annotate src/cdrom/freebsd/SDL_syscdrom.c @ 1635:92947e3a18db

Make sure code is only compiled if the appropriate subsystem is enabled
author Sam Lantinga <slouken@libsdl.org>
date Fri, 14 Apr 2006 04:46:47 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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_FREEBSD
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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 <sys/types.h>
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29 #include <sys/stat.h>
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30 #include <fcntl.h>
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31 #include <errno.h>
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32 #include <unistd.h>
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33 #include <sys/cdio.h>
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34
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35 #include "SDL_cdrom.h"
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36 #include "../SDL_syscdrom.h"
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37
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38
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39 /* The maximum number of CD-ROM drives we'll detect */
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40 #define MAX_DRIVES 16
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41
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42 /* A list of available CD-ROM drives */
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43 static char *SDL_cdlist[MAX_DRIVES];
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44 static dev_t SDL_cdmode[MAX_DRIVES];
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45
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46 /* The system-dependent CD control functions */
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47 static const char *SDL_SYS_CDName(int drive);
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48 static int SDL_SYS_CDOpen(int drive);
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49 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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50 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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51 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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52 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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53 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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54 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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55 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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56 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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57
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58 /* Some ioctl() errno values which occur when the tray is empty */
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59 #define ERRNO_TRAYEMPTY(errno) \
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60 ((errno == EIO) || (errno == ENOENT) || (errno == EINVAL))
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61
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62 /* Check a drive to see if it is a CD-ROM */
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63 static int CheckDrive(char *drive, struct stat *stbuf)
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64 {
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65 int is_cd, cdfd;
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66 struct ioc_read_subchannel info;
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67
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68 /* If it doesn't exist, return -1 */
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69 if ( stat(drive, stbuf) < 0 ) {
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70 return(-1);
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71 }
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72
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73 /* If it does exist, verify that it's an available CD-ROM */
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74 is_cd = 0;
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75 if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) {
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76 cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0);
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77 if ( cdfd >= 0 ) {
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78 info.address_format = CD_MSF_FORMAT;
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79 info.data_format = CD_CURRENT_POSITION;
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80 info.data_len = 0;
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81 info.data = NULL;
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82 /* Under Linux, EIO occurs when a disk is not present.
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83 This isn't 100% reliable, so we use the USE_MNTENT
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84 code above instead.
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85 */
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86 if ( (ioctl(cdfd, CDIOCREADSUBCHANNEL, &info) == 0) ||
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87 ERRNO_TRAYEMPTY(errno) ) {
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88 is_cd = 1;
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89 }
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90 close(cdfd);
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91 }
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92 }
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93 return(is_cd);
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94 }
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95
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96 /* Add a CD-ROM drive to our list of valid drives */
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97 static void AddDrive(char *drive, struct stat *stbuf)
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98 {
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99 int i;
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100
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101 if ( SDL_numcds < MAX_DRIVES ) {
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102 /* Check to make sure it's not already in our list.
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103 This can happen when we see a drive via symbolic link.
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104 */
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105 for ( i=0; i<SDL_numcds; ++i ) {
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106 if ( stbuf->st_rdev == SDL_cdmode[i] ) {
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107 #ifdef DEBUG_CDROM
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108 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
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109 #endif
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110 return;
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111 }
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112 }
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113
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114 /* Add this drive to our list */
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115 i = SDL_numcds;
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116 SDL_cdlist[i] = SDL_strdup(drive);
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117 if ( SDL_cdlist[i] == NULL ) {
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118 SDL_OutOfMemory();
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119 return;
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120 }
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121 SDL_cdmode[i] = stbuf->st_rdev;
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122 ++SDL_numcds;
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123 #ifdef DEBUG_CDROM
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124 fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
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125 #endif
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126 }
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127 }
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128
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129 int SDL_SYS_CDInit(void)
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130 {
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131 /* checklist: /dev/cdrom,/dev/cd?c /dev/acd?c
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132 /dev/matcd?c /dev/mcd?c /dev/scd?c */
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133 static char *checklist[] = {
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134 "cdrom", "?0 cd?", "?0 acd?", "?0 matcd?", "?0 mcd?", "?0 scd?",NULL
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135 };
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136 char *SDLcdrom;
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137 int i, j, exists;
