[pulseaudio-discuss] [PATCH 1/3] resampler: Split the resampler implementations into separate files
Peter Meerwald
pmeerw at pmeerw.net
Mon Aug 4 05:40:12 PDT 2014
Signed-off-by: Peter Meerwald <pmeerw at pmeerw.net>
Signed-off-by: poljar (Damir Jelić) <poljarinho at gmail.com>
--
changes over https://github.com/poljar/pulseaudio/commits/resampler_implementations_v2:
rebased
---
src/Makefile.am | 18 +-
src/pulsecore/resampler.c | 634 ++------------------------------
src/pulsecore/resampler.h | 50 +++
src/pulsecore/resampler/ffmpeg.c | 132 +++++++
src/pulsecore/resampler/libsamplerate.c | 102 +++++
src/pulsecore/resampler/peaks.c | 163 ++++++++
src/pulsecore/resampler/speex.c | 151 ++++++++
src/pulsecore/resampler/trivial.c | 102 +++++
8 files changed, 748 insertions(+), 604 deletions(-)
create mode 100644 src/pulsecore/resampler/ffmpeg.c
create mode 100644 src/pulsecore/resampler/libsamplerate.c
create mode 100644 src/pulsecore/resampler/peaks.c
create mode 100644 src/pulsecore/resampler/speex.c
create mode 100644 src/pulsecore/resampler/trivial.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 5924bd8..21eb365 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -901,6 +901,8 @@ libpulsecore_ at PA_MAJORMINOR@_la_SOURCES = \
pulsecore/remap.c pulsecore/remap.h \
pulsecore/remap_mmx.c pulsecore/remap_sse.c \
pulsecore/resampler.c pulsecore/resampler.h \
+ pulsecore/resampler/ffmpeg.c pulsecore/resampler/peaks.c \
+ pulsecore/resampler/trivial.c \
pulsecore/rtpoll.c pulsecore/rtpoll.h \
pulsecore/stream-util.c pulsecore/stream-util.h \
pulsecore/mix.c pulsecore/mix.h \
@@ -925,9 +927,9 @@ libpulsecore_ at PA_MAJORMINOR@_la_SOURCES = \
pulsecore/thread-mq.c pulsecore/thread-mq.h \
pulsecore/database.h
-libpulsecore_ at PA_MAJORMINOR@_la_CFLAGS = $(AM_CFLAGS) $(SERVER_CFLAGS) $(LIBSAMPLERATE_CFLAGS) $(LIBSPEEX_CFLAGS) $(LIBSNDFILE_CFLAGS) $(WINSOCK_CFLAGS)
+libpulsecore_ at PA_MAJORMINOR@_la_CFLAGS = $(AM_CFLAGS) $(SERVER_CFLAGS) $(LIBSNDFILE_CFLAGS) $(WINSOCK_CFLAGS)
libpulsecore_ at PA_MAJORMINOR@_la_LDFLAGS = $(AM_LDFLAGS) -avoid-version
-libpulsecore_ at PA_MAJORMINOR@_la_LIBADD = $(AM_LIBADD) $(LIBLTDL) $(LIBSAMPLERATE_LIBS) $(LIBSPEEX_LIBS) $(LIBSNDFILE_LIBS) $(WINSOCK_LIBS) $(LTLIBICONV) libpulsecommon- at PA_MAJORMINOR@.la libpulse.la libpulsecore-foreign.la
+libpulsecore_ at PA_MAJORMINOR@_la_LIBADD = $(AM_LIBADD) $(LIBLTDL) $(LIBSNDFILE_LIBS) $(WINSOCK_LIBS) $(LTLIBICONV) libpulsecommon- at PA_MAJORMINOR@.la libpulse.la libpulsecore-foreign.la
if HAVE_NEON
noinst_LTLIBRARIES += libpulsecore_sconv_neon.la libpulsecore_mix_neon.la libpulsecore_remap_neon.la
@@ -978,6 +980,18 @@ if HAVE_SIMPLEDB
libpulsecore_ at PA_MAJORMINOR@_la_SOURCES += pulsecore/database-simple.c
endif
+if HAVE_SPEEX
+libpulsecore_ at PA_MAJORMINOR@_la_SOURCES += pulsecore/resampler/speex.c
+libpulsecore_ at PA_MAJORMINOR@_la_CFLAGS += $(LIBSPEEX_CFLAGS)
+libpulsecore_ at PA_MAJORMINOR@_la_LIBADD += $(LIBSPEEX_LIBS)
+endif
+
+if HAVE_LIBSAMPLERATE
+libpulsecore_ at PA_MAJORMINOR@_la_SOURCES += pulsecore/resampler/libsamplerate.c
+libpulsecore_ at PA_MAJORMINOR@_la_CFLAGS += $(LIBSAMPLERATE_CFLAGS)
+libpulsecore_ at PA_MAJORMINOR@_la_LIBADD += $(LIBSAMPLERATE_LIBS)
+endif
+
# We split the foreign code off to not be annoyed by warnings we don't care about
noinst_LTLIBRARIES += libpulsecore-foreign.la
diff --git a/src/pulsecore/resampler.c b/src/pulsecore/resampler.c
index 2842e65..de58f3f 100644
--- a/src/pulsecore/resampler.c
+++ b/src/pulsecore/resampler.c
@@ -25,106 +25,39 @@
#include <string.h>
-#ifdef HAVE_LIBSAMPLERATE
-#include <samplerate.h>
-#endif
-
#ifdef HAVE_SPEEX
#include <speex/speex_resampler.h>
+#include <math.h>
#endif
#include <pulse/xmalloc.h>
-#include <pulsecore/sconv.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/strbuf.h>
-#include <pulsecore/remap.h>
#include <pulsecore/once.h>
#include <pulsecore/core-util.h>
-#include "ffmpeg/avcodec.h"
#include "resampler.h"
/* Number of samples of extra space we allow the resamplers to return */
#define EXTRA_FRAMES 128
-struct pa_resampler {
- pa_resample_method_t method;
- pa_resample_flags_t flags;
-
- pa_sample_spec i_ss, o_ss;
- pa_channel_map i_cm, o_cm;
- size_t i_fz, o_fz, w_fz, w_sz;
- pa_mempool *mempool;
-
- pa_memchunk to_work_format_buf;
- pa_memchunk remap_buf;
- pa_memchunk resample_buf;
- pa_memchunk from_work_format_buf;
- size_t to_work_format_buf_size;
- size_t remap_buf_size;
- size_t resample_buf_size;
- size_t from_work_format_buf_size;
-
- /* points to buffer before resampling stage, remap or to_work */
- pa_memchunk *leftover_buf;
- size_t *leftover_buf_size;
-
- /* have_leftover points to leftover_in_remap or leftover_in_to_work */
- bool *have_leftover;
- bool leftover_in_remap;
- bool leftover_in_to_work;
-
- pa_sample_format_t work_format;
- uint8_t work_channels;
-
- pa_convert_func_t to_work_format_func;
- pa_convert_func_t from_work_format_func;
-
- pa_remap_t remap;
- bool map_required;
-
- pa_resampler_impl impl;
-};
-
-struct trivial_data { /* data specific to the trivial resampler */
