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2 ><HEAD
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3 ><TITLE
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4 >SDL_BuildAudioCVT</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 1.61
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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="Audio"
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14 HREF="audio.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_AudioCVT"
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17 HREF="sdlaudiocvt.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_ConvertAudio"
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20 HREF="sdlconvertaudio.html"></HEAD
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21 ><BODY
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22 CLASS="REFENTRY"
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23 BGCOLOR="#FFF8DC"
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25 LINK="#0000ee"
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26 VLINK="#551a8b"
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27 ALINK="#ff0000"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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31 WIDTH="100%"
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32 BORDER="0"
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33 CELLPADDING="0"
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34 CELLSPACING="0"
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35 ><TR
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36 ><TH
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37 COLSPAN="3"
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38 ALIGN="center"
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39 >SDL Library Documentation</TH
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40 ></TR
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41 ><TR
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42 ><TD
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43 WIDTH="10%"
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44 ALIGN="left"
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45 VALIGN="bottom"
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46 ><A
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47 HREF="sdlaudiocvt.html"
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48 >Prev</A
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49 ></TD
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50 ><TD
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51 WIDTH="80%"
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52 ALIGN="center"
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53 VALIGN="bottom"
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54 ></TD
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55 ><TD
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56 WIDTH="10%"
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57 ALIGN="right"
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58 VALIGN="bottom"
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59 ><A
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60 HREF="sdlconvertaudio.html"
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61 >Next</A
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62 ></TD
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63 ></TR
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64 ></TABLE
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65 ><HR
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66 ALIGN="LEFT"
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67 WIDTH="100%"></DIV
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68 ><H1
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69 ><A
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70 NAME="SDLBUILDAUDIOCVT"
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71 >SDL_BuildAudioCVT</A
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72 ></H1
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73 ><DIV
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74 CLASS="REFNAMEDIV"
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75 ><A
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76 NAME="AEN6380"
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77 ></A
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78 ><H2
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79 >Name</H2
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80 >SDL_BuildAudioCVT -- Initializes a SDL_AudioCVT structure for conversion</DIV
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81 ><DIV
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82 CLASS="REFSYNOPSISDIV"
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83 ><A
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84 NAME="AEN6383"
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85 ></A
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86 ><H2
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87 >Synopsis</H2
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88 ><DIV
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89 CLASS="FUNCSYNOPSIS"
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90 ><A
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91 NAME="AEN6384"
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92 ></A
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93 ><P
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94 ></P
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95 ><PRE
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96 CLASS="FUNCSYNOPSISINFO"
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97 >#include "SDL.h"</PRE
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98 ><P
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99 ><CODE
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100 ><CODE
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101 CLASS="FUNCDEF"
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102 >int <B
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103 CLASS="FSFUNC"
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104 >SDL_BuildAudioCVT</B
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105 ></CODE
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106 >(SDL_AudioCVT *cvt, Uint16 src_format, Uint8 src_channels, int src_rate, Uint16 dst_format, Uint8 dst_channels, int dst_rate);</CODE
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107 ></P
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108 ><P
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109 ></P
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110 ></DIV
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111 ></DIV
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112 ><DIV
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113 CLASS="REFSECT1"
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114 ><A
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115 NAME="AEN6390"
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116 ></A
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117 ><H2
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118 >Description</H2
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119 ><P
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120 >Before an <A
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121 HREF="sdlaudiocvt.html"
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122 ><SPAN
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123 CLASS="STRUCTNAME"
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124 >SDL_AudioCVT</SPAN
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125 ></A
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126 > structure can be used to convert audio data it must be initialized with source and destination information. </P
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127 ><P
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128 ><TT
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129 CLASS="PARAMETER"
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130 ><I
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131 >src_format</I
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132 ></TT
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133 > and <TT
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134 CLASS="PARAMETER"
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135 ><I
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136 >dst_format</I
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137 ></TT
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138 > are the source and destination format of the conversion. (For information on audio formats see <A
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139 HREF="sdlaudiospec.html"
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140 ><SPAN
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141 CLASS="STRUCTNAME"