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138 char drive[32];
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139 struct stat stbuf;
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140
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141 /* Fill in our driver capabilities */
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142 SDL_CDcaps.Name = SDL_SYS_CDName;
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143 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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144 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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145 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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146 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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147 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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148 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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149 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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150 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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151 SDL_CDcaps.Close = SDL_SYS_CDClose;
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152
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153 /* Look in the environment for our CD-ROM drive list */
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154 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */
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155 if ( SDLcdrom != NULL ) {
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156 char *cdpath, *delim;
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157 size_t len = SDL_strlen(SDLcdrom)+1;
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158 cdpath = SDL_stack_alloc(char, len);
0
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parents:
diff changeset
159 if ( cdpath != NULL ) {
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
160 SDL_strlcpy(cdpath, SDLcdrom, len);
0
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parents:
diff changeset
161 SDLcdrom = cdpath;
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parents:
diff changeset
162 do {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
163 delim = SDL_strchr(SDLcdrom, ':');
0
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parents:
diff changeset
164 if ( delim ) {
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parents:
diff changeset
165 *delim++ = '\0';
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
166 }
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parents:
diff changeset
167 if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) {
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parents:
diff changeset
168 AddDrive(SDLcdrom, &stbuf);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
169 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
170 if ( delim ) {
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parents:
diff changeset
171 SDLcdrom = delim;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
172 } else {
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parents:
diff changeset
173 SDLcdrom = NULL;
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parents:
diff changeset
174 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
175 } while ( SDLcdrom );
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
176 SDL_stack_free(cdpath);
0
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parents:
diff changeset
177 }
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parents:
diff changeset
178
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parents:
diff changeset
179 /* If we found our drives, there's nothing left to do */
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parents:
diff changeset
180 if ( SDL_numcds > 0 ) {
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parents:
diff changeset
181 return(0);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
182 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
183 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184
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parents:
diff changeset
185 /* Scan the system for CD-ROM drives */
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parents:
diff changeset
186 for ( i=0; checklist[i]; ++i ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187 if ( checklist[i][0] == '?' ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 char *insert;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 exists = 1;
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parents:
diff changeset
190 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
191 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%sc", &checklist[i][3]);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
192 insert = SDL_strchr(drive, '?');
0
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parents:
diff changeset
193 if ( insert != NULL ) {
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parents:
diff changeset
194 *insert = j;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
195 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
196 switch (CheckDrive(drive, &stbuf)) {
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parents:
diff changeset
197 /* Drive exists and is a CD-ROM */
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parents:
diff changeset
198 case 1:
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parents:
diff changeset
199 AddDrive(drive, &stbuf);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
200 break;
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parents:
diff changeset
201 /* Drive exists, but isn't a CD-ROM */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
202 case 0:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
204 /* Drive doesn't exist */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
205 case -1:
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parents:
diff changeset
206 exists = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
207 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210 } else {
1338
604d73db6802 Removed uses of stdlib.h and string.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
211 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]);
0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 if ( CheckDrive(drive, &stbuf) > 0 ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 AddDrive(drive, &stbuf);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 /* General ioctl() CD-ROM command function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 static int SDL_SYS_CDioctl(int id, int command, void *arg)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 int retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 retval = ioctl(id, command, arg);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 if ( retval < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 SDL_SetError("ioctl() error: %s", strerror(errno));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
232 static const char *SDL_SYS_CDName(int drive)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234 return(SDL_cdlist[drive]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 static int SDL_SYS_CDOpen(int drive)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 return(open(SDL_cdlist[drive], (O_RDONLY|O_EXCL|O_NONBLOCK), 0));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
243 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 struct ioc_toc_header toc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 int i, okay;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 struct ioc_read_toc_entry entry;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
247 struct cd_toc_entry data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249 okay = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
250 if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCHEADER, &toc) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
251 cdrom->numtracks = toc.ending_track-toc.starting_track+1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 cdrom->numtracks = SDL_MAX_TRACKS;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 /* Read all the track TOC entries */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 for ( i=0; i<=cdrom->numtracks; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 if ( i == cdrom->numtracks ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 cdrom->track[i].id = 0xAA; /* CDROM_LEADOUT */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
259 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
260 cdrom->track[i].id = toc.starting_track+i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
261 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
262 entry.starting_track = cdrom->track[i].id;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 entry.address_format = CD_MSF_FORMAT;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 entry.data_len = sizeof(data);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
