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Diffstat (limited to 'src/modules/module-equalizer-sink.c')
| -rw-r--r-- | src/modules/module-equalizer-sink.c | 2277 |
1 files changed, 2277 insertions, 0 deletions
diff --git a/src/modules/module-equalizer-sink.c b/src/modules/module-equalizer-sink.c new file mode 100644 index 0000000..f8a9e95 --- /dev/null +++ b/src/modules/module-equalizer-sink.c @@ -0,0 +1,2277 @@ +/*** + This file is part of PulseAudio. + + This module is based off Lennart Poettering's LADSPA sink and swaps out + LADSPA functionality for a dbus-aware STFT OLA based digital equalizer. + All new work is published under PulseAudio's original license. + + Copyright 2009 Jason Newton <nevion@gmail.com> + + Original Author: + Copyright 2004-2008 Lennart Poettering + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdlib.h> +#include <stdio.h> +#include <float.h> +#include <math.h> +#include <string.h> +#include <stdint.h> + +//#undef __SSE2__ +#ifdef __SSE2__ +#include <xmmintrin.h> +#include <emmintrin.h> +#endif + +#include <fftw3.h> + +#include <pulse/xmalloc.h> +#include <pulse/timeval.h> + +#include <pulsecore/core-rtclock.h> +#include <pulsecore/i18n.h> +#include <pulsecore/aupdate.h> +#include <pulsecore/namereg.h> +#include <pulsecore/sink.h> +#include <pulsecore/module.h> +#include <pulsecore/core-util.h> +#include <pulsecore/modargs.h> +#include <pulsecore/log.h> +#include <pulsecore/rtpoll.h> +#include <pulsecore/sample-util.h> +#include <pulsecore/shared.h> +#include <pulsecore/idxset.h> +#include <pulsecore/strlist.h> +#include <pulsecore/database.h> +#include <pulsecore/protocol-dbus.h> +#include <pulsecore/dbus-util.h> + +PA_MODULE_AUTHOR("Jason Newton"); +PA_MODULE_DESCRIPTION(_("General Purpose Equalizer")); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(false); +PA_MODULE_USAGE( + _("sink_name=<name of the sink> " + "sink_properties=<properties for the sink> " + "sink_master=<sink to connect to> " + "format=<sample format> " + "rate=<sample rate> " + "channels=<number of channels> " + "channel_map=<channel map> " + "autoloaded=<set if this module is being loaded automatically> " + "use_volume_sharing=<yes or no> " + )); + +#define MEMBLOCKQ_MAXLENGTH (16*1024*1024) +#define DEFAULT_AUTOLOADED false + +struct userdata { + pa_module *module; + pa_sink *sink; + pa_sink_input *sink_input; + bool autoloaded; + + size_t channels; + size_t fft_size;//length (res) of fft + size_t window_size;/* + *sliding window size + *effectively chooses R + */ + size_t R;/* the hop size between overlapping windows + * the latency of the filter, calculated from window_size + * based on constraints of COLA and window function + */ + //for twiddling with pulseaudio + size_t overlap_size;//window_size-R + size_t samples_gathered; + size_t input_buffer_max; + //message + float *W;//windowing function (time domain) + float *work_buffer, **input, **overlap_accum; + fftwf_complex *output_window; + fftwf_plan forward_plan, inverse_plan; + //size_t samplings; + + float **Xs; + float ***Hs;//thread updatable copies of the freq response filters (magnitude based) + pa_aupdate **a_H; + pa_memblockq *input_q; + char *output_buffer; + size_t output_buffer_length; + size_t output_buffer_max_length; + pa_memblockq *output_q; + bool first_iteration; + + pa_dbus_protocol *dbus_protocol; + char *dbus_path; + + pa_database *database; + char **base_profiles; + + bool automatic_description; +}; + +static const char* const valid_modargs[] = { + "sink_name", + "sink_properties", + "sink_master", + "format", + "rate", + "channels", + "channel_map", + "autoloaded", + "use_volume_sharing", + NULL +}; + +#define v_size 4 +#define SINKLIST "equalized_sinklist" +#define EQDB "equalizer_db" +#define EQ_STATE_DB "equalizer-state" +#define FILTER_SIZE(u) ((u)->fft_size / 2 + 1) +#define CHANNEL_PROFILE_SIZE(u) (FILTER_SIZE(u) + 1) +#define FILTER_STATE_SIZE(u) (CHANNEL_PROFILE_SIZE(u) * (u)->channels) + +static void dbus_init(struct userdata *u); +static void dbus_done(struct userdata *u); + +static void hanning_window(float *W, size_t window_size) { + /* h=.5*(1-cos(2*pi*j/(window_size+1)), COLA for R=(M+1)/2 */ + for (size_t i = 0; i < window_size; ++i) + W[i] = (float).5 * (1 - cos(2*M_PI*i / (window_size+1))); +} + +static void fix_filter(float *H, size_t fft_size) { + /* divide out the fft gain */ + for (size_t i = 0; i < fft_size / 2 + 1; ++i) + H[i] /= fft_size; +} + +static void interpolate(float *samples, size_t length, uint32_t *xs, float *ys, size_t n_points) { + /* Note that xs must be monotonically increasing! */ + float x_range_lower, x_range_upper, c0; + + pa_assert(n_points >= 2); + pa_assert(xs[0] == 0); + pa_assert(xs[n_points - 1] == length - 1); + + for (size_t x = 0, x_range_lower_i = 0; x < length-1; ++x) { + pa_assert(x_range_lower_i < n_points-1); + + x_range_lower = (float) xs[x_range_lower_i]; + x_range_upper = (float) xs[x_range_lower_i+1]; + + pa_assert_se(x_range_lower < x_range_upper); + pa_assert_se(x >= x_range_lower); + pa_assert_se(x <= x_range_upper); + + /* bilinear-interpolation of coefficients specified */ + c0 = (x-x_range_lower) / (x_range_upper-x_range_lower); + pa_assert(c0 >= 0 && c0 <= 1.0); + + samples[x] = ((1.0f - c0) * ys[x_range_lower_i] + c0 * ys[x_range_lower_i + 1]); + while(x >= xs[x_range_lower_i + 1]) + x_range_lower_i++; + } + + samples[length-1] = ys[n_points-1]; +} + +static bool is_monotonic(const uint32_t *xs, size_t length) { + pa_assert(xs); + + if (length < 2) + return true; + + for(size_t i = 1; i < length; ++i) + if (xs[i] <= xs[i-1]) + return false; + + return true; +} + +/* ensures memory allocated is a multiple of v_size and aligned */ +static void * alloc(size_t x, size_t s) { + size_t f; + float *t; + + f = PA_ROUND_UP(x*s, sizeof(float)*v_size); + pa_assert_se(t = fftwf_malloc(f)); + pa_memzero(t, f); + + return t; +} + +static void alloc_input_buffers(struct userdata *u, size_t min_buffer_length) { + if (min_buffer_length <= u->input_buffer_max) + return; + + pa_assert(min_buffer_length >= u->window_size); + for (size_t c = 0; c < u->channels; ++c) { + float *tmp = alloc(min_buffer_length, sizeof(float)); + if (u->input[c]) { + if (!u->first_iteration) + memcpy(tmp, u->input[c], u->overlap_size * sizeof(float)); + fftwf_free(u->input[c]); + } + u->input[c] = tmp; + } + u->input_buffer_max = min_buffer_length; +} + +/* Called from I/O thread context */ +static int sink_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) { + struct userdata *u = PA_SINK(o)->userdata; + + switch (code) { + + case PA_SINK_MESSAGE_GET_LATENCY: { + //size_t fs=pa_frame_size(&u->sink->sample_spec); + + /* The sink is _put() before the sink input is, so let's + * make sure we don't access it in that time. Also, the + * sink input is first shut down, the sink second. */ + if (!PA_SINK_IS_LINKED(u->sink->thread_info.state) || + !PA_SINK_INPUT_IS_LINKED(u->sink_input->thread_info.state)) { + *((int64_t*) data) = 0; + return 0; + } + + *((int64_t*) data) = + /* Get the latency of the master sink */ + pa_sink_get_latency_within_thread(u->sink_input->sink, true) + + + /* Add the latency internal to our sink input on top */ + pa_bytes_to_usec(pa_memblockq_get_length(u->output_q) + + pa_memblockq_get_length(u->input_q), &u->sink_input->sink->sample_spec) + + pa_bytes_to_usec(pa_memblockq_get_length(u->sink_input->thread_info.render_memblockq), &u->sink_input->sink->sample_spec); + // pa_bytes_to_usec(u->samples_gathered * fs, &u->sink->sample_spec); + //+ pa_bytes_to_usec(u->latency * fs, ss) + return 0; + } + } + + return pa_sink_process_msg(o, code, data, offset, chunk); +} + +/* Called from main context */ +static int sink_set_state_in_main_thread_cb(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause) { + struct userdata *u; + + pa_sink_assert_ref(s); + pa_assert_se(u = s->userdata); + + if (!PA_SINK_IS_LINKED(state) || + !PA_SINK_INPUT_IS_LINKED(u->sink_input->state)) + return 0; + + pa_sink_input_cork(u->sink_input, state == PA_SINK_SUSPENDED); + return 0; +} + +/* Called from the IO thread. */ +static int sink_set_state_in_io_thread_cb(pa_sink *s, pa_sink_state_t new_state, pa_suspend_cause_t new_suspend_cause) { + struct userdata *u; + + pa_assert(s); + pa_assert_se(u = s->userdata); + + /* When set to running or idle for the first time, request a rewind + * of the master sink to make sure we are heard immediately */ + if (PA_SINK_IS_OPENED(new_state) && s->thread_info.state == PA_SINK_INIT) { + pa_log_debug("Requesting rewind due to state change."); + pa_sink_input_request_rewind(u->sink_input, 0, false, true, true); + } + + return 0; +} + +/* Called from I/O thread context */ +static void sink_request_rewind_cb(pa_sink *s) { + struct userdata *u; + + pa_sink_assert_ref(s); + pa_assert_se(u = s->userdata); + + if (!PA_SINK_IS_LINKED(u->sink->thread_info.state) || + !PA_SINK_INPUT_IS_LINKED(u->sink_input->thread_info.state)) + return; + + /* Just hand this one over to the master sink */ + pa_sink_input_request_rewind(u->sink_input, s->thread_info.rewind_nbytes+pa_memblockq_get_length(u->input_q), true, false, false); +} + +/* Called from I/O thread context */ +static void sink_update_requested_latency_cb(pa_sink *s) { + struct userdata *u; + + pa_sink_assert_ref(s); + pa_assert_se(u = s->userdata); + + if (!PA_SINK_IS_LINKED(u->sink->thread_info.state) || + !PA_SINK_INPUT_IS_LINKED(u->sink_input->thread_info.state)) + return; + + /* Just hand this one over to the master sink */ + pa_sink_input_set_requested_latency_within_thread( + u->sink_input, + pa_sink_get_requested_latency_within_thread(s)); +} + +/* Called from main context */ +static void sink_set_volume_cb(pa_sink *s) { + struct userdata *u; + + pa_sink_assert_ref(s); + pa_assert_se(u = s->userdata); + + if (!PA_SINK_IS_LINKED(s->state) || + !PA_SINK_INPUT_IS_LINKED(u->sink_input->state)) + return; + + pa_sink_input_set_volume(u->sink_input, &s->real_volume, s->save_volume, true); +} + +/* Called from main context */ +static void sink_set_mute_cb(pa_sink *s) { + struct userdata *u; + + pa_sink_assert_ref(s); + pa_assert_se(u = s->userdata); + + if (!PA_SINK_IS_LINKED(s->state) || + !PA_SINK_INPUT_IS_LINKED(u->sink_input->state)) + return; + + pa_sink_input_set_mute(u->sink_input, s->muted, s->save_muted); +} + +#if 1 +//reference implementation +static void dsp_logic( + float * restrict dst,//used as a temp array too, needs to be fft_length! + float * restrict src,/*input data w/ overlap at start, + *automatically cycled in routine + */ + float * restrict overlap, + const float X,//multiplier + const float * restrict H,//The freq. magnitude scalers filter + const float * restrict W,//The windowing function + fftwf_complex * restrict output_window,//The transformed windowed src + struct userdata *u) { + + //use a linear-phase sliding STFT and overlap-add method (for each channel) + //window the data + for(size_t j = 0; j < u->window_size; ++j) { + dst[j] = X * W[j] * src[j]; + } + //zero pad the remaining fft window + memset(dst + u->window_size, 0, (u->fft_size - u->window_size) * sizeof(float)); + //Processing is done here! + //do fft + fftwf_execute_dft_r2c(u->forward_plan, dst, output_window); + //perform filtering + for(size_t j = 0; j < FILTER_SIZE(u); ++j) { + u->output_window[j][0] *= H[j]; + u->output_window[j][1] *= H[j]; + } + //inverse fft + fftwf_execute_dft_c2r(u->inverse_plan, output_window, dst); + ////debug: tests overlapping add + ////and negates ALL PREVIOUS processing + ////yields a perfect reconstruction if COLA is held + //for(size_t j = 0; j < u->window_size; ++j) { + // u->work_buffer[j] = u->W[j] * u->input[c][j]; + //} + + //overlap add and preserve overlap component from this window (linear phase) + for(size_t j = 0; j < u->overlap_size; ++j) { + u->work_buffer[j] += overlap[j]; + overlap[j] = dst[u->R + j]; + } + ////debug: tests if basic buffering works + ////shouldn't modify the signal AT ALL (beyond roundoff) + //for(size_t j = 0; j < u->window_size;++j) { + // u->work_buffer[j] = u->input[c][j]; + //} + + //preserve the needed input for the next window's overlap + memmove(src, src + u->R, + (u->samples_gathered - u->R) * sizeof(float) + ); +} +#else +typedef float v4sf __attribute__ ((__aligned__(v_size * sizeof(float)))); +typedef union float_vector { + float f[v_size]; + v4sf v; + __m128 m; +} float_vector_t; + +//regardless of sse enabled, the loops in here assume +//16 byte aligned addresses and memory allocations divisible by v_size +static void dsp_logic( + float * restrict dst,//used as a temp array too, needs to be fft_length! + float * restrict src,/*input data w/ overlap at start, + *automatically cycled in routine + */ + float * restrict overlap,//The size of the overlap + const float X,//multiplier + const float * restrict H,//The freq. magnitude scalers filter + const float * restrict W,//The windowing function + fftwf_complex * restrict output_window,//The transformed windowed src + struct userdata *u) {//Collection of constants + const size_t overlap_size = PA_ROUND_UP(u->overlap_size, v_size); + float_vector_t x; + x.f[0] = x.f[1] = x.f[2] = x.f[3] = X; + + //assert(u->samples_gathered >= u->R); + //use a linear-phase sliding STFT and overlap-add method + for(size_t j = 0; j < u->window_size; j += v_size) { + //dst[j] = W[j] * src[j]; + float_vector_t *d = (float_vector_t*) (dst + j); + float_vector_t *w = (float_vector_t*) (W + j); + float_vector_t *s = (float_vector_t*) (src + j); +//#if __SSE2__ + d->m = _mm_mul_ps(x.m, _mm_mul_ps(w->m, s->m)); +// d->v = x->v * w->v * s->v; +//#endif + } + //zero pad the remaining fft window + memset(dst + u->window_size, 0, (u->fft_size - u->window_size) * sizeof(float)); + + //Processing is done here! + //do fft + fftwf_execute_dft_r2c(u->forward_plan, dst, output_window); + //perform filtering - purely magnitude based + for(size_t j = 0; j < FILTER_SIZE; j += v_size / 2) { + //output_window[j][0]*=H[j]; + //output_window[j][1]*=H[j]; + float_vector_t *d = (float_vector_t*)( ((float *) output_window) + 2 * j); + float_vector_t h; + h.f[0] = h.f[1] = H[j]; + h.f[2] = h.f[3] = H[j + 1]; +//#if __SSE2__ + d->m = _mm_mul_ps(d->m, h.m); +//#else +// d->v = d->v * h.v; +//#endif + } + + //inverse fft + fftwf_execute_dft_c2r(u->inverse_plan, output_window, dst); + + ////debug: tests overlapping add + ////and negates ALL PREVIOUS processing + ////yields a perfect reconstruction if COLA is held + //for(size_t j = 0; j < u->window_size; ++j) { + // dst[j] = W[j] * src[j]; + //} + + //overlap add and preserve overlap component from this window (linear phase) + for(size_t j = 0; j < overlap_size; j += v_size) { + //dst[j]+=overlap[j]; + //overlap[j]+=dst[j+R]; + float_vector_t *d = (float_vector_t*)(dst + j); + float_vector_t *o = (float_vector_t*)(overlap + j); +//#if __SSE2__ + d->m = _mm_add_ps(d->m, o->m); + o->m = ((float_vector_t*)(dst + u->R + j))->m; +//#else +// d->v = d->v + o->v; +// o->v = ((float_vector_t*)(dst + u->R + j))->v; +//#endif + } + //memcpy(overlap, dst+u->R, u->overlap_size * sizeof(float)); //overlap preserve (debug) + //zero out the bit beyond the real overlap so we don't add garbage next iteration + memset(overlap + u->overlap_size, 0, overlap_size - u->overlap_size); + + ////debug: tests if basic buffering works + ////shouldn't modify the signal AT ALL (beyond roundoff) + //for(size_t j = 0; j < u->window_size; ++j) { + // dst[j] = src[j]; + //} + + //preserve the needed input for the next window's overlap + memmove(src, src + u->R, + (u->samples_gathered - u->R) * sizeof(float) + ); +} +#endif + +static void flatten_to_memblockq(struct userdata *u) { + size_t mbs = pa_mempool_block_size_max(u->sink->core->mempool); + pa_memchunk tchunk; + char *dst; + size_t i = 0; + while(i < u->output_buffer_length) { + tchunk.index = 0; + tchunk.length = PA_MIN((u->output_buffer_length - i), mbs); + tchunk.memblock = pa_memblock_new(u->sink->core->mempool, tchunk.length); + //pa_log_debug("pushing %ld into the q", tchunk.length); + dst = pa_memblock_acquire(tchunk.memblock); + memcpy(dst, u->output_buffer + i, tchunk.length); + pa_memblock_release(tchunk.memblock); + pa_memblockq_push(u->output_q, &tchunk); + pa_memblock_unref(tchunk.memblock); + i += tchunk.length; + } +} + +static void process_samples(struct userdata *u) { + size_t fs = pa_frame_size(&(u->sink->sample_spec)); + unsigned a_i; + float *H, X; + size_t iterations, offset; + pa_assert(u->samples_gathered >= u->window_size); + iterations = (u->samples_gathered - u->overlap_size) / u->R; + //make sure there is enough buffer memory allocated + if (iterations * u->R * fs > u->output_buffer_max_length) { + u->output_buffer_max_length = iterations * u->R * fs; + pa_xfree(u->output_buffer); + u->output_buffer = pa_xmalloc(u->output_buffer_max_length); + } + u->output_buffer_length = iterations * u->R * fs; + + for(size_t iter = 0; iter < iterations; ++iter) { + offset = iter * u->R * fs; + for(size_t c = 0;c < u->channels; c++) { + a_i = pa_aupdate_read_begin(u->a_H[c]); + X = u->Xs[c][a_i]; + H = u->Hs[c][a_i]; + dsp_logic( + u->work_buffer, + u->input[c], + u->overlap_accum[c], + X, + H, + u->W, + u->output_window, + u + ); + pa_aupdate_read_end(u->a_H[c]); + if (u->first_iteration) { + /* The windowing function will make the audio ramped in, as a cheap fix we can + * undo the windowing (for non-zero window values) + */ + for(size_t i = 0; i < u->overlap_size; ++i) { + u->work_buffer[i] = u->W[i] <= FLT_EPSILON ? u->work_buffer[i] : u->work_buffer[i] / u->W[i]; + } + } + pa_sample_clamp(PA_SAMPLE_FLOAT32NE, (uint8_t *) (((float *)u->output_buffer) + c) + offset, fs, u->work_buffer, sizeof(float), u->R); + } + if (u->first_iteration) { + u->first_iteration = false; + } + u->samples_gathered -= u->R; + } + flatten_to_memblockq(u); +} + +static void input_buffer(struct userdata *u, pa_memchunk *in) { + size_t fs = pa_frame_size(&(u->sink->sample_spec)); + size_t samples = in->length/fs; + float *src = pa_memblock_acquire_chunk(in); + pa_assert(u->samples_gathered + samples <= u->input_buffer_max); + for(size_t c = 0; c < u->channels; c++) { + //buffer with an offset after the overlap from previous + //iterations + pa_assert_se( + u->input[c] + u->samples_gathered + samples <= u->input[c] + u->input_buffer_max + ); + pa_sample_clamp(PA_SAMPLE_FLOAT32NE, u->input[c] + u->samples_gathered, sizeof(float), src + c, fs, samples); + } + u->samples_gathered += samples; + pa_memblock_release(in->memblock); +} + +/* Called from I/O thread context */ +static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) { + struct userdata *u; + size_t fs, target_samples; + size_t mbs; + //struct timeval start, end; + pa_memchunk tchunk; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + pa_assert(chunk); + pa_assert(u->sink); + + if (!PA_SINK_IS_LINKED(u->sink->thread_info.state)) + return -1; + + /* FIXME: Please clean this up. I see more commented code lines + * than uncommented code lines. I am sorry, but I am too dumb to + * understand this. */ + + fs = pa_frame_size(&(u->sink->sample_spec)); + mbs = pa_mempool_block_size_max(u->sink->core->mempool); + if (pa_memblockq_get_length(u->output_q) > 0) { + //pa_log_debug("qsize is %ld", pa_memblockq_get_length(u->output_q)); + goto END; + } + //nbytes = PA_MIN(nbytes, pa_mempool_block_size_max(u->sink->core->mempool)); + target_samples = PA_ROUND_UP(nbytes / fs, u->R); + ////pa_log_debug("vanilla mbs = %ld",mbs); + //mbs = PA_ROUND_DOWN(mbs / fs, u->R); + //mbs = PA_MAX(mbs, u->R); + //target_samples = PA_MAX(target_samples, mbs); + //pa_log_debug("target samples: %ld", target_samples); + if (u->first_iteration) { + //allocate request_size + target_samples = PA_MAX(target_samples, u->window_size); + }else{ + //allocate request_size + overlap + target_samples += u->overlap_size; + } + alloc_input_buffers(u, target_samples); + //pa_log_debug("post target samples: %ld", target_samples); + chunk->memblock = NULL; + + /* Hmm, process any rewind request that might be queued up */ + pa_sink_process_rewind(u->sink, 0); + + //pa_log_debug("start output-buffered %ld, input-buffered %ld, requested %ld",buffered_samples,u->samples_gathered,samples_requested); + //pa_rtclock_get(&start); + do{ + size_t input_remaining = target_samples - u->samples_gathered; + // pa_log_debug("input remaining %ld samples", input_remaining); + pa_assert(input_remaining > 0); + while (pa_memblockq_peek(u->input_q, &tchunk) < 0) { + //pa_sink_render(u->sink, input_remaining * fs, &tchunk); + pa_sink_render_full(u->sink, PA_MIN(input_remaining * fs, mbs), &tchunk); + pa_memblockq_push(u->input_q, &tchunk); + pa_memblock_unref(tchunk.memblock); + } + pa_assert(tchunk.memblock); + + tchunk.length = PA_MIN(input_remaining * fs, tchunk.length); + + pa_memblockq_drop(u->input_q, tchunk.length); + //pa_log_debug("asked for %ld input samples, got %ld samples",input_remaining,buffer->length/fs); + /* copy new input */ + //pa_rtclock_get(start); + // pa_log_debug("buffering %ld bytes", tchunk.length); + input_buffer(u, &tchunk); + //pa_rtclock_get(&end); + //pa_log_debug("Took %0.5f seconds to setup", pa_timeval_diff(end, start) / (double) PA_USEC_PER_SEC); + pa_memblock_unref(tchunk.memblock); + } while(u->samples_gathered < target_samples); + + //pa_rtclock_get(&end); + //pa_log_debug("Took %0.6f seconds to get data", (double) pa_timeval_diff(&end, &start) / PA_USEC_PER_SEC); + + pa_assert(u->fft_size >= u->window_size); + pa_assert(u->R < u->window_size); + //pa_rtclock_get(&start); + /* process a block */ + process_samples(u); + //pa_rtclock_get(&end); + //pa_log_debug("Took %0.6f seconds to process", (double) pa_timeval_diff(&end, &start) / PA_USEC_PER_SEC); +END: + pa_assert_se(pa_memblockq_peek(u->output_q, chunk) >= 0); + pa_assert(chunk->memblock); + pa_memblockq_drop(u->output_q, chunk->length); + + //pa_log_debug("gave %ld", chunk->length/fs); + //pa_log_debug("end pop"); + return 0; +} + +/* Called from main context */ +static void sink_input_volume_changed_cb(pa_sink_input *i) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + pa_sink_volume_changed(u->sink, &i->volume); +} + +/* Called from main context */ +static void sink_input_mute_changed_cb(pa_sink_input *i) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + pa_sink_mute_changed(u->sink, i->muted); +} + +#if 0 +static void reset_filter(struct userdata *u) { + size_t fs = pa_frame_size(&u->sink->sample_spec); + size_t max_request; + + u->samples_gathered = 0; + + for(size_t i = 0; i < u->channels; ++i) + pa_memzero(u->overlap_accum[i], u->overlap_size * sizeof(float)); + + u->first_iteration = true; + //set buffer size to max request, no overlap copy + max_request = PA_ROUND_UP(pa_sink_input_get_max_request(u->sink_input) / fs , u->R); + max_request = PA_MAX(max_request, u->window_size); + pa_sink_set_max_request_within_thread(u->sink, max_request * fs); +} +#endif + +/* Called from I/O thread context */ +static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) { + struct userdata *u; + size_t amount = 0; + + pa_log_debug("Rewind callback!"); + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + /* If the sink is not yet linked, there is nothing to rewind */ + if (!PA_SINK_IS_LINKED(u->sink->thread_info.state)) + return; + + if (u->sink->thread_info.rewind_nbytes > 0) { + size_t max_rewrite; + + //max_rewrite = nbytes; + max_rewrite = nbytes + pa_memblockq_get_length(u->input_q); + //PA_MIN(pa_memblockq_get_length(u->input_q), nbytes); + amount = PA_MIN(u->sink->thread_info.rewind_nbytes, max_rewrite); + u->sink->thread_info.rewind_nbytes = 0; + + if (amount > 0) { + //invalidate the output q + pa_memblockq_seek(u->input_q, - (int64_t) amount, PA_SEEK_RELATIVE, true); + pa_log("Resetting filter"); + //reset_filter(u); //this is the "proper" thing to do... + } + } + + pa_sink_process_rewind(u->sink, amount); + pa_memblockq_rewind(u->input_q, nbytes); +} + +/* Called from I/O thread context */ +static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + /* FIXME: Too small max_rewind: + * https://bugs.freedesktop.org/show_bug.cgi?id=53709 */ + pa_memblockq_set_maxrewind(u->input_q, nbytes); + pa_sink_set_max_rewind_within_thread(u->sink, nbytes); +} + +/* Called from I/O thread context */ +static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) { + struct userdata *u; + size_t fs; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + fs = pa_frame_size(&u->sink_input->sample_spec); + pa_sink_set_max_request_within_thread(u->sink, PA_ROUND_UP(nbytes / fs, u->R) * fs); +} + +/* Called from I/O thread context */ +static void sink_input_update_sink_latency_range_cb(pa_sink_input *i) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + pa_sink_set_latency_range_within_thread(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency); +} + +/* Called from I/O thread context */ +static void sink_input_update_sink_fixed_latency_cb(pa_sink_input *i) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + pa_sink_set_fixed_latency_within_thread(u->sink, i->sink->thread_info.fixed_latency); +} + +/* Called from I/O thread context */ +static void sink_input_detach_cb(pa_sink_input *i) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + if (PA_SINK_IS_LINKED(u->sink->thread_info.state)) + pa_sink_detach_within_thread(u->sink); + + pa_sink_set_rtpoll(u->sink, NULL); +} + +/* Called from I/O thread context */ +static void sink_input_attach_cb(pa_sink_input *i) { + struct userdata *u; + size_t fs, max_request; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + pa_sink_set_rtpoll(u->sink, i->sink->thread_info.rtpoll); + pa_sink_set_latency_range_within_thread(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency); + pa_sink_set_fixed_latency_within_thread(u->sink, i->sink->thread_info.fixed_latency); + + fs = pa_frame_size(&u->sink_input->sample_spec); + /* set buffer size to max request, no overlap copy */ + max_request = PA_ROUND_UP(pa_sink_input_get_max_request(u->sink_input) / fs, u->R); + max_request = PA_MAX(max_request, u->window_size); + + pa_sink_set_max_request_within_thread(u->sink, max_request * fs); + + /* FIXME: Too small max_rewind: + * https://bugs.freedesktop.org/show_bug.cgi?id=53709 */ + pa_sink_set_max_rewind_within_thread(u->sink, pa_sink_input_get_max_rewind(i)); + + if (PA_SINK_IS_LINKED(u->sink->thread_info.state)) + pa_sink_attach_within_thread(u->sink); +} + +/* Called from main context */ +static void sink_input_kill_cb(pa_sink_input *i) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + /* The order here matters! We first kill the sink so that streams + * can properly be moved away while the sink input is still connected + * to the master. */ + pa_sink_input_cork(u->sink_input, true); + pa_sink_unlink(u->sink); + pa_sink_input_unlink(u->sink_input); + + pa_sink_input_unref(u->sink_input); + u->sink_input = NULL; + + /* Leave u->sink alone for now, it will be cleaned up on module + * unload (and it is needed during unload as well). */ + + pa_module_unload_request(u->module, true); +} + +static void pack(char **strs, size_t len, char **packed, size_t *length) { + size_t t_len = 0; + size_t headers = (1+len) * sizeof(uint16_t); + char *p; + for(size_t i = 0; i < len; ++i) { + t_len += strlen(strs[i]); + } + *length = headers + t_len; + p = *packed = pa_xmalloc0(*length); + *((uint16_t *) p) = (uint16_t) len; + p += sizeof(uint16_t); + for(size_t i = 0; i < len; ++i) { + uint16_t l = strlen(strs[i]); + *((uint16_t *) p) = (uint16_t) l; + p += sizeof(uint16_t); + memcpy(p, strs[i], l); + p += l; + } +} +static void unpack(char *str, size_t length, char ***strs, size_t *len) { + char *p = str; + *len = *((uint16_t *) p); + p += sizeof(uint16_t); + *strs = pa_xnew(char *, *len); + + for(size_t i = 0; i < *len; ++i) { + size_t l = *((uint16_t *) p); + p += sizeof(uint16_t); + (*strs)[i] = pa_xnew(char, l + 1); + memcpy((*strs)[i], p, l); + (*strs)[i][l] = '\0'; + p += l; + } +} +static void save_profile(struct userdata *u, size_t channel, char *name) { + unsigned a_i; + const size_t profile_size = CHANNEL_PROFILE_SIZE(u) * sizeof(float); + float *H_n, *profile; + const float *H; + pa_datum key, data; + profile = pa_xnew0(float, profile_size); + a_i = pa_aupdate_read_begin(u->a_H[channel]); + profile[0] = u->Xs[a_i][channel]; + H = u->Hs[channel][a_i]; + H_n = profile + 1; + for(size_t i = 0 ; i < FILTER_SIZE(u); ++i) { + H_n[i] = H[i] * u->fft_size; + //H_n[i] = H[i]; + } + pa_aupdate_read_end(u->a_H[channel]); + key.data=name; + key.size = strlen(key.data); + data.data = profile; + data.size = profile_size; + pa_database_set(u->database, &key, &data, true); + pa_database_sync(u->database); + if (u->base_profiles[channel]) { + pa_xfree(u->base_profiles[channel]); + } + u->base_profiles[channel] = pa_xstrdup(name); +} + +static void save_state(struct userdata *u) { + unsigned a_i; + const size_t filter_state_size = FILTER_STATE_SIZE(u) * sizeof(float); + float *H_n, *state; + float *H; + pa_datum key, data; + pa_database *database; + char *state_path; + char *packed; + size_t packed_length; + + pack(u->base_profiles, u->channels, &packed, &packed_length); + state = (float *) pa_xmalloc0(filter_state_size + packed_length); + memcpy(state + FILTER_STATE_SIZE(u), packed, packed_length); + pa_xfree(packed); + + for(size_t c = 0; c < u->channels; ++c) { + a_i = pa_aupdate_read_begin(u->a_H[c]); + state[c * CHANNEL_PROFILE_SIZE(u)] = u->Xs[c][a_i]; + H = u->Hs[c][a_i]; + H_n = &state[c * CHANNEL_PROFILE_SIZE(u) + 1]; + memcpy(H_n, H, FILTER_SIZE(u) * sizeof(float)); + pa_aupdate_read_end(u->a_H[c]); + } + + key.data = u->sink->name; + key.size = strlen(key.data); + data.data = state; + data.size = filter_state_size + packed_length; + //thread safety for 0.9.17? + pa_assert_se(state_path = pa_state_path(NULL, false)); + pa_assert_se(database = pa_database_open(state_path, EQ_STATE_DB, false, true)); + pa_xfree(state_path); + + pa_database_set(database, &key, &data, true); + pa_database_sync(database); + pa_database_close(database); + pa_xfree(state); +} + +static void remove_profile(pa_core *c, char *name) { + pa_datum key; + pa_database *database; + key.data = name; + key.size = strlen(key.data); + pa_assert_se(database = pa_shared_get(c, EQDB)); + pa_database_unset(database, &key); + pa_database_sync(database); +} + +static const char* load_profile(struct userdata *u, size_t channel, char *name) { + unsigned a_i; + pa_datum key, value; + const size_t profile_size = CHANNEL_PROFILE_SIZE(u) * sizeof(float); + key.data = name; + key.size = strlen(key.data); + if (pa_database_get(u->database, &key, &value) != NULL) { + if (value.size == profile_size) { + float *profile = (float *) value.data; + a_i = pa_aupdate_write_begin(u->a_H[channel]); + u->Xs[channel][a_i] = profile[0]; + memcpy(u->Hs[channel][a_i], profile + 1, FILTER_SIZE(u) * sizeof(float)); + fix_filter(u->Hs[channel][a_i], u->fft_size); + pa_aupdate_write_end(u->a_H[channel]); + pa_xfree(u->base_profiles[channel]); + u->base_profiles[channel] = pa_xstrdup(name); + }else{ + return "incompatible size"; + } + pa_datum_free(&value); + }else{ + return "profile doesn't exist"; + } + return NULL; +} + +static void load_state(struct userdata *u) { + unsigned a_i; + float *H; + pa_datum key, value; + pa_database *database; + char *state_path; + pa_assert_se(state_path = pa_state_path(NULL, false)); + database = pa_database_open(state_path, EQ_STATE_DB, false, false); + pa_xfree(state_path); + if (!database) { + pa_log("No resume state"); + return; + } + + key.data = u->sink->name; + key.size = strlen(key.data); + + if (pa_database_get(database, &key, &value) != NULL) { + if (value.size > FILTER_STATE_SIZE(u) * sizeof(float) + sizeof(uint16_t)) { + float *state = (float *) value.data; + size_t n_profs; + char **names; + for(size_t c = 0; c < u->channels; ++c) { + a_i = pa_aupdate_write_begin(u->a_H[c]); + H = state + c * CHANNEL_PROFILE_SIZE(u) + 1; + u->Xs[c][a_i] = state[c * CHANNEL_PROFILE_SIZE(u)]; + memcpy(u->Hs[c][a_i], H, FILTER_SIZE(u) * sizeof(float)); + pa_aupdate_write_end(u->a_H[c]); + } + unpack(((char *)value.data) + FILTER_STATE_SIZE(u) * sizeof(float), value.size - FILTER_STATE_SIZE(u) * sizeof(float), &names, &n_profs); + n_profs = PA_MIN(n_profs, u->channels); + for(size_t c = 0; c < n_profs; ++c) { + pa_xfree(u->base_profiles[c]); + u->base_profiles[c] = names[c]; + } + pa_xfree(names); + } + pa_datum_free(&value); + }else{ + pa_log("resume state exists but is wrong size!"); + } + pa_database_close(database); +} + +/* Called from main context */ +static bool sink_input_may_move_to_cb(pa_sink_input *i, pa_sink *dest) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + return u->sink != dest; +} + +/* Called from main context */ +static void sink_input_moving_cb(pa_sink_input *i, pa_sink *dest) { + struct userdata *u; + + pa_sink_input_assert_ref(i); + pa_assert_se(u = i->userdata); + + if (u->autoloaded) { + /* We were autoloaded, and don't support moving. Let's unload ourselves. */ + pa_log_debug("Can't move autoloaded stream, unloading"); + pa_module_unload_request(u->module, true); + } + + if (dest) { + pa_sink_set_asyncmsgq(u->sink, dest->asyncmsgq); + pa_sink_update_flags(u->sink, PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY, dest->flags); + + if (u->automatic_description) { + const char *master_description; + char *new_description; + + master_description = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION); + new_description = pa_sprintf_malloc(_("FFT based equalizer on %s"), + master_description ? master_description : dest->name); + pa_sink_set_description(u->sink, new_description); + pa_xfree(new_description); + } + } else + pa_sink_set_asyncmsgq(u->sink, NULL); +} + +int pa__init(pa_module*m) { + struct userdata *u; + pa_sample_spec ss; + pa_channel_map map; + pa_modargs *ma; + pa_sink *master; + pa_sink_input_new_data sink_input_data; + pa_sink_new_data sink_data; + size_t i; + unsigned c; + float *H; + unsigned a_i; + bool use_volume_sharing = true; + + pa_assert(m); + + pa_log_warn("module-equalizer-sink is currently unsupported, and can sometimes cause " + "PulseAudio crashes, increased latency or audible artifacts."); + pa_log_warn("If you're facing audio problems, try unloading this module as a potential workaround."); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log("Failed to parse module arguments."); + goto fail; + } + + if (!