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1190
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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@libsdl.org
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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 */
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29
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30 #define INCL_MCIOS2
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31 #include <os2.h>
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32 #include <os2me.h>
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33 #include <stdio.h>
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34 #include <stdlib.h>
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35 #include <string.h>
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36
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37 #include "SDL_error.h"
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38 #include "SDL_cdrom.h"
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39 #include "SDL_syscdrom.h"
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40
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41 /* Size of MCI result buffer (in bytes) */
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42 #define MCI_CMDRETBUFSIZE 128
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43
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44 /* The maximum number of CD-ROM drives we'll detect */
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45 #define MAX_DRIVES 16
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46
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47 /* A list of available CD-ROM drives */
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48 static char *SDL_cdlist[MAX_DRIVES];
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49 //static dev_t SDL_cdmode[MAX_DRIVES];
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50
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51 /* The system-dependent CD control functions */
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52 static const char *SDL_SYS_CDName(int drive);
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53 static int SDL_SYS_CDOpen(int drive);
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54 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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55 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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56 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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57 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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58 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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59 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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60 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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61 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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62
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63 /* MCI Timing Functions */
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64 #define MCI_MMTIMEPERSECOND 3000
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65 #define FRAMESFROMMM(mmtime) (((mmtime)*CD_FPS)/MCI_MMTIMEPERSECOND)
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66
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67
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68 /* Ready for MCI CDAudio Devices */
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69 int SDL_SYS_CDInit(void)
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70 {
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71 int i; /* generig counter */
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72 MCI_SYSINFO_PARMS msp; /* Structure to MCI SysInfo parameters */
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73 CHAR SysInfoRet[MCI_CMDRETBUFSIZE]; /* Buffer for MCI Command result */
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74
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75 /* Fill in our driver capabilities */
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76 SDL_CDcaps.Name = SDL_SYS_CDName;
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77 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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78 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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79 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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80 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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81 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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82 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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83 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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84 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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85 SDL_CDcaps.Close = SDL_SYS_CDClose;
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86
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87 /* Get the number of CD ROMs in the System */
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88 /* Clean SysInfo structure */
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89 memset(&msp, 0x00, sizeof(MCI_SYSINFO_PARMS));
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90 /* Prepare structure to Ask Numer of Audio CDs */
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91 msp.usDeviceType = MCI_DEVTYPE_CD_AUDIO; /* CD Audio Type */
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92 msp.pszReturn = (PSZ)&SysInfoRet; /* Return Structure */
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93 msp.ulRetSize = MCI_CMDRETBUFSIZE; /* Size of ret struct */
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94 if (LOUSHORT(mciSendCommand(0,MCI_SYSINFO, MCI_SYSINFO_QUANTITY | MCI_WAIT, (PVOID)&msp, 0)) != MCIERR_SUCCESS) return(CD_ERROR);
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95 SDL_numcds = atoi(SysInfoRet);
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96 if (SDL_numcds > MAX_DRIVES) SDL_numcds = MAX_DRIVES; /* Limit maximum CD number */
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97
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98 /* Get and Add their system name to the SDL_cdlist */
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99 msp.pszReturn = (PSZ)&SysInfoRet; /* Return Structure */
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100 msp.ulRetSize = MCI_CMDRETBUFSIZE; /* Size of ret struct */
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101 msp.usDeviceType = MCI_DEVTYPE_CD_AUDIO; /* CD Audio Type */
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102 for (i=0; i<SDL_numcds; i++)
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103 {
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104 msp.ulNumber = i+1;
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105 mciSendCommand(0,MCI_SYSINFO, MCI_SYSINFO_NAME | MCI_WAIT,&msp, 0);
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106 SDL_cdlist[i] = (char *)malloc(strlen(SysInfoRet)+1);
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107 if ( SDL_cdlist[i] == NULL )
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108 {
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109 SDL_OutOfMemory();
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110 return(-1);
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111 }
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112 strcpy(SDL_cdlist[i], SysInfoRet);
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113 }
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114 return(0);
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115 }
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116
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117 /* Return CDAudio System Dependent Device Name - Ready for MCI*/
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118 static const char *SDL_SYS_CDName(int drive)
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119 {
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120 return(SDL_cdlist[drive]);
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121 }
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122
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123 /* Open CDAudio Device - Ready for MCI */
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124 static int SDL_SYS_CDOpen(int drive)
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125 {
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126 MCI_OPEN_PARMS mop;
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127 MCI_SET_PARMS msp;
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128 MCI_GENERIC_PARMS mgp;
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129
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130 /* Open the device */
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131 mop.hwndCallback = (HWND)NULL; // None
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132 mop.usDeviceID = (USHORT)NULL; // Will be returned.