- unsigned o_counter;
- unsigned i_counter;
-};
-
-struct peaks_data { /* data specific to the peak finder pseudo resampler */
- unsigned o_counter;
- unsigned i_counter;
-
- float max_f[PA_CHANNELS_MAX];
- int16_t max_i[PA_CHANNELS_MAX];
-};
-
struct ffmpeg_data { /* data specific to ffmpeg */
struct AVResampleContext *state;
};
static int copy_init(pa_resampler *r);
-static int trivial_init(pa_resampler*r);
-#ifdef HAVE_SPEEX
-static int speex_init(pa_resampler*r);
-#endif
-static int ffmpeg_init(pa_resampler*r);
-static int peaks_init(pa_resampler*r);
-#ifdef HAVE_LIBSAMPLERATE
-static int libsamplerate_init(pa_resampler*r);
-#endif
static void setup_remap(const pa_resampler *r, pa_remap_t *m);
static void free_remap(pa_remap_t *m);
-static int (* const init_table[])(pa_resampler*r) = {
+static int (* const init_table[])(pa_resampler *r) = {
#ifdef HAVE_LIBSAMPLERATE
- [PA_RESAMPLER_SRC_SINC_BEST_QUALITY] = libsamplerate_init,
- [PA_RESAMPLER_SRC_SINC_MEDIUM_QUALITY] = libsamplerate_init,
- [PA_RESAMPLER_SRC_SINC_FASTEST] = libsamplerate_init,
- [PA_RESAMPLER_SRC_ZERO_ORDER_HOLD] = libsamplerate_init,
- [PA_RESAMPLER_SRC_LINEAR] = libsamplerate_init,
+ [PA_RESAMPLER_SRC_SINC_BEST_QUALITY] = pa_resampler_libsamplerate_init,
+ [PA_RESAMPLER_SRC_SINC_MEDIUM_QUALITY] = pa_resampler_libsamplerate_init,
+ [PA_RESAMPLER_SRC_SINC_FASTEST] = pa_resampler_libsamplerate_init,
+ [PA_RESAMPLER_SRC_ZERO_ORDER_HOLD] = pa_resampler_libsamplerate_init,
+ [PA_RESAMPLER_SRC_LINEAR] = pa_resampler_libsamplerate_init,
#else
[PA_RESAMPLER_SRC_SINC_BEST_QUALITY] = NULL,
[PA_RESAMPLER_SRC_SINC_MEDIUM_QUALITY] = NULL,
@@ -132,30 +65,30 @@ static int (* const init_table[])(pa_resampler*r) = {
[PA_RESAMPLER_SRC_ZERO_ORDER_HOLD] = NULL,
[PA_RESAMPLER_SRC_LINEAR] = NULL,
#endif
- [PA_RESAMPLER_TRIVIAL] = trivial_init,
+ [PA_RESAMPLER_TRIVIAL] = pa_resampler_trivial_init,
#ifdef HAVE_SPEEX
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+0] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+1] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+2] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+3] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+4] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+5] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+6] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+7] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+8] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+9] = speex_init,
- [PA_RESAMPLER_SPEEX_FLOAT_BASE+10] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+0] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+1] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+2] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+3] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+4] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+5] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+6] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+7] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+8] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+9] = speex_init,
- [PA_RESAMPLER_SPEEX_FIXED_BASE+10] = speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+0] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+1] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+2] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+3] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+4] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+5] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+6] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+7] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+8] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+9] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FLOAT_BASE+10] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+0] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+1] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+2] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+3] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+4] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+5] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+6] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+7] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+8] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+9] = pa_resampler_speex_init,
+ [PA_RESAMPLER_SPEEX_FIXED_BASE+10] = pa_resampler_speex_init,
#else
[PA_RESAMPLER_SPEEX_FLOAT_BASE+0] = NULL,
[PA_RESAMPLER_SPEEX_FLOAT_BASE+1] = NULL,
@@ -180,10 +113,10 @@ static int (* const init_table[])(pa_resampler*r) = {
[PA_RESAMPLER_SPEEX_FIXED_BASE+9] = NULL,
[PA_RESAMPLER_SPEEX_FIXED_BASE+10] = NULL,
#endif
- [PA_RESAMPLER_FFMPEG] = ffmpeg_init,
+ [PA_RESAMPLER_FFMPEG] = pa_resampler_ffmpeg_init,
[PA_RESAMPLER_AUTO] = NULL,
[PA_RESAMPLER_COPY] = copy_init,
- [PA_RESAMPLER_PEAKS] = peaks_init,
+ [PA_RESAMPLER_PEAKS] = pa_resampler_peaks_init,
};
static bool speex_is_fixed_point(void);
