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segafilm: implement seeking

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Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This commit is contained in:
Paul B Mahol 2015-11-05 12:04:51 +01:00 committed by Vittorio Giovara
parent 2ec112f71c
commit c012c6f1a8
1 changed files with 23 additions and 0 deletions
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23
libavformat/segafilm.c
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@ -240,6 +240,11 @@ static int film_read_header(AVFormatContext *s)
film->sample_table[i].stream = film->video_stream_index; film->sample_table[i].stream = film->video_stream_index;
film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF; film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;
film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1; film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1;
av_add_index_entry(s->streams[film->video_stream_index],
film->sample_table[i].sample_offset,
film->sample_table[i].pts,
film->sample_table[i].sample_size, 0,
film->sample_table[i].keyframe);
} }
} }
@ -288,6 +293,23 @@ static int film_read_packet(AVFormatContext *s,
return ret; return ret;
} }
static int film_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
{
FilmDemuxContext *film = s->priv_data;
AVStream *st = s->streams[stream_index];
int ret = av_index_search_timestamp(st, timestamp, flags);
if (ret < 0)
return ret;
ret = avio_seek(s->pb, st->index_entries[ret].pos, SEEK_SET);
if (ret < 0)
return ret;
film->current_sample = ret;
return 0;
}
AVInputFormat ff_segafilm_demuxer = { AVInputFormat ff_segafilm_demuxer = {
.name = "film_cpk", .name = "film_cpk",
.long_name = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"), .long_name = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),
@ -296,4 +318,5 @@ AVInputFormat ff_segafilm_demuxer = {
.read_header = film_read_header, .read_header = film_read_header,
.read_packet = film_read_packet, .read_packet = film_read_packet,
.read_close = film_read_close, .read_close = film_read_close,
.read_seek = film_read_seek,
}; };