annotate src/cdrom/linux/SDL_syscdrom.c @ 297:f6ffac90895c

Updated copyright information for 2002
author Sam Lantinga <slouken@libsdl.org>
date Wed, 06 Mar 2002 11:23:08 +0000
parents e8157fcb3114
children 11d6eed68dba
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Functions for system-level CD-ROM audio control */
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29
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30 #include <sys/types.h>
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31 #include <stdlib.h>
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32 #include <sys/stat.h>
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33 #include <sys/ioctl.h>
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34 #include <fcntl.h>
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35 #include <stdio.h>
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36 #include <string.h>
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37 #include <errno.h>
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38 #include <unistd.h>
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39 #ifdef __linux__
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40 #include <linux/cdrom.h>
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41 #endif
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42 #ifdef __SVR4
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43 #include <sys/cdio.h>
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44 #endif
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45
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46 /* Define this to use the alternative getmntent() code */
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47 #ifndef __SVR4
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48 #define USE_MNTENT
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49 #endif
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50
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51 #ifdef USE_MNTENT
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52 #if defined(__USLC__)
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53 #include <sys/mntent.h>
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54 #else
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55 #include <mntent.h>
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56 #endif
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57
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58 #ifndef _PATH_MNTTAB
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59 #ifdef MNTTAB
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60 #define _PATH_MNTTAB MNTTAB
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61 #else
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62 #define _PATH_MNTTAB "/etc/fstab"
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63 #endif
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64 #endif /* !_PATH_MNTTAB */
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65
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66 #ifndef _PATH_MOUNTED
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67 #define _PATH_MOUNTED "/etc/mtab"
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68 #endif /* !_PATH_MOUNTED */
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69
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70 #ifndef MNTTYPE_CDROM
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71 #define MNTTYPE_CDROM "iso9660"
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72 #endif
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73 #ifndef MNTTYPE_SUPER
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74 #define MNTTYPE_SUPER "supermount"
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75 #endif
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76 #endif /* USE_MNTENT */
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77
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78 #include "SDL_error.h"
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79 #include "SDL_cdrom.h"
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80 #include "SDL_syscdrom.h"
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81
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82
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83 /* The maximum number of CD-ROM drives we'll detect */
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84 #define MAX_DRIVES 16
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85
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86 /* A list of available CD-ROM drives */
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87 static char *SDL_cdlist[MAX_DRIVES];
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88 static dev_t SDL_cdmode[MAX_DRIVES];
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89
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90 /* The system-dependent CD control functions */
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91 static const char *SDL_SYS_CDName(int drive);
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92 static int SDL_SYS_CDOpen(int drive);
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93 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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94 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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95 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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96 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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97 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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98 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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99 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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100 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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101
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102 /* Some ioctl() errno values which occur when the tray is empty */
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103 #define ERRNO_TRAYEMPTY(errno) \
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104 ((errno == EIO) || (errno == ENOENT) || (errno == EINVAL))
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105
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106 /* Check a drive to see if it is a CD-ROM */
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107 static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf)
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108 {
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109 int is_cd, cdfd;
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110 struct cdrom_subchnl info;
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111
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112 /* If it doesn't exist, return -1 */
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113 if ( stat(drive, stbuf) < 0 ) {
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114 return(-1);
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115 }
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116
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117 /* If it does exist, verify that it's an available CD-ROM */
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118 is_cd = 0;
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119 if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) {
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120 cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0);
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121 if ( cdfd >= 0 ) {
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122 info.cdsc_format = CDROM_MSF;
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123 /* Under Linux, EIO occurs when a disk is not present.
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124 */
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125 if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) ||
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126 ERRNO_TRAYEMPTY(errno) ) {
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127 is_cd = 1;
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128 }
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129 close(cdfd);
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130 }
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131 #ifdef USE_MNTENT
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132 /* Even if we can't read it, it might be mounted */
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133 else if ( mnttype && (strcmp(mnttype, MNTTYPE_CDROM) == 0) ) {
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134 is_cd = 1;
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135 }
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136 #endif
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137 }
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138 return(is_cd);
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139 }
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140
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141 /* Add a CD-ROM drive to our list of valid drives */
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142 static void AddDrive(char *drive, struct stat *stbuf)
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143 {
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144 int i;
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145
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146 if ( SDL_numcds < MAX_DRIVES ) {
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147 /* Check to make sure it's not already in our list.