@@ -1408,84 +1341,6 @@ void pa_resampler_run(pa_resampler *r, const pa_memchunk *in, pa_memchunk *out)
pa_memchunk_reset(out);
}
-/*** libsamplerate based implementation ***/
-
-#ifdef HAVE_LIBSAMPLERATE
-static unsigned libsamplerate_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
- SRC_DATA data;
- SRC_STATE *state;
-
- pa_assert(r);
- pa_assert(input);
- pa_assert(output);
- pa_assert(out_n_frames);
-
- state = r->impl.data;
- memset(&data, 0, sizeof(data));
-
- data.data_in = pa_memblock_acquire_chunk(input);
- data.input_frames = (long int) in_n_frames;
-
- data.data_out = pa_memblock_acquire_chunk(output);
- data.output_frames = (long int) *out_n_frames;
-
- data.src_ratio = (double) r->o_ss.rate / r->i_ss.rate;
- data.end_of_input = 0;
-
- pa_assert_se(src_process(state, &data) == 0);
-
- pa_memblock_release(input->memblock);
- pa_memblock_release(output->memblock);
-
- *out_n_frames = (unsigned) data.output_frames_gen;
-
- return in_n_frames - data.input_frames_used;
-}
-
-static void libsamplerate_update_rates(pa_resampler *r) {
- SRC_STATE *state;
- pa_assert(r);
-
- state = r->impl.data;
- pa_assert_se(src_set_ratio(state, (double) r->o_ss.rate / r->i_ss.rate) == 0);
-}
-
-static void libsamplerate_reset(pa_resampler *r) {
- SRC_STATE *state;
- pa_assert(r);
-
- state = r->impl.data;
- pa_assert_se(src_reset(state) == 0);
-}
-
-static void libsamplerate_free(pa_resampler *r) {
- SRC_STATE *state;
- pa_assert(r);
-
- state = r->impl.data;
- if (state)
- src_delete(state);
-}
-
-static int libsamplerate_init(pa_resampler *r) {
- int err;
- SRC_STATE *state;
-
- pa_assert(r);
-
- if (!(state = src_new(r->method, r->work_channels, &err)))
- return -1;
-
- r->impl.free = libsamplerate_free;
- r->impl.update_rates = libsamplerate_update_rates;
- r->impl.resample = libsamplerate_resample;
- r->impl.reset = libsamplerate_reset;
- r->impl.data = state;
-
- return 0;
-}
-#endif
-
/*** speex based implementation ***/
static bool speex_is_fixed_point(void) {
@@ -1516,431 +1371,6 @@ static bool speex_is_fixed_point(void) {
return result;
}
-#ifdef HAVE_SPEEX
-static unsigned speex_resample_float(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
- float *in, *out;
- uint32_t inf = in_n_frames, outf = *out_n_frames;
- SpeexResamplerState *state;
-
- pa_assert(r);
- pa_assert(input);
- pa_assert(output);
- pa_assert(out_n_frames);
-
- state = r->impl.data;
-
- in = pa_memblock_acquire_chunk(input);
- out = pa_memblock_acquire_chunk(output);
-
- /* Strictly speaking, speex resampler expects its input
- * to be normalized to the [-32768.0 .. 32767.0] range.
- * This matters if speex has been compiled with --enable-fixed-point,
- * because such speex will round the samples to the nearest
- * integer. speex with --enable-fixed-point is therefore incompatible
- * with PulseAudio's floating-point sample range [-1 .. 1]. speex
- * without --enable-fixed-point works fine with this range.
- * Care has been taken to call speex_resample_float() only
- * for speex compiled without --enable-fixed-point.
- */
- pa_assert_se(speex_resampler_process_interleaved_float(state, in, &inf, out, &outf) == 0);
-
- pa_memblock_release(input->memblock);
- pa_memblock_release(output->memblock);
-
- pa_assert(inf == in_n_frames);
- *out_n_frames = outf;
-
- return 0;
-}
-
-static unsigned speex_resample_int(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
- int16_t *in, *out;
- uint32_t inf = in_n_frames, outf = *out_n_frames;
- SpeexResamplerState *state;
-
- pa_assert(r);
- pa_assert(input);
- pa_assert(output);
- pa_assert(out_n_frames);
-
- state = r->impl.data;
-
- in = pa_memblock_acquire_chunk(input);
- out = pa_memblock_acquire_chunk(output);
-
- pa_assert_se(speex_resampler_process_interleaved_int(state, in, &inf, out, &outf) == 0);
-
- pa_memblock_release(input->memblock);
- pa_memblock_release(output->memblock);
-
- pa_assert(inf == in_n_frames);
- *out_n_frames = outf;
-
- return 0;
-}
-
-static void speex_update_rates(pa_resampler *r) {
- SpeexResamplerState *state;
- pa_assert(r);
-
- state = r->impl.data;
-
- pa_assert_se(speex_resampler_set_rate(state, r->i_ss.rate, r->o_ss.rate) == 0);
-}
-
-static void speex_reset(pa_resampler *r) {
- SpeexResamplerState *state;
- pa_assert(r);
-
- state = r->impl.data;
-
- pa_assert_se(speex_resampler_reset_mem(state) == 0);
-}
-
-static void speex_free(pa_resampler *r) {
- SpeexResamplerState *state;
- pa_assert(r);
-
- state = r->impl.data;
- if (!state)
- return;
-
- speex_resampler_destroy(state);
-}
-
-static int speex_init(pa_resampler *r) {
- int q, err;
- SpeexResamplerState *state;
-
- pa_assert(r);
-
- r->impl.free = speex_free;
- r->impl.update_rates = speex_update_rates;
- r->impl.reset = speex_reset;
-
- if (r->method >= PA_RESAMPLER_SPEEX_FIXED_BASE && r->method <= PA_RESAMPLER_SPEEX_FIXED_MAX) {
-
- q = r->method - PA_RESAMPLER_SPEEX_FIXED_BASE;
- r->impl.resample = speex_resample_int;
-
- } else {
- pa_assert(r->method >= PA_RESAMPLER_SPEEX_FLOAT_BASE && r->method <= PA_RESAMPLER_SPEEX_FLOAT_MAX);
-
- q = r->method - PA_RESAMPLER_SPEEX_FLOAT_BASE;
