robotgo/base/file_io.h
2019-01-02 12:58:50 -04:00

47 lines
1.4 KiB
C

#pragma once
#ifndef FILE_IO_H
#define FILE_IO_H
#include "MMBitmap.h"
#include <stddef.h>
#include <stdint.h>
enum _MMImageType {
kInvalidImageType = 0,
kPNGImageType,
kBMPImageType /* Currently only PNG and BMP are supported. */
};
typedef uint16_t MMImageType;
enum _MMIOError {
kMMIOUnsupportedTypeError = 0
};
typedef uint16_t MMIOError;
const char *getExtension(const char *fname, size_t len);
/* Returns best guess at the MMImageType based on a file extension, or
* |kInvalidImageType| if no matching type was found. */
MMImageType imageTypeFromExtension(const char *ext);
/* Attempts to parse the file of the given type at the given path.
* |filepath| is an ASCII string describing the absolute POSIX path.
* Returns new bitmap (to be destroy()'d by caller) on success, NULL on error.
* If |error| is non-NULL, it will be set to the error code on return.
*/
MMBitmapRef newMMBitmapFromFile(const char *path, MMImageType type, MMIOError *err);
/* Saves |bitmap| to a file of the given type at the given path.
* |filepath| is an ASCII string describing the absolute POSIX path.
* Returns 0 on success, -1 on error. */
int saveMMBitmapToFile(MMBitmapRef bitmap, const char *path, MMImageType type);
/* Returns description of given error code.
* Returned string is constant and hence should not be freed. */
const char *MMIOErrorString(MMImageType type, MMIOError error);
#endif /* IO_H */