[FFmpeg-devel] [PATCH 2/2] doc/examples: add audio decoding/filtering example.

[Clément Bœsch]

On Tue, Feb 21, 2012 at 04:59:07PM +0200, Andrey Utkin wrote:
> 2012/2/20 Clément Bœsch <ubitux at gmail.com>:
> > +    /* buffer audio sink: to terminate the filter chain. */
> > +    abuffersink_params = av_abuffersink_params_alloc();
> > +    abuffersink_params->sample_fmts     = sample_fmts;
> > +    abuffersink_params->channel_layouts = chlayouts;
> > +    abuffersink_params->packing_fmts    = packing_fmts;
> > +    ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
> > +                                       NULL, abuffersink_params, filter_graph);
> 
> Looking at
> libavfilter/avfiltergraph.c:68
> libavfilter/avfilter.c:876

Why do you think this...

> and
> libavfilter/asink_anullsink.c

...will call this callback?

> i find that abuffersink_params is not treated in any way, and is not
> saved anywhere. Is that right, or i miss sth?

The correct callback is asink_init() in lavfi/sink_buffer.c, where the
opaque pointer is used.

-- 
Clément B.
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