Mercurial > sdl-ios-xcode
annotate src/cdrom/macosx/AudioFilePlayer.c @ 1793:4d66375c2012
Date: Mon, 8 May 2006 14:19:30 -0700
From: Bob Ippolito
Subject: SDL trunk (r2346) and Mac OS X
As for all the Carbon warnings.. the two File Manager ones should be
easy to get rid of, the QuickDraw ones won't be so easy since that
requires actual refactoring.
PBUnmountVol -> FSEjectVolumeSync
FSClose -> FSCloseFork
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 09 May 2006 07:52:04 +0000 |
parents | dc6b59e925a2 |
children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 This file based on Apple sample code. We haven't changed the file name, |
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23 so if you want to see the original search for it on apple.com/developer |
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24 */ |
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25 #include "SDL_config.h" |
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26 |
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27 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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28 AudioFilePlayer.cpp |
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29 */ |
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30 #include "AudioFilePlayer.h" |
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31 |
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32 /* |
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33 void ThrowResult (OSStatus result, const char* str) |
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34 { |
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35 SDL_SetError ("Error: %s %d", str, result); |
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36 throw result; |
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37 } |
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38 */ |
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39 |
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40 #if DEBUG |
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41 static void PrintStreamDesc (AudioStreamBasicDescription *inDesc) |
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42 { |
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43 if (!inDesc) { |
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44 printf ("Can't print a NULL desc!\n"); |
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45 return; |
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46 } |
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47 |
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48 printf ("- - - - - - - - - - - - - - - - - - - -\n"); |
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49 printf (" Sample Rate:%f\n", inDesc->mSampleRate); |
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50 printf (" Format ID:%s\n", (char*)&inDesc->mFormatID); |
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51 printf (" Format Flags:%lX\n", inDesc->mFormatFlags); |
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52 printf (" Bytes per Packet:%ld\n", inDesc->mBytesPerPacket); |
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53 printf (" Frames per Packet:%ld\n", inDesc->mFramesPerPacket); |
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54 printf (" Bytes per Frame:%ld\n", inDesc->mBytesPerFrame); |
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55 printf (" Channels per Frame:%ld\n", inDesc->mChannelsPerFrame); |
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56 printf (" Bits per Channel:%ld\n", inDesc->mBitsPerChannel); |
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57 printf ("- - - - - - - - - - - - - - - - - - - -\n"); |
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58 } |
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59 #endif |
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60 |
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61 |
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62 static int AudioFilePlayer_SetDestination (AudioFilePlayer *afp, AudioUnit *inDestUnit) |
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63 { |
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64 /*if (afp->mConnected) throw static_cast<OSStatus>(-1);*/ /* can't set dest if already engaged */ |
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65 if (afp->mConnected) |
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66 return 0 ; |
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67 |
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68 SDL_memcpy(&afp->mPlayUnit, inDestUnit, sizeof (afp->mPlayUnit)); |
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69 |
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70 OSStatus result = noErr; |
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71 |
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72 |
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73 /* we can "down" cast a component instance to a component */ |
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74 ComponentDescription desc; |
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75 result = GetComponentInfo ((Component)*inDestUnit, &desc, 0, 0, 0); |
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76 if (result) return 0; /*THROW_RESULT("GetComponentInfo")*/ |
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77 |
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78 /* we're going to use this to know which convert routine to call |
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79 a v1 audio unit will have a type of 'aunt' |
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80 a v2 audio unit will have one of several different types. */ |
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81 if (desc.componentType != kAudioUnitComponentType) { |
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82 result = badComponentInstance; |
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83 /*THROW_RESULT("BAD COMPONENT")*/ |
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84 if (result) return 0; |
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85 } |
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86 |
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87 /* Set the input format of the audio unit. */ |
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88 result = AudioUnitSetProperty (*inDestUnit, |
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89 kAudioUnitProperty_StreamFormat, |
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90 kAudioUnitScope_Input, |
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91 0, |
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92 &afp->mFileDescription, |
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93 sizeof (afp->mFileDescription)); |
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94 /*THROW_RESULT("AudioUnitSetProperty")*/ |
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95 if (result) return 0; |
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96 return 1; |
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97 } |
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98 |
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99 static void AudioFilePlayer_SetNotifier(AudioFilePlayer *afp, AudioFilePlayNotifier inNotifier, void *inRefCon) |
