music_obj<audio_queue_driver>::music_obj(const boost::shared_ptr<ifdstream>& ifd, bool loop, float gain,
float start, float end)
: packet_index_(0)
, start_packet_index_(0)
, stop_packet_index_(0)
, volume_(gain)
, loop_(loop)
, is_paused_(false)
, ifd_(ifd)
{
LOG("Got ifdstream from path..");
OSStatus res = AudioFileOpenWithCallbacks(this, &music_obj::af_read_cb, &music_obj::af_write_cb,
&music_obj::af_get_size_cb, &music_obj::af_set_size_cb,
kAudioFileCAFType, &audio_file_);
if(res)
{
throw sys_exception("audio_queue_driver: couldn't open audio file in liverpool fs. AudioFile returned "
+ boost::lexical_cast<std::string>(res));
}
UInt32 size = sizeof(data_format_);
AudioFileGetProperty(audio_file_, kAudioFilePropertyDataFormat, &size, &data_format_);
AudioQueueNewOutput(&data_format_, &music_obj<audio_queue_driver>::buffer_cb, this, NULL, NULL, 0, &queue_);
AudioQueueAddPropertyListener(queue_, kAudioQueueProperty_IsRunning, &music_obj<audio_queue_driver>::playback_cb, this);
if (data_format_.mBytesPerPacket == 0 || data_format_.mFramesPerPacket == 0)
{
size = sizeof(max_packet_size_);
AudioFileGetProperty(audio_file_, kAudioFilePropertyPacketSizeUpperBound, &size, &max_packet_size_);
if (max_packet_size_ > BUFFER_SIZE_BYTES)
{
max_packet_size_ = BUFFER_SIZE_BYTES;
}
num_packets_to_read_ = BUFFER_SIZE_BYTES / max_packet_size_;
packet_descriptions_ = (AudioStreamPacketDescription*)malloc(sizeof(AudioStreamPacketDescription) * num_packets_to_read_);
}
else
{
num_packets_to_read_ = BUFFER_SIZE_BYTES / data_format_.mBytesPerPacket;
packet_descriptions_ = NULL;
}
AudioFileGetPropertyInfo(audio_file_, kAudioFilePropertyMagicCookieData, &size, NULL);
if (size > 0)
{
char* cookie = (char*)malloc(sizeof(char) * size);
AudioFileGetProperty(audio_file_, kAudioFilePropertyMagicCookieData, &size, cookie);
AudioQueueSetProperty(queue_, kAudioQueueProperty_MagicCookie, cookie, size);
free(cookie);
}
calculate_seek(start, end);
volume(volume_);
prime();
}
void Audio_Queue::init()
{
OSStatus err = noErr;
cleanup();
// create the audio queue
err = AudioQueueNewOutput(&m_streamDesc, audioQueueOutputCallback, this, CFRunLoopGetCurrent(), NULL, 0, &m_outAQ);
if (err) {
AQ_TRACE("%s: error in AudioQueueNewOutput\n", __PRETTY_FUNCTION__);
m_lastError = err;
if (m_delegate) {
m_delegate->audioQueueInitializationFailed();
}
return;
}
Stream_Configuration *configuration = Stream_Configuration::configuration();
// allocate audio queue buffers
for (unsigned int i = 0; i < configuration->bufferCount; ++i) {
err = AudioQueueAllocateBuffer(m_outAQ, configuration->bufferSize, &m_audioQueueBuffer[i]);
if (err) {
/* If allocating the buffers failed, everything else will fail, too.
* Dispose the queue so that we can later on detect that this
* queue in fact has not been initialized.
*/
AQ_TRACE("%s: error in AudioQueueAllocateBuffer\n", __PRETTY_FUNCTION__);
(void)AudioQueueDispose(m_outAQ, true);
m_outAQ = 0;
m_lastError = err;
if (m_delegate) {
m_delegate->audioQueueInitializationFailed();
}
return;
}
}
// listen for kAudioQueueProperty_IsRunning
err = AudioQueueAddPropertyListener(m_outAQ, kAudioQueueProperty_IsRunning, audioQueueIsRunningCallback, this);
if (err) {
AQ_TRACE("%s: error in AudioQueueAddPropertyListener\n", __PRETTY_FUNCTION__);
m_lastError = err;
return;
}
if (m_initialOutputVolume != 1.0) {
setVolume(m_initialOutputVolume);
}
}
void MyPropertyListenerProc( void * inClientData,
AudioFileStreamID inAudioFileStream,
AudioFileStreamPropertyID inPropertyID,
UInt32 * ioFlags)
{
// this is called by audio file stream when it finds property values
MyData* myData = (MyData*)inClientData;
OSStatus err = noErr;
printf("found property '%c%c%c%c'\n", (inPropertyID>>24)&255, (inPropertyID>>16)&255, (inPropertyID>>8)&255, inPropertyID&255);
switch (inPropertyID) {
case kAudioFileStreamProperty_ReadyToProducePackets :
{
// the file stream parser is now ready to produce audio packets.
// get the stream format.
AudioStreamBasicDescription asbd;
UInt32 asbdSize = sizeof(asbd);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_DataFormat, &asbdSize, &asbd);
if (err) { PRINTERROR("get kAudioFileStreamProperty_DataFormat"); myData->failed = true; break; }
// create the audio queue
err = AudioQueueNewOutput(&asbd, MyAudioQueueOutputCallback, myData, NULL, NULL, 0, &myData->audioQueue);
if (err) { PRINTERROR("AudioQueueNewOutput"); myData->failed = true; break; }
// allocate audio queue buffers
for (unsigned int i = 0; i < kNumAQBufs; ++i) {
err = AudioQueueAllocateBuffer(myData->audioQueue, kAQBufSize, &myData->audioQueueBuffer[i]);
if (err) { PRINTERROR("AudioQueueAllocateBuffer"); myData->failed = true; break; }
}
// get the cookie size
UInt32 cookieSize;
Boolean writable;
err = AudioFileStreamGetPropertyInfo(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, &writable);
if (err) { PRINTERROR("info kAudioFileStreamProperty_MagicCookieData"); break; }
printf("cookieSize %d\n", cookieSize);
// get the cookie data
void* cookieData = calloc(1, cookieSize);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, cookieData);
if (err) { PRINTERROR("get kAudioFileStreamProperty_MagicCookieData"); free(cookieData); break; }
// set the cookie on the queue.
