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annotate docs/html/cdrom.html @ 3832:ca74a71063ac SDL-ryan-multiple-audio-device

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Paudio driver moved to 1.3 API.
author Ryan C. Gordon <icculus@icculus.org>
date Sat, 07 Oct 2006 20:20:59 +0000
parents 355632dca928
children
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1 <HTML
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2 ><HEAD
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3 ><TITLE
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4 >CD-ROM</TITLE
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5 ><META
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6 NAME="GENERATOR"
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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8 "><LINK
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9 REL="HOME"
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10 TITLE="SDL Library Documentation"
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11 HREF="index.html"><LINK
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12 REL="UP"
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13 TITLE="SDL Reference"
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14 HREF="reference.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_CloseAudio"
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17 HREF="sdlcloseaudio.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_CDNumDrives"
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20 HREF="sdlcdnumdrives.html"><META
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21 NAME="KEYWORD"
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22 CONTENT="cdrom"><META
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23 NAME="KEYWORD"
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24 CONTENT="function"></HEAD
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25 ><BODY
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26 CLASS="CHAPTER"
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27 BGCOLOR="#FFF8DC"
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28 TEXT="#000000"
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29 LINK="#0000ee"
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30 VLINK="#551a8b"
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31 ALINK="#ff0000"
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32 ><DIV
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33 CLASS="NAVHEADER"
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34 ><TABLE
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35 SUMMARY="Header navigation table"
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36 WIDTH="100%"
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37 BORDER="0"
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38 CELLPADDING="0"
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39 CELLSPACING="0"
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40 ><TR
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41 ><TH
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42 COLSPAN="3"
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43 ALIGN="center"
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44 >SDL Library Documentation</TH
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45 ></TR
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46 ><TR
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47 ><TD
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48 WIDTH="10%"
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49 ALIGN="left"
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50 VALIGN="bottom"
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51 ><A
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52 HREF="sdlcloseaudio.html"
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53 ACCESSKEY="P"
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54 >Prev</A
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55 ></TD
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56 ><TD
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57 WIDTH="80%"
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58 ALIGN="center"
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59 VALIGN="bottom"
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60 ></TD
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61 ><TD
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62 WIDTH="10%"
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63 ALIGN="right"
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64 VALIGN="bottom"
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65 ><A
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66 HREF="sdlcdnumdrives.html"
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67 ACCESSKEY="N"
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68 >Next</A
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69 ></TD
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70 ></TR
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71 ></TABLE
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72 ><HR
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73 ALIGN="LEFT"
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74 WIDTH="100%"></DIV
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75 ><DIV
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76 CLASS="CHAPTER"
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77 ><H1
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78 ><A
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79 NAME="CDROM"
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80 ></A
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81 >Chapter 11. CD-ROM</H1
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82 ><DIV
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83 CLASS="TOC"
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84 ><DL
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85 ><DT
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86 ><B
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87 >Table of Contents</B
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88 ></DT
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89 ><DT
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90 ><A
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91 HREF="sdlcdnumdrives.html"
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92 >SDL_CDNumDrives</A
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93 >&nbsp;--&nbsp;Returns the number of CD-ROM drives on the system.</DT
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94 ><DT
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95 ><A
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96 HREF="sdlcdname.html"
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97 >SDL_CDName</A
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98 >&nbsp;--&nbsp;Returns a human-readable, system-dependent identifier for the CD-ROM.</DT
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99 ><DT
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100 ><A
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101 HREF="sdlcdopen.html"
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102 >SDL_CDOpen</A
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103 >&nbsp;--&nbsp;Opens a CD-ROM drive for access.</DT
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104 ><DT
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105 ><A
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106 HREF="sdlcdstatus.html"
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107 >SDL_CDStatus</A
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108 >&nbsp;--&nbsp;Returns the current status of the given drive.</DT
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109 ><DT
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110 ><A
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111 HREF="sdlcdplay.html"
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112 >SDL_CDPlay</A
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113 >&nbsp;--&nbsp;Play a CD</DT
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114 ><DT
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115 ><A
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116 HREF="sdlcdplaytracks.html"
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117 >SDL_CDPlayTracks</A
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118 >&nbsp;--&nbsp;Play the given CD track(s)</DT
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119 ><DT
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120 ><A
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121 HREF="sdlcdpause.html"
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122 >SDL_CDPause</A
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123 >&nbsp;--&nbsp;Pauses a CDROM</DT
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124 ><DT
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125 ><A
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126 HREF="sdlcdresume.html"
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127 >SDL_CDResume</A
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128 >&nbsp;--&nbsp;Resumes a CDROM</DT
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129 ><DT
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130 ><A
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131 HREF="sdlcdstop.html"
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132 >SDL_CDStop</A
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133 >&nbsp;--&nbsp;Stops a CDROM</DT
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134 ><DT
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135 ><A
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136 HREF="sdlcdeject.html"
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137 >SDL_CDEject</A
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138 >&nbsp;--&nbsp;Ejects a CDROM</DT
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139 ><DT
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140 ><A
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141 HREF="sdlcdclose.html"
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142 >SDL_CDClose</A
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143 >&nbsp;--&nbsp;Closes a SDL_CD handle</DT
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144 ><DT
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145 ><A
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146 HREF="sdlcd.html"
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147 >SDL_CD</A
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148 >&nbsp;--&nbsp;CDROM Drive Information</DT
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149 ><DT
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150 ><A
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151 HREF="sdlcdtrack.html"
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152 >SDL_CDtrack</A
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153 >&nbsp;--&nbsp;CD Track Information Structure</DT
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154 ></DL
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155 ></DIV
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156 ><P
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157 >SDL supports audio control of up to 32 local CD-ROM drives at once.</P
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158 ><P
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159 >You use this API to perform all the basic functions of a CD player,
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160 including listing the tracks, playing, stopping, and ejecting the CD-ROM.
