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#ifndef IMV_BACKEND_H
#define IMV_BACKEND_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 a source that imv can handle. 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;
/* Input: path to open
* Output: initialises the imv_source instance passed in
*/
enum backend_result (*open_path)(const char *path, struct imv_source **src);
/* Clean up this backend */
void (*free)(struct imv_backend *backend);
};
#endif
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