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replace the auto array "duration_error" with a malloced array.

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prevents stack overflow on some plateforms
patch by Kristian Amlie %kristian A gridmedia P com %
Original thread:
Date: Mar 1, 2007 11:29 PM
Subject: [Ffmpeg-devel] Stack overflow patch

Originally committed as revision 8194 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kristian Amlie 2007-03-02 13:23:06 +00:00 committed by Guillaume Poirier
parent 57d4d6e733
commit 0cbff0275b
1 changed files with 8 additions and 2 deletions
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10
libavformat/utils.c
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@ -1814,9 +1814,12 @@ int av_find_stream_info(AVFormatContext *ic)
AVPacketList *pktl=NULL, **ppktl;
int64_t last_dts[MAX_STREAMS];
int duration_count[MAX_STREAMS]={0};
double duration_error[MAX_STREAMS][MAX_STD_TIMEBASES]={{0}}; //FIXME malloc()?
double (*duration_error)[MAX_STD_TIMEBASES];
offset_t old_offset = url_ftell(&ic->pb);
duration_error = av_mallocz(MAX_STREAMS * sizeof(*duration_error));
if (!duration_error) return AVERROR_NOMEM;
for(i=0;i<ic->nb_streams;i++) {
st = ic->streams[i];
if(st->codec->codec_type == CODEC_TYPE_VIDEO){
@ -1927,7 +1930,7 @@ int av_find_stream_info(AVFormatContext *ic)
// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
// av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
if(duration_count[index] < 2)
memset(duration_error, 0, sizeof(duration_error));
memset(duration_error, 0, MAX_STREAMS * sizeof(*duration_error));
for(i=1; i<MAX_STD_TIMEBASES; i++){
int framerate= get_std_framerate(i);
int ticks= lrintf(dur*framerate/(1001*12));
@ -2050,6 +2053,9 @@ int av_find_stream_info(AVFormatContext *ic)
}
}
#endif
av_free(duration_error);
return ret;
}