[FFmpeg-devel] [RFC] ffv1: 16bit gray support

[Michael Niedermayer]

On Sat, Feb 04, 2012 at 01:35:14AM +0000, Paul B Mahol wrote:
> 
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
> ---
>  libavcodec/ffv1.c |   26 +++++++++++++++++++++++---
>  1 files changed, 23 insertions(+), 3 deletions(-)
> 
> diff --git a/libavcodec/ffv1.c b/libavcodec/ffv1.c
> index 667b8ea..3cf218a 100644
> --- a/libavcodec/ffv1.c
> +++ b/libavcodec/ffv1.c
> @@ -912,6 +912,18 @@ static av_cold int encode_init(AVCodecContext *avctx)
>  
>      avctx->coded_frame= &s->picture;
>      switch(avctx->pix_fmt){
> +    case PIX_FMT_GRAY16:
> +        if(avctx->bits_per_raw_sample <=8){
> +            av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
> +            return -1;
> +        }
> +        if(!s->ac){
> +            av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
> +            return -1;
> +        }
> +        s->colorspace= 2;

this should be colorspace = 0 and grayscale = 1
ok we have no grayscale variable in the implementation but the spec
does have one.
put_rac(c, state, 1); //chroma planes  <------grayscale

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

Breaking DRM is a little like attempting to break through a door even
though the window is wide open and the only thing in the house is a bunch
of things you dont want and which you would get tomorrow for free anyway
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