Implement MediaStreamTrack.getConstraints

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

 /*
  * 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 13 matching lines @@
  */
 
 #include "modules/mediastream/MediaStreamTrack.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/Event.h"
 #include "core/frame/Deprecation.h"
+#include "modules/mediastream/MediaConstraintsImpl.h"
 #include "modules/mediastream/MediaStream.h"
 #include "modules/mediastream/MediaStreamTrackSourcesCallback.h"
 #include "modules/mediastream/MediaStreamTrackSourcesRequestImpl.h"
 #include "modules/mediastream/UserMediaController.h"
 #include "platform/mediastream/MediaStreamCenter.h"
 #include "platform/mediastream/MediaStreamComponent.h"
 #include "public/platform/WebSourceInfo.h"
 
 namespace blink {
 
 MediaStreamTrack* MediaStreamTrack::create(ExecutionContext* context, MediaStreamComponent* component)
 {
     MediaStreamTrack* track = new MediaStreamTrack(context, component);
     track->suspendIfNeeded();
     return track;
 }
 
 MediaStreamTrack::MediaStreamTrack(ExecutionContext* context, MediaStreamComponent* component)
     : ActiveScriptWrappable(this)
     , ActiveDOMObject(context)
     , m_readyState(MediaStreamSource::ReadyStateLive)
     , m_isIteratingRegisteredMediaStreams(false)
     , m_stopped(false)
     , m_component(component)
+    // The source's constraints aren't yet initialized at creation time.
+    , m_constraints()
 {
     m_component->source()->addObserver(this);
 }
 
 MediaStreamTrack::~MediaStreamTrack()
 {
 }
 
 String MediaStreamTrack::kind() const
 {
@@ skipping 95 matching lines @@
 }
 
 MediaStreamTrack* MediaStreamTrack::clone(ExecutionContext* context)
 {
     MediaStreamComponent* clonedComponent = MediaStreamComponent::create(component()->source());
     MediaStreamTrack* clonedTrack = MediaStreamTrack::create(context, clonedComponent);
     MediaStreamCenter::instance().didCreateMediaStreamTrack(clonedComponent);
     return clonedTrack;
 }
 
+void MediaStreamTrack::getConstraints(MediaTrackConstraints& constraints)
+{
+    MediaConstraintsImpl::convertConstraints(m_constraints, constraints);
+}
+
+void MediaStreamTrack::setConstraints(const WebMediaConstraints& constraints)
+{
+    m_constraints = constraints;
+}
+
 bool MediaStreamTrack::ended() const
 {
     return m_stopped || (m_readyState == MediaStreamSource::ReadyStateEnded);
 }
 
 void MediaStreamTrack::sourceChangedState()
 {
     if (ended())
         return;
 
@@ skipping 80 matching lines @@
 
 DEFINE_TRACE(MediaStreamTrack)
 {
     visitor->trace(m_registeredMediaStreams);
     visitor->trace(m_component);
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink