void Audio_Queue::setCookiesForStream(AudioFileStreamID inAudioFileStream)
{
OSStatus err;
// get the cookie size
UInt32 cookieSize;
Boolean writable;
err = AudioFileStreamGetPropertyInfo(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, &writable);
if (err) {
AQ_TRACE("error in info kAudioFileStreamProperty_MagicCookieData\n");
return;
}
AQ_TRACE("cookieSize %lu\n", cookieSize);
// get the cookie data
void* cookieData = calloc(1, cookieSize);
err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, cookieData);
if (err) {
AQ_TRACE("error in get kAudioFileStreamProperty_MagicCookieData");
free(cookieData);
return;
}
// set the cookie on the queue.
err = AudioQueueSetProperty(m_outAQ, kAudioQueueProperty_MagicCookie, cookieData, cookieSize);
free(cookieData);
if (err) {
AQ_TRACE("error in set kAudioQueueProperty_MagicCookie");
}
}
int32_t setup_queue(
ALACMagicCookie cookie,
PlayerInfo *playerInfo,
uint32_t buffer_size,
uint32_t num_buffers,
uint32_t num_packets
) {
// Create Audio Queue for ALAC
AudioStreamBasicDescription inFormat = {0};
inFormat.mSampleRate = ntohl(cookie.sampleRate);
inFormat.mFormatID = kAudioFormatAppleLossless;
inFormat.mFormatFlags = 0; // ALAC uses no flags
inFormat.mBytesPerPacket = 0; // Variable size (must use AudioStreamPacketDescription)
inFormat.mFramesPerPacket = ntohl(cookie.frameLength);
inFormat.mBytesPerFrame = 0; // Compressed
inFormat.mChannelsPerFrame = 2; // Stero TODO: get from fmtp?
inFormat.mBitsPerChannel = 0; // Compressed
inFormat.mReserved = 0;
OSStatus err = AudioQueueNewOutput(
&inFormat,
c_callback,
playerInfo, // User data
NULL, // Run on audio queue's thread
NULL, // Callback run loop's mode
0, // Reserved
&playerInfo->queue);
if (err) return err;
// Need to set the magic cookie too (tail fmtp)
err = AudioQueueSetProperty(playerInfo->queue, kAudioQueueProperty_MagicCookie,
&cookie, sizeof(ALACMagicCookie));
if (err) return err;
// Create input buffers, and enqueue using callback
for (int i = 0; i < num_buffers; i++) {
AudioQueueBufferRef buffer;
err = AudioQueueAllocateBufferWithPacketDescriptions(
playerInfo->queue, buffer_size, num_packets, &buffer);
if (err) return err;
c_callback(playerInfo, playerInfo->queue, buffer);
}
// Volume full
err = AudioQueueSetParameter(playerInfo->queue, kAudioQueueParam_Volume, 1.0);
if (err) return err;
// Prime
err = AudioQueuePrime(playerInfo->queue, 0, NULL);
if (err) return err;
// Start
err = AudioQueueStart(playerInfo->queue, NULL);
if (err) return err;
return 0;
}
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 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;
}
}
}
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;
}
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();
}
// many encoded formats require a 'magic cookie'. if the file has a cookie we get it
// and configure the queue with it
static void MyCopyEncoderCookieToQueue(AudioFileID theFile, AudioQueueRef queue ) {
UInt32 propertySize;
OSStatus result = AudioFileGetPropertyInfo (theFile, kAudioFilePropertyMagicCookieData, &propertySize, NULL);
if (result == noErr && propertySize > 0)
{
Byte* magicCookie = (UInt8*)malloc(sizeof(UInt8) * propertySize);
CheckError(AudioFileGetProperty (theFile, kAudioFilePropertyMagicCookieData, &propertySize, magicCookie), "get cookie from file failed");
CheckError(AudioQueueSetProperty(queue, kAudioQueueProperty_MagicCookie, magicCookie, propertySize), "set cookie on queue failed");
free(magicCookie);
}
}
AudioQueueLevelMeterState Audio_Queue::levels()
{
if (!m_levelMeteringEnabled) {
UInt32 enabledLevelMeter = true;
AudioQueueSetProperty(m_outAQ,
kAudioQueueProperty_EnableLevelMetering,
&enabledLevelMeter,
sizeof(UInt32));
m_levelMeteringEnabled = true;
}
AudioQueueLevelMeterState levelMeter;
UInt32 levelMeterSize = sizeof(AudioQueueLevelMeterState);
AudioQueueGetProperty(m_outAQ, kAudioQueueProperty_CurrentLevelMeterDB, &levelMeter, &levelMeterSize);
return levelMeter;
}
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);
}
void Audio_Queue::setPlayRate(float playRate)
{
if (!m_outAQ) {
return;
}
UInt32 enableTimePitchConversion = (playRate != 1.0);
if (playRate < 0.5) {
playRate = 0.5;
}
if (playRate > 2.0) {
playRate = 2.0;
}
AudioQueueSetProperty (m_outAQ, kAudioQueueProperty_EnableTimePitch, &enableTimePitchConversion, sizeof(enableTimePitchConversion));
AudioQueueSetParameter(m_outAQ, kAudioQueueParam_PlayRate, playRate);
}
void DZAudioQueuePlayer::onProperty(AudioFileStreamPropertyID pID)
{
UInt32 propertySize = 0;
switch (pID) {
// Create audio queue with given data format.
