private void InitVideo()
{
int hr;
IAMTimelineGroup pVideoGroup = (IAMTimelineGroup)m_pVideoGroupObj;
// all we set is the major type. The group will automatically use other defaults
AMMediaType VideoGroupType = new AMMediaType();
VideoGroupType.majorType = MediaType.Video;
hr = pVideoGroup.SetMediaType(VideoGroupType);
DESError.ThrowExceptionForHR(hr);
DsUtils.FreeAMMediaType(VideoGroupType);
// add the video group to the timeline
hr = m_pTimeline.AddGroup(m_pVideoGroupObj);
DESError.ThrowExceptionForHR(hr);
IAMTimelineObj pTrack1Obj;
hr = m_pTimeline.CreateEmptyNode(out pTrack1Obj, TimelineMajorType.Track);
DESError.ThrowExceptionForHR(hr);
// tell the composition about the track
IAMTimelineComp pRootComp = (IAMTimelineComp)m_pVideoGroupObj;
hr = pRootComp.VTrackInsBefore(pTrack1Obj, -1);
DESError.ThrowExceptionForHR(hr);
m_VideoTrack = (IAMTimelineTrack)pTrack1Obj;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="mType">Media type of the new group</param>
/// <param name="pTimeline">Timeline to use for the group</param>
/// <param name="fps">FPS for the group</param>
public MediaGroup(AMMediaType mType, IAMTimeline pTimeline, double fps)
{
int hr;
IAMTimelineObj pGroupObj;
m_Length = 0;
m_Files = new ArrayList();
m_FPS = fps;
m_pTimeline = pTimeline;
// make the root group/composition
hr = m_pTimeline.CreateEmptyNode(out pGroupObj, TimelineMajorType.Group);
DESError.ThrowExceptionForHR(hr);
try
{
m_pGroup = (IAMTimelineGroup)pGroupObj;
// Set the media type we just created
hr = m_pGroup.SetMediaType(mType);
DESError.ThrowExceptionForHR(hr);
DsUtils.FreeAMMediaType(mType);
// add the video group to the timeline
hr = m_pTimeline.AddGroup(pGroupObj);
DESError.ThrowExceptionForHR(hr);
}
finally
{
//Marshal.ReleaseComObject(pGroupObj);
}
//Marshal.ReleaseComObject(pTrack1Obj); // Released as m_VideoTrack in dispose
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="mType">Media type of the new group</param>
/// <param name="pTimeline">Timeline to use for the group</param>
/// <param name="fps">FPS for the group</param>
public MediaGroup(AMMediaType mType, IAMTimeline pTimeline, double fps)
{
int hr;
IAMTimelineObj pGroupObj;
m_Length = 0;
m_Files = new ArrayList();
m_FPS = fps;
m_pTimeline = pTimeline;
// make the root group/composition
hr = m_pTimeline.CreateEmptyNode(out pGroupObj, TimelineMajorType.Group);
DESError.ThrowExceptionForHR(hr);
try
{
m_pGroup = (IAMTimelineGroup)pGroupObj;
// Set the media type we just created
hr = m_pGroup.SetMediaType(mType);
DESError.ThrowExceptionForHR(hr);
DsUtils.FreeAMMediaType(mType);
// add the video group to the timeline
hr = m_pTimeline.AddGroup(pGroupObj);
DESError.ThrowExceptionForHR(hr);
}
finally
{
//Marshal.ReleaseComObject(pGroupObj);
}
//Marshal.ReleaseComObject(pTrack1Obj); // Released as m_VideoTrack in dispose
}
private void TestMediaType()
{
int hr;
AMMediaType p = new AMMediaType();
hr = m_itg.GetMediaType(p);
DESError.ThrowExceptionForHR(hr);
// From SetMediaTypeForVB
Debug.Assert(p.majorType == MediaType.Video, "mediatype1");
p.majorType = MediaType.Video;
hr = m_itg.SetMediaType(p);
DESError.ThrowExceptionForHR(hr);
}
/// <summary>
/// Inserts a group into a timeline, and assigns it the supplied media type.
/// Will free the media type upon completion.
/// </summary>
/// <param name="timeline"></param>
/// <param name="mediaType"></param>
/// <returns></returns>
internal static IAMTimelineGroup InsertGroup(IAMTimeline timeline, AMMediaType mediaType, string name)
{
try
{
int hr = 0;
IAMTimelineObj groupObj;
// make the root group/composition
hr = timeline.CreateEmptyNode(out groupObj, TimelineMajorType.Group);
DESError.ThrowExceptionForHR(hr);
if (!string.IsNullOrEmpty(name))
{
hr = groupObj.SetUserName(name);
DESError.ThrowExceptionForHR(hr);
}
IAMTimelineGroup group = (IAMTimelineGroup)groupObj;
// Set the media type we just created
hr = group.SetMediaType(mediaType);
DESError.ThrowExceptionForHR(hr);
// add the group to the timeline
hr = timeline.AddGroup(groupObj);
DESError.ThrowExceptionForHR(hr);
return(group);
}
finally
{
DsUtils.FreeAMMediaType(mediaType);
}
}