[FFmpeg-devel] avfilter_graph Question

[Paul B Mahol]

Dana 14. 10. 2015. 17:36 osoba "Grady Player" <
grady.player at verizondigitalmedia.com> napisala je:
>
> Currently using:
>
> commit af5917698bd44f136fd0ff00a9e5f8b5f92f2d58
> Author: Michael Niedermayer <michaelni at gmx.at>
> Date:   Sun May 17 01:34:35 2015 +0200
>
> I am trying to set up a small filter graph in order to use the YADIF
implementation in libavfilter...
>
> I have set up an avfilter_graph with 3 filters…
>
>     avfilter_register_all();
>     avfGraph = avfilter_graph_alloc();
>
>     AVFilter * bufferFilter, * yadifFilter, * bufferSink;
>
>     bufferFilter = avfilter_get_by_name("buffer");
>     yadifFilter = avfilter_get_by_name("yadif");
>     bufferSink = avfilter_get_by_name("buffersink”);
>
>   /* dynamic configuration here */
>
>     avfilter_graph_create_filter(/*done for each filter */);
>
>     if (err >= 0) err = avfilter_link(buffer_ctx, 0, yadif_ctx, 0);
>     if (err >= 0) err = avfilter_link(yadif_ctx, 0, sink_ctx, 0);
>
>     if (err>=0) err = avfilter_graph_config(avfGraph, NULL);
>
>
> Then I feed frames into the graph with:
>
>     err = av_buffersrc_add_frame(buffer_ctx, avf);
>
> and pull frames out of the graph with:
>
>   AVFrame * oframe = av_frame_alloc();
>   err = av_buffersink_get_frame(sink_ctx, oframe);
>
>
>  this all seems to work pretty well, except it is holding on to a lot of
memory that is released in avfilter_graph_free()
>
> I suspect it is something dumb, but is there something I need to be doing
to release internal references to some resource?
>
>
>

Do you free frame you no longer need?
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