1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* Copyright (c) 2010 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_VP9_COMMON_VP9_LOOPFILTER_H_
#define VPX_VP9_COMMON_VP9_LOOPFILTER_H_
#include "vpx_ports/mem.h"
#include "./vpx_config.h"
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_seg_common.h"
#ifdef __cplusplus
extern "C" {
#endif
#define MAX_LOOP_FILTER 63
#define MAX_SHARPNESS 7
#define SIMD_WIDTH 16
#define MAX_REF_LF_DELTAS 4
#define MAX_MODE_LF_DELTAS 2
enum lf_path {
LF_PATH_420,
LF_PATH_444,
LF_PATH_SLOW,
};
// Need to align this structure so when it is declared and
// passed it can be loaded into vector registers.
typedef struct {
DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, mblim[SIMD_WIDTH]);
DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, lim[SIMD_WIDTH]);
DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, hev_thr[SIMD_WIDTH]);
} loop_filter_thresh;
typedef struct {
loop_filter_thresh lfthr[MAX_LOOP_FILTER + 1];
uint8_t lvl[MAX_SEGMENTS][MAX_REF_FRAMES][MAX_MODE_LF_DELTAS];
} loop_filter_info_n;
// This structure holds bit masks for all 8x8 blocks in a 64x64 region.
// Each 1 bit represents a position in which we want to apply the loop filter.
// Left_ entries refer to whether we apply a filter on the border to the
// left of the block. Above_ entries refer to whether or not to apply a
// filter on the above border. Int_ entries refer to whether or not to
// apply borders on the 4x4 edges within the 8x8 block that each bit
// represents.
// Since each transform is accompanied by a potentially different type of
// loop filter there is a different entry in the array for each transform size.
typedef struct {
uint64_t left_y[TX_SIZES];
uint64_t above_y[TX_SIZES];
uint64_t int_4x4_y;
uint16_t left_uv[TX_SIZES];
uint16_t above_uv[TX_SIZES];
uint16_t int_4x4_uv;
uint8_t lfl_y[64];
} LOOP_FILTER_MASK;
struct loopfilter {
int filter_level;
int last_filt_level;
int sharpness_level;
int last_sharpness_level;
uint8_t mode_ref_delta_enabled;
uint8_t mode_ref_delta_update;
// 0 = Intra, Last, GF, ARF
signed char ref_deltas[MAX_REF_LF_DELTAS];
signed char last_ref_deltas[MAX_REF_LF_DELTAS];
// 0 = ZERO_MV, MV
signed char mode_deltas[MAX_MODE_LF_DELTAS];
signed char last_mode_deltas[MAX_MODE_LF_DELTAS];
LOOP_FILTER_MASK *lfm;
int lfm_stride;
};
/* assorted loopfilter functions which get used elsewhere */
struct VP9Common;
struct macroblockd;
struct VP9LfSyncData;
// This function sets up the bit masks for the entire 64x64 region represented
// by mi_row, mi_col.
void vp9_setup_mask(struct VP9Common *const cm, const int mi_row,
const int mi_col, MODE_INFO **mi8x8,
const int mode_info_stride, LOOP_FILTER_MASK *lfm);
void vp9_filter_block_plane_ss00(struct VP9Common *const cm,
struct macroblockd_plane *const plane,
int mi_row, LOOP_FILTER_MASK *lfm);
void vp9_filter_block_plane_ss11(struct VP9Common *const cm,
struct macroblockd_plane *const plane,
int mi_row, LOOP_FILTER_MASK *lfm);
void vp9_filter_block_plane_non420(struct VP9Common *cm,
struct macroblockd_plane *plane,
MODE_INFO **mi_8x8, int mi_row, int mi_col);
void vp9_loop_filter_init(struct VP9Common *cm);
// Update the loop filter for the current frame.
// This should be called before vp9_loop_filter_frame(), vp9_build_mask_frame()
// calls this function directly.
void vp9_loop_filter_frame_init(struct VP9Common *cm, int default_filt_lvl);
void vp9_loop_filter_frame(YV12_BUFFER_CONFIG *frame, struct VP9Common *cm,
struct macroblockd *xd, int frame_filter_level,
int y_only, int partial_frame);
// Get the superblock lfm for a given mi_row, mi_col.
static INLINE LOOP_FILTER_MASK *get_lfm(const struct loopfilter *lf,
const int mi_row, const int mi_col) {
return &lf->lfm[(mi_col >> 3) + ((mi_row >> 3) * lf->lfm_stride)];
}
void vp9_build_mask(struct VP9Common *cm, const MODE_INFO *mi, int mi_row,
int mi_col, int bw, int bh);
void vp9_adjust_mask(struct VP9Common *const cm, const int mi_row,
const int mi_col, LOOP_FILTER_MASK *lfm);
void vp9_build_mask_frame(struct VP9Common *cm, int frame_filter_level,
int partial_frame);
void vp9_reset_lfm(struct VP9Common *const cm);
typedef struct LoopFilterWorkerData {
YV12_BUFFER_CONFIG *frame_buffer;
struct VP9Common *cm;
struct macroblockd_plane planes[MAX_MB_PLANE];
int start;
int stop;
int y_only;
} LFWorkerData;
void vp9_loop_filter_data_reset(
LFWorkerData *lf_data, YV12_BUFFER_CONFIG *frame_buffer,
struct VP9Common *cm, const struct macroblockd_plane planes[MAX_MB_PLANE]);
// Operates on the rows described by 'arg1' (cast to LFWorkerData *).
int vp9_loop_filter_worker(void *arg1, void *unused);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_VP9_COMMON_VP9_LOOPFILTER_H_
|