- r->impl.resample = speex_resample_float;
- }
-
- pa_log_info("Choosing speex quality setting %i.", q);
-
- if (!(state = speex_resampler_init(r->work_channels, r->i_ss.rate, r->o_ss.rate, q, &err)))
- return -1;
-
- r->impl.data = state;
-
- return 0;
-}
-#endif
-
-/* Trivial implementation */
-
-static unsigned trivial_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
- unsigned i_index, o_index;
- void *src, *dst;
- struct trivial_data *trivial_data;
-
- pa_assert(r);
- pa_assert(input);
- pa_assert(output);
- pa_assert(out_n_frames);
-
- trivial_data = r->impl.data;
-
- src = pa_memblock_acquire_chunk(input);
- dst = pa_memblock_acquire_chunk(output);
-
- for (o_index = 0;; o_index++, trivial_data->o_counter++) {
- i_index = ((uint64_t) trivial_data->o_counter * r->i_ss.rate) / r->o_ss.rate;
- i_index = i_index > trivial_data->i_counter ? i_index - trivial_data->i_counter : 0;
-
- if (i_index >= in_n_frames)
- break;
-
- pa_assert_fp(o_index * r->w_fz < pa_memblock_get_length(output->memblock));
-
- memcpy((uint8_t*) dst + r->w_fz * o_index, (uint8_t*) src + r->w_fz * i_index, (int) r->w_fz);
- }
-
- pa_memblock_release(input->memblock);
- pa_memblock_release(output->memblock);
-
- *out_n_frames = o_index;
-
- trivial_data->i_counter += in_n_frames;
-
- /* Normalize counters */
- while (trivial_data->i_counter >= r->i_ss.rate) {
- pa_assert(trivial_data->o_counter >= r->o_ss.rate);
-
- trivial_data->i_counter -= r->i_ss.rate;
- trivial_data->o_counter -= r->o_ss.rate;
- }
-
- return 0;
-}
-
-static void trivial_update_rates_or_reset(pa_resampler *r) {
- struct trivial_data *trivial_data;
- pa_assert(r);
-
- trivial_data = r->impl.data;
-
- trivial_data->i_counter = 0;
- trivial_data->o_counter = 0;
-}
-
-static int trivial_init(pa_resampler*r) {
- struct trivial_data *trivial_data;
- pa_assert(r);
-
- trivial_data = pa_xnew0(struct trivial_data, 1);
-
- r->impl.resample = trivial_resample;
- r->impl.update_rates = trivial_update_rates_or_reset;
- r->impl.reset = trivial_update_rates_or_reset;
- r->impl.data = trivial_data;
-
- return 0;
-}
-
-/* Peak finder implementation */
-
-static unsigned peaks_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
- unsigned c, o_index = 0;
- unsigned i, i_end = 0;
- void *src, *dst;
- struct peaks_data *peaks_data;
-
- pa_assert(r);
- pa_assert(input);
- pa_assert(output);
- pa_assert(out_n_frames);
-
- peaks_data = r->impl.data;
- src = pa_memblock_acquire_chunk(input);
- dst = pa_memblock_acquire_chunk(output);
-
- i = ((uint64_t) peaks_data->o_counter * r->i_ss.rate) / r->o_ss.rate;
- i = i > peaks_data->i_counter ? i - peaks_data->i_counter : 0;
-
- while (i_end < in_n_frames) {
- i_end = ((uint64_t) (peaks_data->o_counter + 1) * r->i_ss.rate) / r->o_ss.rate;
- i_end = i_end > peaks_data->i_counter ? i_end - peaks_data->i_counter : 0;
-
- pa_assert_fp(o_index * r->w_fz < pa_memblock_get_length(output->memblock));
-
- /* 1ch float is treated separately, because that is the common case */
- if (r->work_channels == 1 && r->work_format == PA_SAMPLE_FLOAT32NE) {
- float *s = (float*) src + i;
- float *d = (float*) dst + o_index;
-
- for (; i < i_end && i < in_n_frames; i++) {
- float n = fabsf(*s++);
-
- if (n > peaks_data->max_f[0])
- peaks_data->max_f[0] = n;
- }
-
- if (i == i_end) {
- *d = peaks_data->max_f[0];
- peaks_data->max_f[0] = 0;
- o_index++, peaks_data->o_counter++;
- }
- } else if (r->work_format == PA_SAMPLE_S16NE) {
- int16_t *s = (int16_t*) src + r->work_channels * i;
- int16_t *d = (int16_t*) dst + r->work_channels * o_index;
-
- for (; i < i_end && i < in_n_frames; i++)
- for (c = 0; c < r->work_channels; c++) {
- int16_t n = abs(*s++);
-
- if (n > peaks_data->max_i[c])
- peaks_data->max_i[c] = n;
- }
-
- if (i == i_end) {
- for (c = 0; c < r->work_channels; c++, d++) {
- *d = peaks_data->max_i[c];
- peaks_data->max_i[c] = 0;
- }
- o_index++, peaks_data->o_counter++;
- }
- } else {
- float *s = (float*) src + r->work_channels * i;
- float *d = (float*) dst + r->work_channels * o_index;
-
- for (; i < i_end && i < in_n_frames; i++)
- for (c = 0; c < r->work_channels; c++) {
- float n = fabsf(*s++);
-
- if (n > peaks_data->max_f[c])
- peaks_data->max_f[c] = n;
- }
-
- if (i == i_end) {
- for (c = 0; c < r->work_channels; c++, d++) {
- *d = peaks_data->max_f[c];
- peaks_data->max_f[c] = 0;
- }
- o_index++, peaks_data->o_counter++;
- }
- }
- }
-
- pa_memblock_release(input->memblock);
- pa_memblock_release(output->memblock);
-
- *out_n_frames = o_index;
-
- peaks_data->i_counter += in_n_frames;
-
- /* Normalize counters */
- while (peaks_data->i_counter >= r->i_ss.rate) {
- pa_assert(peaks_data->o_counter >= r->o_ss.rate);
-
- peaks_data->i_counter -= r->i_ss.rate;
- peaks_data->o_counter -= r->o_ss.rate;
- }
-
- return 0;
-}
-
-static void peaks_update_rates_or_reset(pa_resampler *r) {
- struct peaks_data *peaks_data;
- pa_assert(r);
-
- peaks_data = r->impl.data;
-
- peaks_data->i_counter = 0;
- peaks_data->o_counter = 0;
-}
-
-static int peaks_init(pa_resampler*r) {
