diff options
Diffstat (limited to 'libavfilter/vf_scale.c')
| -rw-r--r-- | libavfilter/vf_scale.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c index d95a8ad48a..759499395f 100644 --- a/libavfilter/vf_scale.c +++ b/libavfilter/vf_scale.c @@ -632,10 +632,12 @@ static int scale_slice(AVFilterLink *link, AVFrame *out_buf, AVFrame *cur_pic, s for (i=0; i<4; i++) { int vsub= ((i+1)&2) ? scale->vsub : 0; + ptrdiff_t in_offset = ((y>>vsub)+field) * cur_pic->linesize[i]; + ptrdiff_t out_offset = field * out_buf->linesize[i]; in_stride[i] = cur_pic->linesize[i] * mul; out_stride[i] = out_buf->linesize[i] * mul; - in[i] = FF_PTR_ADD(cur_pic->data[i], ((y>>vsub)+field) * cur_pic->linesize[i]); - out[i] = FF_PTR_ADD(out_buf->data[i], field * out_buf->linesize[i]); + in[i] = FF_PTR_ADD(cur_pic->data[i], in_offset); + out[i] = FF_PTR_ADD(out_buf->data[i], out_offset); } if (scale->input_is_pal) in[1] = cur_pic->data[1]; |