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
|
/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AV1_COMMON_CONVOLVE_H_
#define AOM_AV1_COMMON_CONVOLVE_H_
#include "av1/common/filter.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef uint16_t CONV_BUF_TYPE;
typedef struct ConvolveParams {
int do_average;
CONV_BUF_TYPE *dst;
int dst_stride;
int round_0;
int round_1;
int plane;
int is_compound;
int use_dist_wtd_comp_avg;
int fwd_offset;
int bck_offset;
} ConvolveParams;
typedef struct WienerConvolveParams {
int round_0;
int round_1;
} WienerConvolveParams;
#define ROUND0_BITS 3
#define COMPOUND_ROUND1_BITS 7
#define WIENER_ROUND0_BITS 3
#define WIENER_CLAMP_LIMIT(r0, bd) (1 << ((bd) + 1 + FILTER_BITS - r0))
typedef void (*aom_convolve_fn_t)(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride, int w, int h,
const InterpFilterParams *filter_params_x,
const InterpFilterParams *filter_params_y,
const int subpel_x_qn, const int subpel_y_qn,
ConvolveParams *conv_params);
typedef void (*aom_highbd_convolve_fn_t)(
const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w,
int h, const InterpFilterParams *filter_params_x,
const InterpFilterParams *filter_params_y, const int subpel_x_qn,
const int subpel_y_qn, ConvolveParams *conv_params, int bd);
struct AV1Common;
struct scale_factors;
void av1_convolve_2d_facade(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
const InterpFilterParams *interp_filters[2],
const int subpel_x_qn, int x_step_q4,
const int subpel_y_qn, int y_step_q4, int scaled,
ConvolveParams *conv_params);
static inline ConvolveParams get_conv_params_no_round(int cmp_index, int plane,
CONV_BUF_TYPE *dst,
int dst_stride,
int is_compound, int bd) {
ConvolveParams conv_params;
assert(IMPLIES(cmp_index, is_compound));
conv_params.is_compound = is_compound;
conv_params.use_dist_wtd_comp_avg = 0;
conv_params.round_0 = ROUND0_BITS;
conv_params.round_1 = is_compound ? COMPOUND_ROUND1_BITS
: 2 * FILTER_BITS - conv_params.round_0;
#if CONFIG_AV1_HIGHBITDEPTH
const int intbufrange = bd + FILTER_BITS - conv_params.round_0 + 2;
assert(IMPLIES(bd < 12, intbufrange <= 16));
if (intbufrange > 16) {
conv_params.round_0 += intbufrange - 16;
if (!is_compound) conv_params.round_1 -= intbufrange - 16;
}
#else
(void)bd;
#endif // CONFIG_AV1_HIGHBITDEPTH
// TODO(yunqing): The following dst should only be valid while
// is_compound = 1;
conv_params.dst = dst;
conv_params.dst_stride = dst_stride;
conv_params.plane = plane;
// By default, set do average to 1 if this is the second single prediction
// in a compound mode.
conv_params.do_average = cmp_index;
return conv_params;
}
static inline ConvolveParams get_conv_params(int do_average, int plane,
int bd) {
return get_conv_params_no_round(do_average, plane, NULL, 0, 0, bd);
}
static inline WienerConvolveParams get_conv_params_wiener(int bd) {
WienerConvolveParams conv_params;
conv_params.round_0 = WIENER_ROUND0_BITS;
conv_params.round_1 = 2 * FILTER_BITS - conv_params.round_0;
const int intbufrange = bd + FILTER_BITS - conv_params.round_0 + 2;
assert(IMPLIES(bd < 12, intbufrange <= 16));
if (intbufrange > 16) {
conv_params.round_0 += intbufrange - 16;
conv_params.round_1 -= intbufrange - 16;
}
return conv_params;
}
void av1_highbd_convolve_2d_facade(const uint8_t *src8, int src_stride,
uint8_t *dst, int dst_stride, int w, int h,
const InterpFilterParams *interp_filters[2],
const int subpel_x_qn, int x_step_q4,
const int subpel_y_qn, int y_step_q4,
int scaled, ConvolveParams *conv_params,
int bd);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_COMMON_CONVOLVE_H_
|
