cdctl.c

ESS3890+SL原代码（1*16内存）

/* Copyright 1998, ESS Technology, Inc.					*/
/* SCCSID @(#)cdctl.c	4.20 01/17/05 */
/* based on SVCD CD7II cdctl.c	1.55 6/7/99 */

/*
 * $Log$
 */

/*
 * This is a generic servo driver. It can drive Philips loader or
 * direct Sony servo.
 */ 

#include "vcxi.h"
#include "const.h"
#include "debug.h"
#include "display.h"
#include "dsa.h"
#include "echo.h"
#include "memmap.h"
#include "panel.h"
#include "tdm.h"
#include "timedef.h"
#include "vp.h"
#include "xport.h"
#include "low.h"
#include "util.h"
#include "play.h"

#ifdef TWO_FIELDS_OSD
#include "cg.h"
#else
#include "fsosd.h"
#endif

#ifdef FRACTINT
#include "fractint.h"
#endif

#ifdef SERVO 
#include "servo.h"
#endif SERVO

#ifdef MP3
#include "mp3.h"
#endif


#if 0
#define DPRINTF(a) printf a
#else
#define DPRINTF(a)
#endif

/************************************************************************
 * Variables local to this module					*
 ************************************************************************/
PRIVATE	int	currDSAmode = 0;/* Current CDROM's DSA mode. We'll only	*
				 * issue dsa_mode command if the new	*
				 * mode is different from the current	*
				 * mode.				*/


unsigned int    CDDA_play_time; /* Play time for current track  */
unsigned int    CDDA_track_start_time;
CDINFO          CDinfo;
int             power_up = 1;   /* Flag is set to 0 after system starts. */int             num_of_track;   /* # of tracks in the CD                */
int             first_seg_ad;   /* BCD sector location for first segment*
                                 * address. Comes from INFO.VCD. It is  *
                                 * always in MM:SS:FF form. Should be   *
                                 * XXYY00. In most case, XX is 00 and   *
                                 * YY is 05 but there is no guarantee.  *
                                 * (From INFO.VCD)                      */
 
int             CDinited = 0;   /* 0: key info of CD has not been read  *
                                 * 1: CD info has been read/stored      */
 
char            forceDSAabort = 0;/* Force DSA to quit and return as if *
                                 * command succeed.                     */
unsigned int    err_code = 0;   /* Error code from DSA routines         */
unsigned char	servo_track_changed; /* A flag indicates a new track    *
                                      * has come. */
 
unsigned int    servo_info;     /* store TTMMSSFF info from servo.      */
unsigned int    last_servo_info;/* store previous TTMMSSFF info from servo. */
 
int             currentTVmode;  /* TV_NTSC or TV_PAL */
int             bcd_num_of_track; /* used in OSD */
unsigned char   *CDI_ptr;
 

/************************************************************************
 * Debug variables							*
 ************************************************************************/
DEBUGVAR(dbgPlaySector, 0);	/* Can't find the given sector from 20	*
				 * frames ealier.			*/
DEBUGVAR(dbgGetSector, 0);	/* Can't get the sector (because SYNC	*
				 * pattern is not found).		*/
DEBUGVAR(glbSec, 0);		/* Global time in seconds		*/
DEBUGVAR(dbgServiceVcxi, 0);	/* Number of time service_vcxi is called*/
DEBUGVAR(dbgSafeServiceVcxi, 0);/* Number of "save" service_vcxi calls	*/

