14d1c9d968
The name EncoderRtcpFeedback is more appropriate because: 1. "Callback" implies a single function exposed, which is not the case. 2. We intend to add OnLossNotification() to the same class. Bug: webrtc:10501 Change-Id: I75b2e06eb070e85e872eba9fbc354aa4b68c7993 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/131289 Commit-Queue: Elad Alon <eladalon@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27490}
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "video/encoder_rtcp_feedback.h"
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#include "absl/types/optional.h"
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#include "rtc_base/checks.h"
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#include "rtc_base/experiments/keyframe_interval_settings.h"
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namespace webrtc {
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namespace {
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constexpr int kMinKeyframeSendIntervalMs = 300;
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} // namespace
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EncoderRtcpFeedback::EncoderRtcpFeedback(Clock* clock,
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const std::vector<uint32_t>& ssrcs,
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VideoStreamEncoderInterface* encoder)
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: clock_(clock),
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ssrcs_(ssrcs),
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video_stream_encoder_(encoder),
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time_last_intra_request_ms_(-1),
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min_keyframe_send_interval_ms_(
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KeyframeIntervalSettings::ParseFromFieldTrials()
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.MinKeyframeSendIntervalMs()
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.value_or(kMinKeyframeSendIntervalMs)) {
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RTC_DCHECK(!ssrcs.empty());
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}
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bool EncoderRtcpFeedback::HasSsrc(uint32_t ssrc) {
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for (uint32_t registered_ssrc : ssrcs_) {
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if (registered_ssrc == ssrc) {
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return true;
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}
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}
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return false;
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}
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void EncoderRtcpFeedback::OnReceivedIntraFrameRequest(uint32_t ssrc) {
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RTC_DCHECK(HasSsrc(ssrc));
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{
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int64_t now_ms = clock_->TimeInMilliseconds();
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rtc::CritScope lock(&crit_);
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if (time_last_intra_request_ms_ + min_keyframe_send_interval_ms_ > now_ms) {
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return;
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}
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time_last_intra_request_ms_ = now_ms;
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}
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// Always produce key frame for all streams.
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video_stream_encoder_->SendKeyFrame();
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}
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void EncoderRtcpFeedback::OnKeyFrameRequested(uint64_t channel_id) {
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if (channel_id != ssrcs_[0]) {
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RTC_LOG(LS_INFO) << "Key frame request on unknown channel id " << channel_id
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<< " expected " << ssrcs_[0];
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return;
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}
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video_stream_encoder_->SendKeyFrame();
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}
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} // namespace webrtc
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