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[yop] Check return value of avio_seek and avoid modifying state if it fails

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This commit is contained in:
Joakim Plate 2011-09-14 19:43:38 +02:00
parent 7bcd81299a
commit 5d70536804
1 changed files with 5 additions and 3 deletions
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8
libavformat/yop.c
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@ -183,8 +183,6 @@ static int yop_read_seek(AVFormatContext *s, int stream_index,
int64_t frame_pos, pos_min, pos_max; int64_t frame_pos, pos_min, pos_max;
int frame_count; int frame_count;
av_free_packet(&yop->video_packet);
if (!stream_index) if (!stream_index)
return -1; return -1;
@ -195,9 +193,13 @@ static int yop_read_seek(AVFormatContext *s, int stream_index,
timestamp = FFMAX(0, FFMIN(frame_count, timestamp)); timestamp = FFMAX(0, FFMIN(frame_count, timestamp));
frame_pos = timestamp * yop->frame_size + pos_min; frame_pos = timestamp * yop->frame_size + pos_min;
if (avio_seek(s->pb, frame_pos, SEEK_SET) < 0)
return -1;
av_free_packet(&yop->video_packet);
yop->odd_frame = timestamp & 1; yop->odd_frame = timestamp & 1;
avio_seek(s->pb, frame_pos, SEEK_SET);
return 0; return 0;
} }