[Ffmpeg-devel] [PATCH] PNG 16-bit grayscale support

[Kostya]

On Sun, Oct 15, 2006 at 05:18:20PM +0200, Michael Niedermayer wrote:
> Hi
> 
[...]
> >  
> > +    PIX_FMT_GRAY16,     ///<        Y        , 16bpp big-endian
> 
> GRAY16 should be native endian, no realistic code besides memcpy and similar
> will be able to handle non native 16bit efficiently
> 
> if a PIX_FMT_GRAY16BE and PIX_FMT_GRAY16LE is usefull or not is something iam
> unsure about, id say we could always add them later if needed, but if you want
> to add them then iam fine with that too

A serach for documentation showed that formats that are known to support
16-bit depth explicitly define it to be in "Network format order" (PNG spec)
or "MSB first" (PGM spec). But renaming format PIX_FMT_GRAY16BE seems logical.

> 
> [...]
> -- 
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
> 
> In the past you could go to a library and read, borrow or copy any book
> Today you'd get arrested for mere telling someone where the library is
>