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Fix audio corruption when cutting. 

Patch by Wolfram Gloger, wmglo dent dot med dot uni-muenchen dot de.

Originally committed as revision 7818 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Wolfram Gloger 2007-02-05 02:08:57 +00:00 committed by Panagiotis Issaris
parent 42572ef53f
commit 9ecf7fada3
1 changed files with 10 additions and 7 deletions
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17
libavformat/utils.c
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@ -1558,7 +1558,7 @@ static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
#define DURATION_MAX_READ_SIZE 250000
/* only usable for MPEG-PS streams */
static void av_estimate_timings_from_pts(AVFormatContext *ic)
static void av_estimate_timings_from_pts(AVFormatContext *ic, offset_t old_offset)
{
AVPacket pkt1, *pkt = &pkt1;
AVStream *st;
@ -1650,10 +1650,10 @@ static void av_estimate_timings_from_pts(AVFormatContext *ic)
fill_all_stream_timings(ic);
url_fseek(&ic->pb, 0, SEEK_SET);
url_fseek(&ic->pb, old_offset, SEEK_SET);
}
static void av_estimate_timings(AVFormatContext *ic)
static void av_estimate_timings(AVFormatContext *ic, offset_t old_offset)
{
int64_t file_size;
@ -1671,7 +1671,7 @@ static void av_estimate_timings(AVFormatContext *ic)
!strcmp(ic->iformat->name, "mpegts")) &&
file_size && !ic->pb.is_streamed) {
/* get accurate estimate from the PTSes */
av_estimate_timings_from_pts(ic);
av_estimate_timings_from_pts(ic, old_offset);
} else if (av_has_timings(ic)) {
/* at least one components has timings - we use them for all
the components */
@ -1765,10 +1765,12 @@ static int get_std_framerate(int i){
}
/**
* Read the beginning of a media file to get stream information. This
* Read packets of a media file to get stream information. This
* is useful for file formats with no headers such as MPEG. This
* function also compute the real frame rate in case of mpeg2 repeat
* function also computes the real frame rate in case of mpeg2 repeat
* frame mode.
* The logical file position is not changed by this function;
* examined packets may be buffered for later processing.
*
* @param ic media file handle
* @return >=0 if OK. AVERROR_xxx if error.
@ -1783,6 +1785,7 @@ int av_find_stream_info(AVFormatContext *ic)
int64_t last_dts[MAX_STREAMS];
int duration_count[MAX_STREAMS]={0};
double duration_error[MAX_STREAMS][MAX_STD_TIMEBASES]={{0}}; //FIXME malloc()?
offset_t old_offset = url_ftell(&ic->pb);
for(i=0;i<ic->nb_streams;i++) {
st = ic->streams[i];
@ -1989,7 +1992,7 @@ int av_find_stream_info(AVFormatContext *ic)
}
}
av_estimate_timings(ic);
av_estimate_timings(ic, old_offset);
#if 0
/* correct DTS for b frame streams with no timestamps */
for(i=0;i<ic->nb_streams;i++) {