[sdl_omap.git] / src / cdrom / openbsd / SDL_syscdrom.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifdef SDL_CDROM_OPENBSD

/* Functions for system-level CD-ROM audio control */

#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/cdio.h>

#include "SDL_cdrom.h"
#include "../SDL_syscdrom.h"


/* The maximum number of CD-ROM drives we'll detect */
#define MAX_DRIVES	16	

/* A list of available CD-ROM drives */
static char *SDL_cdlist[MAX_DRIVES];
static dev_t SDL_cdmode[MAX_DRIVES];

/* The system-dependent CD control functions */
static const char *SDL_SYS_CDName(int drive);
static int SDL_SYS_CDOpen(int drive);
static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
static int SDL_SYS_CDPause(SDL_CD *cdrom);
static int SDL_SYS_CDResume(SDL_CD *cdrom);
static int SDL_SYS_CDStop(SDL_CD *cdrom);
static int SDL_SYS_CDEject(SDL_CD *cdrom);
static void SDL_SYS_CDClose(SDL_CD *cdrom);

/* Some ioctl() errno values which occur when the tray is empty */
#define ERRNO_TRAYEMPTY(errno)	\
	((errno == EIO) || (errno == ENOENT) || (errno == EINVAL) || \
	 (errno == ENODEV))

/* Check a drive to see if it is a CD-ROM */
static int CheckDrive(char *drive, struct stat *stbuf)
{
	int is_cd, cdfd;
	struct ioc_read_subchannel info;

	/* If it doesn't exist, return -1 */
	if ( stat(drive, stbuf) < 0 ) {
		return(-1);
	}

	/* If it does exist, verify that it's an available CD-ROM */
	is_cd = 0;
	if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) {
		cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0);
		if ( cdfd >= 0 ) {
			info.address_format = CD_MSF_FORMAT;
			info.data_format = CD_CURRENT_POSITION;
			info.data_len = 0;
			info.data = NULL;
			/* Under Linux, EIO occurs when a disk is not present.
			   This isn't 100% reliable, so we use the USE_MNTENT
			   code above instead.
			 */
			if ( (ioctl(cdfd, CDIOCREADSUBCHANNEL, &info) == 0) ||
						ERRNO_TRAYEMPTY(errno) ) {
				is_cd = 1;
			}
			close(cdfd);
		}
		else if (ERRNO_TRAYEMPTY(errno))
			is_cd = 1;
	}
	return(is_cd);
}

/* Add a CD-ROM drive to our list of valid drives */
static void AddDrive(char *drive, struct stat *stbuf)
{
	int i;

	if ( SDL_numcds < MAX_DRIVES ) {
		/* Check to make sure it's not already in our list.
	 	   This can happen when we see a drive via symbolic link.
		 */
		for ( i=0; i<SDL_numcds; ++i ) {
			if ( stbuf->st_rdev == SDL_cdmode[i] ) {
#ifdef DEBUG_CDROM
  fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
#endif
				return;
			}
		}

		/* Add this drive to our list */
		i = SDL_numcds;
		SDL_cdlist[i] = SDL_strdup(drive);
		if ( SDL_cdlist[i] == NULL ) {
			SDL_OutOfMemory();
			return;
		}
		SDL_cdmode[i] = stbuf->st_rdev;
		++SDL_numcds;
#ifdef DEBUG_CDROM
  fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
#endif
	}
}

int  SDL_SYS_CDInit(void)
{
	static char *checklist[] = {
#if defined(__OPENBSD__)
		"?0 cd?c", "cdrom", NULL
#elif defined(__NETBSD__)
		"?0 cd?d", "?0 cd?c", "cdrom", NULL
#else
		"?0 cd?c", "?0 acd?c", "cdrom", NULL
#endif
	};
	char *SDLcdrom;
	int i, j, exists;
	char drive[32];
	struct stat stbuf;

	/* Fill in our driver capabilities */
	SDL_CDcaps.Name = SDL_SYS_CDName;
	SDL_CDcaps.Open = SDL_SYS_CDOpen;
	SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
	SDL_CDcaps.Status = SDL_SYS_CDStatus;
	SDL_CDcaps.Play = SDL_SYS_CDPlay;
	SDL_CDcaps.Pause = SDL_SYS_CDPause;
	SDL_CDcaps.Resume = SDL_SYS_CDResume;
	SDL_CDcaps.Stop = SDL_SYS_CDStop;
	SDL_CDcaps.Eject = SDL_SYS_CDEject;
	SDL_CDcaps.Close = SDL_SYS_CDClose;

