ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Aug 3 01:49:55 2019 +0200| [cd460f4da04c05d6ba93ccbbe294e948768f0937] | committer: Michael Niedermayer
avcodec/hnm4video: Optimize postprocess_current_frame() Improves: Timeout (220sec -> 108sec) Improves: 15570/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HNM4_VIDEO_fuzzer-5085482213441536 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Tomas Härdin <tjop...@acc.umu.se> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cd460f4da04c05d6ba93ccbbe294e948768f0937 --- libavcodec/hnm4video.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/libavcodec/hnm4video.c b/libavcodec/hnm4video.c index 95a284065e..177ce1d47a 100644 --- a/libavcodec/hnm4video.c +++ b/libavcodec/hnm4video.c @@ -117,14 +117,17 @@ static void unpack_intraframe(AVCodecContext *avctx, uint8_t *src, static void postprocess_current_frame(AVCodecContext *avctx) { Hnm4VideoContext *hnm = avctx->priv_data; - uint32_t x, y, src_x, src_y; + uint32_t x, y, src_y; + int width = hnm->width; for (y = 0; y < hnm->height; y++) { + uint8_t *dst = hnm->processed + y * width; + const uint8_t *src = hnm->current; src_y = y - (y % 2); - src_x = src_y * hnm->width + (y % 2); - for (x = 0; x < hnm->width; x++) { - hnm->processed[(y * hnm->width) + x] = hnm->current[src_x]; - src_x += 2; + src += src_y * width + (y % 2); + for (x = 0; x < width; x++) { + dst[x] = *src; + src += 2; } } } _______________________________________________ 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".
