private void PlatformSubmitBuffer(byte[] buffer, int offset, int count)
{
// Get a buffer
OALSoundBuffer oalBuffer = new OALSoundBuffer();
// Bind the data
if (offset == 0)
{
oalBuffer.BindDataBuffer(buffer, _format, count, _sampleRate);
}
else
{
// BindDataBuffer does not support offset
var offsetBuffer = new byte[count];
Array.Copy(buffer, offset, offsetBuffer, 0, count);
oalBuffer.BindDataBuffer(offsetBuffer, _format, count, _sampleRate);
}
// Queue the buffer
AL.SourceQueueBuffer(SourceId, oalBuffer.OpenALDataBuffer);
ALHelper.CheckError();
_queuedBuffers.Enqueue(oalBuffer);
// If the source has run out of buffers, restart it
var sourceState = AL.GetSourceState(SourceId);
if (_state == SoundState.Playing && sourceState == ALSourceState.Stopped)
{
AL.SourcePlay(SourceId);
ALHelper.CheckError("Failed to resume source playback.");
}
}
private void PlatformInitialize(byte[] buffer, int sampleRate, AudioChannels channels)
{
Rate = (float)sampleRate;
Size = (int)buffer.Length;
#if OPENAL && !(MONOMAC || IOS)
_data = buffer;
Format = (channels == AudioChannels.Stereo) ? ALFormat.Stereo16 : ALFormat.Mono16;
#endif
#if MONOMAC || IOS
//buffer should contain 16-bit PCM wave data
short bitsPerSample = 16;
if ((int)channels <= 1)
{
Format = bitsPerSample == 8 ? ALFormat.Mono8 : ALFormat.Mono16;
}
else
{
Format = bitsPerSample == 8 ? ALFormat.Stereo8 : ALFormat.Stereo16;
}
_name = "";
_data = buffer;
#endif
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(_data, Format, Size, (int)Rate);
}
private void InitializeSound()
{
controller = OpenALSoundController.GetInstance;
soundBuffer = new OALSoundBuffer();
soundBuffer.BindDataBuffer(soundEffect._data, soundEffect.Format, soundEffect.Size, (int)soundEffect.Rate);
soundBuffer.Reserved += HandleSoundBufferReserved;
soundBuffer.Recycled += HandleSoundBufferRecycled;
}
private void InitializeSound ()
{
controller = OpenALSoundController.GetInstance;
soundBuffer = new OALSoundBuffer ();
soundBuffer.BindDataBuffer (soundEffect._data, soundEffect.Format, soundEffect.Size, (int)soundEffect.Rate);
soundBuffer.Reserved += HandleSoundBufferReserved;
soundBuffer.Recycled += HandleSoundBufferRecycled;
}
private void PlatformInitializePcm(byte[] buffer, int offset, int count, int sampleRate, AudioChannels channels, int loopStart, int loopLength)
{
Rate = (float)sampleRate;
Size = (int)count;
Format = channels == AudioChannels.Stereo ? ALFormat.Stereo16 : ALFormat.Mono16;
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, Format, Size, (int)Rate);
}
private void PlatformInitializeAdpcm(byte [] buffer, int offset, int count, int sampleRate, AudioChannels channels, int dataFormat, int loopStart, int loopLength)
{
Rate = (float)sampleRate;
Size = (int)count;
#if DESKTOPGL
Format = channels == AudioChannels.Stereo ? ALFormat.StereoMSADPCM : ALFormat.MonoMSADPCM;
#else
Format = channels == AudioChannels.Stereo ? (ALFormat)0x1303 : (ALFormat)0x1302;
#endif
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, Format, Size, (int)Rate, dataFormat);
}
private void PlatformInitializeIeeeFloat(byte[] buffer, int offset, int count, int sampleRate, AudioChannels channels, int loopStart, int loopLength)
{
if (!OpenALSoundController.GetInstance.SupportsIeee)
{
// If 32-bit IEEE float is not supported, convert to 16-bit signed PCM
