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avfilter/vf_removegrain: clip to uint16 instead to uint8 

This is how original filter behaves.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-07-10 10:45:51 +00:00
parent 7b404c94f3
commit ae55fc82a8
3 changed files with 10 additions and 10 deletions
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16
libavfilter/vf_removegrain.c
View File

@ -167,10 +167,10 @@ static int mode06(int c, int a1, int a2, int a3, int a4, int a5, int a6, int a7,
const int cli3 = av_clip(c, mi3, ma3);
const int cli4 = av_clip(c, mi4, ma4);
const int c1 = av_clip_uint8((FFABS(c - cli1) << 1) + d1);
const int c2 = av_clip_uint8((FFABS(c - cli2) << 1) + d2);
const int c3 = av_clip_uint8((FFABS(c - cli3) << 1) + d3);
const int c4 = av_clip_uint8((FFABS(c - cli4) << 1) + d4);
const int c1 = av_clip_uint16((FFABS(c - cli1) << 1) + d1);
const int c2 = av_clip_uint16((FFABS(c - cli2) << 1) + d2);
const int c3 = av_clip_uint16((FFABS(c - cli3) << 1) + d3);
const int c4 = av_clip_uint16((FFABS(c - cli4) << 1) + d4);
const int mindiff = FFMIN(FFMIN(c1, c2), FFMIN(c3, c4));
@ -231,10 +231,10 @@ static int mode08(int c, int a1, int a2, int a3, int a4, int a5, int a6, int a7,
const int cli3 = av_clip(c, mi3, ma3);
const int cli4 = av_clip(c, mi4, ma4);
const int c1 = av_clip_uint8(FFABS(c - cli1) + (d1 << 1));
const int c2 = av_clip_uint8(FFABS(c - cli2) + (d2 << 1));
const int c3 = av_clip_uint8(FFABS(c - cli3) + (d3 << 1));
const int c4 = av_clip_uint8(FFABS(c - cli4) + (d4 << 1));
const int c1 = av_clip_uint16(FFABS(c - cli1) + (d1 << 1));
const int c2 = av_clip_uint16(FFABS(c - cli2) + (d2 << 1));
const int c3 = av_clip_uint16(FFABS(c - cli3) + (d3 << 1));
const int c4 = av_clip_uint16(FFABS(c - cli4) + (d4 << 1));
const int mindiff = FFMIN(FFMIN(c1, c2), FFMIN(c3, c4));

2
tests/ref/fate/filter-removegrain-mode-06
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@ -1,2 +1,2 @@
#tb 0: 1/25
0, 0, 0, 1, 152064, 0x19a63f92
0, 0, 0, 1, 152064, 0x38e84065

2
tests/ref/fate/filter-removegrain-mode-08
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@ -1,2 +1,2 @@
#tb 0: 1/25
0, 0, 0, 1, 152064, 0x820d85aa
0, 0, 0, 1, 152064, 0x8f7c85a2