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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Functions for system-level CD-ROM audio control on BeOS
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29 (not completely implemented yet)
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30 */
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31
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32 #include <sys/types.h>
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33 #include <stdlib.h>
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34 #include <sys/stat.h>
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35 #include <stdio.h>
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36 #include <string.h>
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37 #include <unistd.h>
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38
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39 #include <scsi.h>
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40
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41 #include "SDL_error.h"
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42 #include "SDL_cdrom.h"
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43 #include "SDL_syscdrom.h"
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44
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45 /* Constants to help us get at the SCSI table-of-contents info */
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46 #define CD_NUMTRACKS(toc) toc.toc_data[3]
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47 #define CD_TRACK(toc, track) (&toc.toc_data[6+(track)*8])
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48 #define CD_TRACK_N(toc, track) CD_TRACK(toc, track)[0]
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49 #define CD_TRACK_M(toc, track) CD_TRACK(toc, track)[3]
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50 #define CD_TRACK_S(toc, track) CD_TRACK(toc, track)[4]
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51 #define CD_TRACK_F(toc, track) CD_TRACK(toc, track)[5]
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52
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53 /* Constants to help us get at the SCSI position info */
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54 #define POS_TRACK(pos) pos.position[6]
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55 #define POS_ABS_M(pos) pos.position[9]
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56 #define POS_ABS_S(pos) pos.position[10]
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57 #define POS_ABS_F(pos) pos.position[11]
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58 #define POS_REL_M(pos) pos.position[13]
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59 #define POS_REL_S(pos) pos.position[14]
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60 #define POS_REL_F(pos) pos.position[15]
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61
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62 /* The maximum number of CD-ROM drives we'll detect */
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63 #define MAX_DRIVES 16
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64
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65 /* A list of available CD-ROM drives */
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66 static char *SDL_cdlist[MAX_DRIVES];
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67
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68 /* The system-dependent CD control functions */
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69 static const char *SDL_SYS_CDName(int drive);
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70 static int SDL_SYS_CDOpen(int drive);
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71 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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72 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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73 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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74 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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75 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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76 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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77 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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78 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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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
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115 if ( SDL_numcds < MAX_DRIVES ) {
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116 /* Add this drive to our list */
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117 i = SDL_numcds;
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118 SDL_cdlist[i] = (char *)malloc(strlen(drive)+1);
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119 if ( SDL_cdlist[i] == NULL ) {
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120 SDL_OutOfMemory();
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121 return;
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122 }
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123 strcpy(SDL_cdlist[i], drive);
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124 ++SDL_numcds;
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125 #ifdef CDROM_DEBUG
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126 fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
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127 #endif
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128 }
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129 }
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130
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131 # if 0 /* Save this for later, when I can test it */
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132 /* SCSI bus scanning magic */
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133 static int CheckSCSI(int path, int id, int lun)
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134 {
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135 int is_cd;
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136 int fd;
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137 scsiprobe_inquiry inquiry;
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138
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139 is_cd = 0;
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140 fd = open("/dev/scsiprobe", 0);
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141 if ( fd >= 0 ) {
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142 inquiry.path = path;
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143 inquiry.id = id;
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144 inquiry.lun = lun;
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145 inquiry.len = sizeof(inquiry);
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146 if ( ioctl(fd, B_SCSIPROBE_INQUIRY, &inquiry) == B_NO_ERROR ) {
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147 if ( (inquiry.data[0]&0x1F) == B_SCSI_CD ) {
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148 is_cd = 1;
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149 }
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150 }
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151 close(fd);
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152 }
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153 return(is_cd);
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154 }
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155 #endif
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156
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157 /* IDE bus scanning magic */
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158 enum {
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159 IDE_GET_DEVICES_INFO = B_DEVICE_OP_CODES_END + 50,
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160 };
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161 struct ide_ctrl_info {
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162 bool ide_0_present;
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163 bool ide_0_master_present;
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164 bool ide_0_slave_present;
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165 int ide_0_master_type;
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166 int ide_0_slave_type;
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167 bool ide_1_present;
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168 bool ide_1_master_present;
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169 bool ide_1_slave_present;
