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| 1 /* | 1 /* |
| 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
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| 35 public: | 35 public: |
| 36 class PacketSender { | 36 class PacketSender { |
| 37 public: | 37 public: |
| 38 // Note: packets sent as a result of a callback should not pass by this | 38 // Note: packets sent as a result of a callback should not pass by this |
| 39 // module again. | 39 // module again. |
| 40 // Called when it's time to send a queued packet. | 40 // Called when it's time to send a queued packet. |
| 41 // Returns false if packet cannot be sent. | 41 // Returns false if packet cannot be sent. |
| 42 virtual bool TimeToSendPacket(uint32_t ssrc, | 42 virtual bool TimeToSendPacket(uint32_t ssrc, |
| 43 uint16_t sequence_number, | 43 uint16_t sequence_number, |
| 44 int64_t capture_time_ms, | 44 int64_t capture_time_ms, |
| 45 bool retransmission) = 0; | 45 bool retransmission, |
| 46 int probe_cluster_id) = 0; |
| 46 // Called when it's a good time to send a padding data. | 47 // Called when it's a good time to send a padding data. |
| 47 // Returns the number of bytes sent. | 48 // Returns the number of bytes sent. |
| 48 virtual size_t TimeToSendPadding(size_t bytes) = 0; | 49 virtual size_t TimeToSendPadding(size_t bytes) = 0; |
| 49 | 50 |
| 50 protected: | 51 protected: |
| 51 virtual ~PacketSender() {} | 52 virtual ~PacketSender() {} |
| 52 }; | 53 }; |
| 53 | 54 |
| 54 // Expected max pacer delay in ms. If ExpectedQueueTimeMs() is higher than | 55 // Expected max pacer delay in ms. If ExpectedQueueTimeMs() is higher than |
| 55 // this value, the packet producers should wait (eg drop frames rather than | 56 // this value, the packet producers should wait (eg drop frames rather than |
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| 123 int64_t TimeUntilNextProcess() override; | 124 int64_t TimeUntilNextProcess() override; |
| 124 | 125 |
| 125 // Process any pending packets in the queue(s). | 126 // Process any pending packets in the queue(s). |
| 126 void Process() override; | 127 void Process() override; |
| 127 | 128 |
| 128 private: | 129 private: |
| 129 // Updates the number of bytes that can be sent for the next time interval. | 130 // Updates the number of bytes that can be sent for the next time interval. |
| 130 void UpdateBytesPerInterval(int64_t delta_time_in_ms) | 131 void UpdateBytesPerInterval(int64_t delta_time_in_ms) |
| 131 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 132 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
| 132 | 133 |
| 133 bool SendPacket(const paced_sender::Packet& packet) | 134 bool SendPacket(const paced_sender::Packet& packet, int probe_cluster_id) |
| 134 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 135 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
| 135 void SendPadding(size_t padding_needed) EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 136 void SendPadding(size_t padding_needed) EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
| 136 | 137 |
| 137 Clock* const clock_; | 138 Clock* const clock_; |
| 138 PacketSender* const packet_sender_; | 139 PacketSender* const packet_sender_; |
| 139 | 140 |
| 140 std::unique_ptr<CriticalSectionWrapper> critsect_; | 141 std::unique_ptr<CriticalSectionWrapper> critsect_; |
| 141 bool paused_ GUARDED_BY(critsect_); | 142 bool paused_ GUARDED_BY(critsect_); |
| 142 bool probing_enabled_; | 143 bool probing_enabled_; |
| 143 // This is the media budget, keeping track of how many bits of media | 144 // This is the media budget, keeping track of how many bits of media |
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| 157 uint32_t min_send_bitrate_kbps_ GUARDED_BY(critsect_); | 158 uint32_t min_send_bitrate_kbps_ GUARDED_BY(critsect_); |
| 158 uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_); | 159 uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_); |
| 159 | 160 |
| 160 int64_t time_last_update_us_ GUARDED_BY(critsect_); | 161 int64_t time_last_update_us_ GUARDED_BY(critsect_); |
| 161 | 162 |
| 162 std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_); | 163 std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_); |
| 163 uint64_t packet_counter_; | 164 uint64_t packet_counter_; |
| 164 }; | 165 }; |
| 165 } // namespace webrtc | 166 } // namespace webrtc |
| 166 #endif // WEBRTC_MODULES_PACING_PACED_SENDER_H_ | 167 #endif // WEBRTC_MODULES_PACING_PACED_SENDER_H_ |
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