vcd.h

ESS3890+SL原代码（1*16内存）

/* Copyright 1996, ESS Technology, Inc.					*/
/* SCCSID @(#)vcd.h	4.8 11/05/04 */ 

/*
 * $Log$
 */

#ifndef __VCD_H__
#define __VCD_H__

#include "common.h"

#define INFO_VCD_SIZE		400	/* Bytes */
#define ENTRIES_VCD_SIZE	800
#define PSD_SIZE		1024
#define TRACK_SIZE		400
#define TRACK_MUXRATE_SIZE	200 /* ABNORMAL_VCD || ANTI_SHOCK */


/* use DWord offsets..removed redundant variables and "MAC_.." */
#define INFO_VCD_OFFSET		(INFO_VCD_start)   
#define ENTRIES_VCD_OFFSET	(INFO_VCD_OFFSET + INFO_VCD_SIZE/4)
#define PSD_START_OFFSET	(ENTRIES_VCD_OFFSET + ENTRIES_VCD_SIZE/4)
#define TRACK_INFO_OFFSET	(PSD_START_OFFSET + PSD_SIZE/4)
#define ENTRY_START_OFFSET	(ENTRIES_VCD_OFFSET + 12/4)
#define TRACK_MUXRATE_OFFSET	(TRACK_INFO_OFFSET + TRACK_SIZE/4)


#define PSD_SECTOR_SIZE		2048	/* bytes */
#define MAX_ENTRY_NUM		195
#define MAX_SEGMENT_NUM		1980	/* from 1 to 1980 */

#define DATA_TRACK		1
#define AUDIO_TRACK		0

#ifdef SCENE
#define SCENE_LIMIT		9999	/* input limit (spec is 32767) */
#define SCENE_INVALID		0xffff	/* invalid or unused */
#endif /*SCENE*/


/* VCD file download functions */
int dump_info_vcd(uchar *);	/* info.vcd to dram */
int dump_entries_vcd(uchar *);	/* entries.vcd to dram */

/* get track, entry, segment and PSD info functions */
int get_segment_info(int seg_num, unsigned char *content, int *len);
int get_entry_info(int entry_num, unsigned char *track_num,
		   unsigned int *start_mmssff,
		   int *end_mmssff);
int get_track_info(unsigned char track_num, unsigned int *start_mmssff,
		   unsigned int *end_mmssff, unsigned char *type);
char * get_PSD(int offset, int size);
int get_entry_number(int CDtime);
int get_track_entries(unsigned char track_number, unsigned int *beg,
		      unsigned int *end);
#ifdef SCENE
unsigned short get_list_offset(unsigned int);
#endif /*SCENE*/

int is_track_pre_emphasis(int track);


/* init function */
void reset_PSD();

/* extern variables */
extern unsigned int *TrackInfoAdr;
extern int PSD_size;			/* The size of PSD in bytes. */
extern unsigned char track_map[];	/* track map for motion picture */

#endif /* __VCD_H__ */