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170 int ide_1_master_type;
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171 int ide_1_slave_type;
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172 };
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173
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174 int SDL_SYS_CDInit(void)
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175 {
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176 char *SDLcdrom;
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177 int raw_fd;
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178 struct ide_ctrl_info info;
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179
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180 /* Fill in our driver capabilities */
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181 SDL_CDcaps.Name = SDL_SYS_CDName;
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182 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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183 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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184 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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185 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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186 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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187 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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188 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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189 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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190 SDL_CDcaps.Close = SDL_SYS_CDClose;
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191
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192 /* Look in the environment for our CD-ROM drive list */
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193 SDLcdrom = getenv("SDL_CDROM"); /* ':' separated list of devices */
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194 if ( SDLcdrom != NULL ) {
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195 char *cdpath, *delim;
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196 cdpath = malloc(strlen(SDLcdrom)+1);
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197 if ( cdpath != NULL ) {
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198 strcpy(cdpath, SDLcdrom);
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199 SDLcdrom = cdpath;
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200 do {
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201 delim = strchr(SDLcdrom, ':');
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202 if ( delim ) {
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203 *delim++ = '\0';
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204 }
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205 if ( CheckDrive(SDLcdrom) > 0 ) {
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206 AddDrive(SDLcdrom);
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207 }
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208 if ( delim ) {
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209 SDLcdrom = delim;
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210 } else {
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211 SDLcdrom = NULL;
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212 }
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213 } while ( SDLcdrom );
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214 free(cdpath);
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215 }
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216
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217 /* If we found our drives, there's nothing left to do */
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218 if ( SDL_numcds > 0 ) {
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219 return(0);
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220 }
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221 }
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222
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223 /* Scan the system for CD-ROM drives */
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224 raw_fd = open("/dev/disk/ide/rescan", 0);
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225 if ( raw_fd >= 0 ) {
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226 if (ioctl(raw_fd, IDE_GET_DEVICES_INFO, &info) == B_NO_ERROR) {
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227 if ( info.ide_0_master_type == B_CD ) {
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228 AddDrive("/dev/disk/ide/0/master/raw");
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229 }
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230 if ( info.ide_0_slave_type == B_CD ) {
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231 AddDrive("/dev/disk/ide/0/slave/raw");
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232 }
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233 if ( info.ide_1_master_type == B_CD ) {
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234 AddDrive("/dev/disk/ide/1/master/raw");
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235 }
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236 if ( info.ide_1_slave_type == B_CD ) {
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237 AddDrive("/dev/disk/ide/1/slave/raw");
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238 }
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239 }
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240 close(raw_fd);
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241 }
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242 return(0);
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243 }
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244
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245 /* General ioctl() CD-ROM command function */
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246 static int SDL_SYS_CDioctl(int index, int command, void *arg)
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247 {
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248 int okay;
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249 int fd;
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250
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251 okay = 0;
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252 fd = open(SDL_cdlist[index], 0);
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253 if ( fd >= 0 ) {
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254 if ( ioctl(fd, command, arg) == B_NO_ERROR ) {
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255 okay = 1;
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256 }
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257 close(fd);
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258 }
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259 return(okay ? 0 : -1);
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260 }
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261
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262 static const char *SDL_SYS_CDName(int drive)
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263 {
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264 return(SDL_cdlist[drive]);
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265 }
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266
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267 static int SDL_SYS_CDOpen(int drive)
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268 {
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269 return(drive);
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270 }
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271
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272 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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273 {
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274 int i;
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275 scsi_toc toc;
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276
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277 if ( SDL_SYS_CDioctl(cdrom->id, B_SCSI_GET_TOC, &toc) == 0 ) {
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278 cdrom->numtracks = CD_NUMTRACKS(toc);
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279 if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
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280 cdrom->numtracks = SDL_MAX_TRACKS;
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281 }
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282 for ( i=0; i<=cdrom->numtracks; ++i ) {
