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Sample Programs from NeXSTEP 3.3

/*
 * cd_commands.h: header file for cd_commands.c
 *
 * History
 * -------
 * Mon Sep 16 15:57:35 PDT 1991 James C. Lee at NeXT
 *  Created
 */

#ifndef CD_COMMANDS
#define CD_COMMANDS

#import <sys/types.h>
#import <libc.h>
#import <bsd/dev/scsireg.h>
#import <sys/time.h>

/* start/stop command (C6OP_STARTSTOP = 1Bh) */
struct start_stop_cmd {
	u_char	ssc_opcode;
	u_char	ssc_lun:3,
			ssc_reserved:4,
			ssc_imm:1;
	u_int	ssc_reserved2:22,
			ssc_loej:1,
			ssc_start:1,
			ssc_control:8;
};

/* read toc reply header */
struct rtr_header {
	u_int	rtr_datalength:16,
			rtr_firsttrack:8,
			rtr_lasttrack:8;
};

/* read toc reply descriptor */
struct rtr10_desc {
	u_int	t10d_reserved:12,
			t10d_control:4,
			t10d_track:8,
			t10d_reserved2:8;
	u_int	t10d_hour:8,
			t10d_min:8,
			t10d_sec:8,
			t10d_frame:8;
};

/* read toc reply with one descriptor, to read more than 1 descriptor
   blocks at a time, one must allocate
   sizeof(struct rtr10_desc)*num_descriptrs+sizeof(struct_rtr_header) bytes,
   and then traverse through the memory */

struct toc10_reply {
	struct rtr_header	h;
	struct rtr10_desc	d;	/* one descriptor block */
};

/* an entry to toc info */
struct toc_info {
	u_char	control;	/* control bits */
	u_int	hour:8,		/* msf address */
			min:8,
			sec:8,
			frame;		/* not too sure what this byte is */
};

/* control bits */
#define PRE_EMPHASIS	0x1	/* pre-emphasis or not */
#define DIGITAL_COPY	0x2	/* digital copy permitted (1) or not (0) */
#define DATA_TRACK		0x4	/* data track (1) or autio track (0) */
#define FOUR_CHANNEL	0x8	/* four channel (1) or two channel (0) */

/* entire table of contents */
struct toc_all {
	u_short			firsttrack:8,
					lasttrack:8;
	int				naudio,	/* number of audio tracks */
					ndata,	/* number of data tracks */
					lastDataBlock;	/* very last data block */
	struct toc_info	info[101];	/* 0-99 + transition area (100) */
};

#define C10OP_READTOC 0x43	/* read toc10 command */
/* read toc10 command (C10OP_READTOC = 43h) */
struct readtoc10_cmd {
	u_char	rt10_op_code;
	u_char	rt10_lun:3,
			rt10_reserved:3,
			rt10_msf:1,
			rt10_reserved2:1;
	u_int	rt10_reserved3;
	u_int	rt10_starttrack:8,
			rt10_length:16,
			rt10_control:8;
};

#define C6OP_PLAYAUDIO 0xc8
/* play audio command (C6OP_PLAYAUDIO = c8h) */
struct playaudio_cmd {
	u_char	pa_op_code;
	u_char	pa_lun:3,
			pa_reserved:5;
	u_int	pa_lba;		/* lba to start playing */
	u_int	pa_reserved2:8,
			pa_length:16,
			pa_control:8;
};

#define C10OP_PAUSE 0xc5
/* pause audio commnad (C10OP_PAUSE = c5h) */
struct pause_cmd {
	u_char	p_op_code;
	u_int	p_lun:3,
			p_pause:1,
			p_reserved:28;
	u_int	p_reserved2;
	u_char	p_control;
};

/* msf data format */
struct msf {
	u_int	hour:8,
			min:8,
			sec:8,
			frame:8;
};

#define C10OP_PLAYAUDIO_MSF 0x47
/* play audio msf command (C6OP_PLAYAUDIO = 47h) */
struct playaudio_msf_cmd {
	u_char	pam_op_code;
	u_char	pam_lun:3,
			pam_reserved:5;
	u_int	pam_reserved2:8,
			pam_start_min:8,
			pam_start_sec:8,
			pam_start_frame:8;
	u_int	pam_end_min:8,
			pam_end_sec:8,
			pam_end_frame:8,
			pam_control:8;
};

