private void PrepareVoiceSource(WaveFormat format)
{
if (_voice == null)
{
_linkedWaveFormat = format;
//Voice Creation
_voice = new SourceVoice(_soundEngine.Xaudio2, _linkedWaveFormat, true);
//Do we have a special channel sound Mapping for this channel/speaker configuration ?
float[] customMapping;
if (_soundEngine.GetCustomChannelMapping(_voice.VoiceDetails.InputChannelCount, _soundEngine.DeviceDetail.OutputFormat.Channels, out customMapping))
{
_defaultChannelMapping = customMapping;
_voice.SetOutputMatrix(_voice.VoiceDetails.InputChannelCount, _soundEngine.DeviceDetail.OutputFormat.Channels, _defaultChannelMapping);
}
else
{
//Get default channel mapping
_defaultChannelMapping = new float[_voice.VoiceDetails.InputChannelCount * _soundEngine.DeviceDetail.OutputFormat.Channels];
_voice.GetOutputMatrix(null, _voice.VoiceDetails.InputChannelCount, _soundEngine.DeviceDetail.OutputFormat.Channels, _defaultChannelMapping);
}
_voice.BufferEnd += _callback;
}
else
{
if (_linkedWaveFormat.SampleRate != format.SampleRate)
{
_voice.SourceSampleRate = format.SampleRate;
_linkedWaveFormat = format;
}
}
}
