On Sat, Apr 22, 2017 at 6:33 AM, Luca Barbato <[email protected]> wrote: > From: Paul B Mahol <[email protected]> > > Signed-off-by: Paul B Mahol <[email protected]> > Signed-off-by: Luca Barbato <[email protected]> > --- > libavcodec/utvideodec.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c > index 0f58c83..ed6368e 100644 > --- a/libavcodec/utvideodec.c > +++ b/libavcodec/utvideodec.c > @@ -686,7 +686,11 @@ static void restore_gradient_planar_il(UtvideoContext > *c, uint8_t *src, ptrdiff_ > C = bsrc[i - 1]; > bsrc[i] = (A - B + C + bsrc[i]) & 0xFF; > } > - for (i = 0; i < width; i++) { > + A = bsrc[-stride]; > + B = bsrc[-(1 + stride + stride - width)]; > + C = bsrc[width - 1]; > + bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF; > + for (i = 1; i < width; i++) { > A = bsrc[i - stride]; > B = bsrc[i - (1 + stride)]; > C = bsrc[i - 1 + stride]; > @@ -784,7 +788,11 @@ static void restore_gradient_packed_il(uint8_t *src, int > step, ptrdiff_t stride, > C = bsrc[i - step]; > bsrc[i] = (A - B + C + bsrc[i]) & 0xFF; > } > - for (i = 0; i < width * step; i += step) { > + A = bsrc[-stride]; > + B = bsrc[-(step + stride + stride - width * step)]; > + C = bsrc[width * step - step]; > + bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF; > + for (i = step; i < width * step; i += step) { > A = bsrc[i - stride]; > B = bsrc[i - (step + stride)]; > C = bsrc[i - step + stride]; > --
probably ok -- Vittorio _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
