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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-24 21:46:15 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-24 21:46:15 +0100 |
| commit | b83d8be6bff7d645469a623aee0b380541da15cf (patch) | |
| tree | 9efdc46d2b844fb9195536deb8bf4c502ea2afc6 | |
| parent | 4bec36f98c5150b09d45740f3e1c80526e85b676 (diff) | |
| download | ffmpeg-b83d8be6bff7d645469a623aee0b380541da15cf.tar.gz | |
swscale/utils: Fix intermediate format for cascaded alpha downscaling
Fixes Ticket4926
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libswscale/utils.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c index db937b160f..e5593af4dd 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -1803,6 +1803,9 @@ fail: // FIXME replace things by appropriate error codes int tmpH = sqrt(srcH * (int64_t)dstH); enum AVPixelFormat tmpFormat = AV_PIX_FMT_YUV420P; + if (isALPHA(srcFormat)) + tmpFormat = AV_PIX_FMT_YUVA420P; + if (srcW*(int64_t)srcH <= 4LL*dstW*dstH) return AVERROR(EINVAL); |