err = AudioQueueSetProperty(myData->audioQueue, kAudioQueueProperty_MagicCookie, cookieData, cookieSize);
free(cookieData);
if (err) { PRINTERROR("set kAudioQueueProperty_MagicCookie"); break; }
// listen for kAudioQueueProperty_IsRunning
err = AudioQueueAddPropertyListener(myData->audioQueue, kAudioQueueProperty_IsRunning, MyAudioQueueIsRunningCallback, myData);
if (err) { PRINTERROR("AudioQueueAddPropertyListener"); myData->failed = true; break; }
break;
}
}
}
music_obj<audio_queue_driver>::music_obj(const std::string& file_path, bool loop, float gain,
float start, float end)
: packet_index_(0)
, start_packet_index_(0)
, stop_packet_index_(0)
, volume_(gain)
, loop_(loop)
, is_paused_(false)
{
CFURLRef file_url = CFURLCreateFromFileSystemRepresentation(NULL, (const UInt8 *)file_path.c_str(), file_path.size(), false);
OSStatus res = AudioFileOpenURL(file_url, kAudioFileReadPermission, kAudioFileCAFType, &audio_file_);
CFRelease(file_url);
if(res)
{
throw sys_exception("audio_queue_driver: couldn't open audio file at '" + file_path + "'");
}
UInt32 size = sizeof(data_format_);
AudioFileGetProperty(audio_file_, kAudioFilePropertyDataFormat, &size, &data_format_);
AudioQueueNewOutput(&data_format_, &music_obj<audio_queue_driver>::buffer_cb, this, NULL, NULL, 0, &queue_);
AudioQueueAddPropertyListener(queue_, kAudioQueueProperty_IsRunning, &music_obj<audio_queue_driver>::playback_cb, this);
if (data_format_.mBytesPerPacket == 0 || data_format_.mFramesPerPacket == 0)
{
size = sizeof(max_packet_size_);
AudioFileGetProperty(audio_file_, kAudioFilePropertyPacketSizeUpperBound, &size, &max_packet_size_);
if (max_packet_size_ > BUFFER_SIZE_BYTES)
{
max_packet_size_ = BUFFER_SIZE_BYTES;
}
num_packets_to_read_ = BUFFER_SIZE_BYTES / max_packet_size_;
packet_descriptions_ = (AudioStreamPacketDescription*)malloc(sizeof(AudioStreamPacketDescription) * num_packets_to_read_);
}
else
{
num_packets_to_read_ = BUFFER_SIZE_BYTES / data_format_.mBytesPerPacket;
packet_descriptions_ = NULL;
}
AudioFileGetPropertyInfo(audio_file_, kAudioFilePropertyMagicCookieData, &size, NULL);
if (size > 0)
{
char* cookie = (char*)malloc(sizeof(char) * size);
AudioFileGetProperty(audio_file_, kAudioFilePropertyMagicCookieData, &size, cookie);
AudioQueueSetProperty(queue_, kAudioQueueProperty_MagicCookie, cookie, size);
free(cookie);
}
calculate_seek(start, end);
volume(volume_);
prime();
}
void Audio_Queue::handlePropertyChange(AudioFileStreamID inAudioFileStream, AudioFileStreamPropertyID inPropertyID, UInt32 *ioFlags)
{
OSStatus err = noErr;
AQ_TRACE("found property '%lu%lu%lu%lu'\n", (inPropertyID>>24)&255, (inPropertyID>>16)&255, (inPropertyID>>8)&255, inPropertyID&255);
switch (inPropertyID) {
case kAudioFileStreamProperty_ReadyToProducePackets:
{
// the file stream parser is now ready to produce audio packets.
// get the stream format.
AudioStreamBasicDescription asbd;
memset(&asbd, 0, sizeof(asbd));
UInt32 asbdSize = sizeof(asbd);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_DataFormat, &asbdSize, &asbd);
if (err) {
AQ_TRACE("get kAudioFileStreamProperty_DataFormat\n");
m_lastError = err;
break;
}
// create the audio queue
err = AudioQueueNewOutput(&asbd, audioQueueOutputCallback, this, NULL, NULL, 0, &m_outAQ);
if (err) {
AQ_TRACE("AudioQueueNewOutput\n");
m_lastError = err;
break;
}
// allocate audio queue buffers
for (unsigned int i = 0; i < AQ_BUFFERS; ++i) {
err = AudioQueueAllocateBuffer(m_outAQ, AQ_BUFSIZ, &m_audioQueueBuffer[i]);
if (err) {
AQ_TRACE("AudioQueueAllocateBuffer\n");
m_lastError = err;
break;
}
}
setCookiesForStream(inAudioFileStream);
// listen for kAudioQueueProperty_IsRunning
err = AudioQueueAddPropertyListener(m_outAQ, kAudioQueueProperty_IsRunning, audioQueueIsRunningCallback, this);
if (err) {
AQ_TRACE("error in AudioQueueAddPropertyListener");
m_lastError = err;
break;
}
break;
}
}
}
void AudioStreamDecoder::PropertyCallback(AudioFileStreamID stream, AudioFileStreamPropertyID property, UInt32* flags)
{
if (property != kAudioFileStreamProperty_ReadyToProducePackets)
return;
long err;
void* buffer = NULL;
unsigned char writable;
AudioStreamBasicDescription desc = {0};
UInt32 size = sizeof(desc);
BAIL_IF(!stream || stream != mStream, "Invalid stream %p\n", stream);
err = AudioFileStreamGetProperty(mStream, kAudioFileStreamProperty_DataFormat, &size, &desc);
BAIL_IF(err, "AudioFileStreamGetProperty returned %ld\n", err);
err = AudioQueueNewOutput(&desc, StaticBufferCompleteCallback, this, NULL, NULL, 0, &mQueue);
BAIL_IF(err, "AudioQueueNewOutput returned %ld\n", err);
err = AudioQueueAddPropertyListener(mQueue, kAudioQueueProperty_IsRunning, StaticQueueRunningCallback, this);
BAIL_IF(err, "AudioQueueAddPropertyListener returned %ld\n", err);
for (int i = 0; i < kBufferCount; i++)
{
err = AudioQueueAllocateBufferWithPacketDescriptions(mQueue, kBufferSize, kBufferPacketDescs, mBuffers + i);
BAIL_IF(err, "AudioQueueAllocateBuffer returned %ld\n", err);
}
mCurrentBuffer = mBuffers;
(*mCurrentBuffer)->mUserData = this;
err = AudioFileStreamGetPropertyInfo(mStream, kAudioFileStreamProperty_MagicCookieData, &size, &writable);
BAIL_IF(err, "AudioFileStreamGetPropertyInfo returned %ld\n", err);
buffer = malloc(size);
BAIL_IF(!buffer, "Failed to allocate %u byte buffer for cookie\n", (unsigned int)size);
err = AudioFileStreamGetProperty(mStream, kAudioFileStreamProperty_MagicCookieData, &size, buffer);
BAIL_IF(err, "AudioFileStreamGetProperty returned %ld\n", err);
err = AudioQueueSetProperty(mQueue, kAudioQueueProperty_MagicCookie, buffer, size);
BAIL_IF(err, "AudioQueueSetProperty returned %ld\n", err);
bail:
free(buffer);
}
OSStatus SetupQueue(BG_FileInfo *inFileInfo)
{
UInt32 size = 0;
OSStatus result = AudioQueueNewOutput(&inFileInfo->mFileFormat, QueueCallback, this, CFRunLoopGetCurrent(), kCFRunLoopCommonModes, 0, &mQueue);
AssertNoError("Error creating queue", end);
// (2) If the file has a cookie, we should get it and set it on the AQ
size = sizeof(UInt32);
result = AudioFileGetPropertyInfo (inFileInfo->mAFID, kAudioFilePropertyMagicCookieData, &size, NULL);
if (!result && size) {
