1 /*
2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef VP9_ENCODER_DENOISER_H_
12 #define VP9_ENCODER_DENOISER_H_
13
14 #include "vp9/encoder/vp9_block.h"
15 #include "vp9/encoder/vp9_skin_detection.h"
16 #include "vpx_scale/yv12config.h"
17
18 #ifdef __cplusplus
19 extern "C" {
20 #endif
21
22 #define MOTION_MAGNITUDE_THRESHOLD (8 * 3)
23
24 // Denoiser is used in non svc real-time mode which does not use alt-ref, so no
25 // need to allocate for it, and hence we need MAX_REF_FRAME - 1
26 #define NONSVC_REF_FRAMES MAX_REF_FRAMES - 1
27
28 // Number of frame buffers when SVC is used. [0] for current denoised buffer and
29 // [1..8] for REF_FRAMES
30 #define SVC_REF_FRAMES 9
31
32 typedef enum vp9_denoiser_decision {
33 COPY_BLOCK,
34 FILTER_BLOCK,
35 FILTER_ZEROMV_BLOCK
36 } VP9_DENOISER_DECISION;
37
38 typedef enum vp9_denoiser_level {
39 kDenLowLow,
40 kDenLow,
41 kDenMedium,
42 kDenHigh
43 } VP9_DENOISER_LEVEL;
44
45 typedef struct vp9_denoiser {
46 YV12_BUFFER_CONFIG *running_avg_y;
47 YV12_BUFFER_CONFIG *mc_running_avg_y;
48 YV12_BUFFER_CONFIG last_source;
49 int frame_buffer_initialized;
50 int reset;
51 int num_ref_frames;
52 int num_layers;
53 VP9_DENOISER_LEVEL denoising_level;
54 VP9_DENOISER_LEVEL prev_denoising_level;
55 } VP9_DENOISER;
56
57 typedef struct {
58 int64_t zero_last_cost_orig;
59 int *ref_frame_cost;
60 int_mv (*frame_mv)[MAX_REF_FRAMES];
61 int reuse_inter_pred;
62 TX_SIZE best_tx_size;
63 PREDICTION_MODE best_mode;
64 MV_REFERENCE_FRAME best_ref_frame;
65 INTERP_FILTER best_pred_filter;
66 uint8_t best_mode_skip_txfm;
67 } VP9_PICKMODE_CTX_DEN;
68
69 struct VP9_COMP;
70 struct SVC;
71
72 void vp9_denoiser_update_frame_info(
73 VP9_DENOISER *denoiser, YV12_BUFFER_CONFIG src, FRAME_TYPE frame_type,
74 int refresh_alt_ref_frame, int refresh_golden_frame, int refresh_last_frame,
75 int alt_fb_idx, int gld_fb_idx, int lst_fb_idx, int resized,
76 int svc_base_is_key, int second_spatial_layer);
77
78 void vp9_denoiser_denoise(struct VP9_COMP *cpi, MACROBLOCK *mb, int mi_row,
79 int mi_col, BLOCK_SIZE bs, PICK_MODE_CONTEXT *ctx,
80 VP9_DENOISER_DECISION *denoiser_decision);
81
82 void vp9_denoiser_reset_frame_stats(PICK_MODE_CONTEXT *ctx);
83
84 void vp9_denoiser_update_frame_stats(MODE_INFO *mi, unsigned int sse,
85 PREDICTION_MODE mode,
86 PICK_MODE_CONTEXT *ctx);
87
88 int vp9_denoiser_realloc_svc(VP9_COMMON *cm, VP9_DENOISER *denoiser,
89 int svc_buf_shift, int refresh_alt,
90 int refresh_gld, int refresh_lst, int alt_fb_idx,
91 int gld_fb_idx, int lst_fb_idx);
92
93 int vp9_denoiser_alloc(VP9_COMMON *cm, struct SVC *svc, VP9_DENOISER *denoiser,
94 int use_svc, int noise_sen, int width, int height,
95 int ssx, int ssy,
96 #if CONFIG_VP9_HIGHBITDEPTH
97 int use_highbitdepth,
98 #endif
99 int border);
100
101 #if CONFIG_VP9_TEMPORAL_DENOISING
102 // This function is used by both c and sse2 denoiser implementations.
103 // Define it as a static function within the scope where vp9_denoiser.h
104 // is referenced.
total_adj_strong_thresh(BLOCK_SIZE bs,int increase_denoising)105 static INLINE int total_adj_strong_thresh(BLOCK_SIZE bs,
106 int increase_denoising) {
107 return (1 << num_pels_log2_lookup[bs]) * (increase_denoising ? 3 : 2);
108 }
109 #endif
110
111 void vp9_denoiser_free(VP9_DENOISER *denoiser);
112
113 void vp9_denoiser_set_noise_level(VP9_DENOISER *denoiser, int noise_level);
114
115 int64_t vp9_scale_part_thresh(int64_t threshold, VP9_DENOISER_LEVEL noise_level,
116 int content_state, int temporal_layer_id);
117
118 int64_t vp9_scale_acskip_thresh(int64_t threshold,
119 VP9_DENOISER_LEVEL noise_level, int abs_sumdiff,
120 int temporal_layer_id);
121
122 #ifdef __cplusplus
123 } // extern "C"
124 #endif
125
126 #endif // VP9_ENCODER_DENOISER_H_
127