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161 (Currently, multi-changer CD drives are not supported.)</P
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162 ><P
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163 >Before you call any of the SDL CD-ROM functions, you must first call
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164 "<TT
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165 CLASS="FUNCTION"
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166 >SDL_Init(SDL_INIT_CDROM)</TT
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167 >", which scans the system for
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168 CD-ROM drives, and sets the program up for audio control. Check the
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169 return code, which should be <SPAN
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170 CLASS="RETURNVALUE"
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171 >0</SPAN
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172 >, to see if there
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173 were any errors in starting up.</P
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174 ><P
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175 >After you have initialized the library, you can find out how many drives
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176 are available using the <TT
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177 CLASS="FUNCTION"
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178 >SDL_CDNumDrives()</TT
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179 > function.
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180 The first drive listed is the system default CD-ROM drive. After you have
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181 chosen a drive, and have opened it with <TT
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182 CLASS="FUNCTION"
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183 >SDL_CDOpen()</TT
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184 >,
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185 you can check the status and start playing if there's a CD in the drive.</P
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186 ><P
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187 >A CD-ROM is organized into one or more tracks, each consisting of a certain
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188 number of "frames". Each frame is ~2K in size, and at normal playing speed,
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189 a CD plays 75 frames per second. SDL works with the number of frames on a
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190 CD, but this can easily be converted to the more familiar minutes/seconds
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191 format by using the <TT
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192 CLASS="FUNCTION"
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193 >FRAMES_TO_MSF()</TT
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194 > macro.</P
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195 ></DIV
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196 ><DIV
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197 CLASS="NAVFOOTER"
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198 ><HR
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199 ALIGN="LEFT"
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200 WIDTH="100%"><TABLE
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201 SUMMARY="Footer navigation table"
0
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202 WIDTH="100%"
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203 BORDER="0"
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204 CELLPADDING="0"
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205 CELLSPACING="0"
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206 ><TR
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207 ><TD
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208 WIDTH="33%"
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209 ALIGN="left"
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210 VALIGN="top"
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211 ><A
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212 HREF="sdlcloseaudio.html"
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213 ACCESSKEY="P"
0
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214 >Prev</A
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215 ></TD
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216 ><TD
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217 WIDTH="34%"
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218 ALIGN="center"
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219 VALIGN="top"
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220 ><A
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221 HREF="index.html"
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222 ACCESSKEY="H"
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223 >Home</A
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224 ></TD
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225 ><TD
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226 WIDTH="33%"
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227 ALIGN="right"
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228 VALIGN="top"
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229 ><A
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230 HREF="sdlcdnumdrives.html"
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231 ACCESSKEY="N"
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232 >Next</A
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233 ></TD
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234 ></TR
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235 ><TR
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236 ><TD
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237 WIDTH="33%"
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238 ALIGN="left"
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239 VALIGN="top"
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240 >SDL_CloseAudio</TD
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241 ><TD
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242 WIDTH="34%"
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243 ALIGN="center"
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244 VALIGN="top"
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245 ><A
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246 HREF="reference.html"
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247 ACCESSKEY="U"
0
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248 >Up</A
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249 ></TD
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250 ><TD
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251 WIDTH="33%"
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252 ALIGN="right"
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253 VALIGN="top"
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254 >SDL_CDNumDrives</TD
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255 ></TR
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256 ></TABLE
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257 ></DIV
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258 ></BODY
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259 ></HTML
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260 >