case kAudioFileStreamProperty_DataFormat:
propertySize = sizeof(this->_format);
if (dzDebugOK(AudioFileStreamGetProperty(this->_parser, pID, &(propertySize), &(this->_format)), "Fail to get audio file stream property: DataFormat.")) {
if (this->_queue != NULL) {
dzDebug(!noErr, "Audio file stream duplicated data format.");
} else {
if (dzDebugError(AudioQueueNewOutput(&(this->_format), QueueCallback, this, CFRunLoopGetCurrent(), kCFRunLoopCommonModes, 0, &(this->_queue)), "Create new output audio queue failed.")) {
this->_queue = NULL;
}
}
}
break;
// Extract magic cookie data.
case kAudioFileStreamProperty_MagicCookieData:
if (noErr == AudioFileStreamGetPropertyInfo(this->_parser, pID, &(propertySize), NULL)) {
this->_magicCookie = malloc(propertySize);
this->_magicCookieSize = propertySize;
if (this->_magicCookie != NULL && dzDebugError(AudioFileStreamGetProperty(this->_parser, pID, &(propertySize), this->_magicCookie), "Fail to get audio file stream property: MagicCookieData.")) {
free(this->_magicCookie);
this->_magicCookie = NULL;
this->_magicCookieSize = 0;
}
}
break;
// Set magic cookie data if any. (Queue shall be already created.)
case kAudioFileStreamProperty_ReadyToProducePackets:
if (this->_queue != NULL && this->_magicCookie != NULL) {
dzDebug(AudioQueueSetProperty(this->_queue, kAudioQueueProperty_MagicCookie, this->_magicCookie, this->_magicCookieSize), "Fail to set audio queue property: MagicCookie.");
}
if (this->_queue != NULL && this->_parser != NULL) {
this->_status = DZAudioQueuePlayerStatus_ReadyToStart;
}
break;
default:
break;
}
}
static OSStatus AttachNewCookie(AudioQueueRef inQueue, BackgroundTrackMgr::BG_FileInfo *inFileInfo)
{
OSStatus result = noErr;
UInt32 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 cookie data", end);
result = AudioQueueSetProperty(inQueue, kAudioQueueProperty_MagicCookie, cookie, size);
delete [] cookie;
AssertNoError("Error setting cookie data for queue", end);
}
return noErr;
end:
return noErr;
}
bool load(CFURLRef url) {
OSStatus status;
memset(&aqData,0,sizeof(aqData));
timeBase = 0;
status = AudioFileOpenURL(url,kAudioFileReadPermission,0,&aqData.mAudioFile);
checkStatus(status);
if( status != noErr ) return false;
UInt32 dataFormatSize = sizeof (aqData.mDataFormat); // 1
status = AudioFileGetProperty ( // 2
aqData.mAudioFile, // 3
kAudioFilePropertyDataFormat, // 4
&dataFormatSize, // 5
&aqData.mDataFormat // 6
);
checkStatus(status);
status = AudioQueueNewOutput ( // 1
&aqData.mDataFormat, // 2
HandleOutputBuffer, // 3
&aqData, // 4
CFRunLoopGetCurrent (), // 5
kCFRunLoopCommonModes, // 6
0, // 7
&aqData.mQueue // 8
);
checkStatus(status);
UInt32 maxPacketSize;
UInt32 propertySize = sizeof (maxPacketSize);
status = AudioFileGetProperty ( // 1
aqData.mAudioFile, // 2
kAudioFilePropertyPacketSizeUpperBound, // 3
&propertySize, // 4
&maxPacketSize // 5
);
checkStatus(status);
deriveBufferSize ( // 6
aqData.mDataFormat, // 7
maxPacketSize, // 8
0.5, // 9
&aqData.bufferByteSize, // 10
&aqData.mNumPacketsToRead // 11
);
bool isFormatVBR = ( // 1
aqData.mDataFormat.mBytesPerPacket == 0 ||
aqData.mDataFormat.mFramesPerPacket == 0
);
if (isFormatVBR) { // 2
aqData.mPacketDescs =
(AudioStreamPacketDescription*) malloc (
aqData.mNumPacketsToRead * sizeof (AudioStreamPacketDescription)
);
} else { // 3
