Mercurial > sdl-ios-xcode
annotate src/cdrom/linux/SDL_syscdrom.c @ 4347:38f22ed3a433 SDL-1.2
Option to fix bug #851
For some people setting the period size works better (and is what SDL 1.2.13 did), but for most people it's the same or worse. You can use an environment variable to pick which one you want.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 17 Oct 2009 06:55:17 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
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24 #ifdef SDL_CDROM_LINUX |
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25 |
| 0 | 26 /* Functions for system-level CD-ROM audio control */ |
| 27 | |
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28 #include <string.h> /* For strerror() */ |
| 0 | 29 #include <sys/types.h> |
| 30 #include <sys/stat.h> | |
| 31 #include <sys/ioctl.h> | |
| 32 #include <fcntl.h> | |
| 33 #include <errno.h> | |
| 34 #include <unistd.h> | |
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35 #ifdef __LINUX__ |
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36 #ifdef HAVE_LINUX_VERSION_H |
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37 /* linux 2.6.9 workaround */ |
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38 #include <linux/version.h> |
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39 #if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,9) |
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40 #include <asm/types.h> |
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41 #define __le64 __u64 |
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42 #define __le32 __u32 |
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43 #define __le16 __u16 |
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44 #define __be64 __u64 |
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45 #define __be32 __u32 |
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46 #define __be16 __u16 |
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47 #endif /* linux 2.6.9 workaround */ |
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48 #endif /* HAVE_LINUX_VERSION_H */ |
| 0 | 49 #include <linux/cdrom.h> |
| 50 #endif | |
| 51 #ifdef __SVR4 | |
| 52 #include <sys/cdio.h> | |
| 53 #endif | |
| 54 | |
| 55 /* Define this to use the alternative getmntent() code */ | |
| 56 #ifndef __SVR4 | |
| 57 #define USE_MNTENT | |
| 58 #endif | |
| 59 | |
| 60 #ifdef USE_MNTENT | |
| 61 #if defined(__USLC__) | |
| 62 #include <sys/mntent.h> | |
| 63 #else | |
| 64 #include <mntent.h> | |
| 65 #endif | |
| 66 | |
| 67 #ifndef _PATH_MNTTAB | |
| 68 #ifdef MNTTAB | |
| 69 #define _PATH_MNTTAB MNTTAB | |
| 70 #else | |
| 71 #define _PATH_MNTTAB "/etc/fstab" | |
| 72 #endif | |
| 73 #endif /* !_PATH_MNTTAB */ | |
| 74 | |
| 75 #ifndef _PATH_MOUNTED | |
| 76 #define _PATH_MOUNTED "/etc/mtab" | |
| 77 #endif /* !_PATH_MOUNTED */ | |
| 78 | |
| 79 #ifndef MNTTYPE_CDROM | |
| 80 #define MNTTYPE_CDROM "iso9660" | |
| 81 #endif | |
| 82 #ifndef MNTTYPE_SUPER | |
| 83 #define MNTTYPE_SUPER "supermount" | |
| 84 #endif | |
| 85 #endif /* USE_MNTENT */ | |
| 86 | |
| 87 #include "SDL_cdrom.h" | |
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88 #include "../SDL_syscdrom.h" |
| 0 | 89 |
| 90 | |
| 91 /* The maximum number of CD-ROM drives we'll detect */ | |
| 92 #define MAX_DRIVES 16 | |
| 93 | |
| 94 /* A list of available CD-ROM drives */ | |
| 95 static char *SDL_cdlist[MAX_DRIVES]; | |
| 96 static dev_t SDL_cdmode[MAX_DRIVES]; | |
| 97 | |
| 98 /* The system-dependent CD control functions */ | |
| 99 static const char *SDL_SYS_CDName(int drive); | |
| 100 static int SDL_SYS_CDOpen(int drive); | |
| 101 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 102 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 103 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 104 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 105 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 106 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 107 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 108 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 109 | |
| 110 /* Some ioctl() errno values which occur when the tray is empty */ | |
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111 #ifndef ENOMEDIUM |
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112 #define ENOMEDIUM ENOENT |
