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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_WIN32 |
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25 |
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26 /* Functions for system-level CD-ROM audio control */ |
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27 |
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28 #define WIN32_LEAN_AND_MEAN |
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29 #include <windows.h> |
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30 #include <mmsystem.h> |
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31 |
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32 #include "SDL_cdrom.h" |
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33 #include "../SDL_syscdrom.h" |
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34 |
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35 /* This really broken?? */ |
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36 #define BROKEN_MCI_PAUSE /* Pausing actually stops play -- Doh! */ |
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37 |
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38 /* The maximum number of CD-ROM drives we'll detect (Don't change!) */ |
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39 #define MAX_DRIVES 26 |
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40 |
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41 /* A list of available CD-ROM drives */ |
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42 static char *SDL_cdlist[MAX_DRIVES]; |
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43 static MCIDEVICEID SDL_mciID[MAX_DRIVES]; |
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44 #ifdef BROKEN_MCI_PAUSE |
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45 static int SDL_paused[MAX_DRIVES]; |
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46 #endif |
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47 static int SDL_CD_end_position; |
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48 |
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49 /* The system-dependent CD control functions */ |
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50 static const char *SDL_SYS_CDName(int drive); |
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51 static int SDL_SYS_CDOpen(int drive); |
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52 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); |
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53 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); |
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54 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); |
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55 static int SDL_SYS_CDPause(SDL_CD *cdrom); |
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56 static int SDL_SYS_CDResume(SDL_CD *cdrom); |
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57 static int SDL_SYS_CDStop(SDL_CD *cdrom); |
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58 static int SDL_SYS_CDEject(SDL_CD *cdrom); |
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59 static void SDL_SYS_CDClose(SDL_CD *cdrom); |
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60 |
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61 |
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62 /* Add a CD-ROM drive to our list of valid drives */ |
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63 static void AddDrive(char *drive) |
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64 { |
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65 int i; |
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66 |
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67 if ( SDL_numcds < MAX_DRIVES ) { |
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68 /* Add this drive to our list */ |
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69 i = SDL_numcds; |
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70 SDL_cdlist[i] = SDL_strdup(drive); |
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71 if ( SDL_cdlist[i] == NULL ) { |
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72 SDL_OutOfMemory(); |
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73 return; |
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74 } |
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75 ++SDL_numcds; |
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76 #ifdef CDROM_DEBUG |
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77 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); |
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78 #endif |
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79 } |
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80 } |
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81 |
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82 int SDL_SYS_CDInit(void) |
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83 { |
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84 /* checklist: Drive 'A' - 'Z' */ |
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85 int i; |
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86 char drive[4]; |
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87 |
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88 /* Fill in our driver capabilities */ |
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89 SDL_CDcaps.Name = SDL_SYS_CDName; |
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90 SDL_CDcaps.Open = SDL_SYS_CDOpen; |
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91 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; |
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92 SDL_CDcaps.Status = SDL_SYS_CDStatus; |
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93 SDL_CDcaps.Play = SDL_SYS_CDPlay; |
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94 SDL_CDcaps.Pause = SDL_SYS_CDPause; |
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95 SDL_CDcaps.Resume = SDL_SYS_CDResume; |
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96 SDL_CDcaps.Stop = SDL_SYS_CDStop; |
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97 SDL_CDcaps.Eject = SDL_SYS_CDEject; |
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98 SDL_CDcaps.Close = SDL_SYS_CDClose; |
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99 |
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100 /* Scan the system for CD-ROM drives */ |
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101 for ( i='A'; i<='Z'; ++i ) { |
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102 SDL_snprintf(drive, SDL_arraysize(drive), "%c:\\", i); |
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103 if ( GetDriveType(drive) == DRIVE_CDROM ) { |
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104 AddDrive(drive); |
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105 } |
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106 } |
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107 SDL_memset(SDL_mciID, 0, sizeof(SDL_mciID)); |
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108 return(0); |
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109 } |
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110 |
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111 /* General ioctl() CD-ROM command function */ |
