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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_BEOS |
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25 |
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26 /* Functions for system-level CD-ROM audio control on BeOS |
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27 (not completely implemented yet) |
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28 */ |
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29 |
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30 #include <sys/types.h> |
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31 #include <sys/stat.h> |
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32 #include <unistd.h> |
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33 |
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34 #include <scsi.h> |
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35 #include <Directory.h> |
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36 #include <Entry.h> |
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37 #include <Path.h> |
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38 |
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39 #include "SDL_cdrom.h" |
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40 extern "C" { |
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41 #include "../SDL_syscdrom.h" |
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42 } |
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43 |
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44 /* Constants to help us get at the SCSI table-of-contents info */ |
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45 #define CD_NUMTRACKS(toc) toc.toc_data[3] |
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46 #define CD_TRACK(toc, track) (&toc.toc_data[6+(track)*8]) |
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47 #define CD_TRACK_N(toc, track) CD_TRACK(toc, track)[0] |
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48 #define CD_TRACK_M(toc, track) CD_TRACK(toc, track)[3] |
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49 #define CD_TRACK_S(toc, track) CD_TRACK(toc, track)[4] |
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50 #define CD_TRACK_F(toc, track) CD_TRACK(toc, track)[5] |
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51 |
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52 /* Constants to help us get at the SCSI position info */ |
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53 #define POS_TRACK(pos) pos.position[6] |
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54 #define POS_ABS_M(pos) pos.position[9] |
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55 #define POS_ABS_S(pos) pos.position[10] |
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56 #define POS_ABS_F(pos) pos.position[11] |
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57 #define POS_REL_M(pos) pos.position[13] |
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58 #define POS_REL_S(pos) pos.position[14] |
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59 #define POS_REL_F(pos) pos.position[15] |
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60 |
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61 /* The maximum number of CD-ROM drives we'll detect */ |
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62 #define MAX_DRIVES 16 |
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63 |
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64 /* A list of available CD-ROM drives */ |
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65 static char *SDL_cdlist[MAX_DRIVES]; |
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66 |
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67 /* The system-dependent CD control functions */ |
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68 static const char *SDL_SYS_CDName(int drive); |
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69 static int SDL_SYS_CDOpen(int drive); |
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70 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); |
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71 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); |
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72 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); |
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73 static int SDL_SYS_CDPause(SDL_CD *cdrom); |
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74 static int SDL_SYS_CDResume(SDL_CD *cdrom); |
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75 static int SDL_SYS_CDStop(SDL_CD *cdrom); |
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76 static int SDL_SYS_CDEject(SDL_CD *cdrom); |
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77 static void SDL_SYS_CDClose(SDL_CD *cdrom); |
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78 int try_dir(const char *directory); |
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79 |
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80 |
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81 /* Check a drive to see if it is a CD-ROM */ |
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82 static int CheckDrive(char *drive) |
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83 { |
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84 struct stat stbuf; |
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85 int is_cd, cdfd; |
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86 device_geometry info; |
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87 |
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88 /* If it doesn't exist, return -1 */ |
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89 if ( stat(drive, &stbuf) < 0 ) { |
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90 return(-1); |
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91 } |
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92 |
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93 /* If it does exist, verify that it's an available CD-ROM */ |
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94 is_cd = 0; |
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95 cdfd = open(drive, 0); |
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96 if ( cdfd >= 0 ) { |
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97 if ( ioctl(cdfd, B_GET_GEOMETRY, &info) == B_NO_ERROR ) { |
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98 if ( info.device_type == B_CD ) { |
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99 is_cd = 1; |
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100 } |
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101 } |
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102 close(cdfd); |
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103 } else { |
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104 /* This can happen when the drive is open .. (?) */; |
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105 is_cd = 1; |
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106 } |
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107 return(is_cd); |
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108 } |
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109 |
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110 /* Add a CD-ROM drive to our list of valid drives */ |
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111 static void AddDrive(char *drive) |
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112 { |
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113 int i; |
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114 size_t len; |
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115 |
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116 if ( SDL_numcds < MAX_DRIVES ) { |
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117 /* Add this drive to our list */ |
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118 i = SDL_numcds; |
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119 len = SDL_strlen(drive)+1; |
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120 SDL_cdlist[i] = (char *)SDL_malloc(len); |
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121 if ( SDL_cdlist[i] == NULL ) { |
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122 SDL_OutOfMemory(); |
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123 return; |
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124 } |
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125 SDL_strlcpy(SDL_cdlist[i], drive, len); |
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126 ++SDL_numcds; |
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127 #ifdef CDROM_DEBUG |
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128 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); |
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129 #endif |
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130 } |
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131 } |
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132 |
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133 /* IDE bus scanning magic */ |
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134 enum { |
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135 IDE_GET_DEVICES_INFO = B_DEVICE_OP_CODES_END + 50, |
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136 }; |
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137 struct ide_ctrl_info { |
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138 bool ide_0_present; |
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139 bool ide_0_master_present; |
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140 bool ide_0_slave_present; |
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141 int ide_0_master_type; |
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142 int ide_0_slave_type; |
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143 bool ide_1_present; |
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144 bool ide_1_master_present; |
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145 bool ide_1_slave_present; |
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146 int ide_1_master_type; |
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147 int ide_1_slave_type; |
