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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_ | 5 #ifndef MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_ |
| 6 #define MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_ | 6 #define MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_ |
| 7 | 7 |
| 8 #include <list> | 8 #include <list> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
| 13 #include "base/memory/weak_ptr.h" | 13 #include "base/memory/weak_ptr.h" |
| 14 #include "base/threading/non_thread_safe.h" | 14 #include "base/threading/non_thread_safe.h" |
| 15 #include "base/time/default_tick_clock.h" | 15 #include "base/time/default_tick_clock.h" |
| 16 #include "base/time/tick_clock.h" | 16 #include "base/time/tick_clock.h" |
| 17 #include "base/time/time.h" | 17 #include "base/time/time.h" |
| 18 #include "media/cast/cast_config.h" // PacketSender | 18 #include "media/cast/cast_config.h" |
| 19 #include "media/cast/transport/cast_transport_config.h" | 19 #include "media/cast/cast_environment.h" |
| 20 | 20 |
| 21 namespace media { | 21 namespace media { |
| 22 namespace cast { | 22 namespace cast { |
| 23 namespace transport { | 23 namespace transport { |
| 24 | 24 |
| 25 // We have this pure virtual class to enable mocking. | 25 // We have this pure virtual class to enable mocking. |
| 26 class PacedPacketSender { | 26 class PacedPacketSender { |
| 27 public: | 27 public: |
| 28 // Inform the pacer / sender of the total number of packets. | 28 // Inform the pacer / sender of the total number of packets. |
| 29 virtual bool SendPackets(const PacketList& packets) = 0; | 29 virtual bool SendPackets(const PacketList& packets) = 0; |
| 30 | 30 |
| 31 virtual bool ResendPackets(const PacketList& packets) = 0; | 31 virtual bool ResendPackets(const PacketList& packets) = 0; |
| 32 | 32 |
| 33 virtual bool SendRtcpPacket(const Packet& packet) = 0; | 33 virtual bool SendRtcpPacket(const Packet& packet) = 0; |
| 34 | 34 |
| 35 virtual ~PacedPacketSender() {} | 35 virtual ~PacedPacketSender() {} |
| 36 }; | 36 }; |
| 37 | 37 |
| 38 class PacedSender : public PacedPacketSender, | 38 class PacedSender : public PacedPacketSender, |
| 39 public base::NonThreadSafe, | 39 public base::NonThreadSafe, |
| 40 public base::SupportsWeakPtr<PacedSender> { | 40 public base::SupportsWeakPtr<PacedSender> { |
| 41 public: | 41 public: |
| 42 PacedSender(base::TickClock* clock, | 42 PacedSender(scoped_refptr<CastEnvironment> cast_environment, |
| 43 PacketSender* transport, | 43 PacketSender* transport); |
| 44 scoped_refptr<base::TaskRunner> transport_task_runner); | |
| 45 virtual ~PacedSender(); | 44 virtual ~PacedSender(); |
| 46 | 45 |
| 47 virtual bool SendPackets(const PacketList& packets) OVERRIDE; | 46 virtual bool SendPackets(const PacketList& packets) OVERRIDE; |
| 48 | 47 |
| 49 virtual bool ResendPackets(const PacketList& packets) OVERRIDE; | 48 virtual bool ResendPackets(const PacketList& packets) OVERRIDE; |
| 50 | 49 |
| 51 virtual bool SendRtcpPacket(const Packet& packet) OVERRIDE; | 50 virtual bool SendRtcpPacket(const Packet& packet) OVERRIDE; |
| 52 | 51 |
| 53 protected: | 52 protected: |
| 54 // Schedule a delayed task on the main cast thread when it's time to send the | 53 // Schedule a delayed task on the main cast thread when it's time to send the |
| 55 // next packet burst. | 54 // next packet burst. |
| 56 void ScheduleNextSend(); | 55 void ScheduleNextSend(); |
| 57 | 56 |
| 58 // Process any pending packets in the queue(s). | 57 // Process any pending packets in the queue(s). |
| 59 void SendNextPacketBurst(); | 58 void SendNextPacketBurst(); |
| 60 | 59 |
| 61 private: | 60 private: |
| 62 bool SendPacketsToTransport(const PacketList& packets, | 61 bool SendPacketsToTransport(const PacketList& packets, |
| 63 PacketList* packets_not_sent); | 62 PacketList* packets_not_sent); |
| 64 void SendStoredPackets(); | 63 void SendStoredPackets(); |
| 65 void UpdateBurstSize(size_t num_of_packets); | 64 void UpdateBurstSize(size_t num_of_packets); |
| 66 | 65 |
| 67 // Not owned by this class. | 66 scoped_refptr<CastEnvironment> cast_environment_; |
| 68 base::TickClock* const clock_; | |
| 69 PacketSender* transport_; | 67 PacketSender* transport_; |
| 70 scoped_refptr<base::TaskRunner> transport_task_runner_; | |
| 71 | 68 |
| 72 size_t burst_size_; | 69 size_t burst_size_; |
| 73 size_t packets_sent_in_burst_; | 70 size_t packets_sent_in_burst_; |
| 74 base::TimeTicks time_last_process_; | 71 base::TimeTicks time_last_process_; |
| 75 // Note: We can't combine the |packet_list_| and the |resend_packet_list_| | 72 // Note: We can't combine the |packet_list_| and the |resend_packet_list_| |
| 76 // since then we might get reordering of the retransmitted packets. | 73 // since then we might get reordering of the retransmitted packets. |
| 77 PacketList packet_list_; | 74 PacketList packet_list_; |
| 78 PacketList resend_packet_list_; | 75 PacketList resend_packet_list_; |
| 79 | 76 |
| 80 base::WeakPtrFactory<PacedSender> weak_factory_; | 77 base::WeakPtrFactory<PacedSender> weak_factory_; |
| 81 | 78 |
| 82 DISALLOW_COPY_AND_ASSIGN(PacedSender); | 79 DISALLOW_COPY_AND_ASSIGN(PacedSender); |
| 83 }; | 80 }; |
| 84 | 81 |
| 85 } // namespace transport | 82 } // namespace transport |
| 86 } // namespace cast | 83 } // namespace cast |
| 87 } // namespace media | 84 } // namespace media |
| 88 | 85 |
| 89 #endif // MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_ | 86 #endif // MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_ |
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