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1 /* |
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2 Tru64 audio module for SDL (Simple DirectMedia Layer) |
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3 Copyright (C) 2003 |
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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 |
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20 */ |
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21 #include "SDL_config.h" |
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22 |
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23 #ifdef SDL_CDROM_OSF |
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24 |
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25 /* Functions for system-level CD-ROM audio control */ |
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26 |
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27 /* #define DEBUG_CDROM 1 */ |
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28 |
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29 #include <sys/types.h> |
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30 #include <dirent.h> |
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31 #include <sys/stat.h> |
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32 #include <fcntl.h> |
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33 #include <io/cam/cdrom.h> |
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34 #include <io/cam/rzdisk.h> |
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35 #include <io/common/devgetinfo.h> |
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36 |
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37 #include "SDL_cdrom.h" |
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38 #include "../SDL_syscdrom.h" |
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39 |
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40 /* The maximum number of CD-ROM drives we'll detect */ |
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41 #define MAX_DRIVES 16 |
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42 |
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43 /* A list of available CD-ROM drives */ |
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44 static char *SDL_cdlist[MAX_DRIVES]; |
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45 static dev_t SDL_cdmode[MAX_DRIVES]; |
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46 |
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47 /* The system-dependent CD control functions */ |
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48 static const char *SDL_SYS_CDName(int drive); |
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49 static int SDL_SYS_CDOpen(int drive); |
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50 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); |
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51 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); |
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52 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); |
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53 static int SDL_SYS_CDPause(SDL_CD *cdrom); |
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54 static int SDL_SYS_CDResume(SDL_CD *cdrom); |
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55 static int SDL_SYS_CDStop(SDL_CD *cdrom); |
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56 static int SDL_SYS_CDEject(SDL_CD *cdrom); |
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57 static void SDL_SYS_CDClose(SDL_CD *cdrom); |
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58 |
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59 /* Check a drive to see if it is a CD-ROM */ |
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60 /* Caution!! Not tested. */ |
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61 static int CheckDrive(char *drive, struct stat *stbuf) |
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62 { |
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63 int cdfd, is_cd = 0; |
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64 struct mode_sel_sns_params msp; |
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65 struct inquiry_info inq; |
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66 |
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67 #ifdef DEBUG_CDROM |
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68 char *devtype[] = {"Disk", "Tape", "Printer", "Processor", "WORM", |
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69 "CD-ROM", "Scanner", "Optical", "Changer", "Comm", "Unknown"}; |
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70 #endif |
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71 |
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72 bzero(&msp, sizeof(msp)); |
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73 bzero(&inq, sizeof(inq)); |
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74 |
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75 /* If it doesn't exist, return -1 */ |
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76 if ( stat(drive, stbuf) < 0 ) { |
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77 return(-1); |
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78 } |
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79 |
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80 if ( (cdfd = open(drive, (O_RDWR|O_NDELAY), 0)) >= 0 ) { |
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81 msp.msp_addr = (caddr_t) &inq; |
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82 msp.msp_pgcode = 0; |
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83 msp.msp_pgctrl = 0; |
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84 msp.msp_length = sizeof(inq); |
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85 msp.msp_setps = 0; |
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86 |
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87 if ( ioctl(cdfd, SCSI_GET_INQUIRY_DATA, &msp) ) |
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88 return (0); |
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89 |
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90 #ifdef DEBUG_CDROM |
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91 fprintf(stderr, "Device Type: %s\n", devtype[inq.perfdt]); |
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92 fprintf(stderr, "Vendor: %.8s\n", inq.vndrid); |
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93 fprintf(stderr, "Product: %.8s\n", inq.prodid); |
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94 fprintf(stderr, "Revision: %.8s\n", inq.revlvl); |
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95 #endif |
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96 if ( inq.perfdt == DTYPE_RODIRECT ) |
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97 is_cd = 1; |
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98 } |
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99 |
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100 return(is_cd); |
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101 } |
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102 |
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103 /* Add a CD-ROM drive to our list of valid drives */ |
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104 static void AddDrive(char *drive, struct stat *stbuf) |
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105 { |
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106 int i; |
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107 |
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108 if ( SDL_numcds < MAX_DRIVES ) { |
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109 /* Check to make sure it's not already in our list. |
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110 * This can happen when we see a drive via symbolic link. |
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111 * |
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112 */ |
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113 for ( i=0; i<SDL_numcds; ++i ) { |
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114 if ( stbuf->st_rdev == SDL_cdmode[i] ) { |
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115 #ifdef DEBUG_CDROM |
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116 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); |
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117 #endif |
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118 return; |
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119 } |
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120 } |
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121 |
