/// <summary>
/// COM entry point for IMediaObject.SetOutputType
/// </summary>
/// <remarks>
/// There should be no need to modify or override this method. It will call the
/// abstract and virtual methods to perform its work.
/// </remarks>
public int SetOutputType(int ulStreamIndex, AMMediaType pmt, DMOSetType dwFlags)
{
int hr = S_OK;
try
{
// Avoid multi-threaded access issues
lock(this)
{
m_Log.Write(string.Format("SetOutputType({0}, {1})", ulStreamIndex, dwFlags));
// Validate the stream number
if (ulStreamIndex >= m_NumOutputs || ulStreamIndex < 0)
{
return DMOResults.E_InvalidStreamIndex;
}
// Validate the flags
if ( (dwFlags & ~ (DMOSetType.Clear | DMOSetType.TestOnly)) > 0)
{
return E_INVALIDARG;
}
// If they requested to clear the current type
if ( (dwFlags & DMOSetType.Clear) > 0)
{
DsUtils.FreeAMMediaType(m_OutputInfo[ulStreamIndex].CurrentMediaType);
m_OutputInfo[ulStreamIndex].fTypeSet = false;
// Re-check to see if all the non-optional streams still have types
if (!CheckAllTypesSet())
{
// We aren't in a runnable state anymore, flush things
Flush();
FreeStreamingResources();
}
hr = S_OK;
}
else
{
if (null != pmt)
{
m_Log.WriteNoTS(string.Format(" requested out: {0}", DsToString.AMMediaTypeToString(pmt)));
// Check if the type is already set
if (!OutputTypeSet(ulStreamIndex))
{
// Check to see if we support the requested format
hr = InternalCheckOutputType(ulStreamIndex, pmt);
if (hr >= 0)
{
hr = S_OK;
// If we weren't just being tested, actually set the type
if ( (dwFlags & DMOSetType.TestOnly) == 0)
{
// Free any previous mediatype
if (OutputTypeSet(ulStreamIndex))
{
DsUtils.FreeAMMediaType(m_OutputInfo[ulStreamIndex].CurrentMediaType);
}
m_OutputInfo[ulStreamIndex].CurrentMediaType = MoCloneMediaType(pmt);
m_OutputInfo[ulStreamIndex].fTypeSet = true;
// Re-check to see if all the non-optional streams still have types
CheckAllTypesSet();
}
}
}
else
{
// Type is set, so reject any type that's not identical
if (!TypesMatch(pmt, OutputType(ulStreamIndex)))
{
hr = DMOResults.E_InvalidType;
}
else
{
hr = S_OK;
}
}
}
else
{
hr = E_POINTER;
}
}
m_Log.WriteNoTS(string.Format(":{0}\r\n", hr));
}
}
catch (Exception e)
{
// Generic handling of all exceptions. While .NET will turn exceptions into
// HRESULTS "automatically", I prefer to have some place I can set a breakpoint.
hr = CatFail(e);
}
return hr;
}
/// <summary>
/// COM entry point for IMediaObject.SetOutputType
/// </summary>
/// <param name="streamIndex">Zero-based index of an input stream on the DMO.</param>
/// <param name="pmt">Pointer to a <see cref="AMMediaType"/> structure that
/// specifies the media type.</param>
/// <param name="flags">Bitwise combination of zero or more flags
/// from the DMO_SET_TYPE_FLAGS enumeration.</param>
/// <returns>A HRESULT value.</returns>
/// <remarks>
/// There should be no need to modify or override this method. It will call the
/// abstract and virtual methods to perform its work.
/// </remarks>
public int SetOutputType(int streamIndex, AMMediaType pmt, DMOSetType flags)
{
int hr = SOK;
try
{
// Avoid multi-threaded access issues
lock (this)
{
// Validate the stream number
if (streamIndex >= this.numOutputs || streamIndex < 0)
{
return DMOResults.E_InvalidStreamIndex;
}
// Validate the flags
if ((flags & ~(DMOSetType.Clear | DMOSetType.TestOnly)) > 0)
{
return EINVALIDARG;
}
// If they requested to clear the current type
if ((flags & DMOSetType.Clear) > 0)
{
DsUtils.FreeAMMediaType(this.outputInfo[streamIndex].CurrentMediaType);
this.outputInfo[streamIndex].TypeSet = false;
// Re-check to see if all the non-optional streams still have types
if (!this.CheckAllTypesSet())
{
// We aren't in a runnable state anymore, flush things
this.Flush();
this.FreeStreamingResources();
}
hr = SOK;
}
else
{
if (null != pmt)
{
// Check if the type is already set
if (!this.OutputTypeSet(streamIndex))
{
// Check to see if we support the requested format
hr = this.InternalCheckOutputType(streamIndex, pmt);
if (hr >= 0)
{
hr = SOK;
// If we weren't just being tested, actually set the type
if ((flags & DMOSetType.TestOnly) == 0)
{
// Free any previous mediatype
if (this.OutputTypeSet(streamIndex))
{
DsUtils.FreeAMMediaType(this.outputInfo[streamIndex].CurrentMediaType);
}
this.outputInfo[streamIndex].CurrentMediaType = MoCloneMediaType(pmt);
this.outputInfo[streamIndex].TypeSet = true;
// Re-check to see if all the non-optional streams still have types
this.CheckAllTypesSet();
}
}
}
else
{
// Type is set, so reject any type that's not identical
if (!TypesMatch(pmt, this.OutputType(streamIndex)))
{
hr = DMOResults.E_InvalidType;
}
else
{
hr = SOK;
}
}
}
else
{
hr = EPOINTER;
}
}
}
}
catch (Exception e)
{
// Generic handling of all exceptions. While .NET will turn exceptions into
// HRESULTS "automatically", I prefer to have some place I can set a breakpoint.
hr = this.CatFail(e);
}
return hr;
}