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283 cdrom->track[i].id = CD_TRACK_N(toc, i);
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284 /* FIXME: How do we tell on BeOS? */
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285 cdrom->track[i].type = SDL_AUDIO_TRACK;
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286 cdrom->track[i].offset = MSF_TO_FRAMES(
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287 CD_TRACK_M(toc, i),
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288 CD_TRACK_S(toc, i),
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289 CD_TRACK_F(toc, i));
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290 cdrom->track[i].length = 0;
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291 if ( i > 0 ) {
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292 cdrom->track[i-1].length =
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293 cdrom->track[i].offset-
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294 cdrom->track[i-1].offset;
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295 }
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296 }
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297 return(0);
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298 } else {
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299 return(-1);
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300 }
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301 }
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302
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303 /* Get CD-ROM status */
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304 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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305 {
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306 CDstatus status;
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307 int fd;
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308 int cur_frame;
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309 scsi_position pos;
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310
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311 fd = open(SDL_cdlist[cdrom->id], 0);
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312 cur_frame = 0;
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313 if ( fd >= 0 ) {
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314 if ( ioctl(fd, B_SCSI_GET_POSITION, &pos) == B_NO_ERROR ) {
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315 cur_frame = MSF_TO_FRAMES(
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316 POS_ABS_M(pos), POS_ABS_S(pos), POS_ABS_F(pos));
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317 }
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318 if ( ! pos.position[1] || (pos.position[1] >= 0x13) ||
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319 ((pos.position[1] == 0x12) && (!pos.position[6])) ) {
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320 status = CD_STOPPED;
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321 } else
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322 if ( pos.position[1] == 0x11 ) {
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323 status = CD_PLAYING;
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324 } else {
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325 status = CD_PAUSED;
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326 }
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327 close(fd);
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328 } else {
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329 status = CD_TRAYEMPTY;
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330 }
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331 if ( position ) {
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332 *position = cur_frame;
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333 }
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334 return(status);
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335 }
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336
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337 /* Start play */
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338 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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339 {
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340 int okay;
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341 int fd;
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342 scsi_play_position pos;
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343
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344 okay = 0;
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345 fd = open(SDL_cdlist[cdrom->id], 0);
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346 if ( fd >= 0 ) {
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347 FRAMES_TO_MSF(start, &pos.start_m, &pos.start_s, &pos.start_f);
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348 FRAMES_TO_MSF(start+length, &pos.end_m, &pos.end_s, &pos.end_f);
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349 if ( ioctl(fd, B_SCSI_PLAY_POSITION, &pos) == B_NO_ERROR ) {
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350 okay = 1;
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351 }
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352 close(fd);
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353 }
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354 return(okay ? 0 : -1);
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355 }
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356
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357 /* Pause play */
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358 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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359 {
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360 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_PAUSE_AUDIO, 0));
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361 }
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362
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363 /* Resume play */
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364 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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365 {
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366 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_RESUME_AUDIO, 0));
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367 }
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368
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369 /* Stop play */
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370 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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371 {
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372 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_STOP_AUDIO, 0));
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373 }
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374
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375 /* Eject the CD-ROM */
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376 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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377 {
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378 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_EJECT, 0));
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379 }
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380
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381 /* Close the CD-ROM handle */
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382 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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383 {
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384 free(cdrom);
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385 }
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386
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387 void SDL_SYS_CDQuit(void)
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388 {
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389 int i;
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390
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391 if ( SDL_numcds > 0 ) {
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392 for ( i=0; i<SDL_numcds; ++i ) {
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393 free(SDL_cdlist[i]);
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394 }
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395 SDL_numcds = 0;
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396 }
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397 }
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398
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