xport.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.

/* SCCSID @(#)xport.h	1.34 2/25/98 */

/*
 * $Log$
 */

#ifndef __XPORT_H__
#define __XPORT_H__

#include "common.h"

/****************************************************************************
 The various xport types
 ****************************************************************************/
#define MULTI_XPORT            -1
#define MPEG1_PS               	0
#define AUDIO_ELM_ONLY          1
#define VIDEO_ELM_ONLY          2
#define DSS_SIMPLE           	3
#define DVD_SIMPLE		4
#define PS_SIMPLE		5

/****************************************************************************
 Various defines
 ****************************************************************************/
#define XPORT_RESET     0x00000001
#define XPORT_LDMC      0x00000002
#define XPORT_LDPID     0x00000004
#define XPORT_ENDN      0x00000008
#define XPORT_FLUSHCAM  0x00000010
#define XPORT_NEEDRST   0x00000020

/************************************************************************
 * Entry points (or offsets) of various transport microcode.		*
 *									*
 * Assignments here have to be kept consistent with the transport	*
 * microcode (xport11.xpc, xport20.xpc and mp1cdda.xpc)			*
 ************************************************************************/
/* 
 * Shared entry points for 1.1 transport mircocode (xport11), 2.0
 * transport microcode (xport20), and CD/file transport microcode (mp1cdda)
 */
#define	XPORT_OFFSET_FUZZY_PLAY		0	/* For fuzzyPlay	*/
#define	XPORT_OFFSET_PLAY_CDDA		2	/* For playSector	*/

/* 
 * Shared entry points for xport11 and mp1cdda.
 */
#define	XPORT_OFFSET_ALL_ZERO		3	/* Detection of all 0	*/

/* 
 * Entry points unqiue to xport20
 */
#define	XPORT_OFFSET_PLAY_SECTOR	3	/* For playSector	*/
#define	XPORT_OFFSET_GET_SECTOR		4	/* For getSector	*/
#define	XPORT_OFFSET_LOAD_GETSECTOR_LOW3 5	/* Load the counter 3 low*/
#define	XPORT_OFFSET_STOP		6	/* Stop copying		*/
#define	XPORT_OFFSET_STOP_STATE		7	/* Stop copying (drain)	*/
#define	XPORT_OFFSET_BEG_MM		8	/* For MM of begCDtime	*/
#define	XPORT_OFFSET_BEG_SS		10	/* For SS of begCDtime	*/
#define	XPORT_OFFSET_BEG_FF		13	/* For FF of begCDtime	*/
#define	XPORT_OFFSET_END_MM		15	/* For MM of endCDtime	*/
#define	XPORT_OFFSET_END_SS		17	/* For SS of endCDtime	*/
#define	XPORT_OFFSET_END_FF		20	/* For FF of endCDtime	*/
#define	XPORT_OFFSET_MATCH_CHANNEL	23	/* Matching channel no.	*/

/*
 * Unique entry pints for DVDVCD
 */
#define	XPORT_FLUSH_PIPE		28	/* Start pipe flush	*/
#define	XPORT_FIND_SYNC2_END		36	/* End of 2nd find synd	*/

/************************************************************************
 * Entry points (or offsets) of transport's CAM				*
 *									*
 * Assignments here have to be kept consistent with the transport pid	*
 * table.								*
 ************************************************************************/
#ifdef XPORT11
#define	XPORT_PID_E0			1	/* MPEG video		*/
#define	XPORT_PID_C0			2	/* MPEG audio		*/
#define	XPORT_PID_E1E2			3	/* Low/high still	*/
#else
/* XPORT20 */
#define	XPORT_PID_E0			16	/* MPEG video		*/
#define	XPORT_PID_C0			17	/* MPEG audio		*/
#define	XPORT_PID_E1E2			18	/* Low/high still	*/
#define	XPORT_PID_B7			19	/* Sequence end code	*/
#endif

/************************************************************************
 * Xport CAM's bit definition (refer to ERS)				*
 ************************************************************************/
#define	PID_ID(x)		(0x200000 | (x << 8))
#define	PID_COUNTER(x)		(0x10 | (x << 3))
#define	PID_DEST_VIDEO		(0x0)
#define	PID_DEST_AUDIO		(0x2)
#define	PID_DEST_AUX		(0x4)
#define	PID_DEST_USER		(0x6)
#define	PID_DEST_RISC		(0x1)
#define	PID_DEST_JUNK		(0x3)


GBLDEF_0(volatile unsigned int XPORT_active, 0);	/* Is XPORT active?*/
GBLDEF_0(unsigned int XPORT_start, 0);	/* Set when XPORT is restarted.	*/
GBLDEF_0(int XPORT_fifo_length, 0);	/* Number of items in XPORT FIFO*/
extern	unsigned short XPORT_fifo[];	/* Data in XPORT->RISC FIFO	*/

int	XPORT_init(int xport_type, int xfer_mode);
int	XPORT_interrupt_service(void);
void	XPORT_restart_at(int addr, int swap);
void	XPORT_restore_e0_c0(void);
void	XPORT_play20video(int, int);
void	XPORT_loadstill(int);
void 	XPORT_flushGateway(void);
void	XPORT_load_ucode(int *, int);

#endif /* __XPORT_H__ */