Added implementation of RemoteMediaStreams.

content/renderer/media/remote_media_stream_impl.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_REMOTE_MEDIA_STREAM_IMPL_H_
+#define CONTENT_RENDERER_MEDIA_REMOTE_MEDIA_STREAM_IMPL_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_vector.h"
+#include "base/threading/non_thread_safe.h"
+#include "content/common/content_export.h"
+#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStream.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStreamSource.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStreamTrack.h"
+
+namespace content {
+
+class RemoteMediaStreamTrackObserver;
+
+// RemoteMediaStreamImpl serves as a container and glue between remote webrtc
+// MediaStreams and WebKit MediaStreams. For each remote MediaStream received
+// on a PeerConnection a RemoteMediaStreamImpl instance is created and
+// owned by RtcPeerConnection.
+class CONTENT_EXPORT RemoteMediaStreamImpl
+    : NON_EXPORTED_BASE(public webrtc::ObserverInterface),
+      NON_EXPORTED_BASE(public base::NonThreadSafe) {
+ public:
+  explicit RemoteMediaStreamImpl(
+      webrtc::MediaStreamInterface* webrtc_stream);
+  virtual ~RemoteMediaStreamImpl();
+
+  const WebKit::WebMediaStream& webkit_stream() { return webkit_stream_; }
+
+ private:
+  // webrtc::ObserverInterface implementation.
+  virtual void OnChanged() OVERRIDE;
+
+  scoped_refptr<webrtc::MediaStreamInterface> webrtc_stream_;
+  ScopedVector<RemoteMediaStreamTrackObserver> audio_track_observers_;
+  ScopedVector<RemoteMediaStreamTrackObserver> video_track_observers_;
+  WebKit::WebMediaStream webkit_stream_;
+
+  DISALLOW_COPY_AND_ASSIGN(RemoteMediaStreamImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_REMOTE_MEDIA_STREAM_IMPL_H_