Adding CastRemotingSender for media remoting.

chrome/browser/media/cast_transport_host_filter.h

 // Copyright 2014 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 CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
 #define CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/default_tick_clock.h"
+#include "chrome/browser/media/cast_remoting_sender.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "media/cast/cast_sender.h"
 #include "media/cast/logging/logging_defines.h"
 #include "media/cast/net/cast_transport.h"
 #include "media/cast/net/udp_transport.h"
 
 namespace device {
 class PowerSaveBlocker;
 }  // namespace device
 
 namespace cast {
 
 class CastTransportHostFilter : public content::BrowserMessageFilter {
  public:
   CastTransportHostFilter();
 
  private:
   ~CastTransportHostFilter() override;
 
   // Status callback to create UdpTransport.
   void OnStatusChanged(int32_t channel_id,
                        media::cast::CastTransportStatus status);
 
   // BrowserMessageFilter implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // Forwarding functions.
+  // For remoting RTP streams, calling this will create a CastRemotingSender for
+  // the stream, which will be automatically destroyed when the associated
+  // chanel is deleted.
   void OnInitializeStream(int32_t channel_id,
                           const media::cast::CastTransportRtpConfig& config);
+
   void OnInsertFrame(int32_t channel_id,
                      uint32_t ssrc,
                      const media::cast::EncodedFrame& frame);
   void OnSendSenderReport(
       int32_t channel_id,
       uint32_t ssrc,
       base::TimeTicks current_time,
       media::cast::RtpTimeTicks current_time_as_rtp_timestamp);
   void OnCancelSendingFrames(
       int32_t channel_id,
@@ skipping 31 matching lines @@
   IDMap<media::cast::CastTransport, IDMapOwnPointer> id_map_;
 
   // Clock used by Cast transport.
   base::DefaultTickClock clock_;
 
   // While |id_map_| is non-empty, hold an instance of
   // device::PowerSaveBlocker.  This prevents Chrome from being suspended while
   // remoting content.
   std::unique_ptr<device::PowerSaveBlocker> power_save_blocker_;
 
+  // This map records all active remoting senders. It uses the unique RTP
+  // stream ID as the key.
+  IDMap<CastRemotingSender, IDMapOwnPointer> remoting_sender_map_;
+
+  // This map stores all active remoting streams for each channel. It uses the
+  // channel ID as the key.
+  std::multimap<int32_t, int32_t> stream_id_map_;
+
   base::WeakPtrFactory<CastTransportHostFilter> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastTransportHostFilter);
 };
 
 }  // namespace cast
 
 #endif  // CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_