public unsafe IXAudio2SourceVoice CreateSourceVoice(
WaveFormat sourceFormat,
VoiceFlags flags = VoiceFlags.None,
float maxFrequencyRatio = 1.0f,
bool enableCallbackEvents = false,
EffectDescriptor[]?effectDescriptors = null)
{
IntPtr waveformatPtr = WaveFormat.MarshalToPtr(sourceFormat);
IXAudio2SourceVoice.VoiceCallbackImpl?callback = enableCallbackEvents ? new IXAudio2SourceVoice.VoiceCallbackImpl() : default;
try
{
if (effectDescriptors != null)
{
var effectChain = new EffectChain();
var effectDescriptorNatives = new EffectDescriptor.__Native[effectDescriptors.Length];
for (int i = 0; i < effectDescriptorNatives.Length; i++)
{
effectDescriptors[i].__MarshalTo(ref effectDescriptorNatives[i]);
}
effectChain.EffectCount = effectDescriptorNatives.Length;
fixed(void *pEffectDescriptors = &effectDescriptorNatives[0])
{
effectChain.EffectDescriptorPointer = (IntPtr)pEffectDescriptors;
IXAudio2SourceVoice voice = CreateSourceVoice(waveformatPtr, flags, maxFrequencyRatio, callback, null, effectChain);
if (callback != null)
{
callback.Voice = voice;
}
voice._callback = callback;
return(voice);
}
}
else
{
IXAudio2SourceVoice voice = CreateSourceVoice(waveformatPtr, flags, maxFrequencyRatio, callback, null, null);
if (callback != null)
{
callback.Voice = voice;
}
voice._callback = callback;
return(voice);
}
}
finally
{
Marshal.FreeHGlobal(waveformatPtr);
}
}
private void SetupVoice(AudioFormat format)
{
WaveFormat wFmt = new WaveFormat(format.SampleRate, format.BitsPerSample, format.Channels);
SourceVoice = _engine.Device.CreateSourceVoice(wFmt);
if (_submixer != null)
{
var vsDesc = new VoiceSendDescriptor();
vsDesc.OutputVoice = _submixer.SubMixerVoice;
SourceVoice.SetOutputVoices(new VoiceSendDescriptor[] { vsDesc });
}
SourceVoice.SetVolume(_volume);
}
public XAudio2Player(IXAudio2SourceVoice source)
{
_source = source;
}