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113 #endif |
| 0 | 114 #define ERRNO_TRAYEMPTY(errno) \ |
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115 ((errno == EIO) || (errno == ENOENT) || \ |
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116 (errno == EINVAL) || (errno == ENOMEDIUM)) |
| 0 | 117 |
| 118 /* Check a drive to see if it is a CD-ROM */ | |
| 119 static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf) | |
| 120 { | |
| 121 int is_cd, cdfd; | |
| 122 struct cdrom_subchnl info; | |
| 123 | |
| 124 /* If it doesn't exist, return -1 */ | |
| 125 if ( stat(drive, stbuf) < 0 ) { | |
| 126 return(-1); | |
| 127 } | |
| 128 | |
| 129 /* If it does exist, verify that it's an available CD-ROM */ | |
| 130 is_cd = 0; | |
| 131 if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) { | |
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132 cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0); |
| 0 | 133 if ( cdfd >= 0 ) { |
| 134 info.cdsc_format = CDROM_MSF; | |
| 135 /* Under Linux, EIO occurs when a disk is not present. | |
| 136 */ | |
| 137 if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) || | |
| 138 ERRNO_TRAYEMPTY(errno) ) { | |
| 139 is_cd = 1; | |
| 140 } | |
| 141 close(cdfd); | |
| 142 } | |
| 143 #ifdef USE_MNTENT | |
| 144 /* Even if we can't read it, it might be mounted */ | |
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145 else if ( mnttype && (SDL_strcmp(mnttype, MNTTYPE_CDROM) == 0) ) { |
| 0 | 146 is_cd = 1; |
| 147 } | |
| 148 #endif | |
| 149 } | |
| 150 return(is_cd); | |
| 151 } | |
| 152 | |
| 153 /* Add a CD-ROM drive to our list of valid drives */ | |
| 154 static void AddDrive(char *drive, struct stat *stbuf) | |
| 155 { | |
| 156 int i; | |
| 157 | |
| 158 if ( SDL_numcds < MAX_DRIVES ) { | |
| 159 /* Check to make sure it's not already in our list. | |
| 160 This can happen when we see a drive via symbolic link. | |
| 161 */ | |
| 162 for ( i=0; i<SDL_numcds; ++i ) { | |
| 163 if ( stbuf->st_rdev == SDL_cdmode[i] ) { | |
| 164 #ifdef DEBUG_CDROM | |
| 165 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); | |
| 166 #endif | |
| 167 return; | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 /* Add this drive to our list */ | |
| 172 i = SDL_numcds; | |
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173 SDL_cdlist[i] = SDL_strdup(drive); |
| 0 | 174 if ( SDL_cdlist[i] == NULL ) { |
| 175 SDL_OutOfMemory(); | |
| 176 return; | |
| 177 } | |
| 178 SDL_cdmode[i] = stbuf->st_rdev; | |
| 179 ++SDL_numcds; | |
| 180 #ifdef DEBUG_CDROM | |
| 181 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); | |
| 182 #endif | |
| 183 } | |
| 184 } | |
| 185 | |
| 186 #ifdef USE_MNTENT | |
| 187 static void CheckMounts(const char *mtab) | |
| 188 { | |
| 189 FILE *mntfp; | |
| 190 struct mntent *mntent; | |
| 191 struct stat stbuf; | |
| 192 | |
| 193 mntfp = setmntent(mtab, "r"); | |
| 194 if ( mntfp != NULL ) { | |
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195 char *tmp; |
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196 char *mnt_type; |
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197 size_t mnt_type_len; |
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198 char *mnt_dev; |
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199 size_t mnt_dev_len; |
| 0 | 200 |
| 201 while ( (mntent=getmntent(mntfp)) != NULL ) { | |
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202 mnt_type_len = SDL_strlen(mntent->mnt_type) + 1; |
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203 mnt_type = SDL_stack_alloc(char, mnt_type_len); |
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204 if (mnt_type == NULL) |
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205 continue; /* maybe you'll get lucky next time. */ |
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206 |
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207 mnt_dev_len = SDL_strlen(mntent->mnt_fsname) + 1; |
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208 mnt_dev = SDL_stack_alloc(char, mnt_dev_len); |
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209 if (mnt_dev == NULL) { |
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210 SDL_stack_free(mnt_type); |
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211 continue; |
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212 } |