aqData.mPacketDescs = NULL;
}
UInt32 cookieSize = sizeof (UInt32); // 1
OSStatus couldNotGetProperty = // 2
AudioFileGetPropertyInfo ( // 3
aqData.mAudioFile, // 4
kAudioFilePropertyMagicCookieData, // 5
&cookieSize, // 6
NULL // 7
);
// checkStatus(couldNotGetProperty);
if (!couldNotGetProperty && cookieSize) { // 8
char* magicCookie =
(char *) malloc (cookieSize);
status = AudioFileGetProperty ( // 9
aqData.mAudioFile, // 10
kAudioFilePropertyMagicCookieData, // 11
&cookieSize, // 12
magicCookie // 13
);
checkStatus(status);
status = AudioQueueSetProperty ( // 14
aqData.mQueue, // 15
kAudioQueueProperty_MagicCookie, // 16
magicCookie, // 17
cookieSize // 18
);
checkStatus(status);
free (magicCookie); // 19
}
return true;
}
bool AudioQueueStreamOut::Open(const char *FileName)
{
delete [] mInfo.mPacketDescs;
mInfo.mPacketDescs = NULL;
m_totalFrames = 0;
mInfo.m_SeekToPacket = -1;
try {
CFURLRef sndFile = CFURLCreateFromFileSystemRepresentation (NULL, (const UInt8 *)FileName, strlen(FileName), false);
if (!sndFile) return false;
OSStatus result = AudioFileOpenURL (sndFile, 0x1/*fsRdPerm*/, 0/*inFileTypeHint*/, &mInfo.mAudioFile);
CFRelease (sndFile);
UInt32 size = sizeof(mInfo.mDataFormat);
XThrowIfError(AudioFileGetProperty(mInfo.mAudioFile,
kAudioFilePropertyDataFormat, &size, &mInfo.mDataFormat), "couldn't get file's data format");
printf ("File format: "); mInfo.mDataFormat.Print();
XThrowIfError(AudioQueueNewOutput(&mInfo.mDataFormat, AudioQueueStreamOut::AQBufferCallback, this,
NULL, kCFRunLoopCommonModes, 0, &mInfo.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 = (mInfo.mDataFormat.mBytesPerPacket == 0 || mInfo.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(mInfo.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 (mInfo.mDataFormat, maxPacketSize, 0.5/*seconds*/, &bufferByteSize, &mInfo.mNumPacketsToRead);
if (isFormatVBR)
mInfo.mPacketDescs = new AudioStreamPacketDescription [mInfo.mNumPacketsToRead];
else
mInfo.mPacketDescs = NULL; // we don't provide packet descriptions for constant bit rate formats (like linear PCM)
printf ("Buffer Byte Size: %d, Num Packets to Read: %d\n", (int)bufferByteSize, (int)mInfo.mNumPacketsToRead);
}
// (2) If the file has a cookie, we should get it and set it on the AQ
size = sizeof(UInt32);
result = AudioFileGetPropertyInfo (mInfo.mAudioFile, kAudioFilePropertyMagicCookieData, &size, NULL);
if (!result && size) {
char* cookie = new char [size];
XThrowIfError (AudioFileGetProperty (mInfo.mAudioFile, kAudioFilePropertyMagicCookieData, &size, cookie), "get cookie from file");
XThrowIfError (AudioQueueSetProperty(mInfo.mQueue, kAudioQueueProperty_MagicCookie, cookie, size), "set cookie on queue");
delete [] cookie;
}
// prime the queue with some data before starting
mInfo.mDone = false;
mInfo.mCurrentPacket = 0;
for (UInt32 i = 0; i < sizeof(mInfo.mBuffers)/sizeof(mInfo.mBuffers[0]); ++i) {
XThrowIfError(AudioQueueAllocateBuffer(mInfo.mQueue, bufferByteSize, &mInfo.mBuffers[i]), "AudioQueueAllocateBuffer failed");
AQBufferCallback (this, mInfo.mQueue, mInfo.mBuffers[i]);
if (mInfo.mDone) break;
}
return IMUSIKStreamOutDefault::Create(NULL);
}
catch (CAXException e) {
char buf[256];
fprintf(stderr, "Error: %s (%s)\n", e.mOperation, e.FormatError(buf));
}
return false;
}
OSStatus
darwin_configure_input_audio_queue (
