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annotate src/audio/SDL_sysaudio.h @ 3794:db24e43972ac SDL-ryan-multiple-audio-device

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Test program to play audio to every available device, one at a time, then all at once.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 03 Oct 2006 23:45:36 +0000
parents 2b4795e92b62
children 589bc3d060cd
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 typedef struct SDL_AudioDriver
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51 {
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52 /* * * */
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53 /* The name of this audio driver */
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54 const char *name;
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55
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56 /* * * */
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57 /* The description of this audio driver */
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58 const char *desc;
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59
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60 SDL_AudioDriverImpl impl;
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61 } SDL_AudioDriver;
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62
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63
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64 /* Define the SDL audio driver structure */
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65 struct SDL_AudioDevice
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66 {
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67 /* * * */
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68 /* Lowlevel audio implementation */
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69 const SDL_AudioDriver *driver;
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70
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71 /* * * */
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72 /* Data common to all devices */
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73
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74 /* The current audio specification (shared with audio thread) */
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75 SDL_AudioSpec spec;
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76
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77 /* An audio conversion block for audio format emulation */
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78 SDL_AudioCVT convert;
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79
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80 /* Current state flags */
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81 int enabled;
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82 int paused;
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83 int opened;
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84
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85 /* Fake audio buffer for when the audio hardware is busy */
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86 Uint8 *fake_stream;
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87
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88 /* A semaphore for locking the mixing buffers */
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89 SDL_mutex *mixer_lock;
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90
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91 /* A thread to feed the audio device */
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92 SDL_Thread *thread;
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93 Uint32 threadid;
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94
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95 /* * * */
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96 /* Data private to this driver */
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97 struct SDL_PrivateAudioData *hidden;
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98
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99 /* * * */
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100 /* The function used to dispose of this structure */
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101 void (*free) (_THIS);
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102 };
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103 #undef _THIS
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104
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105 typedef struct AudioBootStrap
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106 {
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107 const char *name;
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108 const char *desc;
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109 int (*available) (void);
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110 int (*init) (SDL_AudioDriverImpl *impl);
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111 } AudioBootStrap;
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112
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113 #if SDL_AUDIO_DRIVER_BSD
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114 extern AudioBootStrap BSD_AUDIO_bootstrap;
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115 #endif
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116 #if SDL_AUDIO_DRIVER_OSS
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117 extern AudioBootStrap DSP_bootstrap;
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118 extern AudioBootStrap DMA_bootstrap;
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119 #endif
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120 #if SDL_AUDIO_DRIVER_ALSA
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121 extern AudioBootStrap ALSA_bootstrap;
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122 #endif
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123 #if SDL_AUDIO_DRIVER_QNXNTO
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124 extern AudioBootStrap QNXNTOAUDIO_bootstrap;
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125 #endif
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126 #if SDL_AUDIO_DRIVER_SUNAUDIO
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127 extern AudioBootStrap SUNAUDIO_bootstrap;
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128 #endif
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129 #if SDL_AUDIO_DRIVER_DMEDIA
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130 extern AudioBootStrap DMEDIA_bootstrap;
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131 #endif
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132 #if SDL_AUDIO_DRIVER_ARTS
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133 extern AudioBootStrap ARTS_bootstrap;
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134 #endif
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135 #if SDL_AUDIO_DRIVER_ESD
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136 extern AudioBootStrap ESD_bootstrap;
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137 #endif
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138 #if SDL_AUDIO_DRIVER_NAS
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139 extern AudioBootStrap NAS_bootstrap;
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140 #endif
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141 #if SDL_AUDIO_DRIVER_DSOUND
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142 extern AudioBootStrap DSOUND_bootstrap;
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143 #endif
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144 #if SDL_AUDIO_DRIVER_WAVEOUT
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145 extern AudioBootStrap WAVEOUT_bootstrap;
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146 #endif
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147 #if SDL_AUDIO_DRIVER_PAUD
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148 extern AudioBootStrap Paud_bootstrap;
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149 #endif
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150 #if SDL_AUDIO_DRIVER_BAUDIO
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151 extern AudioBootStrap BAUDIO_bootstrap;
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152 #endif
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153 #if SDL_AUDIO_DRIVER_COREAUDIO
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154 extern AudioBootStrap COREAUDIO_bootstrap;
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155 #endif
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156 #if SDL_AUDIO_DRIVER_SNDMGR
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157 extern AudioBootStrap SNDMGR_bootstrap;
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158 #endif
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159 #if SDL_AUDIO_DRIVER_AHI
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160 extern AudioBootStrap AHI_bootstrap;
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161 #endif
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162 #if SDL_AUDIO_DRIVER_MINT
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163 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
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164 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
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165 extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
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166 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
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167 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
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168 #endif
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169 #if SDL_AUDIO_DRIVER_DISK
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170 extern AudioBootStrap DISKAUD_bootstrap;
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171 #endif
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172 #if SDL_AUDIO_DRIVER_DUMMY
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173 extern AudioBootStrap DUMMYAUD_bootstrap;
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174 #endif
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175 #if SDL_AUDIO_DRIVER_DC
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176 extern AudioBootStrap DCAUD_bootstrap;
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177 #endif
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178 #if SDL_AUDIO_DRIVER_MMEAUDIO
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179 extern AudioBootStrap MMEAUDIO_bootstrap;
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180 #endif
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181 #if SDL_AUDIO_DRIVER_DART
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182 extern AudioBootStrap DART_bootstrap;
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183 #endif
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184
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185 #endif /* _SDL_sysaudio_h */
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186 /* vi: set ts=4 sw=4 expandtab: */