char* cookie = new char [size];
result = AudioFileGetProperty (inFileInfo->mAFID, kAudioFilePropertyMagicCookieData, &size, cookie);
AssertNoError("Error getting magic cookie", end);
result = AudioQueueSetProperty(mQueue, kAudioQueueProperty_MagicCookie, cookie, size);
delete [] cookie;
AssertNoError("Error setting magic cookie", end);
}
// channel layout
OSStatus err = AudioFileGetPropertyInfo(inFileInfo->mAFID, kAudioFilePropertyChannelLayout, &size, NULL);
if (err == noErr && size > 0) {
AudioChannelLayout *acl = (AudioChannelLayout *)malloc(size);
result = AudioFileGetProperty(inFileInfo->mAFID, kAudioFilePropertyChannelLayout, &size, acl);
AssertNoError("Error getting channel layout from file", end);
result = AudioQueueSetProperty(mQueue, kAudioQueueProperty_ChannelLayout, acl, size);
free(acl);
AssertNoError("Error setting channel layout on queue", end);
}
// add a notification proc for when the queue stops
result = AudioQueueAddPropertyListener(mQueue, kAudioQueueProperty_IsRunning, QueueStoppedProc, this);
AssertNoError("Error adding isRunning property listener to queue", end);
// we need to reset this variable so that if the queue is stopped mid buffer we don't dispose it
mMakeNewQueueWhenStopped = false;
// volume
result = SetVolume(mVolume);
//end:
return result;
}
void audio_init(audio_player_t *player) {
int i;
TAILQ_INIT(&player->af.q);
player->af.qlen = 0;
pthread_mutex_init(&player->af.mutex, NULL);
pthread_cond_init(&player->af.cond, NULL);
player->internal_state = malloc(sizeof(state_t));
state_t *state = (state_t *) player->internal_state;
bzero(state, sizeof(state_t));
state->desc.mFormatID = kAudioFormatLinearPCM;
state->desc.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
state->desc.mSampleRate = 44100;
state->desc.mChannelsPerFrame = 2;
state->desc.mFramesPerPacket = 1;
state->desc.mBytesPerFrame = sizeof (short) * state->desc.mChannelsPerFrame;
state->desc.mBytesPerPacket = state->desc.mBytesPerFrame;
state->desc.mBitsPerChannel = (state->desc.mBytesPerFrame*8) / state->desc.mChannelsPerFrame;
state->desc.mReserved = 0;
state->buffer_size = state->desc.mBytesPerFrame * state->desc.mSampleRate;
if (noErr != AudioQueueNewOutput(&state->desc, audio_callback, player, NULL, NULL, 0, &state->queue)) {
fprintf(stderr, "audioqueue error\n");
return;
}
AudioQueueAddPropertyListener(state->queue, kAudioQueueProperty_IsRunning, stopped_callback, player);
// Start some empty playback so we'll get the callbacks that fill in the actual audio.
for (i = 0; i < BUFFER_COUNT; ++i) {
AudioQueueAllocateBuffer(state->queue, state->buffer_size, &state->buffers[i]);
state->free_buffers[i] = state->buffers[i];
}
state->free_buffer_count = BUFFER_COUNT;
state->playing = false;
state->should_stop = false;
}
int main (int argc, const char *argv[])
{
OSStatus result;
State *state = NULL;
if (argc != 2) {
printf("Usage: play <file>\n");
goto error;
}
state = StateCreate();
//
// open the audio file
//
CFURLRef fileURL = CFURLCreateFromFileSystemRepresentation(
kCFAllocatorDefault,
(const UInt8*)argv[1],
strlen(argv[1]),
false
);
if (!fileURL) {
Error("Invalid filename");
goto error;
}
result = AudioFileOpenURL(
fileURL,
kAudioFileReadPermission,
0,
&state->audioFile
);
CFRelease(fileURL);
if (result) {
Error("Invalid audio file");
goto error;
}
//
// determine properties of stream including maximum packet size
//
UInt32 propertyDataSize;
AudioStreamBasicDescription streamDescription;
propertyDataSize = sizeof(streamDescription);
result = AudioFileGetProperty(
state->audioFile,
kAudioFilePropertyDataFormat,
&propertyDataSize,
&streamDescription
);
if (result) {
Error(NULL);
goto error;
}
UInt32 maximumPacketSize;
propertyDataSize = sizeof(maximumPacketSize);
result = AudioFileGetProperty(
state->audioFile,
kAudioFilePropertyMaximumPacketSize,
&propertyDataSize,
&maximumPacketSize
);
if (result) {
Error(NULL);
goto error;
}
//
// initialize the audio queue and allocate buffers
//
result = AudioQueueNewOutput(
&streamDescription,
AudioQueueOutput,
state,
CFRunLoopGetCurrent(),
kCFRunLoopDefaultMode,
0,
&state->audioQueue
);
if (result) {
Error("Failed to initialize audio queue");
goto error;
}
state->audioBufferSize = maximumPacketSize * PACKETS_PER_BUFFER;
AudioQueueBufferRef audioQueueBuffers[NUM_BUFFERS];
for (int i = 0; i < NUM_BUFFERS; ++i)
{
result = AudioQueueAllocateBufferWithPacketDescriptions(
state->audioQueue,
state->audioBufferSize,
PACKETS_PER_BUFFER,
&audioQueueBuffers[i]
);
if (result) {
Error("Failed to initialize audio queue buffer");
goto error;
}
}
result = AudioQueueAddPropertyListener(
state->audioQueue,
kAudioQueueProperty_IsRunning,
AudioQueuePropertyListener,
NULL
);
//
// prime and start the audio queue
//
AudioQueueOutput(
state,
state->audioQueue,
audioQueueBuffers[0]
);
result = AudioQueueStart(
state->audioQueue,
NULL
);
if (result) {
Error("Failed to start audio queue");
goto error;
}
//
// start the run loop that will dispatch audio queue callbacks
//
CFRunLoopRun();
StateDestroy(state);
return 0;
error:
if (state) {
StateDestroy(state);
}
return 1;
}
void Audio_Queue::handlePropertyChange(AudioFileStreamID inAudioFileStream, AudioFileStreamPropertyID inPropertyID, UInt32 *ioFlags)
{
OSStatus err = noErr;
AQ_TRACE("found property '%u%u%u%u'\n", (inPropertyID>>24)&255, (inPropertyID>>16)&255, (inPropertyID>>8)&255, inPropertyID&255);
switch (inPropertyID) {
case kAudioFileStreamProperty_ReadyToProducePackets:
{
cleanup();
// create the audio queue
err = AudioQueueNewOutput(&m_streamDesc, audioQueueOutputCallback, this, CFRunLoopGetCurrent(), NULL, 0, &m_outAQ);
if (err) {
AQ_TRACE("%s: error in AudioQueueNewOutput\n", __PRETTY_FUNCTION__);
m_lastError = err;
if (m_delegate) {
m_delegate->audioQueueInitializationFailed();
}
break;
}
Stream_Configuration *configuration = Stream_Configuration::configuration();
// allocate audio queue buffers
for (unsigned int i = 0; i < configuration->bufferCount; ++i) {
err = AudioQueueAllocateBuffer(m_outAQ, configuration->bufferSize, &m_audioQueueBuffer[i]);
if (err) {
/* If allocating the buffers failed, everything else will fail, too.