- struct peaks_data *peaks_data;
- pa_assert(r);
- pa_assert(r->i_ss.rate >= r->o_ss.rate);
- pa_assert(r->work_format == PA_SAMPLE_S16NE || r->work_format == PA_SAMPLE_FLOAT32NE);
-
- peaks_data = pa_xnew0(struct peaks_data, 1);
-
- r->impl.resample = peaks_resample;
- r->impl.update_rates = peaks_update_rates_or_reset;
- r->impl.reset = peaks_update_rates_or_reset;
- r->impl.data = peaks_data;
-
- return 0;
-}
-
-/*** ffmpeg based implementation ***/
-
-static unsigned ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
- unsigned used_frames = 0, c;
- int previous_consumed_frames = -1;
- struct ffmpeg_data *ffmpeg_data;
-
- pa_assert(r);
- pa_assert(input);
- pa_assert(output);
- pa_assert(out_n_frames);
-
- ffmpeg_data = r->impl.data;
-
- for (c = 0; c < r->work_channels; c++) {
- unsigned u;
- pa_memblock *b, *w;
- int16_t *p, *t, *k, *q, *s;
- int consumed_frames;
-
- /* Allocate a new block */
- b = pa_memblock_new(r->mempool, in_n_frames * sizeof(int16_t));
- p = pa_memblock_acquire(b);
-
- /* Now copy the input data, splitting up channels */
- t = (int16_t*) pa_memblock_acquire_chunk(input) + c;
- k = p;
- for (u = 0; u < in_n_frames; u++) {
- *k = *t;
- t += r->work_channels;
- k ++;
- }
- pa_memblock_release(input->memblock);
-
- /* Allocate buffer for the result */
- w = pa_memblock_new(r->mempool, *out_n_frames * sizeof(int16_t));
- q = pa_memblock_acquire(w);
-
- /* Now, resample */
- used_frames = (unsigned) av_resample(ffmpeg_data->state,
- q, p,
- &consumed_frames,
- (int) in_n_frames, (int) *out_n_frames,
- c >= (unsigned) (r->work_channels-1));
-
- pa_memblock_release(b);
- pa_memblock_unref(b);
-
- pa_assert(consumed_frames <= (int) in_n_frames);
- pa_assert(previous_consumed_frames == -1 || consumed_frames == previous_consumed_frames);
- previous_consumed_frames = consumed_frames;
-
- /* And place the results in the output buffer */
- s = (int16_t *) pa_memblock_acquire_chunk(output) + c;
- for (u = 0; u < used_frames; u++) {
- *s = *q;
- q++;
- s += r->work_channels;
- }
- pa_memblock_release(output->memblock);
- pa_memblock_release(w);
- pa_memblock_unref(w);
- }
-
- *out_n_frames = used_frames;
-
- return in_n_frames - previous_consumed_frames;
-}
-
-static void ffmpeg_free(pa_resampler *r) {
- struct ffmpeg_data *ffmpeg_data;
-
- pa_assert(r);
-
- ffmpeg_data = r->impl.data;
- if (ffmpeg_data->state)
- av_resample_close(ffmpeg_data->state);
-}
-
-static int ffmpeg_init(pa_resampler *r) {
- struct ffmpeg_data *ffmpeg_data;
-
- pa_assert(r);
-
- ffmpeg_data = pa_xnew(struct ffmpeg_data, 1);
-
- /* We could probably implement different quality levels by
- * adjusting the filter parameters here. However, ffmpeg
- * internally only uses these hardcoded values, so let's use them
- * here for now as well until ffmpeg makes this configurable. */
-
- if (!(ffmpeg_data->state = av_resample_init((int) r->o_ss.rate, (int) r->i_ss.rate, 16, 10, 0, 0.8)))
- return -1;
-
- r->impl.free = ffmpeg_free;
- r->impl.resample = ffmpeg_resample;
- r->impl.data = (void *) ffmpeg_data;
-
- return 0;
-}
-
/*** copy (noop) implementation ***/
static int copy_init(pa_resampler *r) {
diff --git a/src/pulsecore/resampler.h b/src/pulsecore/resampler.h
index 058a800..13d8c35 100644
--- a/src/pulsecore/resampler.h
+++ b/src/pulsecore/resampler.h
@@ -26,10 +26,14 @@
#include <pulse/channelmap.h>
#include <pulsecore/memblock.h>
#include <pulsecore/memchunk.h>
+#include <pulsecore/sconv.h>
+#include <pulsecore/remap.h>
typedef struct pa_resampler pa_resampler;
typedef struct pa_resampler_impl pa_resampler_impl;
+typedef struct pa_resampler pa_resampler;
+
struct pa_resampler_impl {
void (*free)(pa_resampler *r);
void (*update_rates)(pa_resampler *r);
@@ -67,6 +71,45 @@ typedef enum pa_resample_flags {
PA_RESAMPLER_NO_LFE = 0x0008U
} pa_resample_flags_t;
+struct pa_resampler {
+ pa_resample_method_t method;
+ pa_resample_flags_t flags;
+
+ pa_sample_spec i_ss, o_ss;
+ pa_channel_map i_cm, o_cm;
+ size_t i_fz, o_fz, w_fz, w_sz;
+ pa_mempool *mempool;
+
+ pa_memchunk to_work_format_buf;
+ pa_memchunk remap_buf;
+ pa_memchunk resample_buf;
+ pa_memchunk from_work_format_buf;
+ size_t to_work_format_buf_size;
+ size_t remap_buf_size;
+ size_t resample_buf_size;
+ size_t from_work_format_buf_size;
+
+ /* points to buffer before resampling stage, remap or to_work */
+ pa_memchunk *leftover_buf;
+ size_t *leftover_buf_size;
+
+ /* have_leftover points to leftover_in_remap or leftover_in_to_work */
+ bool *have_leftover;
+ bool leftover_in_remap;
+ bool leftover_in_to_work;
+
+ pa_sample_format_t work_format;
+ uint8_t work_channels;
+
+ pa_convert_func_t to_work_format_func;
+ pa_convert_func_t from_work_format_func;
+
+ pa_remap_t remap;
+ bool map_required;
+
+ pa_resampler_impl impl;
+};
+
pa_resampler* pa_resampler_new(
pa_mempool *pool,
const pa_sample_spec *a,
@@ -116,4 +159,11 @@ const pa_sample_spec* pa_resampler_input_sample_spec(pa_resampler *r);
const pa_channel_map* pa_resampler_output_channel_map(pa_resampler *r);
