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wavenc: fix curruption of metadata 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-30 21:48:39 +01:00
parent 2f84f13806
commit f7a9a99661
1 changed files with 5 additions and 4 deletions
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9
libavformat/wavenc.c
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@ -36,6 +36,7 @@
typedef struct WAVMuxContext {
const AVClass *class;
int64_t data;
int64_t fact_pos;
int64_t minpts;
int64_t maxpts;
int last_duration;
@ -100,7 +101,7 @@ static int wav_write_header(AVFormatContext *s)
{
WAVMuxContext *wav = s->priv_data;
AVIOContext *pb = s->pb;
int64_t fmt, fact;
int64_t fmt;
ffio_wfourcc(pb, "RIFF");
avio_wl32(pb, 0); /* file length */
@ -117,9 +118,9 @@ static int wav_write_header(AVFormatContext *s)
if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */
&& s->pb->seekable) {
fact = ff_start_tag(pb, "fact");
wav->fact_pos = ff_start_tag(pb, "fact");
avio_wl32(pb, 0);
ff_end_tag(pb, fact);
ff_end_tag(pb, wav->fact_pos);
}
if (wav->write_bext)
@ -179,7 +180,7 @@ static int wav_write_trailer(AVFormatContext *s)
number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num,
s->streams[0]->time_base.den);
avio_seek(pb, wav->data-12, SEEK_SET);
avio_seek(pb, wav->fact_pos, SEEK_SET);
avio_wl32(pb, number_of_samples);
avio_seek(pb, file_size, SEEK_SET);
avio_flush(pb);