diff options
Diffstat (limited to 'tinyDAV/src/audio/coreaudio/tdav_producer_coreaudio.c')
| -rw-r--r-- | tinyDAV/src/audio/coreaudio/tdav_producer_coreaudio.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/tinyDAV/src/audio/coreaudio/tdav_producer_coreaudio.c b/tinyDAV/src/audio/coreaudio/tdav_producer_coreaudio.c new file mode 100644 index 0000000..e0cc3e8 --- /dev/null +++ b/tinyDAV/src/audio/coreaudio/tdav_producer_coreaudio.c @@ -0,0 +1,229 @@ +/**@file tdav_producer_coreaudio.c
+ * @brief Audio Producer for MacOSX and iOS platforms.
+ *
+ * @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_coreaudio.h"
+
+
+// http://developer.apple.com/library/mac/#documentation/MusicAudio/Reference/AudioQueueReference/Reference/reference.html
+
+#if HAVE_COREAUDIO
+
+#include "tsk_thread.h"
+#include "tsk_memory.h"
+#include "tsk_debug.h"
+
+void __handle_input_buffer (void *userdata, AudioQueueRef queue, AudioQueueBufferRef buffer, const AudioTimeStamp *start_time, UInt32 number_packet_descriptions, const AudioStreamPacketDescription *packet_descriptions ) {
+ OSStatus ret;
+ tdav_producer_coreaudio_t* producer = (tdav_producer_coreaudio_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
+ ret = AudioQueueEnqueueBuffer(producer->queue, buffer, 0, NULL);
+}
+
+/* ============ Media Producer Interface ================= */
+#define tdav_producer_coreaudio_set tsk_null
+
+int tdav_producer_coreaudio_prepare(tmedia_producer_t* self, const tmedia_codec_t* codec)
+{
+ OSStatus ret;
+ tsk_size_t i;
+ tdav_producer_coreaudio_t* producer = (tdav_producer_coreaudio_t*)self;
+
+ if(!producer || !codec && codec->plugin){
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return -1;
+ }
+
+ TDAV_PRODUCER_AUDIO(producer)->channels = codec->plugin->audio.channels;
+ TDAV_PRODUCER_AUDIO(producer)->rate = codec->plugin->rate;
+ /* codec should have ptime */
+
+
+ // Set audio category
+ UInt32 category = kAudioSessionCategory_PlayAndRecord;
+ AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(category), &category);
+
+ // Create the audio stream description
+ AudioStreamBasicDescription *description = &(producer->description);
+ description->mSampleRate = TDAV_PRODUCER_AUDIO(producer)->rate;
+ description->mFormatID = kAudioFormatLinearPCM;
+ description->mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
+ description->mChannelsPerFrame = TDAV_PRODUCER_AUDIO(producer)->channels;
+ description->mFramesPerPacket = 1;
+ description->mBitsPerChannel = TDAV_PRODUCER_AUDIO(producer)->bits_per_sample;
+ description->mBytesPerPacket = description->mBitsPerChannel / 8 * description->mChannelsPerFrame;
+ description->mBytesPerFrame = description->mBytesPerPacket;
+ description->mReserved = 0;
+
+ int packetperbuffer = 1000 / TDAV_PRODUCER_AUDIO(producer)->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;
+}
+
+int tdav_producer_coreaudio_start(tmedia_producer_t* self)
+{
+ OSStatus ret;
+ tdav_producer_coreaudio_t* producer = (tdav_producer_coreaudio_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;
+}
+
+int tdav_producer_coreaudio_pause(tmedia_producer_t* self)
+{
+ OSStatus ret;
+ tdav_producer_coreaudio_t* producer = (tdav_producer_coreaudio_t*)self;
+
+ if(!producer){
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return -1;
+ }
+
+ ret = AudioQueuePause(producer->queue);
+
+ return ret;
+}
+
+int tdav_producer_coreaudio_stop(tmedia_producer_t* self)
+{
+ OSStatus ret;
+ tdav_producer_coreaudio_t* producer = (tdav_producer_coreaudio_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_coreaudio_ctor(tsk_object_t * self, va_list * app)
+{
+ tdav_producer_coreaudio_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_coreaudio_dtor(tsk_object_t * self)
+{
+ tdav_producer_coreaudio_t *producer = self;
+ if(producer){
+ // Stop the producer if not done
+ if(producer->started){
+ tdav_producer_coreaudio_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_coreaudio_def_s =
+{
+ sizeof(tdav_producer_coreaudio_t),
+ tdav_producer_coreaudio_ctor,
+ tdav_producer_coreaudio_dtor,
+ tdav_producer_audio_cmp,
+};
+/* plugin definition*/
+static const tmedia_producer_plugin_def_t tdav_producer_coreaudio_plugin_def_s =
+{
+ &tdav_producer_coreaudio_def_s,
+
+ tmedia_audio,
+ "Apple CoreAudio producer",
+
+ tdav_producer_coreaudio_set,
+ tdav_producer_coreaudio_prepare,
+ tdav_producer_coreaudio_start,
+ tdav_producer_coreaudio_pause,
+ tdav_producer_coreaudio_stop
+};
+const tmedia_producer_plugin_def_t *tdav_producer_coreaudio_plugin_def_t = &tdav_producer_coreaudio_plugin_def_s;
+
+#endif /* HAVE_COREAUDIO */
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