diff options
| author | Clément Bœsch <ubitux@gmail.com> | 2013-05-07 16:31:02 +0200 |
|---|---|---|
| committer | Clément Bœsch <ubitux@gmail.com> | 2013-05-09 16:59:42 +0200 |
| commit | 570d63eef3f911869672cd20fa9c2abedb11093d (patch) | |
| tree | 2b993b08de62362e2e59e8049e28a92e6c2bb0af /libavutil | |
| parent | d9cb1e0e15e5cabb0b36f10cba079ea6532ed8e7 (diff) | |
lavu: add FF_CEIL_RSHIFT and use it in various places.
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/common.h | 2 | ||||
| -rw-r--r-- | libavutil/frame.c | 2 | ||||
| -rw-r--r-- | libavutil/imgutils.c | 2 |
3 files changed, 4 insertions, 2 deletions
diff --git a/libavutil/common.h b/libavutil/common.h index 13f2ffbd11..9091070a01 100644 --- a/libavutil/common.h +++ b/libavutil/common.h @@ -48,6 +48,8 @@ #define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b)) /* assume b>0 */ #define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b)) +/* assume a>0 and b>0 */ +#define FF_CEIL_RSHIFT(a,b) (-((-(a)) >> (b))) #define FFUDIV(a,b) (((a)>0 ?(a):(a)-(b)+1) / (b)) #define FFUMOD(a,b) ((a)-(b)*FFUDIV(a,b)) #define FFABS(a) ((a) >= 0 ? (a) : (-(a))) diff --git a/libavutil/frame.c b/libavutil/frame.c index ca6814ce27..d50e9b2569 100644 --- a/libavutil/frame.c +++ b/libavutil/frame.c @@ -138,7 +138,7 @@ static int get_video_buffer(AVFrame *frame, int align) for (i = 0; i < 4 && frame->linesize[i]; i++) { int h = FFALIGN(frame->height, 32); if (i == 1 || i == 2) - h = -((-h) >> desc->log2_chroma_h); + h = FF_CEIL_RSHIFT(h, desc->log2_chroma_h); frame->buf[i] = av_buffer_alloc(frame->linesize[i] * h + 16); if (!frame->buf[i]) diff --git a/libavutil/imgutils.c b/libavutil/imgutils.c index 3060b0705f..45d8ebe7df 100644 --- a/libavutil/imgutils.c +++ b/libavutil/imgutils.c @@ -284,7 +284,7 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], return; } if (i == 1 || i == 2) { - h= -((-height)>>desc->log2_chroma_h); + h = FF_CEIL_RSHIFT(height, desc->log2_chroma_h); } av_image_copy_plane(dst_data[i], dst_linesizes[i], src_data[i], src_linesizes[i], |