[chrome.displaySource][WiFi Display] Media pipeline infrastructure

extensions/renderer/api/display_source/wifi_display/wifi_display_media_manager.h

 // Copyright 2016 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 EXTENSIONS_BROWSER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
-#define EXTENSIONS_BROWSER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
+#ifndef EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
+#define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/callback.h"
-#include "base/macros.h"
-#include "third_party/WebKit/public/web/WebDOMMediaStreamTrack.h"
+#include "base/memory/scoped_ptr.h"

[asargent_no_longer_on_chrome, 2016/04/06 20:53:21]

nit: per a very recent announcement on chromium-dev@chromium.org list, we are
supposed to start using std::unique_ptr instead of base::scoped_ptr in all new
code (a mass conversion of existing code is going to happen at some point as
well). 

[Mikhail, 2016/04/07 09:07:25]

Thanks for commenting on this, and it's great that more standard types are to be
used now.

+#include "base/memory/weak_ptr.h"
+#include "extensions/renderer/api/display_source/wifi_display/wifi_display_media_packetizer.h"
+#include "extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "third_party/wds/src/libwds/public/media_manager.h"
 
 namespace extensions {
+class WiFiDisplayVideoSink;
+class WiFiDisplayMediaPipeline;
+class WiFiDisplaySessionService;
 
 class WiFiDisplayMediaManager : public wds::SourceMediaManager {
  public:
   using ErrorCallback = base::Callback<void(const std::string&)>;
 
   WiFiDisplayMediaManager(
       const blink::WebMediaStreamTrack& video_track,
       const blink::WebMediaStreamTrack& audio_track,
       const ErrorCallback& error_callback);
 
@@ skipping 17 matching lines @@
   wds::H264VideoFormat GetOptimalVideoFormat() const override;
   bool InitOptimalAudioFormat(
       const std::vector<wds::AudioCodec>& sink_supported_codecs) override;
   wds::AudioCodec GetOptimalAudioFormat() const override;
 
   void SendIDRPicture() override;
 
   std::string GetSessionId() const override;
 
  private:
+  void OnPlayerCreated(scoped_ptr<WiFiDisplayMediaPipeline> player);
+  void OnMediaPipelineInitialized(bool success);
+
   blink::WebMediaStreamTrack video_track_;
   blink::WebMediaStreamTrack audio_track_;
 
+  scoped_ptr<WiFiDisplayVideoSink> video_sink_;
+
   std::pair<int, int> sink_rtp_ports_;
   wds::H264VideoFormat optimal_video_format_;
   wds::AudioCodec optimal_audio_codec_;
 
+  WiFiDisplayVideoEncoder::InitParameters video_encoder_parameters_;
+  WiFiDisplayMediaPipeline* player_;  // Owned on IO thread.
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
   ErrorCallback error_callback_;
+  bool is_playing_;
+  bool is_initialized_;
+  mutable std::string session_id_;  // Lazily initialized.
+
+  base::WeakPtrFactory<WiFiDisplayMediaManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WiFiDisplayMediaManager);
 };
 
 }  // namespace extensions
 
-#endif  // EXTENSIONS_BROWSER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
+#endif  // EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_