[sdl_omap.git] / src / cdrom / freebsd / 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_FREEBSD

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

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

/* 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);
		}
	}
	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)
{
	/* checklist: /dev/cdrom,/dev/cd?c /dev/acd?c
			/dev/matcd?c /dev/mcd?c /dev/scd?c */
	static char *checklist[] = {
	"cdrom", "?0 cd?", "?0 acd?", "?0 matcd?", "?0 mcd?", "?0 scd?",NULL
	};
	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/%sc", &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.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
	playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
#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)
{
	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_FREEBSD */
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_FREEBSD
	25
	26	/* Functions for system-level CD-ROM audio control */
	27
	28	#include <sys/types.h>
	29	#include <sys/stat.h>
	30	#include <fcntl.h>
	31	#include <errno.h>
	32	#include <unistd.h>
	33	#include <sys/cdio.h>
	34
	35	#include "SDL_cdrom.h"
	36	#include "../SDL_syscdrom.h"
	37
	38
	39	/* The maximum number of CD-ROM drives we'll detect */
	40	#define MAX_DRIVES 16
	41
	42	/* A list of available CD-ROM drives */
	43	static char *SDL_cdlist[MAX_DRIVES];
	44	static dev_t SDL_cdmode[MAX_DRIVES];
	45
	46	/* The system-dependent CD control functions */
	47	static const char *SDL_SYS_CDName(int drive);
	48	static int SDL_SYS_CDOpen(int drive);
	49	static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
	50	static CDstatus SDL_SYS_CDStatus(SDL_CD cdrom, int position);
	51	static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
	52	static int SDL_SYS_CDPause(SDL_CD *cdrom);
	53	static int SDL_SYS_CDResume(SDL_CD *cdrom);
	54	static int SDL_SYS_CDStop(SDL_CD *cdrom);
	55	static int SDL_SYS_CDEject(SDL_CD *cdrom);
	56	static void SDL_SYS_CDClose(SDL_CD *cdrom);
	57
	58	/* Some ioctl() errno values which occur when the tray is empty */
	59	#define ERRNO_TRAYEMPTY(errno) \
	60	((errno == EIO) \|\| (errno == ENOENT) \|\| (errno == EINVAL))
	61
	62	/* Check a drive to see if it is a CD-ROM */
	63	static int CheckDrive(char drive, struct stat stbuf)
	64	{
65	int is_cd, cdfd;
66	struct ioc_read_subchannel info;
67
68	/* If it doesn't exist, return -1 */
69	if ( stat(drive, stbuf) < 0 ) {
70	return(-1);
71	}
72
73	/* If it does exist, verify that it's an available CD-ROM */
74	is_cd = 0;
75	if ( S_ISCHR(stbuf->st_mode) \|\| S_ISBLK(stbuf->st_mode) ) {
76	cdfd = open(drive, (O_RDONLY\|O_EXCL\|O_NONBLOCK), 0);
77	if ( cdfd >= 0 ) {
78	info.address_format = CD_MSF_FORMAT;
79	info.data_format = CD_CURRENT_POSITION;
80	info.data_len = 0;
81	info.data = NULL;
82	/* Under Linux, EIO occurs when a disk is not present.
83	This isn't 100% reliable, so we use the USE_MNTENT
84	code above instead.
85	*/
86	if ( (ioctl(cdfd, CDIOCREADSUBCHANNEL, &info) == 0) \|\|
87	ERRNO_TRAYEMPTY(errno) ) {
88	is_cd = 1;
89	}
90	close(cdfd);
91	}
92	}
93	return(is_cd);
94	}
95
96	/* Add a CD-ROM drive to our list of valid drives */
97	static void AddDrive(char drive, struct stat stbuf)
98	{
99	int i;
100
101	if ( SDL_numcds < MAX_DRIVES ) {
102	/* Check to make sure it's not already in our list.
