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wtv: do not repopulate codec information after we have seen data chunks 

Originally committed as revision 26276 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Peter Ross 2011-01-09 02:35:06 +00:00
parent bf2e54174e
commit a5a36a7970
1 changed files with 11 additions and 1 deletions
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12
libavformat/wtv.c
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@ -37,6 +37,10 @@
#define ARG_GUID(g) \
g[0],g[1],g[2],g[3],g[4],g[5],g[6],g[7],g[8],g[9],g[10],g[11],g[12],g[13],g[14],g[15]
typedef struct {
int seen_data;
} WtvStream;
typedef struct WtvContext {
uint64_t pts;
} WtvContext;
@ -207,9 +211,13 @@ static AVStream * new_stream(AVFormatContext *s, AVStream *st, int sid, int code
st->codec->extradata_size = 0;
}
} else {
WtvStream *wst = av_mallocz(sizeof(WtvStream));
if (!wst)
return NULL;
st = av_new_stream(s, sid);
if (!st)
return NULL;
st->priv_data = wst;
}
st->codec->codec_type = codec_type;
st->need_parsing = AVSTREAM_PARSE_FULL;
@ -388,7 +396,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
}
} else if (!ff_guidcmp(g, stream2_guid)) {
int stream_index = ff_find_stream_index(s, sid);
if (stream_index >= 0) {
if (stream_index >= 0 && !((WtvStream*)s->streams[stream_index]->priv_data)->seen_data) {
ff_asf_guid mediatype, subtype, formattype;
int size;
url_fskip(pb, 12);
@ -461,6 +469,8 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
} else if (!ff_guidcmp(g, data_guid)) {
int stream_index = ff_find_stream_index(s, sid);
if (mode == SEEK_TO_DATA && stream_index >= 0) {
WtvStream *wst = s->streams[stream_index]->priv_data;
wst->seen_data = 1;
if (len_ptr) {
*len_ptr = len;
}