annotate src/cdrom/linux/SDL_syscdrom.c @ 4271:c57d816eb9c5 SDL-1.2

Updated version for mingw32 build
author Sam Lantinga <slouken@libsdl.org>
date Fri, 02 Oct 2009 11:12:04 +0000
parents a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 Lesser General Public
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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.
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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 Lesser 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 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
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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 #include "SDL_config.h"
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23
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24 #ifdef SDL_CDROM_LINUX
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25
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26 /* Functions for system-level CD-ROM audio control */
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27
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28 #include <string.h> /* For strerror() */
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29 #include <sys/types.h>
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30 #include <sys/stat.h>
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31 #include <sys/ioctl.h>
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32 #include <fcntl.h>
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33 #include <errno.h>
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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 */
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49 #include <linux/cdrom.h>
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50 #endif
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51 #ifdef __SVR4
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52 #include <sys/cdio.h>
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53 #endif
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54
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55 /* Define this to use the alternative getmntent() code */
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56 #ifndef __SVR4
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57 #define USE_MNTENT
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58 #endif
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59
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60 #ifdef USE_MNTENT
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61 #if defined(__USLC__)
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62 #include <sys/mntent.h>
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63 #else
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64 #include <mntent.h>
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65 #endif
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66
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67 #ifndef _PATH_MNTTAB
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68 #ifdef MNTTAB
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69 #define _PATH_MNTTAB MNTTAB
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70 #else
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71 #define _PATH_MNTTAB "/etc/fstab"
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72 #endif
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73 #endif /* !_PATH_MNTTAB */
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74
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75 #ifndef _PATH_MOUNTED
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76 #define _PATH_MOUNTED "/etc/mtab"
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77 #endif /* !_PATH_MOUNTED */
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78
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79 #ifndef MNTTYPE_CDROM
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80 #define MNTTYPE_CDROM "iso9660"
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81 #endif
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82 #ifndef MNTTYPE_SUPER
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83 #define MNTTYPE_SUPER "supermount"
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84 #endif
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85 #endif /* USE_MNTENT */
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86
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87 #include "SDL_cdrom.h"
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88 #include "../SDL_syscdrom.h"
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89
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90
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91 /* The maximum number of CD-ROM drives we'll detect */
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92 #define MAX_DRIVES 16
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93
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94 /* A list of available CD-ROM drives */
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95 static char *SDL_cdlist[MAX_DRIVES];
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96 static dev_t SDL_cdmode[MAX_DRIVES];
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97
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98 /* The system-dependent CD control functions */
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99 static const char *SDL_SYS_CDName(int drive);
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100 static int SDL_SYS_CDOpen(int drive);
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101 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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102 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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103 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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104 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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105 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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106 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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107 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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108 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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109
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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
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114 #define ERRNO_TRAYEMPTY(errno) \
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115 ((errno == EIO) || (errno == ENOENT) || \
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116 (errno == EINVAL) || (errno == ENOMEDIUM))
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117
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118 /* Check a drive to see if it is a CD-ROM */
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119 static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf)
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120 {
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121 int is_cd, cdfd;
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122 struct cdrom_subchnl info;
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123
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124 /* If it doesn't exist, return -1 */
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125 if ( stat(drive, stbuf) < 0 ) {
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126 return(-1);
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127 }
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128
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129 /* If it does exist, verify that it's an available CD-ROM */
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130 is_cd = 0;
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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);
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133 if ( cdfd >= 0 ) {
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134 info.cdsc_format = CDROM_MSF;
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135 /* Under Linux, EIO occurs when a disk is not present.
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136 */
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137 if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) ||
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138 ERRNO_TRAYEMPTY(errno) ) {
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139 is_cd = 1;
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140 }
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141 close(cdfd);
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142 }
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143 #ifdef USE_MNTENT
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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) ) {
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146 is_cd = 1;
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147 }
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148 #endif
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149 }
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150 return(is_cd);
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151 }
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152
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153 /* Add a CD-ROM drive to our list of valid drives */
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154 static void AddDrive(char *drive, struct stat *stbuf)
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155 {
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156 int i;
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157
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158 if ( SDL_numcds < MAX_DRIVES ) {
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159 /* Check to make sure it's not already in our list.
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160 This can happen when we see a drive via symbolic link.