103	This can happen when we see a drive via symbolic link.
104	*/
105	for ( i=0; i<SDL_numcds; ++i ) {
106	if ( stbuf->st_rdev == SDL_cdmode[i] ) {
107	#ifdef DEBUG_CDROM
108	fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
109	#endif
110	return;
111	}
112	}
113
114	/* Add this drive to our list */
115	i = SDL_numcds;
116	SDL_cdlist[i] = SDL_strdup(drive);
117	if ( SDL_cdlist[i] == NULL ) {
118	SDL_OutOfMemory();
119	return;
120	}
121	SDL_cdmode[i] = stbuf->st_rdev;
122	++SDL_numcds;
123	#ifdef DEBUG_CDROM
124	fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
125	#endif
126	}
127	}
128
129	int SDL_SYS_CDInit(void)
130	{
131	/* checklist: /dev/cdrom,/dev/cd?c /dev/acd?c
132	/dev/matcd?c /dev/mcd?c /dev/scd?c */
133	static char *checklist[] = {
134	"cdrom", "?0 cd?", "?0 acd?", "?0 matcd?", "?0 mcd?", "?0 scd?",NULL
135	};
136	char *SDLcdrom;
137	int i, j, exists;
138	char drive[32];
139	struct stat stbuf;
140
141	/* Fill in our driver capabilities */
142	SDL_CDcaps.Name = SDL_SYS_CDName;
143	SDL_CDcaps.Open = SDL_SYS_CDOpen;
144	SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
145	SDL_CDcaps.Status = SDL_SYS_CDStatus;
146	SDL_CDcaps.Play = SDL_SYS_CDPlay;
147	SDL_CDcaps.Pause = SDL_SYS_CDPause;
148	SDL_CDcaps.Resume = SDL_SYS_CDResume;
149	SDL_CDcaps.Stop = SDL_SYS_CDStop;
150	SDL_CDcaps.Eject = SDL_SYS_CDEject;
151	SDL_CDcaps.Close = SDL_SYS_CDClose;
152
153	/* Look in the environment for our CD-ROM drive list */
154	SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */
155	if ( SDLcdrom != NULL ) {
156	char cdpath, delim;
157	size_t len = SDL_strlen(SDLcdrom)+1;
158	cdpath = SDL_stack_alloc(char, len);
159	if ( cdpath != NULL ) {
160	SDL_strlcpy(cdpath, SDLcdrom, len);
161	SDLcdrom = cdpath;
162	do {
163	delim = SDL_strchr(SDLcdrom, ':');
164	if ( delim ) {
165	*delim++ = '\0';
166	}
167	if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) {
168	AddDrive(SDLcdrom, &stbuf);
169	}
170	if ( delim ) {
171	SDLcdrom = delim;
172	} else {
173	SDLcdrom = NULL;
174	}
175	} while ( SDLcdrom );
176	SDL_stack_free(cdpath);
177	}
178
179	/* If we found our drives, there's nothing left to do */
180	if ( SDL_numcds > 0 ) {
181	return(0);
182	}
183	}
184
185	/* Scan the system for CD-ROM drives */
186	for ( i=0; checklist[i]; ++i ) {
187	if ( checklist[i][0] == '?' ) {
188	char *insert;
189	exists = 1;
190	for ( j=checklist[i][1]; exists; ++j ) {
191	SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%sc", &checklist[i][3]);
192	insert = SDL_strchr(drive, '?');
193	if ( insert != NULL ) {
194	*insert = j;
195	}
196	switch (CheckDrive(drive, &stbuf)) {
197	/* Drive exists and is a CD-ROM */
198	case 1:
199	AddDrive(drive, &stbuf);
200	break;
201	/* Drive exists, but isn't a CD-ROM */
202	case 0:
203	break;
204	/* Drive doesn't exist */
205	case -1:
206	exists = 0;
207	break;
208	}
209	}
210	} else {
211	SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]);
212	if ( CheckDrive(drive, &stbuf) > 0 ) {
213	AddDrive(drive, &stbuf);
214	}
215	}
216	}
217	return(0);
218	}
219
220	/* General ioctl() CD-ROM command function */
221	static int SDL_SYS_CDioctl(int id, int command, void *arg)
222	{
223	int retval;
224
225	retval = ioctl(id, command, arg);
226	if ( retval < 0 ) {
227	SDL_SetError("ioctl() error: %s", strerror(errno));
228	}
229	return(retval);
230	}
231
232	static const char *SDL_SYS_CDName(int drive)
233	{
234	return(SDL_cdlist[drive]);
235	}
236
237	static int SDL_SYS_CDOpen(int drive)
238	{
239	return(open(SDL_cdlist[drive], (O_RDONLY\|O_EXCL\|O_NONBLOCK), 0));
240	}
241
242	static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
243	{
244	struct ioc_toc_header toc;
245	int i, okay;
246	struct ioc_read_toc_entry entry;
247	struct cd_toc_entry data;
248
249	okay = 0;
250	if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCHEADER, &toc) == 0 ) {
251	cdrom->numtracks = toc.ending_track-toc.starting_track+1;
252	if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