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213 |
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214 SDL_strlcpy(mnt_type, mntent->mnt_type, mnt_type_len); |
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215 SDL_strlcpy(mnt_dev, mntent->mnt_fsname, mnt_dev_len); |
| 0 | 216 |
| 217 /* Handle "supermount" filesystem mounts */ | |
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218 if ( SDL_strcmp(mnt_type, MNTTYPE_SUPER) == 0 ) { |
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219 tmp = SDL_strstr(mntent->mnt_opts, "fs="); |
| 0 | 220 if ( tmp ) { |
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221 SDL_stack_free(mnt_type); |
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222 mnt_type = SDL_strdup(tmp + SDL_strlen("fs=")); |
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223 if ( mnt_type ) { |
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224 tmp = SDL_strchr(mnt_type, ','); |
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225 if ( tmp ) { |
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226 *tmp = '\0'; |
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227 } |
| 0 | 228 } |
| 229 } | |
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230 tmp = SDL_strstr(mntent->mnt_opts, "dev="); |
| 0 | 231 if ( tmp ) { |
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232 SDL_stack_free(mnt_dev); |
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233 mnt_dev = SDL_strdup(tmp + SDL_strlen("dev=")); |
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234 if ( mnt_dev ) { |
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235 tmp = SDL_strchr(mnt_dev, ','); |
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236 if ( tmp ) { |
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237 *tmp = '\0'; |
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238 } |
| 0 | 239 } |
| 240 } | |
| 241 } | |
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242 if ( SDL_strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) { |
| 0 | 243 #ifdef DEBUG_CDROM |
| 244 fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n", | |
| 245 mtab, mnt_dev, mntent->mnt_dir, mnt_type); | |
| 246 #endif | |
| 247 if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) { | |
| 248 AddDrive(mnt_dev, &stbuf); | |
| 249 } | |
| 250 } | |
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251 SDL_stack_free(mnt_dev); |
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252 SDL_stack_free(mnt_type); |
| 0 | 253 } |
| 254 endmntent(mntfp); | |
| 255 } | |
| 256 } | |
| 257 #endif /* USE_MNTENT */ | |
| 258 | |
| 259 int SDL_SYS_CDInit(void) | |
| 260 { | |
| 261 /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */ | |
| 262 static char *checklist[] = { | |
| 263 "cdrom", "?a hd?", "?0 scd?", "?0 sr?", NULL | |
| 264 }; | |
| 265 char *SDLcdrom; | |
| 266 int i, j, exists; | |
| 267 char drive[32]; | |
| 268 struct stat stbuf; | |
| 269 | |
| 270 /* Fill in our driver capabilities */ | |
| 271 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 272 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 273 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 274 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 275 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 276 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 277 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 278 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 279 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 280 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 281 | |
| 282 /* Look in the environment for our CD-ROM drive list */ | |
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283 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ |
| 0 | 284 if ( SDLcdrom != NULL ) { |
| 285 char *cdpath, *delim; | |
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286 size_t len = SDL_strlen(SDLcdrom)+1; |
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287 cdpath = SDL_stack_alloc(char, len); |
| 0 | 288 if ( cdpath != NULL ) { |
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289 SDL_strlcpy(cdpath, SDLcdrom, len); |
| 0 | 290 SDLcdrom = cdpath; |
| 291 do { | |
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292 delim = SDL_strchr(SDLcdrom, ':'); |
| 0 | 293 if ( delim ) { |
| 294 *delim++ = '\0'; | |
| 295 } | |
| 296 #ifdef DEBUG_CDROM | |
