** Quantisation/encoding of the residual spectrum + * @param encode flag that indicates whether we're encoding (1) or decoding (0) + * @param m Mode data + * @param start First band to process + * @param end Last band to process + 1 + * @param X Residual (normalised) + * @param Y Residual (normalised) for second channel (or NULL for mono) + * @param collapse_masks Anti-collapse tracking mask + * @param bandE Square root of the energy for each band + * @param pulses Bit allocation (per band) for PVQ + * @param shortBlocks Zero for long blocks, non-zero for short blocks + * @param spread Amount of spreading to use + * @param dual_stereo Zero for MS stereo, non-zero for dual stereo + * @param intensity First band to use intensity stereo + * @param tf_res Time-frequency resolution change + * @param total_bits Total number of bits that can be used for the frame (including the ones already spent) + * @param balance Number of unallocated bits + * @param en Entropy coder state + * @param LM log2() of the number of 2.5 subframes in the frame + * @param codedBands Last band to receive bits + 1 + * @param seed Random generator seed + * @param arch Run-time architecture (see opus_select_arch()) + */ +void quant_all_bands(int encode, const CELTMode *m, int start, int end, + celt_norm * X, celt_norm * Y, unsigned char *collapse_masks, + const celt_ener *bandE, int *pulses, int shortBlocks, int spread, + int dual_stereo, int intensity, int *tf_res, opus_int32 total_bits, + opus_int32 balance, ec_ctx *ec, int M, int codedBands, opus_uint32 *seed, + int complexity, int arch, int disable_inv); + +void anti_collapse(const CELTMode *m, celt_norm *X_, + unsigned char *collapse_masks, int LM, int C, int size, int start, + int end, const opus_val16 *logE, const opus_val16 *prev1logE, + const opus_val16 *prev2logE, const int *pulses, opus_uint32 seed, + int arch); + +opus_uint32 celt_lcg_rand(opus_uint32 seed); + +int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev); + +#endif /* BANDS_H */ -- cgit v1.2.3