/************************************************************************
 ************************************************************************/
void CUST_init()
{
    vcx_cd_drive = CD_PHILIPS;
#ifdef EXT_INPUT
    vcx_ext_format = CD_SONY;
#endif
    vcx_xfer_mode = 5; 
}

void dsa_reset()
{
    servo_info = 0;
}

#if 0 /* TESTING */

int abc;
int abc_data[100];
extern int q;

void test_dsa()
{
    switch (abc) {
    case 1: 
	dsa_open();
	break;
    case 2: 
	dsa_close(0);
	break;
    case 3: 
	initMicroObject();
	break;
    case 4: 
	initCD();
	break;
    case 5:
	dsa_ltoc(abc_data, 100);
	break;
    case 6:
	dsa_go(0x120000);
	system_reset();
	system_start();
	begCDtime = 0x120030;
	endCDtime = 0x999999;
	break;
    case 7:
	fuzzyPlaySector(0x120000, 2324);
	break;
    case 8:
	begCDtime = 0x120004;
	endCDtime = 0x999999;
	dsa_go(0x120000);
	system_reset();
	system_start();
 	TDM_isCDDA = 0;
	XPORT_play20video(XPORT_OFFSET_FUZZY_PLAY, 0xe0);
	TDM_turn_on();
	break;
    case 9:
	playSectors(0x120000, 0xe0, 2324);
	begCDtime = 0x120004;
	endCDtime = 0x999999;
	break;
    case 10:
	system_reset();
	system_start();
	playSectors(0x500, 0xe2, 2324);
	begCDtime = 0x500;
	endCDtime = 0x3500;
	break;
    case 11:
	fill_screen(1, 0);
	break;
#ifdef DIGEST
    case 12:
	digestPage(0);
	q = 9;
	break;
#endif
    case 13:
	begCDtime = 0x120004;
	endCDtime = 0x999999;
	dsa_go(0x120000);
	system_reset();
	system_start();
 	TDM_isCDDA = 0;
	XPORT_play20video(XPORT_OFFSET_FUZZY_PLAY, 0xe0);
	TDM_turn_on();
	break;
    case 14:
	system_reset();
	system_start();
	playCDDA(0x010000, 0x100000);
	TDM_turn_on();
	break;
    default:
	break;
    }

    abc = 0;
}

#endif


/*
 * Service microcontroller, CD ROM (etc)
 */
void CUST_background()
{
    /*
     * If the NTSC/PAL switch is changed, then change TV mode
     * accordingly.
     *
     * NOTE: Enable POLL_TV_SWITCH only if your system has 
     * dedicated pin for TV switch. Don't enable POLL_TV_SWITCH
     * if the TV switch is shared(i.e. VFD). In that case,
     * the TV mode can only be detected at power-up.
     */
#ifdef POLL_TV_SWITCH
#ifdef DSC
    if (!IS_POWER_DOWN)
#endif
    {
	PREPARE_DETECTION;
	if (currentTVmode == TV_NTSC) {
	    if (!DETECT_NTSC)  {
		play_change_tv_mode();
	    }
	} else {
	    if (DETECT_NTSC) {
		play_change_tv_mode();    
	    }
	}
    }
#endif /* POLL_TV_SWITCH */ 
 
    if (power_up) {
	/* if in power-down mode, avoid doing power-up stuff */
	if (!IS_POWER_DOWN) {
	    initMicroObject();
	    init_dsa();
#if (defined MP3_LOGO && defined ENABLE_MP3)
#ifndef NOLOGO
	    /*moved here from top.c, for slideshow problems due to longjump*/
	    play_mp3_logo((int *)mp3logo, T_mp3logo_SZ>>2);
#endif
#ifndef MP3_LOGO_IN_SHARE
	    /* show LOGO after play_mp3_logo() */
	    show_mpeg_still(0xe1, powerupScreen, T_powerupScreen_SZ>>2);
#endif /* !MP3_LOGO_IN_SHARE */
#endif /* MP3_LOGO */
 
	    initCD(); /* Customize your init CD routine       */
	}
        power_up = 0; /* Reset after initCD()                 */
    } else {
        DEBUGINC(1, dbgServiceVcxi);
        receive_dsa();
/*
        test_dsa();
*/
        DEBUGINC(1, dbgSafeServiceVcxi);
        DEBUGASSIGN(glbSec, (glbTimer / ((currentTVmode == TV_PAL) ? 50 : 60))); 

