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/*
* Copyright (c) 2012 The WebM 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 VPX_VP8_ENCODER_DENOISING_H_
#define VPX_VP8_ENCODER_DENOISING_H_
#include "block.h"
#include "vp8/common/loopfilter.h"
#ifdef __cplusplus
extern "C" {
#endif
#define SUM_DIFF_THRESHOLD 512
#define SUM_DIFF_THRESHOLD_HIGH 600
#define MOTION_MAGNITUDE_THRESHOLD (8 * 3)
#define SUM_DIFF_THRESHOLD_UV (96) // (8 * 8 * 1.5)
#define SUM_DIFF_THRESHOLD_HIGH_UV (8 * 8 * 2)
#define SUM_DIFF_FROM_AVG_THRESH_UV (8 * 8 * 8)
#define MOTION_MAGNITUDE_THRESHOLD_UV (8 * 3)
#define MAX_GF_ARF_DENOISE_RANGE (8)
enum vp8_denoiser_decision { COPY_BLOCK, FILTER_BLOCK };
enum vp8_denoiser_filter_state { kNoFilter, kFilterZeroMV, kFilterNonZeroMV };
enum vp8_denoiser_mode {
kDenoiserOff,
kDenoiserOnYOnly,
kDenoiserOnYUV,
kDenoiserOnYUVAggressive,
kDenoiserOnAdaptive
};
typedef struct {
// Scale factor on sse threshold above which no denoising is done.
unsigned int scale_sse_thresh;
// Scale factor on motion magnitude threshold above which no
// denoising is done.
unsigned int scale_motion_thresh;
// Scale factor on motion magnitude below which we increase the strength of
// the temporal filter (in function vp8_denoiser_filter).
unsigned int scale_increase_filter;
// Scale factor to bias to ZEROMV for denoising.
unsigned int denoise_mv_bias;
// Scale factor to bias to ZEROMV for coding mode selection.
unsigned int pickmode_mv_bias;
// Quantizer threshold below which we use the segmentation map to switch off
// loop filter for blocks that have been coded as ZEROMV-LAST a certain number
// (consec_zerolast) of consecutive frames. Note that the delta-QP is set to
// 0 when segmentation map is used for shutting off loop filter.
unsigned int qp_thresh;
// Threshold for number of consecutive frames for blocks coded as ZEROMV-LAST.
unsigned int consec_zerolast;
// Threshold for amount of spatial blur on Y channel. 0 means no spatial blur.
unsigned int spatial_blur;
} denoise_params;
typedef struct vp8_denoiser {
YV12_BUFFER_CONFIG yv12_running_avg[MAX_REF_FRAMES];
YV12_BUFFER_CONFIG yv12_mc_running_avg;
// TODO(marpan): Should remove yv12_last_source and use vp8_lookahead_peak.
YV12_BUFFER_CONFIG yv12_last_source;
unsigned char *denoise_state;
int num_mb_cols;
int denoiser_mode;
int threshold_aggressive_mode;
int nmse_source_diff;
int nmse_source_diff_count;
int qp_avg;
int qp_threshold_up;
int qp_threshold_down;
int bitrate_threshold;
denoise_params denoise_pars;
} VP8_DENOISER;
int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height,
int num_mb_rows, int num_mb_cols, int mode);
void vp8_denoiser_free(VP8_DENOISER *denoiser);
void vp8_denoiser_set_parameters(VP8_DENOISER *denoiser, int mode);
void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser, MACROBLOCK *x,
unsigned int best_sse, unsigned int zero_mv_sse,
int recon_yoffset, int recon_uvoffset,
loop_filter_info_n *lfi_n, int mb_row, int mb_col,
int block_index, int consec_zero_last);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_VP8_ENCODER_DENOISING_H_
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