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133 mop.pszDeviceType = (PSZ)SDL_cdlist[drive]; // CDAudio Device
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134 if (LOUSHORT(mciSendCommand(0,MCI_OPEN,MCI_WAIT,&mop, 0)) != MCIERR_SUCCESS) return(CD_ERROR);
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135 /* Set time format */
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136 msp.hwndCallback = (HWND)NULL; // None
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137 msp.ulTimeFormat = MCI_FORMAT_MSF; // Minute : Second : Frame structure
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138 msp.ulSpeedFormat = (ULONG)NULL; // No change
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139 msp.ulAudio = (ULONG)NULL; // No Channel
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140 msp.ulLevel = (ULONG)NULL; // No Volume
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141 msp.ulOver = (ULONG)NULL; // No Delay
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142 msp.ulItem = (ULONG)NULL; // No item
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143 msp.ulValue = (ULONG)NULL; // No value for item flag
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144 if (LOUSHORT(mciSendCommand(mop.usDeviceID,MCI_SET,MCI_WAIT | MCI_SET_TIME_FORMAT,&msp, 0)) == MCIERR_SUCCESS) return (mop.usDeviceID);
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145 /* Error setting time format? - Close opened device */
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146 mgp.hwndCallback = (HWND)NULL; // None
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147 mciSendCommand(mop.usDeviceID,MCI_CLOSE,MCI_WAIT,&mgp, 0);
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148 return(CD_ERROR);
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149 }
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150
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151 /* Get CD Table Of Contents - Ready for MCI */
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152 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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153 {
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154 MCI_TOC_PARMS mtp;
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155 MCI_STATUS_PARMS msp;
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156 MCI_TOC_REC * mtr;
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157 INT i;
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158
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159 /* Correction because MCI cannot read TOC while CD is playing (it'll stop!) */
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160 if (cdrom->status == CD_PLAYING || cdrom->status == CD_PAUSED) return 0;
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161
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162 /* Get Number of Tracks */
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163 msp.hwndCallback = (HWND)NULL; /* None */
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164 msp.ulReturn = (ULONG)NULL; /* We want this information */
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165 msp.ulItem = MCI_STATUS_NUMBER_OF_TRACKS;
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166 msp.ulValue = (ULONG)NULL; /* No additional information */
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167 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) return(CD_ERROR);
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168 cdrom->numtracks = msp.ulReturn;
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169 if ( cdrom->numtracks > SDL_MAX_TRACKS )
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170 {
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171 cdrom->numtracks = SDL_MAX_TRACKS;
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172 }
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173 /* Alocate space for TOC data */
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174 mtr = (MCI_TOC_REC *)malloc(cdrom->numtracks*sizeof(MCI_TOC_REC));
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175 if ( mtr == NULL )
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176 {
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177 SDL_OutOfMemory();
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178 return(-1);
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179 }
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180 /* Get TOC from CD */
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181 mtp.pBuf = mtr;
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182 mtp.ulBufSize = cdrom->numtracks*sizeof(MCI_TOC_REC);
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183 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_GETTOC,MCI_WAIT,&mtp, 0)) != MCIERR_SUCCESS)
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184 {
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185 SDL_OutOfMemory();
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186 free(mtr);
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187 return(CD_ERROR);
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188 }
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189 /* Fill SDL Tracks Structure */
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190 for (i=0; i<cdrom->numtracks; i++)
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191 {
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192 /* Set Track ID */
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193 cdrom->track[i].id = (mtr+i)->TrackNum;
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194 /* Set Track Type */
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195 msp.hwndCallback = (HWND)NULL; /* None */
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196 msp.ulReturn = (ULONG)NULL; /* We want this information */
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197 msp.ulItem = MCI_CD_STATUS_TRACK_TYPE;
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198 msp.ulValue = (ULONG)((mtr+i)->TrackNum); /* Track Number? */
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199 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_TRACK | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS)
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200 {
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201 free(mtr);
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202 return (CD_ERROR);
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203 }
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204 if (msp.ulReturn==MCI_CD_TRACK_AUDIO) cdrom->track[i].type = SDL_AUDIO_TRACK;
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205 else cdrom->track[i].type = SDL_DATA_TRACK;
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206 /* Set Track Length - values from MCI are in MMTIMEs - 3000 MMTIME = 1 second */
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207 cdrom->track[i].length = FRAMESFROMMM((mtr+i)->ulEndAddr - (mtr+i)->ulStartAddr);
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208 /* Set Track Offset */
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209 cdrom->track[i].offset = FRAMESFROMMM((mtr+i)->ulStartAddr);
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210 }
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211 free(mtr);
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212 return(0);
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213 }
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214
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215
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216 /* Get CD-ROM status - Ready for MCI */