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112 static int SDL_SYS_CDioctl(int id, UINT msg, DWORD flags, void *arg) |
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113 { |
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114 MCIERROR mci_error; |
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115 |
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116 mci_error = mciSendCommand(SDL_mciID[id], msg, flags, (DWORD_PTR)arg); |
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117 if ( mci_error ) { |
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118 char error[256]; |
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119 |
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120 mciGetErrorString(mci_error, error, 256); |
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121 SDL_SetError("mciSendCommand() error: %s", error); |
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122 } |
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123 return(!mci_error ? 0 : -1); |
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124 } |
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125 |
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126 static const char *SDL_SYS_CDName(int drive) |
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127 { |
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128 return(SDL_cdlist[drive]); |
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129 } |
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130 |
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131 static int SDL_SYS_CDOpen(int drive) |
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132 { |
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133 MCI_OPEN_PARMS mci_open; |
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134 MCI_SET_PARMS mci_set; |
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135 char device[3]; |
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136 DWORD flags; |
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137 |
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138 /* Open the requested device */ |
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139 mci_open.lpstrDeviceType = (LPCSTR) MCI_DEVTYPE_CD_AUDIO; |
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140 device[0] = *SDL_cdlist[drive]; |
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141 device[1] = ':'; |
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142 device[2] = '\0'; |
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143 mci_open.lpstrElementName = device; |
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144 flags = |
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145 (MCI_OPEN_TYPE|MCI_OPEN_SHAREABLE|MCI_OPEN_TYPE_ID|MCI_OPEN_ELEMENT); |
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146 if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { |
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147 flags &= ~MCI_OPEN_SHAREABLE; |
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148 if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { |
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149 return(-1); |
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150 } |
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151 } |
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152 SDL_mciID[drive] = mci_open.wDeviceID; |
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153 |
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154 /* Set the minute-second-frame time format */ |
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155 mci_set.dwTimeFormat = MCI_FORMAT_MSF; |
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156 SDL_SYS_CDioctl(drive, MCI_SET, MCI_SET_TIME_FORMAT, &mci_set); |
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157 |
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158 #ifdef BROKEN_MCI_PAUSE |
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159 SDL_paused[drive] = 0; |
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160 #endif |
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161 return(drive); |
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162 } |
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163 |
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164 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) |
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165 { |
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166 MCI_STATUS_PARMS mci_status; |
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167 int i, okay; |
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168 DWORD flags; |
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169 |
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170 okay = 0; |
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171 mci_status.dwItem = MCI_STATUS_NUMBER_OF_TRACKS; |
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172 flags = MCI_STATUS_ITEM | MCI_WAIT; |
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173 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { |
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174 cdrom->numtracks = mci_status.dwReturn; |
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175 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { |
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176 cdrom->numtracks = SDL_MAX_TRACKS; |
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177 } |
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178 /* Read all the track TOC entries */ |
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179 flags = MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT; |
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180 for ( i=0; i<cdrom->numtracks; ++i ) { |
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181 cdrom->track[i].id = i+1; |
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182 mci_status.dwTrack = cdrom->track[i].id; |
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183 #ifdef MCI_CDA_STATUS_TYPE_TRACK |
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184 mci_status.dwItem = MCI_CDA_STATUS_TYPE_TRACK; |
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185 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
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186 &mci_status) < 0 ) { |
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187 break; |
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188 } |
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189 if ( mci_status.dwReturn == MCI_CDA_TRACK_AUDIO ) { |
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190 cdrom->track[i].type = SDL_AUDIO_TRACK; |
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191 } else { |
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192 cdrom->track[i].type = SDL_DATA_TRACK; |
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193 } |
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194 #else |
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195 cdrom->track[i].type = SDL_AUDIO_TRACK; |
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196 #endif |
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197 mci_status.dwItem = MCI_STATUS_POSITION; |
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198 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
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199 &mci_status) < 0 ) { |
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200 break; |
