1 /*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #ifndef AOM_AV1_COMMON_RECONINTRA_H_
13 #define AOM_AV1_COMMON_RECONINTRA_H_
14
15 #include <stdlib.h>
16
17 #include "aom/aom_integer.h"
18 #include "av1/common/blockd.h"
19 #include "av1/common/onyxc_int.h"
20
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24
25 void av1_init_intra_predictors(void);
26 void av1_predict_intra_block_facade(const AV1_COMMON *cm, MACROBLOCKD *xd,
27 int plane, int blk_col, int blk_row,
28 TX_SIZE tx_size);
29 void av1_predict_intra_block(const AV1_COMMON *cm, const MACROBLOCKD *xd,
30 int bw, int bh, TX_SIZE tx_size,
31 PREDICTION_MODE mode, int angle_delta,
32 int use_palette,
33 FILTER_INTRA_MODE filter_intra_mode,
34 const uint8_t *ref, int ref_stride, uint8_t *dst,
35 int dst_stride, int aoff, int loff, int plane);
36
37 // Mapping of interintra to intra mode for use in the intra component
38 static const PREDICTION_MODE interintra_to_intra_mode[INTERINTRA_MODES] = {
39 DC_PRED, V_PRED, H_PRED, SMOOTH_PRED
40 };
41
42 // Mapping of intra mode to the interintra mode
43 static const INTERINTRA_MODE intra_to_interintra_mode[INTRA_MODES] = {
44 II_DC_PRED, II_V_PRED, II_H_PRED, II_V_PRED, II_SMOOTH_PRED, II_V_PRED,
45 II_H_PRED, II_H_PRED, II_V_PRED, II_SMOOTH_PRED, II_SMOOTH_PRED
46 };
47
48 #define FILTER_INTRA_SCALE_BITS 4
49
av1_is_directional_mode(PREDICTION_MODE mode)50 static INLINE int av1_is_directional_mode(PREDICTION_MODE mode) {
51 return mode >= V_PRED && mode <= D67_PRED;
52 }
53
av1_use_angle_delta(BLOCK_SIZE bsize)54 static INLINE int av1_use_angle_delta(BLOCK_SIZE bsize) {
55 return bsize >= BLOCK_8X8;
56 }
57
av1_allow_intrabc(const AV1_COMMON * const cm)58 static INLINE int av1_allow_intrabc(const AV1_COMMON *const cm) {
59 return frame_is_intra_only(cm) && cm->allow_screen_content_tools &&
60 cm->allow_intrabc;
61 }
62
av1_filter_intra_allowed_bsize(const AV1_COMMON * const cm,BLOCK_SIZE bs)63 static INLINE int av1_filter_intra_allowed_bsize(const AV1_COMMON *const cm,
64 BLOCK_SIZE bs) {
65 if (!cm->seq_params.enable_filter_intra || bs == BLOCK_INVALID) return 0;
66
67 return block_size_wide[bs] <= 32 && block_size_high[bs] <= 32;
68 }
69
av1_filter_intra_allowed(const AV1_COMMON * const cm,const MB_MODE_INFO * mbmi)70 static INLINE int av1_filter_intra_allowed(const AV1_COMMON *const cm,
71 const MB_MODE_INFO *mbmi) {
72 return mbmi->mode == DC_PRED &&
73 mbmi->palette_mode_info.palette_size[0] == 0 &&
74 av1_filter_intra_allowed_bsize(cm, mbmi->sb_type);
75 }
76
77 extern const int8_t av1_filter_intra_taps[FILTER_INTRA_MODES][8][8];
78
79 // Get the shift (up-scaled by 256) in X w.r.t a unit change in Y.
80 // If angle > 0 && angle < 90, dx = -((int)(256 / t));
81 // If angle > 90 && angle < 180, dx = (int)(256 / t);
82 // If angle > 180 && angle < 270, dx = 1;
av1_get_dx(int angle)83 static INLINE int av1_get_dx(int angle) {
84 if (angle > 0 && angle < 90) {
85 return dr_intra_derivative[angle];
86 } else if (angle > 90 && angle < 180) {
87 return dr_intra_derivative[180 - angle];
88 } else {
89 // In this case, we are not really going to use dx. We may return any value.
90 return 1;
91 }
92 }
93
94 // Get the shift (up-scaled by 256) in Y w.r.t a unit change in X.
95 // If angle > 0 && angle < 90, dy = 1;
96 // If angle > 90 && angle < 180, dy = (int)(256 * t);
97 // If angle > 180 && angle < 270, dy = -((int)(256 * t));
av1_get_dy(int angle)98 static INLINE int av1_get_dy(int angle) {
99 if (angle > 90 && angle < 180) {
100 return dr_intra_derivative[angle - 90];
101 } else if (angle > 180 && angle < 270) {
102 return dr_intra_derivative[270 - angle];
103 } else {
104 // In this case, we are not really going to use dy. We may return any value.
105 return 1;
106 }
107 }
108
av1_use_intra_edge_upsample(int bs0,int bs1,int delta,int type)109 static INLINE int av1_use_intra_edge_upsample(int bs0, int bs1, int delta,
110 int type) {
111 const int d = abs(delta);
112 const int blk_wh = bs0 + bs1;
113 if (d == 0 || d >= 40) return 0;
114 return type ? (blk_wh <= 8) : (blk_wh <= 16);
115 }
116 #ifdef __cplusplus
117 } // extern "C"
118 #endif
119 #endif // AOM_AV1_COMMON_RECONINTRA_H_
120