Cast: reduce the amount of retransmission packets

media/cast/video_sender/video_sender.h

 // Copyright 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 MEDIA_CAST_VIDEO_SENDER_VIDEO_SENDER_H_
 #define MEDIA_CAST_VIDEO_SENDER_VIDEO_SENDER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 66 matching lines @@
   void SendRtcpReport(bool schedule_future_reports);
 
   // Schedule and execute periodic checks for re-sending frames.  If no
   // acknowledgements have been received for "too long," VideoSender will
   // speculatively re-send the frame just after |latest_acked_frame_id_| (the
   // whole frame).  This is a last resort tactic to prevent the session from
   // getting stuck after a long outage.
   void ScheduleNextResendCheck();
   void ResendCheck();
 
-  // Asks |transport_sender_| to resend all the packets for a particular frame.
-  void ResendFrame(uint32 resend_frame_id);
+  // Resend certain packets of an unacked frame to kick start re-transmission.
+  void ResendForKickstart();
 
   // Returns true if there are too many frames in flight, as defined by the
   // configured target playout delay plus simple logic.  When this is true,
   // InsertRawVideoFrame() will silenty drop frames instead of sending them to
   // the video encoder.
   bool AreTooManyFramesInFlight() const;
 
   // Called by the |video_encoder_| with the next EncodeFrame to send.
   void SendEncodedVideoFrame(int requested_bitrate_before_encode,
                              scoped_ptr<transport::EncodedFrame> encoded_frame);
@@ skipping 85 matching lines @@
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<VideoSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoSender);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_VIDEO_SENDER_VIDEO_SENDER_H_