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fix probe buffer issue. patch by Wolfram Gloger {wmglo at dent.med.uni-muenchen.de}. 

[FFmpeg-devel] [PATCH] ac3_probe input buffer overrun
Aug 28, 2007

Originally committed as revision 10281 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Wolfram Gloger 2007-09-03 05:19:59 +00:00 committed by Justin Ruggles
parent da0b94f539
commit 9be5181587
1 changed files with 3 additions and 1 deletions
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4
libavformat/utils.c
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@ -445,6 +445,7 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
/* read probe data */
pd->buf= av_realloc(pd->buf, probe_size + AVPROBE_PADDING_SIZE);
pd->buf_size = get_buffer(pb, pd->buf, probe_size);
memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
if (url_fseek(pb, 0, SEEK_SET) < 0) {
url_fclose(pb);
if (url_fopen(pb, filename, URL_RDONLY) < 0) {
@ -1866,9 +1867,10 @@ int av_find_stream_info(AVFormatContext *ic)
if (st->codec->codec_id == CODEC_ID_NONE) {
AVProbeData *pd = &(probe_data[st->index]);
pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size);
pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
pd->buf_size += pkt->size;
memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
}
}
if(st->parser && st->parser->parser->split && !st->codec->extradata){