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
|
/*
* 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 VP9_COMMON_VP9_IDCT_H_
#define VP9_COMMON_VP9_IDCT_H_
#include <assert.h>
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
#include "vp9/common/vp9_common.h"
#include "vp9/common/vp9_enums.h"
#ifdef __cplusplus
extern "C" {
#endif
// Constants and Macros used by all idct/dct functions
#define DCT_CONST_BITS 14
#define DCT_CONST_ROUNDING (1 << (DCT_CONST_BITS - 1))
#define UNIT_QUANT_SHIFT 2
#define UNIT_QUANT_FACTOR (1 << UNIT_QUANT_SHIFT)
#define pair_set_epi16(a, b) \
_mm_set_epi16(b, a, b, a, b, a, b, a)
#define pair_set_epi32(a, b) \
_mm_set_epi32(b, a, b, a)
// Constants:
// for (int i = 1; i< 32; ++i)
// printf("static const int cospi_%d_64 = %.0f;\n", i,
// round(16384 * cos(i*M_PI/64)));
// Note: sin(k*Pi/64) = cos((32-k)*Pi/64)
static const int cospi_1_64 = 16364;
static const int cospi_2_64 = 16305;
static const int cospi_3_64 = 16207;
static const int cospi_4_64 = 16069;
static const int cospi_5_64 = 15893;
static const int cospi_6_64 = 15679;
static const int cospi_7_64 = 15426;
static const int cospi_8_64 = 15137;
static const int cospi_9_64 = 14811;
static const int cospi_10_64 = 14449;
static const int cospi_11_64 = 14053;
static const int cospi_12_64 = 13623;
static const int cospi_13_64 = 13160;
static const int cospi_14_64 = 12665;
static const int cospi_15_64 = 12140;
static const int cospi_16_64 = 11585;
static const int cospi_17_64 = 11003;
static const int cospi_18_64 = 10394;
static const int cospi_19_64 = 9760;
static const int cospi_20_64 = 9102;
static const int cospi_21_64 = 8423;
static const int cospi_22_64 = 7723;
static const int cospi_23_64 = 7005;
static const int cospi_24_64 = 6270;
static const int cospi_25_64 = 5520;
static const int cospi_26_64 = 4756;
static const int cospi_27_64 = 3981;
static const int cospi_28_64 = 3196;
static const int cospi_29_64 = 2404;
static const int cospi_30_64 = 1606;
static const int cospi_31_64 = 804;
// 16384 * sqrt(2) * sin(kPi/9) * 2 / 3
static const int sinpi_1_9 = 5283;
static const int sinpi_2_9 = 9929;
static const int sinpi_3_9 = 13377;
static const int sinpi_4_9 = 15212;
static INLINE int dct_const_round_shift(int input) {
int rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS);
return (int16_t)rv;
}
typedef void (*transform_1d)(const int16_t*, int16_t*);
typedef struct {
transform_1d cols, rows; // vertical and horizontal
} transform_2d;
void vp9_iwht4x4_add(const int16_t *input, uint8_t *dest, int stride, int eob);
void vp9_idct4x4_add(const int16_t *input, uint8_t *dest, int stride, int eob);
void vp9_idct8x8_add(const int16_t *input, uint8_t *dest, int stride, int eob);
void vp9_idct16x16_add(const int16_t *input, uint8_t *dest, int stride, int
eob);
void vp9_idct32x32_add(const int16_t *input, uint8_t *dest, int stride,
int eob);
void vp9_iht4x4_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest,
int stride, int eob);
void vp9_iht8x8_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest,
int stride, int eob);
void vp9_iht16x16_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest,
int stride, int eob);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP9_COMMON_VP9_IDCT_H_
|
