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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_INSTRUMENTED_VIDEO_ENCODER_WRAPPER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_INSTRUMENTED_VIDEO_ENCODER_WRAPPER_H_
#include <memory>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "base/thread_annotations.h"
#include "third_party/blink/renderer/platform/peerconnection/video_encoder_state_observer.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/webrtc/api/video_codecs/video_encoder.h"
namespace blink {
// InstrumentedVideoEncoderWrapper is webrtc::VideoEncoder that
// - delegates webrtc::VideoEncoder call to |wrapped_encoder_|,
// - delegates webrtc::EncodedImageCallback call to |callback_|,
// - notifies the wrapped encoder state within these calls to |state_observer_|.
class PLATFORM_EXPORT InstrumentedVideoEncoderWrapper
: public webrtc::VideoEncoder,
public webrtc::EncodedImageCallback {
public:
InstrumentedVideoEncoderWrapper(
int id,
std::unique_ptr<webrtc::VideoEncoder> wrapped_encoder,
VideoEncoderStateObserver* state_observer);
~InstrumentedVideoEncoderWrapper() override;
// webrtc::VideoEncoder implementations.
int InitEncode(const webrtc::VideoCodec* codec_settings,
const webrtc::VideoEncoder::Settings& settings) override;
int32_t RegisterEncodeCompleteCallback(
webrtc::EncodedImageCallback* callback) override;
int32_t Release() override;
int32_t Encode(
const webrtc::VideoFrame& frame,
const std::vector<webrtc::VideoFrameType>* frame_types) override;
void SetRates(const RateControlParameters& parameters) override;
void SetFecControllerOverride(
webrtc::FecControllerOverride* fec_controller_override) override;
void OnPacketLossRateUpdate(float packet_loss_rate) override;
void OnRttUpdate(int64_t rtt_ms) override;
void OnLossNotification(const LossNotification& loss_notification) override;
webrtc::VideoEncoder::EncoderInfo GetEncoderInfo() const override;
// webrtc::EncodedImageCallback implementations.
webrtc::EncodedImageCallback::Result OnEncodedImage(
const webrtc::EncodedImage& encoded_image,
const webrtc::CodecSpecificInfo* codec_specific_info) override;
void OnDroppedFrame(webrtc::EncodedImageCallback::DropReason reason) override;
private:
void ReportEncodeResult(
const VideoEncoderStateObserver::EncodeResult& result);
const int id_;
const raw_ptr<VideoEncoderStateObserver> state_observer_
GUARDED_BY_CONTEXT(encoder_sequence_);
const scoped_refptr<base::SequencedTaskRunner> encoder_sequence_runner_;
const std::unique_ptr<webrtc::VideoEncoder> wrapped_encoder_;
raw_ptr<webrtc::EncodedImageCallback> callback_;
// WebRTC encoder sequence.
SEQUENCE_CHECKER(encoder_sequence_);
// WeakPtr of this, bound to |encoder_sequence_runner_|.
base::WeakPtrFactory<InstrumentedVideoEncoderWrapper> weak_this_factory_{
this};
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_INSTRUMENTED_VIDEO_ENCODER_WRAPPER_H_
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