Initial commit of files

include/bytequeue.h

@@ -0,0 +1,112 @@
+/*****************************************************************************
+ * Copyright (C) 2008
+ * ProbeStar Telematics, LLC
+ * All Rights Reserved.  Proprietary and Confidential.
+ *============================================================================
+ * BYTE Queue
+*****************************************************************************/
+
+/* prevent multiple inclusions */
+#ifndef __EMBEDDED_BYTEQUEUE__
+#define __EMBEDDED_BYTEQUEUE__
+
+/*****************************************************************************
+ * includes
+*****************************************************************************/
+
+#include "embtypes.h"
+
+/*****************************************************************************
+ * defines
+*****************************************************************************/
+
+/*****************************************************************************
+ * macros
+*****************************************************************************/
+
+#define _QueuePut(Q,D) \
+{ \
+  *((Q).pbyBuf+((Q).byFront++)) = (D); \
+  (Q).byCount++; \
+  if ( (Q).byFront == (Q).bySize ) \
+    (Q).byFront = 0; \
+}
+
+#define _QueueUnput(Q) \
+{ \
+  if ( (Q).byFront == 0 ) \
+    (Q).byFront = (Q).bySize; \
+    *((Q).pbyBuf+(--(Q).byFront)) = (0); \
+    (Q).byCount--; \
+}
+
+#define _QueueGet(Q,D) \
+{ \
+  (D) = *((Q).pbyBuf+((Q).byRear++)); \
+  (Q).byCount--; \
+  if ( (Q).byRear == (Q).bySize ) \
+    (Q).byRear = 0; \
+}
+
+#define _QueueUnget(Q,D) \
+{ \
+  if ( (Q).byRear == 0 ) \
+    (Q).byRear = (Q).bySize; \
+    *((Q).pbyBuf+(--(Q).byRear)) = (D); \
+    (Q).byCount++; \
+}
+
+#define	_QueueAlloc(Q,B,N)	(Q).pbyBuf=(B);(Q).bySize=(N)
+#define _QueueClear(Q)		(Q).byCount=(Q).byFront=(Q).byRear=0
+#define _QueueCount(Q)		(Q).byCount
+#define _QueueSize(Q)		(Q).bySize
+#define _QueueEmpty(Q)		((Q).byCount==0)
+#define _QueueFull(Q)		((Q).byCount>=(Q).bySize)
+
+#define QueueCount(Q)		(Q)->byCount
+#define QueueSize(Q)		(Q)->bySize
+#define QueueEmpty(Q)		((Q)->byCount==0)
+#define QueueFull(Q)		((Q)->byCount>=(Q)->bySize)
+
+/*****************************************************************************
+ * structs & typedefs
+*****************************************************************************/
+
+typedef struct _Queue {
+	BYTE byCount;
+	BYTE byFront;
+	BYTE byRear;
+	BYTE bySize;
+	BYTE *pbyBuf;
+} Queue;
+
+/*****************************************************************************
+ * global constants
+*****************************************************************************/
+
+/*****************************************************************************
+ * global variables
+*****************************************************************************/
+
+/*****************************************************************************
+ * C function prototypes
+*****************************************************************************/
+/* export C functions to C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void QueueAlloc( Queue *pQ, BYTE *pbyData, BYTE bySize );
+void QueueClear( Queue *pQ );
+
+BYTE QueueGet( Queue *pQ, BYTE *pbyData );
+BYTE QueuePut( Queue *pQ, BYTE *pbyData );
+
+BYTE QueueUnget( Queue *pQ, BYTE byData );
+BYTE QueueUnput( Queue *pQ );
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif