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avformat/3dostr: Return directly after having read packet 

Avoids an avio_skip(s->pb, 0).

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-07-27 05:19:18 +02:00
parent becfdaaa09
commit edcd7c735c
1 changed files with 4 additions and 9 deletions
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13
libavformat/3dostr.c
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@ -110,15 +110,12 @@ static int threedostr_read_header(AVFormatContext *s)
static int threedostr_read_packet(AVFormatContext *s, AVPacket *pkt)
{
unsigned chunk, size, found_ssmp = 0;
unsigned chunk, size;
AVStream *st = s->streams[0];
int64_t pos;
int ret = 0;
while (!found_ssmp) {
if (avio_feof(s->pb))
return AVERROR_EOF;
while (!avio_feof(s->pb)) {
pos = avio_tell(s->pb);
chunk = avio_rl32(s->pb);
size = avio_rb32(s->pb);
@ -143,9 +140,7 @@ static int threedostr_read_packet(AVFormatContext *s, AVPacket *pkt)
pkt->pos = pos;
pkt->stream_index = 0;
pkt->duration = size / st->codecpar->channels;
size = 0;
found_ssmp = 1;
break;
return ret;
default:
av_log(s, AV_LOG_DEBUG, "skipping unknown chunk: %X\n", chunk);
break;
@ -154,7 +149,7 @@ static int threedostr_read_packet(AVFormatContext *s, AVPacket *pkt)
avio_skip(s->pb, size);
}
return ret;
return AVERROR_EOF;
}
AVInputFormat ff_threedostr_demuxer = {