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GuruMeditation
Docs » Include » devices » cd.h / .i
#ifndef DEVICES_CD_H
#define DEVICES_CD_H
/*
**	$VER: cd.h 1.11 (12.8.1993)
**	Includes Release 45.1
**
**	cd.device include file
**
**	(C) Copyright 1992-2001 Amiga, Inc.
**	    All Rights Reserved
*/

#include <exec/types.h>
#include <exec/nodes.h>


/**************************************************************************
 *									  *
 *   CD Commands							  *
 *									  *
 **************************************************************************/

#define CD_RESET	     1
#define CD_READ	     2
#define CD_WRITE	     3
#define CD_UPDATE	     4
#define CD_CLEAR	     5
#define CD_STOP	     6
#define CD_START	     7
#define CD_FLUSH	     8
#define CD_MOTOR	     9
#define CD_SEEK	    10
#define CD_FORMAT	    11
#define CD_REMOVE	    12
#define CD_CHANGENUM	    13
#define CD_CHANGESTATE	    14
#define CD_PROTSTATUS	    15

#define CD_GETDRIVETYPE     18
#define CD_GETNUMTRACKS     19
#define CD_ADDCHANGEINT     20
#define CD_REMCHANGEINT     21
#define CD_GETGEOMETRY	    22
#define CD_EJECT	    23


#define CD_INFO	    32
#define CD_CONFIG	    33
#define CD_TOCMSF	    34
#define CD_TOCLSN	    35

#define CD_READXL	    36

#define CD_PLAYTRACK	    37
#define CD_PLAYMSF	    38
#define CD_PLAYLSN	    39
#define CD_PAUSE	    40
#define CD_SEARCH	    41

#define CD_QCODEMSF	    42
#define CD_QCODELSN	    43
#define CD_ATTENUATE	    44

#define CD_ADDFRAMEINT	    45
#define CD_REMFRAMEINT	    46


/**************************************************************************
 *									  *
 *   Device Driver Error Codes						  *
 *									  *
 **************************************************************************/

#define CDERR_OPENFAIL	     (-1) /* device/unit failed to open	  */
#define CDERR_ABORTED	     (-2) /* request terminated early		  */
#define CDERR_NOCMD	     (-3) /* command not supported by device	  */
#define CDERR_BADLENGTH      (-4) /* invalid length (IO_LENGTH/IO_OFFSET) */
#define CDERR_BADADDRESS     (-5) /* invalid address (IO_DATA misaligned) */
#define CDERR_UNITBUSY	     (-6) /* device opens ok, but unit is busy	  */
#define CDERR_SELFTEST	     (-7) /* hardware failed self-test		  */

#define CDERR_NotSpecified   20   /* general catchall			  */
#define CDERR_NoSecHdr	     21   /* couldn't even find a sector	  */
#define CDERR_BadSecPreamble 22   /* sector looked wrong		  */
#define CDERR_BadSecID	     23   /* ditto				  */
#define CDERR_BadHdrSum      24   /* header had incorrect checksum	  */
#define CDERR_BadSecSum      25   /* data had incorrect checksum	  */
#define CDERR_TooFewSecs     26   /* couldn't find enough sectors	  */
#define CDERR_BadSecHdr      27   /* another "sector looked wrong"	  */
#define CDERR_WriteProt      28   /* can't write to a protected disk	  */
#define CDERR_NoDisk	     29   /* no disk in the drive		  */
#define CDERR_SeekError      30   /* couldn't find track 0		  */
#define CDERR_NoMem	     31   /* ran out of memory			  */
#define CDERR_BadUnitNum     32   /* asked for a unit > NUMUNITS	  */
#define CDERR_BadDriveType   33   /* not a drive cd.device understands	  */
#define CDERR_DriveInUse     34   /* someone else allocated the drive	  */
#define CDERR_PostReset      35   /* user hit reset; awaiting doom	  */
#define CDERR_BadDataType    36   /* data on disk is wrong type	  */
#define CDERR_InvalidState   37   /* invalid cmd under current conditions */

#define CDERR_Phase	     42   /* illegal or unexpected SCSI phase	  */
#define CDERR_NoBoard	     50   /* open failed for non-existant board   */



/**************************************************************************
 *									  *
 * Configuration							  *
 *									  *
 *	 The drive is configured by TagList items defined as follows:	  *
 *									  *
 **************************************************************************/

