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/*
* Copyright (c) 2018 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.
*/
#ifndef TEST_VIDEO_ENCODER_PROXY_FACTORY_H_
#define TEST_VIDEO_ENCODER_PROXY_FACTORY_H_
#include <algorithm>
#include <cstdint>
#include <memory>
#include <optional>
#include <vector>
#include "api/environment/environment.h"
#include "api/fec_controller_override.h"
#include "api/units/data_rate.h"
#include "api/video/render_resolution.h"
#include "api/video/video_frame.h"
#include "api/video/video_frame_type.h"
#include "api/video_codecs/sdp_video_format.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_encoder.h"
#include "api/video_codecs/video_encoder_factory.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace test {
namespace {
const VideoEncoder::Capabilities kCapabilities(false);
}
// An encoder factory with a single underlying VideoEncoder object,
// intended for test purposes. Each call to CreateVideoEncoder returns
// a proxy for the same encoder, typically an instance of FakeEncoder.
class VideoEncoderProxyFactory : public VideoEncoderFactory {
public:
explicit VideoEncoderProxyFactory(VideoEncoder* encoder)
: VideoEncoderProxyFactory(encoder, nullptr) {}
explicit VideoEncoderProxyFactory(VideoEncoder* encoder,
EncoderSelectorInterface* encoder_selector)
: encoder_(encoder),
encoder_selector_(encoder_selector),
num_simultaneous_encoder_instances_(0),
max_num_simultaneous_encoder_instances_(0) {}
// Unused by tests.
std::vector<SdpVideoFormat> GetSupportedFormats() const override {
RTC_DCHECK_NOTREACHED();
return {};
}
std::unique_ptr<VideoEncoder> Create(const Environment& env,
const SdpVideoFormat& format) override {
++num_simultaneous_encoder_instances_;
max_num_simultaneous_encoder_instances_ =
std::max(max_num_simultaneous_encoder_instances_,
num_simultaneous_encoder_instances_);
return std::make_unique<EncoderProxy>(encoder_, this);
}
std::unique_ptr<EncoderSelectorInterface> GetEncoderSelector()
const override {
if (encoder_selector_ != nullptr) {
return std::make_unique<EncoderSelectorProxy>(encoder_selector_);
}
return nullptr;
}
int GetMaxNumberOfSimultaneousEncoderInstances() {
return max_num_simultaneous_encoder_instances_;
}
protected:
void OnDestroyVideoEncoder() {
RTC_CHECK_GT(num_simultaneous_encoder_instances_, 0);
--num_simultaneous_encoder_instances_;
}
// Wrapper class, since CreateVideoEncoder needs to surrender
// ownership to the object it returns.
class EncoderProxy final : public VideoEncoder {
public:
explicit EncoderProxy(VideoEncoder* encoder,
VideoEncoderProxyFactory* encoder_factory)
: encoder_(encoder), encoder_factory_(encoder_factory) {}
~EncoderProxy() { encoder_factory_->OnDestroyVideoEncoder(); }
private:
void SetFecControllerOverride(
FecControllerOverride* fec_controller_override) override {
encoder_->SetFecControllerOverride(fec_controller_override);
}
int32_t Encode(const VideoFrame& input_image,
const std::vector<VideoFrameType>* frame_types) override {
return encoder_->Encode(input_image, frame_types);
}
int32_t InitEncode(const VideoCodec* config,
const Settings& settings) override {
return encoder_->InitEncode(config, settings);
}
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override {
return encoder_->RegisterEncodeCompleteCallback(callback);
}
int32_t Release() override { return encoder_->Release(); }
void SetRates(const RateControlParameters& parameters) override {
encoder_->SetRates(parameters);
}
VideoEncoder::EncoderInfo GetEncoderInfo() const override {
return encoder_->GetEncoderInfo();
}
VideoEncoder* const encoder_;
VideoEncoderProxyFactory* const encoder_factory_;
};
class EncoderSelectorProxy final : public EncoderSelectorInterface {
public:
explicit EncoderSelectorProxy(EncoderSelectorInterface* encoder_selector)
: encoder_selector_(encoder_selector) {}
void OnCurrentEncoder(const SdpVideoFormat& format) override {
encoder_selector_->OnCurrentEncoder(format);
}
std::optional<SdpVideoFormat> OnAvailableBitrate(
const DataRate& rate) override {
return encoder_selector_->OnAvailableBitrate(rate);
}
std::optional<SdpVideoFormat> OnResolutionChange(
const RenderResolution& resolution) override {
return encoder_selector_->OnResolutionChange(resolution);
}
std::optional<SdpVideoFormat> OnEncoderBroken() override {
return encoder_selector_->OnEncoderBroken();
}
private:
EncoderSelectorInterface* const encoder_selector_;
};
VideoEncoder* const encoder_;
EncoderSelectorInterface* const encoder_selector_;
int num_simultaneous_encoder_instances_;
int max_num_simultaneous_encoder_instances_;
};
} // namespace test
} // namespace webrtc
#endif // TEST_VIDEO_ENCODER_PROXY_FACTORY_H_
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