blob: 85e3b34b6e81882dd10c08a07ecc7c4a7bec916d (
plain)
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
|
#ifndef IMV_BACKEND_H
#define IMV_BACKEND_H
#include <stddef.h>
struct imv_source;
enum backend_result {
BACKEND_SUCCESS = 0, /* successful load */
BACKEND_BAD_PATH = 1, /* no such file, bad permissions, etc. */
BACKEND_UNSUPPORTED = 2, /* unsupported file format */
};
/* A backend is responsible for taking a path, or a raw data pointer, and
* converting that into an imv_source. Each backend may be powered by a
* different image library and support different image formats.
*/
struct imv_backend {
/* Name of the backend, for debug and user informational purposes */
const char *name;
/* Information about the backend, displayed by help dialog */
const char *description;
/* Official website address */
const char *website;
/* License the backend is used under */
const char *license;
/* Input: path to open
* Output: initialises the imv_source instance passed in
*/
enum backend_result (*open_path)(const char *path, struct imv_source **src);
/* Input: pointer to data and length of data
* Output: initialises the imv_source instance passed in
*/
enum backend_result (*open_memory)(void *data, size_t len, struct imv_source **src);
};
#endif
|
