Cast:Moving netwrok sender related code to a designated folder

media/cast/pacing/paced_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_PACING_PACED_SENDER_H_
-#define MEDIA_CAST_PACING_PACED_SENDER_H_
-
-#include <list>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/default_tick_clock.h"
-#include "base/time/tick_clock.h"
-#include "base/time/time.h"
-#include "media/cast/cast_config.h"
-#include "media/cast/cast_environment.h"
-
-namespace media {
-namespace cast {
-
-// We have this pure virtual class to enable mocking.
-class PacedPacketSender {
- public:
-  // Inform the pacer / sender of the total number of packets.
-  virtual bool SendPackets(const PacketList& packets) = 0;
-
-  virtual bool ResendPackets(const PacketList& packets) = 0;
-
-  virtual bool SendRtcpPacket(const Packet& packet) = 0;
-
-  virtual ~PacedPacketSender() {}
-};
-
-class PacedSender : public PacedPacketSender,
-                    public base::NonThreadSafe,
-                    public base::SupportsWeakPtr<PacedSender> {
- public:
-  PacedSender(scoped_refptr<CastEnvironment> cast_environment,
-              PacketSender* transport);
-  virtual ~PacedSender();
-
-  virtual bool SendPackets(const PacketList& packets) OVERRIDE;
-
-  virtual bool ResendPackets(const PacketList& packets) OVERRIDE;
-
-  virtual bool SendRtcpPacket(const Packet& packet) OVERRIDE;
-
- protected:
-  // Schedule a delayed task on the main cast thread when it's time to send the
-  // next packet burst.
-  void ScheduleNextSend();
-
-  // Process any pending packets in the queue(s).
-  void SendNextPacketBurst();
-
- private:
-  bool SendPacketsToTransport(const PacketList& packets,
-                              PacketList* packets_not_sent);
-  void SendStoredPackets();
-  void UpdateBurstSize(size_t num_of_packets);
-
-  scoped_refptr<CastEnvironment> cast_environment_;
-  size_t burst_size_;
-  size_t packets_sent_in_burst_;
-  base::TimeTicks time_last_process_;
-  // Note: We can't combine the |packet_list_| and the |resend_packet_list_|
-  // since then we might get reordering of the retransmitted packets.
-  PacketList packet_list_;
-  PacketList resend_packet_list_;
-  PacketSender* transport_;
-
-  base::WeakPtrFactory<PacedSender> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(PacedSender);
-};
-
-}  // namespace cast
-}  // namespace media
-
-#endif  // MEDIA_CAST_PACING_PACED_SENDER_H_