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201 } |
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202 cdrom->track[i].offset = MSF_TO_FRAMES( |
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203 MCI_MSF_MINUTE(mci_status.dwReturn), |
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204 MCI_MSF_SECOND(mci_status.dwReturn), |
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205 MCI_MSF_FRAME(mci_status.dwReturn)); |
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206 cdrom->track[i].length = 0; |
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207 if ( i > 0 ) { |
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208 cdrom->track[i-1].length = |
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209 cdrom->track[i].offset- |
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210 cdrom->track[i-1].offset; |
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211 } |
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212 } |
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213 if ( i == cdrom->numtracks ) { |
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214 mci_status.dwTrack = cdrom->track[i - 1].id; |
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215 mci_status.dwItem = MCI_STATUS_LENGTH; |
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216 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
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217 &mci_status) == 0 ) { |
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218 cdrom->track[i - 1].length = MSF_TO_FRAMES( |
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219 MCI_MSF_MINUTE(mci_status.dwReturn), |
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220 MCI_MSF_SECOND(mci_status.dwReturn), |
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221 MCI_MSF_FRAME(mci_status.dwReturn)); |
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222 /* compute lead-out offset */ |
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223 cdrom->track[i].offset = cdrom->track[i - 1].offset + |
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224 cdrom->track[i - 1].length; |
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225 cdrom->track[i].length = 0; |
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226 okay = 1; |
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227 } |
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228 } |
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229 } |
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230 return(okay ? 0 : -1); |
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231 } |
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232 |
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233 /* Get CD-ROM status */ |
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234 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) |
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235 { |
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236 CDstatus status; |
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237 MCI_STATUS_PARMS mci_status; |
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238 DWORD flags; |
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239 |
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240 flags = MCI_STATUS_ITEM | MCI_WAIT; |
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241 mci_status.dwItem = MCI_STATUS_MODE; |
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242 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) < 0 ) { |
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243 status = CD_ERROR; |
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244 } else { |
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245 switch (mci_status.dwReturn) { |
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246 case MCI_MODE_NOT_READY: |
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247 case MCI_MODE_OPEN: |
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248 status = CD_TRAYEMPTY; |
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249 break; |
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250 case MCI_MODE_STOP: |
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251 #ifdef BROKEN_MCI_PAUSE |
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252 if ( SDL_paused[cdrom->id] ) { |
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253 status = CD_PAUSED; |
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254 } else { |
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255 status = CD_STOPPED; |
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256 } |
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257 #else |
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258 status = CD_STOPPED; |
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259 #endif /* BROKEN_MCI_PAUSE */ |
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260 break; |
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261 case MCI_MODE_PLAY: |
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262 #ifdef BROKEN_MCI_PAUSE |
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263 if ( SDL_paused[cdrom->id] ) { |
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264 status = CD_PAUSED; |
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265 } else { |
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266 status = CD_PLAYING; |
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267 } |
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268 #else |
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269 status = CD_PLAYING; |
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270 #endif /* BROKEN_MCI_PAUSE */ |
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271 break; |
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272 case MCI_MODE_PAUSE: |
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273 status = CD_PAUSED; |
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274 break; |
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275 default: |
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276 status = CD_ERROR; |
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277 break; |
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278 } |
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279 } |
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280 if ( position ) { |
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281 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { |
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282 mci_status.dwItem = MCI_STATUS_POSITION; |
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283 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
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284 &mci_status) == 0 ) { |
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285 *position = MSF_TO_FRAMES( |
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286 MCI_MSF_MINUTE(mci_status.dwReturn), |
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287 MCI_MSF_SECOND(mci_status.dwReturn), |
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288 MCI_MSF_FRAME(mci_status.dwReturn)); |
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289 } else { |
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290 *position = 0; |
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291 } |
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292 } else { |