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100 { |
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101 afp->mNotifier = inNotifier; |
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102 afp->mRefCon = inRefCon; |
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103 } |
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104 |
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105 static int AudioFilePlayer_IsConnected(AudioFilePlayer *afp) |
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106 { |
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107 return afp->mConnected; |
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108 } |
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109 |
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110 static AudioUnit AudioFilePlayer_GetDestUnit(AudioFilePlayer *afp) |
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111 { |
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112 return afp->mPlayUnit; |
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113 } |
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114 |
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115 static void AudioFilePlayer_Print(AudioFilePlayer *afp) |
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116 { |
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117 #if DEBUG |
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118 printf ("Is Connected:%s\n", (IsConnected() ? "true" : "false")); |
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119 printf ("- - - - - - - - - - - - - - \n"); |
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120 #endif |
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121 } |
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122 |
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123 static void AudioFilePlayer_SetStartFrame (AudioFilePlayer *afp, int frame) |
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124 { |
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125 SInt64 position = frame * 2352; |
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126 |
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127 afp->mStartFrame = frame; |
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128 afp->mAudioFileManager->SetPosition (afp->mAudioFileManager, position); |
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129 } |
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130 |
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131 |
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132 static int AudioFilePlayer_GetCurrentFrame (AudioFilePlayer *afp) |
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133 { |
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134 return afp->mStartFrame + (afp->mAudioFileManager->GetByteCounter(afp->mAudioFileManager) / 2352); |
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135 } |
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136 |
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137 static void AudioFilePlayer_SetStopFrame (AudioFilePlayer *afp, int frame) |
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138 { |
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139 SInt64 position = frame * 2352; |
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140 |
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141 afp->mAudioFileManager->SetEndOfFile (afp->mAudioFileManager, position); |
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142 } |
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143 |
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144 void delete_AudioFilePlayer(AudioFilePlayer *afp) |
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145 { |
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146 if (afp != NULL) |
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147 { |
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148 afp->Disconnect(afp); |
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149 |
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150 if (afp->mAudioFileManager) { |
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151 delete_AudioFileManager(afp->mAudioFileManager); |
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152 afp->mAudioFileManager = 0; |
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153 } |
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154 |
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155 if (afp->mForkRefNum) { |
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156 FSCloseFork (afp->mForkRefNum); |
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157 afp->mForkRefNum = 0; |
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158 } |
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159 SDL_free(afp); |
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160 } |
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161 } |
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162 |
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163 static int AudioFilePlayer_Connect(AudioFilePlayer *afp) |
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164 { |
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165 #if DEBUG |
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166 printf ("Connect:%x, engaged=%d\n", (int)afp->mPlayUnit, (afp->mConnected ? 1 : 0)); |
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167 #endif |
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168 if (!afp->mConnected) |
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169 { |
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170 if (!afp->mAudioFileManager->DoConnect(afp->mAudioFileManager)) |
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171 return 0; |
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172 |
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173 /* set the render callback for the file data to be supplied to the sound converter AU */ |
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174 afp->mInputCallback.inputProc = afp->mAudioFileManager->FileInputProc; |
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175 afp->mInputCallback.inputProcRefCon = afp->mAudioFileManager; |
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176 |
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177 OSStatus result = AudioUnitSetProperty (afp->mPlayUnit, |
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178 kAudioUnitProperty_SetInputCallback, |
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179 kAudioUnitScope_Input, |
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180 0, |
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181 &afp->mInputCallback, |
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182 sizeof(afp->mInputCallback)); |
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183 if (result) return 0; /*THROW_RESULT("AudioUnitSetProperty")*/ |
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184 afp->mConnected = 1; |
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185 } |
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186 |
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187 return 1; |
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188 } |
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189 |