const pa_sample_spec* pa_resampler_output_sample_spec(pa_resampler *r);
+/* Implementation specific init functions */
+int pa_resampler_ffmpeg_init(pa_resampler *r);
+int pa_resampler_libsamplerate_init(pa_resampler *r);
+int pa_resampler_peaks_init(pa_resampler *r);
+int pa_resampler_speex_init(pa_resampler *r);
+int pa_resampler_trivial_init(pa_resampler*r);
+
#endif
diff --git a/src/pulsecore/resampler/ffmpeg.c b/src/pulsecore/resampler/ffmpeg.c
new file mode 100644
index 0000000..9e35236
--- /dev/null
+++ b/src/pulsecore/resampler/ffmpeg.c
@@ -0,0 +1,132 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+#include "pulsecore/ffmpeg/avcodec.h"
+
+#include "pulsecore/resampler.h"
+
+struct ffmpeg_data { /* data specific to ffmpeg */
+ struct AVResampleContext *state;
+};
+
+static unsigned ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
+ unsigned used_frames = 0, c;
+ int previous_consumed_frames = -1;
+ struct ffmpeg_data *ffmpeg_data;
+
+ pa_assert(r);
+ pa_assert(input);
+ pa_assert(output);
+ pa_assert(out_n_frames);
+
+ ffmpeg_data = r->impl.data;
+
+ for (c = 0; c < r->work_channels; c++) {
+ unsigned u;
+ pa_memblock *b, *w;
+ int16_t *p, *t, *k, *q, *s;
+ int consumed_frames;
+
+ /* Allocate a new block */
+ b = pa_memblock_new(r->mempool, in_n_frames * sizeof(int16_t));
+ p = pa_memblock_acquire(b);
+
+ /* Now copy the input data, splitting up channels */
+ t = (int16_t*) pa_memblock_acquire_chunk(input) + c;
+ k = p;
+ for (u = 0; u < in_n_frames; u++) {
+ *k = *t;
+ t += r->work_channels;
+ k ++;
+ }
+ pa_memblock_release(input->memblock);
+
+ /* Allocate buffer for the result */
+ w = pa_memblock_new(r->mempool, *out_n_frames * sizeof(int16_t));
+ q = pa_memblock_acquire(w);
+
+ /* Now, resample */
+ used_frames = (unsigned) av_resample(ffmpeg_data->state,
+ q, p,
+ &consumed_frames,
+ (int) in_n_frames, (int) *out_n_frames,
+ c >= (unsigned) (r->work_channels-1));
+
+ pa_memblock_release(b);
+ pa_memblock_unref(b);
+
+ pa_assert(consumed_frames <= (int) in_n_frames);
+ pa_assert(previous_consumed_frames == -1 || consumed_frames == previous_consumed_frames);
+ previous_consumed_frames = consumed_frames;
+
+ /* And place the results in the output buffer */
+ s = (int16_t *) pa_memblock_acquire_chunk(output) + c;
+ for (u = 0; u < used_frames; u++) {
+ *s = *q;
+ q++;
+ s += r->work_channels;
+ }
+ pa_memblock_release(output->memblock);
+ pa_memblock_release(w);
+ pa_memblock_unref(w);
+ }
+
+ *out_n_frames = used_frames;
+
+ return in_n_frames - previous_consumed_frames;
+}
+
+static void ffmpeg_free(pa_resampler *r) {
+ struct ffmpeg_data *ffmpeg_data;
+
+ pa_assert(r);
+
+ ffmpeg_data = r->impl.data;
+ if (ffmpeg_data->state)
+ av_resample_close(ffmpeg_data->state);
+}
+
+int pa_resampler_ffmpeg_init(pa_resampler *r) {
+ struct ffmpeg_data *ffmpeg_data;
+
+ pa_assert(r);
+
+ ffmpeg_data = pa_xnew(struct ffmpeg_data, 1);
+
+ /* We could probably implement different quality levels by
+ * adjusting the filter parameters here. However, ffmpeg
+ * internally only uses these hardcoded values, so let's use them
+ * here for now as well until ffmpeg makes this configurable. */
+
+ if (!(ffmpeg_data->state = av_resample_init((int) r->o_ss.rate, (int) r->i_ss.rate, 16, 10, 0, 0.8)))
+ return -1;
+
+ r->impl.free = ffmpeg_free;
+ r->impl.resample = ffmpeg_resample;
+ r->impl.data = (void *) ffmpeg_data;
+
+ return 0;
+}
diff --git a/src/pulsecore/resampler/libsamplerate.c b/src/pulsecore/resampler/libsamplerate.c
new file mode 100644
index 0000000..48ea594
--- /dev/null
+++ b/src/pulsecore/resampler/libsamplerate.c
@@ -0,0 +1,102 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <samplerate.h>
+
+#include "pulsecore/resampler.h"
+
+static unsigned libsamplerate_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
+ SRC_DATA data;
+ SRC_STATE *state;
+
+ pa_assert(r);
+ pa_assert(input);
+ pa_assert(output);
+ pa_assert(out_n_frames);
+
+ state = r->impl.data;
+ memset(&data, 0, sizeof(data));
+
+ data.data_in = pa_memblock_acquire_chunk(input);
+ data.input_frames = (long int) in_n_frames;
+
+ data.data_out = pa_memblock_acquire_chunk(output);
+ data.output_frames = (long int) *out_n_frames;
+
+ data.src_ratio = (double) r->o_ss.rate / r->i_ss.rate;
+ data.end_of_input = 0;
+
+ pa_assert_se(src_process(state, &data) == 0);
+
+ pa_memblock_release(input->memblock);
+ pa_memblock_release(output->memblock);
+
+ *out_n_frames = (unsigned) data.output_frames_gen;
+
+ return in_n_frames - data.input_frames_used;
+}
+
+static void libsamplerate_update_rates(pa_resampler *r) {
+ SRC_STATE *state;
+ pa_assert(r);
+
+ state = r->impl.data;
+ pa_assert_se(src_set_ratio(state, (double) r->o_ss.rate / r->i_ss.rate) == 0);
+}
+
+static void libsamplerate_reset(pa_resampler *r) {
+ SRC_STATE *state;
+ pa_assert(r);
+
+ state = r->impl.data;
+ pa_assert_se(src_reset(state) == 0);
+}
+
+static void libsamplerate_free(pa_resampler *r) {
+ SRC_STATE *state;
+ pa_assert(r);
+
+ state = r->impl.data;
+ if (state)
+ src_delete(state);
+}
+