	/* Look in the environment for our CD-ROM drive list */
	SDLcdrom = SDL_getenv("SDL_CDROM");	/* ':' separated list of devices */
	if ( SDLcdrom != NULL ) {
		char *cdpath, *delim;
		size_t len = SDL_strlen(SDLcdrom)+1;
		cdpath = SDL_stack_alloc(char, len);
		if ( cdpath != NULL ) {
			SDL_strlcpy(cdpath, SDLcdrom, len);
			SDLcdrom = cdpath;
			do {
				delim = SDL_strchr(SDLcdrom, ':');
				if ( delim ) {
					*delim++ = '\0';
				}
				if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) {
					AddDrive(SDLcdrom, &stbuf);
				}
				if ( delim ) {
					SDLcdrom = delim;
				} else {
					SDLcdrom = NULL;
				}
			} while ( SDLcdrom );
			SDL_stack_free(cdpath);
		}

		/* If we found our drives, there's nothing left to do */
		if ( SDL_numcds > 0 ) {
			return(0);
		}
	}

	/* Scan the system for CD-ROM drives */
	for ( i=0; checklist[i]; ++i ) {
		if ( checklist[i][0] == '?' ) {
			char *insert;
			exists = 1;
			for ( j=checklist[i][1]; exists; ++j ) {
				SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", &checklist[i][3]);
				insert = SDL_strchr(drive, '?');
				if ( insert != NULL ) {
					*insert = j;
				}
				switch (CheckDrive(drive, &stbuf)) {
					/* Drive exists and is a CD-ROM */
					case 1:
						AddDrive(drive, &stbuf);
						break;
					/* Drive exists, but isn't a CD-ROM */
					case 0:
						break;
					/* Drive doesn't exist */
					case -1:
						exists = 0;
						break;
				}
			}
		} else {
			SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]);
			if ( CheckDrive(drive, &stbuf) > 0 ) {
				AddDrive(drive, &stbuf);
			}
		}
	}
	return(0);
}

/* General ioctl() CD-ROM command function */
static int SDL_SYS_CDioctl(int id, int command, void *arg)
{
	int retval;

	retval = ioctl(id, command, arg);
	if ( retval < 0 ) {
		SDL_SetError("ioctl() error: %s", strerror(errno));
	}
	return(retval);
}

static const char *SDL_SYS_CDName(int drive)
{
	return(SDL_cdlist[drive]);
}

static int SDL_SYS_CDOpen(int drive)
{
	return(open(SDL_cdlist[drive], (O_RDONLY|O_EXCL|O_NONBLOCK), 0));
}

static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
{
	struct ioc_toc_header toc;
	int i, okay;
	struct ioc_read_toc_entry entry;
	struct cd_toc_entry data;

	okay = 0;
	if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCHEADER, &toc) == 0 ) {
		cdrom->numtracks = toc.ending_track-toc.starting_track+1;
		if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
			cdrom->numtracks = SDL_MAX_TRACKS;
		}
		/* Read all the track TOC entries */
		for ( i=0; i<=cdrom->numtracks; ++i ) {
			if ( i == cdrom->numtracks ) {
				cdrom->track[i].id = 0xAA; /* CDROM_LEADOUT */
			} else {
				cdrom->track[i].id = toc.starting_track+i;
			}
			entry.starting_track = cdrom->track[i].id;
			entry.address_format = CD_MSF_FORMAT;
			entry.data_len = sizeof(data);
			entry.data = &data;
			if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCENTRYS,
								&entry) < 0 ) {
				break;
			} else {
				cdrom->track[i].type = data.control;
				cdrom->track[i].offset = MSF_TO_FRAMES(
						data.addr.msf.minute,
						data.addr.msf.second,
						data.addr.msf.frame);
				cdrom->track[i].length = 0;
				if ( i > 0 ) {
					cdrom->track[i-1].length =
						cdrom->track[i].offset-
						cdrom->track[i-1].offset;
				}
			}
		}
		if ( i == (cdrom->numtracks+1) ) {
			okay = 1;
		}
	}
	return(okay ? 0 : -1);
}

