hlssink3: Allow adding EXT-X-PROGRAM-DATE-TIME tag.

- connect to `format-location-full` it provide the first
sample of the fragment. preserve the running-time of the
first sample in fragment.
- on fragment-close message, find the mapping of running-time
to UTC time.
- on each subsequent fragment, calculate the offset of the
running-time with first fragment and add offset to base
utc time

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1145>

1 files changed, 12 insertions, 0 deletions

diff --git a/docs/plugins/gst_plugins_cache.json b/docs/plugins/gst_plugins_cache.json
index e9959de28..bb6dfbf41 100644
--- a/docs/plugins/gst_plugins_cache.json
+++ b/docs/plugins/gst_plugins_cache.json
@@ -2186,6 +2186,18 @@
                     }
                 },
                 "properties": {
+                    "enable-program-date-time": {
+                        "blurb": "put EXT-X-PROGRAM-DATE-TIME tag in the playlist",
+                        "conditionally-available": false,
+                        "construct": false,
+                        "construct-only": false,
+                        "controllable": false,
+                        "default": "false",
+                        "mutable": "null",
+                        "readable": true,
+                        "type": "gboolean",
+                        "writable": true
+                    },
                     "i-frames-only": {
                         "blurb": "Each video segments is single iframe, So put EXT-X-I-FRAMES-ONLY tag in the playlist",
                         "conditionally-available": false,