| 297 fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom); | |
| 298 #endif | |
| 299 if ( CheckDrive(SDLcdrom, NULL, &stbuf) > 0 ) { | |
| 300 AddDrive(SDLcdrom, &stbuf); | |
| 301 } | |
| 302 if ( delim ) { | |
| 303 SDLcdrom = delim; | |
| 304 } else { | |
| 305 SDLcdrom = NULL; | |
| 306 } | |
| 307 } while ( SDLcdrom ); | |
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308 SDL_stack_free(cdpath); |
| 0 | 309 } |
| 310 | |
| 311 /* If we found our drives, there's nothing left to do */ | |
| 312 if ( SDL_numcds > 0 ) { | |
| 313 return(0); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 #ifdef USE_MNTENT | |
| 318 /* Check /dev/cdrom first :-) */ | |
| 319 if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) { | |
| 320 AddDrive("/dev/cdrom", &stbuf); | |
| 321 } | |
| 322 | |
| 323 /* Now check the currently mounted CD drives */ | |
| 324 CheckMounts(_PATH_MOUNTED); | |
| 325 | |
| 326 /* Finally check possible mountable drives in /etc/fstab */ | |
| 327 CheckMounts(_PATH_MNTTAB); | |
| 328 | |
| 329 /* If we found our drives, there's nothing left to do */ | |
| 330 if ( SDL_numcds > 0 ) { | |
| 331 return(0); | |
| 332 } | |
| 333 #endif /* USE_MNTENT */ | |
| 334 | |
| 335 /* Scan the system for CD-ROM drives. | |
| 336 Not always 100% reliable, so use the USE_MNTENT code above first. | |
| 337 */ | |
| 338 for ( i=0; checklist[i]; ++i ) { | |
| 339 if ( checklist[i][0] == '?' ) { | |
| 340 char *insert; | |
| 341 exists = 1; | |
| 342 for ( j=checklist[i][1]; exists; ++j ) { | |
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343 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", &checklist[i][3]); |
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344 insert = SDL_strchr(drive, '?'); |
| 0 | 345 if ( insert != NULL ) { |
| 346 *insert = j; | |
| 347 } | |
| 348 #ifdef DEBUG_CDROM | |
| 349 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); | |
| 350 #endif | |
| 351 switch (CheckDrive(drive, NULL, &stbuf)) { | |
| 352 /* Drive exists and is a CD-ROM */ | |
| 353 case 1: | |
| 354 AddDrive(drive, &stbuf); | |
| 355 break; | |
| 356 /* Drive exists, but isn't a CD-ROM */ | |
| 357 case 0: | |
| 358 break; | |
| 359 /* Drive doesn't exist */ | |
| 360 case -1: | |
| 361 exists = 0; | |
| 362 break; | |
| 363 } | |
| 364 } | |
| 365 } else { | |
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366 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]); |
| 0 | 367 #ifdef DEBUG_CDROM |
| 368 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); | |
| 369 #endif | |
| 370 if ( CheckDrive(drive, NULL, &stbuf) > 0 ) { | |
| 371 AddDrive(drive, &stbuf); | |
| 372 } | |
| 373 } | |
| 374 } | |
| 375 return(0); | |
| 376 } | |
| 377 | |
| 378 /* General ioctl() CD-ROM command function */ | |
| 379 static int SDL_SYS_CDioctl(int id, int command, void *arg) | |
| 380 { | |
| 381 int retval; | |
| 382 | |
| 383 retval = ioctl(id, command, arg); | |
| 384 if ( retval < 0 ) { | |
| 385 SDL_SetError("ioctl() error: %s", strerror(errno)); | |
| 386 } | |
| 387 return(retval); | |
| 388 } | |
| 389 | |
| 390 static const char *SDL_SYS_CDName(int drive) | |
| 391 { | |
| 392 return(SDL_cdlist[drive]); | |
| 393 } | |
| 394 | |
| 395 static int SDL_SYS_CDOpen(int drive) | |
| 396 { | |
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397 return(open(SDL_cdlist[drive], (O_RDONLY|O_NONBLOCK), 0)); |
| 0 | 398 } |
| 399 | |
| 400 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
| 401 { | |
| 402 struct cdrom_tochdr toc; | |
| 403 int i, okay; | |
| 404 struct cdrom_tocentry entry; | |
| 405 | |
| 406 okay = 0; | |
| 407 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) { | |
| 408 cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1; | |
| 409 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | |
| 410 cdrom->numtracks = SDL_MAX_TRACKS; | |
| 411 } | |
| 412 /* Read all the track TOC entries */ | |
| 413 for ( i=0; i<=cdrom->numtracks; ++i ) { | |
| 414 if ( i == cdrom->numtracks ) { | |
| 415 cdrom->track[i].id = CDROM_LEADOUT; | |
| 416 } else { | |
| 417 cdrom->track[i].id = toc.cdth_trk0+i; | |
| 418 } | |
| 419 entry.cdte_track = cdrom->track[i].id; | |
| 420 entry.cdte_format = CDROM_MSF; | |
| 421 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY, | |
| 422 &entry) < 0 ) { | |
| 423 break; | |
| 424 } else { | |
