webrtc rtptransceiver: Implement "codec-preferences" property

This allows safer access to the internals of the codec-preferences

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2183>

diff --git a/gst-libs/gst/webrtc/rtptransceiver.c b/gst-libs/gst/webrtc/rtptransceiver.c
index 6864d5f873b821fbd102f2633b26ceedb9850550..60c4143b55e3b330bc0441e97d22e68531479b24 100644 (file)
--- a/gst-libs/gst/webrtc/rtptransceiver.c
+++ b/gst-libs/gst/webrtc/rtptransceiver.c
@@ -58,6 +58,7 @@ enum
   PROP_MID,
   PROP_CURRENT_DIRECTION,
   PROP_KIND,
+  PROP_CODEC_PREFERENCES,
   PROP_STOPPED,                 // FIXME
 };
 
@@ -82,6 +83,9 @@ gst_webrtc_rtp_transceiver_set_property (GObject * object, guint prop_id,
     case PROP_DIRECTION:
       webrtc->direction = g_value_get_enum (value);
       break;
+    case PROP_CODEC_PREFERENCES:
+      gst_caps_replace (&webrtc->codec_preferences, g_value_get_boxed (value));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -116,6 +120,9 @@ gst_webrtc_rtp_transceiver_get_property (GObject * object, guint prop_id,
     case PROP_KIND:
       g_value_set_enum (value, webrtc->kind);
       break;
+    case PROP_CODEC_PREFERENCES:
+      gst_value_set_caps (value, webrtc->codec_preferences);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -264,6 +271,19 @@ gst_webrtc_rtp_transceiver_class_init (GstWebRTCRTPTransceiverClass * klass)
           "Kind of media this transceiver transports",
           GST_TYPE_WEBRTC_KIND, GST_WEBRTC_KIND_UNKNOWN,
           G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  /**
+   * GstWebRTCRTPTransceiver:codec-preferences:
+   *
+   * Caps representing the codec preferences.
+   *
+   * Since: 1.20
+   **/
+  g_object_class_install_property (gobject_class,
+      PROP_CODEC_PREFERENCES,
+      g_param_spec_boxed ("codec-preferences", "Codec Preferences",
+          "Caps representing the codec preferences.",
+          GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }
 
 static void