Ronald S. Bultje <rsbultje <at> gmail.com> writes: > Yes it can do all of that. Start looking at ffplay.c it is way more > complex than what you need, but will serve as an example. > libavcodec/api-example.c is a simple decoding example, and the packet > reading can be got from ffplay.c.
Had a look at those. Maybe decoding from a file is easy. I would start with "av_register_all();". Then I have to open the file with avformat_open_input. av_find_stream_info should allow me to find out what kinds of streams are in that file. I would just loop over them to find the first audio stream. Next step would be avcodec_find_decoder, then avcodec_open. Stuff about actually decoding the input file still has to be discovered... What I can't find out is how to read my custom stream. What I have is a C++ class. I create a instance of this and pass the URL to the constructor. The class then offers a "read" function, which returns a memory buffer to what already has been received and a byte count so I know how many bytes are in that buffer. The buffer has to be emptied completely, so I hope ffmpeg provides buffers with an matching size... At end of playback the class function "close" has to be called. First problem is, that I need a way to forward the class pointer of my c++ class down to whatever function libavcodec uses to read the stream, so I can avoid global variables. And the biggest problem: I have no idea how I can connect my custom stream handling to libavcodec... "Seek", of course, doesn't work for a stream. So what I need is some kind of "open()", "read()" and "close()". Yours Manuel _______________________________________________ libav-api mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-api
