[FFmpeg-cvslog] avcodec/pafvideo: Clear frame buffer later
Michael Niedermayer
git at videolan.org
Tue Jun 4 14:20:28 EEST 2019
ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Fri May 17 22:27:38 2019 +0200| [89836ad5a7a80a353ae3710a00d9708fc6437464] | committer: Michael Niedermayer
avcodec/pafvideo: Clear frame buffer later
This way the clearing can be skipped in case of some errors.
Fixes: Timeout (11sec -> 344ms)
Fixes: 14670/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PAF_VIDEO_fuzzer-5769534503387136
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=89836ad5a7a80a353ae3710a00d9708fc6437464
---
libavcodec/pafvideo.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/libavcodec/pafvideo.c b/libavcodec/pafvideo.c
index 7bfd6815df..323c662c59 100644
--- a/libavcodec/pafvideo.c
+++ b/libavcodec/pafvideo.c
@@ -293,9 +293,6 @@ static int paf_video_decode(AVCodecContext *avctx, void *data,
return ret;
if (code & 0x20) { // frame is keyframe
- for (i = 0; i < 4; i++)
- memset(c->frame[i], 0, c->frame_size);
-
memset(c->pic->data[1], 0, AVPALETTE_SIZE);
c->current_frame = 0;
c->pic->key_frame = 1;
@@ -332,6 +329,10 @@ static int paf_video_decode(AVCodecContext *avctx, void *data,
c->pic->palette_has_changed = 1;
}
+ if (code & 0x20)
+ for (i = 0; i < 4; i++)
+ memset(c->frame[i], 0, c->frame_size);
+
switch (code & 0x0F) {
case 0:
/* Block-based motion compensation using 4x4 blocks with either
More information about the ffmpeg-cvslog
mailing list