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/*
* Copyright (c) 2013 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_FAKE_ENCODER_H_
#define TEST_FAKE_ENCODER_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <vector>
#include "api/fec_controller_override.h"
#include "api/task_queue/task_queue_factory.h"
#include "api/video/encoded_image.h"
#include "api/video/video_bitrate_allocation.h"
#include "api/video/video_frame.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_encoder.h"
#include "modules/include/module_common_types.h"
#include "modules/video_coding/include/video_codec_interface.h"
#include "rtc_base/critical_section.h"
#include "rtc_base/synchronization/sequence_checker.h"
#include "rtc_base/thread_annotations.h"
#include "system_wrappers/include/clock.h"
namespace webrtc {
namespace test {
class FakeEncoder : public VideoEncoder {
public:
explicit FakeEncoder(Clock* clock);
virtual ~FakeEncoder() = default;
// Sets max bitrate. Not thread-safe, call before registering the encoder.
void SetMaxBitrate(int max_kbps);
void SetFecControllerOverride(
FecControllerOverride* fec_controller_override) override;
int32_t InitEncode(const VideoCodec* config,
const Settings& settings) override;
int32_t Encode(const VideoFrame& input_image,
const std::vector<VideoFrameType>* frame_types) override;
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override;
int32_t Release() override;
void SetRates(const RateControlParameters& parameters) override;
int GetConfiguredInputFramerate() const;
EncoderInfo GetEncoderInfo() const override;
static const char* kImplementationName;
protected:
struct FrameInfo {
bool keyframe;
struct SpatialLayer {
SpatialLayer() = default;
SpatialLayer(int size, int temporal_id)
: size(size), temporal_id(temporal_id) {}
// Size of a current frame in the layer.
int size = 0;
// Temporal index of a current frame in the layer.
int temporal_id = 0;
};
std::vector<SpatialLayer> layers;
};
FrameInfo NextFrame(const std::vector<VideoFrameType>* frame_types,
bool keyframe,
uint8_t num_simulcast_streams,
const VideoBitrateAllocation& target_bitrate,
SimulcastStream simulcast_streams[kMaxSimulcastStreams],
int framerate);
// Called before the frame is passed to callback_->OnEncodedImage, to let
// subclasses fill out codec_specific, possibly modify encodedImage.
// Returns an RTPFragmentationHeader, if needed by the codec.
virtual std::unique_ptr<RTPFragmentationHeader> EncodeHook(
EncodedImage* encoded_image,
CodecSpecificInfo* codec_specific);
FrameInfo last_frame_info_ RTC_GUARDED_BY(crit_sect_);
Clock* const clock_;
VideoCodec config_ RTC_GUARDED_BY(crit_sect_);
EncodedImageCallback* callback_ RTC_GUARDED_BY(crit_sect_);
RateControlParameters current_rate_settings_ RTC_GUARDED_BY(crit_sect_);
int max_target_bitrate_kbps_ RTC_GUARDED_BY(crit_sect_);
bool pending_keyframe_ RTC_GUARDED_BY(crit_sect_);
uint32_t counter_ RTC_GUARDED_BY(crit_sect_);
rtc::CriticalSection crit_sect_;
bool used_layers_[kMaxSimulcastStreams];
// Current byte debt to be payed over a number of frames.
// The debt is acquired by keyframes overshooting the bitrate target.
size_t debt_bytes_;
};
class FakeH264Encoder : public FakeEncoder {
public:
explicit FakeH264Encoder(Clock* clock);
virtual ~FakeH264Encoder() = default;
private:
std::unique_ptr<RTPFragmentationHeader> EncodeHook(
EncodedImage* encoded_image,
CodecSpecificInfo* codec_specific) override;
int idr_counter_ RTC_GUARDED_BY(local_crit_sect_);
rtc::CriticalSection local_crit_sect_;
};
class DelayedEncoder : public test::FakeEncoder {
public:
DelayedEncoder(Clock* clock, int delay_ms);
virtual ~DelayedEncoder() = default;
void SetDelay(int delay_ms);
int32_t Encode(const VideoFrame& input_image,
const std::vector<VideoFrameType>* frame_types) override;
private:
int delay_ms_ RTC_GUARDED_BY(sequence_checker_);
SequenceChecker sequence_checker_;
};
// This class implements a multi-threaded fake encoder by posting
// FakeH264Encoder::Encode(.) tasks to |queue1_| and |queue2_|, in an
// alternating fashion. The class itself does not need to be thread safe,
// as it is called from the task queue in VideoStreamEncoder.
class MultithreadedFakeH264Encoder : public test::FakeH264Encoder {
public:
MultithreadedFakeH264Encoder(Clock* clock,
TaskQueueFactory* task_queue_factory);
virtual ~MultithreadedFakeH264Encoder() = default;
int32_t InitEncode(const VideoCodec* config,
const Settings& settings) override;
int32_t Encode(const VideoFrame& input_image,
const std::vector<VideoFrameType>* frame_types) override;
int32_t EncodeCallback(const VideoFrame& input_image,
const std::vector<VideoFrameType>* frame_types);
int32_t Release() override;
protected:
class EncodeTask;
TaskQueueFactory* const task_queue_factory_;
int current_queue_ RTC_GUARDED_BY(sequence_checker_);
std::unique_ptr<TaskQueueBase, TaskQueueDeleter> queue1_
RTC_GUARDED_BY(sequence_checker_);
std::unique_ptr<TaskQueueBase, TaskQueueDeleter> queue2_
RTC_GUARDED_BY(sequence_checker_);
SequenceChecker sequence_checker_;
};
} // namespace test
} // namespace webrtc
#endif // TEST_FAKE_ENCODER_H_