(master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sink_master", NULL), PA_NAMEREG_SINK))) { + pa_log("Master sink not found"); + goto fail; + } + + ss = master->sample_spec; + ss.format = PA_SAMPLE_FLOAT32; + map = master->channel_map; + if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) { + pa_log("Invalid sample format specification or channel map"); + goto fail; + } + + //fs = pa_frame_size(&ss); + + if (pa_modargs_get_value_boolean(ma, "use_volume_sharing", &use_volume_sharing) < 0) { + pa_log("use_volume_sharing= expects a boolean argument"); + goto fail; + } + + u = pa_xnew0(struct userdata, 1); + u->module = m; + m->userdata = u; + + u->channels = ss.channels; + u->fft_size = pow(2, ceil(log(ss.rate) / log(2)));//probably unstable near corner cases of powers of 2 + pa_log_debug("fft size: %zd", u->fft_size); + u->window_size = 15999; + if (u->window_size % 2 == 0) + u->window_size--; + u->R = (u->window_size + 1) / 2; + u->overlap_size = u->window_size - u->R; + u->samples_gathered = 0; + u->input_buffer_max = 0; + + u->a_H = pa_xnew0(pa_aupdate *, u->channels); + u->Xs = pa_xnew0(float *, u->channels); + u->Hs = pa_xnew0(float **, u->channels); + + for (c = 0; c < u->channels; ++c) { + u->Xs[c] = pa_xnew0(float, 2); + u->Hs[c] = pa_xnew0(float *, 2); + for (i = 0; i < 2; ++i) + u->Hs[c][i] = alloc(FILTER_SIZE(u), sizeof(float)); + } + + u->W = alloc(u->window_size, sizeof(float)); + u->work_buffer = alloc(u->fft_size, sizeof(float)); + u->input = pa_xnew0(float *, u->channels); + u->overlap_accum = pa_xnew0(float *, u->channels); + for (c = 0; c < u->channels; ++c) { + u->a_H[c] = pa_aupdate_new(); + u->input[c] = NULL; + u->overlap_accum[c] = alloc(u->overlap_size, sizeof(float)); + } + u->output_window = alloc(FILTER_SIZE(u), sizeof(fftwf_complex)); + u->forward_plan = fftwf_plan_dft_r2c_1d(u->fft_size, u->work_buffer, u->output_window, FFTW_ESTIMATE); + u->inverse_plan = fftwf_plan_dft_c2r_1d(u->fft_size, u->output_window, u->work_buffer, FFTW_ESTIMATE); + + hanning_window(u->W, u->window_size); + u->first_iteration = true; + + u->base_profiles = pa_xnew0(char *, u->channels); + for (c = 0; c < u->channels; ++c) + u->base_profiles[c] = pa_xstrdup("default"); + + /* Create sink */ + pa_sink_new_data_init(&sink_data); + sink_data.driver = __FILE__; + sink_data.module = m; + if (!(sink_data.name = pa_xstrdup(pa_modargs_get_value(ma, "sink_name", NULL)))) + sink_data.name = pa_sprintf_malloc("%s.equalizer", master->name); + pa_sink_new_data_set_sample_spec(&sink_data, &ss); + pa_sink_new_data_set_channel_map(&sink_data, &map); + + pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name); + pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_CLASS, "filter"); + + if (pa_modargs_get_proplist(ma, "sink_properties", sink_data.proplist, PA_UPDATE_REPLACE) < 0) { + pa_log("Invalid properties"); + pa_sink_new_data_done(&sink_data); + goto fail; + } + + if (!pa_proplist_contains(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION)) { + const char *master_description; + + master_description = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION); + pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, + _("FFT based equalizer on %s"), master_description ? master_description : master->name); + u->automatic_description = true; + } + + u->autoloaded = DEFAULT_AUTOLOADED; + if (pa_modargs_get_value_boolean(ma, "autoloaded", &u->autoloaded) < 0) { + pa_log("Failed to parse autoloaded value"); + goto fail; + } + + u->sink = pa_sink_new(m->core, &sink_data, (master->flags & (PA_SINK_LATENCY | PA_SINK_DYNAMIC_LATENCY)) + | (use_volume_sharing ? PA_SINK_SHARE_VOLUME_WITH_MASTER : 0)); + pa_sink_new_data_done(&sink_data); + + if (!u->sink) { + pa_log("Failed to create sink."); + goto fail; + } + + u->sink->parent.process_msg = sink_process_msg_cb; + u->sink->set_state_in_main_thread = sink_set_state_in_main_thread_cb; + u->sink->set_state_in_io_thread = sink_set_state_in_io_thread_cb; + u->sink->update_requested_latency = sink_update_requested_latency_cb; + u->sink->request_rewind = sink_request_rewind_cb; + pa_sink_set_set_mute_callback(u->sink, sink_set_mute_cb); + if (!use_volume_sharing) { + pa_sink_set_set_volume_callback(u->sink, sink_set_volume_cb); + pa_sink_enable_decibel_volume(u->sink, true); + } + u->sink->userdata = u; + + u->input_q = pa_memblockq_new("module-equalizer-sink input_q", 0, MEMBLOCKQ_MAXLENGTH, 0, &ss, 1, 1, 0, &u->sink->silence); + u->output_q = pa_memblockq_new("module-equalizer-sink output_q", 0, MEMBLOCKQ_MAXLENGTH, 0, &ss, 1, 1, 0, NULL); + u->output_buffer = NULL; + u->output_buffer_length = 0; + u->output_buffer_max_length = 0; + + pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq); + //pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(u->R*fs, &ss)); + + /* Create sink input */ + pa_sink_input_new_data_init(&sink_input_data); + sink_input_data.driver = __FILE__; + sink_input_data.module = m; + pa_sink_input_new_data_set_sink(&sink_input_data, master, false, true); + sink_input_data.origin_sink = u->sink; + pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_NAME, "Equalized Stream"); + pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "filter"); + pa_sink_input_new_data_set_sample_spec(&sink_input_data, &ss); + pa_sink_input_new_data_set_channel_map(&sink_input_data, &map); + sink_input_data.flags |= PA_SINK_INPUT_START_CORKED; + + pa_sink_input_new(&u->sink_input, m->core, &sink_input_data); + pa_sink_input_new_data_done(&sink_input_data); + + if (!u->sink_input) + goto fail; + + u->sink_input->pop = sink_input_pop_cb; + u->sink_input->process_rewind = sink_input_process_rewind_cb; + u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb; + u->sink_input->update_max_request = sink_input_update_max_request_cb; + u->sink_input->update_sink_latency_range = sink_input_update_sink_latency_range_cb; + u->sink_input->update_sink_fixed_latency = sink_input_update_sink_fixed_latency_cb; + u->sink_input->kill = sink_input_kill_cb; + u->sink_input->attach = sink_input_attach_cb; + u->sink_input->detach = sink_input_detach_cb; + u->sink_input->may_move_to = sink_input_may_move_to_cb; + u->sink_input->moving = sink_input_moving_cb; + if (!use_volume_sharing) + u->sink_input->volume_changed = sink_input_volume_changed_cb; + u->sink_input->mute_changed = sink_input_mute_changed_cb; + u->sink_input->userdata = u; + + u->sink->input_to_master = u->sink_input; + + dbus_init(u); + + /* default filter to these */ + for (c = 0; c< u->channels; ++c) { + a_i = pa_aupdate_write_begin(u->a_H[c]); + H = u->Hs[c][a_i]; + u->Xs[c][a_i] = 1.0f; + + for(i = 0; i < FILTER_SIZE(u); ++i) + H[i] = 1.0 / sqrtf(2.0f); + + fix_filter(H, u->fft_size); + pa_aupdate_write_end(u->a_H[c]); + } + + /* load old parameters */ + load_state(u); + + /* The order here is important. The input must be put first, + * otherwise streams might attach to the sink before the sink + * input is attached to the master. */ + pa_sink_input_put(u->sink_input); + pa_sink_put(u->sink); + pa_sink_input_cork(u->sink_input, false); + + pa_modargs_free(ma); + + return 0; + +fail: + if (ma) + pa_modargs_free(ma); + + pa__done(m); + + return -1; +} + +int pa__get_n_used(pa_module *m) { + struct userdata *u; + + pa_assert(m); + pa_assert_se(u = m->userdata); + + return pa_sink_linked_by(u->sink); +} + +void pa__done(pa_module*m) { + struct userdata *u; + unsigned c; + + pa_assert(m); + + if (!(u = m->userdata)) + return; + + save_state(u); + + dbus_done(u); + + for(c = 0; c < u->channels; ++c) + pa_xfree(u->base_profiles[c]); + pa_xfree(u->base_profiles); + + /* See comments in sink_input_kill_cb() above regarding + * destruction order! */ + + if (u->sink_input) + pa_sink_input_cork(u->sink_input, true); + + if (u->sink) + pa_sink_unlink(u->sink); + + if (u->sink_input) { + pa_sink_input_unlink(u->sink_input); + pa_sink_input_unref(u->sink_input); +} + + if (u->sink) + pa_sink_unref(u->sink); + + pa_xfree(u->output_buffer); + pa_memblockq_free(u->output_q); + pa_memblockq_free(u->input_q); + + fftwf_destroy_plan(u->inverse_plan); + fftwf_destroy_plan(u->forward_plan); + fftwf_free(u->output_window); + for (c = 0; c < u->channels; ++c) { + pa_aupdate_free(u->a_H[c]); + fftwf_free(u->overlap_accum[c]); + fftwf_free(u->input[c]); + } + pa_xfree(u->a_H); + pa_xfree(u->overlap_accum); + pa_xfree(u->input); + fftwf_free(u->work_buffer); + fftwf_free(u->W); + for (c = 0; c < u->channels; ++c) { + pa_xfree(u->Xs[c]); + for (size_t i = 0; i < 2; ++i) + fftwf_free(u->Hs[c][i]); + fftwf_free(u->Hs[c]); + } + pa_xfree(u->Xs); + pa_xfree(u->Hs); + + pa_xfree(u); +} + +/* + * DBus Routines and Callbacks + */ +#define EXTNAME "org.PulseAudio.Ext.Equalizing1" +#define MANAGER_PATH "/org/pulseaudio/equalizing1" +#define MANAGER_IFACE EXTNAME ".Manager" +#define EQUALIZER_IFACE EXTNAME ".Equalizer" +static void manager_get_revision(DBusConnection *conn, DBusMessage *msg, void *_u); +static void manager_get_sinks(DBusConnection *conn, DBusMessage *msg, void *_u); +static void manager_get_profiles(DBusConnection *conn, DBusMessage *msg, void *_u); +static void manager_get_all(DBusConnection *conn, DBusMessage *msg, void *_u); +static void manager_handle_remove_profile(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_get_revision(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_get_sample_rate(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_get_filter_rate(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_get_n_coefs(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_get_n_channels(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_get_all(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_seed_filter(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_get_filter_points(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_get_filter(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_set_filter(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_save_profile(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_load_profile(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_save_state(DBusConnection *conn, DBusMessage *msg, void *_u); +static void equalizer_handle_get_profile_name(DBusConnection *conn, DBusMessage *msg, void *_u); +enum manager_method_index { + MANAGER_METHOD_REMOVE_PROFILE, + MANAGER_METHOD_MAX +}; + +pa_dbus_arg_info remove_profile_args[]={ + {"name", "s","in"}, +}; + +static pa_dbus_method_handler manager_methods[MANAGER_METHOD_MAX]={ + [MANAGER_METHOD_REMOVE_PROFILE]={ + .method_name="RemoveProfile", + .arguments=remove_profile_args, + .n_arguments=sizeof(remove_profile_args)/sizeof(pa_dbus_arg_info), + .receive_cb=manager_handle_remove_profile} +}; + +enum manager_handler_index { + MANAGER_HANDLER_REVISION, + MANAGER_HANDLER_EQUALIZED_SINKS, + MANAGER_HANDLER_PROFILES, + MANAGER_HANDLER_MAX +}; + +static pa_dbus_property_handler manager_handlers[MANAGER_HANDLER_MAX]={ + [MANAGER_HANDLER_REVISION]={.property_name="InterfaceRevision",.type="u",.get_cb=manager_get_revision,.set_cb=NULL}, + [MANAGER_HANDLER_EQUALIZED_SINKS]={.property_name="EqualizedSinks",.type="ao",.get_cb=manager_get_sinks,.set_cb=NULL}, + [MANAGER_HANDLER_PROFILES]={.property_name="Profiles",.type="as",.get_cb=manager_get_profiles,.set_cb=NULL} +}; + +pa_dbus_arg_info sink_args[]={ + {"sink", "o", NULL} +}; + +enum manager_signal_index{ + MANAGER_SIGNAL_SINK_ADDED, + MANAGER_SIGNAL_SINK_REMOVED, + MANAGER_SIGNAL_PROFILES_CHANGED, + MANAGER_SIGNAL_MAX +}; + +static pa_dbus_signal_info manager_signals[MANAGER_SIGNAL_MAX]={ + [MANAGER_SIGNAL_SINK_ADDED]={.name="SinkAdded", .arguments=sink_args, .n_arguments=sizeof(sink_args)/sizeof(pa_dbus_arg_info)}, + [MANAGER_SIGNAL_SINK_REMOVED]={.name="SinkRemoved", .arguments=sink_args, .n_arguments=sizeof(sink_args)/sizeof(pa_dbus_arg_info)}, + [MANAGER_SIGNAL_PROFILES_CHANGED]={.name="ProfilesChanged", .arguments=NULL, .n_arguments=0} +}; + +static pa_dbus_interface_info manager_info={ + .name=MANAGER_IFACE, + .method_handlers=manager_methods, + .n_method_handlers=MANAGER_METHOD_MAX, + .property_handlers=manager_handlers, + .n_property_handlers=MANAGER_HANDLER_MAX, + .get_all_properties_cb=manager_get_all, + .signals=manager_signals, + .n_signals=MANAGER_SIGNAL_MAX +}; + +enum equalizer_method_index { + EQUALIZER_METHOD_FILTER_POINTS, + EQUALIZER_METHOD_SEED_FILTER, + EQUALIZER_METHOD_SAVE_PROFILE, + EQUALIZER_METHOD_LOAD_PROFILE, + EQUALIZER_METHOD_SET_FILTER, + EQUALIZER_METHOD_GET_FILTER, + EQUALIZER_METHOD_SAVE_STATE, + EQUALIZER_METHOD_GET_PROFILE_NAME, + EQUALIZER_METHOD_MAX +}; + +enum equalizer_handler_index { + EQUALIZER_HANDLER_REVISION, + EQUALIZER_HANDLER_SAMPLERATE, + EQUALIZER_HANDLER_FILTERSAMPLERATE, + EQUALIZER_HANDLER_N_COEFS, + EQUALIZER_HANDLER_N_CHANNELS, + EQUALIZER_HANDLER_MAX +}; + +pa_dbus_arg_info filter_points_args[]={ + {"channel", "u","in"}, + {"xs", "au","in"}, + {"ys", "ad","out"}, + {"preamp", "d","out"} +}; +pa_dbus_arg_info seed_filter_args[]={ + {"channel", "u","in"}, + {"xs", "au","in"}, + {"ys", "ad","in"}, + {"preamp", "d","in"} +}; + +pa_dbus_arg_info set_filter_args[]={ + {"channel", "u","in"}, + {"ys", "ad","in"}, + {"preamp", "d","in"} +}; +pa_dbus_arg_info get_filter_args[]={ + {"channel", "u","in"}, + {"ys", "ad","out"}, + {"preamp", "d","out"} +}; + +pa_dbus_arg_info save_profile_args[]={ + {"channel", "u","in"}, + {"name", "s","in"} +}; +pa_dbus_arg_info load_profile_args[]={ + {"channel", "u","in"}, + {"name", "s","in"} +}; +pa_dbus_arg_info base_profile_name_args[]={ + {"channel", "u","in"}, + {"name", "s","out"} +}; + +static pa_dbus_method_handler equalizer_methods[EQUALIZER_METHOD_MAX]={ + [EQUALIZER_METHOD_SEED_FILTER]={ + .method_name="SeedFilter", + .arguments=seed_filter_args, + .n_arguments=sizeof(seed_filter_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_seed_filter}, + [EQUALIZER_METHOD_FILTER_POINTS]={ + .method_name="FilterAtPoints", + .arguments=filter_points_args, + .n_arguments=sizeof(filter_points_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_get_filter_points}, + [EQUALIZER_METHOD_SET_FILTER]={ + .method_name="SetFilter", + .arguments=set_filter_args, + .n_arguments=sizeof(set_filter_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_set_filter}, + [EQUALIZER_METHOD_GET_FILTER]={ + .method_name="GetFilter", + .arguments=get_filter_args, + .n_arguments=sizeof(get_filter_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_get_filter}, + [EQUALIZER_METHOD_SAVE_PROFILE]={ + .method_name="SaveProfile", + .arguments=save_profile_args, + .n_arguments=sizeof(save_profile_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_save_profile}, + [EQUALIZER_METHOD_LOAD_PROFILE]={ + .method_name="LoadProfile", + .arguments=load_profile_args, + .n_arguments=sizeof(load_profile_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_load_profile}, + [EQUALIZER_METHOD_SAVE_STATE]={ + .method_name="SaveState", + .arguments=NULL, + .n_arguments=0, + .receive_cb=equalizer_handle_save_state}, + [EQUALIZER_METHOD_GET_PROFILE_NAME]={ + .method_name="BaseProfile", + .arguments=base_profile_name_args, + .n_arguments=sizeof(base_profile_name_args)/sizeof(pa_dbus_arg_info), + .receive_cb=equalizer_handle_get_profile_name} +}; + +static pa_dbus_property_handler equalizer_handlers[EQUALIZER_HANDLER_MAX]={ + [EQUALIZER_HANDLER_REVISION]={.property_name="InterfaceRevision",.type="u",.get_cb=equalizer_get_revision,.set_cb=NULL}, + [EQUALIZER_HANDLER_SAMPLERATE]={.property_name="SampleRate",.type="u",.get_cb=equalizer_get_sample_rate,.set_cb=NULL}, + [EQUALIZER_HANDLER_FILTERSAMPLERATE]={.property_name="FilterSampleRate",.type="u",.get_cb=equalizer_get_filter_rate,.set_cb=NULL}, + [EQUALIZER_HANDLER_N_COEFS]={.property_name="NFilterCoefficients",.type="u",.get_cb=equalizer_get_n_coefs,.set_cb=NULL}, + [EQUALIZER_HANDLER_N_CHANNELS]={.property_name="NChannels",.type="u",.get_cb=equalizer_get_n_channels,.set_cb=NULL}, +}; + +enum equalizer_signal_index{ + EQUALIZER_SIGNAL_FILTER_CHANGED, + EQUALIZER_SIGNAL_SINK_RECONFIGURED, + EQUALIZER_SIGNAL_MAX +}; + +static pa_dbus_signal_info equalizer_signals[EQUALIZER_SIGNAL_MAX]={ + [EQUALIZER_SIGNAL_FILTER_CHANGED]={.name="FilterChanged", .arguments=NULL, .n_arguments=0}, + [EQUALIZER_SIGNAL_SINK_RECONFIGURED]={.name="SinkReconfigured", .arguments=NULL, .n_arguments=0}, +}; + +static pa_dbus_interface_info equalizer_info={ + .name=EQUALIZER_IFACE, + .method_handlers=equalizer_methods, + .n_method_handlers=EQUALIZER_METHOD_MAX, + .property_handlers=equalizer_handlers, + .n_property_handlers=EQUALIZER_HANDLER_MAX, + .get_all_properties_cb=equalizer_get_all, + .signals=equalizer_signals, + .n_signals=EQUALIZER_SIGNAL_MAX +}; + +void dbus_init(struct userdata *u) { + uint32_t dummy; + DBusMessage *message = NULL; + pa_idxset *sink_list = NULL; + u->dbus_protocol=pa_dbus_protocol_get(u->sink->core); + u->dbus_path=pa_sprintf_malloc("/org/pulseaudio/core1/sink%d", u->sink->index); + + pa_assert_se(pa_dbus_protocol_add_interface(u->dbus_protocol, u->dbus_path, &equalizer_info, u) >= 0); + sink_list = pa_shared_get(u->sink->core, SINKLIST); + u->database = pa_shared_get(u->sink->core, EQDB); + if (sink_list == NULL) { + char *state_path; + sink_list=pa_idxset_new(&pa_idxset_trivial_hash_func, &pa_idxset_trivial_compare_func); + pa_shared_set(u->sink->core, SINKLIST, sink_list); + pa_assert_se(state_path = pa_state_path(NULL, false)); + pa_assert_se(u->database = pa_database_open(state_path, "equalizer-presets", false, true)); + pa_xfree(state_path); + pa_shared_set(u->sink->core, EQDB, u->database); + pa_dbus_protocol_add_interface(u->dbus_protocol, MANAGER_PATH, &manager_info, u->sink->core); + pa_dbus_protocol_register_extension(u->dbus_protocol, EXTNAME); + } + pa_idxset_put(sink_list, u, &dummy); + + pa_assert_se((message = dbus_message_new_signal(MANAGER_PATH, MANAGER_IFACE, manager_signals[MANAGER_SIGNAL_SINK_ADDED].name))); + dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &u->dbus_path, DBUS_TYPE_INVALID); + pa_dbus_protocol_send_signal(u->dbus_protocol, message); + dbus_message_unref(message); +} + +void dbus_done(struct userdata *u) { + pa_idxset *sink_list; + uint32_t dummy; + + DBusMessage *message = NULL; + pa_assert_se((message = dbus_message_new_signal(MANAGER_PATH, MANAGER_IFACE, manager_signals[MANAGER_SIGNAL_SINK_REMOVED].name))); + dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &u->dbus_path, DBUS_TYPE_INVALID); + pa_dbus_protocol_send_signal(u->dbus_protocol, message); + dbus_message_unref(message); + + pa_assert_se(sink_list=pa_shared_get(u->sink->core,SINKLIST)); + pa_idxset_remove_by_data(sink_list,u,&dummy); + if (pa_idxset_size(sink_list) == 0) { + pa_dbus_protocol_unregister_extension(u->dbus_protocol, EXTNAME); + pa_dbus_protocol_remove_interface(u->dbus_protocol, MANAGER_PATH, manager_info.name); + pa_shared_remove(u->sink->core, EQDB); + pa_database_close(u->database); + pa_shared_remove(u->sink->core, SINKLIST); + pa_xfree(sink_list); + } + pa_dbus_protocol_remove_interface(u->dbus_protocol, u->dbus_path, equalizer_info.name); + pa_xfree(u->dbus_path); + pa_dbus_protocol_unref(u->dbus_protocol); +} + +void manager_handle_remove_profile(DBusConnection *conn, DBusMessage *msg, void *_u) { + DBusError error; + pa_core *c = (pa_core *)_u; + DBusMessage *message = NULL; + pa_dbus_protocol *dbus_protocol; + char *name; + pa_assert(conn); + pa_assert(msg); + pa_assert(c); + dbus_error_init(&error); + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + remove_profile(c,name); + pa_dbus_send_empty_reply(conn, msg); + + pa_assert_se((message = dbus_message_new_signal(MANAGER_PATH, MANAGER_IFACE, manager_signals[MANAGER_SIGNAL_PROFILES_CHANGED].name))); + dbus_protocol = pa_dbus_protocol_get(c); + pa_dbus_protocol_send_signal(dbus_protocol, message); + pa_dbus_protocol_unref(dbus_protocol); + dbus_message_unref(message); +} + +void manager_get_revision(DBusConnection *conn, DBusMessage *msg, void *_u) { + uint32_t rev=1; + pa_dbus_send_basic_value_reply(conn, msg, DBUS_TYPE_UINT32, &rev); +} + +static void get_sinks(pa_core *u, char ***names, unsigned *n_sinks) { + void *iter = NULL; + struct userdata *sink_u = NULL; + uint32_t dummy; + pa_idxset *sink_list; + pa_assert(u); + pa_assert(names); + pa_assert(n_sinks); + + pa_assert_se(sink_list = pa_shared_get(u, SINKLIST)); + *n_sinks = (unsigned) pa_idxset_size(sink_list); + *names = *n_sinks > 0 ? pa_xnew0(char *,*n_sinks) : NULL; + for(uint32_t i = 0; i < *n_sinks; ++i) { + sink_u = (struct userdata *) pa_idxset_iterate(sink_list, &iter, &dummy); + (*names)[i] = pa_xstrdup(sink_u->dbus_path); + } +} + +void manager_get_sinks(DBusConnection *conn, DBusMessage *msg, void *_u) { + unsigned n; + char **names = NULL; + pa_assert(conn); + pa_assert(msg); + pa_assert(_u); + + get_sinks((pa_core *) _u, &names, &n); + pa_dbus_send_basic_array_variant_reply(conn, msg, DBUS_TYPE_OBJECT_PATH, names, n); + for(unsigned i = 0; i < n; ++i) { + pa_xfree(names[i]); + } + pa_xfree(names); +} + +static void get_profiles(pa_core *c, char ***names, unsigned *n) { + char *name; + pa_database *database; + pa_datum key, next_key; + pa_strlist *head=NULL, *iter; + bool done; + pa_assert_se(database = pa_shared_get(c, EQDB)); + + pa_assert(c); + pa_assert(names); + pa_assert(n); + done = !pa_database_first(database, &key, NULL); + *n = 0; + while(!done) { + done = !pa_database_next(database, &key, &next_key, NULL); + name=pa_xmalloc(key.size + 1); + memcpy(name, key.data, key.size); + name[key.size] = '\0'; + pa_datum_free(&key); + head = pa_strlist_prepend(head, name); + pa_xfree(name); + key = next_key; + (*n)++; + } + (*names) = *n > 0 ? pa_xnew0(char *, *n) : NULL; + iter=head; + for(unsigned i = 0; i < *n; ++i) { + (*names)[*n - 1 - i] = pa_xstrdup(pa_strlist_data(iter)); + iter = pa_strlist_next(iter); + } + pa_strlist_free(head); +} + +void manager_get_profiles(DBusConnection *conn, DBusMessage *msg, void *_u) { + char **names; + unsigned n; + pa_assert(conn); + pa_assert(msg); + pa_assert(_u); + + get_profiles((pa_core *)_u, &names, &n); + pa_dbus_send_basic_array_variant_reply(conn, msg, DBUS_TYPE_STRING, names, n); + for(unsigned i = 0; i < n; ++i) { + pa_xfree(names[i]); + } + pa_xfree(names); +} + +void manager_get_all(DBusConnection *conn, DBusMessage *msg, void *_u) { + pa_core *c; + char **names = NULL; + unsigned n; + DBusMessage *reply = NULL; + DBusMessageIter msg_iter, dict_iter; + uint32_t rev; + pa_assert(conn); + pa_assert(msg); + pa_assert_se(c = _u); + + pa_assert_se((reply = dbus_message_new_method_return(msg))); + dbus_message_iter_init_append(reply, &msg_iter); + pa_assert_se(dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "{sv}", &dict_iter)); + + rev = 1; + pa_dbus_append_basic_variant_dict_entry(&dict_iter, manager_handlers[MANAGER_HANDLER_REVISION].property_name, DBUS_TYPE_UINT32, &rev); + + get_sinks(c, &names, &n); + pa_dbus_append_basic_array_variant_dict_entry(&dict_iter,manager_handlers[MANAGER_HANDLER_EQUALIZED_SINKS].property_name, DBUS_TYPE_OBJECT_PATH, names, n); + for(unsigned i = 0; i < n; ++i) { + pa_xfree(names[i]); + } + pa_xfree(names); + + get_profiles(c, &names, &n); + pa_dbus_append_basic_array_variant_dict_entry(&dict_iter, manager_handlers[MANAGER_HANDLER_PROFILES].property_name, DBUS_TYPE_STRING, names, n); + for(unsigned i = 0; i < n; ++i) { + pa_xfree(names[i]); + } + pa_xfree(names); + pa_assert_se(dbus_message_iter_close_container(&msg_iter, &dict_iter)); + pa_assert_se(dbus_connection_send(conn, reply, NULL)); + dbus_message_unref(reply); +} + +void equalizer_handle_seed_filter(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u = _u; + DBusError error; + DBusMessage *message = NULL; + float *ys; + uint32_t *xs, channel, r_channel; + double *_ys, preamp; + unsigned x_npoints, y_npoints, a_i; + float *H; + bool points_good = true; + + pa_assert(conn); + pa_assert(msg); + pa_assert(u); + + dbus_error_init(&error); + + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &xs, &x_npoints, + DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE, &_ys, &y_npoints, + DBUS_TYPE_DOUBLE, &preamp, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + for(size_t i = 0; i < x_npoints; ++i) { + if (xs[i] >= FILTER_SIZE(u)) { + points_good = false; + break; + } + } + if (!is_monotonic(xs, x_npoints) || !points_good) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "xs must be monotonic and 0<=x<=%zd", u->fft_size / 2); + dbus_error_free(&error); + return; + }else if (x_npoints != y_npoints || x_npoints < 2 || x_npoints > FILTER_SIZE(u)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "xs and ys must be the same length and 2<=l<=%zd!", FILTER_SIZE(u)); + dbus_error_free(&error); + return; + }else if (xs[0] != 0 || xs[x_npoints - 1] != u->fft_size / 2) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "xs[0] must be 0 and xs[-1]=fft_size/2"); + dbus_error_free(&error); + return; + } + + ys = pa_xmalloc(x_npoints * sizeof(float)); + for(uint32_t i = 0; i < x_npoints; ++i) { + ys[i] = (float) _ys[i]; + } + r_channel = channel == u->channels ? 0 : channel; + a_i = pa_aupdate_write_begin(u->a_H[r_channel]); + H = u->Hs[r_channel][a_i]; + u->Xs[r_channel][a_i] = preamp; + interpolate(H, FILTER_SIZE(u), xs, ys, x_npoints); + fix_filter(H, u->fft_size); + if (channel == u->channels) { + for(size_t c = 1; c < u->channels; ++c) { + unsigned b_i = pa_aupdate_write_begin(u->a_H[c]); + float *H_p = u->Hs[c][b_i]; + u->Xs[c][b_i] = preamp; + memcpy(H_p, H, FILTER_SIZE(u) * sizeof(float)); + pa_aupdate_write_end(u->a_H[c]); + } + } + pa_aupdate_write_end(u->a_H[r_channel]); + pa_xfree(ys); + + pa_dbus_send_empty_reply(conn, msg); + + pa_assert_se((message = dbus_message_new_signal(u->dbus_path, EQUALIZER_IFACE, equalizer_signals[EQUALIZER_SIGNAL_FILTER_CHANGED].name))); + pa_dbus_protocol_send_signal(u->dbus_protocol, message); + dbus_message_unref(message); +} + +void equalizer_handle_get_filter_points(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u = (struct userdata *) _u; + uint32_t *xs, channel, r_channel; + double *ys, preamp; + unsigned x_npoints, a_i; + float *H; + bool points_good=true; + DBusMessage *reply = NULL; + DBusMessageIter msg_iter; + DBusError error; + + pa_assert(conn); + pa_assert(msg); + pa_assert(u); + + dbus_error_init(&error); + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &xs, &x_npoints, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + + for(size_t i = 0; i < x_npoints; ++i) { + if (xs[i] >= FILTER_SIZE(u)) { + points_good=false; + break; + } + } + + if (x_npoints > FILTER_SIZE(u) || !points_good) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "xs indices/length must be <= %zd!", FILTER_SIZE(u)); + dbus_error_free(&error); + return; + } + + r_channel = channel == u->channels ? 0 : channel; + ys = pa_xmalloc(x_npoints * sizeof(double)); + a_i = pa_aupdate_read_begin(u->a_H[r_channel]); + H = u->Hs[r_channel][a_i]; + preamp = u->Xs[r_channel][a_i]; + for(uint32_t i = 0; i < x_npoints; ++i) { + ys[i] = H[xs[i]] * u->fft_size; + } + pa_aupdate_read_end(u->a_H[r_channel]); + + pa_assert_se((reply = dbus_message_new_method_return(msg))); + dbus_message_iter_init_append(reply, &msg_iter); + + pa_dbus_append_basic_array(&msg_iter, DBUS_TYPE_DOUBLE, ys, x_npoints); + pa_dbus_append_basic_variant(&msg_iter, DBUS_TYPE_DOUBLE, &preamp); + + pa_assert_se(dbus_connection_send(conn, reply, NULL)); + dbus_message_unref(reply); + pa_xfree(ys); +} + +static void get_filter(struct userdata *u, size_t channel, double **H_, double *preamp) { + float *H; + unsigned a_i; + size_t r_channel = channel == u->channels ? 