[FFmpeg-devel] [PATCH] rtsp: Handle standard assigned codec names for private payload types, too

Martin Storsjö martin
Wed Sep 15 19:39:43 CEST 2010

On Wed, 15 Sep 2010, Ronald S. Bultje wrote:

> On Mon, Sep 13, 2010 at 2:44 AM, Martin Storsj? <martin at martin.st> wrote:
> > On Sun, 12 Sep 2010, Ronald S. Bultje wrote:
> >> On Sat, Sep 11, 2010 at 3:24 PM, Martin Storsj? <martin at martin.st> wrote:
> >> > In most cases, the payload type in RTP is one of the standard assigned
> >> > numbers (below 96) for codecs that have a standard number assigned, and
> >> > private/dynamic ones for others. If, for some reason, a stream uses a
> >> > dynamic payload type number for a codec with a standard type, we currently
> >> > fail to open the stream properly. The attached patch uses ff_rtp_codec_id
> >> > to find the right codec ID for such streams, if no matching dynamic
> >> > handler was found.
> >>
> >> I think rtpdec.c already handles this, e.g. for PCM audio etc.
> >
> > No, it doesn't. rtpdec.c never is given the textual string that describes
> > the payload from the rtpmap SDP line, it's never passed outside of
> > sdp_parse_rtpmap in rtsp.c, so we need to map it into a codec id there.
> Hm, ok, can you add that in a comment then? I would expect it to, but
> I totally see how that'd be tripple the code of this. So it's ok with
> a comment.

Applied with a (hopefully) descriptive comment.

// Martin

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