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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 VP8_ENCODER_DENOISING_H_
+#define VP8_ENCODER_DENOISING_H_
+
+#include "block.h"
+#include "vp8/common/loopfilter.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SUM_DIFF_THRESHOLD (16 * 16 * 2)
+#define SUM_DIFF_THRESHOLD_HIGH (600) // ~(16 * 16 * 1.5)
+#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);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // VP8_ENCODER_DENOISING_H_