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148 }; |
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149 |
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150 int SDL_SYS_CDInit(void) |
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151 { |
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152 char *SDLcdrom; |
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153 int raw_fd; |
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154 struct ide_ctrl_info info; |
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155 |
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156 /* Fill in our driver capabilities */ |
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157 SDL_CDcaps.Name = SDL_SYS_CDName; |
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158 SDL_CDcaps.Open = SDL_SYS_CDOpen; |
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159 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; |
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160 SDL_CDcaps.Status = SDL_SYS_CDStatus; |
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161 SDL_CDcaps.Play = SDL_SYS_CDPlay; |
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162 SDL_CDcaps.Pause = SDL_SYS_CDPause; |
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163 SDL_CDcaps.Resume = SDL_SYS_CDResume; |
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164 SDL_CDcaps.Stop = SDL_SYS_CDStop; |
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165 SDL_CDcaps.Eject = SDL_SYS_CDEject; |
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166 SDL_CDcaps.Close = SDL_SYS_CDClose; |
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167 |
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168 /* Look in the environment for our CD-ROM drive list */ |
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169 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ |
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170 if ( SDLcdrom != NULL ) { |
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171 char *cdpath, *delim; |
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172 size_t len = SDL_strlen(SDLcdrom)+1; |
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173 cdpath = SDL_stack_alloc(char, len); |
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174 if ( cdpath != NULL ) { |
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175 SDL_strlcpy(cdpath, SDLcdrom, len); |
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176 SDLcdrom = cdpath; |
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177 do { |
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178 delim = SDL_strchr(SDLcdrom, ':'); |
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179 if ( delim ) { |
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180 *delim++ = '\0'; |
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181 } |
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182 if ( CheckDrive(SDLcdrom) > 0 ) { |
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183 AddDrive(SDLcdrom); |
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184 } |
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185 if ( delim ) { |
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186 SDLcdrom = delim; |
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187 } else { |
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188 SDLcdrom = NULL; |
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189 } |
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190 } while ( SDLcdrom ); |
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191 SDL_stack_free(cdpath); |
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192 } |
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193 |
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194 /* If we found our drives, there's nothing left to do */ |
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195 if ( SDL_numcds > 0 ) { |
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196 return(0); |
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197 } |
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198 } |
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199 |
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200 /* Scan the system for CD-ROM drives */ |
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201 try_dir("/dev/disk"); |
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202 return 0; |
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203 } |
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204 |
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205 |
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206 int try_dir(const char *directory) |
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207 { |
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208 BDirectory dir; |
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209 dir.SetTo(directory); |
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210 if(dir.InitCheck() != B_NO_ERROR) { |
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211 return false; |
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212 } |
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213 dir.Rewind(); |
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214 BEntry entry; |
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215 while(dir.GetNextEntry(&entry) >= 0) { |
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216 BPath path; |
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217 const char *name; |
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218 entry_ref e; |
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219 |
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220 if(entry.GetPath(&path) != B_NO_ERROR) |
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221 continue; |
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222 name = path.Path(); |
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223 |
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224 if(entry.GetRef(&e) != B_NO_ERROR) |
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225 continue; |
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226 |
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227 if(entry.IsDirectory()) { |
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228 if(SDL_strcmp(e.name, "floppy") == 0) |
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229 continue; /* ignore floppy (it is not silent) */ |
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230 int devfd = try_dir(name); |
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231 if(devfd >= 0) |
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232 return devfd; |
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233 } |
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234 else { |
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235 int devfd; |
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236 device_geometry g; |
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237 |
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238 if(SDL_strcmp(e.name, "raw") != 0) |
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239 continue; /* ignore partitions */ |
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240 |
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241 devfd = open(name, O_RDONLY); |
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242 if(devfd < 0) |
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243 continue; |
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244 |
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245 if(ioctl(devfd, B_GET_GEOMETRY, &g, sizeof(g)) >= 0) { |
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246 if(g.device_type == B_CD) |
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247 { |
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248 AddDrive(strdup(name)); |
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249 } |
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250 } |
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251 close(devfd); |
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252 } |
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253 } |
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254 return B_ERROR; |
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255 } |
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256 |
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257 |
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258 /* General ioctl() CD-ROM command function */ |
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259 static int SDL_SYS_CDioctl(int index, int command, void *arg) |
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260 { |
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261 int okay; |
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262 int fd; |
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263 |
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264 okay = 0; |
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265 fd = open(SDL_cdlist[index], 0); |
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266 if ( fd >= 0 ) { |
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267 if ( ioctl(fd, command, arg) == B_NO_ERROR ) { |
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268 okay = 1; |
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269 } |
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270 close(fd); |
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271 } |
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272 return(okay ? 0 : -1); |
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273 } |
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274 |
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275 static const char *SDL_SYS_CDName(int drive) |
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276 { |
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277 return(SDL_cdlist[drive]); |
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278 } |
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279 |
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280 static int SDL_SYS_CDOpen(int drive) |
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281 { |
