[FFmpeg-devel] [PATCH] swscale: add unscaled copy from yuv420p10 to p010

[Michael Niedermayer]

On Thu, Sep 01, 2016 at 05:23:04PM +0200, Timo Rothenpieler wrote:
> ---
>  libswscale/swscale_unscaled.c | 39 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
> 
> diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c
> index b231abe..51768fa 100644
> --- a/libswscale/swscale_unscaled.c
> +++ b/libswscale/swscale_unscaled.c
> @@ -197,6 +197,40 @@ static int nv12ToPlanarWrapper(SwsContext *c, const uint8_t *src[],
>      return srcSliceH;
>  }
>  
> +static int planarToP010Wrapper(SwsContext *c, const uint8_t *src8[],
> +                               int srcStride[], int srcSliceY,
> +                               int srcSliceH, uint8_t *dstParam8[],
> +                               int dstStride[])
> +{
> +    uint16_t *src[] = {
> +        (uint16_t*)(src8[0] + srcStride[0] * srcSliceY),
> +        (uint16_t*)(src8[1] + srcStride[1] * srcSliceY),
> +        (uint16_t*)(src8[2] + srcStride[2] * srcSliceY)
> +    };
> +    uint16_t *dstY = (uint16_t*)(dstParam8[0] + dstStride[0] * srcSliceY);
> +    uint16_t *dstUV = (uint16_t*)(dstParam8[1] + dstStride[1] * srcSliceY / 2);
> +    int x, y;
> +
> +    for (y = srcSliceY; y < srcSliceY + srcSliceH; y++) {
> +        if (!(y & 1)) {
> +            for (x = 0; x < c->srcW / 2; x++) {
> +                dstUV[x*2  ] = src[1][x] << 6;
> +                dstUV[x*2+1] = src[2][x] << 6;
> +            }
> +            src[1] += srcStride[1] / 2;
> +            src[2] += srcStride[2] / 2;
> +            dstUV += dstStride[1] / 2;
> +        }
> +        for (x = 0; x < c->srcW; x++) {
> +            dstY[x] = src[0][x] << 6;
> +        }
> +        src[0] += srcStride[0] / 2;
> +        dstY += dstStride[0] / 2;
> +    }
> +
> +    return srcSliceH;
> +}

I think some check for strides to be a multiple of 2 should be added
unless thats already checked somewhere
LGTM otherwise

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

It is what and why we do it that matters, not just one of them.
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