Function ff_timecode_set_smpte

libavutil/timecode_internal.c:33–51

}

void ff_timecode_set_smpte(unsigned *drop, unsigned *hh, unsigned *mm, unsigned *ss, unsigned *ff,
                           AVRational rate, uint32_t tcsmpte, int prevent_df, int skip_field)
{
    *hh   = bcd2uint(tcsmpte     & 0x3f);    // 6-bit hours
    *mm   = bcd2uint(tcsmpte>>8  & 0x7f);    // 7-bit minutes
    *ss   = bcd2uint(tcsmpte>>16 & 0x7f);    // 7-bit seconds
    *ff   = bcd2uint(tcsmpte>>24 & 0x3f);    // 6-bit frames
    *drop = tcsmpte & 1<<30 && !prevent_df;  // 1-bit drop if not arbitrary bit

    if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) {
        *ff <<= 1;
        if (!skip_field) {
            if (av_cmp_q(rate, (AVRational) {50, 1}) == 0)
                *ff += !!(tcsmpte & 1 << 7);
            else
                *ff += !!(tcsmpte & 1 << 23);
        }
    }
}