public void Dispose()
{
if (m_Riff != null)
{
m_Riff.Dispose();
m_Riff = null;
}
if (m_pEventQueue != null)
{
Marshal.ReleaseComObject(m_pEventQueue);
m_pEventQueue = null;
}
if (m_pSource != null)
{
//m_pSource.Dispose(); Children don't dispose their parents...
m_pSource = null;
}
if (m_pStreamDescriptor != null)
{
Marshal.ReleaseComObject(m_pStreamDescriptor);
m_pStreamDescriptor = null;
}
if (m_Log != null)
{
m_Log.Dispose();
m_Log = null;
}
GC.SuppressFinalize(this);
}
public int BeginCreateObject(
IMFByteStream pByteStream,
string pwszURL,
MFResolution dwFlags,
IPropertyStore pProps, // Can be NULL.
out object ppIUnknownCancelCookie, // Can be NULL.
IMFAsyncCallback pCallback,
object punkState // Can be NULL
)
{
// Make sure we *never* leave this entry point with an exception
try
{
int hr;
m_Log.WriteLine("BeginCreateObject");
ppIUnknownCancelCookie = null; // We don't return a cancellation cookie.
if ((pByteStream == null) || (pwszURL == null) || (pCallback == null))
{
throw new COMException("bad stream, url, or callback", E_InvalidArgument);
}
IMFAsyncResult pResult = null;
WavSource pSource = new WavSource();
pSource.Open(pByteStream);
hr = MFExtern.MFCreateAsyncResult(pSource as IMFMediaSource, pCallback, punkState, out pResult);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFInvokeCallback(pResult);
MFError.ThrowExceptionForHR(hr);
if (pResult != null)
{
Marshal.ReleaseComObject(pResult);
}
return S_Ok;
}
catch (Exception e)
{
ppIUnknownCancelCookie = null;
return Marshal.GetHRForException(e);
}
}
long m_rtCurrentPosition; // Current position in the stream, in 100-ns units
#endregion Fields
#region Constructors
public WavStream(WavSource pSource, CWavRiffParser pRiff, IMFStreamDescriptor pSD)
{
int hr;
m_pEventQueue = null;
m_Log = new xLog("WavStream");
#if false
m_nRefCount(0),
m_IsShutdown(false),
m_rtCurrentPosition(0),
m_discontinuity(false),
m_EOS(false)
#endif
m_pSource = pSource;
m_pStreamDescriptor = pSD;
m_Riff = pRiff;
// Create the media event queue.
hr = MFExternAlt.MFCreateEventQueue(out m_pEventQueue);
MFError.ThrowExceptionForHR(hr);
}