* Dispose the queue so that we can later on detect that this
* queue in fact has not been initialized.
*/
AQ_TRACE("%s: error in AudioQueueAllocateBuffer\n", __PRETTY_FUNCTION__);
(void)AudioQueueDispose(m_outAQ, true);
m_outAQ = 0;
m_lastError = err;
if (m_delegate) {
m_delegate->audioQueueInitializationFailed();
}
break;
}
}
// listen for kAudioQueueProperty_IsRunning
err = AudioQueueAddPropertyListener(m_outAQ, kAudioQueueProperty_IsRunning, audioQueueIsRunningCallback, this);
if (err) {
AQ_TRACE("%s: error in AudioQueueAddPropertyListener\n", __PRETTY_FUNCTION__);
m_lastError = err;
break;
}
break;
}
}
}
static void
macosx_play (int argc, char *argv [])
{ MacOSXAudioData audio_data ;
OSStatus err ;
int i ;
int k ;
memset (&audio_data, 0x55, sizeof (audio_data)) ;
for (k = 1 ; k < argc ; k++)
{ memset (&(audio_data.sfinfo), 0, sizeof (audio_data.sfinfo)) ;
printf ("Playing %s\n", argv [k]) ;
if (! (audio_data.sndfile = sf_open (argv [k], SFM_READ, &(audio_data.sfinfo))))
{ puts (sf_strerror (NULL)) ;
continue ;
} ;
if (audio_data.sfinfo.channels < 1 || audio_data.sfinfo.channels > 2)
{ printf ("Error : channels = %d.\n", audio_data.sfinfo.channels) ;
continue ;
} ;
/* fill ASBD */
audio_data.format.mSampleRate = audio_data.sfinfo.samplerate ;
audio_data.format.mChannelsPerFrame = audio_data.sfinfo.channels ;
audio_data.format.mFormatID = kAudioFormatLinearPCM ;
audio_data.format.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked ;
audio_data.format.mBytesPerPacket = audio_data.format.mChannelsPerFrame * 2 ;
audio_data.format.mFramesPerPacket = 1 ;
audio_data.format.mBytesPerFrame = audio_data.format.mBytesPerPacket ;
audio_data.format.mBitsPerChannel = 16 ;
audio_data.format.mReserved = 0 ;
/* create the queue */
if ((err = AudioQueueNewOutput (&(audio_data.format), macosx_audio_out_callback, &audio_data,
CFRunLoopGetCurrent (), kCFRunLoopCommonModes, 0, &(audio_data.queue))) != noErr)
{ printf ("AudioQueueNewOutput failed\n") ;
return ;
} ;
/* add property listener */
if ((err = AudioQueueAddPropertyListener (audio_data.queue, kAudioQueueProperty_IsRunning, macosx_audio_out_property_callback, &audio_data)) != noErr)
{ printf ("AudioQueueAddPropertyListener failed\n") ;
return ;
} ;
/* create the buffers */
for (i = 0 ; i < kNumberOfAudioBuffers ; i++)
{ if ((err = AudioQueueAllocateBuffer (audio_data.queue, kBytesPerAudioBuffer, &audio_data.queueBuffer [i])) != noErr)
{ printf ("AudioQueueAllocateBuffer failed\n") ;
return ;
} ;
macosx_fill_buffer (&audio_data, audio_data.queueBuffer [i]) ;
} ;
audio_data.done_playing = SF_FALSE ;
/* start queue */
if ((err = AudioQueueStart (audio_data.queue, NULL)) != noErr)
{ printf ("AudioQueueStart failed\n") ;
return ;
} ;
while (audio_data.done_playing == SF_FALSE)
CFRunLoopRun () ;
/* free the buffers */
for (i = 0 ; i < kNumberOfAudioBuffers ; i++)
{ if ((err = AudioQueueFreeBuffer (audio_data.queue, audio_data.queueBuffer [i])) != noErr)
{ printf ("AudioQueueFreeBuffer failed\n") ;
return ;
} ;
} ;
/* free the queue */
if ((err = AudioQueueDispose (audio_data.queue, true)) != noErr)
{ printf ("AudioQueueDispose failed\n") ;
return ;
} ;
sf_close (audio_data.sndfile) ;
} ;
return ;
} /* macosx_play, AudioQueue implementation */
void AudioOutputDeviceCoreAudio::CreateAndStartAudioQueue() throw(Exception) {
OSStatus res = AudioQueueNewOutput (
&aqPlayerState.mDataFormat,
HandleOutputBuffer,
&aqPlayerState,
CFRunLoopGetCurrent(),
kCFRunLoopCommonModes,
0,
&aqPlayerState.mQueue
);
if(res) {
String s = String("AudioQueueNewOutput: Error ") + ToString(res);
throw Exception(s);
}
CFStringRef devUID = CFStringCreateWithCString (
NULL, CurrentDevice.GetUID().c_str(), kCFStringEncodingASCII
);
res = AudioQueueSetProperty (
aqPlayerState.mQueue,
kAudioQueueProperty_CurrentDevice,
&devUID, sizeof(CFStringRef)
);
CFRelease(devUID);
if(res) {
String s = String("Failed to set audio device: ") + ToString(res);
throw Exception(s);
}
for (int i = 0; i < uiBufferNumber; ++i) {
res = AudioQueueAllocateBuffer (
aqPlayerState.mQueue,
aqPlayerState.bufferByteSize,
&aqPlayerState.mBuffers[i]
);
if(res) {
String s = String("AudioQueueAllocateBuffer: Error ");
throw Exception(s + ToString(res));
}
}
res = AudioQueueAddPropertyListener (
aqPlayerState.mQueue,
kAudioQueueProperty_CurrentDevice,
AudioQueueListener,
NULL
);
if(res) std::cerr << "Failed to register device change listener: " << res << std::endl;
res = AudioQueueAddPropertyListener (
aqPlayerState.mQueue,
kAudioQueueProperty_IsRunning,
AudioQueueListener,
NULL
);
if(res) std::cerr << "Failed to register running listener: " << res << std::endl;
Float32 gain = 1.0;
res = AudioQueueSetParameter (
aqPlayerState.mQueue,
kAudioQueueParam_Volume,
gain
);
if(res) std::cerr << "AudioQueueSetParameter: Error " << res << std::endl;
atomic_set(&(aqPlayerState.mIsRunning), 1);
FillBuffers();
PrimeAudioQueue();
res = AudioQueueStart(aqPlayerState.mQueue, NULL);
if(res) {
String s = String("AudioQueueStart: Error ") + ToString(res);
throw Exception(s);
}
}
// ____________________________________________________________________________________
// main program
int main(int argc, const char *argv[])
{
const char *recordFileName = NULL;
int i, nchannels, bufferByteSize;
float seconds = 0;
AudioStreamBasicDescription recordFormat;
MyRecorder aqr;
UInt32 size;
CFURLRef url;
OSStatus err = noErr;
// fill structures with 0/NULL
memset(&recordFormat, 0, sizeof(recordFormat));
memset(&aqr, 0, sizeof(aqr));
// parse arguments
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (arg[0] == '-') {
switch (arg[1]) {
case 'c':
if (++i == argc) MissingArgument(arg);
if (sscanf(argv[i], "%d", &nchannels) != 1)
usage();
recordFormat.mChannelsPerFrame = nchannels;
break;
case 'd':
