[NUT-devel] [PATCH] Additional planar YUVA? format fourccs

[Michael Niedermayer]

On Fri, May 21, 2010 at 12:18:32AM +0200, Stefano Sabatini wrote:
> Hi,
> 
> this follows from a discussion on ffmpeg-devel:
> http://thread.gmane.org/20100514214352.GE2585@MichaelsNB
> 
> We need this in order to support to contain in NUT all the formats
> currently supported by FFmpeg, which in turn is required by the lavfi
> test system.
> 
> Regards.

>  nut4cc.txt |   32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 8bcd168001001097502f105d2283671d83d5effd  define-yuva-fourcc.patch
> Index: docs/nut4cc.txt
> ===================================================================
> --- docs/nut4cc.txt	(revision 668)
> +++ docs/nut4cc.txt	(working copy)
> @@ -101,6 +101,38 @@
>  RGB[48] Packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as little-endian [NOT in AVI]
>  [48]RGB Packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big-endian    [NOT in AVI]
>  
> +Since many exotic planar YUVA pixel formats are not contemplated by
> +AVI/QuickTime FourCC list, the following scheme is adopted for
> +representing them.
> +
> +The first two bytes can contains the values:
> +Y1 = only Y
> +Y3 = YUV
> +Y4 = YUVA

> +YA = Y+A

Y2

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I wish the Xiph folks would stop pretending they've got something they
do not.  Somehow I fear this will remain a wish. -- Måns Rullgård
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