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-rw-r--r--tinyDAV/src/audio/tdav_speex_resampler.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/tinyDAV/src/audio/tdav_speex_resampler.c b/tinyDAV/src/audio/tdav_speex_resampler.c
new file mode 100644
index 0000000..f71ddd2
--- /dev/null
+++ b/tinyDAV/src/audio/tdav_speex_resampler.c
@@ -0,0 +1,254 @@
+/*
+* Copyright (C) 2011-2015 Mamadou DIOP.
+*
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* DOUBANGO 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 General Public License
+* along with DOUBANGO.
+*
+*/
+#include "tinydav/audio/tdav_speex_resampler.h"
+
+#if HAVE_SPEEX_DSP && (!defined(HAVE_SPEEX_RESAMPLER) || HAVE_SPEEX_RESAMPLER)
+
+#include <speex/speex_resampler.h>
+
+#include "tsk_memory.h"
+#include "tsk_debug.h"
+
+#define TDAV_SPEEX_RESAMPLER_MAX_QUALITY 10
+
+/** Speex resampler*/
+typedef struct tdav_speex_resampler_s
+{
+ TMEDIA_DECLARE_RESAMPLER;
+
+ tsk_size_t in_size;
+ tsk_size_t out_size;
+ uint32_t in_channels;
+ uint32_t out_channels;
+ uint32_t bytes_per_sample;
+
+ struct{
+ void* ptr;
+ tsk_size_t size_in_samples;
+ } tmp_buffer;
+
+ SpeexResamplerState *state;
+}
+tdav_speex_resampler_t;
+
+static int tdav_speex_resampler_open(tmedia_resampler_t* self, uint32_t in_freq, uint32_t out_freq, uint32_t frame_duration, uint32_t in_channels, uint32_t out_channels, uint32_t quality, uint32_t bits_per_sample)
+{
+ tdav_speex_resampler_t *resampler = (tdav_speex_resampler_t *)self;
+ int ret = 0;
+ uint32_t bytes_per_sample = (bits_per_sample >> 3);
+
+ if (in_channels != 1 && in_channels != 2) {
+ TSK_DEBUG_ERROR("%d not valid as input channel", in_channels);
+ return -1;
+ }
+ if (out_channels != 1 && out_channels != 2) {
+ TSK_DEBUG_ERROR("%d not valid as output channel", out_channels);
+ return -1;
+ }
+ if (bytes_per_sample != sizeof(spx_int16_t) && bytes_per_sample != sizeof(float)) {
+ TSK_DEBUG_ERROR("%d not valid as bits_per_sample", bits_per_sample);
+ return -1;
+ }
+
+ if (!(resampler->state = speex_resampler_init(in_channels, in_freq, out_freq, TSK_CLAMP(0, quality, TDAV_SPEEX_RESAMPLER_MAX_QUALITY), &ret))) {
+ TSK_DEBUG_ERROR("speex_resampler_init() returned %d", ret);
+ return -2;
+ }
+
+ resampler->bytes_per_sample = bytes_per_sample;
+ resampler->in_size = ((in_freq * frame_duration) / 1000) << (in_channels == 2 ? 1 : 0);
+ resampler->out_size = ((out_freq * frame_duration) / 1000) << (out_channels == 2 ? 1 : 0);
+ resampler->in_channels = in_channels;
+ resampler->out_channels = out_channels;
+
+ if (in_channels != out_channels) {
+ resampler->tmp_buffer.size_in_samples = ((TSK_MAX(in_freq, out_freq) * frame_duration) / 1000) << (TSK_MAX(in_channels, out_channels) == 2 ? 1 : 0);
+ if (!(resampler->tmp_buffer.ptr = tsk_realloc(resampler->tmp_buffer.ptr, resampler->tmp_buffer.size_in_samples * resampler->bytes_per_sample))) {
+ resampler->tmp_buffer.size_in_samples = 0;
+ return -2;
+ }
+ }
+
+ return 0;
+}
+
+
+static tsk_size_t tdav_speex_resampler_process(tmedia_resampler_t* self, const void* in_data, tsk_size_t in_size_in_sample, void* out_data, tsk_size_t out_size_in_sample)
+{
+ tdav_speex_resampler_t *resampler = (tdav_speex_resampler_t *)self;
+ int err = RESAMPLER_ERR_SUCCESS;
+ spx_uint32_t _out_size_in_sample = (spx_uint32_t)out_size_in_sample;
+ if (!resampler->state || !out_data) {
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return 0;
+ }
+
+ if (in_size_in_sample != resampler->in_size) {
+ TSK_DEBUG_ERROR("Input data has wrong size");
+ return 0;
+ }
+
+ if (out_size_in_sample < resampler->out_size) {
+ TSK_DEBUG_ERROR("Output data is too short");
+ return 0;
+ }
+
+ if (resampler->in_channels == resampler->out_channels) {
+ if (resampler->bytes_per_sample == sizeof(spx_int16_t)) {
+ err = speex_resampler_process_int(resampler->state, 0,
+ (const spx_int16_t *)in_data, (spx_uint32_t *)&in_size_in_sample,
+ (spx_int16_t *)out_data, &_out_size_in_sample);
+ }
+ else {
+ err = speex_resampler_process_float(resampler->state, 0,
+ (const float *)in_data, (spx_uint32_t *)&in_size_in_sample,
+ (float *)out_data, &_out_size_in_sample);