cahal_device* in_device,
cahal_recorder_info* in_callback_info,
AudioStreamBasicDescription* io_asbd,
AudioQueueRef* out_audio_queue
)
{
OSStatus result = noErr;
if( NULL != io_asbd )
{
result =
AudioQueueNewInput (
io_asbd,
darwin_recorder_callback,
in_callback_info,
NULL,
kCFRunLoopCommonModes,
0,
out_audio_queue
);
if( noErr == result )
{
if( NULL != in_device->device_uid )
{
CFStringRef device_uid =
CFStringCreateWithCString (
NULL,
in_device->device_uid,
kCFStringEncodingASCII
);
CPC_LOG (
CPC_LOG_LEVEL_TRACE,
"Setting queue device to %s.",
in_device->device_uid
);
result =
AudioQueueSetProperty (
*out_audio_queue,
kAudioQueueProperty_CurrentDevice,
&device_uid,
sizeof( device_uid )
);
if( NULL != device_uid )
{
CFRelease( device_uid );
}
}
if( result )
{
CPC_ERROR (
"Error setting current device (0x%x) to %s: 0x%x",
kAudioQueueProperty_CurrentDevice,
in_device->device_uid,
result
);
CPC_PRINT_CODE( CPC_LOG_LEVEL_ERROR, result );
}
else
{
UINT32 property_size = sizeof( AudioStreamBasicDescription );
result =
AudioQueueGetProperty (
*out_audio_queue,
kAudioQueueProperty_StreamDescription,
io_asbd,
&property_size
);
if( result )
{
CPC_ERROR(
"Error accessing property 0x%x on AudioQueue: %d",
kAudioConverterCurrentInputStreamDescription,
result
);
CPC_PRINT_CODE( CPC_LOG_LEVEL_ERROR, result );
}
}
}
else
{
CPC_ERROR (
"Error creating AudioQueue: 0x%x.",
result
);
CPC_PRINT_CODE( CPC_LOG_LEVEL_ERROR, result );
}
}
else
{
CPC_LOG_STRING (
CPC_LOG_LEVEL_ERROR,
"Invalid basic stream description"
);
}
return( result );
}
OSStatus
darwin_configure_output_audio_queue (
cahal_device* in_device,
cahal_playback_info* in_callback_info,
FLOAT32 in_volume,
AudioStreamBasicDescription* in_asbd,
AudioQueueRef* out_audio_queue
)
{
OSStatus result = noErr;
if( NULL != in_asbd )
{
result =
AudioQueueNewOutput (
in_asbd,
darwin_playback_callback,
in_callback_info,
NULL,
kCFRunLoopCommonModes,
0,
out_audio_queue
);
if( noErr == result )
{
if( NULL != in_device->device_uid )
{
CFStringRef device_uid =
CFStringCreateWithCString (
NULL,
in_device->device_uid,
kCFStringEncodingASCII
);
CPC_LOG (
CPC_LOG_LEVEL_TRACE,
"Setting queue device to %s.",
in_device->device_uid
);
result =
AudioQueueSetProperty (
*out_audio_queue,
kAudioQueueProperty_CurrentDevice,
&device_uid,
sizeof( device_uid )
);
if( noErr == result )
{
result =
AudioQueueSetParameter (
*out_audio_queue,
kAudioQueueParam_Volume,
in_volume
);
}
if( NULL != device_uid )
{
CFRelease( device_uid );
}
}
if( result )
{
CPC_ERROR (
"Error setting current device (0x%x) to %s: 0x%x",
kAudioQueueProperty_CurrentDevice,
in_device->device_uid,
result
);
CPC_PRINT_CODE( CPC_LOG_LEVEL_ERROR, result );
}
}
else
{
CPC_ERROR (
"Error creating AudioQueue: 0x%x.",
result
);
CPC_PRINT_CODE( CPC_LOG_LEVEL_ERROR, result );
}
}
else
{
CPC_LOG_STRING (
CPC_LOG_LEVEL_ERROR,
"Invalid basic stream description"
);
}
return( result );
}
static void aq_start_r(MSFilter * f)
{
AQData *d = (AQData *) f->data;
if (d->read_started == FALSE) {
OSStatus aqresult;
d->readAudioFormat.mSampleRate = d->rate;
d->readAudioFormat.mFormatID = kAudioFormatLinearPCM;
d->readAudioFormat.mFormatFlags =
kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
d->readAudioFormat.mFramesPerPacket = 1;
d->readAudioFormat.mChannelsPerFrame = 1;
