ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue Aug 31 19:48:18 2021 +0200| [31f03120e8d03775c67404af11dc7d5fb90f590c] | committer: Michael Niedermayer
avcodec/pictordec: Optimize more odd cases for picmemset() Fixes: Timeout Fixes: 36875/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PICTOR_fuzzer-4842960888922112 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Tested-by: Peter Ross <pr...@xvid.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=31f03120e8d03775c67404af11dc7d5fb90f590c --- libavcodec/pictordec.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/libavcodec/pictordec.c b/libavcodec/pictordec.c index c37c5e7106..c7b3a335d3 100644 --- a/libavcodec/pictordec.c +++ b/libavcodec/pictordec.c @@ -89,8 +89,7 @@ static void picmemset(PicContext *s, AVFrame *frame, unsigned value, int run, d = frame->data[0] + yl * frame->linesize[0]; if (s->nb_planes == 1 && run*pixels_per_value >= s->width && - pixels_per_value < s->width && - s->width % pixels_per_value == 0 + pixels_per_value < (s->width / pixels_per_value * pixels_per_value) ) { for (; xl < pixels_per_value; xl ++) { j = (j < bits_per_plane ? 8 : j) - bits_per_plane; @@ -98,7 +97,7 @@ static void picmemset(PicContext *s, AVFrame *frame, unsigned value, int run, } av_memcpy_backptr(d+xl, pixels_per_value, s->width - xl); run -= s->width / pixels_per_value; - xl = s->width; + xl = s->width / pixels_per_value * pixels_per_value; } } } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