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148 This can happen when we see a drive via symbolic link.
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149 */
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150 for ( i=0; i<SDL_numcds; ++i ) {
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151 if ( stbuf->st_rdev == SDL_cdmode[i] ) {
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152 #ifdef DEBUG_CDROM
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153 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
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154 #endif
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155 return;
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156 }
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157 }
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158
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159 /* Add this drive to our list */
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160 i = SDL_numcds;
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161 SDL_cdlist[i] = (char *)malloc(strlen(drive)+1);
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162 if ( SDL_cdlist[i] == NULL ) {
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163 SDL_OutOfMemory();
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164 return;
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165 }
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166 strcpy(SDL_cdlist[i], drive);
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167 SDL_cdmode[i] = stbuf->st_rdev;
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168 ++SDL_numcds;
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169 #ifdef DEBUG_CDROM
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170 fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
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171 #endif
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172 }
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173 }
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174
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175 #ifdef USE_MNTENT
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176 static void CheckMounts(const char *mtab)
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177 {
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178 FILE *mntfp;
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179 struct mntent *mntent;
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180 struct stat stbuf;
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181
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182 mntfp = setmntent(mtab, "r");
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183 if ( mntfp != NULL ) {
139
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184 char *tmp;
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185 char *mnt_type;
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186 char *mnt_dev;
0
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187
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188 while ( (mntent=getmntent(mntfp)) != NULL ) {
139
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189 mnt_type = malloc(strlen(mntent->mnt_type) + 1);
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190 if (mnt_type == NULL)
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191 continue; /* maybe you'll get lucky next time. */
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192
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193 mnt_dev = malloc(strlen(mntent->mnt_fsname) + 1);
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194 if (mnt_dev == NULL) {
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195 free(mnt_type);
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196 continue;
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197 }
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198
0
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199 strcpy(mnt_type, mntent->mnt_type);
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200 strcpy(mnt_dev, mntent->mnt_fsname);
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201
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202 /* Handle "supermount" filesystem mounts */
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203 if ( strcmp(mnt_type, MNTTYPE_SUPER) == 0 ) {
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204 tmp = strstr(mntent->mnt_opts, "fs=");
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205 if ( tmp ) {
247
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206 free(mnt_type);
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207 mnt_type = strdup(tmp + strlen("fs="));
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208 if ( mnt_type ) {
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209 tmp = strchr(mnt_type, ',');
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210 if ( tmp ) {
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211 *tmp = '\0';
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212 }
0
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213 }
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214 }
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215 tmp = strstr(mntent->mnt_opts, "dev=");
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216 if ( tmp ) {
247
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diff changeset
217 free(mnt_dev);
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218 mnt_dev = strdup(tmp + strlen("dev="));
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parents: 139
diff changeset
219 if ( mnt_dev ) {
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diff changeset
220 tmp = strchr(mnt_dev, ',');
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parents: 139
diff changeset
221 if ( tmp ) {
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diff changeset
222 *tmp = '\0';
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diff changeset
223 }
0
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224 }
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225 }
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226 }
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diff changeset
227 if ( strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) {
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228 #ifdef DEBUG_CDROM
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229 fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n",
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230 mtab, mnt_dev, mntent->mnt_dir, mnt_type);
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diff changeset
231 #endif
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232 if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) {
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233 AddDrive(mnt_dev, &stbuf);
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234 }
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235 }
139
ef23a1bf1244 Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
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diff changeset
236 free(mnt_dev);
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diff changeset
237 free(mnt_type);
0
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diff changeset
238 }
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diff changeset
239 endmntent(mntfp);
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240 }
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241 }
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diff changeset
242 #endif /* USE_MNTENT */
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243
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244 int SDL_SYS_CDInit(void)
