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/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)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.
*
*/
/**@file tdav_producer_audioqueue.c
* @brief Audio Producer for MacOSX and iOS platforms using AudioQueue.
*
* @authors
* - Laurent Etiemble <laurent.etiemble(at)gmail.com>
* - Mamadou Diop <diopmamadou(at)doubango(dot)org>
*
* @date Created: Sat Nov 8 16:54:58 2009 letiemble
*/
#include "tinydav/audio/coreaudio/tdav_producer_audioqueue.h"
// http://developer.apple.com/library/mac/#documentation/MusicAudio/Reference/AudioQueueReference/Reference/reference.html
#if HAVE_COREAUDIO_AUDIO_QUEUE
#include "tsk_string.h"
#include "tsk_thread.h"
#include "tsk_memory.h"
#include "tsk_debug.h"
static void __handle_input_buffer (void *userdata, AudioQueueRef queue, AudioQueueBufferRef buffer, const AudioTimeStamp *start_time, UInt32 number_packet_descriptions, const AudioStreamPacketDescription *packet_descriptions ) {
tdav_producer_audioqueue_t* producer = (tdav_producer_audioqueue_t*)userdata;
if (!producer->started) {
return;
}
// Alert the session that there is new data to send
if(TMEDIA_PRODUCER(producer)->enc_cb.callback) {
TMEDIA_PRODUCER(producer)->enc_cb.callback(TMEDIA_PRODUCER(producer)->enc_cb.callback_data, buffer->mAudioData, buffer->mAudioDataByteSize);
}
// Re-enqueue the buffer
AudioQueueEnqueueBuffer(producer->queue, buffer, 0, NULL);
}
/* ============ Media Producer Interface ================= */
#define tdav_producer_audioqueue_set tsk_null
static int tdav_producer_audioqueue_prepare(tmedia_producer_t* self, const tmedia_codec_t* codec)
{
OSStatus ret;
tsk_size_t i;
tdav_producer_audioqueue_t* producer = (tdav_producer_audioqueue_t*)self;
if(!producer || !codec && codec->plugin){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
TMEDIA_PRODUCER(producer)->audio.channels = TMEDIA_CODEC_CHANNELS_AUDIO_ENCODING(codec);
TMEDIA_PRODUCER(producer)->audio.rate = TMEDIA_CODEC_RATE_ENCODING(codec);
TMEDIA_PRODUCER(producer)->audio.ptime = TMEDIA_CODEC_PTIME_AUDIO_ENCODING(codec);
/* codec should have ptime */
// Set audio category
#if TARGET_OS_IPHONE
UInt32 category = kAudioSessionCategory_PlayAndRecord;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(category), &category);
#endif
// Create the audio stream description
AudioStreamBasicDescription *description = &(producer->description);
description->mSampleRate = TMEDIA_PRODUCER(producer)->audio.rate;
description->mFormatID = kAudioFormatLinearPCM;
description->mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
description->mChannelsPerFrame = TMEDIA_PRODUCER(producer)->audio.channels;
description->mFramesPerPacket = 1;
description->mBitsPerChannel = TMEDIA_PRODUCER(producer)->audio.bits_per_sample;
description->mBytesPerPacket = description->mBitsPerChannel / 8 * description->mChannelsPerFrame;
description->mBytesPerFrame = description->mBytesPerPacket;
description->mReserved = 0;
int packetperbuffer = 1000 / TMEDIA_PRODUCER(producer)->audio.ptime;
producer->buffer_size = description->mSampleRate * description->mBytesPerFrame / packetperbuffer;
// Create the record audio queue
ret = AudioQueueNewInput(&(producer->description),
__handle_input_buffer,
producer,
NULL,
kCFRunLoopCommonModes,
0,
&(producer->queue));
for(i = 0; i < CoreAudioRecordBuffers; i++) {
// Create the buffer for the queue
ret = AudioQueueAllocateBuffer(producer->queue, producer->buffer_size, &(producer->buffers[i]));
if (ret) {
break;
}
// Clear the data
memset(producer->buffers[i]->mAudioData, 0, producer->buffer_size);
producer->buffers[i]->mAudioDataByteSize = producer->buffer_size;
// Enqueue the buffer
ret = AudioQueueEnqueueBuffer(producer->queue, producer->buffers[i], 0, NULL);
if (ret) {
break;
}
}
return 0;
}
static int tdav_producer_audioqueue_start(tmedia_producer_t* self)
{
OSStatus ret;
tdav_producer_audioqueue_t* producer = (tdav_producer_audioqueue_t*)self;
if(!producer){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
if(producer->started){
TSK_DEBUG_WARN("Producer already started");
return 0;
}
producer->started = tsk_true;
ret = AudioQueueStart(producer->queue, NULL);
return ret;
}
static int tdav_producer_audioqueue_pause(tmedia_producer_t* self)
{
OSStatus ret;
tdav_producer_audioqueue_t* producer = (tdav_producer_audioqueue_t*)self;
if(!producer){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
ret = AudioQueuePause(producer->queue);
return ret;
}
static int tdav_producer_audioqueue_stop(tmedia_producer_t* self)
{
OSStatus ret;
tdav_producer_audioqueue_t* producer = (tdav_producer_audioqueue_t*)self;
if(!self){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
if(!producer->started){
TSK_DEBUG_WARN("Producer not started");
return 0;
}
producer->started = tsk_false;
ret = AudioQueueStop(producer->queue, false);
return ret;
}
//
// CoreAudio producer object definition
//
/* constructor */
static tsk_object_t* tdav_producer_audioqueue_ctor(tsk_object_t * self, va_list * app)
{
tdav_producer_audioqueue_t *producer = self;
if(producer){
/* init base */
tdav_producer_audio_init(TDAV_PRODUCER_AUDIO(producer));
/* init self */
// TODO
}
return self;
}
/* destructor */
static tsk_object_t* tdav_producer_audioqueue_dtor(tsk_object_t * self)
{
tdav_producer_audioqueue_t *producer = self;
if(producer){
// Stop the producer if not done
if(producer->started){
tdav_producer_audioqueue_stop(self);
}
// Free all buffers and dispose the queue
if (producer->queue) {
tsk_size_t i;
for(i=0; i<CoreAudioRecordBuffers; i++){
AudioQueueFreeBuffer(producer->queue, producer->buffers[i]);
}
AudioQueueDispose(producer->queue, true);
}
/* deinit base */
tdav_producer_audio_deinit(TDAV_PRODUCER_AUDIO(producer));
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_producer_audioqueue_def_s =
{
sizeof(tdav_producer_audioqueue_t),
tdav_producer_audioqueue_ctor,
tdav_producer_audioqueue_dtor,
tdav_producer_audio_cmp,
};
/* plugin definition*/
static const tmedia_producer_plugin_def_t tdav_producer_audioqueue_plugin_def_s =
{
&tdav_producer_audioqueue_def_s,
tmedia_audio,
"Apple CoreAudio producer (AudioQueue)",
tdav_producer_audioqueue_set,
tdav_producer_audioqueue_prepare,
tdav_producer_audioqueue_start,
tdav_producer_audioqueue_pause,
tdav_producer_audioqueue_stop
};
const tmedia_producer_plugin_def_t *tdav_producer_audioqueue_plugin_def_t = &tdav_producer_audioqueue_plugin_def_s;
#endif /* HAVE_COREAUDIO_AUDIO_QUEUE */
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