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Diffstat (limited to 'webrtc/video_engine/vie_remb.cc')
-rw-r--r-- | webrtc/video_engine/vie_remb.cc | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/webrtc/video_engine/vie_remb.cc b/webrtc/video_engine/vie_remb.cc deleted file mode 100644 index b347f2ee00..0000000000 --- a/webrtc/video_engine/vie_remb.cc +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include "webrtc/video_engine/vie_remb.h" - -#include <assert.h> - -#include <algorithm> - -#include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp.h" -#include "webrtc/modules/utility/interface/process_thread.h" -#include "webrtc/system_wrappers/include/critical_section_wrapper.h" -#include "webrtc/system_wrappers/include/tick_util.h" -#include "webrtc/system_wrappers/include/trace.h" - -namespace webrtc { - -const int kRembSendIntervalMs = 200; - -// % threshold for if we should send a new REMB asap. -const unsigned int kSendThresholdPercent = 97; - -VieRemb::VieRemb() - : list_crit_(CriticalSectionWrapper::CreateCriticalSection()), - last_remb_time_(TickTime::MillisecondTimestamp()), - last_send_bitrate_(0), - bitrate_(0) {} - -VieRemb::~VieRemb() {} - -void VieRemb::AddReceiveChannel(RtpRtcp* rtp_rtcp) { - assert(rtp_rtcp); - - CriticalSectionScoped cs(list_crit_.get()); - if (std::find(receive_modules_.begin(), receive_modules_.end(), rtp_rtcp) != - receive_modules_.end()) - return; - - // The module probably doesn't have a remote SSRC yet, so don't add it to the - // map. - receive_modules_.push_back(rtp_rtcp); -} - -void VieRemb::RemoveReceiveChannel(RtpRtcp* rtp_rtcp) { - assert(rtp_rtcp); - - CriticalSectionScoped cs(list_crit_.get()); - for (RtpModules::iterator it = receive_modules_.begin(); - it != receive_modules_.end(); ++it) { - if ((*it) == rtp_rtcp) { - receive_modules_.erase(it); - break; - } - } -} - -void VieRemb::AddRembSender(RtpRtcp* rtp_rtcp) { - assert(rtp_rtcp); - - CriticalSectionScoped cs(list_crit_.get()); - - // Verify this module hasn't been added earlier. - if (std::find(rtcp_sender_.begin(), rtcp_sender_.end(), rtp_rtcp) != - rtcp_sender_.end()) - return; - rtcp_sender_.push_back(rtp_rtcp); -} - -void VieRemb::RemoveRembSender(RtpRtcp* rtp_rtcp) { - assert(rtp_rtcp); - - CriticalSectionScoped cs(list_crit_.get()); - for (RtpModules::iterator it = rtcp_sender_.begin(); - it != rtcp_sender_.end(); ++it) { - if ((*it) == rtp_rtcp) { - rtcp_sender_.erase(it); - return; - } - } -} - -bool VieRemb::InUse() const { - CriticalSectionScoped cs(list_crit_.get()); - if (receive_modules_.empty() && rtcp_sender_.empty()) - return false; - else - return true; -} - -void VieRemb::OnReceiveBitrateChanged(const std::vector<unsigned int>& ssrcs, - unsigned int bitrate) { - list_crit_->Enter(); - // If we already have an estimate, check if the new total estimate is below - // kSendThresholdPercent of the previous estimate. - if (last_send_bitrate_ > 0) { - unsigned int new_remb_bitrate = last_send_bitrate_ - bitrate_ + bitrate; - - if (new_remb_bitrate < kSendThresholdPercent * last_send_bitrate_ / 100) { - // The new bitrate estimate is less than kSendThresholdPercent % of the - // last report. Send a REMB asap. - last_remb_time_ = TickTime::MillisecondTimestamp() - kRembSendIntervalMs; - } - } - bitrate_ = bitrate; - - // Calculate total receive bitrate estimate. - int64_t now = TickTime::MillisecondTimestamp(); - - if (now - last_remb_time_ < kRembSendIntervalMs) { - list_crit_->Leave(); - return; - } - last_remb_time_ = now; - - if (ssrcs.empty() || receive_modules_.empty()) { - list_crit_->Leave(); - return; - } - - // Send a REMB packet. - RtpRtcp* sender = NULL; - if (!rtcp_sender_.empty()) { - sender = rtcp_sender_.front(); - } else { - sender = receive_modules_.front(); - } - last_send_bitrate_ = bitrate_; - - list_crit_->Leave(); - - if (sender) { - sender->SetREMBData(bitrate_, ssrcs); - } -} - -} // namespace webrtc |