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 VPX_VP9_ENCODER_VP9_DENOISER_H_
12 #define VPX_VP9_ENCODER_VP9_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 unsigned int current_denoiser_frame;
54 VP9_DENOISER_LEVEL denoising_level;
55 VP9_DENOISER_LEVEL prev_denoising_level;
56 } VP9_DENOISER;
57
58 typedef struct {
59 int64_t zero_last_cost_orig;
60 int *ref_frame_cost;
61 int_mv (*frame_mv)[MAX_REF_FRAMES];
62 int reuse_inter_pred;
63 TX_SIZE best_tx_size;
64 PREDICTION_MODE best_mode;
65 MV_REFERENCE_FRAME best_ref_frame;
66 INTERP_FILTER best_pred_filter;
67 uint8_t best_mode_skip_txfm;
68 } VP9_PICKMODE_CTX_DEN;
69
70 struct VP9_COMP;
71 struct SVC;
72
73 void vp9_denoiser_update_frame_info(
74 VP9_DENOISER *denoiser, YV12_BUFFER_CONFIG src, struct SVC *svc,
75 FRAME_TYPE frame_type, int refresh_alt_ref_frame, int refresh_golden_frame,
76 int refresh_last_frame, int alt_fb_idx, int gld_fb_idx, int lst_fb_idx,
77 int resized, int svc_refresh_denoiser_buffers, int second_spatial_layer);
78
79 void vp9_denoiser_denoise(struct VP9_COMP *cpi, MACROBLOCK *mb, int mi_row,
80 int mi_col, BLOCK_SIZE bs, PICK_MODE_CONTEXT *ctx,
81 VP9_DENOISER_DECISION *denoiser_decision,
82 int use_gf_temporal_ref);
83
84 void vp9_denoiser_reset_frame_stats(PICK_MODE_CONTEXT *ctx);
85
86 void vp9_denoiser_update_frame_stats(MODE_INFO *mi, unsigned int sse,
87 PREDICTION_MODE mode,
88 PICK_MODE_CONTEXT *ctx);
89
90 int vp9_denoiser_realloc_svc(VP9_COMMON *cm, VP9_DENOISER *denoiser,
91 struct SVC *svc, int svc_buf_shift,
92 int refresh_alt, int refresh_gld, int refresh_lst,
93 int alt_fb_idx, int gld_fb_idx, int lst_fb_idx);
94
95 int vp9_denoiser_alloc(VP9_COMMON *cm, struct SVC *svc, VP9_DENOISER *denoiser,
96 int use_svc, int noise_sen, int width, int height,
97 int ssx, int ssy,
98 #if CONFIG_VP9_HIGHBITDEPTH
99 int use_highbitdepth,
100 #endif
101 int border);
102
103 #if CONFIG_VP9_TEMPORAL_DENOISING
104 // This function is used by both c and sse2 denoiser implementations.
105 // Define it as a static function within the scope where vp9_denoiser.h
106 // is referenced.
total_adj_strong_thresh(BLOCK_SIZE bs,int increase_denoising)107 static INLINE int total_adj_strong_thresh(BLOCK_SIZE bs,
108 int increase_denoising) {
109 return (1 << num_pels_log2_lookup[bs]) * (increase_denoising ? 3 : 2);
110 }
111 #endif
112
113 void vp9_denoiser_free(VP9_DENOISER *denoiser);
114
115 void vp9_denoiser_set_noise_level(struct VP9_COMP *const cpi, int noise_level);
116
117 void vp9_denoiser_reset_on_first_frame(struct VP9_COMP *const cpi);
118
119 int64_t vp9_scale_part_thresh(int64_t threshold, VP9_DENOISER_LEVEL noise_level,
120 int content_state, int temporal_layer_id);
121
122 int64_t vp9_scale_acskip_thresh(int64_t threshold,
123 VP9_DENOISER_LEVEL noise_level, int abs_sumdiff,
124 int temporal_layer_id);
125
126 void vp9_denoiser_update_ref_frame(struct VP9_COMP *const cpi);
127
128 #ifdef __cplusplus
129 } // extern "C"
130 #endif
131
132 #endif // VPX_VP9_ENCODER_VP9_DENOISER_H_
133