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293 *position = 0; |
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294 } |
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295 } |
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296 return(status); |
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297 } |
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298 |
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299 /* Start play */ |
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300 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) |
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301 { |
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302 MCI_PLAY_PARMS mci_play; |
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303 int m, s, f; |
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304 DWORD flags; |
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305 |
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306 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; |
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307 mci_play.dwCallback = 0; |
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308 FRAMES_TO_MSF(start, &m, &s, &f); |
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309 mci_play.dwFrom = MCI_MAKE_MSF(m, s, f); |
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310 FRAMES_TO_MSF(start+length, &m, &s, &f); |
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311 mci_play.dwTo = MCI_MAKE_MSF(m, s, f); |
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312 SDL_CD_end_position = mci_play.dwTo; |
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313 return(SDL_SYS_CDioctl(cdrom->id, MCI_PLAY, flags, &mci_play)); |
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314 } |
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315 |
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316 /* Pause play */ |
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317 static int SDL_SYS_CDPause(SDL_CD *cdrom) |
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318 { |
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319 #ifdef BROKEN_MCI_PAUSE |
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320 SDL_paused[cdrom->id] = 1; |
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321 #endif |
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322 return(SDL_SYS_CDioctl(cdrom->id, MCI_PAUSE, MCI_WAIT, NULL)); |
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323 } |
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324 |
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325 /* Resume play */ |
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326 static int SDL_SYS_CDResume(SDL_CD *cdrom) |
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327 { |
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328 #ifdef BROKEN_MCI_PAUSE |
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329 MCI_STATUS_PARMS mci_status; |
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330 int okay; |
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331 int flags; |
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332 |
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333 okay = 0; |
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334 /* Play from the current play position to the end position set earlier */ |
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335 flags = MCI_STATUS_ITEM | MCI_WAIT; |
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336 mci_status.dwItem = MCI_STATUS_POSITION; |
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337 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { |
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338 MCI_PLAY_PARMS mci_play; |
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339 |
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340 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; |
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341 mci_play.dwCallback = 0; |
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342 mci_play.dwFrom = mci_status.dwReturn; |
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343 mci_play.dwTo = SDL_CD_end_position; |
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344 if (SDL_SYS_CDioctl(cdrom->id,MCI_PLAY,flags,&mci_play) == 0) { |
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345 okay = 1; |
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346 SDL_paused[cdrom->id] = 0; |
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347 } |
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348 } |
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349 return(okay ? 0 : -1); |
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350 #else |
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351 return(SDL_SYS_CDioctl(cdrom->id, MCI_RESUME, MCI_WAIT, NULL)); |
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352 #endif /* BROKEN_MCI_PAUSE */ |
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353 } |
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354 |
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355 /* Stop play */ |
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356 static int SDL_SYS_CDStop(SDL_CD *cdrom) |
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357 { |
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358 return(SDL_SYS_CDioctl(cdrom->id, MCI_STOP, MCI_WAIT, NULL)); |
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359 } |
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360 |
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361 /* Eject the CD-ROM */ |
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362 static int SDL_SYS_CDEject(SDL_CD *cdrom) |
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363 { |
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364 return(SDL_SYS_CDioctl(cdrom->id, MCI_SET, MCI_SET_DOOR_OPEN, NULL)); |
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365 } |
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366 |
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367 /* Close the CD-ROM handle */ |
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368 static void SDL_SYS_CDClose(SDL_CD *cdrom) |
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369 { |
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370 SDL_SYS_CDioctl(cdrom->id, MCI_CLOSE, MCI_WAIT, NULL); |
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371 } |
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372 |
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373 void SDL_SYS_CDQuit(void) |
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374 { |
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375 int i; |
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376 |
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377 if ( SDL_numcds > 0 ) { |
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378 for ( i=0; i<SDL_numcds; ++i ) { |
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379 SDL_free(SDL_cdlist[i]); |
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380 } |
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381 SDL_numcds = 0; |
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382 } |
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383 } |
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384 |
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385 #endif /* SDL_CDROM_WIN32 */ |