/**********************************************************
 * sub channel
 **********************************************************/
#define C10OP_READSUBHCANNEL 0x42
/* read sub-channel (C10OP_READSUBHCANNEL = 42h) */
struct readsc_cmd {
	u_int	rsc_op_code:8,
			rsc_lun:3,
			rsc_reserved:3,
			rsc_msf:1,
			rsc_reserved2:2,
			rsc_subq:1,			/* sub-channel data or not (not=just header) */
			rsc_reserved3:6,
			rsc_dformat:8;
	u_short	rsc_reserved4;
	u_int	rsc_track:8,
			rsc_length:16,
			rsc_control:8;
};

/* sub-channel data header */
struct sc_header {
	u_int	sch_reserved:8,
			sch_astatus:8,	/* audio status */
			sch_length:16;	/* sub-channel data length */
};

/* sub-channel data format page 1: CD-ROM current position data block */
struct sc_cur_pos {
	u_int	sc1_data_code:8,
			sc1_reserved:4,
			sc1_control:4,
			sc1_track:8,
			sc1_index:8;
	u_int	sc1_abs_addr;
	u_int	sc1_rel_addr;
};

/* sub-channel data format page 2: Media Catalog Number Data Format */
struct sc_med_cat {
	u_int	sc2_data_code:8,
			sc2_reserved:24;
	u_char	sc2_mcval:1,
			sc2_reserved2:7;
	u_char	sc2_med_cat[15];
};

/* sub-channel data format page 3: Track International Standard Recording Data
	Format */
struct sc_isrc {
	u_int	sc3_data_code:8,
			sc3_reserved:8,
			sc3_track:8,
			sc3_reserved2:8;
	u_char	sc3_tcval:1,
			sc3_reserved3:7;
	u_char	sc3_isrc[15];
};

/* sub-channel reply */
struct sc_reply {
	struct sc_header	scr_header;
	union {
		struct sc_cur_pos	u_scr_cur_pos;
		struct sc_med_cat	u_scr_med_cat;
		struct sc_isrc		u_scr_isrc;
	}u;
};

/**********************************************************
 * playback status & playback control
 **********************************************************/
#define C10OP_PLAYBACKCONTROL 0xc9
#define C10OP_PLAYBACKSTATUS 0xc4
struct playback_cmd {
	u_char		pb_opcode;
	u_int		pb_lun:3,
				pb_reserved:29;
	u_int		pb_reserved2:16,
				pb_length:16;
	u_char		pb_control;
};

struct playback_data {
	u_int		pbd_reserved;
	u_int		pbd_reserved2;
	u_short		pbd_reserved3;
	u_int		pbd_reserved4:4,
				pbd_ch0_sel:4,
				pbd_ch0_vol:8,
				pbd_reserved5:4,
				pbd_ch1_sel:4,
				pbd_ch1_vol:8;
	u_int		pbd_reserved6:4,
				pbd_ch2_sel:4,
				pbd_ch2_vol:8,
				pbd_reserved7:4,
				pbd_ch3_sel:4,
				pbd_ch3_vol:8;
};

int	do_eject(int fd, struct timeval *tvp, struct esense_reply *erp);
int	do_spinup(int fd, struct timeval *tvp, struct esense_reply *erp);
int do_readtoc(int fd, int track, struct toc10_reply *tocr,
	struct esense_reply *erp);
int do_readtoc_all(int fd, struct toc_all *toc_all, struct esense_reply *erp);
int do_playaudio(int fd, int lba, int length, struct esense_reply *erp);
int do_pauseaudio(int fd, int pause, struct esense_reply *erp);
int do_playaudio_msf(int fd, struct msf startmsf, struct msf endmsf,
	struct esense_reply *erp);
int	do_readsubchannel(int fd, int msf, int subq, int page, int track,
	struct sc_reply *scrp, struct esense_reply *erp);
int	do_playbackstatus(int fd, struct playback_data *pbdatap,
	struct esense_reply *erp);
int	do_playbackcontrol(int fd, struct playback_data *pbdatap,
	struct esense_reply *erp);


void printf_sc(int page, struct sc_reply *scrp);
void printf_pb(struct playback_data *pbdatap);

#endif

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