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190 /* warning noted, now please go away ;-) */ |
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191 /* #warning This should redirect the calling of notification code to some other thread */ |
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192 static void AudioFilePlayer_DoNotification (AudioFilePlayer *afp, OSStatus inStatus) |
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193 { |
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194 if (afp->mNotifier) { |
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195 (*afp->mNotifier) (afp->mRefCon, inStatus); |
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196 } else { |
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197 SDL_SetError ("Notification posted with no notifier in place"); |
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198 |
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199 if (inStatus == kAudioFilePlay_FileIsFinished) |
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200 afp->Disconnect(afp); |
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201 else if (inStatus != kAudioFilePlayErr_FilePlayUnderrun) |
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202 afp->Disconnect(afp); |
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203 } |
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204 } |
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205 |
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206 static void AudioFilePlayer_Disconnect (AudioFilePlayer *afp) |
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207 { |
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208 #if DEBUG |
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209 printf ("Disconnect:%x,%ld, engaged=%d\n", (int)afp->mPlayUnit, 0, (afp->mConnected ? 1 : 0)); |
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210 #endif |
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211 if (afp->mConnected) |
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212 { |
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213 afp->mConnected = 0; |
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214 |
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215 afp->mInputCallback.inputProc = 0; |
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216 afp->mInputCallback.inputProcRefCon = 0; |
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217 OSStatus result = AudioUnitSetProperty (afp->mPlayUnit, |
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218 kAudioUnitProperty_SetInputCallback, |
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219 kAudioUnitScope_Input, |
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220 0, |
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221 &afp->mInputCallback, |
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222 sizeof(afp->mInputCallback)); |
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223 if (result) |
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224 SDL_SetError ("AudioUnitSetProperty:RemoveInputCallback:%ld", result); |
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225 |
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226 afp->mAudioFileManager->Disconnect(afp->mAudioFileManager); |
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227 } |
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228 } |
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229 |
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230 typedef struct { |
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231 UInt32 offset; |
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232 UInt32 blockSize; |
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233 } SSNDData; |
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234 |
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235 static int AudioFilePlayer_OpenFile (AudioFilePlayer *afp, const FSRef *inRef, SInt64 *outFileDataSize) |
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236 { |
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237 ContainerChunk chunkHeader; |
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238 ChunkHeader chunk; |
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239 SSNDData ssndData; |
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240 |
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241 OSErr result; |
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242 HFSUniStr255 dfName; |
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243 ByteCount actual; |
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244 SInt64 offset; |
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245 |
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246 /* Open the data fork of the input file */ |
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247 result = FSGetDataForkName(&dfName); |
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248 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): FSGetDataForkName")*/ |
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249 |
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250 result = FSOpenFork(inRef, dfName.length, dfName.unicode, fsRdPerm, &afp->mForkRefNum); |
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251 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): FSOpenFork")*/ |
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252 |
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253 /* Read the file header, and check if it's indeed an AIFC file */ |
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254 result = FSReadFork(afp->mForkRefNum, fsAtMark, 0, sizeof(chunkHeader), &chunkHeader, &actual); |
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255 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): FSReadFork")*/ |
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256 |
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257 if (chunkHeader.ckID != 'FORM') { |
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258 result = -1; |
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259 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): chunk id is not 'FORM'");*/ |
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260 } |
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261 |
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262 if (chunkHeader.formType != 'AIFC') { |
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263 result = -1; |
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264 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): file format is not 'AIFC'");*/ |
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265 } |
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266 |
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267 /* Search for the SSND chunk. We ignore all compression etc. information |
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268 in other chunks. Of course that is kind of evil, but for now we are lazy |
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269 and rely on the cdfs to always give us the same fixed format. |
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270 TODO: Parse the COMM chunk we currently skip to fill in mFileDescription. |
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271 */ |
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272 offset = 0; |
