public static AudioQueueStatus CheckError(AudioQueueStatus status)
{
if (status != AudioQueueStatus.Ok)
{
ReportError(status);
}
return(status);
}
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
// create a new window instance based on the screen size
Window = new UIWindow(UIScreen.MainScreen.Bounds);
UIViewController controller = new UIViewController();
controller.View.BackgroundColor = UIColor.DarkGray;
controller.Title = "Xamarin iOS Debugger";
UINavigationController navController = new UINavigationController(controller);
Window.RootViewController = navController;
// make the window visible
Window.MakeKeyAndVisible();
//var documents = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
//var filename = Path.Combine(documents, "Write.txt");
//File.WriteAllText(filename, "Write this text into a file!");
OutputAudioQueue audioQueue = new OutputAudioQueue(new AudioStreamBasicDescription()
{
Format = AudioFormatType.MPEG4AAC_HE,
BytesPerPacket = 0,
BitsPerChannel = 0,
Reserved = 0,
FormatFlags = 0,
BytesPerFrame = 0, //Set this field to 0 for compressed formats.
SampleRate = 16000,
ChannelsPerFrame = 1,
FramesPerPacket = 1024 //for AAC.
});
const int BufferCountMax = 1000;
const int AudioBufferSize = 1024 * 8;
for (int i = 0; i < BufferCountMax; i++)
{
AudioQueueStatus aqs = audioQueue.AllocateBufferWithPacketDescriptors(
AudioBufferSize,
1,
out IntPtr ipBuffer
);
if (aqs == AudioQueueStatus.Ok)
{
//_queueAudioOutputBuffers.Enqueue(ipBuffer);
//_qFreeAudioOutputBuffers.Enqueue(ipBuffer);
byte[] abData = new byte[512];
Marshal.Copy(abData, 0, ipBuffer, abData.Length);
}
else
{
Debug.WriteLine("AudioQueueStatus: " + aqs);
}
}
return(true);
}
void Restart()
{
Debug.WriteLine("InternalSoundEffectInstance.Restart()");
AudioQueueStatus status = queue.Start();
Debug.WriteLine("queue status == " + status.ToString());
if (status == (AudioQueueStatus)1752656245) // 'hwiu' - hardware in use
{
Debug.WriteLine("(hardware in use)");
SoundEffectThread.Enqueue(new SoundEffectInstance.WorkItem(this, DoRetryRestart));
}
}
private void CheckAudioQueueStatus(AudioQueueStatus?audioQueueStatus, AudioPlayerState audioPlayerState)
{
if (audioQueueStatus is AudioQueueStatus audioStatus)
{
if (audioStatus != _audioQueueStatus)
{
_audioQueueStatus = audioStatus;
}
if (_audioQueueStatus == AudioQueueStatus.Ok)
{
SetAudioPlayerStatus(audioPlayerState);
}
}
}
// THIS HAPPENS ON ANOTHER THREAD
unsafe bool HandleOutputBuffer(AudioQueueBuffer *buffer, bool priming)
{
uint numBytesReadFromFile;
uint numPackets;
if (!ReadFileIntoBuffer(buffer, out numBytesReadFromFile, out numPackets))
{
return(false); // ERROR
}
if (loop && numPackets == 0)
{
currentPacket = 0; // Restart from beginning
if (!ReadFileIntoBuffer(buffer, out numBytesReadFromFile, out numPackets))
{
return(false); // ERROR
}
}
if (numPackets > 0) // have we recieved data?
{
buffer->AudioDataByteSize = numBytesReadFromFile;
AudioQueueStatus status = AudioQueueEnqueueBuffer(queue.Handle,
new IntPtr(buffer), (packetDescriptionArray != IntPtr.Zero ? numPackets : 0),
packetDescriptionArray);
currentPacket += numPackets;
}
else
{
if (!priming) // Stop the queue (if priming - queue isn't running anyway)
{
queue.Stop(false);
}
return(false); // No audio remains
}
return(true); // More audio available
}
internal AudioQueueException(AudioQueueStatus k) : base(Lookup((int)k))
{
ErrorCode = k;
}
