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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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| 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, | 45 bool retransmission, |
| 46 int probe_cluster_id) = 0; | 46 int probe_cluster_id) = 0; |
| 47 // 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. |
| 48 // Returns the number of bytes sent. | 48 // Returns the number of bytes sent. |
| 49 virtual size_t TimeToSendPadding(size_t bytes) = 0; | 49 virtual size_t TimeToSendPadding(size_t bytes, int probe_cluster_id) = 0; |
| 50 | 50 |
| 51 protected: | 51 protected: |
| 52 virtual ~PacketSender() {} | 52 virtual ~PacketSender() {} |
| 53 }; | 53 }; |
| 54 | 54 |
| 55 // Expected max pacer delay in ms. If ExpectedQueueTimeMs() is higher than | 55 // Expected max pacer delay in ms. If ExpectedQueueTimeMs() is higher than |
| 56 // 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 |
| 57 // encoding them). Bitrate sent may temporarily exceed target set by | 57 // encoding them). Bitrate sent may temporarily exceed target set by |
| 58 // UpdateBitrate() so that this limit will be upheld. | 58 // UpdateBitrate() so that this limit will be upheld. |
| 59 static const int64_t kMaxQueueLengthMs; | 59 static const int64_t kMaxQueueLengthMs; |
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| 126 // Process any pending packets in the queue(s). | 126 // Process any pending packets in the queue(s). |
| 127 void Process() override; | 127 void Process() override; |
| 128 | 128 |
| 129 private: | 129 private: |
| 130 // 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. |
| 131 void UpdateBytesPerInterval(int64_t delta_time_in_ms) | 131 void UpdateBytesPerInterval(int64_t delta_time_in_ms) |
| 132 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 132 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
| 133 | 133 |
| 134 bool SendPacket(const paced_sender::Packet& packet, int probe_cluster_id) | 134 bool SendPacket(const paced_sender::Packet& packet, int probe_cluster_id) |
| 135 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 135 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
| 136 void SendPadding(size_t padding_needed) EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 136 void SendPadding(size_t padding_needed, int probe_cluster_id) |
| 137 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
| 137 | 138 |
| 138 Clock* const clock_; | 139 Clock* const clock_; |
| 139 PacketSender* const packet_sender_; | 140 PacketSender* const packet_sender_; |
| 140 | 141 |
| 141 std::unique_ptr<CriticalSectionWrapper> critsect_; | 142 std::unique_ptr<CriticalSectionWrapper> critsect_; |
| 142 bool paused_ GUARDED_BY(critsect_); | 143 bool paused_ GUARDED_BY(critsect_); |
| 143 bool probing_enabled_; | 144 bool probing_enabled_; |
| 144 // This is the media budget, keeping track of how many bits of media | 145 // This is the media budget, keeping track of how many bits of media |
| 145 // we can pace out during the current interval. | 146 // we can pace out during the current interval. |
| 146 std::unique_ptr<paced_sender::IntervalBudget> media_budget_ | 147 std::unique_ptr<paced_sender::IntervalBudget> media_budget_ |
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| 158 uint32_t min_send_bitrate_kbps_ GUARDED_BY(critsect_); | 159 uint32_t min_send_bitrate_kbps_ GUARDED_BY(critsect_); |
| 159 uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_); | 160 uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_); |
| 160 | 161 |
| 161 int64_t time_last_update_us_ GUARDED_BY(critsect_); | 162 int64_t time_last_update_us_ GUARDED_BY(critsect_); |
| 162 | 163 |
| 163 std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_); | 164 std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_); |
| 164 uint64_t packet_counter_; | 165 uint64_t packet_counter_; |
| 165 }; | 166 }; |
| 166 } // namespace webrtc | 167 } // namespace webrtc |
| 167 #endif // WEBRTC_MODULES_PACING_PACED_SENDER_H_ | 168 #endif // WEBRTC_MODULES_PACING_PACED_SENDER_H_ |
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