d->readAudioFormat.mBitsPerChannel = d->bits;
d->readAudioFormat.mBytesPerPacket = d->bits / 8;
d->readAudioFormat.mBytesPerFrame = d->bits / 8;
//show_format("input device", &d->devicereadFormat);
//show_format("data from input filter", &d->readAudioFormat);
memcpy(&d->devicereadFormat, &d->readAudioFormat,
sizeof(d->readAudioFormat));
d->readBufferByteSize =
kSecondsPerBuffer * d->devicereadFormat.mSampleRate *
(d->devicereadFormat.mBitsPerChannel / 8) *
d->devicereadFormat.mChannelsPerFrame;
#if 0
aqresult = AudioConverterNew(&d->devicereadFormat,
&d->readAudioFormat,
&d->readAudioConverter);
if (aqresult != noErr) {
ms_error("d->readAudioConverter = %d", aqresult);
d->readAudioConverter = NULL;
}
#endif
aqresult = AudioQueueNewInput(&d->devicereadFormat, readCallback, d, // userData
NULL, // run loop
NULL, // run loop mode
0, // flags
&d->readQueue);
if (aqresult != noErr) {
ms_error("AudioQueueNewInput = %d", aqresult);
}
if (d->uidname!=NULL){
char uidname[256];
CFStringGetCString(d->uidname, uidname, 256,
CFStringGetSystemEncoding());
ms_message("AQ: using uidname:%s", uidname);
aqresult =
AudioQueueSetProperty(d->readQueue,
kAudioQueueProperty_CurrentDevice,
&d->uidname, sizeof(CFStringRef));
if (aqresult != noErr) {
ms_error
("AudioQueueSetProperty on kAudioQueueProperty_CurrentDevice %d",
aqresult);
}
}
setupRead(f);
aqresult = AudioQueueStart(d->readQueue, NULL); // start time. NULL means ASAP.
if (aqresult != noErr) {
ms_error("AudioQueueStart -read- %d", aqresult);
}
d->read_started = TRUE;
}
}
bool UBAudioQueueRecorder::init(const QString& waveInDeviceName)
{
if(mIsRecording)
{
setLastErrorMessage("Already recording ...");
return false;
}
OSStatus err = AudioQueueNewInput (&sAudioFormat, UBAudioQueueRecorder::audioQueueInputCallback,
this, 0, 0, 0, &mQueue);
if (err)
{
setLastErrorMessage(QString("Cannot acquire audio input %1").arg(err));
mQueue = 0;
close();
return false;
}
//qDebug() << "init with waveInDeviceName ..." << waveInDeviceName;
if (waveInDeviceName.length() > 0 && waveInDeviceName != "Default")
{
AudioDeviceID deviceID = deviceIDFromDeviceName(waveInDeviceName);
if (deviceID)
{
QString deviceUID = deviceUIDFromDeviceID(deviceID);
if (deviceUID.length() > 0)
{
CFStringRef sr = CFStringCreateWithCString(0, deviceUID.toUtf8().constData(), kCFStringEncodingUTF8);
err = AudioQueueSetProperty(mQueue, kAudioQueueProperty_CurrentDevice, &sr, sizeof(CFStringRef));
if (err)
{
setLastErrorMessage(QString("Cannot set audio input %1 (%2)").arg(waveInDeviceName).arg(err));
}
else
{
qDebug() << "recording with input" << waveInDeviceName;
}
}
else
{
setLastErrorMessage(QString("Cannot find audio input device UID with ID %1 (%2)").arg(deviceID).arg(err));
}
}
else
{
setLastErrorMessage(QString("Cannot find audio input with name %1 (%2)").arg(waveInDeviceName).arg(err));
}
}
UInt32 monitor = true;
err = AudioQueueSetProperty(mQueue, kAudioQueueProperty_EnableLevelMetering , &monitor, sizeof(UInt32));
if (err)
{
qWarning() << QString("Cannot set recording level monitoring %1").arg(err);
}
int nbBuffers = 6;
mSampleBufferSize = sAudioFormat.mSampleRate * sAudioFormat.mChannelsPerFrame
* 2 * mBufferLengthInMs / 1000; // 44.1 Khz * stereo * 16bit * buffer length
for (int i = 0; i < nbBuffers; i++)
{
AudioQueueBufferRef outBuffer;