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122 /* Add this drive to our list */ |
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123 i = SDL_numcds; |
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124 SDL_cdlist[i] = SDL_strdup(drive); |
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125 if ( SDL_cdlist[i] == NULL ) { |
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126 SDL_OutOfMemory(); |
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127 return; |
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128 } |
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129 SDL_cdmode[i] = stbuf->st_rdev; |
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130 ++SDL_numcds; |
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131 #ifdef DEBUG_CDROM |
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132 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); |
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133 #endif |
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134 } |
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135 } |
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136 |
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137 int SDL_SYS_CDInit(void) |
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138 { |
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139 /* checklist: |
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140 * |
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141 * Tru64 5.X (/dev/rdisk/cdrom?c) |
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142 * dir: /dev/rdisk, name: cdrom |
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143 * |
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144 * Digital UNIX 4.0X (/dev/rrz?c) |
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145 * dir: /dev, name: rrz |
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146 * |
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147 */ |
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148 struct { |
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149 char *dir; |
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150 char *name; |
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151 } checklist[] = { |
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152 {"/dev/rdisk", "cdrom"}, |
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153 {"/dev", "rrz"}, |
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154 {NULL, NULL}}; |
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155 char drive[32]; |
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156 char *SDLcdrom; |
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157 int i, j, exists; |
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158 struct stat stbuf; |
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159 |
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160 /* Fill in our driver capabilities */ |
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161 SDL_CDcaps.Name = SDL_SYS_CDName; |
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162 SDL_CDcaps.Open = SDL_SYS_CDOpen; |
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163 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; |
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164 SDL_CDcaps.Status = SDL_SYS_CDStatus; |
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165 SDL_CDcaps.Play = SDL_SYS_CDPlay; |
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166 SDL_CDcaps.Pause = SDL_SYS_CDPause; |
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167 SDL_CDcaps.Resume = SDL_SYS_CDResume; |
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168 SDL_CDcaps.Stop = SDL_SYS_CDStop; |
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169 SDL_CDcaps.Eject = SDL_SYS_CDEject; |
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170 SDL_CDcaps.Close = SDL_SYS_CDClose; |
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171 |
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172 |
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173 /* Look in the environment for our CD-ROM drive list */ |
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174 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ |
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175 if ( SDLcdrom != NULL ) { |
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176 char *cdpath, *delim; |
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177 size_t len = SDL_strlen(SDLcdrom)+1; |
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178 cdpath = SDL_stack_alloc(char, len); |
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179 if ( cdpath != NULL ) { |
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180 SDL_strlcpy(cdpath, SDLcdrom, len); |
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181 SDLcdrom = cdpath; |
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182 do { |
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183 delim = SDL_strchr(SDLcdrom, ':'); |
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184 if ( delim ) { |
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185 *delim++ = '\0'; |
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186 } |
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187 if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) { |
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188 AddDrive(SDLcdrom, &stbuf); |
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189 } |
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190 if ( delim ) { |
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191 SDLcdrom = delim; |
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192 } else { |
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193 SDLcdrom = NULL; |
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194 } |
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195 } while ( SDLcdrom ); |
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196 SDL_stack_free(cdpath); |
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197 } |
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198 |
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199 /* If we found our drives, there's nothing left to do */ |
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200 if ( SDL_numcds > 0 ) { |
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201 return(0); |
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202 } |
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203 } |
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204 /* Scan the system for CD-ROM drives */ |
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205 for ( i = 0; checklist[i].dir; ++i) { |
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206 DIR *devdir; |
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207 struct dirent *devent; |
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208 int name_len; |
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209 |
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210 devdir = opendir(checklist[i].dir); |
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211 if (devdir) { |
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212 name_len = SDL_strlen(checklist[i].name); |
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213 while (devent = readdir(devdir)) |
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214 if (SDL_memcmp(checklist[i].name, devent->d_name, name_len) == 0) |
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215 if (devent->d_name[devent->d_namlen-1] == 'c') { |
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216 SDL_snprintf(drive, SDL_arraysize(drive), "%s/%s", checklist[i].dir, devent->d_name); |
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217 #ifdef DEBUG_CDROM |
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218 fprintf(stderr, "Try to add drive: %s\n", drive); |
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219 #endif |
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220 if ( CheckDrive(drive, &stbuf) > 0 ) |
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221 AddDrive(drive, &stbuf); |
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222 } |
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223 closedir(devdir); |
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224 } else { |
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225 #ifdef DEBUG_CDROM |
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226 fprintf(stderr, "cannot open dir: %s\n", checklist[i].dir); |
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227 #endif |
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228 } |
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229 } |
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230 return (0); |