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diff changeset
245 {
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parents:
diff changeset
246 /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */
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247 static char *checklist[] = {
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248 "cdrom", "?a hd?", "?0 scd?", "?0 sr?", NULL
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249 };
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250 char *SDLcdrom;
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diff changeset
251 int i, j, exists;
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diff changeset
252 char drive[32];
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253 struct stat stbuf;
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diff changeset
254
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diff changeset
255 /* Fill in our driver capabilities */
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diff changeset
256 SDL_CDcaps.Name = SDL_SYS_CDName;
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257 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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diff changeset
258 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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diff changeset
259 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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diff changeset
260 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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diff changeset
261 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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diff changeset
262 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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diff changeset
263 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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diff changeset
264 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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265 SDL_CDcaps.Close = SDL_SYS_CDClose;
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diff changeset
266
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parents:
diff changeset
267 /* Look in the environment for our CD-ROM drive list */
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diff changeset
268 SDLcdrom = getenv("SDL_CDROM"); /* ':' separated list of devices */
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diff changeset
269 if ( SDLcdrom != NULL ) {
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diff changeset
270 char *cdpath, *delim;
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diff changeset
271 cdpath = malloc(strlen(SDLcdrom)+1);
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parents:
diff changeset
272 if ( cdpath != NULL ) {
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diff changeset
273 strcpy(cdpath, SDLcdrom);
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parents:
diff changeset
274 SDLcdrom = cdpath;
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parents:
diff changeset
275 do {
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diff changeset
276 delim = strchr(SDLcdrom, ':');
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parents:
diff changeset
277 if ( delim ) {
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parents:
diff changeset
278 *delim++ = '\0';
74212992fb08 Initial revision
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parents:
diff changeset
279 }
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diff changeset
280 #ifdef DEBUG_CDROM
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diff changeset
281 fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom);
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parents:
diff changeset
282 #endif
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diff changeset
283 if ( CheckDrive(SDLcdrom, NULL, &stbuf) > 0 ) {
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diff changeset
284 AddDrive(SDLcdrom, &stbuf);
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parents:
diff changeset
285 }
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parents:
diff changeset
286 if ( delim ) {
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parents:
diff changeset
287 SDLcdrom = delim;
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parents:
diff changeset
288 } else {
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diff changeset
289 SDLcdrom = NULL;
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parents:
diff changeset
290 }
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parents:
diff changeset
291 } while ( SDLcdrom );
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parents:
diff changeset
292 free(cdpath);
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parents:
diff changeset
293 }
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diff changeset
294
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parents:
diff changeset
295 /* If we found our drives, there's nothing left to do */
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parents:
diff changeset
296 if ( SDL_numcds > 0 ) {
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parents:
diff changeset
297 return(0);
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parents:
diff changeset
298 }
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parents:
diff changeset
299 }
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parents:
diff changeset
300
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parents:
diff changeset
301 #ifdef USE_MNTENT
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parents:
diff changeset
302 /* Check /dev/cdrom first :-) */
74212992fb08 Initial revision
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parents:
diff changeset
303 if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) {
74212992fb08 Initial revision
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parents:
diff changeset
304 AddDrive("/dev/cdrom", &stbuf);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 }
74212992fb08 Initial revision
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parents:
diff changeset
306
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parents:
diff changeset
307 /* Now check the currently mounted CD drives */
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parents:
diff changeset
308 CheckMounts(_PATH_MOUNTED);
74212992fb08 Initial revision
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parents:
diff changeset
309
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parents:
diff changeset
310 /* Finally check possible mountable drives in /etc/fstab */
74212992fb08 Initial revision
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parents:
diff changeset
311 CheckMounts(_PATH_MNTTAB);
74212992fb08 Initial revision
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parents:
diff changeset
312
74212992fb08 Initial revision
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parents:
diff changeset
313 /* If we found our drives, there's nothing left to do */
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parents:
diff changeset
314 if ( SDL_numcds > 0 ) {
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parents:
diff changeset
315 return(0);
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parents:
diff changeset
316 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 #endif /* USE_MNTENT */
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parents:
diff changeset
318
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parents:
diff changeset
319 /* Scan the system for CD-ROM drives.
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parents:
