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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
      6 #define CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
      7 
      8 #include "base/id_map.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/memory/weak_ptr.h"
     11 #include "base/time/default_tick_clock.h"
     12 #include "chrome/common/cast_messages.h"
     13 #include "content/public/browser/browser_message_filter.h"
     14 #include "media/cast/cast_sender.h"
     15 #include "media/cast/logging/logging_defines.h"
     16 #include "media/cast/net/cast_transport_sender.h"
     17 
     18 namespace content {
     19 class PowerSaveBlocker;
     20 }  // namespace content
     21 
     22 namespace cast {
     23 
     24 class CastTransportHostFilter : public content::BrowserMessageFilter {
     25  public:
     26   CastTransportHostFilter();
     27  private:
     28   virtual ~CastTransportHostFilter();
     29 
     30   void NotifyStatusChange(
     31       int32 channel_id,
     32       media::cast::CastTransportStatus result);
     33   void SendRawEvents(
     34       int32 channel_id,
     35       const std::vector<media::cast::PacketEvent>& packet_events,
     36       const std::vector<media::cast::FrameEvent>& frame_events);
     37   void SendRtt(int32 channel_id, uint32 ssrc, base::TimeDelta rtt);
     38   void SendCastMessage(int32 channel_id,
     39                        uint32 ssrc,
     40                        const media::cast::RtcpCastMessage& cast_message);
     41 
     42   // BrowserMessageFilter implementation.
     43   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     44 
     45   // Forwarding functions.
     46   void OnInitializeAudio(
     47       int32 channel_id,
     48       const media::cast::CastTransportRtpConfig& config);
     49   void OnInitializeVideo(
     50       int32 channel_id,
     51       const media::cast::CastTransportRtpConfig& config);
     52   void OnInsertFrame(
     53       int32 channel_id,
     54       uint32 ssrc,
     55       const media::cast::EncodedFrame& frame);
     56   void OnSendSenderReport(
     57       int32 channel_id,
     58       uint32 ssrc,
     59       base::TimeTicks current_time,
     60       uint32 current_time_as_rtp_timestamp);
     61   void OnCancelSendingFrames(int32 channel_id, uint32 ssrc,
     62                              const std::vector<uint32>& frame_ids);
     63   void OnResendFrameForKickstart(int32 channel_id, uint32 ssrc,
     64                                  uint32 frame_id);
     65   void OnNew(
     66       int32 channel_id,
     67       const net::IPEndPoint& remote_end_point,
     68       const base::DictionaryValue& options);
     69   void OnDelete(int32 channel_id);
     70 
     71   IDMap<media::cast::CastTransportSender, IDMapOwnPointer> id_map_;
     72 
     73   // Clock used by Cast transport.
     74   base::DefaultTickClock clock_;
     75 
     76   // While |id_map_| is non-empty, hold an instance of
     77   // content::PowerSaveBlocker.  This prevents Chrome from being suspended while
     78   // remoting content.
     79   scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
     80 
     81   base::WeakPtrFactory<CastTransportHostFilter> weak_factory_;
     82 
     83   DISALLOW_COPY_AND_ASSIGN(CastTransportHostFilter);
     84 };
     85 
     86 }  // namespace cast
     87 
     88 #endif  // CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
     89