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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_SIMULCAST_ADAPTER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_INSTRUMENTED_SIMULCAST_ADAPTER_H_
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/webrtc/api/video_codecs/video_encoder.h"
#include "third_party/webrtc/media/engine/simulcast_encoder_adapter.h"
namespace webrtc {
class VideoEncoderFactory;
} // namespace webrtc
namespace blink {
class VideoEncoderStateObserver;
// InstrumentedSimulcastAdapter is webrtc::SimulcastEncoderAdapter with
// customized factories. It doesn't override webrtc::SimulcastEncoderAdapter
// functions except destructor.
// The factory, |primary_factory_adapter_| or |secondary_factory_adapter_|,
// creates blink::InstrumenedVideoEncoderWrapper which wraps an encoder created
// by |primary_encoder_factory| or |secondate_encoder_factory| and has a
// reference to |encoder_state_observer_|. Therefore, |encoder_state_observer_|
// observes all the encoder states used in webrtc::SimulcastEncoderAdapter. This
// class owns |encoder_state_observer_| and thus must outlive the created
// encoders.
class PLATFORM_EXPORT InstrumentedSimulcastAdapter
: public webrtc::SimulcastEncoderAdapter {
public:
static std::unique_ptr<InstrumentedSimulcastAdapter> Create(
const webrtc::Environment& env,
webrtc::VideoEncoderFactory* primary_encoder_factory,
webrtc::VideoEncoderFactory* secondate_encoder_factory,
std::unique_ptr<VideoEncoderStateObserver> encoder_state_observer,
const webrtc::SdpVideoFormat& format);
~InstrumentedSimulcastAdapter() override;
private:
class EncoderFactoryAdapter;
InstrumentedSimulcastAdapter(
const webrtc::Environment& env,
std::unique_ptr<EncoderFactoryAdapter> primary_factory_adapter,
std::unique_ptr<EncoderFactoryAdapter> secondary_factory_adapter,
std::unique_ptr<VideoEncoderStateObserver> encoder_state_observer,
const webrtc::SdpVideoFormat& format);
const std::unique_ptr<VideoEncoderStateObserver> encoder_state_observer_;
const std::unique_ptr<EncoderFactoryAdapter> primary_factory_adapter_;
const std::unique_ptr<EncoderFactoryAdapter> secondary_factory_adapter_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_INSTRUMENTED_SIMULCAST_ADAPTER_H_
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