diff options
author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-08-02 01:14:39 +0400 |
---|---|---|
committer | Justin Ruggles <justin.ruggles@gmail.com> | 2013-01-09 23:49:06 +0400 |
commit | 7040e479a1530b2eda4b89a182d5eb50a77bd907 (patch) | |
tree | 590088bde91481e6d2fa8d53869b23208a1b70cd /libavformat/idcin.c | |
parent | 49543373f3e5871fe91e46b351d29e8f79441efc (diff) |
idcin: allow seeking back to the first packet
Also, do not allow seek-by-byte, as there is no way to find the next packet
boundary.
Diffstat (limited to 'libavformat/idcin.c')
-rw-r--r-- | libavformat/idcin.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/libavformat/idcin.c b/libavformat/idcin.c index 122fd8ebe4..7a0042b4a1 100644 --- a/libavformat/idcin.c +++ b/libavformat/idcin.c @@ -88,6 +88,7 @@ typedef struct IdcinDemuxContext { int current_audio_chunk; int next_chunk_is_video; int audio_present; + int64_t first_pkt_pos; } IdcinDemuxContext; static int idcin_probe(AVProbeData *p) @@ -230,6 +231,7 @@ static int idcin_read_header(AVFormatContext *s) } idcin->next_chunk_is_video = 1; + idcin->first_pkt_pos = avio_tell(s->pb); return 0; } @@ -315,6 +317,23 @@ static int idcin_read_packet(AVFormatContext *s, return ret; } +static int idcin_read_seek(AVFormatContext *s, int stream_index, + int64_t timestamp, int flags) +{ + IdcinDemuxContext *idcin = s->priv_data; + + if (idcin->first_pkt_pos > 0) { + int ret = avio_seek(s->pb, idcin->first_pkt_pos, SEEK_SET); + if (ret < 0) + return ret; + ff_update_cur_dts(s, s->streams[idcin->video_stream_index], 0); + idcin->next_chunk_is_video = 1; + idcin->current_audio_chunk = 0; + return 0; + } + return -1; +} + AVInputFormat ff_idcin_demuxer = { .name = "idcin", .long_name = NULL_IF_CONFIG_SMALL("id Cinematic"), @@ -322,4 +341,6 @@ AVInputFormat ff_idcin_demuxer = { .read_probe = idcin_probe, .read_header = idcin_read_header, .read_packet = idcin_read_packet, + .read_seek = idcin_read_seek, + .flags = AVFMT_NO_BYTE_SEEK, }; |