if (++i == argc) MissingArgument(arg);
if (StrTo4CharCode(argv[i], &recordFormat.mFormatID) == 0)
ParseError(arg, argv[i]);
break;
case 'r':
if (++i == argc) MissingArgument(arg);
if (sscanf(argv[i], "%lf", &recordFormat.mSampleRate) != 1)
ParseError(arg, argv[i]);
break;
case 's':
if (++i == argc) MissingArgument(arg);
if (sscanf(argv[i], "%f", &seconds) != 1)
ParseError(arg, argv[i]);
break;
case 'v':
aqr.verbose = TRUE;
break;
default:
fprintf(stderr, "unknown option: '%s'\n\n", arg);
usage();
}
} else if (recordFileName != NULL) {
fprintf(stderr, "may only specify one file to record\n\n");
usage();
} else
recordFileName = arg;
}
if (recordFileName == NULL) // no record file path provided
usage();
// determine file format
AudioFileTypeID audioFileType = kAudioFileCAFType; // default to CAF
CFStringRef cfRecordFileName = CFStringCreateWithCString(NULL, recordFileName, kCFStringEncodingUTF8);
InferAudioFileFormatFromFilename(cfRecordFileName, &audioFileType);
CFRelease(cfRecordFileName);
// adapt record format to hardware and apply defaults
if (recordFormat.mSampleRate == 0.)
MyGetDefaultInputDeviceSampleRate(&recordFormat.mSampleRate);
if (recordFormat.mChannelsPerFrame == 0)
recordFormat.mChannelsPerFrame = 2;
if (recordFormat.mFormatID == 0 || recordFormat.mFormatID == kAudioFormatLinearPCM) {
// default to PCM, 16 bit int
recordFormat.mFormatID = kAudioFormatLinearPCM;
recordFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;
recordFormat.mBitsPerChannel = 16;
if (MyFileFormatRequiresBigEndian(audioFileType, recordFormat.mBitsPerChannel))
recordFormat.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
recordFormat.mBytesPerPacket = recordFormat.mBytesPerFrame =
(recordFormat.mBitsPerChannel / 8) * recordFormat.mChannelsPerFrame;
recordFormat.mFramesPerPacket = 1;
recordFormat.mReserved = 0;
}
try {
// create the queue
XThrowIfError(AudioQueueNewInput(
&recordFormat,
MyInputBufferHandler,
&aqr /* userData */,
NULL /* run loop */, NULL /* run loop mode */,
0 /* flags */, &aqr.queue), "AudioQueueNewInput failed");
// get the record format back from the queue's audio converter --
// the file may require a more specific stream description than was necessary to create the encoder.
size = sizeof(recordFormat);
XThrowIfError(AudioQueueGetProperty(aqr.queue, kAudioConverterCurrentOutputStreamDescription,
&recordFormat, &size), "couldn't get queue's format");
// convert recordFileName from C string to CFURL
url = CFURLCreateFromFileSystemRepresentation(NULL, (Byte *)recordFileName, strlen(recordFileName), FALSE);
XThrowIfError(!url, "couldn't create record file");
// create the audio file
err = AudioFileCreateWithURL(url, audioFileType, &recordFormat, kAudioFileFlags_EraseFile,
&aqr.recordFile);
CFRelease(url); // release first, and then bail out on error
XThrowIfError(err, "AudioFileCreateWithURL failed");
// copy the cookie first to give the file object as much info as we can about the data going in
MyCopyEncoderCookieToFile(aqr.queue, aqr.recordFile);
// allocate and enqueue buffers
bufferByteSize = MyComputeRecordBufferSize(&recordFormat, aqr.queue, 0.5); // enough bytes for half a second
for (i = 0; i < kNumberRecordBuffers; ++i) {
AudioQueueBufferRef buffer;
XThrowIfError(AudioQueueAllocateBuffer(aqr.queue, bufferByteSize, &buffer),
"AudioQueueAllocateBuffer failed");
XThrowIfError(AudioQueueEnqueueBuffer(aqr.queue, buffer, 0, NULL),
"AudioQueueEnqueueBuffer failed");
}
// record
if (seconds > 0) {
// user requested a fixed-length recording (specified a duration with -s)
// to time the recording more accurately, watch the queue's IsRunning property
XThrowIfError(AudioQueueAddPropertyListener(aqr.queue, kAudioQueueProperty_IsRunning,
MyPropertyListener, &aqr), "AudioQueueAddPropertyListener failed");
// start the queue
aqr.running = TRUE;
XThrowIfError(AudioQueueStart(aqr.queue, NULL), "AudioQueueStart failed");
CFAbsoluteTime waitUntil = CFAbsoluteTimeGetCurrent() + 10;
// wait for the started notification
while (aqr.queueStartStopTime == 0.) {
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.010, FALSE);
if (CFAbsoluteTimeGetCurrent() >= waitUntil) {
fprintf(stderr, "Timeout waiting for the queue's IsRunning notification\n");
goto cleanup;
}
}
printf("Recording...\n");
CFAbsoluteTime stopTime = aqr.queueStartStopTime + seconds;
CFAbsoluteTime now = CFAbsoluteTimeGetCurrent();
CFRunLoopRunInMode(kCFRunLoopDefaultMode, stopTime - now, FALSE);
} else {
// start the queue
aqr.running = TRUE;
XThrowIfError(AudioQueueStart(aqr.queue, NULL), "AudioQueueStart failed");
// and wait
printf("Recording, press <return> to stop:\n");
getchar();
}
// end recording
printf("* recording done *\n");
aqr.running = FALSE;
XThrowIfError(AudioQueueStop(aqr.queue, TRUE), "AudioQueueStop failed");
// a codec may update its cookie at the end of an encoding session, so reapply it to the file now
MyCopyEncoderCookieToFile(aqr.queue, aqr.recordFile);
cleanup:
AudioQueueDispose(aqr.queue, TRUE);
AudioFileClose(aqr.recordFile);
}
catch (CAXException e) {
char buf[256];
fprintf(stderr, "MyInputBufferHandler: %s (%s)\n", e.mOperation, e.FormatError(buf));
return e.mError;
}
return 0;
}
void StreamPropertyListenerProc(void * inClientData,
AudioFileStreamID inAudioFileStream,
AudioFileStreamPropertyID inPropertyID,
UInt32 * ioFlags)
{
// this is called by audio file stream when it finds property values
struct audioPlayer* player = (struct audioPlayer*)inClientData;
OSStatus err = noErr;
// printf("found property '%c%c%c%c'\n", (inPropertyID>>24)&255, (inPropertyID>>16)&255, (inPropertyID>>8)&255, inPropertyID&255);
switch (inPropertyID) {
case kAudioFileStreamProperty_ReadyToProducePackets :
{
// the file stream parser is now ready to produce audio packets.
