Thanks a lot for explaining this. I do see now that the needed metadata is being set on the HTTPContext struct in the http protocol file. For the ffmpeg.c app, AVFormatContext along with a few others are the only accessible structs through the public headers.
HTTPContext, HLSContext and others are just defined inside their respective private implementations. AVFormatContext's priv->data also carries this context in it. If there are something set in the HTTPContext through av_dict_set and I wanted to access it inside ffmpeg.c using av_dict_get, what instance should this be called on? AVFormatContext->priv_data cast as an HTTPContext? What if I wanted to use AVClass to verify that the class name and only then proceed with reading the option? Thanks again. Kamal On Fri, Jan 13, 2017 at 3:21 PM, wm4 <nfx...@googlemail.com> wrote: > On Fri, 13 Jan 2017 14:35:09 +0530 > Kamaldeep Tumkur <kamaldeep.tum...@gmail.com> wrote: > >> Hi All, >> >> I am trying to use the HLSContext struct inside ffmpeg.c, in order to >> have access to the context's send_buffer_size value. However, the >> context struct is only defined inside hlsenc.c. >> >> Is there a specific reason for hlsenc not to have a header file? Are >> there any other options I may be missing? Please suggest. > > It's not public API, so it doesn't have a public header. ffmpeg.c is > supposed to use public APIs only. > > I don't think there's a precedent of a muxer providing "extra" API via > additional public structs/functions outside of avcodec.h. But there are > cases where AVOptions are used to communicate data back and forth an > implementation. E.g. the HTTP protocol uses an AVOption named > "metadata" to return certain HTTP headers back to the API user. > > Not sure what's the best thing here to do. Either way, it's probably > going to be slightly unclean. But I'm fairly sure exposing the entire > HLSContext struct is not a reasonable option. > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel