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
|
/* Copyright (C) 2010-2016 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (scaler.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __LIBRETRO_SDK_SCALER_H__
#define __LIBRETRO_SDK_SCALER_H__
#include <retro_common_api.h>
#include <stdint.h>
#include <stddef.h>
#include <boolean.h>
#include <clamping.h>
RETRO_BEGIN_DECLS
#define FILTER_UNITY (1 << 14)
enum scaler_pix_fmt
{
SCALER_FMT_ARGB8888 = 0,
SCALER_FMT_ABGR8888,
SCALER_FMT_0RGB1555,
SCALER_FMT_RGB565,
SCALER_FMT_BGR24,
SCALER_FMT_YUYV,
SCALER_FMT_RGBA4444
};
enum scaler_type
{
SCALER_TYPE_UNKNOWN = 0,
SCALER_TYPE_POINT,
SCALER_TYPE_BILINEAR,
SCALER_TYPE_SINC
};
struct scaler_filter
{
int16_t *filter;
int filter_len;
int filter_stride;
int *filter_pos;
};
struct scaler_ctx
{
int in_width;
int in_height;
int in_stride;
int out_width;
int out_height;
int out_stride;
enum scaler_pix_fmt in_fmt;
enum scaler_pix_fmt out_fmt;
enum scaler_type scaler_type;
void (*scaler_horiz)(const struct scaler_ctx*,
const void*, int);
void (*scaler_vert)(const struct scaler_ctx*,
void*, int);
void (*scaler_special)(const struct scaler_ctx*,
void*, const void*, int, int, int, int, int, int);
void (*in_pixconv)(void*, const void*, int, int, int, int);
void (*out_pixconv)(void*, const void*, int, int, int, int);
void (*direct_pixconv)(void*, const void*, int, int, int, int);
bool unscaled;
struct scaler_filter horiz, vert;
struct
{
uint32_t *frame;
int stride;
} input;
struct
{
uint64_t *frame;
int width;
int height;
int stride;
} scaled;
struct
{
uint32_t *frame;
int stride;
} output;
};
bool scaler_ctx_gen_filter(struct scaler_ctx *ctx);
void scaler_ctx_gen_reset(struct scaler_ctx *ctx);
/**
* scaler_ctx_scale:
* @ctx : pointer to scaler context object.
* @output : pointer to output image.
* @input : pointer to input image.
*
* Scales an input image to an output image.
**/
void scaler_ctx_scale(struct scaler_ctx *ctx,
void *output, const void *input);
/**
* scaler_alloc:
* @elem_size : size of the elements to be used.
* @siz : size of the image that the scaler needs to handle.
*
* Allocate and returns a scaler object.
*
* Returns: pointer to a scaler object of type 'void *' on success,
* NULL in case of error. Has to be freed manually.
**/
void *scaler_alloc(size_t elem_size, size_t size);
/**
* scaler_free:
* @ptr : pointer to scaler object.
*
* Frees a scaler object.
**/
void scaler_free(void *ptr);
RETRO_END_DECLS
#endif
|