err = AudioQueueAllocateBuffer(mQueue, mSampleBufferSize, &outBuffer);
if (err)
{
setLastErrorMessage(QString("Cannot allocate audio buffer %1").arg(err));
close();
return false;
}
mBuffers << outBuffer;
}
foreach(AudioQueueBufferRef buffer, mBuffers)
{
err = AudioQueueEnqueueBuffer(mQueue, buffer, 0, 0);
if (err)
{
setLastErrorMessage(QString("Cannot enqueue audio buffer %1").arg(err));
close();
return false;
}
}
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);
}
}
static void aq_start_w(MSFilter * f)
{
AQData *d = (AQData *) f->data;
if (d->write_started == FALSE) {
OSStatus aqresult;
d->writeAudioFormat.mSampleRate = d->rate;
d->writeAudioFormat.mFormatID = kAudioFormatLinearPCM;
d->writeAudioFormat.mFormatFlags =
kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
d->writeAudioFormat.mFramesPerPacket = 1;
d->writeAudioFormat.mChannelsPerFrame = 1;
d->writeAudioFormat.mBitsPerChannel = d->bits;
d->writeAudioFormat.mBytesPerPacket = d->bits / 8;
d->writeAudioFormat.mBytesPerFrame = d->bits / 8;
show_format("data provided to output filter", &d->writeAudioFormat);
show_format("output device", &d->devicewriteFormat);
memcpy(&d->devicewriteFormat, &d->writeAudioFormat,
sizeof(d->writeAudioFormat));
d->writeBufferByteSize =
kSecondsPerBuffer * d->devicewriteFormat.mSampleRate *
(d->devicewriteFormat.mBitsPerChannel / 8) *
d->devicewriteFormat.mChannelsPerFrame;
#if 0
aqresult = AudioConverterNew(&d->writeAudioFormat,
&d->devicewriteFormat,
&d->writeAudioConverter);
if (aqresult != noErr) {
ms_error("d->writeAudioConverter = %d", aqresult);
d->writeAudioConverter = NULL;
}
#endif
// create the playback audio queue object
aqresult = AudioQueueNewOutput(&d->devicewriteFormat, writeCallback, d, NULL, /*CFRunLoopGetCurrent () */
NULL, /*kCFRunLoopCommonModes */
0, // run loop flags
&d->writeQueue);
if (aqresult != noErr) {
ms_error("AudioQueueNewOutput = %d", aqresult);
}
AudioQueueSetParameter (d->writeQueue,
kAudioQueueParam_Volume,
gain_volume_out);
if (d->uidname!=NULL){
char uidname[256];
CFStringGetCString(d->uidname, uidname, 256,
CFStringGetSystemEncoding());
ms_message("AQ: using uidname:%s", uidname);
aqresult =
AudioQueueSetProperty(d->writeQueue,
kAudioQueueProperty_CurrentDevice,
&d->uidname, sizeof(CFStringRef));
if (aqresult != noErr) {
ms_error
("AudioQueueSetProperty on kAudioQueueProperty_CurrentDevice %d",
aqresult);
}
}
setupWrite(f);
d->curWriteBuffer = 0;
}
}
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;
}
void playFile(const char* filePath) {
CFURLRef audioFileURL = CFURLCreateFromFileSystemRepresentation(NULL,
(UInt8*) filePath,
strlen (filePath),
false);
OSStatus result = AudioFileOpenURL(audioFileURL,
fsRdPerm,
0,
&aqData.mAudioFile);
CFRelease (audioFileURL);
UInt32 dataFormatSize = sizeof (aqData.mDataFormat);
AudioFileGetProperty(aqData.mAudioFile,
kAudioFilePropertyDataFormat,
&dataFormatSize,
&aqData.mDataFormat);
AudioQueueNewOutput(&aqData.mDataFormat,
HandleOutputBuffer,
&aqData,
CFRunLoopGetCurrent(),
kCFRunLoopCommonModes,
0,
&aqData.mQueue);
UInt32 maxPacketSize;
UInt32 propertySize = sizeof (maxPacketSize);
AudioFileGetProperty(aqData.mAudioFile,
kAudioFilePropertyPacketSizeUpperBound,
&propertySize,
&maxPacketSize);
DeriveBufferSize(&aqData.mDataFormat,
maxPacketSize,
0.5,
&aqData.bufferByteSize,
&aqData.mNumPacketsToRead);
