Source code
Revision control
Copy as Markdown
Other Tools
/*
* Copyright 2020 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 "video/adaptation/quality_scaler_resource.h"
#include <utility>
#include "api/field_trials_view.h"
#include "rtc_base/checks.h"
#include "rtc_base/experiments/balanced_degradation_settings.h"
#include "rtc_base/time_utils.h"
namespace webrtc {
// static
rtc::scoped_refptr<QualityScalerResource> QualityScalerResource::Create() {
return rtc::make_ref_counted<QualityScalerResource>();
}
QualityScalerResource::QualityScalerResource()
: VideoStreamEncoderResource("QualityScalerResource"),
quality_scaler_(nullptr) {}
QualityScalerResource::~QualityScalerResource() {
RTC_DCHECK(!quality_scaler_);
}
bool QualityScalerResource::is_started() const {
RTC_DCHECK_RUN_ON(encoder_queue());
return quality_scaler_.get();
}
void QualityScalerResource::StartCheckForOveruse(
VideoEncoder::QpThresholds qp_thresholds,
const FieldTrialsView& field_trials) {
RTC_DCHECK_RUN_ON(encoder_queue());
RTC_DCHECK(!is_started());
quality_scaler_ = std::make_unique<QualityScaler>(
this, std::move(qp_thresholds), field_trials);
}
void QualityScalerResource::StopCheckForOveruse() {
RTC_DCHECK_RUN_ON(encoder_queue());
RTC_DCHECK(is_started());
// Ensure we have no pending callbacks. This makes it safe to destroy the
// QualityScaler and even task queues with tasks in-flight.
quality_scaler_.reset();
}
void QualityScalerResource::SetQpThresholds(
VideoEncoder::QpThresholds qp_thresholds) {
RTC_DCHECK_RUN_ON(encoder_queue());
RTC_DCHECK(is_started());
quality_scaler_->SetQpThresholds(std::move(qp_thresholds));
}
void QualityScalerResource::OnEncodeCompleted(const EncodedImage& encoded_image,
int64_t time_sent_in_us) {
RTC_DCHECK_RUN_ON(encoder_queue());
if (quality_scaler_ && encoded_image.qp_ >= 0) {
quality_scaler_->ReportQp(encoded_image.qp_, time_sent_in_us);
}
}
void QualityScalerResource::OnFrameDropped(
EncodedImageCallback::DropReason reason) {
RTC_DCHECK_RUN_ON(encoder_queue());
if (!quality_scaler_)
return;
switch (reason) {
case EncodedImageCallback::DropReason::kDroppedByMediaOptimizations:
quality_scaler_->ReportDroppedFrameByMediaOpt();
break;
case EncodedImageCallback::DropReason::kDroppedByEncoder:
quality_scaler_->ReportDroppedFrameByEncoder();
break;
}
}
void QualityScalerResource::OnReportQpUsageHigh() {
OnResourceUsageStateMeasured(ResourceUsageState::kOveruse);
}
void QualityScalerResource::OnReportQpUsageLow() {
OnResourceUsageStateMeasured(ResourceUsageState::kUnderuse);
}
} // namespace webrtc