diff changeset
320 Not always 100% reliable, so use the USE_MNTENT code above first.
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parents:
diff changeset
321 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 for ( i=0; checklist[i]; ++i ) {
74212992fb08 Initial revision
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parents:
diff changeset
323 if ( checklist[i][0] == '?' ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 char *insert;
74212992fb08 Initial revision
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parents:
diff changeset
325 exists = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 for ( j=checklist[i][1]; exists; ++j ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 sprintf(drive, "/dev/%s", &checklist[i][3]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 insert = strchr(drive, '?');
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 if ( insert != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 *insert = j;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 #ifdef DEBUG_CDROM
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 switch (CheckDrive(drive, NULL, &stbuf)) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 /* Drive exists and is a CD-ROM */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 AddDrive(drive, &stbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 /* Drive exists, but isn't a CD-ROM */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 case 0:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 /* Drive doesn't exist */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 case -1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 exists = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 sprintf(drive, "/dev/%s", checklist[i]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 #ifdef DEBUG_CDROM
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 if ( CheckDrive(drive, NULL, &stbuf) > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 AddDrive(drive, &stbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 /* General ioctl() CD-ROM command function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 static int SDL_SYS_CDioctl(int id, int command, void *arg)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 int retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 retval = ioctl(id, command, arg);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 if ( retval < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 SDL_SetError("ioctl() error: %s", strerror(errno));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 static const char *SDL_SYS_CDName(int drive)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 return(SDL_cdlist[drive]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 static int SDL_SYS_CDOpen(int drive)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 return(open(SDL_cdlist[drive], (O_RDONLY|O_EXCL|O_NONBLOCK), 0));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 struct cdrom_tochdr toc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 int i, okay;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 struct cdrom_tocentry entry;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 okay = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 cdrom->numtracks = SDL_MAX_TRACKS;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 /* Read all the track TOC entries */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 for ( i=0; i<=cdrom->numtracks; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 if ( i == cdrom->numtracks ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 cdrom->track[i].id = CDROM_LEADOUT;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 cdrom->track[i].id = toc.cdth_trk0+i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 entry.cdte_track = cdrom->track[i].id;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 entry.cdte_format = CDROM_MSF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 &entry) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 cdrom->track[i].type = SDL_DATA_TRACK;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 cdrom->track[i].type = SDL_AUDIO_TRACK;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 cdrom->track[i].offset = MSF_TO_FRAMES(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 entry.cdte_addr.msf.minute,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 entry.cdte_addr.msf.second,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 entry.cdte_addr.msf.frame);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 cdrom->track[i].length = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 if ( i > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 cdrom->track[i-1].length =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 cdrom->track[i].offset-
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 cdrom->track[i-1].offset;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 if ( i == (cdrom->numtracks+1) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 okay = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 return(okay ? 0 : -1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 /* Get CD-ROM status */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 CDstatus status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 struct cdrom_tochdr toc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 struct cdrom_subchnl info;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 info.cdsc_format = CDROM_MSF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 if ( ERRNO_TRAYEMPTY(errno) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 status = CD_TRAYEMPTY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 status = CD_ERROR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 switch (info.cdsc_audiostatus) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 case CDROM_AUDIO_INVALID:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 case CDROM_AUDIO_NO_STATUS:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 /* Try to determine if there's a CD available */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 status = CD_TRAYEMPTY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 case CDROM_AUDIO_COMPLETED:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 case CDROM_AUDIO_PLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 status = CD_PLAYING;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 case CDROM_AUDIO_PAUSED:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 /* Workaround buggy CD-ROM drive */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 if ( info.cdsc_trk == CDROM_LEADOUT ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 status = CD_PAUSED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 status = CD_ERROR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 if ( position ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 if ( status == CD_PLAYING || (status == CD_PAUSED) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 *position = MSF_TO_FRAMES(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 info.cdsc_absaddr.msf.minute,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 info.cdsc_absaddr.msf.second,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 info.cdsc_absaddr.msf.frame);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 *position = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 return(status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 /* Start play */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 struct cdrom_msf playtime;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 FRAMES_TO_MSF(start,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 FRAMES_TO_MSF(start+length,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 #ifdef DEBUG_CDROM
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
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500 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
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501 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
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502 #endif
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503 return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime));
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504 }
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505
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506 /* Pause play */
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507 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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508 {
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509 return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0));
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510 }
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511
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512 /* Resume play */
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513 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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514 {
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515 return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0));
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516 }
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517
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518 /* Stop play */
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519 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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520 {
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521 return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0));
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522 }
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523
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524 /* Eject the CD-ROM */
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525 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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526 {
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527 return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0));
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528 }
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529
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530 /* Close the CD-ROM handle */
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531 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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532 {
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533 close(cdrom->id);
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534 }
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535
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536 void SDL_SYS_CDQuit(void)
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537 {
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538 int i;
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539
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540 if ( SDL_numcds > 0 ) {
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541 for ( i=0; i<SDL_numcds; ++i ) {
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542 free(SDL_cdlist[i]);
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543 }
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544 SDL_numcds = 0;
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545 }
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546 }
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547