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217 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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218 {
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219 CDstatus status;
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220 MCI_STATUS_PARMS msp;
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221
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222 /* Get Status from MCI */
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223 msp.hwndCallback = (HWND)NULL; /* None */
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224 msp.ulReturn = (ULONG)NULL; /* We want this information */
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225 msp.ulItem = MCI_STATUS_MODE;
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226 msp.ulValue = (ULONG)NULL; /* No additional information */
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227 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) status = CD_ERROR;
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228 else
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229 {
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230 switch(msp.ulReturn)
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231 {
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232 case MCI_MODE_NOT_READY:
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233 status = CD_TRAYEMPTY;
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234 break;
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235 case MCI_MODE_PAUSE:
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236 status = CD_PAUSED;
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237 break;
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238 case MCI_MODE_PLAY:
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239 status = CD_PLAYING;
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240 break;
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241 case MCI_MODE_STOP:
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242 status = CD_STOPPED;
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243 break;
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244 /* These cases should not occour */
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245 case MCI_MODE_RECORD:
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246 case MCI_MODE_SEEK:
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247 default:
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248 status = CD_ERROR;
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249 break;
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250 }
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251 }
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252
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253 /* Determine position */
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254 if (position != NULL) /* The SDL $&$&%# CDROM call sends NULL pointer here! */
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255 {
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256 if ((status == CD_PLAYING) || (status == CD_PAUSED))
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257 {
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258 /* Get Position */
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259 msp.hwndCallback = (HWND)NULL; /* None */
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260 msp.ulReturn = (ULONG)NULL; /* We want this information */
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261 msp.ulItem = MCI_STATUS_POSITION;
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262 msp.ulValue = (ULONG)NULL; /* No additiona info */
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263 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) return (CD_ERROR);
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264 /* Convert from MSF (format selected in the Open process) to Frames (format that will be returned) */
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265 *position = MSF_TO_FRAMES(MSF_MINUTE(msp.ulReturn),MSF_SECOND(msp.ulReturn),MSF_FRAME(msp.ulReturn));
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266 }
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267 else *position = 0;
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268 }
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269 return(status);
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270 }
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271
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272 /* Start play - Ready for MCI */
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273 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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274 {
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275 MCI_GENERIC_PARMS mgp;
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276 MCI_STATUS_PARMS msp;
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277 MCI_PLAY_PARMS mpp;
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278 ULONG min,sec,frm;
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279
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280 /* Start MSF */
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281 FRAMES_TO_MSF(start, &min, &sec, &frm);
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282 MSF_MINUTE(mpp.ulFrom) = min;
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283 MSF_SECOND(mpp.ulFrom) = sec;
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284 MSF_FRAME(mpp.ulFrom) = frm;
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285 /* End MSF */
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286 FRAMES_TO_MSF(start+length, &min, &sec, &frm);
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287 MSF_MINUTE(mpp.ulTo) = min;
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288 MSF_SECOND(mpp.ulTo) = sec;
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289 MSF_FRAME(mpp.ulTo) = frm;
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290 #ifdef DEBUG_CDROM
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291 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
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292 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
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293 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
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294 #endif
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295 /* Verifies if it is paused first... and if it is, unpause before stopping it. */
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296 msp.hwndCallback = (HWND)NULL; /* None */
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297 msp.ulReturn = (ULONG)NULL; /* We want this information */
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298 msp.ulItem = MCI_STATUS_MODE;
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299 msp.ulValue = (ULONG)NULL; /* No additional information */
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300 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) == MCIERR_SUCCESS)
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301 {
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302 if (msp.ulReturn == MCI_MODE_PAUSE)
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303 {
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304 mgp.hwndCallback = (HWND)NULL; // None
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305 mciSendCommand(cdrom->id,MCI_RESUME,NULL,&mgp, 0);
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306 }
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307 }
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308 /* Now play it. */