+int pa_resampler_libsamplerate_init(pa_resampler *r) {
+ int err;
+ SRC_STATE *state;
+
+ pa_assert(r);
+
+ if (!(state = src_new(r->method, r->work_channels, &err)))
+ return -1;
+
+ r->impl.free = libsamplerate_free;
+ r->impl.update_rates = libsamplerate_update_rates;
+ r->impl.resample = libsamplerate_resample;
+ r->impl.reset = libsamplerate_reset;
+ r->impl.data = state;
+
+ return 0;
+}
diff --git a/src/pulsecore/resampler/peaks.c b/src/pulsecore/resampler/peaks.c
new file mode 100644
index 0000000..ef9e99e
--- /dev/null
+++ b/src/pulsecore/resampler/peaks.c
@@ -0,0 +1,163 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+#include <math.h>
+
+#include "pulsecore/resampler.h"
+
+struct peaks_data { /* data specific to the peak finder pseudo resampler */
+ unsigned o_counter;
+ unsigned i_counter;
+
+ float max_f[PA_CHANNELS_MAX];
+ int16_t max_i[PA_CHANNELS_MAX];
+};
+
+static unsigned peaks_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
+ unsigned c, o_index = 0;
+ unsigned i, i_end = 0;
+ void *src, *dst;
+ struct peaks_data *peaks_data;
+
+ pa_assert(r);
+ pa_assert(input);
+ pa_assert(output);
+ pa_assert(out_n_frames);
+
+ peaks_data = r->impl.data;
+ src = pa_memblock_acquire_chunk(input);
+ dst = pa_memblock_acquire_chunk(output);
+
+ i = ((uint64_t) peaks_data->o_counter * r->i_ss.rate) / r->o_ss.rate;
+ i = i > peaks_data->i_counter ? i - peaks_data->i_counter : 0;
+
+ while (i_end < in_n_frames) {
+ i_end = ((uint64_t) (peaks_data->o_counter + 1) * r->i_ss.rate) / r->o_ss.rate;
+ i_end = i_end > peaks_data->i_counter ? i_end - peaks_data->i_counter : 0;
+
+ pa_assert_fp(o_index * r->w_fz < pa_memblock_get_length(output->memblock));
+
+ /* 1ch float is treated separately, because that is the common case */
+ if (r->work_channels == 1 && r->work_format == PA_SAMPLE_FLOAT32NE) {
+ float *s = (float*) src + i;
+ float *d = (float*) dst + o_index;
+
+ for (; i < i_end && i < in_n_frames; i++) {
+ float n = fabsf(*s++);
+
+ if (n > peaks_data->max_f[0])
+ peaks_data->max_f[0] = n;
+ }
+
+ if (i == i_end) {
+ *d = peaks_data->max_f[0];
+ peaks_data->max_f[0] = 0;
+ o_index++, peaks_data->o_counter++;
+ }
+ } else if (r->work_format == PA_SAMPLE_S16NE) {
+ int16_t *s = (int16_t*) src + r->work_channels * i;
+ int16_t *d = (int16_t*) dst + r->work_channels * o_index;
+
+ for (; i < i_end && i < in_n_frames; i++)
+ for (c = 0; c < r->work_channels; c++) {
+ int16_t n = abs(*s++);
+
+ if (n > peaks_data->max_i[c])
+ peaks_data->max_i[c] = n;
+ }
+
+ if (i == i_end) {
+ for (c = 0; c < r->work_channels; c++, d++) {
+ *d = peaks_data->max_i[c];
+ peaks_data->max_i[c] = 0;
+ }
+ o_index++, peaks_data->o_counter++;
+ }
+ } else {
+ float *s = (float*) src + r->work_channels * i;
+ float *d = (float*) dst + r->work_channels * o_index;
+
+ for (; i < i_end && i < in_n_frames; i++)
+ for (c = 0; c < r->work_channels; c++) {
+ float n = fabsf(*s++);
+
+ if (n > peaks_data->max_f[c])
+ peaks_data->max_f[c] = n;
+ }
+
+ if (i == i_end) {
+ for (c = 0; c < r->work_channels; c++, d++) {
+ *d = peaks_data->max_f[c];
+ peaks_data->max_f[c] = 0;
+ }
+ o_index++, peaks_data->o_counter++;
+ }
+ }
+ }
+
+ pa_memblock_release(input->memblock);
+ pa_memblock_release(output->memblock);
+
+ *out_n_frames = o_index;
+
+ peaks_data->i_counter += in_n_frames;
+
+ /* Normalize counters */
+ while (peaks_data->i_counter >= r->i_ss.rate) {
+ pa_assert(peaks_data->o_counter >= r->o_ss.rate);
+
+ peaks_data->i_counter -= r->i_ss.rate;
+ peaks_data->o_counter -= r->o_ss.rate;
+ }
+
+ return 0;
+}
+
+static void peaks_update_rates_or_reset(pa_resampler *r) {
+ struct peaks_data *peaks_data;
+ pa_assert(r);
+
+ peaks_data = r->impl.data;
+
+ peaks_data->i_counter = 0;
+ peaks_data->o_counter = 0;
+}
+
+int pa_resampler_peaks_init(pa_resampler*r) {
+ struct peaks_data *peaks_data;
+ pa_assert(r);
+ pa_assert(r->i_ss.rate >= r->o_ss.rate);
+ pa_assert(r->work_format == PA_SAMPLE_S16NE || r->work_format == PA_SAMPLE_FLOAT32NE);
+
+ peaks_data = pa_xnew0(struct peaks_data, 1);
+
+ r->impl.resample = peaks_resample;
+ r->impl.update_rates = peaks_update_rates_or_reset;
+ r->impl.reset = peaks_update_rates_or_reset;
+ r->impl.data = peaks_data;
+
+ return 0;
+}
diff --git a/src/pulsecore/resampler/speex.c b/src/pulsecore/resampler/speex.c
new file mode 100644
index 0000000..faeef76
--- /dev/null
+++ b/src/pulsecore/resampler/speex.c
@@ -0,0 +1,151 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <speex/speex_resampler.h>
+
+#include "pulsecore/resampler.h"
+
+static unsigned speex_resample_float(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
+ float *in, *out;
+ uint32_t inf = in_n_frames, outf = *out_n_frames;
+ SpeexResamplerState *state;
+
+ pa_assert(r);
+ pa_assert(input);
+ pa_assert(output);
+ pa_assert(out_n_frames);
+
+ state = r->impl.data;
+
+ in = pa_memblock_acquire_chunk(input);
+ out = pa_memblock_acquire_chunk(output);
+
+ /* Strictly speaking, speex resampler expects its input
+ * to be normalized to the [-32768.0 .. 32767.0] range.