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231 } |
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232 |
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233 static const char *SDL_SYS_CDName(int drive) |
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234 { |
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235 return(SDL_cdlist[drive]); |
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236 } |
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237 |
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238 static int SDL_SYS_CDOpen(int drive) |
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239 { |
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240 /* O_RDWR: To use ioctl(fd, SCSI_STOP_UNIT) */ |
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241 return(open(SDL_cdlist[drive], (O_RDWR|O_NDELAY), 0)); |
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242 } |
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243 |
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244 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) |
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245 { |
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246 struct cd_toc toc; |
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247 struct cd_toc_header hdr; |
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248 struct cd_toc_entry *cdte; |
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249 int i; |
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250 int okay = 0; |
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251 if ( ioctl(cdrom->id, CDROM_TOC_HEADER, &hdr) ) { |
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252 fprintf(stderr,"ioctl error CDROM_TOC_HEADER\n"); |
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253 return -1; |
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254 } |
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255 cdrom->numtracks = hdr.th_ending_track - hdr.th_starting_track + 1; |
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256 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { |
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257 cdrom->numtracks = SDL_MAX_TRACKS; |
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258 } |
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259 #ifdef DEBUG_CDROM |
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260 fprintf(stderr,"hdr.th_data_len1 = %d\n", hdr.th_data_len1); |
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261 fprintf(stderr,"hdr.th_data_len0 = %d\n", hdr.th_data_len0); |
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262 fprintf(stderr,"hdr.th_starting_track = %d\n", hdr.th_starting_track); |
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263 fprintf(stderr,"hdr.th_ending_track = %d\n", hdr.th_ending_track); |
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264 fprintf(stderr,"cdrom->numtracks = %d\n", cdrom->numtracks); |
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265 #endif |
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266 toc.toc_address_format = CDROM_LBA_FORMAT; |
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267 toc.toc_starting_track = 0; |
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268 toc.toc_alloc_length = (hdr.th_data_len1 << 8) + |
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269 hdr.th_data_len0 + sizeof(hdr); |
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270 if ( (toc.toc_buffer = alloca(toc.toc_alloc_length)) == NULL) { |
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271 fprintf(stderr,"cannot allocate toc.toc_buffer\n"); |
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272 return -1; |
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273 } |
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274 |
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275 bzero (toc.toc_buffer, toc.toc_alloc_length); |
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276 if (ioctl(cdrom->id, CDROM_TOC_ENTRYS, &toc)) { |
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277 fprintf(stderr,"ioctl error CDROM_TOC_ENTRYS\n"); |
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278 return -1; |
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279 } |
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280 |
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281 cdte =(struct cd_toc_entry *) ((char *) toc.toc_buffer + sizeof(hdr)); |
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282 for (i=0; i <= cdrom->numtracks; ++i) { |
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283 if (i == cdrom->numtracks ) { |
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284 cdrom->track[i].id = 0xAA;; |
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285 } else { |
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286 cdrom->track[i].id = hdr.th_starting_track + i; |
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287 } |
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288 |
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289 cdrom->track[i].type = |
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290 cdte[i].te_control & CDROM_DATA_TRACK; |
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291 cdrom->track[i].offset = |
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292 cdte[i].te_absaddr.lba.addr3 << 24 | |
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293 cdte[i].te_absaddr.lba.addr2 << 16 | |
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294 cdte[i].te_absaddr.lba.addr1 << 8 | |
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295 cdte[i].te_absaddr.lba.addr0; |
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296 cdrom->track[i].length = 0; |
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297 if ( i > 0 ) { |
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298 cdrom->track[i - 1].length = |
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299 cdrom->track[i].offset - |
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300 cdrom->track[i - 1].offset; |
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301 } |
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302 } |
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303 #ifdef DEBUG_CDROM |
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304 for (i = 0; i <= cdrom->numtracks; i++) { |
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305 fprintf(stderr,"toc_entry[%d].te_track_number = %d\n", |
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306 i,cdte[i].te_track_number); |
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307 fprintf(stderr,"cdrom->track[%d].id = %d\n", i,cdrom->track[i].id); |
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308 fprintf(stderr,"cdrom->track[%d].type = %x\n", i,cdrom->track[i].type); |
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309 fprintf(stderr,"cdrom->track[%d].offset = %d\n", i,cdrom->track[i].offset); |
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310 fprintf(stderr,"cdrom->track[%d].length = %d\n", i,cdrom->track[i].length); |
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311 } |
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312 #endif |
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313 if ( i == (cdrom->numtracks+1) ) { |
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314 okay = 1; |
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315 } |
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316 |
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317 return(okay ? 0 : -1); |
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318 } |
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319 |
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320 /* Get CD-ROM status */ |
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321 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) |
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322 { |
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323 CDstatus status; |
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324 struct cd_sub_channel sc; |
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325 struct cd_subc_channel_data scd; |
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326 |
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327 sc.sch_address_format = CDROM_LBA_FORMAT; |
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328 sc.sch_data_format = CDROM_CURRENT_POSITION; |
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329 sc.sch_track_number = 0; |
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330 sc.sch_alloc_length = sizeof(scd); |
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331 sc.sch_buffer = (caddr_t)&scd; |