#ifdef TWO_FIELDS_OSD
        CG_service(1);
#else
	OSD_schedule_check();
#endif 
        upper_state_machine(1);/* Customize your play state machine     */
    }
}


/************************************************************************
 * Utility routines							*
 ************************************************************************/
/*
 * Read "num" sectors into the start of the system buffer. This routine is
 * only called to get system information (not MPEG A/V data)
 *
 * Inputs:
 *	begin:   CD sector time in MMSSFF (each is in BCD)
 *	num:	 number of CD sectors to copy. This number has to be
 *		 smaller than sys_buf_size/size.
 *	dest:	 
 *		non-zero: data to VBV
 *		       0: data to ABV
 *
 * Return:
 *	-2:	force abort
 *	-1:	failed dsa_go() or servo problem
 *	 0:	if failed
 *	 1:	if successful
 */
int getSectors(begin, num, dest)
unsigned int begin;
int num, dest;
{
    unsigned int dsatime, tmp;
    unsigned int next_time;
    int xfer_done;
    int counter;
    int timeout;
    int ii;


    /* target time check..
     * make sure it's larger than Leadin + "adjustment".
     */
    if (CDtime_check(begin) || (begin < 0x210)) return(0);

    begCDtime	   = begin;
    endCDtime = adjCDtime(begCDtime, logical2physical(num), 1);

    /* Set DSA_GO time to be 10 frames ealier than user specified	*/
    dsatime	   = adjCDtime(begCDtime, 0x10, -1);
    forceDSAabort  = 0;

    /* Only change DSA mode if the current mode is not CDROM		*/
    TDM_isCDDA = 0;	      /* Data is scrambled (as opposed to CDDA)	*/

    XPORT_load_ucode((dest) ? DATA_PS : MP3_PS);
    SERVO_set_speed(SET_CD_DATA_1X);
    counter	   = 0;

    do {
	xfer_done = 0;

	if (counter >= 2) {
	    DEBUGINC(1, dbgGetSector);
	    err_code = ERR_GETSECTOR;
	    return(0);
	}
	counter++;

	if (!dsa_go(dsatime)) {		/* DSA_GO command failed	*/
	    if ((counter >= 2) ||forceDSAabort) {
		DEBUGINC(1, dbgGetSector);
		return(-1);
	    } else {
		counter++;
		continue;		/* Time not specified, don't go	*/
	    }
	}

	system_reset();
	system_start();
	TDM_isCDDA = 0;
	XPORT_play20video(XPORT_OFFSET_GET_SECTOR, 2048);
	TDM_turn_on();

	next_time = glbTimer + TWO_SECOND;
	timeout = 0;

	while (!TDM_found_begCDtime) {
	    /* 
	     * There may not be any SYNC pattern (CDDA disk), so we'll
	     * conclude that we are not getting the data if we have
	     * been sitting here for .5 second
	     */
	    if ((glbTimer > next_time) || (currCDtime > endCDtime)) {
		/*
		 * Check one more time. In case CDI_get is cleared since
		 * I checked it the last time. If we just turn off TDM,
		 * then there is some chance that nobody will turn
		 * TDM on again (because CDI_get is cleared)
		 */
		timeout = 1;
		break;
	    }
            check_user_input();
#ifdef ECHO
	    MIC_service();
#endif


#ifdef SERVO
	    SERVO_service(1);
#endif
	}

	/* check if the data tranfer is done */
	if (!timeout) {
	    /* Timeout to avoid hanging */
#ifdef FLASH_UPDATE
	    /* we may use getsectors() for "big" files */
	    tmp = (num>>6 - num>>9 - num>>12); /* ~(num/75) */
	    tmp = TWO_SECOND + tmp*ONE_SECOND;
	    next_time = glbTimer + tmp;
#else
	    next_time = glbTimer + TWO_SECOND;