- user_data_type_code = get_bits(gb, 8);
- if (user_data_type_code == 0x3) {
- skip_bits(gb, 1); // reserved
-
- flag = get_bits(gb, 1); // process_cc_data_flag
- if (flag) {
- skip_bits(gb, 1); // zero bit
- cc_count = get_bits(gb, 5);
- skip_bits(gb, 8); // reserved
- size -= 2;
-
- if (cc_count && size >= cc_count * 3) {
- int old_size = h->buf_ref ? h->buf_ref->size : 0;
- const uint64_t new_size = (old_size + cc_count
- * UINT64_C(3));
- int i, ret;
-
- if (new_size > INT_MAX)
- return AVERROR(EINVAL);
-
- /* Allow merging of the cc data from two fields. */
- ret = av_buffer_realloc(&h->buf_ref, new_size);
- if (ret < 0)
- return ret;
-
- /* Use of av_buffer_realloc assumes buffer is writeable */
- for (i = 0; i < cc_count; i++) {
- h->buf_ref->data[old_size++] = get_bits(gb, 8);
- h->buf_ref->data[old_size++] = get_bits(gb, 8);
- h->buf_ref->data[old_size++] = get_bits(gb, 8);
- }
-
- skip_bits(gb, 8); // marker_bits
- }
- }
- } else {
- int i;
- for (i = 0; i < size - 1; i++)
- skip_bits(gb, 8);
- }
-
- return 0;