forked from mnhrdt/iio
-
Notifications
You must be signed in to change notification settings - Fork 0
/
iio.h
218 lines (170 loc) · 8.43 KB
/
iio.h
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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
#ifndef IIO_H
#define IIO_H
#include <stdint.h> // for uint8_t
#include <stdbool.h> // for bool
//
//
//
// IIO: "Image Input-Output"
//
// A set of C functions for reading and writing small images
//
// Philosophy: an image is an array of numbers (not colors, not intensities,
// not luminances). These functions read and write numbers from and to files.
//
//
//
///////////////////////////////
// HIGH-LEVEL API FUNCTIONS //
// (using only C constructs) //
///////////////////////////////
//
// basic float API for 2D images (returns a freeable pointer)
//
float *iio_read_image_float(const char *fname, int *w, int *h);
// x[i+j*w]
float *iio_read_image_float_vec(const char *fname, int *w, int *h, int *pd);
// x[(i + j*w)*pd + l]
float *iio_read_image_float_rgb(const char *fname, int *w, int *h);
// x[(i + j*w)*3 + l]
float *iio_read_image_float_split(const char *fname, int *w, int *h, int *pd);
// x[w*h*l + i + j*w]
//
// convenience float API for 2D images (also returns a freeable pointer)
//
float **iio_read_image_float_matrix(const char *fname, int *w, int *h);
// x[j][i]
float (**iio_read_image_float_matrix_2vec(const char *fnam, int *w, int *h))[2];
float (**iio_read_image_float_matrix_3vec(const char *fnam, int *w, int *h))[3];
float (**iio_read_image_float_matrix_4vec(const char *fnam, int *w, int *h))[4];
float (**iio_read_image_float_matrix_rgb(const char *fnam, int *w, int *h))[3];
float (**iio_read_image_float_matrix_rgba(const char *fnam, int *w, int *h))[4];
// x[j][i][channel]
// (The "rgb" and "rgba" functions may re-order the channels according to file
// metadata. The "vec" functions should produce the data in the same order as
// is stored, whatever that means.)
void *iio_read_image_float_matrix_vec(const char *fnam, int *w, int *h, int *pd);
//
// So far, we have seen the functions for reading multi-channel "2D" images,
// whose samples are of type "FLOAT", from a "NAMED FILE". The rest of the
// API consists in variations of these functions, changing the quoted options
// of the previous sentence in all possible ways. For instance, there are
// the following variations of the function "iio_read_image_float":
//
// // read 3D image into floats, from a named file
// float *iio_read_3d_image_float(char *fname, int *w, int *h, int *d);
//
// // read 2D image into bytes, from a named file
// uint8_t *iio_read_image_uint8(char *fname, int *w, int *h);
//
// // read 2D image into floats, from an open stream
// float *iio_read_image_float_f(FILE *f, int *w, int *h);
//
// // read 2D image into floats, from memory
// float *iio_read_image_float_m(void *f, size_t s, int *w, int *h);
//
// // general forms of these functions
// TYPE *iio_read{,_3d,_4d,_nd}_image_TYPE{,_f,_m}(...);
// TYPE **iio_read{,_3d,_4d,_nd}_image_TYPE_matrix{,_f,_m}(...);
// TYPE (**iio_read{,_3d,_4d,_nd}_image_TYPE_matrix_2vec{,_f,_m}(...))[2];
// TYPE (**iio_read{,_3d,_4d,_nd}_image_TYPE_matrix_3vec{,_f,_m}(...))[3];
// TYPE (**iio_read{,_3d,_4d,_nd}_image_TYPE_matrix_4vec{,_f,_m}(...))[4];
// TYPE (**iio_read{,_3d,_4d,_nd}_image_TYPE_matrix_rgb{,_f,_m}(...))[3];
// TYPE (**iio_read{,_3d,_4d,_nd}_image_TYPE_matrix_rgba{,_f,_m}(...))[4];
//
//
double *iio_read_image_double(const char *fname, int *w, int *h);
double *iio_read_image_double_vec(const char *fname, int *w, int *h, int *pd);
double *iio_read_image_double_split(const char *fname, int *w, int *h, int *pd);
int *iio_read_image_int(const char *fname, int *w, int *h);
int *iio_read_image_int_vec(const char *fname, int *w, int *h, int *pd);
int *iio_read_image_int_split(const char *fname, int *w, int *h, int *pd);
// All these functions are boring variations, and they are defined at the
// end of this file. More interesting are the two following general
// functions:
void *iio_read_image_numbers_as_they_are_stored(char *fname, int *w, int *h,
int *samples_per_pixel, int *sample_size,
bool *ieeefp_samples, bool *signed_samples);
void *iio_read_image_numbers_in_requested_format(char *fname, int *w, int *h,
int *samples_per_pixel, int requested_sample_size,
