upipe-ts: add SCTE-35 time splice descriptor

Author: quarium

include/upipe-ts/uref_ts_scte35_desc.h

@@ -100,6 +100,14 @@ UREF_ATTR_SMALL_UNSIGNED(ts_scte35_desc_seg, sub_expected,
                          "scte35.desc.seg.sub_expected",
                          sub segment expected);
 
+/* time splice descriptor */
+UREF_ATTR_UNSIGNED(ts_scte35_desc_time, tai_sec, "scte35.desc.time.tai_sec",
+                   seconds part of the TAI);
+UREF_ATTR_UNSIGNED(ts_scte35_desc_time, tai_nsec, "scte35.desc.time.tai_nsec",
+                   nanoseconds part of the TAI);
+UREF_ATTR_UNSIGNED(ts_scte35_desc_time, utc_off, "scte35.desc.time.utc_off",
+                   offset from UTC in seconds);
+
 #ifdef __cplusplus
 }
 #endif

lib/upipe-ts/uref_ts_scte35.c

@@ -278,6 +278,21 @@ struct uref *uref_ts_scte35_extract_desc(struct uref *uref, uint64_t at)
             }
             break;
         }
+
+        case SCTE35_SPLICE_DESC_TAG_TIME: {
+            if (length < SCTE35_TIME_DESC_HEADER_SIZE) {
+                uref_free(out);
+                return NULL;
+            }
+
+            uint64_t tai_sec = scte35_time_desc_get_tai_sec(desc);
+            uint64_t tai_nsec = scte35_time_desc_get_tai_ns(desc);
+            uint64_t utc_off = scte35_time_desc_get_utc_off(desc);
+            uref_ts_scte35_desc_time_set_tai_sec(out, tai_sec);
+            uref_ts_scte35_desc_time_set_tai_nsec(out, tai_nsec);
+            uref_ts_scte35_desc_time_set_utc_off(out, utc_off);
+            break;
+        }
     }
     return out;
 }