public int AddClip(string path, out ClipEntry pClip)
{
int it = m_Clips.Count;
pClip = new ClipEntry();
m_Clips.Add(pClip);
int hr = pClip.Create(m_pController, path);
// if we expect both audio and video, then all clips
// must have both audio and video.
// If the first clip is video only, then switch
// to video-only automatically
if ((hr == VFW_E_UNSUPPORTED_AUDIO) && (m_Clips.Count == 1))
{
// new controller, different options (only one video stream)
if (m_pController != null)
{
Marshal.ReleaseComObject(m_pController);
m_pController = null;
}
m_pController = new GMFBridgeController() as IGMFBridgeController;
m_pController.SetNotify(m_hwndApp, m_msgSegment);
m_pController.AddStream(true, eFormatType.Uncompressed, false);
m_pController.SetBufferMinimum(200);
// try again
hr = pClip.Create(m_pController, path);
}
if (hr >= 0)
{
pClip.SetStartPosition(m_tDuration);
m_tDuration += pClip.Duration();
// if this is the first clip, create the render graph
if (m_Clips.Count == 1)
{
m_pRenderGraph = new FilterGraph() as IGraphBuilder;
hr = m_pController.CreateRenderGraph(pClip.SinkFilter(), m_pRenderGraph, out m_pRenderGraphSourceFilter);
if (hr >= 0 && m_hwndApp != IntPtr.Zero)
{
IMediaEventEx pME = m_pRenderGraph as IMediaEventEx;
if (pME != null)
{
pME.SetNotifyWindow(m_hwndApp, m_msgEvent, IntPtr.Zero);
}
}
}
}
else
{
pClip.Dispose();
m_Clips.RemoveAt(it);
}
return(hr);
}
public int SetClipLimits(ClipEntry pClip, long tStart, long tEnd)
{
long tDur = pClip.Duration();
int hr = pClip.SetLimits(tStart, tEnd);
if (hr < 0 || (tDur == pClip.Duration()))
{
return(hr);
}
// this is called from the same message loop as the end-of-segment processing, so it's safe to
// access the current segment
if (pClip == CurrentClip())
{
// send just the stop time to the graph
// in the hope that it is not too late
hr = pClip.SetStopTime();
}
// clip duration has changed: update start position of
// all subsequent clips (for current position slider UI)
m_tDuration = 0;
bool bFound = false;
foreach (ClipEntry pThis in m_Clips)
{
if (pThis == pClip)
{
bFound = true;
m_tDuration = pClip.GetStartPosition() + pClip.Duration();
}
else if (bFound)
{
// following clip: adjust
pClip.SetStartPosition(m_tDuration);
m_tDuration += pClip.Duration();
}
}
return(S_OK);
}
public int AddClip(string path, out ClipEntry pClip)
{
int it = m_Clips.Count;
pClip = new ClipEntry();
m_Clips.Add(pClip);
int hr = pClip.Create(m_pController, path);
// if we expect both audio and video, then all clips
// must have both audio and video.
// If the first clip is video only, then switch
// to video-only automatically
if ((hr == VFW_E_UNSUPPORTED_AUDIO) && (m_Clips.Count == 1))
{
// new controller, different options (only one video stream)
if (m_pController != null)
{
Marshal.ReleaseComObject(m_pController);
m_pController = null;
}
m_pController = new GMFBridgeController() as IGMFBridgeController;
m_pController.SetNotify(m_hwndApp, m_msgSegment);
m_pController.AddStream(true, eFormatType.Uncompressed, false);
m_pController.SetBufferMinimum(200);
// try again
hr = pClip.Create(m_pController, path);
}
if (hr >= 0)
{
pClip.SetStartPosition(m_tDuration);
m_tDuration += pClip.Duration();
// if this is the first clip, create the render graph
if (m_Clips.Count == 1)
{
m_pRenderGraph = new FilterGraph() as IGraphBuilder;
hr = m_pController.CreateRenderGraph(pClip.SinkFilter(), m_pRenderGraph, out m_pRenderGraphSourceFilter);
if (hr >= 0 && m_hwndApp != IntPtr.Zero)
{
IMediaEventEx pME = m_pRenderGraph as IMediaEventEx;
if (pME != null)
{
pME.SetNotifyWindow(m_hwndApp, m_msgEvent, IntPtr.Zero);
}
}
}
}
else
{
pClip.Dispose();
m_Clips.RemoveAt(it);
}
return hr;
}
public int SetClipLimits(ClipEntry pClip, long tStart, long tEnd)
{
long tDur = pClip.Duration();
int hr = pClip.SetLimits(tStart, tEnd);
if (hr < 0 || (tDur == pClip.Duration()))
{
return hr;
}
// this is called from the same message loop as the end-of-segment processing, so it's safe to
// access the current segment
if (pClip == CurrentClip())
{
// send just the stop time to the graph
// in the hope that it is not too late
hr = pClip.SetStopTime();
}
// clip duration has changed: update start position of
// all subsequent clips (for current position slider UI)
m_tDuration = 0;
bool bFound = false;
foreach (ClipEntry pThis in m_Clips)
{
if (pThis == pClip)
{
bFound = true;
m_tDuration = pClip.GetStartPosition() + pClip.Duration();
}
else if (bFound)
{
// following clip: adjust
pClip.SetStartPosition(m_tDuration);
m_tDuration += pClip.Duration();
}
}
return S_OK;
}