Implement MediaStreamTrack.getConstraints

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 15 matching lines @@
 #ifndef MediaStreamTrack_h
 #define MediaStreamTrack_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/EventTargetModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/mediastream/SourceInfo.h"
 #include "platform/mediastream/MediaStreamDescriptor.h"
 #include "platform/mediastream/MediaStreamSource.h"
+#include "public/platform/WebMediaConstraints.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class AudioSourceProvider;
 class ExceptionState;
-class MediaStreamComponent;
+class MediaTrackConstraints;
 class MediaStreamTrackSourcesCallback;
 
 class MODULES_EXPORT MediaStreamTrack
     : public EventTargetWithInlineData
     , public ActiveScriptWrappable
     , public ActiveDOMObject
     , public MediaStreamSource::Observer {
     USING_GARBAGE_COLLECTED_MIXIN(MediaStreamTrack);
     DEFINE_WRAPPERTYPEINFO();
 public:
@@ skipping 10 matching lines @@
     void setEnabled(bool);
 
     bool muted() const;
 
     String readyState() const;
 
     static void getSources(ExecutionContext*, MediaStreamTrackSourcesCallback*, ExceptionState&);
     void stopTrack(ExceptionState&);
     virtual MediaStreamTrack* clone(ExecutionContext*);
 
+    void getConstraints(MediaTrackConstraints&);
+
+    // This function is called when constrains have been successfully applied.
+    // Called from UserMediaRequest when it succeeds. It is not IDL-exposed.
+    void setConstraints(const WebMediaConstraints&);
+
     DEFINE_ATTRIBUTE_EVENT_LISTENER(mute);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(unmute);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(ended);
 
     MediaStreamComponent* component() { return m_component; }
     bool ended() const;
 
     void registerMediaStream(MediaStream*);
     void unregisterMediaStream(MediaStream*);
 
@@ skipping 19 matching lines @@
     // MediaStreamSourceObserver
     void sourceChangedState() override;
 
     void propagateTrackEnded();
 
     MediaStreamSource::ReadyState m_readyState;
     HeapHashSet<Member<MediaStream>> m_registeredMediaStreams;
     bool m_isIteratingRegisteredMediaStreams;
     bool m_stopped;
     Member<MediaStreamComponent> m_component;
+    WebMediaConstraints m_constraints;
 };
 
 typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;
 
 } // namespace blink
 
 #endif // MediaStreamTrack_h