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273 do { |
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274 result = FSReadFork(afp->mForkRefNum, fsFromMark, offset, sizeof(chunk), &chunk, &actual); |
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275 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): FSReadFork")*/ |
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276 |
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277 /* Skip the chunk data */ |
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278 offset = chunk.ckSize; |
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279 } while (chunk.ckID != 'SSND'); |
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280 |
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281 /* Read the header of the SSND chunk. After this, we are positioned right |
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282 at the start of the audio data. */ |
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283 result = FSReadFork(afp->mForkRefNum, fsAtMark, 0, sizeof(ssndData), &ssndData, &actual); |
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284 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): FSReadFork")*/ |
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285 |
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286 result = FSSetForkPosition(afp->mForkRefNum, fsFromMark, ssndData.offset); |
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287 if (result) return 0; /*THROW_RESULT("AudioFilePlayer::OpenFile(): FSSetForkPosition")*/ |
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288 |
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289 /* Data size */ |
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290 *outFileDataSize = chunk.ckSize - ssndData.offset - 8; |
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291 |
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292 /* File format */ |
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293 afp->mFileDescription.mSampleRate = 44100; |
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294 afp->mFileDescription.mFormatID = kAudioFormatLinearPCM; |
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295 afp->mFileDescription.mFormatFlags = kLinearPCMFormatFlagIsPacked | kLinearPCMFormatFlagIsSignedInteger; |
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296 afp->mFileDescription.mBytesPerPacket = 4; |
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297 afp->mFileDescription.mFramesPerPacket = 1; |
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298 afp->mFileDescription.mBytesPerFrame = 4; |
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299 afp->mFileDescription.mChannelsPerFrame = 2; |
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300 afp->mFileDescription.mBitsPerChannel = 16; |
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301 |
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302 return 1; |
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303 } |
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304 |
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305 AudioFilePlayer *new_AudioFilePlayer (const FSRef *inFileRef) |
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306 { |
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307 SInt64 fileDataSize = 0; |
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308 |
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309 AudioFilePlayer *afp = (AudioFilePlayer *) SDL_malloc(sizeof (AudioFilePlayer)); |
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310 if (afp == NULL) |
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311 return NULL; |
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312 SDL_memset(afp, '\0', sizeof (*afp)); |
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313 |
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314 #define SET_AUDIOFILEPLAYER_METHOD(m) afp->m = AudioFilePlayer_##m |
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315 SET_AUDIOFILEPLAYER_METHOD(SetDestination); |
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316 SET_AUDIOFILEPLAYER_METHOD(SetNotifier); |
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317 SET_AUDIOFILEPLAYER_METHOD(SetStartFrame); |
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318 SET_AUDIOFILEPLAYER_METHOD(GetCurrentFrame); |
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319 SET_AUDIOFILEPLAYER_METHOD(SetStopFrame); |
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320 SET_AUDIOFILEPLAYER_METHOD(Connect); |
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321 SET_AUDIOFILEPLAYER_METHOD(Disconnect); |
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322 SET_AUDIOFILEPLAYER_METHOD(DoNotification); |
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323 SET_AUDIOFILEPLAYER_METHOD(IsConnected); |
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324 SET_AUDIOFILEPLAYER_METHOD(GetDestUnit); |
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325 SET_AUDIOFILEPLAYER_METHOD(Print); |
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326 SET_AUDIOFILEPLAYER_METHOD(OpenFile); |
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327 #undef SET_AUDIOFILEPLAYER_METHOD |
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328 |
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329 if (!afp->OpenFile (afp, inFileRef, &fileDataSize)) |
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330 { |
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331 SDL_free(afp); |
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332 return NULL; |
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333 } |
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334 |
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335 /* we want about 4 seconds worth of data for the buffer */ |
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336 int bytesPerSecond = (UInt32) (4 * afp->mFileDescription.mSampleRate * afp->mFileDescription.mBytesPerFrame); |
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337 |
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338 #if DEBUG |
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339 printf("File format:\n"); |
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340 PrintStreamDesc (&afp->mFileDescription); |
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341 #endif |
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342 |
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343 afp->mAudioFileManager = new_AudioFileManager(afp, afp->mForkRefNum, |
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344 fileDataSize, |
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345 bytesPerSecond); |
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346 if (afp->mAudioFileManager == NULL) |
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347 { |
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348 delete_AudioFilePlayer(afp); |
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349 return NULL; |
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350 } |
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351 |
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352 return afp; |
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353 } |
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354 |