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| author | Stefano Sabatini <stefasab@gmail.com> | 2012-08-29 13:08:49 +0200 |
|---|---|---|
| committer | Stefano Sabatini <stefasab@gmail.com> | 2012-08-31 16:04:12 +0200 |
| commit | 6c0107822d3ed7588fa857c3ed1ee886b4ba62e9 (patch) | |
| tree | 8cbc085e93ba0b74a8af64c316a56ed1d01bcfee | |
| parent | e64b941dbce5aa5500abdf58c1d2d4e5e13b7b30 (diff) | |
| download | ffmpeg-6c0107822d3ed7588fa857c3ed1ee886b4ba62e9.tar.gz | |
lavfi/mp=decimate: fix off-by-one logic in diff_C() x loop
Set x offset values in the range 0-7, rather than in the range 8-1.
The y loop is changed accordingly, to avoid confusion.
This also fixes output difference with the new pending native decimate
filter.
| -rw-r--r-- | libavfilter/libmpcodecs/vf_decimate.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavfilter/libmpcodecs/vf_decimate.c b/libavfilter/libmpcodecs/vf_decimate.c index 1fd7bce3d3..2d2aaf0abd 100644 --- a/libavfilter/libmpcodecs/vf_decimate.c +++ b/libavfilter/libmpcodecs/vf_decimate.c @@ -82,8 +82,8 @@ static int diff_MMX(unsigned char *old, unsigned char *new, int os, int ns) static int diff_C(unsigned char *old, unsigned char *new, int os, int ns) { int x, y, d=0; - for (y = 8; y; y--) { - for (x = 8; x; x--) { + for (y = 0; y < 8; y++) { + for (x = 0; x < 8; x++) { d += abs(new[x] - old[x]); } new += ns; |