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a64: check that extradata exists before reading from it

This commit is contained in:
Anton Khirnov 2014-05-03 10:44:17 +02:00
parent b136564909
commit 3ef6c5264b
1 changed files with 6 additions and 0 deletions
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6
libavformat/a64.c
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@ -35,6 +35,12 @@ static int a64_write_header(AVFormatContext *s)
0x00, //charset_lifetime (multi only)
0x00 //fps in 50/fps;
};
if (avctx->extradata_size < 4) {
av_log(s, AV_LOG_ERROR, "Missing extradata\n");
return AVERROR(EINVAL);
}
switch (avctx->codec->id) {
case AV_CODEC_ID_A64_MULTI:
header[2] = 0x00;