// get the stream format.
AudioStreamBasicDescription asbd;
UInt32 asbdSize = sizeof(asbd);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_DataFormat, &asbdSize, &asbd);
if (err) {
PRINTERROR("get kAudioFileStreamProperty_DataFormat");
player->failed = true;
break;
}
//TODO: Is this really right!?!
player->songDuration = player->waith.contentLength * 2000 / asbd.mSampleRate;
player->samplerate = asbd.mSampleRate;
player->packetDuration = asbd.mFramesPerPacket / asbd.mSampleRate;
// create the audio queue
err = AudioQueueNewOutput(&asbd, PianobarAudioQueueOutputCallback, player, NULL, NULL, 0, &player->audioQueue);
if (err) {
PRINTERROR("AudioQueueNewOutput");
player->failed = true;
break;
}
// allocate audio queue buffers
for (unsigned int i = 0; i < kNumAQBufs; ++i) {
err = AudioQueueAllocateBuffer(player->audioQueue, kAQBufSize, &player->audioQueueBuffer[i]);
if (err) {
PRINTERROR("AudioQueueAllocateBuffer");
player->failed = true;
break;
}
}
// get the cookie size
UInt32 cookieSize;
Boolean writable;
err = AudioFileStreamGetPropertyInfo(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, &writable);
if (err) {
PRINTERROR("info kAudioFileStreamProperty_MagicCookieData");
break;
}
// get the cookie data
void* cookieData = calloc(1, cookieSize);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, cookieData);
if (err) {
PRINTERROR("get kAudioFileStreamProperty_MagicCookieData");
free(cookieData);
break;
}
// set the cookie on the queue.
err = AudioQueueSetProperty(player->audioQueue, kAudioQueueProperty_MagicCookie, cookieData, cookieSize);
free(cookieData);
if (err) {
PRINTERROR("set kAudioQueueProperty_MagicCookie");
break;
}
// listen for kAudioQueueProperty_IsRunning
err = AudioQueueAddPropertyListener(player->audioQueue, kAudioQueueProperty_IsRunning, AudioQueueIsRunningCallback, player);
if (err) {
PRINTERROR("AudioQueueAddPropertyListener");
player->failed = true;
break;
}
break;
}
}
}
int
main (int argc, const char *argv[])
{
CFURLRef audioFileURLRef;
OSStatus ret;
audioFileURLRef = CFURLCreateWithFileSystemPath (
kCFAllocatorDefault,
/* CFSTR ("../misc/test.wav"), */
CFSTR ("../misc/alin.wav"),
kCFURLPOSIXPathStyle,
FALSE
);
ret = AudioFileOpenURL(
audioFileURLRef,
kAudioFileReadWritePermission,
0,
&myInfo.mAudioFile);
if (ret != noErr) {
printf("fail to open audio file %x\n", ret);
return 1;
}
UInt32 propSize = sizeof(myInfo.mDataFormat);
ret = AudioFileGetProperty(
myInfo.mAudioFile,
kAudioFilePropertyDataFormat,
&propSize,
&myInfo.mDataFormat
);
if (ret != noErr) {
printf("AudioFileGetProperty error code %d\n", ret);
return 1;
}
printf("sample rate: %f\n"
"mFormatID: %u\n"
"mFormatFlags: %u\n"
"mBytesPerPacket: %u\n"
"mChannelsPerFrame: %u\n",
myInfo.mDataFormat.mSampleRate,
myInfo.mDataFormat.mFormatID,
myInfo.mDataFormat.mFormatFlags,
myInfo.mDataFormat.mBytesPerPacket,
myInfo.mDataFormat.mChannelsPerFrame
);
// Instantiate an audio queue object
ret = AudioQueueNewOutput(
&myInfo.mDataFormat,
AQTestBufferCallback,
&myInfo,
CFRunLoopGetCurrent(),
kCFRunLoopCommonModes,
0,
&myInfo.mQueue
);
if (ret != noErr) {
printf("AudioQueueNewOutput error code %d\n", ret);
return 1;
}
AudioQueueAddPropertyListener(myInfo.mQueue, kAudioQueueProperty_IsRunning,
AudioEnginePropertyListenerProc, &myInfo);
/* FIXME allocate AudioQueue buffer */
int i;
for (i = 0; i < 3; i++) {
AudioQueueAllocateBuffer(myInfo.mQueue, 441 * 4, &myInfo.mBuffers[i]);
}
AudioQueueStart(myInfo.mQueue, NULL);
printf("Run loop\n");
// create a system sound ID to represent the sound file
/* OSStatus error = AudioServicesCreateSystemSoundID (myURLRef, &mySSID); */
// Register the sound completion callback.
// Again, useful when you need to free memory after playing.
/* AudioServicesAddSystemSoundCompletion ( */
/* mySSID, */
/* NULL, */
/* NULL, */
/* MyCompletionCallback, */
/* (void *) myURLRef */
/* ); */
// Play the sound file.
/* AudioServicesPlaySystemSound (mySSID); */
// Invoke a run loop on the current thread to keep the application
// running long enough for the sound to play; the sound completion
// callback later stops this run loop.