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309 mpp.hwndCallback = (HWND)NULL; // We do not want the info. temp
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310 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_PLAY,MCI_FROM | MCI_TO,&mpp, 0)) == MCIERR_SUCCESS) return 0;
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311 return (CD_ERROR);
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312 }
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313
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314 /* Pause play - Ready for MCI */
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315 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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316 {
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317 MCI_GENERIC_PARMS mgp;
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318
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319 mgp.hwndCallback = (HWND)NULL; // None
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320 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_PAUSE,MCI_WAIT,&mgp, 0)) == MCIERR_SUCCESS) return 0;
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321 return(CD_ERROR);
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322 }
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323
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324 /* Resume play - Ready for MCI */
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325 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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326 {
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327 MCI_GENERIC_PARMS mgp;
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328
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329 mgp.hwndCallback = (HWND)NULL; // None
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330 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_RESUME,MCI_WAIT,&mgp, 0)) == MCIERR_SUCCESS) return 0;
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331 return(CD_ERROR);
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332 }
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333
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334 /* Stop play - Ready for MCI */
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335 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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336 {
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337 MCI_GENERIC_PARMS mgp;
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338 MCI_STATUS_PARMS msp;
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339
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340 /* Verifies if it is paused first... and if it is, unpause before stopping it. */
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341 msp.hwndCallback = (HWND)NULL; /* None */
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342 msp.ulReturn = (ULONG)NULL; /* We want this information */
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343 msp.ulItem = MCI_STATUS_MODE;
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344 msp.ulValue = (ULONG)NULL; /* No additional information */
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345 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) == MCIERR_SUCCESS)
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346 {
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347 if (msp.ulReturn == MCI_MODE_PAUSE)
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348 {
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349 mgp.hwndCallback = (HWND)NULL; // None
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350 mciSendCommand(cdrom->id,MCI_RESUME,NULL,&mgp, 0);
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351 }
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352 }
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353 /* Now stops the media */
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354 mgp.hwndCallback = (HWND)NULL; // None
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355 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STOP,MCI_WAIT,&mgp, 0)) == MCIERR_SUCCESS) return 0;
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356 return(CD_ERROR);
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357 }
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358
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359 /* Eject the CD-ROM - Ready for MCI */
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360 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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361 {
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362 MCI_SET_PARMS msp;
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363
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364 msp.hwndCallback = (HWND)NULL; // None
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365 msp.ulTimeFormat = (ULONG)NULL; // No change
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366 msp.ulSpeedFormat = (ULONG)NULL; // No change
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367 msp.ulAudio = (ULONG)NULL; // No Channel
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368 msp.ulLevel = (ULONG)NULL; // No Volume
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369 msp.ulOver = (ULONG)NULL; // No Delay
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370 msp.ulItem = (ULONG)NULL; // No item
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371 msp.ulValue = (ULONG)NULL; // No value for item flag
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372 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_SET,MCI_WAIT | MCI_SET_DOOR_OPEN,&msp, 0)) == MCIERR_SUCCESS) return 0;
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373 return(CD_ERROR);
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374 }
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375
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376 /* Close the CD-ROM handle - Ready for MCI */
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377 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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378 {
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379 MCI_GENERIC_PARMS mgp;
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380
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381 mgp.hwndCallback = (HWND)NULL; // None
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382 mciSendCommand(cdrom->id,MCI_CLOSE,MCI_WAIT,&mgp, 0);
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383 }
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384
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385 /* Finalize CDROM Subsystem - Ready for MCI */
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386 void SDL_SYS_CDQuit(void)
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387 {
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388 int i;
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389
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390 if ( SDL_numcds > 0 )
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391 {
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392 for ( i=0; i<SDL_numcds; ++i )
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393 {
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394 free(SDL_cdlist[i]);
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395 }
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396 SDL_numcds = 0;
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397 }
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398 }
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399
|
