Exemplo n.º 1
0
static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCContext *s, int size)
{
    uint32_t country_code;
    uint32_t user_identifier;

    GetBitContext *gb = &s->HEVClc->gb;

    if (size < 7)
        return AVERROR(EINVAL);
    size -= 7;

    country_code = get_bits(gb, 8);
    if (country_code == 0xFF) {
        skip_bits(gb, 8);
        size--;
    }

    skip_bits(gb, 8);
    skip_bits(gb, 8);

    user_identifier = get_bits_long(gb, 32);

    switch (user_identifier) {
        case MKBETAG('G', 'A', '9', '4'):
            return decode_registered_user_data_closed_caption(s, size);
        default:
            skip_bits_long(gb, size * 8);
            break;
    }
    return 0;
}
Exemplo n.º 2
0
static int decode_registered_user_data(H264SEIContext *h, GetBitContext *gb,
                                       void *logctx, int size)
{
    uint32_t country_code;
    uint32_t user_identifier;

    if (size < 7)
        return AVERROR_INVALIDDATA;
    size -= 7;

    country_code = get_bits(gb, 8); // itu_t_t35_country_code
    if (country_code == 0xFF) {
        skip_bits(gb, 8);           // itu_t_t35_country_code_extension_byte
        size--;
    }

    /* itu_t_t35_payload_byte follows */
    skip_bits(gb, 8);              // terminal provider code
    skip_bits(gb, 8);              // terminal provider oriented code
    user_identifier = get_bits_long(gb, 32);

    switch (user_identifier) {
        case MKBETAG('D', 'T', 'G', '1'):       // afd_data
            return decode_registered_user_data_afd(&h->afd, gb, size);
        case MKBETAG('G', 'A', '9', '4'):       // closed captions
            return decode_registered_user_data_closed_caption(&h->a53_caption, gb,
                                                              logctx, size);
        default:
            skip_bits(gb, size * 8);
            break;
    }

    return 0;
}