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332 if ( ioctl(cdrom->id, CDROM_READ_SUBCHANNEL, &sc) ) { |
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333 status = CD_ERROR; |
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334 fprintf(stderr,"ioctl error CDROM_READ_SUBCHANNEL \n"); |
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335 } else { |
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336 switch (scd.scd_header.sh_audio_status) { |
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337 case AS_AUDIO_INVALID: |
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338 status = CD_STOPPED; |
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339 break; |
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340 case AS_PLAY_IN_PROGRESS: |
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341 status = CD_PLAYING; |
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342 break; |
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343 case AS_PLAY_PAUSED: |
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344 status = CD_PAUSED; |
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345 break; |
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346 case AS_PLAY_COMPLETED: |
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347 status = CD_STOPPED; |
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348 break; |
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349 case AS_PLAY_ERROR: |
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350 status = CD_ERROR; |
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351 break; |
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352 case AS_NO_STATUS: |
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353 status = CD_STOPPED; |
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354 break; |
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355 default: |
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356 status = CD_ERROR; |
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357 break; |
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358 } |
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359 #ifdef DEBUG_CDROM |
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360 fprintf(stderr,"scd.scd_header.sh_audio_status = %x\n", |
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361 scd.scd_header.sh_audio_status); |
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362 #endif |
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363 } |
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364 if (position) { |
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365 if (status == CD_PLAYING || (status == CD_PAUSED) ) { |
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366 *position = |
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367 scd.scd_position_data.scp_absaddr.lba.addr3 << 24 | |
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368 scd.scd_position_data.scp_absaddr.lba.addr2 << 16 | |
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369 scd.scd_position_data.scp_absaddr.lba.addr1 << 8 | |
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370 scd.scd_position_data.scp_absaddr.lba.addr0; |
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371 } else { |
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372 *position = 0; |
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373 } |
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374 } |
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375 |
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376 return status; |
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377 } |
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378 |
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379 /* Start play */ |
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380 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) |
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381 { |
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382 /* |
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383 * Play MSF |
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384 */ |
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385 struct cd_play_audio_msf msf; |
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386 int end; |
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387 |
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388 bzero(&msf, sizeof(msf)); |
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389 end = start +length; |
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390 FRAMES_TO_MSF(start + 150, /* LBA = 4500*M + 75*S + F - 150 */ |
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391 &msf.msf_starting_M_unit, |
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392 &msf.msf_starting_S_unit, |
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393 &msf.msf_starting_F_unit); |
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394 FRAMES_TO_MSF(end + 150, /* LBA = 4500*M + 75*S + F - 150 */ |
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395 &msf.msf_ending_M_unit, |
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396 &msf.msf_ending_S_unit, |
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397 &msf.msf_ending_F_unit); |
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398 |
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399 return(ioctl(cdrom->id, CDROM_PLAY_AUDIO_MSF, &msf)); |
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400 } |
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401 |
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402 /* Pause play */ |
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403 static int SDL_SYS_CDPause(SDL_CD *cdrom) |
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404 { |
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405 return(ioctl(cdrom->id, CDROM_PAUSE_PLAY)); |
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406 } |
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407 |
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408 /* Resume play */ |
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409 static int SDL_SYS_CDResume(SDL_CD *cdrom) |
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410 { |
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411 return(ioctl(cdrom->id, CDROM_RESUME_PLAY)); |
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412 } |
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413 |
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414 /* Stop play */ |
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415 static int SDL_SYS_CDStop(SDL_CD *cdrom) |
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416 { |
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417 return(ioctl(cdrom->id, SCSI_STOP_UNIT)); |
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418 } |
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419 |
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420 /* Eject the CD-ROM */ |
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421 static int SDL_SYS_CDEject(SDL_CD *cdrom) |
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422 { |
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423 return(ioctl(cdrom->id, CDROM_EJECT_CADDY)); |
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424 } |
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425 |
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426 /* Close the CD-ROM handle */ |
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427 static void SDL_SYS_CDClose(SDL_CD *cdrom) |
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428 { |
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429 close(cdrom->id); |
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430 } |
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431 |
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432 void SDL_SYS_CDQuit(void) |
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433 { |
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434 int i; |
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435 |
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436 if ( SDL_numcds > 0 ) { |
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437 for ( i=0; i<SDL_numcds; ++i ) { |
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438 SDL_free(SDL_cdlist[i]); |
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439 } |
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440 SDL_numcds = 0; |
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441 } |
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442 } |
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443 |
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444 #endif /* SDL_CDROM_OSF */ |