[FFmpeg-devel] [PATCH 1/2] compat/avisynth: minor update for alpha offsets

[Stephen Hutchinson]

On 8/30/2016 8:26 PM, Stephen Hutchinson wrote:
> ---
>  compat/avisynth/avisynth_c.h | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/compat/avisynth/avisynth_c.h b/compat/avisynth/avisynth_c.h
> index 605b92a..2f84dd1 100644
> --- a/compat/avisynth/avisynth_c.h
> +++ b/compat/avisynth/avisynth_c.h
> @@ -533,7 +533,11 @@ typedef struct AVS_VideoFrame {
>    volatile long refcount;
>    AVS_VideoFrameBuffer * vfb;
>    int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
> -  int row_sizeUV, heightUV;
> +  int row_sizeUV, heightUV; // for Planar RGB offsetU, offsetV is for the 2nd and 3rd Plane.
> +                            // for Planar RGB pitchUV and row_sizeUV = 0, because when no VideoInfo (MakeWriteable)
> +                            // the decision on existance of UV is checked by zero pitch
> +  // AVS+ extension, avisynth.h: class does not break plugins if appended here
> +  int offsetA, pitchA, row_sizeA; // 4th alpha plane support, pitch and row_size is 0 is none
>  } AVS_VideoFrame;
>
>  // Access functions for AVS_VideoFrame
> @@ -753,7 +757,7 @@ enum {
>    AVS_CPUF_SSSE3      = 0x200,   //  Core 2
>    AVS_CPUF_SSE4       = 0x400,   //  Penryn, Wolfdale, Yorkfield
>    AVS_CPUF_SSE4_1     = 0x400,
> -//AVS_CPUF_AVX        = 0x800,   //  Sandy Bridge, Bulldozer
> +  AVS_CPUF_AVX        = 0x800,   //  Sandy Bridge, Bulldozer
>    AVS_CPUF_SSE4_2    = 0x1000,   //  Nehalem
>  //AVS_CPUF_AVX2      = 0x2000,   //  Haswell
>  //AVS_CPUF_AVX512    = 0x4000,   //  Knights Landing
>

Consider this patch revoked.  The changes don't affect FFmpeg's
handling of the discrete alpha formats, so my being cautious and
sending this patch wasn't necessary.