buffer = AudioLoader.ConvertFloatTo16(buffer, offset, count);
PlatformInitializePcm(buffer, 0, buffer.Length, 16, sampleRate, channels, loopStart, loopLength);
return;
}
var format = AudioLoader.GetSoundFormat(AudioLoader.FormatIeee, (int)channels, 32);
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, format, count, sampleRate);
}
private void PlatformInitializePcm(byte[] buffer, int offset, int count, int sampleBits, int sampleRate, AudioChannels channels, int loopStart, int loopLength)
{
if (sampleBits == 24)
{
// Convert 24-bit signed PCM to 16-bit signed PCM
buffer = AudioLoader.Convert24To16(buffer, offset, count);
offset = 0;
count = buffer.Length;
sampleBits = 16;
}
var format = AudioLoader.GetSoundFormat(AudioLoader.FormatPcm, (int)channels, sampleBits);
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, format, count, sampleRate);
}
private void PlatformInitializeIma4(byte[] buffer, int offset, int count, int sampleRate, AudioChannels channels, int blockAlignment, int loopStart, int loopLength)
{
if (!OpenALSoundController.GetInstance.SupportsIma4)
{
// If IMA/ADPCM is not supported, convert to 16-bit signed PCM
buffer = AudioLoader.ConvertIma4ToPcm(buffer, offset, count, (int)channels, blockAlignment);
PlatformInitializePcm(buffer, 0, buffer.Length, 16, sampleRate, channels, loopStart, loopLength);
return;
}
var format = AudioLoader.GetSoundFormat(AudioLoader.FormatIma4, (int)channels, 0);
int sampleAlignment = AudioLoader.SampleAlignment(format, blockAlignment);
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, format, count, sampleRate, sampleAlignment);
}
private void PlatformInitializeAdpcm(byte[] buffer, int offset, int count, int sampleRate, AudioChannels channels, int blockAlignment, int loopStart, int loopLength)
{
if (!OpenALSoundController.GetInstance.SupportsAdpcm)
{
// If MS-ADPCM is not supported, convert to 16-bit signed PCM
buffer = AudioLoader.ConvertMsAdpcmToPcm(buffer, offset, count, (int)channels, blockAlignment);
PlatformInitializePcm(buffer, 0, buffer.Length, 16, sampleRate, channels, loopStart, loopLength);
return;
}
var format = AudioLoader.GetSoundFormat(AudioLoader.FormatMsAdpcm, (int)channels, 0);
int sampleAlignment = AudioLoader.SampleAlignment(format, blockAlignment);
// bind buffer
SoundBuffer = new OALSoundBuffer();
// Buffer length must be aligned with the block alignment
int alignedCount = count - (count % blockAlignment);
SoundBuffer.BindDataBuffer(buffer, format, alignedCount, sampleRate, sampleAlignment);
}
protected void BindDataBuffer(byte[] data, ALFormat format, int size, int rate)
{
soundBuffer.BindDataBuffer(data, format, size, rate);
}
private void PlatformLoadAudioStream(Stream s, out TimeSpan duration)
{
byte[] buffer;
#if OPENAL && !(MONOMAC || IOS)
ALFormat format;
int size;
int freq;
var stream = s;
buffer = AudioLoader.Load(stream, out format, out size, out freq);
Format = format;
Size = size;
Rate = freq;
duration = TimeSpan.FromSeconds((float)size / freq);
#endif
#if MONOMAC || IOS
var audiodata = new byte[s.Length];
s.Read(audiodata, 0, (int)s.Length);
using (AudioFileStream afs = new AudioFileStream(AudioFileType.WAVE))
{
afs.ParseBytes(audiodata, false);
Size = (int)afs.DataByteCount;
buffer = new byte[afs.DataByteCount];
Array.Copy(audiodata, afs.DataOffset, buffer, 0, afs.DataByteCount);
AudioStreamBasicDescription asbd = afs.DataFormat;
