typedef enum {
SEI_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
SEI_TYPE_PIC_TIMING = 1, ///< picture timing
+ SEI_TYPE_USER_DATA_ITU_T_T35 = 4, ///< user data registered by ITU-T Recommendation T.35
SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
SEI_TYPE_RECOVERY_POINT = 6 ///< recovery point (frame # to decoder sync)
} SEI_Type;
return 0;
}
+static int decode_user_data_itu_t_t35(H264Context *h, int size) {
+ MpegEncContext * const s = &h->s;
+ uint32_t user_identifier;
+ int dtg_active_format;
+
+ if (size < 7)
+ return -1;
+ size -= 7;
+
+ skip_bits(&s->gb, 8); // country_code
+ skip_bits(&s->gb, 16); // provider_code
+ user_identifier = get_bits_long(&s->gb, 32);
+
+ switch (user_identifier) {
+ case 0x44544731: // "DTG1" - AFD_data
+ if (size < 1)
+ return -1;
+ skip_bits(&s->gb, 1);
+ if (get_bits(&s->gb, 1)) {
+ skip_bits(&s->gb, 6);
+ if (size < 2)
+ return -1;
+ skip_bits(&s->gb, 4);
+ dtg_active_format = get_bits(&s->gb, 4);
+ s->avctx->dtg_active_format = dtg_active_format;
+ } else {
+ skip_bits(&s->gb, 6);
+ }
+ break;
+ default:
+ skip_bits(&s->gb, size * 8);
+ break;
+ }
+
+ return 0;
+}
+
static int decode_unregistered_user_data(H264Context *h, int size){
MpegEncContext * const s = &h->s;
uint8_t user_data[16+256];
if(decode_picture_timing(h) < 0)
return -1;
break;
+ case SEI_TYPE_USER_DATA_ITU_T_T35:
+ if(decode_user_data_itu_t_t35(h, size) < 0)
+ return -1;
+ break;
case SEI_TYPE_USER_DATA_UNREGISTERED:
if(decode_unregistered_user_data(h, size) < 0)
return -1;