CFRunLoopRun ();
return 0;
}
void Audio_Queue::handlePropertyChange(AudioFileStreamID inAudioFileStream, AudioFileStreamPropertyID inPropertyID, UInt32 *ioFlags)
{
OSStatus err = noErr;
AQ_TRACE("found property '%lu%lu%lu%lu'\n", (inPropertyID>>24)&255, (inPropertyID>>16)&255, (inPropertyID>>8)&255, inPropertyID&255);
switch (inPropertyID) {
case kAudioFileStreamProperty_ReadyToProducePackets:
{
cleanup();
// the file stream parser is now ready to produce audio packets.
// get the stream format.
memset(&m_streamDesc, 0, sizeof(m_streamDesc));
UInt32 asbdSize = sizeof(m_streamDesc);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_DataFormat, &asbdSize, &m_streamDesc);
if (err) {
AQ_TRACE("%s: error in kAudioFileStreamProperty_DataFormat\n", __PRETTY_FUNCTION__);
m_lastError = err;
break;
}
// create the audio queue
err = AudioQueueNewOutput(&m_streamDesc, audioQueueOutputCallback, this, CFRunLoopGetCurrent(), NULL, 0, &m_outAQ);
if (err) {
AQ_TRACE("%s: error in AudioQueueNewOutput\n", __PRETTY_FUNCTION__);
if (m_delegate) {
m_delegate->audioQueueInitializationFailed();
}
m_lastError = err;
break;
}
// allocate audio queue buffers
for (unsigned int i = 0; i < AQ_BUFFERS; ++i) {
err = AudioQueueAllocateBuffer(m_outAQ, AQ_BUFSIZ, &m_audioQueueBuffer[i]);
if (err) {
/* If allocating the buffers failed, everything else will fail, too.
* Dispose the queue so that we can later on detect that this
* queue in fact has not been initialized.
*/
AQ_TRACE("%s: error in AudioQueueAllocateBuffer\n", __PRETTY_FUNCTION__);
(void)AudioQueueDispose(m_outAQ, true);
m_outAQ = 0;
if (m_delegate) {
m_delegate->audioQueueInitializationFailed();
}
m_lastError = err;
break;
}
}
setCookiesForStream(inAudioFileStream);
// listen for kAudioQueueProperty_IsRunning
err = AudioQueueAddPropertyListener(m_outAQ, kAudioQueueProperty_IsRunning, audioQueueIsRunningCallback, this);
if (err) {
AQ_TRACE("%s: error in AudioQueueAddPropertyListener\n", __PRETTY_FUNCTION__);
m_lastError = err;
break;
}
break;
}
}
}
int main (int argc, const char * argv[])
{
#if TARGET_OS_WIN32
InitializeQTML(0L);
#endif
const char *fpath = NULL;
Float32 volume = 1;
Float32 duration = -1;
Float32 currentTime = 0.0;
Float32 rate = 0;
int rQuality = 0;
bool doPrint = false;
for (int i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (arg[0] != '-') {
if (fpath != NULL) {
fprintf(stderr, "may only specify one file to play\n");
usage();
}
fpath = arg;
} else {
arg += 1;
if (arg[0] == 'v' || !strcmp(arg, "-volume")) {
if (++i == argc)
MissingArgument();
arg = argv[i];
sscanf(arg, "%f", &volume);
} else if (arg[0] == 't' || !strcmp(arg, "-time")) {
if (++i == argc)
MissingArgument();
arg = argv[i];
sscanf(arg, "%f", &duration);
} else if (arg[0] == 'r' || !strcmp(arg, "-rate")) {
if (++i == argc)
MissingArgument();
arg = argv[i];
sscanf(arg, "%f", &rate);
} else if (arg[0] == 'q' || !strcmp(arg, "-rQuality")) {
if (++i == argc)
MissingArgument();
arg = argv[i];
sscanf(arg, "%d", &rQuality);
} else if (arg[0] == 'h' || !strcmp(arg, "-help")) {
usage();
} else if (arg[0] == 'd' || !strcmp(arg, "-debug")) {
doPrint = true;
} else {
fprintf(stderr, "unknown argument: %s\n\n", arg - 1);
usage();
}
}
}
if (fpath == NULL)
usage();
if (doPrint)
printf ("Playing file: %s\n", fpath);
try {
AQTestInfo myInfo;
CFURLRef sndFile = CFURLCreateFromFileSystemRepresentation (NULL, (const UInt8 *)fpath, strlen(fpath), false);
if (!sndFile) XThrowIfError (!sndFile, "can't parse file path");
OSStatus result = AudioFileOpenURL (sndFile, 0x1/*fsRdPerm*/, 0/*inFileTypeHint*/, &myInfo.mAudioFile);
CFRelease (sndFile);
XThrowIfError(result, "AudioFileOpen failed");
UInt32 size;
XThrowIfError(AudioFileGetPropertyInfo(myInfo.mAudioFile,
kAudioFilePropertyFormatList, &size, NULL), "couldn't get file's format list info");
UInt32 numFormats = size / sizeof(AudioFormatListItem);
AudioFormatListItem *formatList = new AudioFormatListItem [ numFormats ];
XThrowIfError(AudioFileGetProperty(myInfo.mAudioFile,
kAudioFilePropertyFormatList, &size, formatList), "couldn't get file's data format");
numFormats = size / sizeof(AudioFormatListItem); // we need to reassess the actual number of formats when we get it
if (numFormats == 1) {
// this is the common case
myInfo.mDataFormat = formatList[0].mASBD;
// see if there is a channel layout (multichannel file)
result = AudioFileGetPropertyInfo(myInfo.mAudioFile, kAudioFilePropertyChannelLayout, &myInfo.mChannelLayoutSize, NULL);
if (result == noErr && myInfo.mChannelLayoutSize > 0) {
myInfo.mChannelLayout = (AudioChannelLayout *)new char [myInfo.mChannelLayoutSize];
XThrowIfError(AudioFileGetProperty(myInfo.mAudioFile, kAudioFilePropertyChannelLayout, &myInfo.mChannelLayoutSize, myInfo.mChannelLayout), "get audio file's channel layout");
}
} else {
if (doPrint) {
printf ("File has a %d layered data format:\n", (int)numFormats);
for (unsigned int i = 0; i < numFormats; ++i)
CAStreamBasicDescription(formatList[i].mASBD).Print();
}
// now we should look to see which decoders we have on the system
XThrowIfError(AudioFormatGetPropertyInfo(kAudioFormatProperty_DecodeFormatIDs, 0, NULL, &size), "couldn't get decoder id's");
UInt32 numDecoders = size / sizeof(OSType);
OSType *decoderIDs = new OSType [ numDecoders ];
XThrowIfError(AudioFormatGetProperty(kAudioFormatProperty_DecodeFormatIDs, 0, NULL, &size, decoderIDs), "couldn't get decoder id's");