/* Get CD-ROM status */
static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
{
	CDstatus status;
	struct ioc_toc_header toc;
	struct ioc_read_subchannel info;
	struct cd_sub_channel_info data;

	info.address_format = CD_MSF_FORMAT;
	info.data_format = CD_CURRENT_POSITION;
	info.track = 0;
	info.data_len = sizeof(data);
	info.data = &data;
	if ( ioctl(cdrom->id, CDIOCREADSUBCHANNEL, &info) < 0 ) {
		if ( ERRNO_TRAYEMPTY(errno) ) {
			status = CD_TRAYEMPTY;
		} else {
			status = CD_ERROR;
		}
	} else {
		switch (data.header.audio_status) {
			case CD_AS_AUDIO_INVALID:
			case CD_AS_NO_STATUS:
				/* Try to determine if there's a CD available */
				if (ioctl(cdrom->id,CDIOREADTOCHEADER,&toc)==0)
					status = CD_STOPPED;
				else
					status = CD_TRAYEMPTY;
				break;
			case CD_AS_PLAY_COMPLETED:
				status = CD_STOPPED;
				break;
			case CD_AS_PLAY_IN_PROGRESS:
				status = CD_PLAYING;
				break;
			case CD_AS_PLAY_PAUSED:
				status = CD_PAUSED;
				break;
			default:
				status = CD_ERROR;
				break;
		}
	}
	if ( position ) {
		if ( status == CD_PLAYING || (status == CD_PAUSED) ) {
			*position = MSF_TO_FRAMES(
					data.what.position.absaddr.msf.minute,
					data.what.position.absaddr.msf.second,
					data.what.position.absaddr.msf.frame);
		} else {
			*position = 0;
		}
	}
	return(status);
}

/* Start play */
static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
{
	struct ioc_play_msf playtime;

	FRAMES_TO_MSF(start,
		&playtime.start_m, &playtime.start_s, &playtime.start_f);
	FRAMES_TO_MSF(start+length,
		&playtime.end_m, &playtime.end_s, &playtime.end_f);
#ifdef DEBUG_CDROM
  fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
	playtime.start_m, playtime.start_s, playtime.start_f,
	playtime.end_m, playtime.end_s, playtime.end_f);
#endif
	ioctl(cdrom->id, CDIOCSTART, 0);
	return(SDL_SYS_CDioctl(cdrom->id, CDIOCPLAYMSF, &playtime));
}

/* Pause play */
static int SDL_SYS_CDPause(SDL_CD *cdrom)
{
	return(SDL_SYS_CDioctl(cdrom->id, CDIOCPAUSE, 0));
}

/* Resume play */
static int SDL_SYS_CDResume(SDL_CD *cdrom)
{
	return(SDL_SYS_CDioctl(cdrom->id, CDIOCRESUME, 0));
}

/* Stop play */
static int SDL_SYS_CDStop(SDL_CD *cdrom)
{
	return(SDL_SYS_CDioctl(cdrom->id, CDIOCSTOP, 0));
}

/* Eject the CD-ROM */
static int SDL_SYS_CDEject(SDL_CD *cdrom)
{
	SDL_SYS_CDioctl(cdrom->id, CDIOCALLOW, 0);
	return(SDL_SYS_CDioctl(cdrom->id, CDIOCEJECT, 0));
}

/* Close the CD-ROM handle */
static void SDL_SYS_CDClose(SDL_CD *cdrom)
{
	close(cdrom->id);
}

void SDL_SYS_CDQuit(void)
{
	int i;

	if ( SDL_numcds > 0 ) {
		for ( i=0; i<SDL_numcds; ++i ) {
			SDL_free(SDL_cdlist[i]);
		}
		SDL_numcds = 0;
	}
}

