Line data Source code
1 : /*
2 : * Copyright (c) 2010 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_COMMON_VP9_LOOPFILTER_H_
12 : #define VP9_COMMON_VP9_LOOPFILTER_H_
13 :
14 : #include "vpx_ports/mem.h"
15 : #include "./vpx_config.h"
16 :
17 : #include "vp9/common/vp9_blockd.h"
18 : #include "vp9/common/vp9_seg_common.h"
19 :
20 : #ifdef __cplusplus
21 : extern "C" {
22 : #endif
23 :
24 : #define MAX_LOOP_FILTER 63
25 : #define MAX_SHARPNESS 7
26 :
27 : #define SIMD_WIDTH 16
28 :
29 : #define MAX_REF_LF_DELTAS 4
30 : #define MAX_MODE_LF_DELTAS 2
31 :
32 : enum lf_path {
33 : LF_PATH_420,
34 : LF_PATH_444,
35 : LF_PATH_SLOW,
36 : };
37 :
38 : // Need to align this structure so when it is declared and
39 : // passed it can be loaded into vector registers.
40 : typedef struct {
41 : DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, mblim[SIMD_WIDTH]);
42 : DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, lim[SIMD_WIDTH]);
43 : DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, hev_thr[SIMD_WIDTH]);
44 : } loop_filter_thresh;
45 :
46 : typedef struct {
47 : loop_filter_thresh lfthr[MAX_LOOP_FILTER + 1];
48 : uint8_t lvl[MAX_SEGMENTS][MAX_REF_FRAMES][MAX_MODE_LF_DELTAS];
49 : } loop_filter_info_n;
50 :
51 : // This structure holds bit masks for all 8x8 blocks in a 64x64 region.
52 : // Each 1 bit represents a position in which we want to apply the loop filter.
53 : // Left_ entries refer to whether we apply a filter on the border to the
54 : // left of the block. Above_ entries refer to whether or not to apply a
55 : // filter on the above border. Int_ entries refer to whether or not to
56 : // apply borders on the 4x4 edges within the 8x8 block that each bit
57 : // represents.
58 : // Since each transform is accompanied by a potentially different type of
59 : // loop filter there is a different entry in the array for each transform size.
60 : typedef struct {
61 : uint64_t left_y[TX_SIZES];
62 : uint64_t above_y[TX_SIZES];
63 : uint64_t int_4x4_y;
64 : uint16_t left_uv[TX_SIZES];
65 : uint16_t above_uv[TX_SIZES];
66 : uint16_t int_4x4_uv;
67 : uint8_t lfl_y[64];
68 : } LOOP_FILTER_MASK;
69 :
70 : struct loopfilter {
71 : int filter_level;
72 : int last_filt_level;
73 :
74 : int sharpness_level;
75 : int last_sharpness_level;
76 :
77 : uint8_t mode_ref_delta_enabled;
78 : uint8_t mode_ref_delta_update;
79 :
80 : // 0 = Intra, Last, GF, ARF
81 : signed char ref_deltas[MAX_REF_LF_DELTAS];
82 : signed char last_ref_deltas[MAX_REF_LF_DELTAS];
83 :
84 : // 0 = ZERO_MV, MV
85 : signed char mode_deltas[MAX_MODE_LF_DELTAS];
86 : signed char last_mode_deltas[MAX_MODE_LF_DELTAS];
87 :
88 : LOOP_FILTER_MASK *lfm;
89 : int lfm_stride;
90 : };
91 :
92 : /* assorted loopfilter functions which get used elsewhere */
93 : struct VP9Common;
94 : struct macroblockd;
95 : struct VP9LfSyncData;
96 :
97 : // This function sets up the bit masks for the entire 64x64 region represented
98 : // by mi_row, mi_col.
99 : void vp9_setup_mask(struct VP9Common *const cm, const int mi_row,
100 : const int mi_col, MODE_INFO **mi_8x8,
101 : const int mode_info_stride, LOOP_FILTER_MASK *lfm);
102 :
103 : void vp9_filter_block_plane_ss00(struct VP9Common *const cm,
104 : struct macroblockd_plane *const plane,
105 : int mi_row, LOOP_FILTER_MASK *lfm);
106 :
107 : void vp9_filter_block_plane_ss11(struct VP9Common *const cm,
108 : struct macroblockd_plane *const plane,
109 : int mi_row, LOOP_FILTER_MASK *lfm);
110 :
111 : void vp9_filter_block_plane_non420(struct VP9Common *cm,
112 : struct macroblockd_plane *plane,
113 : MODE_INFO **mi_8x8, int mi_row, int mi_col);
114 :
115 : void vp9_loop_filter_init(struct VP9Common *cm);
116 :
117 : // Update the loop filter for the current frame.
118 : // This should be called before vp9_loop_filter_frame(), vp9_build_mask_frame()
119 : // calls this function directly.
120 : void vp9_loop_filter_frame_init(struct VP9Common *cm, int default_filt_lvl);
121 :
122 : void vp9_loop_filter_frame(YV12_BUFFER_CONFIG *frame, struct VP9Common *cm,
123 : struct macroblockd *mbd, int filter_level,
124 : int y_only, int partial_frame);
125 :
126 : // Get the superblock lfm for a given mi_row, mi_col.
127 0 : static INLINE LOOP_FILTER_MASK *get_lfm(const struct loopfilter *lf,
128 : const int mi_row, const int mi_col) {
129 0 : return &lf->lfm[(mi_col >> 3) + ((mi_row >> 3) * lf->lfm_stride)];
130 : }
131 :
132 : void vp9_build_mask(struct VP9Common *cm, const MODE_INFO *mi, int mi_row,
133 : int mi_col, int bw, int bh);
134 : void vp9_adjust_mask(struct VP9Common *const cm, const int mi_row,
135 : const int mi_col, LOOP_FILTER_MASK *lfm);
136 : void vp9_build_mask_frame(struct VP9Common *cm, int frame_filter_level,
137 : int partial_frame);
138 : void vp9_reset_lfm(struct VP9Common *const cm);
139 :
140 : typedef struct LoopFilterWorkerData {
141 : YV12_BUFFER_CONFIG *frame_buffer;
142 : struct VP9Common *cm;
143 : struct macroblockd_plane planes[MAX_MB_PLANE];
144 :
145 : int start;
146 : int stop;
147 : int y_only;
148 : } LFWorkerData;
149 :
150 : void vp9_loop_filter_data_reset(
151 : LFWorkerData *lf_data, YV12_BUFFER_CONFIG *frame_buffer,
152 : struct VP9Common *cm, const struct macroblockd_plane planes[MAX_MB_PLANE]);
153 :
154 : // Operates on the rows described by 'lf_data'.
155 : int vp9_loop_filter_worker(LFWorkerData *const lf_data, void *unused);
156 : #ifdef __cplusplus
157 : } // extern "C"
158 : #endif
159 :
160 : #endif // VP9_COMMON_VP9_LOOPFILTER_H_
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