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annotate src/audio/SDL_sysaudio.h @ 1713:3e66ed1690e4 SDL-1.3

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author Sam Lantinga <slouken@libsdl.org>
date Mon, 26 Jun 2006 14:29:50 +0000
parents 782fd950bd46
children 5f6550e5184f 37c9c4590689
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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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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
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33 /* Define the SDL audio driver structure */
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34 #define _THIS SDL_AudioDevice *_this
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35 #ifndef _STATUS
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36 #define _STATUS SDL_status *status
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37 #endif
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38 struct SDL_AudioDevice
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39 {
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40 /* * * */
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41 /* The name of this audio driver */
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42 const char *name;
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43
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44 /* * * */
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45 /* The description of this audio driver */
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46 const char *desc;
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47
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48 /* * * */
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49 /* Public driver functions */
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50 int (*OpenAudio) (_THIS, SDL_AudioSpec * spec);
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51 void (*ThreadInit) (_THIS); /* Called by audio thread at start */
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52 void (*WaitAudio) (_THIS);
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53 void (*PlayAudio) (_THIS);
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54 Uint8 *(*GetAudioBuf) (_THIS);
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55 void (*WaitDone) (_THIS);
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56 void (*CloseAudio) (_THIS);
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57
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58 /* * * */
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59 /* Lock / Unlock functions added for the Mac port */
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60 void (*LockAudio) (_THIS);
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61 void (*UnlockAudio) (_THIS);
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62
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63 /* * * */
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64 /* Data common to all devices */
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65
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66 /* The current audio specification (shared with audio thread) */
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67 SDL_AudioSpec spec;
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68
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69 /* An audio conversion block for audio format emulation */
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70 SDL_AudioCVT convert;
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71
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72 /* Current state flags */
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73 int enabled;
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74 int paused;
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75 int opened;
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76
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77 /* Fake audio buffer for when the audio hardware is busy */
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78 Uint8 *fake_stream;
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79
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80 /* A semaphore for locking the mixing buffers */
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81 SDL_mutex *mixer_lock;
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82
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83 /* A thread to feed the audio device */
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84 SDL_Thread *thread;
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85 Uint32 threadid;
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86
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87 /* * * */
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88 /* Data private to this driver */
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89 struct SDL_PrivateAudioData *hidden;
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90
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91 /* * * */
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92 /* The function used to dispose of this structure */
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93 void (*free) (_THIS);
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94 };
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95 #undef _THIS
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96
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97 typedef struct AudioBootStrap
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98 {
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99 const char *name;
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100 const char *desc;
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101 int (*available) (void);
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102 SDL_AudioDevice *(*create) (int devindex);
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103 } AudioBootStrap;
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104
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105 #if SDL_AUDIO_DRIVER_BSD
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106 extern AudioBootStrap BSD_AUDIO_bootstrap;
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107 #endif
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108 #if SDL_AUDIO_DRIVER_OSS
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109 extern AudioBootStrap DSP_bootstrap;
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110 extern AudioBootStrap DMA_bootstrap;
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111 #endif
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112 #if SDL_AUDIO_DRIVER_ALSA
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113 extern AudioBootStrap ALSA_bootstrap;
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114 #endif
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115 #if SDL_AUDIO_DRIVER_QNXNTO
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116 extern AudioBootStrap QNXNTOAUDIO_bootstrap;
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117 #endif
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118 #if SDL_AUDIO_DRIVER_SUNAUDIO
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119 extern AudioBootStrap SUNAUDIO_bootstrap;
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120 #endif
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121 #if SDL_AUDIO_DRIVER_DMEDIA
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122 extern AudioBootStrap DMEDIA_bootstrap;
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123 #endif
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124 #if SDL_AUDIO_DRIVER_ARTS
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125 extern AudioBootStrap ARTS_bootstrap;
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126 #endif
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127 #if SDL_AUDIO_DRIVER_ESD
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128 extern AudioBootStrap ESD_bootstrap;
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129 #endif
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130 #if SDL_AUDIO_DRIVER_NAS
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131 extern AudioBootStrap NAS_bootstrap;
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132 #endif
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133 #if SDL_AUDIO_DRIVER_DSOUND
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134 extern AudioBootStrap DSOUND_bootstrap;
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135 #endif
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136 #if SDL_AUDIO_DRIVER_WAVEOUT
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137 extern AudioBootStrap WAVEOUT_bootstrap;
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138 #endif
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139 #if SDL_AUDIO_DRIVER_PAUD
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140 extern AudioBootStrap Paud_bootstrap;
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141 #endif
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142 #if SDL_AUDIO_DRIVER_BAUDIO
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143 extern AudioBootStrap BAUDIO_bootstrap;
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144 #endif
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145 #if SDL_AUDIO_DRIVER_COREAUDIO
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146 extern AudioBootStrap COREAUDIO_bootstrap;
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147 #endif
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148 #if SDL_AUDIO_DRIVER_SNDMGR
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149 extern AudioBootStrap SNDMGR_bootstrap;
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150 #endif
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151 #if SDL_AUDIO_DRIVER_AHI
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152 extern AudioBootStrap AHI_bootstrap;
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153 #endif
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154 #if SDL_AUDIO_DRIVER_MINT
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155 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
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156 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
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157 extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
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158 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
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159 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
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160 #endif
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161 #if SDL_AUDIO_DRIVER_DISK
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162 extern AudioBootStrap DISKAUD_bootstrap;
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163 #endif
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164 #if SDL_AUDIO_DRIVER_DUMMY
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165 extern AudioBootStrap DUMMYAUD_bootstrap;
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166 #endif
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167 #if SDL_AUDIO_DRIVER_DC
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168 extern AudioBootStrap DCAUD_bootstrap;
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169 #endif
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170 #if SDL_AUDIO_DRIVER_MMEAUDIO
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171 extern AudioBootStrap MMEAUDIO_bootstrap;
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172 #endif
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173 #if SDL_AUDIO_DRIVER_DART
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174 extern AudioBootStrap DART_bootstrap;
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175 #endif
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176
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177 /* This is the current audio device */
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178 extern SDL_AudioDevice *current_audio;
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179
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180 #endif /* _SDL_sysaudio_h */
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181 /* vi: set ts=4 sw=4 expandtab: */