#endif /* SDL_CDROM_OPENBSD */
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 Sam Lantinga
	4
	5	This library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	This library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with this library; if not, write to the Free Software
	17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18
	19	Sam Lantinga
	20	slouken@libsdl.org
	21	*/
	22	#include "SDL_config.h"
	23
	24	#ifdef SDL_CDROM_OPENBSD
	25
	26	/* Functions for system-level CD-ROM audio control */
	27
	28	#include <sys/types.h>
	29	#include <sys/ioctl.h>
	30	#include <sys/stat.h>
	31	#include <fcntl.h>
	32	#include <errno.h>
	33	#include <unistd.h>
	34	#include <sys/ioctl.h>
	35	#include <sys/cdio.h>
	36
	37	#include "SDL_cdrom.h"
	38	#include "../SDL_syscdrom.h"
	39
	40
	41	/* The maximum number of CD-ROM drives we'll detect */
	42	#define MAX_DRIVES 16
	43
	44	/* A list of available CD-ROM drives */
	45	static char *SDL_cdlist[MAX_DRIVES];
	46	static dev_t SDL_cdmode[MAX_DRIVES];
	47
	48	/* The system-dependent CD control functions */
	49	static const char *SDL_SYS_CDName(int drive);
	50	static int SDL_SYS_CDOpen(int drive);
	51	static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
	52	static CDstatus SDL_SYS_CDStatus(SDL_CD cdrom, int position);
	53	static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
	54	static int SDL_SYS_CDPause(SDL_CD *cdrom);
	55	static int SDL_SYS_CDResume(SDL_CD *cdrom);
	56	static int SDL_SYS_CDStop(SDL_CD *cdrom);
	57	static int SDL_SYS_CDEject(SDL_CD *cdrom);
	58	static void SDL_SYS_CDClose(SDL_CD *cdrom);
	59
	60	/* Some ioctl() errno values which occur when the tray is empty */
	61	#define ERRNO_TRAYEMPTY(errno) \
	62	((errno == EIO) \|\| (errno == ENOENT) \|\| (errno == EINVAL) \|\| \
	63	(errno == ENODEV))
	64
65	/* Check a drive to see if it is a CD-ROM */
66	static int CheckDrive(char drive, struct stat stbuf)
67	{
68	int is_cd, cdfd;
69	struct ioc_read_subchannel info;
70
71	/* If it doesn't exist, return -1 */
72	if ( stat(drive, stbuf) < 0 ) {
73	return(-1);
74	}
75
76	/* If it does exist, verify that it's an available CD-ROM */
77	is_cd = 0;
78	if ( S_ISCHR(stbuf->st_mode) \|\| S_ISBLK(stbuf->st_mode) ) {
79	cdfd = open(drive, (O_RDONLY\|O_EXCL\|O_NONBLOCK), 0);
80	if ( cdfd >= 0 ) {
81	info.address_format = CD_MSF_FORMAT;
82	info.data_format = CD_CURRENT_POSITION;
83	info.data_len = 0;
84	info.data = NULL;
85	/* Under Linux, EIO occurs when a disk is not present.
86	This isn't 100% reliable, so we use the USE_MNTENT
87	code above instead.
88	*/
89	if ( (ioctl(cdfd, CDIOCREADSUBCHANNEL, &info) == 0) \|\|
90	ERRNO_TRAYEMPTY(errno) ) {
91	is_cd = 1;
92	}
93	close(cdfd);
94	}
95	else if (ERRNO_TRAYEMPTY(errno))
96	is_cd = 1;
97	}
98	return(is_cd);
99	}
100
101	/* Add a CD-ROM drive to our list of valid drives */
102	static void AddDrive(char drive, struct stat stbuf)
103	{
104	int i;
105
106	if ( SDL_numcds < MAX_DRIVES ) {
107	/* Check to make sure it's not already in our list.
108	This can happen when we see a drive via symbolic link.
109	*/
110	for ( i=0; i<SDL_numcds; ++i ) {
111	if ( stbuf->st_rdev == SDL_cdmode[i] ) {
112	#ifdef DEBUG_CDROM
113	fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
114	#endif
115	return;
116	}
117	}
118
119	/* Add this drive to our list */
120	i = SDL_numcds;
121	SDL_cdlist[i] = SDL_strdup(drive);
122	if ( SDL_cdlist[i] == NULL ) {
123	SDL_OutOfMemory();
124	return;
125	}
126	SDL_cdmode[i] = stbuf->st_rdev;
127	++SDL_numcds;
128	#ifdef DEBUG_CDROM
129	fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
130	#endif
131	}
132	}
133
134	int SDL_SYS_CDInit(void)
135	{
