Function mpeg4_encode_visual_object_header

libavcodec/mpeg4videoenc.c:905–948

}

static void mpeg4_encode_visual_object_header(MpegEncContext * s){
    int profile_and_level_indication;
    int vo_ver_id;

    if(s->avctx->profile != FF_PROFILE_UNKNOWN){
        profile_and_level_indication = s->avctx->profile << 4;
    }else if(s->max_b_frames || s->quarter_sample){
        profile_and_level_indication= 0xF0; // adv simple
    }else{
        profile_and_level_indication= 0x00; // simple
    }

    if(s->avctx->level != FF_LEVEL_UNKNOWN){
        profile_and_level_indication |= s->avctx->level;
    }else{
        profile_and_level_indication |= 1; //level 1
    }

    if(profile_and_level_indication>>4 == 0xF){
        vo_ver_id= 5;
    }else{
        vo_ver_id= 1;
    }

    //FIXME levels

    put_bits(&s->pb, 16, 0);
    put_bits(&s->pb, 16, VOS_STARTCODE);

    put_bits(&s->pb, 8, profile_and_level_indication);

    put_bits(&s->pb, 16, 0);
    put_bits(&s->pb, 16, VISUAL_OBJ_STARTCODE);

    put_bits(&s->pb, 1, 1);
        put_bits(&s->pb, 4, vo_ver_id);
        put_bits(&s->pb, 3, 1); //priority

    put_bits(&s->pb, 4, 1); //visual obj type== video obj

    put_bits(&s->pb, 1, 0); //video signal type == no clue //FIXME

    ff_mpeg4_stuffing(&s->pb);
}

static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_number)
{