265 entry.data = &data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCENTRYS,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267 &entry) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270 cdrom->track[i].type = data.control;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 cdrom->track[i].offset = MSF_TO_FRAMES(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 data.addr.msf.minute,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 data.addr.msf.second,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 data.addr.msf.frame);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 cdrom->track[i].length = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 if ( i > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 cdrom->track[i-1].length =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 cdrom->track[i].offset-
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 cdrom->track[i-1].offset;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 if ( i == (cdrom->numtracks+1) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 okay = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 return(okay ? 0 : -1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 /* Get CD-ROM status */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 CDstatus status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 struct ioc_toc_header toc;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 struct ioc_read_subchannel info;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 struct cd_sub_channel_info data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 info.address_format = CD_MSF_FORMAT;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 info.data_format = CD_CURRENT_POSITION;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 info.track = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 info.data_len = sizeof(data);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 info.data = &data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 if ( ioctl(cdrom->id, CDIOCREADSUBCHANNEL, &info) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 if ( ERRNO_TRAYEMPTY(errno) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 status = CD_TRAYEMPTY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 status = CD_ERROR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 switch (data.header.audio_status) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 case CD_AS_AUDIO_INVALID:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 case CD_AS_NO_STATUS:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 /* Try to determine if there's a CD available */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 if (ioctl(cdrom->id,CDIOREADTOCHEADER,&toc)==0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 status = CD_TRAYEMPTY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 case CD_AS_PLAY_COMPLETED:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 status = CD_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 case CD_AS_PLAY_IN_PROGRESS:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 status = CD_PLAYING;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 case CD_AS_PLAY_PAUSED:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 status = CD_PAUSED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 break;
74212992fb08 Initial revision
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328 default:
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329 status = CD_ERROR;
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330 break;
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331 }
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332 }
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333 if ( position ) {
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334 if ( status == CD_PLAYING || (status == CD_PAUSED) ) {
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335 *position = MSF_TO_FRAMES(
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336 data.what.position.absaddr.msf.minute,
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337 data.what.position.absaddr.msf.second,
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338 data.what.position.absaddr.msf.frame);
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339 } else {
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340 *position = 0;
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341 }
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342 }
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343 return(status);
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344 }
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345
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346 /* Start play */
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347 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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348 {
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349 struct ioc_play_msf playtime;
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350
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351 FRAMES_TO_MSF(start,
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352 &playtime.start_m, &playtime.start_s, &playtime.start_f);
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353 FRAMES_TO_MSF(start+length,
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354 &playtime.end_m, &playtime.end_s, &playtime.end_f);
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355 #ifdef DEBUG_CDROM
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356 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
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357 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
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358 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
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359 #endif
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360 ioctl(cdrom->id, CDIOCSTART, 0);
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361 return(SDL_SYS_CDioctl(cdrom->id, CDIOCPLAYMSF, &playtime));
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362 }
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363
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364 /* Pause play */
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365 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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366 {
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367 return(SDL_SYS_CDioctl(cdrom->id, CDIOCPAUSE, 0));
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368 }
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369
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370 /* Resume play */
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371 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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372 {
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373 return(SDL_SYS_CDioctl(cdrom->id, CDIOCRESUME, 0));
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374 }
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375
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376 /* Stop play */
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377 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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378 {
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379 return(SDL_SYS_CDioctl(cdrom->id, CDIOCSTOP, 0));
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380 }
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381
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382 /* Eject the CD-ROM */
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383 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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384 {
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385 return(SDL_SYS_CDioctl(cdrom->id, CDIOCEJECT, 0));
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386 }
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387
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388 /* Close the CD-ROM handle */
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389 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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390 {
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391 close(cdrom->id);
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392 }
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393
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394 void SDL_SYS_CDQuit(void)
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diff changeset
395 {
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diff changeset
396 int i;
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397
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parents:
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398 if ( SDL_numcds > 0 ) {
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diff changeset
399 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
400 SDL_free(SDL_cdlist[i]);
0
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parents:
diff changeset
401 }
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diff changeset
402 SDL_numcds = 0;
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parents:
diff changeset
403 }
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parents:
diff changeset
404 }
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parents:
diff changeset
405
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
406 #endif /* SDL_CDROM_FREEBSD */