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 Recorder::start()
{
AudioQueueNewInput ( // 1
&aqData.mDataFormat, // 2
HandleInputBuffer, // 3
&aqData, // 4
NULL, // 5
kCFRunLoopCommonModes, // 6
0, // 7
&aqData.mQueue // 8
);
UInt32 dataFormatSize = sizeof (aqData.mDataFormat); // 1
AudioQueueGetProperty ( // 2
aqData.mQueue, // 3
kAudioConverterCurrentOutputStreamDescription, // 4
&aqData.mDataFormat, // 5
&dataFormatSize // 6
);
const char *filePath = "recording.wav";
audioFileURL =
CFURLCreateFromFileSystemRepresentation ( // 1
NULL, // 2
(const UInt8 *) filePath, // 3
strlen (filePath), // 4
false // 5
);
AudioFileCreateWithURL ( // 6
audioFileURL, // 7
fileType, // 8
&aqData.mDataFormat, // 9
kAudioFileFlags_EraseFile, // 10
&aqData.mAudioFile // 11
);
DeriveBufferSize ( // 1
aqData.mQueue, // 2
aqData.mDataFormat, // 3
0.5, // 4
&aqData.bufferByteSize // 5
);
for (int i = 0; i < kNumberBuffers; ++i) { // 1
AudioQueueAllocateBuffer ( // 2
aqData.mQueue, // 3
aqData.bufferByteSize, // 4
&aqData.mBuffers[i] // 5
);
AudioQueueEnqueueBuffer ( // 6
aqData.mQueue, // 7
aqData.mBuffers[i], // 8
0, // 9
NULL // 10
);
}
aqData.mCurrentPacket = 0; // 1
aqData.mIsRunning = true;
AudioQueueStart ( // 3
aqData.mQueue, // 4
NULL // 5
);
}