136	static char *checklist[] = {
137	#if defined(__OPENBSD__)
138	"?0 cd?c", "cdrom", NULL
139	#elif defined(__NETBSD__)
140	"?0 cd?d", "?0 cd?c", "cdrom", NULL
141	#else
142	"?0 cd?c", "?0 acd?c", "cdrom", NULL
143	#endif
144	};
145	char *SDLcdrom;
146	int i, j, exists;
147	char drive[32];
148	struct stat stbuf;
149
150	/* Fill in our driver capabilities */
151	SDL_CDcaps.Name = SDL_SYS_CDName;
152	SDL_CDcaps.Open = SDL_SYS_CDOpen;
153	SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
154	SDL_CDcaps.Status = SDL_SYS_CDStatus;
155	SDL_CDcaps.Play = SDL_SYS_CDPlay;
156	SDL_CDcaps.Pause = SDL_SYS_CDPause;
157	SDL_CDcaps.Resume = SDL_SYS_CDResume;
158	SDL_CDcaps.Stop = SDL_SYS_CDStop;
159	SDL_CDcaps.Eject = SDL_SYS_CDEject;
160	SDL_CDcaps.Close = SDL_SYS_CDClose;
161
162	/* Look in the environment for our CD-ROM drive list */
163	SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */
164	if ( SDLcdrom != NULL ) {
165	char cdpath, delim;
166	size_t len = SDL_strlen(SDLcdrom)+1;
167	cdpath = SDL_stack_alloc(char, len);
168	if ( cdpath != NULL ) {
169	SDL_strlcpy(cdpath, SDLcdrom, len);
170	SDLcdrom = cdpath;
171	do {
172	delim = SDL_strchr(SDLcdrom, ':');
173	if ( delim ) {
174	*delim++ = '\0';
175	}
176	if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) {
177	AddDrive(SDLcdrom, &stbuf);
178	}
179	if ( delim ) {
180	SDLcdrom = delim;
181	} else {
182	SDLcdrom = NULL;
183	}
184	} while ( SDLcdrom );
185	SDL_stack_free(cdpath);
186	}
187
188	/* If we found our drives, there's nothing left to do */
189	if ( SDL_numcds > 0 ) {
190	return(0);
191	}
192	}
193
194	/* Scan the system for CD-ROM drives */
195	for ( i=0; checklist[i]; ++i ) {
196	if ( checklist[i][0] == '?' ) {
197	char *insert;
198	exists = 1;
199	for ( j=checklist[i][1]; exists; ++j ) {
200	SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", &checklist[i][3]);
201	insert = SDL_strchr(drive, '?');
202	if ( insert != NULL ) {
203	*insert = j;
204	}
205	switch (CheckDrive(drive, &stbuf)) {
206	/* Drive exists and is a CD-ROM */
207	case 1:
208	AddDrive(drive, &stbuf);
209	break;
210	/* Drive exists, but isn't a CD-ROM */
211	case 0:
212	break;
213	/* Drive doesn't exist */
214	case -1:
215	exists = 0;
216	break;
217	}
218	}
219	} else {
220	SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]);
221	if ( CheckDrive(drive, &stbuf) > 0 ) {
222	AddDrive(drive, &stbuf);
223	}
224	}
225	}
226	return(0);
227	}
228
229	/* General ioctl() CD-ROM command function */
230	static int SDL_SYS_CDioctl(int id, int command, void *arg)
231	{
232	int retval;
233
234	retval = ioctl(id, command, arg);
235	if ( retval < 0 ) {
236	SDL_SetError("ioctl() error: %s", strerror(errno));
237	}
238	return(retval);
239	}
240
241	static const char *SDL_SYS_CDName(int drive)
242	{
243	return(SDL_cdlist[drive]);
244	}
245
246	static int SDL_SYS_CDOpen(int drive)
247	{
248	return(open(SDL_cdlist[drive], (O_RDONLY\|O_EXCL\|O_NONBLOCK), 0));
249	}
250
251	static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
252	{
253	struct ioc_toc_header toc;
254	int i, okay;
255	struct ioc_read_toc_entry entry;
256	struct cd_toc_entry data;
257
258	okay = 0;
259	if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCHEADER, &toc) == 0 ) {
260	cdrom->numtracks = toc.ending_track-toc.starting_track+1;
261	if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
262	cdrom->numtracks = SDL_MAX_TRACKS;
263	}
264	/* Read all the track TOC entries */
265	for ( i=0; i<=cdrom->numtracks; ++i ) {
266	if ( i == cdrom->numtracks ) {
267	cdrom->track[i].id = 0xAA; /* CDROM_LEADOUT */
268	} else {
269	cdrom->track[i].id = toc.starting_track+i;
270	}
