libsdutils/include/sdutils/sdutils.h
2022-04-28 19:51:38 +02:00

119 lines
4.3 KiB
C

#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
enum SDUtilsStatus {
SDUTILS_RESULT_SUCCESS = 0,
SDUTILS_RESULT_MODULE_NOT_FOUND = -1,
SDUTILS_RESULT_MODULE_MISSING_EXPORT = -2,
SDUTILS_RESULT_MAX_CALLBACKS = -3,
SDUTILS_RESULT_NOT_FOUND = -4,
SDUTILS_RESULT_INVALID_ARGUMENT = -5,
SDUTILS_RESULT_FAILED = -10,
SDUTILS_RESULT_LIB_UNINITIALIZED = -20,
SDUTILS_RESULT_UNSUPPORTED_VERSION = -99,
};
typedef uint32_t SDUtilsVersion;
#define SDUTILS_MODULE_VERSION 0x00000001
enum SDUtilsAttachStatus {
SDUTILS_ATTACH_MOUNTED = 1,
SDUTILS_ATTACH_UNMOUNTED = 0,
};
typedef void (*SDAttachHandlerFn)(SDUtilsAttachStatus status);
typedef void (*SDCleanUpHandlesHandlerFn)();
/**
* Initializes the SDUtils library. This must be call before any other function can be called
* @return SDUTILS_RESULT_SUCCESS on success, the functions of this lib can be used
* SDUTILS_RESULT_MODULE_NOT_FOUND when the SDHotSwapModule is not loaded
* SDUTILS_RESULT_MODULE_MISSING_EXPORT when the SDHotSwapModule does not export the expected functions.
*/
SDUtilsStatus SDUtils_Init();
/**
* Returns the API Version of the WUHBUtils Module.
* @return The WUHBUtilsVersion of the Module
*/
SDUtilsVersion SDUtils_GetVersion();
/**
* Deinitializes the SDUtils library, must be called before exiting the application
* @return SDUTILS_RESULT_SUCCESS on success
*/
SDUtilsStatus SDUtils_DeInit();
/**
* Registers a callback which will be called whenever a sd card will be inserted or ejected.
* This is only true for future events, if the sd card is already inserted before registering
* a callback, the callback is only called on the next ejecting but not for the initial
* insertion that happened in the past.
*
* Any previously registered callbacks will be removed when the currently running application
* is closing.
*
* @param fn callback that will be called
* @return SDUTILS_RESULT_SUCCESS on success
* SDUTILS_RESULT_MAX_CALLBACKS when registering the callback has failed because the
* maximum amount of callback has been reached
* SDUTILS_RESULT_LIB_UNINITIALIZED if the lib was not initialized properly
*/
SDUtilsStatus SDUtils_AddAttachHandler(SDAttachHandlerFn fn);
/**
* Removed a previously registered callback
*
* @param fn
* @return SDUTILS_RESULT_SUCCESS on success
* SDUTILS_RESULT_NOT_FOUND when the given callback was not registered.
* SDUTILS_RESULT_LIB_UNINITIALIZED if the lib was not initialized properly
*/
SDUtilsStatus SDUtils_RemoveAttachHandler(SDAttachHandlerFn fn);
/**
* Registers a callback which will be called whenever a sd card will be ejected and before
* the SDUtils_AddAttachHandler. This callback is supposed to be used to clean up any open
* file handles before the sd card gets unmounted.
* This is only true for future events, if the sd card is already ejected before registering
* a callback, the callback is only called on the next ejecting.
*
* Any previously registered callbacks will be removed when the currently running application
* is closing.
*
* @param fn callback that will be called
* @return SDUTILS_RESULT_SUCCESS on success
* SDUTILS_RESULT_MAX_CALLBACKS when registering the callback has failed because the
* maximum amount of callback has been reached
* SDUTILS_RESULT_LIB_UNINITIALIZED if the lib was not initialized properly
*/
SDUtilsStatus SDUtils_AddCleanUpHandlesHandler(SDCleanUpHandlesHandlerFn fn);
/**
* Removed a previously registered callback
*
* @param fn
* @return SDUTILS_RESULT_SUCCESS on success
* SDUTILS_RESULT_NOT_FOUND when the given callback was not registered.
* SDUTILS_RESULT_LIB_UNINITIALIZED if the lib was not initialized properly
*/
SDUtilsStatus SDUtils_RemoveCleanUpHandlesHandler(SDCleanUpHandlesHandlerFn fn);
/**
* Checks if a FAT32 formatted SD Card is inserted, mounted and available via `fs:/vol/external01`
*
* @param outStatus stores the result of the function
* @return SDUTILS_RESULT_SUCCESS on success
* SDUTILS_RESULT_INVALID_ARGUMENT when an invalid ptr has been given
*/
SDUtilsStatus SDUtils_IsSdCardMounted(bool *outStatus);
#ifdef __cplusplus
} // extern "C"
#endif