common.h

一个两碟控制的VCD的代码,两碟之间的转动及连续播放,已大量生产的CODE.

/* Copyright 1996, ESS Technology, Inc.					*/
/* SCCSID @(#)common.h	1.33 6/9/98 */

/*
 * $Log$
 */


/************************************************************
 * common.h contains general definitions and global variables
 * declaration, always include as 1st header in all files
 ************************************************************/
#ifndef _COMMON_H_ 
#define _COMMON_H_

/*
 * **************** General Definitions ****************
 */
#ifdef MAIN
#define GBLDEF(name,value)      name = value
#define GBLDEF_0(name,value)    name
#define GBLDEF0(name)		name
#else
#define GBLDEF(name,value)      extern name
#define GBLDEF_0(name,value)    extern name
#define GBLDEF0(name)     	extern name
#endif

#ifdef MAIN_AC3
#define GBLAC3(name)      	name
#define GBLAC3DEF(name,value)   name = value
#else
#define GBLAC3(name)      	extern name
#define GBLAC3DEF(name,value)   extern name
#endif

#define cat2(i,j)       i##j
#define cat3(i,j,k)     i##j##k

#define max2(a,b)	((a)>(b)?(a):(b))
#define max3(a,b,c)	max2(max2(a,b),c)

#ifdef CLKDIV
#define	IDLECLK		(CPUCLK/8.0)	/* Internal 3210's clock divider*/
#else
#define	IDLECLK		_IDLECLK_	/* Clock from 3207/9		*/
#endif

#ifndef FAKE
#define PROTECT(a)      do {mvd[riface_irqsuppress] = 0;\
			asm("nop"); asm("nop"); a;} while (0)

GBLDEF(int x12000000, 0x12000000);
GBLDEF(int x02000000, 0x02000000);
#define dram(a)         (x12000000 + ((a)<<2))
#define dram_cached(a)  (x02000000 + ((a)<<2))

register int reg0 asm("r0");
register volatile int *mvd asm("r27");
#else
#define PROTECT(a)      (a)
#define dram(a)         (a)
#define dram_cached(a)  (a)
#endif

#ifdef BILINGUAL_OSD
#define assign_osd_msg(ptr, msg, c_ptr, c_msg)  { ptr = msg; c_ptr = c_msg; }
#else
#define assign_osd_msg(ptr, msg, c_ptr, c_msg)  { ptr = msg; }
#endif

#if (defined(FOUR_LINE_OSD) && !defined(BF43))
#define ADJUST_4_LINE		244	/* DRAM adjustment for stack	*/
#else
#define	ADJUST_4_LINE		0	/* No DRAM adjustment for stack	*/
#endif

GBLDEF_0(int mvd_version, 0);	/* Current chip version (3208 vs 3210)	*/
GBLDEF_0(int rev3210, 0);	/* 0: rev V and earlier			*
				 * 1: rev T (not for production) and 	*
				 *    rev S (3880)			*/
GBLDEF_0(int DSC_version, 0);	/* 0: pre-3207VA; 1: 3881/3883 etc.	*/
GBLDEF_0(unsigned short * VP_ucode_offset, 0);
				/* VP ucode offsets (differnt on versions) */

/************************************************************
 * addressing conversion goodies.
 * a2x, a2y pair convert linear address to components used in dmax and dmay.
 * xy2a convert a 2d coordinate(x,y) with width to a linear address.
 * placed here because both riscbus.h and vp.h shares it.
 ************************************************************/
#define	a2x(a)	((a) & 0x1ff)
#define	a2y(a)	((a) >> 9)
#define xy2a(x,y,width) ((y)*(width)+(x))

/************************************************************
 * for portability reason
 ************************************************************/
#define uchar	unsigned char
#define ushort	unsigned short
#define uint	unsigned

/************************************************************
 * classifier for public functions
 ************************************************************/
#define EXPORT          extern
#define IMPORT          extern
#define PUBLIC
#define PRIVATE		static

/* Global typedefs */
typedef void 		(*PFV)();	/* Pointer to func. returning void */ 
typedef int 		(*PFI)();	/* Pointer to func. returning int  */ 

#endif /* _COMMON_H_ */