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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 class PacketSender { | 39 class PacketSender { |
40 public: | 40 public: |
41 // Note: packets sent as a result of a callback should not pass by this | 41 // Note: packets sent as a result of a callback should not pass by this |
42 // module again. | 42 // module again. |
43 // Called when it's time to send a queued packet. | 43 // Called when it's time to send a queued packet. |
44 // Returns false if packet cannot be sent. | 44 // Returns false if packet cannot be sent. |
45 virtual bool TimeToSendPacket(uint32_t ssrc, | 45 virtual bool TimeToSendPacket(uint32_t ssrc, |
46 uint16_t sequence_number, | 46 uint16_t sequence_number, |
47 int64_t capture_time_ms, | 47 int64_t capture_time_ms, |
48 bool retransmission, | 48 bool retransmission, |
49 int probe_cluster_id) = 0; | 49 const PacedPacketInfo& cluster_info) = 0; |
50 // Called when it's a good time to send a padding data. | 50 // Called when it's a good time to send a padding data. |
51 // Returns the number of bytes sent. | 51 // Returns the number of bytes sent. |
52 virtual size_t TimeToSendPadding(size_t bytes, int probe_cluster_id) = 0; | 52 virtual size_t TimeToSendPadding(size_t bytes, |
| 53 const PacedPacketInfo& cluster_info) = 0; |
53 | 54 |
54 protected: | 55 protected: |
55 virtual ~PacketSender() {} | 56 virtual ~PacketSender() {} |
56 }; | 57 }; |
57 | 58 |
58 // Expected max pacer delay in ms. If ExpectedQueueTimeMs() is higher than | 59 // Expected max pacer delay in ms. If ExpectedQueueTimeMs() is higher than |
59 // this value, the packet producers should wait (eg drop frames rather than | 60 // this value, the packet producers should wait (eg drop frames rather than |
60 // encoding them). Bitrate sent may temporarily exceed target set by | 61 // encoding them). Bitrate sent may temporarily exceed target set by |
61 // UpdateBitrate() so that this limit will be upheld. | 62 // UpdateBitrate() so that this limit will be upheld. |
62 static const int64_t kMaxQueueLengthMs; | 63 static const int64_t kMaxQueueLengthMs; |
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138 // Process any pending packets in the queue(s). | 139 // Process any pending packets in the queue(s). |
139 void Process() override; | 140 void Process() override; |
140 | 141 |
141 private: | 142 private: |
142 // Updates the number of bytes that can be sent for the next time interval. | 143 // Updates the number of bytes that can be sent for the next time interval. |
143 void UpdateBudgetWithElapsedTime(int64_t delta_time_in_ms) | 144 void UpdateBudgetWithElapsedTime(int64_t delta_time_in_ms) |
144 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 145 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
145 void UpdateBudgetWithBytesSent(size_t bytes) | 146 void UpdateBudgetWithBytesSent(size_t bytes) |
146 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 147 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
147 | 148 |
148 bool SendPacket(const paced_sender::Packet& packet, int probe_cluster_id) | 149 bool SendPacket(const paced_sender::Packet& packet, |
| 150 const PacedPacketInfo& cluster_info) |
149 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 151 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
150 size_t SendPadding(size_t padding_needed, int probe_cluster_id) | 152 size_t SendPadding(size_t padding_needed, const PacedPacketInfo& cluster_info) |
151 EXCLUSIVE_LOCKS_REQUIRED(critsect_); | 153 EXCLUSIVE_LOCKS_REQUIRED(critsect_); |
152 | 154 |
153 Clock* const clock_; | 155 Clock* const clock_; |
154 PacketSender* const packet_sender_; | 156 PacketSender* const packet_sender_; |
155 std::unique_ptr<AlrDetector> alr_detector_ GUARDED_BY(critsect_); | 157 std::unique_ptr<AlrDetector> alr_detector_ GUARDED_BY(critsect_); |
156 | 158 |
157 std::unique_ptr<CriticalSectionWrapper> critsect_; | 159 std::unique_ptr<CriticalSectionWrapper> critsect_; |
158 bool paused_ GUARDED_BY(critsect_); | 160 bool paused_ GUARDED_BY(critsect_); |
159 // This is the media budget, keeping track of how many bits of media | 161 // This is the media budget, keeping track of how many bits of media |
160 // we can pace out during the current interval. | 162 // we can pace out during the current interval. |
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174 uint32_t max_padding_bitrate_kbps_ GUARDED_BY(critsect_); | 176 uint32_t max_padding_bitrate_kbps_ GUARDED_BY(critsect_); |
175 uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_); | 177 uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_); |
176 | 178 |
177 int64_t time_last_update_us_ GUARDED_BY(critsect_); | 179 int64_t time_last_update_us_ GUARDED_BY(critsect_); |
178 | 180 |
179 std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_); | 181 std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_); |
180 uint64_t packet_counter_; | 182 uint64_t packet_counter_; |
181 }; | 183 }; |
182 } // namespace webrtc | 184 } // namespace webrtc |
183 #endif // WEBRTC_MODULES_PACING_PACED_SENDER_H_ | 185 #endif // WEBRTC_MODULES_PACING_PACED_SENDER_H_ |
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