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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/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 "common_types.h" // NOLINT(build/include)
#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/sequenced_task_checker.h"
#include "rtc_base/task_queue.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);
FakeEncoder(Clock* clock, size_t buffer_size);
virtual ~FakeEncoder() = default;
// Sets max bitrate. Not thread-safe, call before registering the encoder.
void SetMaxBitrate(int max_kbps);
int32_t InitEncode(const VideoCodec* config,
int32_t number_of_cores,
size_t max_payload_size) override;
int32_t Encode(const VideoFrame& input_image,
const CodecSpecificInfo* codec_specific_info,
const std::vector<FrameType>* frame_types) override;
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override;
int32_t Release() override;
int32_t SetRateAllocation(const VideoBitrateAllocation& rate_allocation,
uint32_t framerate) 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<FrameType>* frame_types,
bool keyframe,
uint8_t num_simulcast_streams,
const VideoBitrateAllocation& target_bitrate,
SimulcastStream simulcast_streams[kMaxSimulcastStreams],
int framerate);
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_);
VideoBitrateAllocation target_bitrate_ RTC_GUARDED_BY(crit_sect_);
int configured_input_framerate_ 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_;
std::vector<uint8_t> encoded_buffer_;
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 EncodedImageCallback {
public:
explicit FakeH264Encoder(Clock* clock);
virtual ~FakeH264Encoder() = default;
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override;
Result OnEncodedImage(const EncodedImage& encodedImage,
const CodecSpecificInfo* codecSpecificInfo,
const RTPFragmentationHeader* fragments) override;
private:
EncodedImageCallback* callback_ RTC_GUARDED_BY(local_crit_sect_);
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 CodecSpecificInfo* codec_specific_info,
const std::vector<FrameType>* frame_types) override;
private:
int delay_ms_ RTC_GUARDED_BY(sequence_checker_);
rtc::SequencedTaskChecker 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:
explicit MultithreadedFakeH264Encoder(Clock* clock);
virtual ~MultithreadedFakeH264Encoder() = default;
int32_t InitEncode(const VideoCodec* config,
int32_t number_of_cores,
size_t max_payload_size) override;
int32_t Encode(const VideoFrame& input_image,
const CodecSpecificInfo* codec_specific_info,
const std::vector<FrameType>* frame_types) override;
int32_t EncodeCallback(const VideoFrame& input_image,
const CodecSpecificInfo* codec_specific_info,
const std::vector<FrameType>* frame_types);
int32_t Release() override;
protected:
class EncodeTask;
int current_queue_ RTC_GUARDED_BY(sequence_checker_);
std::unique_ptr<rtc::TaskQueue> queue1_ RTC_GUARDED_BY(sequence_checker_);
std::unique_ptr<rtc::TaskQueue> queue2_ RTC_GUARDED_BY(sequence_checker_);
rtc::SequencedTaskChecker sequence_checker_;
};
} // namespace test
} // namespace webrtc
#endif // TEST_FAKE_ENCODER_H_