Mercurial > sdl-ios-xcode

annotate src/audio/SDL_sysaudio.h @ 3795:589bc3d060cd SDL-ryan-multiple-audio-device

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More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 06:00:10 +0000
parents 2b4795e92b62
children b19680c84cdf
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is SDL_free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_sysaudio_h
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25 #define _SDL_sysaudio_h
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26
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27 #include "SDL_mutex.h"
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28 #include "SDL_thread.h"
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29
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30 /* The SDL audio driver */
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31 typedef struct SDL_AudioDevice SDL_AudioDevice;
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32 #define _THIS SDL_AudioDevice *_this
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33
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34 typedef struct SDL_AudioDriverImpl
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35 {
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36 int (*DetectDevices)(int iscapture);
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37 const char *(*GetDeviceName)(int index, int iscapture);
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38 int (*OpenDevice) (_THIS, const char *devname, int iscapture);
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39 void (*ThreadInit) (_THIS); /* Called by audio thread at start */
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40 void (*WaitDevice) (_THIS);
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41 void (*PlayDevice) (_THIS);
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42 Uint8 *(*GetDeviceBuf) (_THIS);
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43 void (*WaitDone) (_THIS);
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44 void (*CloseDevice) (_THIS);
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45 void (*LockDevice) (_THIS);
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46 void (*UnlockDevice) (_THIS);
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47 void (*Deinitialize) (void);
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48 } SDL_AudioDriverImpl;
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49
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50
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51 typedef struct SDL_AudioDriver
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52 {
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53 /* * * */
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54 /* The name of this audio driver */
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55 const char *name;
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56
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57 /* * * */
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58 /* The description of this audio driver */
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59 const char *desc;
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60
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61 SDL_AudioDriverImpl impl;
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62 } SDL_AudioDriver;
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63
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64
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65 /* Define the SDL audio driver structure */
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66 struct SDL_AudioDevice
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67 {
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68 /* * * */
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69 /* Lowlevel audio implementation */
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70 const SDL_AudioDriver *driver;
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71
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72 /* * * */
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73 /* Data common to all devices */
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74
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75 /* The current audio specification (shared with audio thread) */
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76 SDL_AudioSpec spec;
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77
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78 /* An audio conversion block for audio format emulation */
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79 SDL_AudioCVT convert;
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80
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81 /* Current state flags */
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82 int enabled;
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83 int paused;
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84 int opened;
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85
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86 /* Fake audio buffer for when the audio hardware is busy */
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87 Uint8 *fake_stream;
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88
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89 /* A semaphore for locking the mixing buffers */
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90 SDL_mutex *mixer_lock;
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91
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92 /* A thread to feed the audio device */
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93 SDL_Thread *thread;
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94 Uint32 threadid;
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95
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96 /* * * */
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97 /* Data private to this driver */
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98 struct SDL_PrivateAudioData *hidden;
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99
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100 /* * * */
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101 /* The function used to dispose of this structure */
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102 void (*free) (_THIS);
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103 };
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104 #undef _THIS
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105
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106 typedef struct AudioBootStrap
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107 {
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108 const char *name;
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109 const char *desc;
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110 int (*available) (void);
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111 int (*init) (SDL_AudioDriverImpl *impl);
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112 } AudioBootStrap;
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113
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114 #if SDL_AUDIO_DRIVER_BSD
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115 extern AudioBootStrap BSD_AUDIO_bootstrap;
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116 #endif
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117 #if SDL_AUDIO_DRIVER_OSS
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118 extern AudioBootStrap DSP_bootstrap;
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119 extern AudioBootStrap DMA_bootstrap;
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120 #endif
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121 #if SDL_AUDIO_DRIVER_ALSA
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122 extern AudioBootStrap ALSA_bootstrap;
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123 #endif
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124 #if SDL_AUDIO_DRIVER_QNXNTO
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125 extern AudioBootStrap QNXNTOAUDIO_bootstrap;
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126 #endif
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127 #if SDL_AUDIO_DRIVER_SUNAUDIO
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128 extern AudioBootStrap SUNAUDIO_bootstrap;
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129 #endif
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130 #if SDL_AUDIO_DRIVER_DMEDIA
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131 extern AudioBootStrap DMEDIA_bootstrap;
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132 #endif
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133 #if SDL_AUDIO_DRIVER_ARTS
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134 extern AudioBootStrap ARTS_bootstrap;
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135 #endif
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136 #if SDL_AUDIO_DRIVER_ESD
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137 extern AudioBootStrap ESD_bootstrap;
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138 #endif
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139 #if SDL_AUDIO_DRIVER_NAS
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140 extern AudioBootStrap NAS_bootstrap;
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141 #endif
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142 #if SDL_AUDIO_DRIVER_DSOUND
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143 extern AudioBootStrap DSOUND_bootstrap;
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144 #endif
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145 #if SDL_AUDIO_DRIVER_WAVEOUT
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146 extern AudioBootStrap WAVEOUT_bootstrap;
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147 #endif
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148 #if SDL_AUDIO_DRIVER_PAUD
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149 extern AudioBootStrap Paud_bootstrap;
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150 #endif
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151 #if SDL_AUDIO_DRIVER_BAUDIO
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152 extern AudioBootStrap BAUDIO_bootstrap;
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153 #endif
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154 #if SDL_AUDIO_DRIVER_COREAUDIO
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155 extern AudioBootStrap COREAUDIO_bootstrap;
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156 #endif
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157 #if SDL_AUDIO_DRIVER_SNDMGR
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158 extern AudioBootStrap SNDMGR_bootstrap;
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159 #endif
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160 #if SDL_AUDIO_DRIVER_AHI
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161 extern AudioBootStrap AHI_bootstrap;
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162 #endif
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163 #if SDL_AUDIO_DRIVER_MINT
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164 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
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165 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
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166 extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
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167 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
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168 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
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169 #endif
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170 #if SDL_AUDIO_DRIVER_DISK
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171 extern AudioBootStrap DISKAUD_bootstrap;
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172 #endif
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173 #if SDL_AUDIO_DRIVER_DUMMY
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174 extern AudioBootStrap DUMMYAUD_bootstrap;
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175 #endif
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176 #if SDL_AUDIO_DRIVER_DC
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177 extern AudioBootStrap DCAUD_bootstrap;
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178 #endif
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179 #if SDL_AUDIO_DRIVER_MMEAUDIO
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180 extern AudioBootStrap MMEAUDIO_bootstrap;
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181 #endif
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182 #if SDL_AUDIO_DRIVER_DART
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183 extern AudioBootStrap DART_bootstrap;
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184 #endif
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185
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186 #endif /* _SDL_sysaudio_h */
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187 /* vi: set ts=4 sw=4 expandtab: */