Speeds code up from 50sec to 15sec
Fixes Timeout
Fixes: 3242/clusterfuzz-testcase-5811951672229888
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
if (ret < 0)
return ret;
+ // scale up each sample by 8
for (y = 0; y < avctx->height; y++) {
- for (x = 0; x < avctx->width * 4; x++) {
+ // If the image is sufficiently aligned, compute 8 samples at once
+ if (!(((uintptr_t)dst) & 7)) {
+ uint64_t *dst64 = (uint64_t *)dst;
+ int w = avctx->width>>1;
+ for (x = 0; x < w; x++) {
+ dst64[x] = (dst64[x] << 3) & 0xFCFCFCFCFCFCFCFCULL;
+ }
+ x *= 8;
+ } else
+ x = 0;
+ for (; x < avctx->width * 4; x++) {
dst[x] = dst[x] << 3;
}
dst += frame->linesize[0];