void TestGetRepresentation()
{
IntPtr ip = IntPtr.Zero;
MFVideoFormat vf = new MFVideoFormat();
AMMediaType a = new AMMediaType();
try
{
int hr = m_mt.GetRepresentation(MFRepresentation.MFVideoFormat, out ip);
MFError.ThrowExceptionForHR(hr);
Marshal.PtrToStructure(ip, a);
if (a.formatType == MFRepresentation.MFVideoFormat)
{
Marshal.PtrToStructure(a.formatPtr, vf);
}
hr = m_mt.FreeRepresentation(MFRepresentation.MFVideoFormat, ip);
MFError.ThrowExceptionForHR(hr);
}
catch { } // fails because it's not fully formed. Tested in player.cs
}
private void TestVF()
{
int hr;
IMFVideoMediaType vmt;
MFMediaEqual me;
int i;
MFVideoFormat vf;
IMFMediaType mt, mt2, mt3;
FourCC cc4 = new FourCC("YUY2");
hr = MFExtern.MFCreateMediaType(out mt);
MFError.ThrowExceptionForHR(hr);
hr = mt.SetGUID(MFAttributesClsid.MF_MT_SUBTYPE, cc4.ToMediaSubtype());
MFError.ThrowExceptionForHR(hr);
hr = mt.SetGUID(MFAttributesClsid.MF_MT_MAJOR_TYPE, MFMediaType.Video);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFCreateMFVideoFormatFromMFMediaType(mt, out vf, out i);
MFError.ThrowExceptionForHR(hr);
int cc = MFExtern.MFGetUncompressedVideoFormat(vf);
hr = MFExtern.MFCreateMediaType(out mt2);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFInitMediaTypeFromMFVideoFormat(mt2, vf, i);
MFError.ThrowExceptionForHR(hr);
int iRet = mt.IsEqual(mt2, out me);
Debug.Assert(iRet == 0);
AMMediaType amt = new AMMediaType();
hr = MFExtern.MFInitAMMediaTypeFromMFMediaType(mt, Guid.Empty, amt);
MFError.ThrowExceptionForHR(hr);
AMMediaType amt2;
hr = MFExtern.MFCreateAMMediaTypeFromMFMediaType(mt, MFRepresentation.VideoInfo2, out amt2);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFCreateMediaType(out mt3);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFInitMediaTypeFromAMMediaType(mt3, amt2);
MFError.ThrowExceptionForHR(hr);
iRet = mt.IsEqual(mt3, out me);
Debug.Assert(iRet == 0);
hr = MFExtern.MFCreateVideoMediaType(vf, out vmt);
VideoInfoHeader vih = new VideoInfoHeader();
Marshal.PtrToStructure(amt.formatPtr, vih);
IMFMediaType mt4;
hr = MFExtern.MFCreateMediaType(out mt4);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFInitMediaTypeFromVideoInfoHeader(mt4, vih, amt.formatSize, Guid.Empty);
MFError.ThrowExceptionForHR(hr);
iRet = mt.IsEqual(mt4, out me);
Debug.Assert(iRet == 1 && me == (MediaFoundation.MFMediaEqual.MajorTypes | MediaFoundation.MFMediaEqual.FormatUserData));
VideoInfoHeader2 vih2 = new VideoInfoHeader2();
Marshal.PtrToStructure(amt2.formatPtr, vih2);
IMFMediaType mt5;
hr = MFExtern.MFCreateMediaType(out mt5);
MFError.ThrowExceptionForHR(hr);
hr = MFExtern.MFInitMediaTypeFromVideoInfoHeader2(mt5, vih2, amt2.formatSize, Guid.Empty);
MFError.ThrowExceptionForHR(hr);
iRet = mt.IsEqual(mt5, out me);
Debug.Assert(iRet == 1 && me == (MediaFoundation.MFMediaEqual.MajorTypes | MediaFoundation.MFMediaEqual.FormatUserData));
IntPtr ip;
hr = vmt.SetGUID(MFAttributesClsid.MF_MT_SUBTYPE, cc4.ToMediaSubtype());
MFError.ThrowExceptionForHR(hr);
hr = vmt.SetGUID(MFAttributesClsid.MF_MT_MAJOR_TYPE, MFMediaType.Video);
MFError.ThrowExceptionForHR(hr);
vf = vmt.GetVideoFormat();
// This statement seems to cause crashes in 64bit code. The crash comes on leaving DoTests.
// Since this doesn't occur in 32 bit, and since this is a deprecated method, I don't think
// I care.
vmt.GetVideoRepresentation(MFRepresentation.VideoInfo, out ip, 10);
AMMediaType amt5 = new AMMediaType();
Marshal.PtrToStructure(ip, amt5);
Debug.Assert(amt5.formatType == MFRepresentation.VideoInfo);
hr = vmt.FreeRepresentation(MFRepresentation.VideoInfo, ip);
MFError.ThrowExceptionForHR(hr);
}