+ }
+ }
+ else {
+ spx_uint32_t i, j;
+ // in_channels = 1, out_channels = 2
+ if (resampler->in_channels == 1) {
+ if (resampler->bytes_per_sample == sizeof(spx_int16_t)) {
+ err = speex_resampler_process_int(resampler->state, 0, (const spx_int16_t *)in_data, (spx_uint32_t *)&in_size_in_sample, resampler->tmp_buffer.ptr, &_out_size_in_sample);
+ if (err == RESAMPLER_ERR_SUCCESS) {
+ spx_int16_t* pout_data = (spx_int16_t*)(out_data);
+ for (i = 0, j = 0; i < _out_size_in_sample; ++i, j += 2) {
+ pout_data[j] = pout_data[j + 1] = *(((const spx_int16_t*)resampler->tmp_buffer.ptr) + i);
+ }
+ }
+ }
+ else {
+ err = speex_resampler_process_float(resampler->state, 0, (const float *)in_data, (spx_uint32_t *)&in_size_in_sample, resampler->tmp_buffer.ptr, &_out_size_in_sample);
+ if (err == RESAMPLER_ERR_SUCCESS) {
+ float* pout_data = (float*)(out_data);
+ for (i = 0, j = 0; i < _out_size_in_sample; ++i, j += 2) {
+ pout_data[j] = pout_data[j + 1] = *(((const float*)resampler->tmp_buffer.ptr) + i);
+ }
+ }
+ }
+
+ }
+ else {
+ // in_channels = 2, out_channels = 1
+ spx_uint32_t _out_size2_in_sample = (_out_size_in_sample << 1);
+ if (resampler->bytes_per_sample == sizeof(spx_int16_t)) {
+ err = speex_resampler_process_int(resampler->state, 0,
+ (const spx_int16_t *)in_data, (spx_uint32_t *)&in_size_in_sample,
+ (spx_int16_t *)resampler->tmp_buffer.ptr, &_out_size2_in_sample);
+ if (err == RESAMPLER_ERR_SUCCESS) {
+ spx_int16_t* pout_data = (spx_int16_t*)(out_data);
+ _out_size_in_sample = (spx_uint32_t)resampler->out_size;
+ for (i = 0, j = 0; j < _out_size2_in_sample; ++i, j += 2) {
+ pout_data[i] = *(((const spx_int16_t*)resampler->tmp_buffer.ptr) + j);
+ }
+ }
+ }
+ else {
+ err = speex_resampler_process_float(resampler->state, 0,
+ (const float *)in_data, (spx_uint32_t *)&in_size_in_sample,
+ (float *)resampler->tmp_buffer.ptr, &_out_size2_in_sample);
+ if (err == RESAMPLER_ERR_SUCCESS) {
+ float* pout_data = (float*)(out_data);
+ for (i = 0, j = 0; j < _out_size2_in_sample; ++i, j += 2) {
+ pout_data[i] = *(((const float*)resampler->tmp_buffer.ptr) + j);
+ }
+ }
+ }
+ }
+ }
+
+ if (err != RESAMPLER_ERR_SUCCESS) {
+ TSK_DEBUG_ERROR("speex_resampler_process_int() failed with error code %d", err);
+ return 0;
+ }
+ return (tsk_size_t)_out_size_in_sample;
+}
+
+static int tdav_speex_resampler_close(tmedia_resampler_t* self)
+{
+ tdav_speex_resampler_t *resampler = (tdav_speex_resampler_t *)self;
+
+ if (resampler->state) {
+ speex_resampler_destroy(resampler->state);
+ resampler->state = tsk_null;
+ }
+ return 0;
+}
+
+
+
+//
+// Speex resamplerr Plugin definition
+//
+
+/* constructor */
+static tsk_object_t* tdav_speex_resampler_ctor(tsk_object_t * self, va_list * app)
+{
+ tdav_speex_resampler_t *resampler = (tdav_speex_resampler_t *)self;
+ if (resampler){
+ /* init base */
+ tmedia_resampler_init(TMEDIA_RESAMPLER(resampler));
+ /* init self */
+ }
+ return self;
+}
+/* destructor */
+static tsk_object_t* tdav_speex_resampler_dtor(tsk_object_t * self)
+{
+ tdav_speex_resampler_t *resampler = (tdav_speex_resampler_t *)self;
+ if (resampler){
+ /* deinit base */
+ tmedia_resampler_deinit(TMEDIA_RESAMPLER(resampler));
+ /* deinit self */
+ if (resampler->state) {
+ speex_resampler_destroy(resampler->state);
+ resampler->state = tsk_null;
+ }
+ TSK_FREE(resampler->tmp_buffer.ptr);
+
+ TSK_DEBUG_INFO("*** SpeexDSP resampler (plugin) destroyed ***");
+ }
+
+ return self;
+}
+/* object definition */
+static const tsk_object_def_t tdav_speex_resampler_def_s =
+{
+ sizeof(tdav_speex_resampler_t),
+ tdav_speex_resampler_ctor,
+ tdav_speex_resampler_dtor,
+ tsk_null,
+};
+/* plugin definition*/
+static const tmedia_resampler_plugin_def_t tdav_speex_resampler_plugin_def_s =
+{
+ &tdav_speex_resampler_def_s,
+
+ "Audio Resampler based on Speex",
+
+ tdav_speex_resampler_open,
+ tdav_speex_resampler_process,
+ tdav_speex_resampler_close,
+};
+const tmedia_resampler_plugin_def_t *tdav_speex_resampler_plugin_def_t = &tdav_speex_resampler_plugin_def_s;
+
+
+#endif /* HAVE_SPEEX_DSP */
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