bool isFormatVBR = (aqData.mDataFormat.mBytesPerPacket == 0 ||
aqData.mDataFormat.mFramesPerPacket == 0);
if (isFormatVBR) {
// LOG("%s\n","VBR");
aqData.mPacketDescs =
(AudioStreamPacketDescription*)
malloc (aqData.mNumPacketsToRead * sizeof (AudioStreamPacketDescription));
} else {
aqData.mPacketDescs = NULL;
}
UInt32 cookieSize = sizeof (UInt32);
bool couldNotGetProperty =
AudioFileGetPropertyInfo (aqData.mAudioFile,
kAudioFilePropertyMagicCookieData,
&cookieSize,
NULL);
if (!couldNotGetProperty && cookieSize) {
char* magicCookie = (char *) malloc (cookieSize);
AudioFileGetProperty (aqData.mAudioFile,
kAudioFilePropertyMagicCookieData,
&cookieSize,
magicCookie);
AudioQueueSetProperty (aqData.mQueue,
kAudioQueueProperty_MagicCookie,
magicCookie,
cookieSize);
free (magicCookie);
}
aqData.mCurrentPacket = 0;
aqData.mIsRunning = true;
//LOG("%d\n", aqData.mNumPacketsToRead);
for (int i = 0; i < kNumberBuffers; ++i) {
AudioQueueAllocateBuffer (aqData.mQueue,
aqData.bufferByteSize,
&aqData.mBuffers[i]);
HandleOutputBuffer (&aqData,
aqData.mQueue,
aqData.mBuffers[i]);
}
Float32 gain = 1.0;
// Optionally, allow user to override gain setting here
AudioQueueSetParameter (aqData.mQueue,
kAudioQueueParam_Volume,
gain);
//LOG("%s\n","Starting play");
// IMPORTANT NOTE : This value must be set
// Before the call to HandleOutputBuffer
//a qData.mIsRunning = true;
AudioQueueStart (aqData.mQueue,
NULL);
}
void DoAQOfflineRender(CFURLRef sourceURL, CFURLRef destinationURL)
{
// main audio queue code
try {
AQTestInfo myInfo;
myInfo.mDone = false;
myInfo.mFlushed = false;
myInfo.mCurrentPacket = 0;
// get the source file
XThrowIfError(AudioFileOpenURL(sourceURL, 0x01/*fsRdPerm*/, 0/*inFileTypeHint*/, &myInfo.mAudioFile), "AudioFileOpen failed");
UInt32 size = sizeof(myInfo.mDataFormat);
XThrowIfError(AudioFileGetProperty(myInfo.mAudioFile, kAudioFilePropertyDataFormat, &size, &myInfo.mDataFormat), "couldn't get file's data format");
printf ("File format: "); myInfo.mDataFormat.Print();
// create a new audio queue output
XThrowIfError(AudioQueueNewOutput(&myInfo.mDataFormat, // The data format of the audio to play. For linear PCM, only interleaved formats are supported.
AQTestBufferCallback, // A callback function to use with the playback audio queue.
&myInfo, // A custom data structure for use with the callback function.
CFRunLoopGetCurrent(), // The event loop on which the callback function pointed to by the inCallbackProc parameter is to be called.
// If you specify NULL, the callback is invoked on one of the audio queue’s internal threads.
kCFRunLoopCommonModes, // The run loop mode in which to invoke the callback function specified in the inCallbackProc parameter.
0, // Reserved for future use. Must be 0.
&myInfo.mQueue), // On output, the newly created playback audio queue object.
"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 second of audio based on this format
CalculateBytesForTime(myInfo.mDataFormat, maxPacketSize, 1.0/*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)
}
printf ("Buffer Byte Size: %d, Num Packets to Read: %d\n", (int)bufferByteSize, (int)myInfo.mNumPacketsToRead);
}
// if the file has a magic cookie, we should get it and set it on the AQ
size = sizeof(UInt32);
OSStatus 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;
}
// channel layout?
