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| author | Michael Niedermayer <michaelni@gmx.at> | 2005-05-17 20:30:22 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2005-05-17 20:30:22 +0000 |
| commit | ee408eadbadbc629c9ef06f62ddf63643defe541 (patch) | |
| tree | 774a413494324670a455f509bf0a7c27ad7788c8 | |
| parent | 0bde73d907dbe684e01bafc979bf4a04ddeace1d (diff) | |
| download | ffmpeg-ee408eadbadbc629c9ef06f62ddf63643defe541.tar.gz | |
SATURATE_U8 -> clip_uint8 (10% faster loop filter)
Originally committed as revision 4262 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/vp3.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 6bf200b9a1..7d4b9e8bec 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -2245,8 +2245,6 @@ av_log(s->avctx, AV_LOG_ERROR, " help! got beefy vector! (%X, %X)\n", motion_x, emms_c(); } -#define SATURATE_U8(x) ((x) < 0) ? 0 : ((x) > 255) ? 255 : x - static void horizontal_filter(unsigned char *first_pixel, int stride, int *bounding_values) { @@ -2260,8 +2258,8 @@ static void horizontal_filter(unsigned char *first_pixel, int stride, (first_pixel[ 0] * 3) - (first_pixel[ 1] * 1); filter_value = bounding_values[(filter_value + 4) >> 3]; - first_pixel[-1] = SATURATE_U8(first_pixel[-1] + filter_value); - first_pixel[ 0] = SATURATE_U8(first_pixel[ 0] - filter_value); + first_pixel[-1] = clip_uint8(first_pixel[-1] + filter_value); + first_pixel[ 0] = clip_uint8(first_pixel[ 0] - filter_value); } } @@ -2278,8 +2276,8 @@ static void vertical_filter(unsigned char *first_pixel, int stride, (first_pixel[ (0 )] * 3) - (first_pixel[ (1 * stride)] * 1); filter_value = bounding_values[(filter_value + 4) >> 3]; - first_pixel[-(1 * stride)] = SATURATE_U8(first_pixel[-(1 * stride)] + filter_value); - first_pixel[0] = SATURATE_U8(first_pixel[0] - filter_value); + first_pixel[-(1 * stride)] = clip_uint8(first_pixel[-(1 * stride)] + filter_value); + first_pixel[0] = clip_uint8(first_pixel[0] - filter_value); } } |