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142 > SDL_AudioSpec</SPAN
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143 ></A
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144 >). <TT
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145 CLASS="PARAMETER"
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146 ><I
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147 >src_channels</I
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148 ></TT
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149 > and <TT
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150 CLASS="PARAMETER"
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151 ><I
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152 >dst_channels</I
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153 ></TT
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154 > are the number of channels in the source and destination formats. Finally, <TT
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155 CLASS="PARAMETER"
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156 ><I
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157 >src_rate</I
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158 ></TT
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159 > and <TT
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160 CLASS="PARAMETER"
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161 ><I
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162 >dst_rate</I
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163 ></TT
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164 > are the frequency or samples-per-second of the source and destination formats. Once again, see <A
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165 HREF="sdlaudiospec.html"
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166 ><SPAN
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167 CLASS="STRUCTNAME"
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168 >SDL_AudioSpec</SPAN
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169 ></A
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170 >.</P
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171 ></DIV
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172 ><DIV
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173 CLASS="REFSECT1"
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174 ><A
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175 NAME="AEN6406"
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176 ></A
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177 ><H2
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178 >Return Values</H2
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179 ><P
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180 >Returns <SPAN
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181 CLASS="RETURNVALUE"
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182 >-1</SPAN
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183 > if the filter could not be built or 1 if it could.</P
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184 ></DIV
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185 ><DIV
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186 CLASS="REFSECT1"
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187 ><A
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188 NAME="AEN6410"
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189 ></A
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190 ><H2
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191 >Examples</H2
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192 ><P
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193 >See <A
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194 HREF="sdlconvertaudio.html"
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195 ><TT
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196 CLASS="FUNCTION"
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197 >SDL_ConvertAudio</TT
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198 ></A
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199 >.</P
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200 ></DIV
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201 ><DIV
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202 CLASS="REFSECT1"
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203 ><A
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204 NAME="AEN6415"
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205 ></A
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206 ><H2
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207 >See Also</H2
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208 ><P
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209 ><A
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210 HREF="sdlconvertaudio.html"
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211 ><TT
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212 CLASS="FUNCTION"
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213 >SDL_ConvertAudio</TT
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214 ></A
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215 >,
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216 <A
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217 HREF="sdlaudiocvt.html"
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218 ><TT
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219 CLASS="FUNCTION"
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220 >SDL_AudioCVT</TT
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221 ></A
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222 ></P
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223 ></DIV
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224 ><DIV
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225 CLASS="NAVFOOTER"
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226 ><HR
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227 ALIGN="LEFT"
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228 WIDTH="100%"><TABLE
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231 CELLPADDING="0"
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233 ><TR
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234 ><TD
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235 WIDTH="33%"
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236 ALIGN="left"
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237 VALIGN="top"
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238 ><A
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239 HREF="sdlaudiocvt.html"
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240 >Prev</A
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241 ></TD
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242 ><TD
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243 WIDTH="34%"
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244 ALIGN="center"
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245 VALIGN="top"
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246 ><A
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247 HREF="index.html"
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248 >Home</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 ><A
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255 HREF="sdlconvertaudio.html"
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256 >Next</A
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257 ></TD
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258 ></TR
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259 ><TR
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260 ><TD
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261 WIDTH="33%"
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262 ALIGN="left"
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263 VALIGN="top"
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264 >SDL_AudioCVT</TD
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265 ><TD
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266 WIDTH="34%"
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267 ALIGN="center"
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268 VALIGN="top"
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269 ><A
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270 HREF="audio.html"
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271 >Up</A
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272 ></TD
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274 WIDTH="33%"
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275 ALIGN="right"
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276 VALIGN="top"
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277 >SDL_ConvertAudio</TD
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278 ></TR
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279 ></TABLE
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281 ></BODY
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