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);
}
