Add support for GFILEs based on BaseFileStreams and Memory Pointers

1 files changed, 46 insertions, 0 deletions

diff --git a/src/gfile/inc_chibiosfs.c b/src/gfile/inc_chibiosfs.c
new file mode 100644
index 00000000..b30a675f
--- /dev/null
+++ b/src/gfile/inc_chibiosfs.c
@@ -0,0 +1,46 @@
+/*
+ * 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
+ */
+
+/**
+ * This file is included by src/gfile/gfile.c
+ */
+
+/********************************************************
+ * The ChibiOS BaseFileStream file-system VMT
+ ********************************************************/
+
+static void ChibiOSBFSClose(GFILE *f);
+static int ChibiOSBFSRead(GFILE *f, char *buf, int size);
+static int ChibiOSBFSWrite(GFILE *f, char *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 = {
+	0,													// next
+	GFSFLG_SEEKABLE|GFSFLG_WRITEABLE,					// flags
+	0,													// prefix
+	0, 0, 0, 0,
+	0, ChibiOSBFSClose, ChibiOSBFSRead, ChibiOSBFSWrite,
+	ChibiOSBFSSetpos, ChibiOSBFSGetsize, ChibiOSBFSEof,
+};
+
+static void ChibiOSBFSClose(GFILE *f) {
+	chFileStreamClose(((BaseFileStream *)f->fd));
+}
+static int ChibiOSBFSRead(GFILE *f, char *buf, int size) {
+	return chSequentialStreamRead(((BaseFileStream *)f->fd), (uint8_t *)buf, size);
+}
+static int ChibiOSBFSWrite(GFILE *f, char *buf, int size) {
+	return chSequentialStreamWrite(((BaseFileStream *)f->fd), (uint8_t *)buf, size);
+}
+static bool_t ChibiOSBFSSetpos(GFILE *f, long int pos) {
+	chFileStreamSeek(((BaseFileStream *)f->fd), pos);
+	return TRUE;
+}
+static long int ChibiOSBFSGetsize(GFILE *f) { return chFileStreamGetSize(((BaseFileStream *)f->fd)); }
+static bool_t ChibiOSBFSEof(GFILE *f) { return f->pos >= chFileStreamGetSize(((BaseFileStream *)f->fd)); }