OSStatus err = AudioFileGetPropertyInfo(myInfo.mAudioFile, kAudioFilePropertyChannelLayout, &size, NULL);
AudioChannelLayout *acl = NULL;
if (err == noErr && size > 0) {
acl = (AudioChannelLayout *)malloc(size);
XThrowIfError(AudioFileGetProperty(myInfo.mAudioFile, kAudioFilePropertyChannelLayout, &size, acl), "get audio file's channel layout");
XThrowIfError(AudioQueueSetProperty(myInfo.mQueue, kAudioQueueProperty_ChannelLayout, acl, size), "set channel layout on queue");
}
//allocate the input read buffer
XThrowIfError(AudioQueueAllocateBuffer(myInfo.mQueue, bufferByteSize, &myInfo.mBuffer), "AudioQueueAllocateBuffer");
// prepare a canonical interleaved capture format
CAStreamBasicDescription captureFormat;
captureFormat.mSampleRate = myInfo.mDataFormat.mSampleRate;
captureFormat.SetAUCanonical(myInfo.mDataFormat.mChannelsPerFrame, true); // interleaved
XThrowIfError(AudioQueueSetOfflineRenderFormat(myInfo.mQueue, &captureFormat, acl), "set offline render format");
ExtAudioFileRef captureFile;
// prepare a 16-bit int file format, sample channel count and sample rate
CAStreamBasicDescription dstFormat;
dstFormat.mSampleRate = myInfo.mDataFormat.mSampleRate;
dstFormat.mChannelsPerFrame = myInfo.mDataFormat.mChannelsPerFrame;
dstFormat.mFormatID = kAudioFormatLinearPCM;
dstFormat.mFormatFlags = kLinearPCMFormatFlagIsPacked | kLinearPCMFormatFlagIsSignedInteger; // little-endian
dstFormat.mBitsPerChannel = 16;
dstFormat.mBytesPerPacket = dstFormat.mBytesPerFrame = 2 * dstFormat.mChannelsPerFrame;
dstFormat.mFramesPerPacket = 1;
// create the capture file
XThrowIfError(ExtAudioFileCreateWithURL(destinationURL, kAudioFileCAFType, &dstFormat, acl, kAudioFileFlags_EraseFile, &captureFile), "ExtAudioFileCreateWithURL");
// set the capture file's client format to be the canonical format from the queue
XThrowIfError(ExtAudioFileSetProperty(captureFile, kExtAudioFileProperty_ClientDataFormat, sizeof(AudioStreamBasicDescription), &captureFormat), "set ExtAudioFile client format");
// allocate the capture buffer, just keep it at half the size of the enqueue buffer
// we don't ever want to pull any faster than we can push data in for render
// this 2:1 ratio keeps the AQ Offline Render happy
const UInt32 captureBufferByteSize = bufferByteSize / 2;
AudioQueueBufferRef captureBuffer;
AudioBufferList captureABL;
XThrowIfError(AudioQueueAllocateBuffer(myInfo.mQueue, captureBufferByteSize, &captureBuffer), "AudioQueueAllocateBuffer");
captureABL.mNumberBuffers = 1;
captureABL.mBuffers[0].mData = captureBuffer->mAudioData;
captureABL.mBuffers[0].mNumberChannels = captureFormat.mChannelsPerFrame;
// 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");
AudioTimeStamp ts;
ts.mFlags = kAudioTimeStampSampleTimeValid;
ts.mSampleTime = 0;
// we need to call this once asking for 0 frames
XThrowIfError(AudioQueueOfflineRender(myInfo.mQueue, &ts, captureBuffer, 0), "AudioQueueOfflineRender");
// we need to enqueue a buffer after the queue has started
AQTestBufferCallback(&myInfo, myInfo.mQueue, myInfo.mBuffer);
while (true) {
UInt32 reqFrames = captureBufferByteSize / captureFormat.mBytesPerFrame;
XThrowIfError(AudioQueueOfflineRender(myInfo.mQueue, &ts, captureBuffer, reqFrames), "AudioQueueOfflineRender");
captureABL.mBuffers[0].mData = captureBuffer->mAudioData;
captureABL.mBuffers[0].mDataByteSize = captureBuffer->mAudioDataByteSize;
UInt32 writeFrames = captureABL.mBuffers[0].mDataByteSize / captureFormat.mBytesPerFrame;
printf("t = %.f: AudioQueueOfflineRender: req %d fr/%d bytes, got %ld fr/%d bytes\n", ts.mSampleTime, (int)reqFrames, (int)captureBufferByteSize, writeFrames, (int)captureABL.mBuffers[0].mDataByteSize);
XThrowIfError(ExtAudioFileWrite(captureFile, writeFrames, &captureABL), "ExtAudioFileWrite");
if (myInfo.mFlushed) break;
ts.mSampleTime += writeFrames;
}
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 1, false);
XThrowIfError(AudioQueueDispose(myInfo.mQueue, true), "AudioQueueDispose(true) failed");
XThrowIfError(AudioFileClose(myInfo.mAudioFile), "AudioQueueDispose(false) failed");
XThrowIfError(ExtAudioFileDispose(captureFile), "ExtAudioFileDispose failed");
if (myInfo.mPacketDescs) delete [] myInfo.mPacketDescs;
if (acl) free(acl);
}
catch (CAXException e) {
char buf[256];
fprintf(stderr, "Error: %s (%s)\n", e.mOperation, e.FormatError(buf));
}
return;
}
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 (configuration->enableTimeAndPitchConversion) {
UInt32 enableTimePitchConversion = 1;
err = AudioQueueSetProperty (m_outAQ, kAudioQueueProperty_EnableTimePitch, &enableTimePitchConversion, sizeof(enableTimePitchConversion));
if (err != noErr) {
AQ_TRACE("Failed to enable time and pitch conversion. Play rate setting will fail\n");
}
}
if (m_initialOutputVolume != 1.0) {
setVolume(m_initialOutputVolume);
}
}
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;
}
}
}
