[vlc-devel] [vlc-commits] v4l2: update and sort the codec table

[Rémi Denis-Courmont]

On Fri, 23 Mar 2012 22:01:20 +0100 (CET), git at videolan.org (Rémi
Denis-Courmont) wrote:
>      /* Compressed data types */
> +    { V4L2_PIX_FMT_JPEG,   VLC_CODEC_MJPG, 0, 0, 0 },

It seems VLC_CODEC_JPEG is an aliased FOURCC for VLC_CODEC_MJPG. This is
confusing IMHO. Is there supposed to be a difference?

> +    { V4L2_PIX_FMT_H264,   VLC_CODEC_H264, 0, 0, 0 },

This works fine with UVC H264-encoding cameras.

> +    /* FIXME: fill p_extra for avc1... */
> +//  { V4L2_PIX_FMT_H264_NO_SC, VLC_FOURCC('a','v','c','1'), 0, 0, 0 }

I cannot test it, but I assume this requires p_extra/i_extra to be set,
right? Does anyone have a clue how to initialize an H.264 without start
code elementary stream?

> +    { V4L2_PIX_FMT_MPEG4,  VLC_CODEC_MP4V, 0, 0, 0 },
> +    { V4L2_PIX_FMT_XVID,   VLC_CODEC_MP4V, 0, 0, 0 },
> +    { V4L2_PIX_FMT_H263,   VLC_CODEC_H263, 0, 0, 0 },
> +    { V4L2_PIX_FMT_MPEG2,  VLC_CODEC_MPGV, 0, 0, 0 },
> +    { V4L2_PIX_FMT_MPEG1,  VLC_CODEC_MPGV, 0, 0, 0 },
> +    { V4L2_PIX_FMT_VC1_ANNEX_G, VLC_CODEC_VC1, 0, 0, 0 },
> +    { V4L2_PIX_FMT_VC1_ANNEX_L, VLC_CODEC_VC1, 0, 0, 0 },

I could not test any of these. They may be wrong.

-- 
Rémi Denis-Courmont
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