+ * This matters if speex has been compiled with --enable-fixed-point,
+ * because such speex will round the samples to the nearest
+ * integer. speex with --enable-fixed-point is therefore incompatible
+ * with PulseAudio's floating-point sample range [-1 .. 1]. speex
+ * without --enable-fixed-point works fine with this range.
+ * Care has been taken to call speex_resample_float() only
+ * for speex compiled without --enable-fixed-point.
+ */
+ pa_assert_se(speex_resampler_process_interleaved_float(state, in, &inf, out, &outf) == 0);
+
+ pa_memblock_release(input->memblock);
+ pa_memblock_release(output->memblock);
+
+ pa_assert(inf == in_n_frames);
+ *out_n_frames = outf;
+
+ return 0;
+}
+
+static unsigned speex_resample_int(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
+ int16_t *in, *out;
+ uint32_t inf = in_n_frames, outf = *out_n_frames;
+ SpeexResamplerState *state;
+
+ pa_assert(r);
+ pa_assert(input);
+ pa_assert(output);
+ pa_assert(out_n_frames);
+
+ state = r->impl.data;
+
+ in = pa_memblock_acquire_chunk(input);
+ out = pa_memblock_acquire_chunk(output);
+
+ pa_assert_se(speex_resampler_process_interleaved_int(state, in, &inf, out, &outf) == 0);
+
+ pa_memblock_release(input->memblock);
+ pa_memblock_release(output->memblock);
+
+ pa_assert(inf == in_n_frames);
+ *out_n_frames = outf;
+
+ return 0;
+}
+
+static void speex_update_rates(pa_resampler *r) {
+ SpeexResamplerState *state;
+ pa_assert(r);
+
+ state = r->impl.data;
+
+ pa_assert_se(speex_resampler_set_rate(state, r->i_ss.rate, r->o_ss.rate) == 0);
+}
+
+static void speex_reset(pa_resampler *r) {
+ SpeexResamplerState *state;
+ pa_assert(r);
+
+ state = r->impl.data;
+
+ pa_assert_se(speex_resampler_reset_mem(state) == 0);
+}
+
+static void speex_free(pa_resampler *r) {
+ SpeexResamplerState *state;
+ pa_assert(r);
+
+ state = r->impl.data;
+ if (!state)
+ return;
+
+ speex_resampler_destroy(state);
+}
+
+int pa_resampler_speex_init(pa_resampler *r) {
+ int q, err;
+ SpeexResamplerState *state;
+
+ pa_assert(r);
+
+ r->impl.free = speex_free;
+ r->impl.update_rates = speex_update_rates;
+ r->impl.reset = speex_reset;
+
+ if (r->method >= PA_RESAMPLER_SPEEX_FIXED_BASE && r->method <= PA_RESAMPLER_SPEEX_FIXED_MAX) {
+
+ q = r->method - PA_RESAMPLER_SPEEX_FIXED_BASE;
+ r->impl.resample = speex_resample_int;
+
+ } else {
+ pa_assert(r->method >= PA_RESAMPLER_SPEEX_FLOAT_BASE && r->method <= PA_RESAMPLER_SPEEX_FLOAT_MAX);
+
+ q = r->method - PA_RESAMPLER_SPEEX_FLOAT_BASE;
+ r->impl.resample = speex_resample_float;
+ }
+
+ pa_log_info("Choosing speex quality setting %i.", q);
+
+ if (!(state = speex_resampler_init(r->work_channels, r->i_ss.rate, r->o_ss.rate, q, &err)))
+ return -1;
+
+ r->impl.data = state;
+
+ return 0;
+}
diff --git a/src/pulsecore/resampler/trivial.c b/src/pulsecore/resampler/trivial.c
new file mode 100644
index 0000000..09c81ee
--- /dev/null
+++ b/src/pulsecore/resampler/trivial.c
@@ -0,0 +1,102 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+
+#include "pulsecore/resampler.h"
+
+struct trivial_data { /* data specific to the trivial resampler */
+ unsigned o_counter;
+ unsigned i_counter;
+};
+
+static unsigned trivial_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
+ unsigned i_index, o_index;
+ void *src, *dst;
+ struct trivial_data *trivial_data;
+
+ pa_assert(r);
+ pa_assert(input);
+ pa_assert(output);
+ pa_assert(out_n_frames);
+
+ trivial_data = r->impl.data;
+
+ src = pa_memblock_acquire_chunk(input);
+ dst = pa_memblock_acquire_chunk(output);
+
+ for (o_index = 0;; o_index++, trivial_data->o_counter++) {
+ i_index = ((uint64_t) trivial_data->o_counter * r->i_ss.rate) / r->o_ss.rate;
+ i_index = i_index > trivial_data->i_counter ? i_index - trivial_data->i_counter : 0;
+
+ if (i_index >= in_n_frames)
+ break;
+
+ pa_assert_fp(o_index * r->w_fz < pa_memblock_get_length(output->memblock));
+
+ memcpy((uint8_t*) dst + r->w_fz * o_index, (uint8_t*) src + r->w_fz * i_index, (int) r->w_fz);
+ }
+
+ pa_memblock_release(input->memblock);
+ pa_memblock_release(output->memblock);
+
+ *out_n_frames = o_index;
+
+ trivial_data->i_counter += in_n_frames;
+
+ /* Normalize counters */
+ while (trivial_data->i_counter >= r->i_ss.rate) {
+ pa_assert(trivial_data->o_counter >= r->o_ss.rate);
+
+ trivial_data->i_counter -= r->i_ss.rate;
+ trivial_data->o_counter -= r->o_ss.rate;
+ }
+
+ return 0;
+}
+
+static void trivial_update_rates_or_reset(pa_resampler *r) {
+ struct trivial_data *trivial_data;
+ pa_assert(r);
+
+ trivial_data = r->impl.data;
+
+ trivial_data->i_counter = 0;
+ trivial_data->o_counter = 0;
+}
+
+int pa_resampler_trivial_init(pa_resampler *r) {
+ struct trivial_data *trivial_data;
+ pa_assert(r);
+
+ trivial_data = pa_xnew0(struct trivial_data, 1);
+
+ r->impl.resample = trivial_resample;
+ r->impl.update_rates = trivial_update_rates_or_reset;
+ r->impl.reset = trivial_update_rates_or_reset;
+ r->impl.data = trivial_data;
+
+ return 0;
+}
--
1.9.1
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