| OLD | NEW |
| 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 |
| 11 #include "webrtc/video_engine/vie_remb.h" | 11 #include "webrtc/video_engine/vie_remb.h" |
| 12 | 12 |
| 13 #include <assert.h> | 13 #include <assert.h> |
| 14 | 14 |
| 15 #include <algorithm> | 15 #include <algorithm> |
| 16 | 16 |
| 17 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h" | 17 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h" |
| 18 #include "webrtc/modules/utility/include/process_thread.h" | 18 #include "webrtc/modules/utility/include/process_thread.h" |
| 19 #include "webrtc/system_wrappers/include/critical_section_wrapper.h" | 19 #include "webrtc/system_wrappers/include/critical_section_wrapper.h" |
| 20 #include "webrtc/system_wrappers/include/tick_util.h" | 20 #include "webrtc/system_wrappers/include/tick_util.h" |
| 21 #include "webrtc/system_wrappers/include/trace.h" | 21 #include "webrtc/system_wrappers/include/trace.h" |
| 22 | 22 |
| 23 namespace webrtc { | 23 namespace webrtc { |
| 24 | 24 |
| 25 const int kRembSendIntervalMs = 200; | 25 const int kRembSendIntervalMs = 200; |
| 26 | 26 |
| 27 // % threshold for if we should send a new REMB asap. | 27 // % threshold for if we should send a new REMB asap. |
| 28 const unsigned int kSendThresholdPercent = 97; | 28 const unsigned int kSendThresholdPercent = 97; |
| 29 | 29 |
| 30 VieRemb::VieRemb() | 30 VieRemb::VieRemb(Clock* clock) |
| 31 : list_crit_(CriticalSectionWrapper::CreateCriticalSection()), | 31 : clock_(clock), |
| 32 last_remb_time_(TickTime::MillisecondTimestamp()), | 32 list_crit_(CriticalSectionWrapper::CreateCriticalSection()), |
| 33 last_remb_time_(clock_->TimeInMilliseconds()), |
| 33 last_send_bitrate_(0), | 34 last_send_bitrate_(0), |
| 34 bitrate_(0) {} | 35 bitrate_(0) {} |
| 35 | 36 |
| 36 VieRemb::~VieRemb() {} | 37 VieRemb::~VieRemb() {} |
| 37 | 38 |
| 38 void VieRemb::AddReceiveChannel(RtpRtcp* rtp_rtcp) { | 39 void VieRemb::AddReceiveChannel(RtpRtcp* rtp_rtcp) { |
| 39 assert(rtp_rtcp); | 40 assert(rtp_rtcp); |
| 40 | 41 |
| 41 CriticalSectionScoped cs(list_crit_.get()); | 42 CriticalSectionScoped cs(list_crit_.get()); |
| 42 if (std::find(receive_modules_.begin(), receive_modules_.end(), rtp_rtcp) != | 43 if (std::find(receive_modules_.begin(), receive_modules_.end(), rtp_rtcp) != |
| (...skipping 55 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 98 unsigned int bitrate) { | 99 unsigned int bitrate) { |
| 99 list_crit_->Enter(); | 100 list_crit_->Enter(); |
| 100 // If we already have an estimate, check if the new total estimate is below | 101 // If we already have an estimate, check if the new total estimate is below |
| 101 // kSendThresholdPercent of the previous estimate. | 102 // kSendThresholdPercent of the previous estimate. |
| 102 if (last_send_bitrate_ > 0) { | 103 if (last_send_bitrate_ > 0) { |
| 103 unsigned int new_remb_bitrate = last_send_bitrate_ - bitrate_ + bitrate; | 104 unsigned int new_remb_bitrate = last_send_bitrate_ - bitrate_ + bitrate; |
| 104 | 105 |
| 105 if (new_remb_bitrate < kSendThresholdPercent * last_send_bitrate_ / 100) { | 106 if (new_remb_bitrate < kSendThresholdPercent * last_send_bitrate_ / 100) { |
| 106 // The new bitrate estimate is less than kSendThresholdPercent % of the | 107 // The new bitrate estimate is less than kSendThresholdPercent % of the |
| 107 // last report. Send a REMB asap. | 108 // last report. Send a REMB asap. |
| 108 last_remb_time_ = TickTime::MillisecondTimestamp() - kRembSendIntervalMs; | 109 last_remb_time_ = clock_->TimeInMilliseconds() - kRembSendIntervalMs; |
| 109 } | 110 } |
| 110 } | 111 } |
| 111 bitrate_ = bitrate; | 112 bitrate_ = bitrate; |
| 112 | 113 |
| 113 // Calculate total receive bitrate estimate. | 114 // Calculate total receive bitrate estimate. |
| 114 int64_t now = TickTime::MillisecondTimestamp(); | 115 int64_t now = clock_->TimeInMilliseconds(); |
| 115 | 116 |
| 116 if (now - last_remb_time_ < kRembSendIntervalMs) { | 117 if (now - last_remb_time_ < kRembSendIntervalMs) { |
| 117 list_crit_->Leave(); | 118 list_crit_->Leave(); |
| 118 return; | 119 return; |
| 119 } | 120 } |
| 120 last_remb_time_ = now; | 121 last_remb_time_ = now; |
| 121 | 122 |
| 122 if (ssrcs.empty() || receive_modules_.empty()) { | 123 if (ssrcs.empty() || receive_modules_.empty()) { |
| 123 list_crit_->Leave(); | 124 list_crit_->Leave(); |
| 124 return; | 125 return; |
| 125 } | 126 } |
| 126 | 127 |
| 127 // Send a REMB packet. | 128 // Send a REMB packet. |
| 128 RtpRtcp* sender = NULL; | 129 RtpRtcp* sender = NULL; |
| 129 if (!rtcp_sender_.empty()) { | 130 if (!rtcp_sender_.empty()) { |
| 130 sender = rtcp_sender_.front(); | 131 sender = rtcp_sender_.front(); |
| 131 } else { | 132 } else { |
| 132 sender = receive_modules_.front(); | 133 sender = receive_modules_.front(); |
| 133 } | 134 } |
| 134 last_send_bitrate_ = bitrate_; | 135 last_send_bitrate_ = bitrate_; |
| 135 | 136 |
| 136 list_crit_->Leave(); | 137 list_crit_->Leave(); |
| 137 | 138 |
| 138 if (sender) { | 139 if (sender) { |
| 139 sender->SetREMBData(bitrate_, ssrcs); | 140 sender->SetREMBData(bitrate_, ssrcs); |
| 140 } | 141 } |
| 141 } | 142 } |
| 142 | 143 |
| 143 } // namespace webrtc | 144 } // namespace webrtc |
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