int channelsPerFrame = asbd.ChannelsPerFrame;
int bitsPerChannel = asbd.BitsPerChannel;
// There is a random chance that properties asbd.ChannelsPerFrame and asbd.BitsPerChannel are invalid because of a bug in Xamarin.iOS
// See: https://bugzilla.xamarin.com/show_bug.cgi?id=11074 (Failed to get buffer attributes error when playing sounds)
if (channelsPerFrame <= 0 || bitsPerChannel <= 0)
{
NSError err;
using (NSData nsData = NSData.FromArray(audiodata))
using (AVAudioPlayer player = AVAudioPlayer.FromData(nsData, out err))
{
channelsPerFrame = (int)player.NumberOfChannels;
bitsPerChannel = player.SoundSetting.LinearPcmBitDepth.GetValueOrDefault(16);
Rate = (float)player.SoundSetting.SampleRate;
duration = TimeSpan.FromSeconds(player.Duration);
}
}
else
{
Rate = (float)asbd.SampleRate;
double durationSec = (Size / ((bitsPerChannel / 8) * channelsPerFrame)) / asbd.SampleRate;
duration = TimeSpan.FromSeconds(durationSec);
}
if (channelsPerFrame == 1)
{
Format = (bitsPerChannel == 8) ? ALFormat.Mono8 : ALFormat.Mono16;
}
else
{
Format = (bitsPerChannel == 8) ? ALFormat.Stereo8 : ALFormat.Stereo16;
}
}
#endif
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, Format, Size, (int)Rate);
}
private void PlatformLoadAudioStream(Stream s, out TimeSpan duration)
{
byte[] buffer;
#if OPENAL && !(MONOMAC || IOS)
ALFormat format;
int size;
int freq;
var stream = s;
buffer = AudioLoader.Load(stream, out format, out size, out freq);
Format = format;
Size = size;
Rate = freq;
var bytesPerSecond = freq;
if (format == ALFormat.Mono16 || format == ALFormat.Stereo8)
{
bytesPerSecond *= 2;
}
else if (format == ALFormat.Stereo16)
{
bytesPerSecond *= 4;
}
duration = TimeSpan.FromSeconds((float)size / bytesPerSecond);
#endif
#if MONOMAC || IOS
var audiodata = new byte[s.Length];
s.Read(audiodata, 0, (int)s.Length);
using (AudioFileStream afs = new AudioFileStream(AudioFileType.WAVE))
{
afs.ParseBytes(audiodata, false);
Size = (int)afs.DataByteCount;
buffer = new byte[afs.DataByteCount];
Array.Copy(audiodata, afs.DataOffset, buffer, 0, afs.DataByteCount);
AudioStreamBasicDescription asbd = afs.DataFormat;
int channelsPerFrame = asbd.ChannelsPerFrame;
int bitsPerChannel = asbd.BitsPerChannel;
Rate = (float)asbd.SampleRate;
double durationSec = (Size / ((bitsPerChannel / 8) * channelsPerFrame)) / asbd.SampleRate;
duration = TimeSpan.FromSeconds(durationSec);
if (channelsPerFrame == 1)
{
Format = (bitsPerChannel == 8) ? ALFormat.Mono8 : ALFormat.Mono16;
}
else
{
Format = (bitsPerChannel == 8) ? ALFormat.Stereo8 : ALFormat.Stereo16;
}
}
#endif
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(buffer, Format, Size, (int)Rate);
}
private void PlatformInitialize(byte[] buffer, int sampleRate, AudioChannels channels)
{
Rate = (float)sampleRate;
Size = (int)buffer.Length;
#if OPENAL && !(MONOMAC || IOS)
_data = buffer;
Format = (channels == AudioChannels.Stereo) ? ALFormat.Stereo16 : ALFormat.Mono16;
#endif
#if MONOMAC || IOS
//buffer should contain 16-bit PCM wave data
short bitsPerSample = 16;
if ((int)channels <= 1)
Format = bitsPerSample == 8 ? ALFormat.Mono8 : ALFormat.Mono16;
else
Format = bitsPerSample == 8 ? ALFormat.Stereo8 : ALFormat.Stereo16;
_name = "";
_data = buffer;
#endif
// bind buffer
SoundBuffer = new OALSoundBuffer();
SoundBuffer.BindDataBuffer(_data, Format, Size, (int)Rate);
}