0 : channel; + *H_ = pa_xnew0(double, FILTER_SIZE(u)); + a_i = pa_aupdate_read_begin(u->a_H[r_channel]); + H = u->Hs[r_channel][a_i]; + for(size_t i = 0;i < FILTER_SIZE(u); ++i) { + (*H_)[i] = H[i] * u->fft_size; + } + *preamp = u->Xs[r_channel][a_i]; + + pa_aupdate_read_end(u->a_H[r_channel]); +} + +void equalizer_handle_get_filter(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + unsigned n_coefs; + uint32_t channel; + double *H_, preamp; + DBusMessage *reply = NULL; + DBusMessageIter msg_iter; + DBusError error; + pa_assert_se(u = (struct userdata *) _u); + pa_assert(conn); + pa_assert(msg); + + dbus_error_init(&error); + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + + n_coefs = CHANNEL_PROFILE_SIZE(u); + pa_assert(conn); + pa_assert(msg); + get_filter(u, channel, &H_, &preamp); + pa_assert_se((reply = dbus_message_new_method_return(msg))); + dbus_message_iter_init_append(reply, &msg_iter); + + pa_dbus_append_basic_array(&msg_iter, DBUS_TYPE_DOUBLE, H_, n_coefs); + pa_dbus_append_basic_variant(&msg_iter, DBUS_TYPE_DOUBLE, &preamp); + + pa_assert_se(dbus_connection_send(conn, reply, NULL)); + dbus_message_unref(reply); + pa_xfree(H_); +} + +static void set_filter(struct userdata *u, size_t channel, double *H_, double preamp) { + unsigned a_i; + size_t r_channel = channel == u->channels ? 0 : channel; + float *H; + //all channels + a_i = pa_aupdate_write_begin(u->a_H[r_channel]); + u->Xs[r_channel][a_i] = (float) preamp; + H = u->Hs[r_channel][a_i]; + for(size_t i = 0; i < FILTER_SIZE(u); ++i) { + H[i] = (float) H_[i]; + } + fix_filter(H, u->fft_size); + if (channel == u->channels) { + for(size_t c = 1; c < u->channels; ++c) { + unsigned b_i = pa_aupdate_write_begin(u->a_H[c]); + u->Xs[c][b_i] = u->Xs[r_channel][a_i]; + memcpy(u->Hs[c][b_i], u->Hs[r_channel][a_i], FILTER_SIZE(u) * sizeof(float)); + pa_aupdate_write_end(u->a_H[c]); + } + } + pa_aupdate_write_end(u->a_H[r_channel]); +} + +void equalizer_handle_set_filter(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + double *H, preamp; + uint32_t channel; + unsigned _n_coefs; + DBusMessage *message = NULL; + DBusError error; + pa_assert_se(u = (struct userdata *) _u); + pa_assert(conn); + pa_assert(msg); + + dbus_error_init(&error); + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_ARRAY, DBUS_TYPE_DOUBLE, &H, &_n_coefs, + DBUS_TYPE_DOUBLE, &preamp, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + if (_n_coefs != FILTER_SIZE(u)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "This filter takes exactly %zd coefficients, you gave %d", FILTER_SIZE(u), _n_coefs); + return; + } + set_filter(u, channel, H, preamp); + + pa_dbus_send_empty_reply(conn, msg); + + pa_assert_se((message = dbus_message_new_signal(u->dbus_path, EQUALIZER_IFACE, equalizer_signals[EQUALIZER_SIGNAL_FILTER_CHANGED].name))); + pa_dbus_protocol_send_signal(u->dbus_protocol, message); + dbus_message_unref(message); +} + +void equalizer_handle_save_profile(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u = (struct userdata *) _u; + char *name; + uint32_t channel, r_channel; + DBusMessage *message = NULL; + DBusError error; + pa_assert(conn); + pa_assert(msg); + pa_assert(u); + dbus_error_init(&error); + + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + r_channel = channel == u->channels ? 0 : channel; + save_profile(u, r_channel, name); + pa_dbus_send_empty_reply(conn, msg); + + pa_assert_se((message = dbus_message_new_signal(MANAGER_PATH, MANAGER_IFACE, manager_signals[MANAGER_SIGNAL_PROFILES_CHANGED].name))); + pa_dbus_protocol_send_signal(u->dbus_protocol, message); + dbus_message_unref(message); +} + +void equalizer_handle_load_profile(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u = (struct userdata *) _u; + char *name; + DBusError error; + uint32_t channel, r_channel; + const char *err_msg = NULL; + DBusMessage *message = NULL; + + pa_assert(conn); + pa_assert(msg); + pa_assert(u); + dbus_error_init(&error); + + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + r_channel = channel == u->channels ? 0 : channel; + + err_msg = load_profile(u, r_channel, name); + if (err_msg != NULL) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_FAILED, "error loading profile %s: %s", name, err_msg); + dbus_error_free(&error); + return; + } + if (channel == u->channels) { + for(uint32_t c = 1; c < u->channels; ++c) { + load_profile(u, c, name); + } + } + pa_dbus_send_empty_reply(conn, msg); + + pa_assert_se((message = dbus_message_new_signal(u->dbus_path, EQUALIZER_IFACE, equalizer_signals[EQUALIZER_SIGNAL_FILTER_CHANGED].name))); + pa_dbus_protocol_send_signal(u->dbus_protocol, message); + dbus_message_unref(message); +} + +void equalizer_handle_save_state(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u = (struct userdata *) _u; + pa_assert(conn); + pa_assert(msg); + pa_assert(u); + + save_state(u); + pa_dbus_send_empty_reply(conn, msg); +} + +void equalizer_handle_get_profile_name(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u = (struct userdata *) _u; + DBusError error; + uint32_t channel, r_channel; + + pa_assert(conn); + pa_assert(msg); + pa_assert(u); + dbus_error_init(&error); + + if (!dbus_message_get_args(msg, &error, + DBUS_TYPE_UINT32, &channel, + DBUS_TYPE_INVALID)) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "%s", error.message); + dbus_error_free(&error); + return; + } + if (channel > u->channels) { + pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "invalid channel: %d", channel); + dbus_error_free(&error); + return; + } + r_channel = channel == u->channels ? 0 : channel; + pa_assert(u->base_profiles[r_channel]); + pa_dbus_send_basic_value_reply(conn,msg, DBUS_TYPE_STRING, &u->base_profiles[r_channel]); +} + +void equalizer_get_revision(DBusConnection *conn, DBusMessage *msg, void *_u) { + uint32_t rev=1; + pa_dbus_send_basic_value_reply(conn, msg, DBUS_TYPE_UINT32, &rev); +} + +void equalizer_get_n_channels(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + uint32_t channels; + pa_assert_se(u = (struct userdata *) _u); + pa_assert(conn); + pa_assert(msg); + + channels = (uint32_t) u->channels; + pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &channels); +} + +void equalizer_get_n_coefs(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + uint32_t n_coefs; + pa_assert_se(u = (struct userdata *) _u); + pa_assert(conn); + pa_assert(msg); + + n_coefs = (uint32_t) CHANNEL_PROFILE_SIZE(u); + pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &n_coefs); +} + +void equalizer_get_sample_rate(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + uint32_t rate; + pa_assert_se(u = (struct userdata *) _u); + pa_assert(conn); + pa_assert(msg); + + rate = (uint32_t) u->sink->sample_spec.rate; + pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &rate); +} + +void equalizer_get_filter_rate(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + uint32_t fft_size; + pa_assert_se(u = (struct userdata *) _u); + pa_assert(conn); + pa_assert(msg); + + fft_size = (uint32_t) u->fft_size; + pa_dbus_send_basic_variant_reply(conn, msg, DBUS_TYPE_UINT32, &fft_size); +} + +void equalizer_get_all(DBusConnection *conn, DBusMessage *msg, void *_u) { + struct userdata *u; + DBusMessage *reply = NULL; + DBusMessageIter msg_iter, dict_iter; + uint32_t rev, n_coefs, rate, fft_size, channels; + + pa_assert_se(u = _u); + pa_assert(msg); + + rev = 1; + n_coefs = (uint32_t) CHANNEL_PROFILE_SIZE(u); + rate = (uint32_t) u->sink->sample_spec.rate; + fft_size = (uint32_t) u->fft_size; + channels = (uint32_t) u->channels; + + pa_assert_se((reply = dbus_message_new_method_return(msg))); + dbus_message_iter_init_append(reply, &msg_iter); + pa_assert_se(dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "{sv}", &dict_iter)); + + pa_dbus_append_basic_variant_dict_entry(&dict_iter, equalizer_handlers[EQUALIZER_HANDLER_REVISION].property_name, DBUS_TYPE_UINT32, &rev); + pa_dbus_append_basic_variant_dict_entry(&dict_iter, equalizer_handlers[EQUALIZER_HANDLER_SAMPLERATE].property_name, DBUS_TYPE_UINT32, &rate); + pa_dbus_append_basic_variant_dict_entry(&dict_iter, equalizer_handlers[EQUALIZER_HANDLER_FILTERSAMPLERATE].property_name, DBUS_TYPE_UINT32, &fft_size); + pa_dbus_append_basic_variant_dict_entry(&dict_iter, equalizer_handlers[EQUALIZER_HANDLER_N_COEFS].property_name, DBUS_TYPE_UINT32, &n_coefs); + pa_dbus_append_basic_variant_dict_entry(&dict_iter, equalizer_handlers[EQUALIZER_HANDLER_N_CHANNELS].property_name, DBUS_TYPE_UINT32, &channels); + + pa_assert_se(dbus_message_iter_close_container(&msg_iter, &dict_iter)); + pa_assert_se(dbus_connection_send(conn, reply, NULL)); + dbus_message_unref(reply); +} |