Adding support for MediaStream and PeerConnection functionality

content/renderer/media/media_stream_dependency_factory.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_MEDIA_STREAM_DEPENDENCY_FACTORY_H_
+#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DEPENDENCY_FACTORY_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+#include "third_party/libjingle/source/talk/app/webrtc/peerconnectionfactory.h"
+#include "webkit/glue/p2p_transport.h"
+
+namespace content {
+class IpcNetworkManager;
+class IpcPacketSocketFactory;
+class P2PSocketDispatcher;
+}
+
+namespace cricket {
+class MediaEngineInterface;
+class PortAllocator;
+class WebRtcMediaEngine;
+}
+
+namespace talk_base {
+class NetworkManager;
+class PacketSocketFactory;
+class Thread;
+}
+
+namespace webrtc {
+class PeerConnection;
+class VideoCaptureModule;
+}
+
+// Object factory for MediaStreamImpl and PeerConnectionHandler.
+class CONTENT_EXPORT MediaStreamDependencyFactory {
+ public:
+  MediaStreamDependencyFactory();
+  virtual ~MediaStreamDependencyFactory();
+
+  // WebRtcMediaEngine is used in CreatePeerConnectionFactory().
+  virtual cricket::WebRtcMediaEngine* CreateWebRtcMediaEngine();
+
+  // Creates and deletes |pc_factory_|, which in turn is used for
+  // creating PeerConnection objects. |media_engine| is the engine created by
+  // CreateWebRtcMediaEngine(). |port_allocator| and |media_engine| will be
+  // owned by |pc_factory_|. |worker_thread| is owned by MediaStreamImpl.
+  virtual bool CreatePeerConnectionFactory(
+      cricket::MediaEngineInterface* media_engine,
+      talk_base::Thread* worker_thread);
+  virtual void DeletePeerConnectionFactory();
+  virtual bool PeerConnectionFactoryCreated();
+
+  // The port allocator is used in CreatePeerConnection().
+  virtual cricket::PortAllocator* CreatePortAllocator(
+      content::P2PSocketDispatcher* socket_dispatcher,
+      talk_base::NetworkManager* network_manager,
+      talk_base::PacketSocketFactory* socket_factory,
+      const webkit_glue::P2PTransport::Config& config);
+
+  // Asks the PeerConnection factory to create a PeerConnection object. See
+  // MediaStreamImpl for details about |signaling_thread|. The PeerConnection
+  // object is owned by PeerConnectionHandler.
+  virtual webrtc::PeerConnection* CreatePeerConnection(
+      cricket::PortAllocator* port_allocator,
+      talk_base::Thread* signaling_thread);
+
+ private:
+  scoped_ptr<webrtc::PeerConnectionFactory> pc_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamDependencyFactory);
+};
+
+#endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DEPENDENCY_FACTORY_H_