/// <summary>
/// Set the media type based on values from BASS.DLL
/// </summary>
/// <param name="psc">The IGenericSampleConfig onto which we set the mediatype</param>
override public void SetMediaType(IGenericSampleConfig psc)
{
int lFrequency = 0;
int lVolume = 0;
int lPan = 0;
WaveFormatEx w = new WaveFormatEx();
BASS_CHANNELINFO lInfo = new BASS_CHANNELINFO();
Bass.BASS_ChannelGetInfo(m_fChan, lInfo);
if ((lInfo.flags & (int)BASSStream.BASS_SAMPLE_8BITS) == (int)BASSStream.BASS_SAMPLE_8BITS)
{
w.wBitsPerSample = 8;
}
else
{
w.wBitsPerSample = 16;
}
Bass.BASS_ChannelGetAttributes(m_fChan, ref lFrequency, ref lVolume, ref lPan);
w.cbSize = (short)Marshal.SizeOf(typeof(WaveFormatEx));
w.nChannels = (short)lInfo.chans;
w.nSamplesPerSec = lFrequency;
w.wFormatTag = 1;
w.nAvgBytesPerSec = w.nSamplesPerSec * w.nBlockAlign;
m_BytesPerSample = (short)(w.nChannels * (w.wBitsPerSample / 8));
m_Frequency = lFrequency;
m_Channels = lInfo.chans;
w.nBlockAlign = (short)m_BytesPerSample;
w.nAvgBytesPerSec = w.nSamplesPerSec * w.nBlockAlign;
AMMediaType amt = new AMMediaType();
amt.majorType = MediaType.Audio;
amt.subType = MediaSubType.PCM;
amt.formatType = FormatType.WaveEx;
amt.formatPtr = Marshal.AllocCoTaskMem(w.cbSize);
amt.formatSize = w.cbSize;
Marshal.StructureToPtr(w, amt.formatPtr, false);
int hr = psc.SetMediaTypeEx(amt, BUFSIZE);
DsError.ThrowExceptionForHR(hr);
DsUtils.FreeAMMediaType(amt);
}