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annotate src/audio/SDL_sysaudio.h @ 1361:19418e4422cb

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New configure-based build system. Still work in progress, but much improved
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Feb 2006 10:11:48 +0000
parents 3692456e7b0f
children d910939febfa
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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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifndef _SDL_sysaudio_h
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24 #define _SDL_sysaudio_h
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25
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26 #include "SDL_mutex.h"
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27 #include "SDL_thread.h"
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28
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29 /* The SDL audio driver */
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30 typedef struct SDL_AudioDevice SDL_AudioDevice;
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31
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32 /* Define the SDL audio driver structure */
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33 #define _THIS SDL_AudioDevice *_this
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34 #ifndef _STATUS
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35 #define _STATUS SDL_status *status
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36 #endif
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37 struct SDL_AudioDevice {
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38 /* * * */
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39 /* The name of this audio driver */
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40 const char *name;
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41
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42 /* * * */
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43 /* The description of this audio driver */
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44 const char *desc;
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45
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46 /* * * */
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47 /* Public driver functions */
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48 int (*OpenAudio)(_THIS, SDL_AudioSpec *spec);
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49 void (*ThreadInit)(_THIS); /* Called by audio thread at start */
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50 void (*WaitAudio)(_THIS);
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51 void (*PlayAudio)(_THIS);
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52 Uint8 *(*GetAudioBuf)(_THIS);
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53 void (*WaitDone)(_THIS);
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54 void (*CloseAudio)(_THIS);
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55
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56 /* * * */
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57 /* Lock / Unlock functions added for the Mac port */
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58 void (*LockAudio)(_THIS);
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59 void (*UnlockAudio)(_THIS);
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60
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61 /* * * */
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62 /* Data common to all devices */
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63
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64 /* The current audio specification (shared with audio thread) */
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65 SDL_AudioSpec spec;
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66
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67 /* An audio conversion block for audio format emulation */
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68 SDL_AudioCVT convert;
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69
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70 /* Current state flags */
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71 int enabled;
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72 int paused;
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73 int opened;
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74
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75 /* Fake audio buffer for when the audio hardware is busy */
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76 Uint8 *fake_stream;
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77
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78 /* A semaphore for locking the mixing buffers */
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79 SDL_mutex *mixer_lock;
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80
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81 /* A thread to feed the audio device */
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82 SDL_Thread *thread;
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83 Uint32 threadid;
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84
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85 /* * * */
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86 /* Data private to this driver */
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87 struct SDL_PrivateAudioData *hidden;
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88
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89 /* * * */
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90 /* The function used to dispose of this structure */
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91 void (*free)(_THIS);
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92 };
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93 #undef _THIS
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94
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95 typedef struct AudioBootStrap {
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96 const char *name;
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97 const char *desc;
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98 int (*available)(void);
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99 SDL_AudioDevice *(*create)(int devindex);
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100 } AudioBootStrap;
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101
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102 #if SDL_AUDIO_DRIVER_OPENBSD
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103 extern AudioBootStrap OPENBSD_AUDIO_bootstrap;
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104 #endif
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105 #if SDL_AUDIO_DRIVER_OSS
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106 extern AudioBootStrap DSP_bootstrap;
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107 extern AudioBootStrap DMA_bootstrap;
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108 #endif
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109 #if SDL_AUDIO_DRIVER_ALSA
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110 extern AudioBootStrap ALSA_bootstrap;
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111 #endif
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112 #if SDL_AUDIO_DRIVER_QNXNTO
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113 extern AudioBootStrap QNXNTOAUDIO_bootstrap;
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114 #endif
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115 #if SDL_AUDIO_DRIVER_SUNAUDIO
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116 extern AudioBootStrap SUNAUDIO_bootstrap;
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117 #endif
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118 #if SDL_AUDIO_DRIVER_DMEDIA
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119 extern AudioBootStrap DMEDIA_bootstrap;
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120 #endif
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121 #if SDL_AUDIO_DRIVER_ARTS
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122 extern AudioBootStrap ARTS_bootstrap;
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123 #endif
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124 #if SDL_AUDIO_DRIVER_ESD
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125 extern AudioBootStrap ESD_bootstrap;
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126 #endif
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127 #if SDL_AUDIO_DRIVER_NAS
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128 extern AudioBootStrap NAS_bootstrap;
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129 #endif
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130 #if SDL_AUDIO_DRIVER_DSOUND
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131 extern AudioBootStrap DSOUND_bootstrap;
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132 #endif
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133 #if SDL_AUDIO_DRIVER_WAVEOUT
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134 extern AudioBootStrap WAVEOUT_bootstrap;
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135 #endif
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136 #if SDL_AUDIO_DRIVER_PAUD
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137 extern AudioBootStrap Paud_bootstrap;
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138 #endif
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139 #if SDL_AUDIO_DRIVER_BAUDIO
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140 extern AudioBootStrap BAUDIO_bootstrap;
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141 #endif
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142 #if SDL_AUDIO_DRIVER_COREAUDIO
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143 extern AudioBootStrap COREAUDIO_bootstrap;
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144 #endif
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145 #if SDL_AUDIO_DRIVER_SNDMGR
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146 extern AudioBootStrap SNDMGR_bootstrap;
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147 #endif
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148 #if SDL_AUDIO_DRIVER_AHI
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149 extern AudioBootStrap AHI_bootstrap;
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150 #endif
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151 #if SDL_AUDIO_DRIVER_MINT
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152 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
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153 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
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154 extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
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155 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
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156 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
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157 #endif
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158 #if SDL_AUDIO_DRIVER_DISK
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159 extern AudioBootStrap DISKAUD_bootstrap;
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160 #endif
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161 #if SDL_AUDIO_DRIVER_DC
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162 extern AudioBootStrap DCAUD_bootstrap;
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163 #endif
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164 #if SDL_AUDIO_DRIVER_DRENDERER
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165 extern AudioBootStrap DRENDERER_bootstrap;
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166 #endif
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167 #if SDL_AUDIO_DRIVER_MMEAUDIO
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168 extern AudioBootStrap MMEAUDIO_bootstrap;
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169 #endif
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170 #if SDL_AUDIO_DRIVER_DART
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171 extern AudioBootStrap DART_bootstrap;
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172 #endif
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173
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174 /* This is the current audio device */
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175 extern SDL_AudioDevice *current_audio;
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176
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177 #endif /* _SDL_sysaudio_h */