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161 */
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162 for ( i=0; i<SDL_numcds; ++i ) {
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163 if ( stbuf->st_rdev == SDL_cdmode[i] ) {
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164 #ifdef DEBUG_CDROM
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165 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
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166 #endif
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167 return;
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168 }
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169 }
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170
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171 /* Add this drive to our list */
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172 i = SDL_numcds;
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173 SDL_cdlist[i] = SDL_strdup(drive);
0
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174 if ( SDL_cdlist[i] == NULL ) {
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175 SDL_OutOfMemory();
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176 return;
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177 }
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178 SDL_cdmode[i] = stbuf->st_rdev;
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179 ++SDL_numcds;
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180 #ifdef DEBUG_CDROM
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181 fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
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182 #endif
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183 }
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184 }
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185
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186 #ifdef USE_MNTENT
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187 static void CheckMounts(const char *mtab)
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188 {
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189 FILE *mntfp;
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190 struct mntent *mntent;
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191 struct stat stbuf;
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192
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193 mntfp = setmntent(mtab, "r");
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194 if ( mntfp != NULL ) {
139
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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;
139
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198 char *mnt_dev;
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199 size_t mnt_dev_len;
0
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200
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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);
139
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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);
139
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209 if (mnt_dev == NULL) {
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210 SDL_stack_free(mnt_type);
139
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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
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216
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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
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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="));
247
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223 if ( mnt_type ) {
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224 tmp = SDL_strchr(mnt_type, ',');
247
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225 if ( tmp ) {
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226 *tmp = '\0';
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227 }
0
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228 }
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229 }
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230 tmp = SDL_strstr(mntent->mnt_opts, "dev=");
0
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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="));
247
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234 if ( mnt_dev ) {
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235 tmp = SDL_strchr(mnt_dev, ',');
247
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diff changeset
236 if ( tmp ) {
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diff changeset
237 *tmp = '\0';
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238 }
0
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239 }
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240 }
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241 }
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242 if ( SDL_strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) {
0
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243 #ifdef DEBUG_CDROM
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244 fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n",
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245 mtab, mnt_dev, mntent->mnt_dir, mnt_type);
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246 #endif
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247 if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) {
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248 AddDrive(mnt_dev, &stbuf);
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249 }
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250 }
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diff changeset
251 SDL_stack_free(mnt_dev);
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252 SDL_stack_free(mnt_type);
0
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253 }
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254 endmntent(mntfp);
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255 }
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256 }
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257 #endif /* USE_MNTENT */
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258
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259 int SDL_SYS_CDInit(void)
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260 {
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261 /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */
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262 static char *checklist[] = {
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diff changeset
263 "cdrom", "?a hd?", "?0 scd?", "?0 sr?", NULL
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264 };
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265 char *SDLcdrom;
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266 int i, j, exists;
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267 char drive[32];
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268 struct stat stbuf;
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269
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270 /* Fill in our driver capabilities */
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271 SDL_CDcaps.Name = SDL_SYS_CDName;
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272 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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273 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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274 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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275 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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276 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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277 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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278 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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279 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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280 SDL_CDcaps.Close = SDL_SYS_CDClose;
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281
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282 /* Look in the environment for our CD-ROM drive list */
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diff changeset
283 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */
0
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diff changeset
284 if ( SDLcdrom != NULL ) {
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diff changeset
285 char *cdpath, *delim;
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diff changeset
286 size_t len = SDL_strlen(SDLcdrom)+1;
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diff changeset
287 cdpath = SDL_stack_alloc(char, len);
0
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diff changeset
288 if ( cdpath != NULL ) {
1379
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diff changeset
289 SDL_strlcpy(cdpath, SDLcdrom, len);
0
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diff changeset
290 SDLcdrom = cdpath;
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diff changeset
291 do {
1336
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292 delim = SDL_strchr(SDLcdrom, ':');
0
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293 if ( delim ) {
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diff changeset
294 *delim++ = '\0';
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diff changeset
295 }
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diff changeset
296 #ifdef DEBUG_CDROM
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297 fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom);
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diff changeset
298 #endif
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diff changeset
299 if ( CheckDrive(SDLcdrom, NULL, &stbuf) > 0 ) {
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diff changeset
300 AddDrive(SDLcdrom, &stbuf);
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parents:
diff changeset
301 }
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parents:
diff changeset
302 if ( delim ) {
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parents:
diff changeset
303 SDLcdrom = delim;
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parents:
diff changeset
304 } else {
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diff changeset
305 SDLcdrom = NULL;
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diff changeset
306 }
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diff changeset
307 } while ( SDLcdrom );
1379
