Function dv_extract_timecode

libavformat/dv.c:336–350

}

static int dv_extract_timecode(DVDemuxContext* c, const uint8_t* frame, char *tc)
{
    const uint8_t *tc_pack;

    // For PAL systems, drop frame bit is replaced by an arbitrary
    // bit so its value should not be considered. Drop frame timecode
    // is only relevant for NTSC systems.
    int prevent_df = c->sys->ltc_divisor == 25 || c->sys->ltc_divisor == 50;

    tc_pack = dv_extract_pack(frame, DV_TIMECODE);
    if (!tc_pack)
        return 0;
    av_timecode_make_smpte_tc_string2(tc, av_inv_q(c->sys->time_base), AV_RB32(tc_pack + 1), prevent_df, 1);
    return 1;
}

/* The following 3 functions constitute our interface to the world */