public static void CopySample(IMediaSample src, IMediaSample dest, bool copySamples)
{
var sourceSize = src.GetActualDataLength();
if (copySamples)
{
IntPtr sourceBuffer;
src.GetPointer(out sourceBuffer);
IntPtr destBuffer;
dest.GetPointer(out destBuffer);
CopyMemory(destBuffer, sourceBuffer, sourceSize);
}
// Copy the sample times
long start, end;
if (src.GetTime(out start, out end) == S_OK)
{
dest.SetTime(start, end);
}
if (src.GetMediaTime(out start, out end) == S_OK)
{
dest.SetMediaTime(start, end);
}
// Copy the media type
AMMediaType mediaType;
var changed = src.GetMediaType(out mediaType) == 0;
if (changed)
{
dest.SetMediaType(mediaType);
DsUtils.FreeAMMediaType(mediaType);
}
dest.SetSyncPoint(src.IsSyncPoint() == S_OK);
dest.SetPreroll(src.IsPreroll() == S_OK);
dest.SetDiscontinuity(src.IsDiscontinuity() == S_OK);
// Copy the actual data length
dest.SetActualDataLength(sourceSize);
}
public MediaSample(IMediaSample sample)
{
m_Size = sample.GetSize();
m_ActualDataLength = sample.GetActualDataLength();
m_IsSyncPoint = sample.IsSyncPoint() == 0;
m_IsPreroll = sample.IsPreroll() == 0;
m_IsDiscontinuity = sample.IsDiscontinuity() == 0;
m_HasTime = sample.GetTime(out m_TimeStart, out m_TimeEnd) == 0;
m_HasMediaTime = sample.GetMediaTime(out m_MediaTimeStart, out m_MediaTimeEnd) == 0;
m_Buffer = Marshal.AllocCoTaskMem(m_Size);
// Copy the media type
AMMediaType mediaType;
if (sample.GetMediaType(out mediaType) == 0)
{
m_MediaType = mediaType;
}
}
void TestMediaType()
{
int hr;
AMMediaType mt1 = new AMMediaType();
// Set the media type to the original value we
// got off the pin. If we don't do this, the GetMediatype
// will just return null, indicating that the mediatype
// hasn't changed.
hr = m_ims.SetMediaType(m_MediaType);
Marshal.ThrowExceptionForHR(hr);
// Re-read the value
hr = m_ims.GetMediaType(out mt1);
Marshal.ThrowExceptionForHR(hr);
// Check to see if it re-read correctly.
Debug.Assert(m_MediaType.majorType == mt1.majorType, "Major type");
Debug.Assert(m_MediaType.subType == mt1.subType, "Sub type");
DsUtils.FreeAMMediaType(mt1);
mt1 = null;
}
public static void CopySample(IMediaSample src, IMediaSample dest, bool copySamples)
{
var sourceSize = src.GetActualDataLength();
if (copySamples)
{
IntPtr sourceBuffer;
src.GetPointer(out sourceBuffer);
IntPtr destBuffer;
dest.GetPointer(out destBuffer);
CopyMemory(destBuffer, sourceBuffer, sourceSize);
}
// Copy the sample times
long start, end;
if (src.GetTime(out start, out end) == S_OK)
{
dest.SetTime(start, end);
}
if (src.GetMediaTime(out start, out end) == S_OK)
{
dest.SetMediaTime(start, end);
}
// Copy the media type
AMMediaType mediaType;
src.GetMediaType(out mediaType);
dest.SetMediaType(mediaType);
DsUtils.FreeAMMediaType(mediaType);
dest.SetSyncPoint(src.IsSyncPoint() == S_OK);
dest.SetPreroll(src.IsPreroll() == S_OK);
dest.SetDiscontinuity(src.IsDiscontinuity() == S_OK);
// Copy the actual data length
dest.SetActualDataLength(sourceSize);
}
