[FFmpeg-cvslog] avcodec/ffv1enc: Allocate smaller packet if the worst case size cannot be allocated

Michael Niedermayer git at videolan.org
Wed Feb 8 22:38:05 EET 2017


ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Thu Dec  8 23:51:45 2016 +0100| [774461ea629a18258ba45a707dbdc35b17d9b298] | committer: Michael Niedermayer

avcodec/ffv1enc: Allocate smaller packet if the worst case size cannot be allocated

We are checking during encoding if there is enough space as version 4 needs that
check.

Fixes Ticket6005

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 38a7834bbb24ef62466b076715e0add60e1d6962)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=774461ea629a18258ba45a707dbdc35b17d9b298
---

 libavcodec/ffv1enc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 9d02be7..3b425d6 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -1247,6 +1247,11 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     if (f->version > 3)
         maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
 
+    if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
+        av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
+        maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
+    }
+
     if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
         return ret;
 



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