#define TAGCD_PLAYSPEED	0x0001
#define TAGCD_READSPEED	0x0002
#define TAGCD_READXLSPEED	0x0003
#define TAGCD_SECTORSIZE	0x0004
#define TAGCD_XLECC		0x0005
#define TAGCD_EJECTRESET	0x0006


/**************************************************************************
 *									  *
 * Information								  *
 *									  *
 *	Information/Status structure describes current speed settings	  *
 *	for read and play commands, sector size, audio attenuation	  *
 *	precision, and drive status.					  *
 *									  *
 **************************************************************************/

struct CDInfo {
			    /*				      Default	  */
    UWORD   PlaySpeed;	    /* Audio play speed	      (75)	  */
    UWORD   ReadSpeed;	    /* Data-rate of CD_READ command   (Max)	  */
    UWORD   ReadXLSpeed;    /* Data-rate of CD_READXL command (75)	  */
    UWORD   SectorSize;     /* Number of bytes per sector     (2048)	  */
    UWORD   XLECC;	    /* CDXL ECC enabled/disabled		  */
    UWORD   EjectReset;     /* Reset on eject enabled/disabled		  */
    UWORD   Reserved1[4];   /* Reserved for future expansion		  */

    UWORD   MaxSpeed;	    /* Maximum speed drive can handle (75, 150)   */
    UWORD   AudioPrecision; /* 0 = no attenuator, 1 = mute only,	  */
			    /* other = (# levels - 1)			  */
    UWORD   Status;	    /* See flags below				  */
    UWORD   Reserved2[4];   /* Reserved for future expansion		  */
    };


/* Flags for Status */

#define CDSTSB_CLOSED	 0 /* Drive door is closed			  */
#define CDSTSB_DISK	 1 /* A disk has been detected			  */
#define CDSTSB_SPIN	 2 /* Disk is spinning (motor is on)		  */
#define CDSTSB_TOC	 3 /* Table of contents read.  Disk is valid.	  */
#define CDSTSB_CDROM	 4 /* Track 1 contains CD-ROM data		  */
#define CDSTSB_PLAYING	 5 /* Audio is playing				  */
#define CDSTSB_PAUSED	 6 /* Pause mode (pauses on play command)	  */
#define CDSTSB_SEARCH	 7 /* Search mode (Fast Forward/Fast Reverse)	  */
#define CDSTSB_DIRECTION 8 /* Search direction (0 = Forward, 1 = Reverse) */

#define CDSTSF_CLOSED	 0x0001
#define CDSTSF_DISK	 0x0002
#define CDSTSF_SPIN	 0x0004
#define CDSTSF_TOC	 0x0008
#define CDSTSF_CDROM	 0x0010
#define CDSTSF_PLAYING	 0x0020
#define CDSTSF_PAUSED	 0x0040
#define CDSTSF_SEARCH	 0x0080
#define CDSTSF_DIRECTION 0x0100


/* Modes for CD_SEARCH */

#define CDMODE_NORMAL	0	  /* Normal play at current play speed	  */
#define CDMODE_FFWD	1	  /* Fast forward play (skip-play forward)*/
#define CDMODE_FREV	2	  /* Fast reverse play (skip-play reverse)*/


/**************************************************************************
 *									  *
 * Position Information						  *
 *									  *
 *	Position information can be described in two forms: MSF and LSN   *
 *	form.  MSF (Minutes, Seconds, Frames) form is a time encoding.	  *
 *	LSN (Logical Sector Number) form is frame (sector) count.	  *
 *	The desired form is selected using the io_Flags field of the	  *
 *	IOStdReq structure.  The flags and the union are described	  *
 *	below.								  *
 *									  *
 **************************************************************************/

struct RMSF {

    UBYTE   Reserved;	    /* Reserved (always zero) */
    UBYTE   Minute;	    /* Minutes (0-72ish)      */
    UBYTE   Second;	    /* Seconds (0-59)	      */
    UBYTE   Frame;	    /* Frame   (0-74)	      */
    };

union LSNMSF {

    struct  RMSF MSF;	    /* Minute, Second, Frame  */
    ULONG   LSN;	    /* Logical Sector Number  */
    };


