| c732d49e |
* Contact for licensing options: <licensing-mcpttclient(at)mcopenplatform(dot)com>
*
* The original file was part of Open Source Doubango Framework
* Copyright (C) 2010-2011 Mamadou Diop.
* Copyright (C) 2012 Doubango Telecom <http://doubango.org>
*
* 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/alsa/tdav_consumer_alsa.h"
#if HAVE_ALSA_ASOUNDLIB_H
#include "tinydav/audio/alsa/tdav_common_alsa.h"
#define ALSA_DEBUG_INFO(FMT, ...) TSK_DEBUG_INFO("[ALSA Consumer] " FMT, ##__VA_ARGS__)
#define ALSA_DEBUG_WARN(FMT, ...) TSK_DEBUG_WARN("[ALSA Consumer] " FMT, ##__VA_ARGS__)
#define ALSA_DEBUG_ERROR(FMT, ...) TSK_DEBUG_ERROR("[ALSA Consumer] " FMT, ##__VA_ARGS__)
#define ALSA_DEBUG_FATAL(FMT, ...) TSK_DEBUG_FATAL("[ALSA Consumer] " FMT, ##__VA_ARGS__)
typedef struct tdav_consumer_alsa_s
{
TDAV_DECLARE_CONSUMER_AUDIO;
tsk_bool_t b_muted;
tsk_bool_t b_started;
tsk_bool_t b_paused;
tsk_thread_handle_t* tid[1];
struct tdav_common_alsa_s alsa_common;
}
tdav_consumer_alsa_t;
static void* TSK_STDCALL _tdav_producer_alsa_playback_thread(void *param)
{
tdav_consumer_alsa_t* p_alsa = (tdav_consumer_alsa_t*)param;
int err;
ALSA_DEBUG_INFO("__playback_thread -- START");
tsk_thread_set_priority_2(TSK_THREAD_PRIORITY_TIME_CRITICAL);
while (p_alsa->b_started) {
tdav_common_alsa_lock(&p_alsa->alsa_common);
//snd_pcm_wait(p_alsa->alsa_common.p_handle, 20);
//ALSA_DEBUG_INFO ("get (%d)", p_alsa->alsa_common.n_buff_size_in_bytes);
err = tdav_consumer_audio_get(TDAV_CONSUMER_AUDIO(p_alsa), p_alsa->alsa_common.p_buff_ptr, p_alsa->alsa_common.n_buff_size_in_bytes); // requires 16bits, thread-safe
//ALSA_DEBUG_INFO ("get returned %d", err);
if (err < p_alsa->alsa_common.n_buff_size_in_bytes) {
memset(((uint8_t*)p_alsa->alsa_common.p_buff_ptr) + err, 0, (p_alsa->alsa_common.n_buff_size_in_bytes - err));
}
if ((err = snd_pcm_writei(p_alsa->alsa_common.p_handle, p_alsa->alsa_common.p_buff_ptr, p_alsa->alsa_common.n_buff_size_in_samples)) != p_alsa->alsa_common.n_buff_size_in_samples) {
if (err == -EPIPE) { // pipe broken
err = snd_pcm_recover(p_alsa->alsa_common.p_handle, err, 0);
if (err == 0) {
ALSA_DEBUG_INFO ("recovered");
goto next;
}
}
ALSA_DEBUG_ERROR ("Failed to read data from audio interface failed (%d->%s)", err, snd_strerror(err));
tdav_common_alsa_unlock(&p_alsa->alsa_common);
goto bail;
}
tdav_consumer_audio_tick(TDAV_CONSUMER_AUDIO(p_alsa));
next:
tdav_common_alsa_unlock(&p_alsa->alsa_common);
}
bail:
ALSA_DEBUG_INFO("__playback_thread -- STOP");
return tsk_null;
}
/* ============ Media Consumer Interface ================= */
static int tdav_consumer_alsa_set(tmedia_consumer_t* self, const tmedia_param_t* param)
{
tdav_consumer_alsa_t* p_alsa = (tdav_consumer_alsa_t*)self;
int ret = 0;
ret = tdav_consumer_audio_set(TDAV_CONSUMER_AUDIO(self), param);
return ret;
}
static int tdav_consumer_alsa_prepare(tmedia_consumer_t* self, const tmedia_codec_t* codec)
{
tdav_consumer_alsa_t* p_alsa = (tdav_consumer_alsa_t*)self;
int err = 0;
ALSA_DEBUG_INFO("******* tdav_consumer_alsa_prepare ******");
if (! p_alsa || !codec && codec->plugin) {
ALSA_DEBUG_ERROR("Invalid parameter");
return -1;
}
tdav_common_alsa_lock(&p_alsa->alsa_common);
// Set using requested
TMEDIA_CONSUMER(p_alsa)->audio.ptime = TMEDIA_CODEC_PTIME_AUDIO_DECODING(codec);
TMEDIA_CONSUMER(p_alsa)->audio.in.channels = TMEDIA_CODEC_CHANNELS_AUDIO_DECODING(codec);
TMEDIA_CONSUMER(p_alsa)->audio.in.rate = TMEDIA_CODEC_RATE_DECODING(codec);
// Prepare
err = tdav_common_alsa_prepare(&p_alsa->alsa_common, tsk_false/*is_record*/, TMEDIA_CONSUMER( p_alsa)->audio.ptime, TMEDIA_CONSUMER( p_alsa)->audio.in.channels, TMEDIA_CONSUMER( p_alsa)->audio.in.rate);
if (err) {
goto bail;
}
ALSA_DEBUG_INFO("prepared: req_channels=%d; req_rate=%d, resp_channels=%d; resp_rate=%d",