253	cdrom->numtracks = SDL_MAX_TRACKS;
254	}
255	/* Read all the track TOC entries */
256	for ( i=0; i<=cdrom->numtracks; ++i ) {
257	if ( i == cdrom->numtracks ) {
258	cdrom->track[i].id = 0xAA; /* CDROM_LEADOUT */
259	} else {
260	cdrom->track[i].id = toc.starting_track+i;
261	}
262	entry.starting_track = cdrom->track[i].id;
263	entry.address_format = CD_MSF_FORMAT;
264	entry.data_len = sizeof(data);
265	entry.data = &data;
266	if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCENTRYS,
267	&entry) < 0 ) {
268	break;
269	} else {
270	cdrom->track[i].type = data.control;
271	cdrom->track[i].offset = MSF_TO_FRAMES(
272	data.addr.msf.minute,
273	data.addr.msf.second,
274	data.addr.msf.frame);
275	cdrom->track[i].length = 0;
276	if ( i > 0 ) {
277	cdrom->track[i-1].length =
278	cdrom->track[i].offset-
279	cdrom->track[i-1].offset;
280	}
281	}
282	}
283	if ( i == (cdrom->numtracks+1) ) {
284	okay = 1;
285	}
286	}
287	return(okay ? 0 : -1);
288	}
289
290	/* Get CD-ROM status */
291	static CDstatus SDL_SYS_CDStatus(SDL_CD cdrom, int position)
292	{
293	CDstatus status;
294	struct ioc_toc_header toc;
295	struct ioc_read_subchannel info;
296	struct cd_sub_channel_info data;
297
298	info.address_format = CD_MSF_FORMAT;
299	info.data_format = CD_CURRENT_POSITION;
300	info.track = 0;
301	info.data_len = sizeof(data);
302	info.data = &data;
303	if ( ioctl(cdrom->id, CDIOCREADSUBCHANNEL, &info) < 0 ) {
304	if ( ERRNO_TRAYEMPTY(errno) ) {
305	status = CD_TRAYEMPTY;
306	} else {
307	status = CD_ERROR;
308	}
309	} else {
310	switch (data.header.audio_status) {
311	case CD_AS_AUDIO_INVALID:
312	case CD_AS_NO_STATUS:
313	/* Try to determine if there's a CD available */
314	if (ioctl(cdrom->id,CDIOREADTOCHEADER,&toc)==0)
315	status = CD_STOPPED;
316	else
317	status = CD_TRAYEMPTY;
318	break;
319	case CD_AS_PLAY_COMPLETED:
320	status = CD_STOPPED;
321	break;
322	case CD_AS_PLAY_IN_PROGRESS:
323	status = CD_PLAYING;
324	break;
325	case CD_AS_PLAY_PAUSED:
326	status = CD_PAUSED;
327	break;
328	default:
329	status = CD_ERROR;
330	break;
331	}
332	}
333	if ( position ) {
334	if ( status == CD_PLAYING \|\| (status == CD_PAUSED) ) {
335	*position = MSF_TO_FRAMES(
336	data.what.position.absaddr.msf.minute,
337	data.what.position.absaddr.msf.second,
338	data.what.position.absaddr.msf.frame);
339	} else {
340	*position = 0;
341	}
342	}
343	return(status);
344	}
345
346	/* Start play */
347	static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
348	{
349	struct ioc_play_msf playtime;
350
351	FRAMES_TO_MSF(start,
352	&playtime.start_m, &playtime.start_s, &playtime.start_f);
353	FRAMES_TO_MSF(start+length,
354	&playtime.end_m, &playtime.end_s, &playtime.end_f);
355	#ifdef DEBUG_CDROM
356	fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
357	playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
358	playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
359	#endif
360	ioctl(cdrom->id, CDIOCSTART, 0);
361	return(SDL_SYS_CDioctl(cdrom->id, CDIOCPLAYMSF, &playtime));
362	}
363
364	/* Pause play */
365	static int SDL_SYS_CDPause(SDL_CD *cdrom)
366	{
367	return(SDL_SYS_CDioctl(cdrom->id, CDIOCPAUSE, 0));
368	}
369
370	/* Resume play */
371	static int SDL_SYS_CDResume(SDL_CD *cdrom)
372	{
373	return(SDL_SYS_CDioctl(cdrom->id, CDIOCRESUME, 0));
374	}
375
376	/* Stop play */
377	static int SDL_SYS_CDStop(SDL_CD *cdrom)
378	{
379	return(SDL_SYS_CDioctl(cdrom->id, CDIOCSTOP, 0));
380	}
381
382	/* Eject the CD-ROM */
383	static int SDL_SYS_CDEject(SDL_CD *cdrom)
384	{
385	return(SDL_SYS_CDioctl(cdrom->id, CDIOCEJECT, 0));
386	}
387
388	/* Close the CD-ROM handle */
389	static void SDL_SYS_CDClose(SDL_CD *cdrom)
390	{
391	close(cdrom->id);
392	}
393
394	void SDL_SYS_CDQuit(void)
395	{
396	int i;
397
398	if ( SDL_numcds > 0 ) {
399	for ( i=0; i<SDL_numcds; ++i ) {
400	SDL_free(SDL_cdlist[i]);
401	}
402	SDL_numcds = 0;
403	}
404	}
405
406	#endif /* SDL_CDROM_FREEBSD */