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diff changeset
308 SDL_stack_free(cdpath);
0
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diff changeset
309 }
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diff changeset
310
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 /* If we found our drives, there's nothing left to do */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 if ( SDL_numcds > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 #ifdef USE_MNTENT
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 /* Check /dev/cdrom first :-) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 AddDrive("/dev/cdrom", &stbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 /* Now check the currently mounted CD drives */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 CheckMounts(_PATH_MOUNTED);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 /* Finally check possible mountable drives in /etc/fstab */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 CheckMounts(_PATH_MNTTAB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 /* If we found our drives, there's nothing left to do */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 if ( SDL_numcds > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 #endif /* USE_MNTENT */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 /* Scan the system for CD-ROM drives.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 Not always 100% reliable, so use the USE_MNTENT code above first.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 for ( i=0; checklist[i]; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 if ( checklist[i][0] == '?' ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 char *insert;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 exists = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 for ( j=checklist[i][1]; exists; ++j ) {
1338
604d73db6802 Removed uses of stdlib.h and string.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
343 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", &checklist[i][3]);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
344 insert = SDL_strchr(drive, '?');
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 if ( insert != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 *insert = j;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 #ifdef DEBUG_CDROM
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 switch (CheckDrive(drive, NULL, &stbuf)) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 /* Drive exists and is a CD-ROM */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 AddDrive(drive, &stbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 /* Drive exists, but isn't a CD-ROM */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 case 0:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 /* Drive doesn't exist */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 case -1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 exists = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 } else {
1338
604d73db6802 Removed uses of stdlib.h and string.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
366 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 #ifdef DEBUG_CDROM
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 if ( CheckDrive(drive, NULL, &stbuf) > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 AddDrive(drive, &stbuf);
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 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 /* General ioctl() CD-ROM command function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 static int SDL_SYS_CDioctl(int id, int command, void *arg)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 int retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 retval = ioctl(id, command, arg);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 if ( retval < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 SDL_SetError("ioctl() error: %s", strerror(errno));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 static const char *SDL_SYS_CDName(int drive)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 return(SDL_cdlist[drive]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 static int SDL_SYS_CDOpen(int drive)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 {
1051
091350827e08 SDL_CDOpen() fails on Linux if data track on disc is mounted in the
Ryan C. Gordon <icculus@icculus.org>
parents: 998
diff changeset
397 return(open(SDL_cdlist[drive], (O_RDONLY|O_NONBLOCK), 0));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 struct cdrom_tochdr toc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 int i, okay;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 struct cdrom_tocentry entry;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 okay = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 cdrom->numtracks = SDL_MAX_TRACKS;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 /* Read all the track TOC entries */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 for ( i=0; i<=cdrom->numtracks; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 if ( i == cdrom->numtracks ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 cdrom->track[i].id = CDROM_LEADOUT;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 cdrom->track[i].id = toc.cdth_trk0+i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 entry.cdte_track = cdrom->track[i].id;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 entry.cdte_format = CDROM_MSF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 &entry) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 cdrom->track[i].type = SDL_DATA_TRACK;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 cdrom->track[i].type = SDL_AUDIO_TRACK;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 cdrom->track[i].offset = MSF_TO_FRAMES(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 entry.cdte_addr.msf.minute,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 entry.cdte_addr.msf.second,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 entry.cdte_addr.msf.frame);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 cdrom->track[i].length = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 if ( i > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 cdrom->track[i-1].length =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 cdrom->track[i].offset-
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 cdrom->track[i-1].offset;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 if ( i == (cdrom->numtracks+1) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 okay = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 return(okay ? 0 : -1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 /* Get CD-ROM status */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 CDstatus status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 struct cdrom_tochdr toc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 struct cdrom_subchnl info;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 info.cdsc_format = CDROM_MSF;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 if ( ERRNO_TRAYEMPTY(errno) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 status = CD_TRAYEMPTY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 status = CD_ERROR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 switch (info.cdsc_audiostatus) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 case CDROM_AUDIO_INVALID:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 case CDROM_AUDIO_NO_STATUS:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 /* Try to determine if there's a CD available */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 status = CD_TRAYEMPTY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 case CDROM_AUDIO_COMPLETED:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 case CDROM_AUDIO_PLAY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 status = CD_PLAYING;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 case CDROM_AUDIO_PAUSED:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 /* Workaround buggy CD-ROM drive */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 if ( info.cdsc_trk == CDROM_LEADOUT ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 status = CD_STOPPED;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 } else {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 status = CD_PAUSED;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 status = CD_ERROR;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 if ( position ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 if ( status == CD_PLAYING || (status == CD_PAUSED) ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 *position = MSF_TO_FRAMES(
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 info.cdsc_absaddr.msf.minute,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 info.cdsc_absaddr.msf.second,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 info.cdsc_absaddr.msf.frame);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 } else {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 *position = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 return(status);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 /* Start play */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 struct cdrom_msf playtime;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 FRAMES_TO_MSF(start,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 FRAMES_TO_MSF(start+length,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 #ifdef DEBUG_CDROM
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 #endif
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 /* Pause play */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 static int SDL_SYS_CDPause(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 /* Resume play */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 static int SDL_SYS_CDResume(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 /* Stop play */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 static int SDL_SYS_CDStop(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 /* Eject the CD-ROM */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 static int SDL_SYS_CDEject(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 /* Close the CD-ROM handle */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 static void SDL_SYS_CDClose(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 close(cdrom->id);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 void SDL_SYS_CDQuit(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 if ( SDL_numcds > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 for ( i=0; i<SDL_numcds; ++i ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
558 SDL_free(SDL_cdlist[i]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 SDL_numcds = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
564 #endif /* SDL_CDROM_LINUX */