TMEDIA_CONSUMER(p_alsa)->audio.in.channels, TMEDIA_CONSUMER(p_alsa)->audio.in.rate,
p_alsa->alsa_common.channels, p_alsa->alsa_common.sample_rate);
// Set using supported (up to the resampler to convert to requested)
TMEDIA_CONSUMER(p_alsa)->audio.out.channels = p_alsa->alsa_common.channels;
TMEDIA_CONSUMER(p_alsa)->audio.out.rate = p_alsa->alsa_common.sample_rate;
bail:
tdav_common_alsa_unlock(&p_alsa->alsa_common);
return err;
}
static int tdav_consumer_alsa_start(tmedia_consumer_t* self)
{
tdav_consumer_alsa_t* p_alsa = (tdav_consumer_alsa_t*)self;
int err = 0;
ALSA_DEBUG_INFO("******* tdav_consumer_alsa_start ******");
if (!p_alsa) {
ALSA_DEBUG_ERROR("Invalid parameter");
return -1;
}
tdav_common_alsa_lock(&p_alsa->alsa_common);
if (p_alsa->b_started) {
ALSA_DEBUG_WARN("Already started");
goto bail;
}
/* start device */
err = tdav_common_alsa_start(&p_alsa->alsa_common);
if (err) {
goto bail;
}
/* start thread */
p_alsa->b_started = tsk_true;
tsk_thread_create(&p_alsa->tid[0], _tdav_producer_alsa_playback_thread, p_alsa);
ALSA_DEBUG_INFO("started");
bail:
tdav_common_alsa_unlock(&p_alsa->alsa_common);
return err;
}
static int tdav_consumer_alsa_consume(tmedia_consumer_t* self, const void* buffer, tsk_size_t size, const tsk_object_t* proto_hdr)
{
int err = 0;
tdav_consumer_alsa_t* p_alsa = (tdav_consumer_alsa_t*)self;
if (!p_alsa || !buffer || !size) {
ALSA_DEBUG_ERROR("Invalid paramter");
return -1;
}
//tdav_common_alsa_lock(&p_alsa->alsa_common);
if (!p_alsa->b_started) {
ALSA_DEBUG_WARN("Not started");
err = -2;
goto bail;
}
if ((err = tdav_consumer_audio_put(TDAV_CONSUMER_AUDIO(p_alsa), buffer, size, proto_hdr))) {//thread-safe
ALSA_DEBUG_WARN("Failed to put audio data to the jitter buffer");
goto bail;
}
bail:
//tdav_common_alsa_unlock(&p_alsa->alsa_common);
return err;
}
static int tdav_consumer_alsa_pause(tmedia_consumer_t* self)
{
return 0;
}
static int tdav_consumer_alsa_stop(tmedia_consumer_t* self)
{
tdav_consumer_alsa_t* p_alsa = (tdav_consumer_alsa_t*)self;
int err;
if (!p_alsa) {
ALSA_DEBUG_ERROR("Invalid parameter");
return -1;
}
/* should be done here */
p_alsa->b_started = tsk_false;
err = tdav_common_alsa_stop(&p_alsa->alsa_common);
/* stop thread */
if (p_alsa->tid[0]) {
tsk_thread_join(&(p_alsa->tid[0]));
}
ALSA_DEBUG_INFO("stopped");
return 0;
}
//
// ALSA consumer object definition
//
/* constructor */
static tsk_object_t* tdav_consumer_alsa_ctor(tsk_object_t * self, va_list * app)
{
tdav_consumer_alsa_t *p_alsa = self;
if (p_alsa) {
ALSA_DEBUG_INFO("create");
/* init base */
tdav_consumer_audio_init(TDAV_CONSUMER_AUDIO(p_alsa));
/* init self */
tdav_common_alsa_init(&p_alsa->alsa_common);
}
return self;
}
/* destructor */
static tsk_object_t* tdav_consumer_alsa_dtor(tsk_object_t * self)
{
tdav_consumer_alsa_t *p_alsa = self;
if (p_alsa) {
/* stop */
if (p_alsa->b_started) {
tdav_consumer_alsa_stop((tmedia_consumer_t*)p_alsa);
}
/* deinit base */
tdav_consumer_audio_deinit(TDAV_CONSUMER_AUDIO(p_alsa));
/* deinit self */
tdav_common_alsa_deinit(&p_alsa->alsa_common);
ALSA_DEBUG_INFO("*** destroyed ***");
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_consumer_alsa_def_s =
{
sizeof(tdav_consumer_alsa_t),
tdav_consumer_alsa_ctor,
tdav_consumer_alsa_dtor,
tdav_consumer_audio_cmp,
};
/* plugin definition*/
static const tmedia_consumer_plugin_def_t tdav_consumer_alsa_plugin_def_s =
{
&tdav_consumer_alsa_def_s,
tmedia_audio,
"Linux ALSA consumer",
tdav_consumer_alsa_set,
tdav_consumer_alsa_prepare,
tdav_consumer_alsa_start,
tdav_consumer_alsa_consume,
tdav_consumer_alsa_pause,
tdav_consumer_alsa_stop
};
const tmedia_consumer_plugin_def_t *tdav_consumer_alsa_plugin_def_t = &tdav_consumer_alsa_plugin_def_s;
#endif /* #if HAVE_ALSA_ASOUNDLIB_H */ |