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 Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/scpr.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/libavcodec/scpr.c b/libavcodec/scpr.c index 37fbe7a106..2ef63a7bf8 100644 --- a/libavcodec/scpr.c +++ b/libavcodec/scpr.c @@ -827,7 +827,16 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, return ret; for (y = 0; y < avctx->height; y++) { - for (x = 0; x < avctx->width * 4; x++) { + 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]; -- 2.14.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
