/// <summary>
/// Add VMR7 filter to graph and configure it
/// </summary>
/// <param name="graphBuilder"></param>
public void AddVMR7(IGraphBuilder graphBuilder)
{
Log.Info("VMR7Helper:AddVMR7");
if (vmr7intialized)
{
return;
}
VMR7Filter = (IBaseFilter) new VideoMixingRenderer();
if (VMR7Filter == null)
{
Error.SetError("Unable to play movie", "VMR7 is not installed");
Log.Error("VMR7Helper:Failed to get instance of VMR7 ");
return;
}
int hr;
IVMRFilterConfig config = VMR7Filter as IVMRFilterConfig;
if (config != null)
{
hr = config.SetNumberOfStreams(1);
if (hr != 0)
{
Log.Error("VMR7Helper:Failed to set number of streams:0x{0:X}", hr);
DirectShowUtil.ReleaseComObject(VMR7Filter);
VMR7Filter = null;
return;
}
}
hr = graphBuilder.AddFilter(VMR7Filter, "Video Mixing Renderer");
if (hr != 0)
{
Error.SetError("Unable to play movie", "Unable to initialize VMR7");
Log.Error("VMR7Helper:Failed to add VMR7 to filtergraph");
DirectShowUtil.ReleaseComObject(VMR7Filter);
VMR7Filter = null;
return;
}
m_graphBuilder = graphBuilder;
m_mixerBitmap = VMR7Filter as IVMRMixerBitmap;
quality = VMR7Filter as IQualProp;
g_vmr7 = this;
vmr7intialized = true;
}
private void BuildGraph()
{
int hr = 0;
graphBuilder = (IFilterGraph2) new FilterGraph();
vmr = (IBaseFilter) new VideoMixingRenderer();
hr = graphBuilder.AddFilter(vmr, "VMR");
DsError.ThrowExceptionForHR(hr);
// To enable the VMR7's mixer and compositor
hr = (vmr as IVMRFilterConfig).SetNumberOfStreams(1);
DsError.ThrowExceptionForHR(hr);
hr = graphBuilder.RenderFile(@"..\..\..\Resources\foo.avi", null);
DsError.ThrowExceptionForHR(hr);
mixerBitmap = (IVMRMixerBitmap)vmr;
}
/// <summary>
/// removes the VMR7 filter from the graph and free up all unmanaged resources
/// </summary>
public void RemoveVMR7()
{
if (vmr7intialized)
{
int result;
Log.Info("VMR7Helper:RemoveVMR7");
//if (m_mixerBitmap != null)
// while ((result=DirectShowUtil.ReleaseComObject(m_mixerBitmap))>0);
m_mixerBitmap = null;
// if (quality != null)
// while ((result=DirectShowUtil.ReleaseComObject(quality))>0);
quality = null;
if (VMR7Filter != null)
{
//while ((result=DirectShowUtil.ReleaseComObject(VMR7Filter))>0);
try
{
result = m_graphBuilder.RemoveFilter(VMR7Filter);
if (result != 0)
{
Log.Info("VMR7Helper:RemoveFilter():{0}", result);
}
}
catch (Exception) {}
while ((result = DirectShowUtil.ReleaseComObject(VMR7Filter)) > 0)
{
;
}
if (result != 0)
{
Log.Info("VMR7Helper:ReleaseComObject():{0}", result);
}
m_graphBuilder = null;
}
vmr7intialized = false;
g_vmr7 = null;
}
}
/// <summary>
/// Add VMR7 filter to graph and configure it
/// </summary>
/// <param name="graphBuilder"></param>
public void AddVMR7(IGraphBuilder graphBuilder)
{
Log.Info("VMR7Helper:AddVMR7");
if (vmr7intialized)
{
return;
}
VMR7Filter = (IBaseFilter)new VideoMixingRenderer();
if (VMR7Filter == null)
{
Error.SetError("Unable to play movie", "VMR7 is not installed");
Log.Error("VMR7Helper:Failed to get instance of VMR7 ");
return;
}
int hr;
IVMRFilterConfig config = VMR7Filter as IVMRFilterConfig;
if (config != null)
{
hr = config.SetNumberOfStreams(1);
if (hr != 0)
{
Log.Error("VMR7Helper:Failed to set number of streams:0x{0:X}", hr);
DirectShowUtil.ReleaseComObject(VMR7Filter);
VMR7Filter = null;
return;
}
}
hr = graphBuilder.AddFilter(VMR7Filter, "Video Mixing Renderer");
if (hr != 0)
{
Error.SetError("Unable to play movie", "Unable to initialize VMR7");
Log.Error("VMR7Helper:Failed to add VMR7 to filtergraph");
DirectShowUtil.ReleaseComObject(VMR7Filter);
VMR7Filter = null;
return;
}
m_graphBuilder = graphBuilder;
m_mixerBitmap = VMR7Filter as IVMRMixerBitmap;
quality = VMR7Filter as IQualProp;
g_vmr7 = this;
vmr7intialized = true;
}
/// <summary>
/// removes the VMR7 filter from the graph and free up all unmanaged resources
/// </summary>
public void RemoveVMR7()
{
if (vmr7intialized)
{
int result;
Log.Info("VMR7Helper:RemoveVMR7");
//if (m_mixerBitmap != null)
// while ((result=DirectShowUtil.ReleaseComObject(m_mixerBitmap))>0);
m_mixerBitmap = null;
// if (quality != null)
// while ((result=DirectShowUtil.ReleaseComObject(quality))>0);
quality = null;
if (VMR7Filter != null)
{
//while ((result=DirectShowUtil.ReleaseComObject(VMR7Filter))>0);
try
{
result = m_graphBuilder.RemoveFilter(VMR7Filter);
if (result != 0)
{
Log.Info("VMR7Helper:RemoveFilter():{0}", result);
}
}
catch (Exception) {}
while ((result = DirectShowUtil.ReleaseComObject(VMR7Filter)) > 0)
{
;
}
if (result != 0)
{
Log.Info("VMR7Helper:ReleaseComObject():{0}", result);
}
m_graphBuilder = null;
}
vmr7intialized = false;
g_vmr7 = null;
}
}
