private void ProcessServerSample(IBufferPacket packet)
{
// Only process samples when we are in started state
StspSampleHeader sampleHead;
// Copy the header object
sampleHead = StreamConvertor.TakeObject <StspSampleHeader>(packet);
if (packet.GetLength() < 0)
{
ThrowIfError(HResult.E_INVALIDARG);
}
if (sampleHead.dwStreamId != _videoStreamId)
{
return;
}
// Convert packet to MF sample
IMFSample spSample;
ThrowIfError(ToMFSample(packet, out spSample));
SetSampleAttributes(sampleHead, spSample);
_decoder.ProcessSample(spSample);
}
private void ProcessServerSample(IBufferPacket packet)
{
if (_eSourceState == SourceState.SourceState_Started)
{
// Only process samples when we are in started state
StspSampleHeader sampleHead;
// Copy the header object
sampleHead = StreamConvertor.TakeObject <StspSampleHeader>(packet);
if (packet.GetLength() < 0)
{
ThrowIfError(HResult.E_INVALIDARG);
}
MediaStream spStream;
ThrowIfError(GetStreamById(sampleHead.dwStreamId, out spStream));
if (spStream.IsActive)
{
// Convert packet to MF sample
IMFSample spSample;
ThrowIfError(ToMFSample(packet, out spSample));
// Forward sample to a proper stream.
spStream.ProcessSample(sampleHead, spSample);
}
}
else
{
Throw(HResult.MF_E_UNEXPECTED);
}
}
private void invokePacketComplete()
{
if (null == OnPacketReceived)
{
return;
}
//Debug.WriteLine($"Buffer complete. buffer length:{_penddingPacket.GetLength()} data length:{_penddingPacket.GetFirstOptionDataLength()}");
IBufferPacket p;
lock (_penddingPacketLock)
{
p = _penddingPacket.TakeFirstOption();
}
var header = StreamConvertor.TakeObject <StspOperationHeader>(p);
if (header.cbDataSize != p.GetLength())
{
throw new InvalidNetworkBufferException();
}
try
{
OnPacketReceived(header.eOperation, p);
}
catch (Exception ex)
{
Debug.WriteLine($"Exception when invoke PacketComplete event handler:\r{ex.Message} \r {ex.StackTrace}");
}
}
private void ProcessServerFormatChange(IBufferPacket packet)
{
IntPtr ptr;
try
{
if (_eSourceState != SourceState.SourceState_Started)
{
Throw(HResult.MF_E_UNEXPECTED);
}
int cbTotalLen = packet.GetLength();
if (cbTotalLen <= 0)
{
Throw(HResult.E_INVALIDARG);
}
// Minimum size of the operation payload is size of Description structure
if (cbTotalLen < Marshal.SizeOf(typeof(StspStreamDescription)))
{
ThrowIfError(HResult.MF_E_UNSUPPORTED_FORMAT);
}
//todo: add try or use enhanced method to judge the HResult received from TakeObject(...)
StspStreamDescription streamDesc = StreamConvertor.TakeObject <StspStreamDescription>(packet);
if (cbTotalLen != Marshal.SizeOf(typeof(StspStreamDescription)) + streamDesc.cbAttributesSize || streamDesc.cbAttributesSize == 0)
{
ThrowIfError(HResult.MF_E_UNSUPPORTED_FORMAT);
}
// Prepare buffer where we will copy attributes to
ptr = Marshal.AllocHGlobal(streamDesc.cbAttributesSize);
var data = packet.TakeBuffer(streamDesc.cbAttributesSize);
Marshal.Copy(data, 0, ptr, streamDesc.cbAttributesSize);
IMFMediaType spMediaType;
// Create a media type object.