bool requested_ieeefp, bool requested_sign);
// These two general functions have the usual versions for nD images and
// streams. There exist also the following truly general functions, that
// read images of any dimension:
void *iio_read_nd_image_as_stored(char *fname,
int *dimension, int *sizes,
int *samples_per_pixel, int *sample_size,
bool *ieeefp_samples, bool *signed_samples);
void *iio_read_nd_image_as_desired(char *fname,
int *dimension, int *sizes,
int *samples_per_pixel, int desired_sample_size,
bool desired_ieeefp_samples, bool desired_signed_samples);
#ifdef UINT8_MAX
// basic byte API (returns a freeable pointer)
//
uint8_t *iio_read_image_uint8(const char *fname, int *w, int *h);
// x[i+j*w]
uint8_t *iio_read_image_uint8_vec(const char *fname, int *w, int *h, int *nc);
// x[(i + j*w)*nc + l]
uint8_t (*iio_read_image_uint8_rgb(const char *fnam, int *w, int *h))[3];
// x[(i + j*w)*3 + l]
//
// convenience float API (also returns a freeable pointer)
//
uint8_t **iio_read_image_uint8_matrix(const char *fname, int *w, int *h);
// x[j][i]
uint8_t (**iio_read_image_uint8_matrix_2vec(const char *fnam, int *w, int *h))[2];
uint8_t (**iio_read_image_uint8_matrix_3vec(const char *fnam, int *w, int *h))[3];
uint8_t (**iio_read_image_uint8_matrix_4vec(const char *fnam, int *w, int *h))[4];
uint8_t (**iio_read_image_uint8_matrix_rgb(const char *fnam, int *w, int *h))[3];
uint8_t (**iio_read_image_uint8_matrix_rgba(const char *fnam, int *w, int *h))[4];
// x[j][i][channel]
// (The "rgb" and "rgba" functions may re-order the channels according to file
// metadata. The "vec" functions produce the data in the same order as is
// stored.)
uint8_t ***iio_read_image_uint8_matrix_vec(const char *fnam, int *w, int *h, int *pd);
#endif//UINT8_MAX
#ifdef UINT16_MAX
uint16_t *iio_read_image_uint16_vec(const char *fname, int *w, int *h, int *pd);
#endif//UINT16_MAX
// functions for writing images, with the same conventions as for reding
void iio_write_image_float_vec (char*, float* , int, int, int);
void iio_write_image_float_split (char*, float* , int, int, int);
void iio_write_image_double_vec (char*, double* , int, int, int);
void iio_write_image_double_split (char*, double* , int, int, int);
void iio_write_image_float (char*, float* , int, int );
void iio_write_image_double (char*, double* , int, int );
void iio_write_image_int (char*, int* , int, int );
void iio_write_image_int_vec (char*, int* , int, int, int);
void iio_write_image_int_split (char*, int* , int, int, int);
void iio_write_image_uint8_vec (char*, uint8_t* , int, int, int);
void iio_write_image_uint8_split (char*, uint8_t* , int, int, int);
void iio_write_image_uint16_vec (char*, uint16_t* , int, int, int);
void iio_write_image_uint8_matrix_rgb(char*, uint8_t(**)[3], int, int );
void iio_write_image_uint8_matrix (char*, uint8_t** , int, int );
#define IIO_USE_INCONSISTENT_NAMES
#ifdef IIO_USE_INCONSISTENT_NAMES
// functions for writing images, with the same conventions as for reding
// (note: these functions use the wording "save" instead of "write")
void iio_save_image_float_vec(char *filename, float *x, int w, int h, int pd);
void iio_save_image_float_split(char *filename, float *x, int w, int h, int pd);
void iio_save_image_double_vec(char *filename, double *x, int w, int h, int pd);
void iio_save_image_float(char *filename, float *x, int w, int h);
void iio_save_image_double(char *filename, double *x, int w, int h);
void iio_save_image_int(char *filename, int *x, int w, int h);
void iio_save_image_int_vec(char *filename, int *x, int w, int h, int pd);
void iio_save_image_uint8_vec(char *filename, uint8_t *x, int w, int h, int pd);
void iio_save_image_uint16_vec(char *filename, uint16_t *x, int w, int h, int pd);
void iio_save_image_uint8_matrix_rgb(char *f, unsigned char (**x)[3], int w, int h);
void iio_save_image_uint8_matrix(char *f, unsigned char **x, int w, int h);
#endif//IIO_USE_INCONSISTENT_NAMES
// SAVING FORMATS:
// (w, h; 1 uint8) => pgm, png, tiff, pfm
// (w, h; 3 uint8) => ppm, png, tiff, pfm
// (w, h; 1 uint16) => pgm, png, tiff, pfm
// (w, h; 3 uint16) => ppm, png, tiff, pfm
// (w, h; 1 float) => tiff, pfm
// (w, h; 3 float) => tiff, pfm
// convenience wrapper for free (to avoid need to inlcude stdlib.h)
void iio_free(void*);
#endif//IIO_H