unsigned int i = 0;
for (; i < numFormats; ++i) {
OSType decoderID = formatList[i].mASBD.mFormatID;
bool found = false;
for (unsigned int j = 0; j < numDecoders; ++j) {
if (decoderID == decoderIDs[j]) {
found = true;
break;
}
}
if (found) break;
}
delete [] decoderIDs;
if (i >= numFormats) {
fprintf (stderr, "Cannot play any of the formats in this file\n");
throw kAudioFileUnsupportedDataFormatError;
}
myInfo.mDataFormat = formatList[i].mASBD;
myInfo.mChannelLayoutSize = sizeof(AudioChannelLayout);
myInfo.mChannelLayout = (AudioChannelLayout*)new char [myInfo.mChannelLayoutSize];
myInfo.mChannelLayout->mChannelLayoutTag = formatList[i].mChannelLayoutTag;
myInfo.mChannelLayout->mChannelBitmap = 0;
myInfo.mChannelLayout->mNumberChannelDescriptions = 0;
}
delete [] formatList;
if (doPrint) {
printf ("Playing format: ");
myInfo.mDataFormat.Print();
}
XThrowIfError(AudioQueueNewOutput(&myInfo.mDataFormat, AQTestBufferCallback, &myInfo,
CFRunLoopGetCurrent(), kCFRunLoopCommonModes, 0, &myInfo.mQueue), "AudioQueueNew failed");
UInt32 bufferByteSize;
// we need to calculate how many packets we read at a time, and how big a buffer we need
// we base this on the size of the packets in the file and an approximate duration for each buffer
{
bool isFormatVBR = (myInfo.mDataFormat.mBytesPerPacket == 0 || myInfo.mDataFormat.mFramesPerPacket == 0);
// first check to see what the max size of a packet is - if it is bigger
// than our allocation default size, that needs to become larger
UInt32 maxPacketSize;
size = sizeof(maxPacketSize);
XThrowIfError(AudioFileGetProperty(myInfo.mAudioFile,
kAudioFilePropertyPacketSizeUpperBound, &size, &maxPacketSize), "couldn't get file's max packet size");
// adjust buffer size to represent about a half second of audio based on this format
CalculateBytesForTime (myInfo.mDataFormat, maxPacketSize, 0.5/*seconds*/, &bufferByteSize, &myInfo.mNumPacketsToRead);
if (isFormatVBR)
myInfo.mPacketDescs = new AudioStreamPacketDescription [myInfo.mNumPacketsToRead];
else
myInfo.mPacketDescs = NULL; // we don't provide packet descriptions for constant bit rate formats (like linear PCM)
if (doPrint)
printf ("Buffer Byte Size: %d, Num Packets to Read: %d\n", (int)bufferByteSize, (int)myInfo.mNumPacketsToRead);
}
// (2) If the file has a cookie, we should get it and set it on the AQ
size = sizeof(UInt32);
result = AudioFileGetPropertyInfo (myInfo.mAudioFile, kAudioFilePropertyMagicCookieData, &size, NULL);
if (!result && size) {
char* cookie = new char [size];
XThrowIfError (AudioFileGetProperty (myInfo.mAudioFile, kAudioFilePropertyMagicCookieData, &size, cookie), "get cookie from file");
XThrowIfError (AudioQueueSetProperty(myInfo.mQueue, kAudioQueueProperty_MagicCookie, cookie, size), "set cookie on queue");
delete [] cookie;
}
// set ACL if there is one
if (myInfo.mChannelLayout)
XThrowIfError(AudioQueueSetProperty(myInfo.mQueue, kAudioQueueProperty_ChannelLayout, myInfo.mChannelLayout, myInfo.mChannelLayoutSize), "set channel layout on queue");
// prime the queue with some data before starting
myInfo.mDone = false;
myInfo.mCurrentPacket = 0;
for (int i = 0; i < kNumberBuffers; ++i) {
XThrowIfError(AudioQueueAllocateBuffer(myInfo.mQueue, bufferByteSize, &myInfo.mBuffers[i]), "AudioQueueAllocateBuffer failed");
AQTestBufferCallback (&myInfo, myInfo.mQueue, myInfo.mBuffers[i]);
if (myInfo.mDone) break;
}
// set the volume of the queue
XThrowIfError (AudioQueueSetParameter(myInfo.mQueue, kAudioQueueParam_Volume, volume), "set queue volume");
XThrowIfError (AudioQueueAddPropertyListener (myInfo.mQueue, kAudioQueueProperty_IsRunning, MyAudioQueuePropertyListenerProc, NULL), "add listener");
#if !TARGET_OS_IPHONE
if (rate > 0) {
UInt32 propValue = 1;
XThrowIfError (AudioQueueSetProperty (myInfo.mQueue, kAudioQueueProperty_EnableTimePitch, &propValue, sizeof(propValue)), "enable time pitch");
propValue = rQuality ? kAudioQueueTimePitchAlgorithm_Spectral : kAudioQueueTimePitchAlgorithm_TimeDomain;
XThrowIfError (AudioQueueSetProperty (myInfo.mQueue, kAudioQueueProperty_TimePitchAlgorithm, &propValue, sizeof(propValue)), "time pitch algorithm");
propValue = (rate == 1.0f ? 1 : 0); // bypass rate if 1.0
XThrowIfError (AudioQueueSetProperty (myInfo.mQueue, kAudioQueueProperty_TimePitchBypass, &propValue, sizeof(propValue)), "bypass time pitch");
if (rate != 1) {
XThrowIfError (AudioQueueSetParameter (myInfo.mQueue, kAudioQueueParam_PlayRate, rate), "set playback rate");
}
if (doPrint) {
printf ("Enable rate-scaled playback (rate = %.2f) using %s algorithm\n", rate, (rQuality ? "Spectral": "Time Domain"));
}
}
#endif
// lets start playing now - stop is called in the AQTestBufferCallback when there's
// no more to read from the file
XThrowIfError(AudioQueueStart(myInfo.mQueue, NULL), "AudioQueueStart failed");
do {
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.25, false);
currentTime += .25;
if (duration > 0 && currentTime >= duration)
break;
} while (gIsRunning);
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 1, false);
XThrowIfError(AudioQueueDispose(myInfo.mQueue, true), "AudioQueueDispose(true) failed");
XThrowIfError(AudioFileClose(myInfo.mAudioFile), "AudioQueueDispose(false) failed");
}
catch (CAXException e) {
char buf[256];
fprintf(stderr, "Error: %s (%s)\n", e.mOperation, e.FormatError(buf));
}
catch (...) {
fprintf(stderr, "Unspecified exception\n");
}
return 0;
}
