virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

libavcodec/vp8: Do not compute line pointers per pixel in fade()

Browse Source 
72->60 seconds
Testcase: 8680/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VP7_fuzzer-5861504418054144

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-06-24 02:50:16 +02:00
parent bcc0ae5d5a
commit 115b7c96e9
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavcodec/vp8.c
View File

@ -492,9 +492,11 @@ static void fade(uint8_t *dst, ptrdiff_t dst_linesize,
{
int i, j;
for (j = 0; j < height; j++) {
const uint8_t *src2 = src + j * src_linesize;
uint8_t *dst2 = dst + j * dst_linesize;
for (i = 0; i < width; i++) {
uint8_t y = src[j * src_linesize + i];
dst[j * dst_linesize + i] = av_clip_uint8(y + ((y * beta) >> 8) + alpha);
uint8_t y = src2[i];
dst2[i] = av_clip_uint8(y + ((y * beta) >> 8) + alpha);
}
}
}