[FFmpeg-devel] [PATCH] Support the ASF_JFIF_Media stream type

[Michael Niedermayer]

On Mon, Jul 19, 2010 at 03:07:59PM +0300, Martin Storsj? wrote:
> Hi,
> 
> I've tried to add support for decoding the stream in issue 2070, 
> rtsp://melpomene.mmedia.upv.es/RETRANS_PR_01. These three patches are 
> needed for decoding it properly (in addition to a fix to rtpdec_asf, that 
> I'll send in a separate thread).
> 
> The stream header contains a new guid that wasn't supported before, that 
> according to a little googling is named ASF_JFIF_Media. The stream header 
> doesn't seem to contain enough data to pose as a normal video stream 
> header, so the check in patch 3 is necessary to avoid reading bogus data. 
> Or if we consider this as a completely separate stream type (even if the 
> type is AVMEDIA_TYPE_VIDEO), we perhaps should check if codec_id == 
> CODEC_ID_MJPEG and read a different kind of stream header in that case.
> 
> // Martin
>  asf.c |    4 ++++
>  asf.h |    1 +
>  2 files changed, 5 insertions(+)
> d2a7df007862f6497f119ef8ef7c7fbd6a668b1c  0001-asf-Add-asf_jfif_media-guid.patch
> From 7fc5a6ab44cfa6057514ae38a49cbf40b5aa3547 Mon Sep 17 00:00:00 2001
> From: Martin Storsjo <martin at martin.st>
> Date: Fri, 16 Jul 2010 20:21:40 +0300
> Subject: [PATCH 1/3] asf: Add asf_jfif_media guid

ok
[...]

>  asfdec.c |    3 +++
>  1 file changed, 3 insertions(+)
> 4e324bb80b31d8dd7e1394c37ee205c09885bac6  0002-asfdec-Handle-asf_jfif_media.patch
> From bf179cb70f24e3bd408625e447980d74ae2d33be Mon Sep 17 00:00:00 2001
> From: Martin Storsjo <martin at martin.st>
> Date: Mon, 19 Jul 2010 14:31:47 +0300
> Subject: [PATCH 2/3] asfdec: Handle asf_jfif_media

ok


[...]
>  asfdec.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 679e3dca18d780232f7e58bf5e2536250e5263e0  0003-asfdec-Don-t-read-the-video-stream-header-if-there-i.patch
> From 060ae03b4fee7c6107a67ad3170e42e5a97c9b09 Mon Sep 17 00:00:00 2001
> From: Martin Storsjo <martin at martin.st>
> Date: Mon, 19 Jul 2010 14:32:01 +0300
> Subject: [PATCH 3/3] asfdec: Don't read the video stream header if there isn't enough data


ok

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The misfortune of the wise is better than the prosperity of the fool.
-- Epicurus
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