ThrowIfError(MFExtern.MFCreateMediaType(out spMediaType));
// Initialize media type's attributes
ThrowIfError(MFExtern.MFInitAttributesFromBlob(spMediaType, ptr, streamDesc.cbAttributesSize));
}
catch (Exception ex)
{
throw ex;
}
Marshal.Release(ptr);
}
private void ProcessServerDescription(IBufferPacket data)
{
StspDescription desc = new StspDescription();
var dataLen = data.GetLength();
int descSize = Marshal.SizeOf(typeof(StspDescription));
int streamDescSize = Marshal.SizeOf(typeof(StspStreamDescription));
// Copy description
desc = StreamConvertor.TakeObject <StspDescription>(data);
// Size of the packet should match size described in the packet (size of Description structure + size of attribute blob)
var cbConstantSize = Convert.ToInt32(descSize + (desc.cNumStreams - 1) * streamDescSize);
// Check if the input parameters are valid. We only support 2 streams.
if (cbConstantSize < Marshal.SizeOf(desc) || desc.cNumStreams == 0 || desc.cNumStreams > 2 || dataLen < cbConstantSize)
{
ThrowIfError(HResult.MF_E_UNSUPPORTED_FORMAT);
}
try
{
List <StspStreamDescription> streamDescs = new List <StspStreamDescription>(desc.aStreams);
for (int i = 1; i < desc.cNumStreams; i++)
{
var sd = StreamConvertor.TakeObject <StspStreamDescription>(data);
streamDescs.Add(sd);
}
int cbAttributeSize = 0;
for (int i = 0; i < desc.cNumStreams; ++i)
{
cbAttributeSize += streamDescs[i].cbAttributesSize;
/* todo: check out of range on cbAttributeSize
* if (out of range)
* {
* Throw(HResult.MF_E_UNSUPPORTED_FORMAT);
* }*/
}
// Validate the parameters. Limit the total size of attributes to 64kB.
if ((dataLen != (cbConstantSize + cbAttributeSize)) || (cbAttributeSize > 0x10000))
{
Throw(HResult.MF_E_UNSUPPORTED_FORMAT);
}
//only init for the first video stream.
foreach (var sd in streamDescs)
{
if (sd.guiMajorType == MFMediaType.Video)
{
initVideoDesctriptor(sd, data);
_decoder.initialize(_videoStreamId, _videoMediaType);
break;
}
}
}
catch (Exception ex)
{
throw ex;
}
}
private void ProcessServerDescription(IBufferPacket data)
{
StspDescription desc = new StspDescription();
var dataLen = data.GetLength();
int descSize = Marshal.SizeOf(typeof(StspDescription));
int streamDescSize = Marshal.SizeOf(typeof(StspStreamDescription));
// Copy description
desc = StreamConvertor.TakeObject <StspDescription>(data);
// Size of the packet should match size described in the packet (size of Description structure + size of attribute blob)
var cbConstantSize = Convert.ToInt32(descSize + (desc.cNumStreams - 1) * streamDescSize);
// Check if the input parameters are valid. We only support 2 streams.
if (cbConstantSize < Marshal.SizeOf(desc) || desc.cNumStreams == 0 || desc.cNumStreams > 2 || dataLen < cbConstantSize)
{
ThrowIfError(HResult.MF_E_UNSUPPORTED_FORMAT);
}
try
{
List <StspStreamDescription> streamDescs = new List <StspStreamDescription>(desc.aStreams);
for (int i = 1; i < desc.cNumStreams; i++)
{
var sd = StreamConvertor.TakeObject <StspStreamDescription>(data);
streamDescs.Add(sd);
}
int cbAttributeSize = 0;
for (int i = 0; i < desc.cNumStreams; ++i)
{
cbAttributeSize += streamDescs[i].cbAttributesSize;
/* todo: check out of range on cbAttributeSize
* if (out of range)
* {
* Throw(HResult.MF_E_UNSUPPORTED_FORMAT);
* }*/
}
// Validate the parameters. Limit the total size of attributes to 64kB.
if ((dataLen != (cbConstantSize + cbAttributeSize)) || (cbAttributeSize > 0x10000))
{
Throw(HResult.MF_E_UNSUPPORTED_FORMAT);
}
// Create stream for every stream description sent by the server.
foreach (var sd in streamDescs)
{
MediaStream spStream;
ThrowIfError(MediaStream.CreateInstance(sd, data, this, out spStream));
_streams.Add(spStream);
}
InitPresentationDescription();
// Everything succeeded we are in stopped state now
_eSourceState = SourceState.SourceState_Stopped;
CompleteOpen(HResult.S_OK);
}
catch (Exception ex)
{
throw ex;
}
}