f6a804826c
QualityConvergenceController is a layer between VideoStreamEncoder and QualityConvergenceMonitor that takes care of the simulcast logic. Bug: chromium:328598314 Change-Id: Iad8a9d9138e69a60fd508a7ef038220947888f0a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/356420 Commit-Queue: Johannes Kron <kron@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42642}
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*
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* Copyright (c) 2024 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/quality_convergence_controller.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace {
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// TODO(https://crbug.com/328598314): Remove default values once HW encoders
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// correctly report the minimum QP value. These thresholds correspond to the
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// default configurations used for the software encoders.
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constexpr int kVp8DefaultStaticQpThreshold = 15;
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constexpr int kVp9DefaultStaticQpThreshold = 32;
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constexpr int kAv1DefaultStaticQpThreshold = 40;
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int GetDefaultStaticQpThreshold(VideoCodecType codec) {
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switch (codec) {
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case kVideoCodecVP8:
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return kVp8DefaultStaticQpThreshold;
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case kVideoCodecVP9:
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return kVp9DefaultStaticQpThreshold;
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case kVideoCodecAV1:
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return kAv1DefaultStaticQpThreshold;
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case kVideoCodecGeneric:
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case kVideoCodecH264:
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case kVideoCodecH265:
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// -1 will effectively disable the static QP threshold since QP values are
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// always >= 0.
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return -1;
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}
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}
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} // namespace
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void QualityConvergenceController::Initialize(
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int number_of_layers,
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absl::optional<int> static_qp_threshold,
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VideoCodecType codec,
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const FieldTrialsView& trials) {
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RTC_CHECK(number_of_layers > 0);
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number_of_layers_ = number_of_layers;
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convergence_monitors_.clear();
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int qp_threshold =
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static_qp_threshold.value_or(GetDefaultStaticQpThreshold(codec));
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for (int i = 0; i < number_of_layers_; ++i) {
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convergence_monitors_.push_back(
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QualityConvergenceMonitor::Create(qp_threshold, codec, trials));
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}
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initialized_ = true;
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}
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bool QualityConvergenceController::AddSampleAndCheckTargetQuality(
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int layer_index,
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int qp,
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bool is_refresh_frame) {
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RTC_CHECK(initialized_);
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if (layer_index < 0 || layer_index >= number_of_layers_) {
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return false;
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}
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convergence_monitors_[layer_index]->AddSample(qp, is_refresh_frame);
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return convergence_monitors_[layer_index]->AtTargetQuality();
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}
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} // namespace webrtc
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