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asfdec: factor out seeking to the Data Object outside while

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return INVALIDDARA if Data Object was not found

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Alexandra Hájková 2015-07-21 09:14:39 +02:00 committed by Anton Khirnov
parent ecee1148af
commit 5655236a67
1 changed files with 10 additions and 7 deletions
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17
libavformat/asfdec.c
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@ -1652,17 +1652,13 @@ static int asf_read_header(AVFormatContext *s)
*/
while (1) {
// for the cases when object size is invalid
if (avio_tell(pb) == asf->offset) {
if (asf->data_reached)
avio_seek(pb, asf->first_packet_offset, SEEK_SET);
if (avio_tell(pb) == asf->offset)
break;
}
asf->offset = avio_tell(pb);
if ((ret = ff_get_guid(pb, &guid)) < 0) {
if (ret == AVERROR_EOF && asf->data_reached) {
avio_seek(pb, asf->first_packet_offset, SEEK_SET);
if (ret == AVERROR_EOF && asf->data_reached)
break;
} else
else
return ret;
}
g = find_guid(guid);
@ -1679,6 +1675,13 @@ static int asf_read_header(AVFormatContext *s)
break;
}
if (!asf->data_reached) {
av_log(s, AV_LOG_ERROR, "Data Object was not found.\n");
return AVERROR_INVALIDDATA;
}
if (pb->seekable)
avio_seek(pb, asf->first_packet_offset, SEEK_SET);
for (i = 0; i < asf->nb_streams; i++) {
const char *rfc1766 = asf->asf_sd[asf->asf_st[i]->lang_idx].langs;
AVStream *st = s->streams[asf->asf_st[i]->index];