| 425 if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) { | |
| 426 cdrom->track[i].type = SDL_DATA_TRACK; | |
| 427 } else { | |
| 428 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
| 429 } | |
| 430 cdrom->track[i].offset = MSF_TO_FRAMES( | |
| 431 entry.cdte_addr.msf.minute, | |
| 432 entry.cdte_addr.msf.second, | |
| 433 entry.cdte_addr.msf.frame); | |
| 434 cdrom->track[i].length = 0; | |
| 435 if ( i > 0 ) { | |
| 436 cdrom->track[i-1].length = | |
| 437 cdrom->track[i].offset- | |
| 438 cdrom->track[i-1].offset; | |
| 439 } | |
| 440 } | |
| 441 } | |
| 442 if ( i == (cdrom->numtracks+1) ) { | |
| 443 okay = 1; | |
| 444 } | |
| 445 } | |
| 446 return(okay ? 0 : -1); | |
| 447 } | |
| 448 | |
| 449 /* Get CD-ROM status */ | |
| 450 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 451 { | |
| 452 CDstatus status; | |
| 453 struct cdrom_tochdr toc; | |
| 454 struct cdrom_subchnl info; | |
| 455 | |
| 456 info.cdsc_format = CDROM_MSF; | |
| 457 if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) { | |
| 458 if ( ERRNO_TRAYEMPTY(errno) ) { | |
| 459 status = CD_TRAYEMPTY; | |
| 460 } else { | |
| 461 status = CD_ERROR; | |
| 462 } | |
| 463 } else { | |
| 464 switch (info.cdsc_audiostatus) { | |
| 465 case CDROM_AUDIO_INVALID: | |
| 466 case CDROM_AUDIO_NO_STATUS: | |
| 467 /* Try to determine if there's a CD available */ | |
| 468 if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0) | |
| 469 status = CD_STOPPED; | |
| 470 else | |
| 471 status = CD_TRAYEMPTY; | |
| 472 break; | |
| 473 case CDROM_AUDIO_COMPLETED: | |
| 474 status = CD_STOPPED; | |
| 475 break; | |
| 476 case CDROM_AUDIO_PLAY: | |
| 477 status = CD_PLAYING; | |
| 478 break; | |
| 479 case CDROM_AUDIO_PAUSED: | |
| 480 /* Workaround buggy CD-ROM drive */ | |
| 481 if ( info.cdsc_trk == CDROM_LEADOUT ) { | |
| 482 status = CD_STOPPED; | |
| 483 } else { | |
| 484 status = CD_PAUSED; | |
| 485 } | |
| 486 break; | |
| 487 default: | |
| 488 status = CD_ERROR; | |
| 489 break; | |
| 490 } | |
| 491 } | |
| 492 if ( position ) { | |
| 493 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
| 494 *position = MSF_TO_FRAMES( | |
| 495 info.cdsc_absaddr.msf.minute, | |
| 496 info.cdsc_absaddr.msf.second, | |
| 497 info.cdsc_absaddr.msf.frame); | |
| 498 } else { | |
| 499 *position = 0; | |
| 500 } | |
| 501 } | |
| 502 return(status); | |
| 503 } | |
| 504 | |
| 505 /* Start play */ | |
| 506 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 507 { | |
| 508 struct cdrom_msf playtime; | |
| 509 | |
| 510 FRAMES_TO_MSF(start, | |
| 511 &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); | |
| 512 FRAMES_TO_MSF(start+length, | |
| 513 &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); | |
| 514 #ifdef DEBUG_CDROM | |
| 515 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", | |
| 516 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, | |
| 517 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); | |
| 518 #endif | |
| 519 return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime)); | |
| 520 } | |
| 521 | |
| 522 /* Pause play */ | |
| 523 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 524 { | |
| 525 return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0)); | |
| 526 } | |
| 527 | |
| 528 /* Resume play */ | |
| 529 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 530 { | |
| 531 return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0)); | |
| 532 } | |
| 533 | |
| 534 /* Stop play */ | |
| 535 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 536 { | |
| 537 return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0)); | |
| 538 } | |
| 539 | |
| 540 /* Eject the CD-ROM */ | |
| 541 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 542 { | |
| 543 return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0)); | |
| 544 } | |
| 545 | |
| 546 /* Close the CD-ROM handle */ | |
| 547 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 548 { | |
| 549 close(cdrom->id); | |
| 550 } | |
| 551 | |
| 552 void SDL_SYS_CDQuit(void) | |
| 553 { | |
| 554 int i; | |
| 555 | |
| 556 if ( SDL_numcds > 0 ) { | |
| 557 for ( i=0; i<SDL_numcds; ++i ) { | |
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558 SDL_free(SDL_cdlist[i]); |
| 0 | 559 } |
| 560 SDL_numcds = 0; | |
| 561 } | |
| 562 } | |
| 563 | |
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564 #endif /* SDL_CDROM_LINUX */ |