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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/********************************************************
* The ChibiOS BaseFileStream file-system
********************************************************/
#include "gfx.h"
#if GFX_USE_GFILE && GFILE_NEED_CHIBIOSFS && GFX_USE_OS_CHIBIOS
#include "gfile_fs.h"
static void ChibiOSBFSClose(GFILE *f);
static int ChibiOSBFSRead(GFILE *f, void *buf, int size);
static int ChibiOSBFSWrite(GFILE *f, const void *buf, int size);
static bool_t ChibiOSBFSSetpos(GFILE *f, long int pos);
static long int ChibiOSBFSGetsize(GFILE *f);
static bool_t ChibiOSBFSEof(GFILE *f);
static const GFILEVMT FsCHIBIOSVMT = {
GFSFLG_SEEKABLE|GFSFLG_WRITEABLE, // flags
0, // prefix
0, 0, 0, 0,
0, ChibiOSBFSClose, ChibiOSBFSRead, ChibiOSBFSWrite,
ChibiOSBFSSetpos, ChibiOSBFSGetsize, ChibiOSBFSEof,
0, 0, 0,
#if GFILE_NEED_FILELISTS
0, 0, 0,
#endif
};
static void ChibiOSBFSClose(GFILE *f) {
chFileStreamClose(((BaseFileStream *)f->obj));
}
static int ChibiOSBFSRead(GFILE *f, void *buf, int size) {
return chSequentialStreamRead(((BaseFileStream *)f->obj), (uint8_t *)buf, size);
}
static int ChibiOSBFSWrite(GFILE *f, const void *buf, int size) {
return chSequentialStreamWrite(((BaseFileStream *)f->obj), (uint8_t *)buf, size);
}
static bool_t ChibiOSBFSSetpos(GFILE *f, long int pos) {
chFileStreamSeek(((BaseFileStream *)f->obj), pos);
return TRUE;
}
static long int ChibiOSBFSGetsize(GFILE *f) { return chFileStreamGetSize(((BaseFileStream *)f->obj)); }
static bool_t ChibiOSBFSEof(GFILE *f) { return f->pos >= chFileStreamGetSize(((BaseFileStream *)f->obj)); }
GFILE * gfileOpenBaseFileStream(void *BaseFileStreamPtr, const char *mode) {
GFILE * f;
// Get an empty file and set the flags
if (!(f = _gfileFindSlot(mode)))
return 0;
// File is open - fill in all the details
f->vmt = &FsCHIBIOSVMT;
f->obj = BaseFileStreamPtr;
f->pos = 0;
f->flags |= GFILEFLG_OPEN|GFILEFLG_CANSEEK;
return f;
}
#endif //GFX_USE_GFILE && GFILE_NEED_CHIBIOSFS && GFX_USE_OS_CHIBIOS
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