On Tue, Jul 30, 2019 at 2:12 AM Michael Niedermayer <mich...@niedermayer.cc> wrote:
> This makes the changed code-path faster. > > Change not tested except with the fuzzer testcase as I found no other > testcase. > You can test this easily be encoding solid color frame(s). > Improves: Timeout (136sec -> 74sec) > Improves: > 16040/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5705876062601216 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > --- > libavcodec/scpr.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/libavcodec/scpr.c b/libavcodec/scpr.c > index 317950dafb..778b064841 100644 > --- a/libavcodec/scpr.c > +++ b/libavcodec/scpr.c > @@ -548,9 +548,8 @@ static int decode_frame(AVCodecContext *avctx, void > *data, int *got_frame, > clr = bytestream2_get_le24(gb); > } > for (y = 0; y < avctx->height; y++) { > - for (x = 0; x < avctx->width; x++) { > - dst[x] = clr; > - } > + dst[0] = clr; > + av_memcpy_backptr(dst+1, 4, 4*avctx->width - 4); > dst += s->current_frame->linesize[0] / 4; > } > } else if (type == 0 || type == 1) { > -- > 2.22.0 > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
