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avformat/flvenc: Check audio packet size 

Fixes: Assertion failure
Fixes: assert_flvenc.c:941_1.swf

Found-by: #CHEN HONGXU# <HCHEN017@e.ntu.edu.sg>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-07-28 15:03:50 +02:00
parent 476fd6ba3a
commit 6b67d7f059
1 changed files with 5 additions and 0 deletions
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5
libavformat/flvenc.c
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@ -883,6 +883,11 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
int flags = -1, flags_size, ret;
int64_t cur_offset = avio_tell(pb);
if (par->codec_type == AVMEDIA_TYPE_AUDIO && !pkt->size) {
av_log(s, AV_LOG_WARNING, "Empty audio Packet\n");
return AVERROR(EINVAL);
}
if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A ||
par->codec_id == AV_CODEC_ID_VP6 || par->codec_id == AV_CODEC_ID_AAC)
flags_size = 2;