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| author | Clément Bœsch <ubitux@gmail.com> | 2013-05-11 02:31:09 +0400 |
|---|---|---|
| committer | Clément Bœsch <ubitux@gmail.com> | 2013-05-28 21:20:27 +0400 |
| commit | 1f1df07ce56103142aac64aa807c53b5c921ff4e (patch) | |
| tree | 03ed1e68412044595b0e6f4bb1c11d238599f165 /libavfilter/drawutils.c | |
| parent | 32475f56f38d321b123fce116bc4521f6af0d738 (diff) | |
lavfi/drawutils: attempt to fix subsampling.
Diffstat (limited to 'libavfilter/drawutils.c')
| -rw-r--r-- | libavfilter/drawutils.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/libavfilter/drawutils.c b/libavfilter/drawutils.c index 272d9df6bb..b2307616e4 100644 --- a/libavfilter/drawutils.c +++ b/libavfilter/drawutils.c @@ -93,7 +93,7 @@ int ff_fill_line_with_color(uint8_t *line[4], int pixel_step[4], int w, uint8_t int hsub1 = (plane == 1 || plane == 2) ? hsub : 0; pixel_step[plane] = 1; - line_size = (w >> hsub1) * pixel_step[plane]; + line_size = FF_CEIL_RSHIFT(w, hsub1) * pixel_step[plane]; line[plane] = av_malloc(line_size); memset(line[plane], dst_color[plane], line_size); } @@ -112,11 +112,13 @@ void ff_draw_rectangle(uint8_t *dst[4], int dst_linesize[4], for (plane = 0; plane < 4 && dst[plane]; plane++) { int hsub1 = plane == 1 || plane == 2 ? hsub : 0; int vsub1 = plane == 1 || plane == 2 ? vsub : 0; + int width = FF_CEIL_RSHIFT(w, hsub1); + int height = FF_CEIL_RSHIFT(h, vsub1); p = dst[plane] + (y >> vsub1) * dst_linesize[plane]; - for (i = 0; i < (h >> vsub1); i++) { + for (i = 0; i < height; i++) { memcpy(p + (x >> hsub1) * pixelstep[plane], - src[plane], (w >> hsub1) * pixelstep[plane]); + src[plane], width * pixelstep[plane]); p += dst_linesize[plane]; } } @@ -132,11 +134,13 @@ void ff_copy_rectangle(uint8_t *dst[4], int dst_linesize[4], for (plane = 0; plane < 4 && dst[plane]; plane++) { int hsub1 = plane == 1 || plane == 2 ? hsub : 0; int vsub1 = plane == 1 || plane == 2 ? vsub : 0; + int width = FF_CEIL_RSHIFT(w, hsub1); + int height = FF_CEIL_RSHIFT(h, vsub1); p = dst[plane] + (y >> vsub1) * dst_linesize[plane]; - for (i = 0; i < (h >> vsub1); i++) { + for (i = 0; i < height; i++) { memcpy(p + (x >> hsub1) * pixelstep[plane], - src[plane] + src_linesize[plane]*(i+(y2>>vsub1)), (w >> hsub1) * pixelstep[plane]); + src[plane] + src_linesize[plane]*(i+(y2>>vsub1)), width * pixelstep[plane]); p += dst_linesize[plane]; } } @@ -233,8 +237,8 @@ void ff_copy_rectangle2(FFDrawContext *draw, for (plane = 0; plane < draw->nb_planes; plane++) { p = pointer_at(draw, src, src_linesize, plane, src_x, src_y); q = pointer_at(draw, dst, dst_linesize, plane, dst_x, dst_y); - wp = (w >> draw->hsub[plane]) * draw->pixelstep[plane]; - hp = (h >> draw->vsub[plane]); + wp = FF_CEIL_RSHIFT(w, draw->hsub[plane]) * draw->pixelstep[plane]; + hp = FF_CEIL_RSHIFT(h, draw->vsub[plane]); for (y = 0; y < hp; y++) { memcpy(q, p, wp); p += src_linesize[plane]; @@ -252,8 +256,8 @@ void ff_fill_rectangle(FFDrawContext *draw, FFDrawColor *color, for (plane = 0; plane < draw->nb_planes; plane++) { p0 = pointer_at(draw, dst, dst_linesize, plane, dst_x, dst_y); - wp = (w >> draw->hsub[plane]); - hp = (h >> draw->vsub[plane]); + wp = FF_CEIL_RSHIFT(w, draw->hsub[plane]); + hp = FF_CEIL_RSHIFT(h, draw->vsub[plane]); if (!hp) return; p = p0; |