New PeerConnection handler in Chrome to support latest PeerConnection draft

content/renderer/media/rtc_peer_connection_handler.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_MEDIA_RTC_PEER_CONNECTION_HANDLER_H_
+#define CONTENT_RENDERER_MEDIA_RTC_PEER_CONNECTION_HANDLER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "content/common/content_export.h"
+#include "content/renderer/media/peer_connection_handler_base.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebRTCPeerConnectionHandler.h"
+
+// RTCPeerConnectionHandler is a delegate for the RTC PeerConnection API
+// messages going between WebKit and native PeerConnection in libjingle. It's
+// owned by WebKit.
+// WebKit call all of these methods on the main render thread.
+// Callbacks to the webrtc::PeerConnectionObserver implementation also occur on
+// the main render thread.
+class CONTENT_EXPORT RTCPeerConnectionHandler
+    : public PeerConnectionHandlerBase,
+      NON_EXPORTED_BASE(public WebKit::WebRTCPeerConnectionHandler) {
+ public:
+  RTCPeerConnectionHandler(
+      WebKit::WebRTCPeerConnectionHandlerClient* client,
+      MediaStreamDependencyFactory* dependency_factory);
+  virtual ~RTCPeerConnectionHandler();
+
+  // WebKit::WebRTCPeerConnectionHandler implementation
+  virtual bool initialize(
+      const WebKit::WebRTCConfiguration& server_configuration,
+      const WebKit::WebMediaConstraints& options) OVERRIDE;
+
+  virtual void createOffer(
+      const WebKit::WebRTCSessionDescriptionRequest& request,
+      const WebKit::WebMediaConstraints& options) OVERRIDE;
+  virtual void createAnswer(
+      const WebKit::WebRTCSessionDescriptionRequest& request,
+      const WebKit::WebMediaConstraints& options) OVERRIDE;
+
+  virtual void setLocalDescription(
+      const WebKit::WebRTCVoidRequest& request,
+      const WebKit::WebRTCSessionDescription& description) OVERRIDE;
+  virtual void setRemoteDescription(
+        const WebKit::WebRTCVoidRequest& request,
+        const WebKit::WebRTCSessionDescription& description) OVERRIDE;
+
+  virtual WebKit::WebRTCSessionDescription localDescription()
+      OVERRIDE;
+  virtual WebKit::WebRTCSessionDescription remoteDescription()
+      OVERRIDE;
+  virtual bool updateICE(
+      const WebKit::WebRTCConfiguration& server_configuration,
+      const WebKit::WebMediaConstraints& options) OVERRIDE;
+  virtual bool addICECandidate(
+      const WebKit::WebRTCICECandidate& candidate) OVERRIDE;
+
+  virtual bool addStream(
+      const WebKit::WebMediaStreamDescriptor& stream,
+      const WebKit::WebMediaConstraints& options) OVERRIDE;
+  virtual void removeStream(
+      const WebKit::WebMediaStreamDescriptor& stream) OVERRIDE;
+  // We will be deleted by WebKit after stop has been returned.
+  virtual void stop() OVERRIDE;
+
+  // webrtc::PeerConnectionObserver implementation
+  virtual void OnError() OVERRIDE;
+  virtual void OnStateChange(StateType state_changed) OVERRIDE;
+  virtual void OnAddStream(webrtc::MediaStreamInterface* stream) OVERRIDE;
+  virtual void OnRemoveStream(webrtc::MediaStreamInterface* stream) OVERRIDE;
+  virtual void OnIceCandidate(
+      const webrtc::IceCandidateInterface* candidate) OVERRIDE;
+  virtual void OnIceComplete() OVERRIDE;
+  virtual void OnRenegotiationNeeded() OVERRIDE;
+
+ private:
+  webrtc::SessionDescriptionInterface* CreateNativeSessionDescription(
+      const WebKit::WebRTCSessionDescription& description);
+
+  // |client_| is a weak pointer, and is valid until stop() has returned.
+  WebKit::WebRTCPeerConnectionHandlerClient* client_;
+
+  DISALLOW_COPY_AND_ASSIGN(RTCPeerConnectionHandler);
+};
+
+#endif  // CONTENT_RENDERER_MEDIA_RTC_PEER_CONNECTION_HANDLER_H_