static unsafe void PropertyChangeInternal(void *pUserData, AudioQueue *pQueue, AudioQueueProperty id)
{
AudioStream *pThis = (AudioStream *)pUserData;
if (pThis == null)
{
Console.WriteLine("PropertyChangeProc: pThis is null");
}
if (pQueue == null)
{
Console.WriteLine("PropertyChangeProc: pQueue is null");
}
int size = sizeof(uint);
uint iIsRunning = 0;
OSStatus status = API.AudioQueueGetProperty(pQueue, AudioQueueProperty.IsRunning, &iIsRunning, &size);
API.CheckStatus(status);
bool isRunning = iIsRunning != 0;
if (status == 0)
{
if (pThis->IsRunning && !isRunning)
{
AudioStream.Stop(pThis);
}
}
}
static unsafe void ReadBufferProc(void *pUserData, AudioQueue *pQueue, AudioQueueBuffer *pBuffer)
{
lock (API.StopLock)
{
try
{
ReadBufferInternal(pUserData, pQueue, pBuffer);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
}
static unsafe void PropertyChangeProc(void *pUserData, AudioQueue *pQueue, AudioQueueProperty id)
{
lock (API.StopLock)
{
try
{
PropertyChangeInternal(pUserData, pQueue, id);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
}
static unsafe void ReadBufferInternal(void *pUserData, AudioQueue *pQueue, AudioQueueBuffer *pBuffer)
{
AudioStream *pThis = (AudioStream *)pUserData;
if (pThis == null)
{
Console.WriteLine("ReadBufferProc: pThis is null");
}
if (!pThis->IsRunning)
{
return;
}
if (pQueue == null)
{
Console.WriteLine("ReadBufferProc: pQueue is null");
}
if (pBuffer == null)
{
Console.WriteLine("ReadBufferProc: pBuffer is null");
}
if (pBuffer->AudioData == null)
{
Console.WriteLine("ReadBufferProc: pBuffer->AudioData is null");
}
if (pBuffer->PacketDescriptors == null)
{
Console.WriteLine("ReadBufferProc: pBuffer->PacketDescriptors is null");
}
if (pThis->AudioFile == null)
{
Console.WriteLine("ReadBufferProc: pThis->AudioFile is null");
}
int numPacketsReadFromFile = pThis->NumPacketsToRead;
int numBytesReadFromFile = 0;
OSStatus status = API.AudioFileReadPackets(pThis->AudioFile, 0, &numBytesReadFromFile, pBuffer->PacketDescriptors, pThis->CurrentPacket, &numPacketsReadFromFile, pBuffer->AudioData);
API.CheckStatus(status);
if (status == 0 &&
numPacketsReadFromFile == 0 &&
pThis->Looping)
{
// we ran out of packets and they are
// asking to loop, so try and reset
pThis->CurrentPacket = 0;
numPacketsReadFromFile = pThis->NumPacketsToRead;
numBytesReadFromFile = 0;
status = API.AudioFileReadPackets(pThis->AudioFile, 0, &numBytesReadFromFile, pBuffer->PacketDescriptors, pThis->CurrentPacket, &numPacketsReadFromFile, pBuffer->AudioData);
API.CheckStatus(status);
}
if (numPacketsReadFromFile > 0)
{
pBuffer->AudioDataByteSize = numBytesReadFromFile;
pBuffer->PacketDescriptorCount = numPacketsReadFromFile;
status = API.AudioQueueEnqueueBuffer(pThis->Queue, pBuffer, (pBuffer->PacketDescriptors != null ? pBuffer->PacketDescriptorCount : 0), pBuffer->PacketDescriptors);
API.CheckStatus(status);
pThis->CurrentPacket += numPacketsReadFromFile;
}
else
{
status = API.AudioQueueStop(pThis->Queue, 0);
API.CheckStatus(status);
}
}
public static extern unsafe OSStatus AudioQueueDispose(AudioQueue *pQueue, int immediate);
public static extern unsafe OSStatus AudioQueueFreeBuffer(AudioQueue *pQueue, AudioQueueBuffer *pBuffer);
public static extern unsafe OSStatus AudioQueueStart(AudioQueue *pQueue, AudioTimeStamp *startTime);
public static extern unsafe OSStatus AudioQueueSetProperty(AudioQueue *pQueue, AudioQueueProperty propertyId, void *pCookie, int cookieSize);
public static extern unsafe OSStatus AudioQueueAllocateBufferWithPacketDescriptions(AudioQueue *pQueue, int byteCount, int descriptorCount, AudioQueueBuffer **ppBuffer);
public static extern unsafe OSStatus AudioQueueSetParameter(AudioQueue *pQueue, AudioQueueParameter paramId, float paramVal);
public static extern unsafe OSStatus AudioQueueAllocateBuffer(AudioQueue *pQueue, int byteCount, AudioQueueBuffer **ppBuffer);
public static extern unsafe OSStatus AudioQueueGetProperty(AudioQueue *pQueue, AudioQueueProperty propertyId, void *pResult, int *dataSize);
public static extern unsafe OSStatus AudioQueueAddPropertyListener(AudioQueue *pQueue, AudioQueueProperty propertyId, AudioQueuePropertyChangeCallback callback, void *pUserData);
public static extern unsafe OSStatus AudioQueueStop(AudioQueue *pQueue, int immediate);
public static extern unsafe OSStatus AudioQueueEnqueueBuffer(AudioQueue *pQueue, AudioQueueBuffer *pBuffer, int numPacketDescs, AudioStreamPacketDescription *pDescriptors);
