119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP8_ENCODER_DENOISING_H_
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#define VP8_ENCODER_DENOISING_H_
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#include "block.h"
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#include "vp8/common/loopfilter.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SUM_DIFF_THRESHOLD 512
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#define SUM_DIFF_THRESHOLD_HIGH 600
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#define MOTION_MAGNITUDE_THRESHOLD (8*3)
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#define SUM_DIFF_THRESHOLD_UV (96) // (8 * 8 * 1.5)
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#define SUM_DIFF_THRESHOLD_HIGH_UV (8 * 8 * 2)
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#define SUM_DIFF_FROM_AVG_THRESH_UV (8 * 8 * 8)
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#define MOTION_MAGNITUDE_THRESHOLD_UV (8*3)
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#define MAX_GF_ARF_DENOISE_RANGE (8)
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enum vp8_denoiser_decision
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{
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COPY_BLOCK,
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FILTER_BLOCK
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};
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enum vp8_denoiser_filter_state {
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kNoFilter,
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kFilterZeroMV,
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kFilterNonZeroMV
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};
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enum vp8_denoiser_mode {
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kDenoiserOff,
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kDenoiserOnYOnly,
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kDenoiserOnYUV,
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kDenoiserOnYUVAggressive,
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kDenoiserOnAdaptive
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};
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typedef struct {
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// Scale factor on sse threshold above which no denoising is done.
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unsigned int scale_sse_thresh;
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// Scale factor on motion magnitude threshold above which no
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// denoising is done.
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unsigned int scale_motion_thresh;
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// Scale factor on motion magnitude below which we increase the strength of
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// the temporal filter (in function vp8_denoiser_filter).
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unsigned int scale_increase_filter;
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// Scale factor to bias to ZEROMV for denoising.
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unsigned int denoise_mv_bias;
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// Scale factor to bias to ZEROMV for coding mode selection.
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unsigned int pickmode_mv_bias;
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// Quantizer threshold below which we use the segmentation map to switch off
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// loop filter for blocks that have been coded as ZEROMV-LAST a certain number
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// (consec_zerolast) of consecutive frames. Note that the delta-QP is set to
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// 0 when segmentation map is used for shutting off loop filter.
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unsigned int qp_thresh;
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// Threshold for number of consecutive frames for blocks coded as ZEROMV-LAST.
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unsigned int consec_zerolast;
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// Threshold for amount of spatial blur on Y channel. 0 means no spatial blur.
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unsigned int spatial_blur;
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} denoise_params;
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typedef struct vp8_denoiser
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{
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YV12_BUFFER_CONFIG yv12_running_avg[MAX_REF_FRAMES];
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YV12_BUFFER_CONFIG yv12_mc_running_avg;
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// TODO(marpan): Should remove yv12_last_source and use vp8_lookahead_peak.
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YV12_BUFFER_CONFIG yv12_last_source;
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unsigned char* denoise_state;
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int num_mb_cols;
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int denoiser_mode;
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int threshold_aggressive_mode;
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int nmse_source_diff;
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int nmse_source_diff_count;
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int qp_avg;
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int qp_threshold_up;
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int qp_threshold_down;
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int bitrate_threshold;
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denoise_params denoise_pars;
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} VP8_DENOISER;
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int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height,
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int num_mb_rows, int num_mb_cols, int mode);
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void vp8_denoiser_free(VP8_DENOISER *denoiser);
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void vp8_denoiser_set_parameters(VP8_DENOISER *denoiser, int mode);
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void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser,
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MACROBLOCK *x,
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unsigned int best_sse,
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unsigned int zero_mv_sse,
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int recon_yoffset,
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int recon_uvoffset,
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loop_filter_info_n *lfi_n,
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int mb_row,
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int mb_col,
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int block_index,
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int consec_zero_last);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP8_ENCODER_DENOISING_H_
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