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/*
* Copyright (c) 2015 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 MODULES_VIDEO_PROCESSING_VIDEO_DENOISER_H_
#define MODULES_VIDEO_PROCESSING_VIDEO_DENOISER_H_
#include <memory>
#include "api/scoped_refptr.h"
#include "api/video/video_frame_buffer.h"
#include "common_video/include/video_frame_buffer_pool.h"
#include "modules/video_processing/util/denoiser_filter.h"
#include "modules/video_processing/util/noise_estimation.h"
#include "modules/video_processing/util/skin_detection.h"
namespace webrtc {
class VideoDenoiser {
public:
explicit VideoDenoiser(bool runtime_cpu_detection);
rtc::scoped_refptr<I420BufferInterface> DenoiseFrame(
rtc::scoped_refptr<I420BufferInterface> frame,
bool noise_estimation_enabled);
private:
void DenoiserReset(rtc::scoped_refptr<I420BufferInterface> frame);
// Check the mb position, return 1: close to the frame center (between 1/8
// and 7/8 of width/height), 3: close to the border (out of 1/16 and 15/16
// of width/height), 2: in between.
int PositionCheck(int mb_row, int mb_col, int noise_level);
// To reduce false detection in moving object detection (MOD).
void ReduceFalseDetection(const std::unique_ptr<uint8_t[]>& d_status,
std::unique_ptr<uint8_t[]>* d_status_red,
int noise_level);
// Return whether a block might cause trailing artifact by checking if one of
// its neighbor blocks is a moving edge block.
bool IsTrailingBlock(const std::unique_ptr<uint8_t[]>& d_status,
int mb_row,
int mb_col);
// Copy input blocks to dst buffer on moving object blocks (MOB).
void CopySrcOnMOB(const uint8_t* y_src,
int stride_src,
uint8_t* y_dst,
int stride_dst);
// Copy luma margin blocks when frame width/height not divisible by 16.
void CopyLumaOnMargin(const uint8_t* y_src,
int stride_src,
uint8_t* y_dst,
int stride_dst);
int width_;
int height_;
int mb_rows_;
int mb_cols_;
CpuType cpu_type_;
std::unique_ptr<DenoiserFilter> filter_;
std::unique_ptr<NoiseEstimation> ne_;
// 1 for moving edge block, 0 for static block.
std::unique_ptr<uint8_t[]> moving_edge_;
// 1 for moving object block, 0 for static block.
std::unique_ptr<uint8_t[]> moving_object_;
// x_density_ and y_density_ are used in MOD process.
std::unique_ptr<uint8_t[]> x_density_;
std::unique_ptr<uint8_t[]> y_density_;
// Save the return values by MbDenoise for each block.
std::unique_ptr<DenoiserDecision[]> mb_filter_decision_;
VideoFrameBufferPool buffer_pool_;
rtc::scoped_refptr<I420BufferInterface> prev_buffer_;
};
} // namespace webrtc
#endif // MODULES_VIDEO_PROCESSING_VIDEO_DENOISER_H_
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