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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 #include "media/cast/net/pacing/paced_sender.h" | 5 #include "media/cast/transport/pacing/paced_sender.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/message_loop/message_loop.h" | 8 #include "base/message_loop/message_loop.h" |
| 9 | 9 |
| 10 namespace media { | 10 namespace media { |
| 11 namespace cast { | 11 namespace cast { |
| 12 namespace transport { |
| 12 | 13 |
| 13 static const int64 kPacingIntervalMs = 10; | 14 static const int64 kPacingIntervalMs = 10; |
| 14 // Each frame will be split into no more than kPacingMaxBurstsPerFrame | 15 // Each frame will be split into no more than kPacingMaxBurstsPerFrame |
| 15 // bursts of packets. | 16 // bursts of packets. |
| 16 static const size_t kPacingMaxBurstsPerFrame = 3; | 17 static const size_t kPacingMaxBurstsPerFrame = 3; |
| 17 | 18 |
| 18 PacedSender::PacedSender(scoped_refptr<CastEnvironment> cast_environment, | 19 PacedSender::PacedSender(scoped_refptr<CastEnvironment> cast_environment, |
| 19 PacketSender* transport) | 20 PacketSender* transport) |
| 20 : cast_environment_(cast_environment), | 21 : cast_environment_(cast_environment), |
| 21 burst_size_(1), | 22 burst_size_(1), |
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| 140 void PacedSender::UpdateBurstSize(size_t packets_to_send) { | 141 void PacedSender::UpdateBurstSize(size_t packets_to_send) { |
| 141 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); | 142 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); |
| 142 packets_to_send = std::max(packets_to_send, | 143 packets_to_send = std::max(packets_to_send, |
| 143 resend_packet_list_.size() + packet_list_.size()); | 144 resend_packet_list_.size() + packet_list_.size()); |
| 144 | 145 |
| 145 packets_to_send += (kPacingMaxBurstsPerFrame - 1); // Round up. | 146 packets_to_send += (kPacingMaxBurstsPerFrame - 1); // Round up. |
| 146 burst_size_ = std::max(packets_to_send / kPacingMaxBurstsPerFrame, | 147 burst_size_ = std::max(packets_to_send / kPacingMaxBurstsPerFrame, |
| 147 burst_size_); | 148 burst_size_); |
| 148 } | 149 } |
| 149 | 150 |
| 151 } // namespace transport |
| 150 } // namespace cast | 152 } // namespace cast |
| 151 } // namespace media | 153 } // namespace media |
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