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282 return(drive); |
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283 } |
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284 |
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285 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) |
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286 { |
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287 int i; |
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288 scsi_toc toc; |
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289 |
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290 if ( SDL_SYS_CDioctl(cdrom->id, B_SCSI_GET_TOC, &toc) == 0 ) { |
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291 cdrom->numtracks = CD_NUMTRACKS(toc); |
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292 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { |
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293 cdrom->numtracks = SDL_MAX_TRACKS; |
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294 } |
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295 for ( i=0; i<=cdrom->numtracks; ++i ) { |
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296 cdrom->track[i].id = CD_TRACK_N(toc, i); |
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297 /* FIXME: How do we tell on BeOS? */ |
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298 cdrom->track[i].type = SDL_AUDIO_TRACK; |
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299 cdrom->track[i].offset = MSF_TO_FRAMES( |
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300 CD_TRACK_M(toc, i), |
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301 CD_TRACK_S(toc, i), |
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302 CD_TRACK_F(toc, i)); |
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303 cdrom->track[i].length = 0; |
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304 if ( i > 0 ) { |
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305 cdrom->track[i-1].length = |
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306 cdrom->track[i].offset- |
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307 cdrom->track[i-1].offset; |
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308 } |
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309 } |
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310 return(0); |
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311 } else { |
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312 return(-1); |
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313 } |
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314 } |
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315 |
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316 /* Get CD-ROM status */ |
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317 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) |
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318 { |
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319 CDstatus status; |
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320 int fd; |
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321 int cur_frame; |
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322 scsi_position pos; |
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323 |
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324 fd = open(SDL_cdlist[cdrom->id], 0); |
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325 cur_frame = 0; |
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326 if ( fd >= 0 ) { |
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327 if ( ioctl(fd, B_SCSI_GET_POSITION, &pos) == B_NO_ERROR ) { |
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328 cur_frame = MSF_TO_FRAMES( |
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329 POS_ABS_M(pos), POS_ABS_S(pos), POS_ABS_F(pos)); |
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330 } |
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331 if ( ! pos.position[1] || (pos.position[1] >= 0x13) || |
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332 ((pos.position[1] == 0x12) && (!pos.position[6])) ) { |
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333 status = CD_STOPPED; |
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334 } else |
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335 if ( pos.position[1] == 0x11 ) { |
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336 status = CD_PLAYING; |
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337 } else { |
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338 status = CD_PAUSED; |
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339 } |
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340 close(fd); |
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341 } else { |
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342 status = CD_TRAYEMPTY; |
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343 } |
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344 if ( position ) { |
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345 *position = cur_frame; |
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346 } |
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347 return(status); |
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348 } |
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349 |
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350 /* Start play */ |
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351 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) |
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352 { |
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353 int okay; |
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354 int fd; |
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355 scsi_play_position pos; |
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356 |
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357 okay = 0; |
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358 fd = open(SDL_cdlist[cdrom->id], 0); |
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359 if ( fd >= 0 ) { |
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360 FRAMES_TO_MSF(start, &pos.start_m, &pos.start_s, &pos.start_f); |
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361 FRAMES_TO_MSF(start+length, &pos.end_m, &pos.end_s, &pos.end_f); |
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362 if ( ioctl(fd, B_SCSI_PLAY_POSITION, &pos) == B_NO_ERROR ) { |
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363 okay = 1; |
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364 } |
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365 close(fd); |
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366 } |
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367 return(okay ? 0 : -1); |
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368 } |
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369 |
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370 /* Pause play */ |
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371 static int SDL_SYS_CDPause(SDL_CD *cdrom) |
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372 { |
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373 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_PAUSE_AUDIO, 0)); |
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374 } |
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375 |
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376 /* Resume play */ |
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377 static int SDL_SYS_CDResume(SDL_CD *cdrom) |
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378 { |
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379 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_RESUME_AUDIO, 0)); |
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380 } |
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381 |
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382 /* Stop play */ |
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383 static int SDL_SYS_CDStop(SDL_CD *cdrom) |
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384 { |
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385 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_STOP_AUDIO, 0)); |
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386 } |
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387 |
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388 /* Eject the CD-ROM */ |
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389 static int SDL_SYS_CDEject(SDL_CD *cdrom) |
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390 { |
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391 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_EJECT, 0)); |
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392 } |
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393 |
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394 /* Close the CD-ROM handle */ |
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395 static void SDL_SYS_CDClose(SDL_CD *cdrom) |
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396 { |
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397 close(cdrom->id); |
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398 } |
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399 |
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400 void SDL_SYS_CDQuit(void) |
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401 { |
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402 int i; |
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403 |
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404 if ( SDL_numcds > 0 ) { |
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405 for ( i=0; i<SDL_numcds; ++i ) { |
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406 SDL_free(SDL_cdlist[i]); |
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407 } |
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408 SDL_numcds = 0; |
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409 } |
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410 } |
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411 |
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412 #endif /* SDL_CDROM_BEOS */ |