271	entry.starting_track = cdrom->track[i].id;
272	entry.address_format = CD_MSF_FORMAT;
273	entry.data_len = sizeof(data);
274	entry.data = &data;
275	if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCENTRYS,
276	&entry) < 0 ) {
277	break;
278	} else {
279	cdrom->track[i].type = data.control;
280	cdrom->track[i].offset = MSF_TO_FRAMES(
281	data.addr.msf.minute,
282	data.addr.msf.second,
283	data.addr.msf.frame);
284	cdrom->track[i].length = 0;
285	if ( i > 0 ) {
286	cdrom->track[i-1].length =
287	cdrom->track[i].offset-
288	cdrom->track[i-1].offset;
289	}
290	}
291	}
292	if ( i == (cdrom->numtracks+1) ) {
293	okay = 1;
294	}
295	}
296	return(okay ? 0 : -1);
297	}
298
299	/* Get CD-ROM status */
300	static CDstatus SDL_SYS_CDStatus(SDL_CD cdrom, int position)
301	{
302	CDstatus status;
303	struct ioc_toc_header toc;
304	struct ioc_read_subchannel info;
305	struct cd_sub_channel_info data;
306
307	info.address_format = CD_MSF_FORMAT;
308	info.data_format = CD_CURRENT_POSITION;
309	info.track = 0;
310	info.data_len = sizeof(data);
311	info.data = &data;
312	if ( ioctl(cdrom->id, CDIOCREADSUBCHANNEL, &info) < 0 ) {
313	if ( ERRNO_TRAYEMPTY(errno) ) {
314	status = CD_TRAYEMPTY;
315	} else {
316	status = CD_ERROR;
317	}
318	} else {
319	switch (data.header.audio_status) {
320	case CD_AS_AUDIO_INVALID:
321	case CD_AS_NO_STATUS:
322	/* Try to determine if there's a CD available */
323	if (ioctl(cdrom->id,CDIOREADTOCHEADER,&toc)==0)
324	status = CD_STOPPED;
325	else
326	status = CD_TRAYEMPTY;
327	break;
328	case CD_AS_PLAY_COMPLETED:
329	status = CD_STOPPED;
330	break;
331	case CD_AS_PLAY_IN_PROGRESS:
332	status = CD_PLAYING;
333	break;
334	case CD_AS_PLAY_PAUSED:
335	status = CD_PAUSED;
336	break;
337	default:
338	status = CD_ERROR;
339	break;
340	}
341	}
342	if ( position ) {
343	if ( status == CD_PLAYING \|\| (status == CD_PAUSED) ) {
344	*position = MSF_TO_FRAMES(
345	data.what.position.absaddr.msf.minute,
346	data.what.position.absaddr.msf.second,
347	data.what.position.absaddr.msf.frame);
348	} else {
349	*position = 0;
350	}
351	}
352	return(status);
353	}
354
355	/* Start play */
356	static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
357	{
358	struct ioc_play_msf playtime;
359
360	FRAMES_TO_MSF(start,
361	&playtime.start_m, &playtime.start_s, &playtime.start_f);
362	FRAMES_TO_MSF(start+length,
363	&playtime.end_m, &playtime.end_s, &playtime.end_f);
364	#ifdef DEBUG_CDROM
365	fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
366	playtime.start_m, playtime.start_s, playtime.start_f,
367	playtime.end_m, playtime.end_s, playtime.end_f);
368	#endif
369	ioctl(cdrom->id, CDIOCSTART, 0);
370	return(SDL_SYS_CDioctl(cdrom->id, CDIOCPLAYMSF, &playtime));
371	}
372
373	/* Pause play */
374	static int SDL_SYS_CDPause(SDL_CD *cdrom)
375	{
376	return(SDL_SYS_CDioctl(cdrom->id, CDIOCPAUSE, 0));
377	}
378
379	/* Resume play */
380	static int SDL_SYS_CDResume(SDL_CD *cdrom)
381	{
382	return(SDL_SYS_CDioctl(cdrom->id, CDIOCRESUME, 0));
383	}
384
385	/* Stop play */
386	static int SDL_SYS_CDStop(SDL_CD *cdrom)
387	{
388	return(SDL_SYS_CDioctl(cdrom->id, CDIOCSTOP, 0));
389	}
390
391	/* Eject the CD-ROM */
392	static int SDL_SYS_CDEject(SDL_CD *cdrom)
393	{
394	SDL_SYS_CDioctl(cdrom->id, CDIOCALLOW, 0);
395	return(SDL_SYS_CDioctl(cdrom->id, CDIOCEJECT, 0));
396	}
397
398	/* Close the CD-ROM handle */
399	static void SDL_SYS_CDClose(SDL_CD *cdrom)
400	{
401	close(cdrom->id);
402	}
403
404	void SDL_SYS_CDQuit(void)
405	{
406	int i;
407
408	if ( SDL_numcds > 0 ) {
409	for ( i=0; i<SDL_numcds; ++i ) {
410	SDL_free(SDL_cdlist[i]);
411	}
412	SDL_numcds = 0;
413	}
414	}
415
416	#endif /* SDL_CDROM_OPENBSD */