public void DoTests()
{
Config();
StringBuilder sb = null;
short iLen = 0;
m_pProp.GetConnectionName(sb, ref iLen);
sb = new StringBuilder(iLen);
m_pProp.GetConnectionName(sb, ref iLen);
Debug.Assert(sb.ToString() == "0");
sb = null;
iLen = 0;
m_pProp.GetStreamGroupName(sb, ref iLen);
sb = new StringBuilder(iLen);
m_pProp.GetStreamGroupName(sb, ref iLen);
}
private void GetAudioOutput()
{
int cOutputs = 0;
short i;
IWMOutputMediaProps pProps = null;
AMMediaType pMediaType = null;
int cbType = 0;
//
// Sanity check
//
if (IsDisposed())
{
throw new COMException("Instance has been Disposed", E_Unexpected);
}
//
// Find out the output count
//
m_pReader.GetOutputCount(out cOutputs);
//
// Find one audio output.
// Note: This sample only shows how to handle one audio output.
// If there is more than one audio output, the first one will be picked.
//
StringBuilder sName = null;
for (i = 0; i < cOutputs; i++)
{
m_pReader.GetOutputProps(i, out pProps);
try
{
//
// Find out the space needed for pMediaType
//
cbType = 0;
pMediaType = null;
pProps.GetMediaType(pMediaType, ref cbType);
// Get the name of the output we'll be using
sName = null;
short iName = 0;
pProps.GetConnectionName(sName, ref iName);
sName = new StringBuilder(iName);
pProps.GetConnectionName(sName, ref iName);
pMediaType = new AMMediaType();
pMediaType.formatSize = cbType - Marshal.SizeOf(typeof(AMMediaType));
//
// Get the value for MediaType
//
pProps.GetMediaType(pMediaType, ref cbType);
try
{
if (MediaType.Audio == pMediaType.majorType)
{
m_pWfx = new WaveFormatEx();
Marshal.PtrToStructure(pMediaType.formatPtr, m_pWfx);
break;
}
}
finally
{
WMUtils.FreeWMMediaType(pMediaType);
}
}
finally
{
Marshal.ReleaseComObject(pProps);
}
}
if (i == cOutputs)
{
throw new COMException("Could not find an audio stream in the specified file", E_Unexpected);
}
m_dwAudioOutputNum = i;
// Only deliver samples for the single output
SetStreams(sName.ToString());
}
