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ape: provide two additional bytes in buffer for old MAC versions

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Range coder in 3.90-3.95 overread two bytes in the final normalize.
This commit is contained in:
Kostya Shishkov 2013-03-12 07:17:03 +01:00
parent b164d66e35
commit 9652d4fcfc
1 changed files with 3 additions and 1 deletions
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4
libavcodec/apedec.c
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@ -917,11 +917,13 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
av_log(avctx, AV_LOG_WARNING, "packet size is not a multiple of 4. "
"extra bytes at the end will be skipped.\n");
}
if (s->fileversion < 3950) // previous versions overread two bytes
buf_size += 2;
av_fast_malloc(&s->data, &s->data_size, buf_size);
if (!s->data)
return AVERROR(ENOMEM);
s->dsp.bswap_buf((uint32_t*)s->data, (const uint32_t*)buf, buf_size >> 2);
memset(s->data + (buf_size & ~3), 0, buf_size & 3);
s->ptr = s->data;
s->data_end = s->data + buf_size;