On 2011-10-14 17:04, Ross Finlayson wrote:
Now, I can use this filter as the source of my custom subsession object, then
pass True as reuseFirstSource argument of the subsession constructor, so I can
just use one filter to serve multiple remote player, right?
Yes, that should work.
However, your filter class is not quite right. In your
"afterGettingCallback()" function, you need to set the filter's "fFrameSize",
"fNumTruncatedBytes", "fPresentationTime", and "fDurationInMicroseconds" member
variables from the corresponding function parameters: "frameSize",
"numTruncatedBytes", "presentationTime", and "durationInMicroseconds".
Thanks, According to your advise, I have updated my code. But there is another
problem here.
My filter chain look like:
H264VideoRTPSource -> MyFilter -> H264VideoRTPSink.
The reason I use a Filter betweens H264VideoRTPSource and
H264VideoRTPSink is, I want save the file and send to multiple remote
player(unicast) simultaneously.
But it seems the H264VideoRTPSink can only work with H264VideoStreamFramer
directly in the current source .
I found, if my filter want to act as a source for H264VideoRTPSink, my filter
must implement 2 methods:
1) Boolean& PictureEndMarker();
2) void GetSPSandPPS(u_int8_t*& sps, unsigned& spsSize, u_int8_t*& pps,
unsigned& ppsSize);
Now, I use H264VideoStreamFramer as the model and implemented the
GetSPSAndPPS() method, but the PictureEndMarker() method seems difficult to
implement in such situation, it want to see the next packet to determine
whether picture end mark(See the code in H264VideoStreamParser::parse()).
Could you give me an advise or some sample code?
--
邱关坚
KwanKin Yau
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