no commit message

2020-09-17 18:40:01 +08:00
parent 4382915d09
commit d957abceaa
283 changed files with 86935 additions and 63 deletions
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ package org.mangui.osmf.plugins.traits {
+    import org.mangui.hls.HLS;
+    import org.mangui.hls.event.HLSEvent;
+    import org.mangui.hls.model.Level;
+    import org.osmf.traits.MediaTraitBase;
+
+    CONFIG::LOGGING {
+    import org.mangui.hls.utils.Log;
+    }
+
+    public class HLSClosedCaptionsTrait extends MediaTraitBase {
+        private var _hls : HLS;
+        private var _hasClosedCapations : String;
+
+        public function HLSClosedCaptionsTrait(hls : HLS, closed_captions : String = HLSClosedCaptionsState.UNKNOWN) {
+            CONFIG::LOGGING {
+            Log.debug("HLSClosedCaptionsTrait()");
+            }
+            super(HLSMediaTraitType.CLOSED_CAPTIONS);
+
+			_hasClosedCapations = closed_captions;
+            _hls = hls;
+            _hls.addEventListener(HLSEvent.LEVEL_SWITCH, _levelSwitchHandler);
+        }
+
+        override public function dispose() : void {
+            CONFIG::LOGGING {
+            Log.debug("HLSClosedCaptionsTrait:dispose");
+            }
+            _hls.removeEventListener(HLSEvent.LEVEL_SWITCH, _levelSwitchHandler);
+            super.dispose();
+        }
+
+        public function hasClosedCaptions() : String {
+        	return _hasClosedCapations;
+        }
+
+        /** Update playback position/duration **/
+        private function _levelSwitchHandler(event : HLSEvent) : void {
+        	var cc : String = (_hls.levels[event.level] as Level).closed_captions;
+
+        	if (cc && cc === "NONE")
+        	{
+        		// manifest told us to ignore any 608/708 binary
+        		_hasClosedCapations = HLSClosedCaptionsState.NO;
+        	}
+    		else
+    		{
+    			_hasClosedCapations = HLSClosedCaptionsState.UNKNOWN;
+    		}
+
+    		// YES only happens for WebVTT, which isn't supported.
+        }
+    }
+}