Define EncodedVideoSource and RtcCapturedEncodingVideoCapturer.

content/renderer/media/rtc_encoding_video_capturer_factory.h

+// Copyright (c) 2013 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_ENCODING_VIDEO_CAPTURER_FACTORY_H_
+#define CONTENT_RENDERER_MEDIA_RTC_ENCODING_VIDEO_CAPTURER_FACTORY_H_
+
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "media/video/encoded_video_source.h"
+#include "media/video/video_encode_types.h"
+#include "third_party/libjingle/source/talk/media/webrtc/webrtcvideoencoderfactory.h"
+
+namespace content {
+
+class RtcEncodingVideoCapturer;
+
+class RtcEncodingVideoCapturerFactory :
+      public cricket::WebRtcVideoEncoderFactory,
+      public base::SupportsWeakPtr<RtcEncodingVideoCapturerFactory> {
+ public:
+  RtcEncodingVideoCapturerFactory();
+
+  // WebRtcVideoEncoderFactory interface.
+  virtual webrtc::VideoEncoder* CreateVideoEncoder(
+      webrtc::VideoCodecType type) OVERRIDE;
+  virtual void DestroyVideoEncoder(webrtc::VideoEncoder* encoder) OVERRIDE;
+
+  virtual const std::vector<VideoCodec>& codecs() const OVERRIDE;
+
+  virtual void AddObserver(
+      WebRtcVideoEncoderFactory::Observer* observer) OVERRIDE;
+  virtual void RemoveObserver(
+      WebRtcVideoEncoderFactory::Observer* observer) OVERRIDE;
+
+  // Callback for RequestCapabilities().
+  void OnCapabilitiesAvailable(const media::VideoEncodingCapabilities& caps);
+
+  // Invoked when an EncodedVideoSource is added/removed.
+  void OnEncodedVideoSourceAdded(media::EncodedVideoSource* source);
+  void OnEncodedVideoSourceRemoved(media::EncodedVideoSource* source);
+
+private:
+  virtual ~RtcEncodingVideoCapturerFactory();
+
+  // Set of registered encoding capable video capturers.
+  typedef std::set<webrtc::VideoEncoder*> EncoderSet;
+
+  media::EncodedVideoSource* encoded_video_source_;
+  std::vector<VideoCodec> codecs_;
+
+  EncoderSet encoder_set_;
+
+  ObserverList<WebRtcVideoEncoderFactory::Observer, true> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(RtcEncodingVideoCapturerFactory);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_RTC_ENCODING_VIDEO_CAPTURER_FACTORY_H_