/**************************************************************************
 *									  *
 * CD Transfer Lists							  *
 *									  *
 *	A CDXL node is a double link node; however only single linkage	  *
 *	is used by the device driver.  If you wish to construct a	  *
 *	transfer list manually, it is only neccessary to define the	  *
 *	mln_Succ pointer of the MinNode.  You may also use the Exec	  *
 *	list functions by defining a List or MinList structure and by	  *
 *	using the AddHead/AddTail functions to create the list.  This	  *
 *	will create a double-linked list.  Although a double-linked	  *
 *	list is not required by the device driver, you may wish use it	  *
 *	for your own purposes.	Don't forget to initialize the		  *
 *	the List/MinList before using it!				  *
 *									  *
 **************************************************************************/

struct	CDXL {

    struct MinNode    Node;	       /* double linkage		  */
    char	     *Buffer;	       /* data destination (word aligned) */
    LONG	      Length;	       /* must be even # bytes		  */
    LONG	      Actual;	       /* bytes transferred		  */
    APTR	      IntData;	       /* interrupt server data segment   */
    VOID	      (*IntCode)();    /* interrupt server code entry	  */
    };


/**************************************************************************
 *									  *
 * CD Table of Contents						  *
 *									  *
 *	The CD_TOC command returns an array of CDTOC entries.		  *
 *	Entry zero contains summary information describing how many	  *
 *	tracks the disk has and the play-time of the disk.		  *
 *	Entries 1 through N (N = Number of tracks on disk) contain	  *
 *	information about the track.					  *
 *									  *
 **************************************************************************/

struct TOCSummary {

    UBYTE	 FirstTrack; /* First track on disk (always 1)		  */
    UBYTE	 LastTrack;  /* Last track on disk			  */
    union LSNMSF LeadOut;    /* Beginning of lead-out track (end of disk) */
    };


struct TOCEntry {

    UBYTE	 CtlAdr;     /* Q-Code info		     */
    UBYTE	 Track;      /* Track number		     */
    union LSNMSF Position;   /* Start position of this track */
    };


union CDTOC {

    struct TOCSummary Summary;	/* First entry (0) is summary information */
    struct TOCEntry   Entry;	/* Entries 1-N are track entries	  */
    };



/**************************************************************************
 *									  *
 * Q-Code Packets							  *
 *									  *
 *	Q-Code packets are only returned when audio is playing.	  *
 *	Currently, only position packets are returned (ADR_POSITION)	  *
 *	The other ADR_ types are almost never encoded on the disk	  *
 *	and are of little use anyway.  To avoid making the QCode	  *
 *	structure a union, these other ADR_ structures are not defined.   *
 *									  *
 **************************************************************************/

struct QCode {

    UBYTE	 CtlAdr;	/* Data type / QCode type	    */
    UBYTE	 Track;	/* Track number		    */
    UBYTE	 Index;	/* Track subindex number	    */
    UBYTE	 Zero;		/* The "Zero" byte of Q-Code packet */
    union LSNMSF TrackPosition; /* Position from start of track     */
    union LSNMSF DiskPosition;	/* Position from start of disk	    */
    };


#define CTLADR_CTLMASK 0xF0   /* Control field */

#define CTL_CTLMASK    0xD0   /* To be ANDed with CtlAdr before compared  */

#define CTL_2AUD       0x00   /* 2 audio channels without preemphasis	  */
#define CTL_2AUDEMPH   0x10   /* 2 audio channels with preemphasis	  */
#define CTL_4AUD       0x80   /* 4 audio channels without preemphasis	  */
#define CTL_4AUDEMPH   0x90   /* 4 audio channels with preemphasis	  */
#define CTL_DATA       0x40   /* CD-ROM Data				  */

#define CTL_COPYMASK   0x20   /* To be ANDed with CtlAdr before compared  */

#define CTL_COPY       0x20   /* When true, this audio/data can be copied */

#define CTLADR_ADRMASK 0x0F   /* Address field				  */

#define ADR_POSITION   0x01   /* Q-Code is position information	  */
#define ADR_UPC        0x02   /* Q-Code is UPC information (not used)	  */
#define ADR_ISRC       0x03   /* Q-Code is ISRC (not used)		  */
#define ADR_HYBRID     0x05   /* This disk is a hybrid disk		  */


#endif

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