Message ID | AS8P250MB0744CC369A3887A6A38474498FC7A@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM |
---|---|
State | Accepted |
Commit | 3ede6cc0f18c3da842d18153b860d911bdbfbde9 |
Headers | show |
Series | [FFmpeg-devel,1/4] avcodec/mpegvideo_dec: Check for existence of planes before accesses | expand |
Context | Check | Description |
---|---|---|
yinshiyou/make_loongarch64 | success | Make finished |
yinshiyou/make_fate_loongarch64 | success | Make fate finished |
andriy/make_x86 | success | Make finished |
andriy/make_fate_x86 | success | Make fate finished |
Andreas Rheinhardt: > Fixes segfaults with -debug +nomc -flags +gray (presuming > a build with --enable-gray). > > Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> > --- > libavcodec/mpegvideo_dec.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/libavcodec/mpegvideo_dec.c b/libavcodec/mpegvideo_dec.c > index 7aa46a4e25..77d90104f6 100644 > --- a/libavcodec/mpegvideo_dec.c > +++ b/libavcodec/mpegvideo_dec.c > @@ -249,10 +249,12 @@ static void gray_frame(AVFrame *frame) > { > int h_chroma_shift, v_chroma_shift; > > - av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift); > - > for (int i = 0; i < frame->height; i++) > memset(frame->data[0] + frame->linesize[0] * i, 0x80, frame->width); > + > + if (!frame->data[1]) > + return; > + av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift); > for (int i = 0; i < AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) { > memset(frame->data[1] + frame->linesize[1] * i, > 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift)); Will apply patches one, two and four of this patchset tonight unless there are objections. - Andreas
diff --git a/libavcodec/mpegvideo_dec.c b/libavcodec/mpegvideo_dec.c index 7aa46a4e25..77d90104f6 100644 --- a/libavcodec/mpegvideo_dec.c +++ b/libavcodec/mpegvideo_dec.c @@ -249,10 +249,12 @@ static void gray_frame(AVFrame *frame) { int h_chroma_shift, v_chroma_shift; - av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift); - for (int i = 0; i < frame->height; i++) memset(frame->data[0] + frame->linesize[0] * i, 0x80, frame->width); + + if (!frame->data[1]) + return; + av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift); for (int i = 0; i < AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) { memset(frame->data[1] + frame->linesize[1] * i, 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
Fixes segfaults with -debug +nomc -flags +gray (presuming a build with --enable-gray). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> --- libavcodec/mpegvideo_dec.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)