annotate src/audio/SDL_sysaudio.h @ 364:4cc7275320a5

Fixed MacOS X installation for SDL 1.2.4 release (thanks Darrell)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 25 Apr 2002 16:09:05 +0000
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children d219b0e02f5f
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, 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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #ifndef _SDL_sysaudio_h
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29 #define _SDL_sysaudio_h
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30
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31 #include "SDL_mutex.h"
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32 #include "SDL_thread.h"
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33
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34 /* The SDL audio driver */
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35 typedef struct SDL_AudioDevice SDL_AudioDevice;
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36
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37 /* Define the SDL audio driver structure */
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38 #define _THIS SDL_AudioDevice *_this
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39 #ifndef _STATUS
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40 #define _STATUS SDL_status *status
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41 #endif
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42 struct SDL_AudioDevice {
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43 /* * * */
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44 /* The name of this audio driver */
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45 const char *name;
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46
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47 /* * * */
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48 /* The description of this audio driver */
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49 const char *desc;
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50
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51 /* * * */
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52 /* Public driver functions */
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53 int (*OpenAudio)(_THIS, SDL_AudioSpec *spec);
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54 void (*ThreadInit)(_THIS); /* Called by audio thread at start */
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55 void (*WaitAudio)(_THIS);
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56 void (*PlayAudio)(_THIS);
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57 Uint8 *(*GetAudioBuf)(_THIS);
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58 void (*WaitDone)(_THIS);
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59 void (*CloseAudio)(_THIS);
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60
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61 /* * * */
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62 /* Lock / Unlock functions added for the Mac port */
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63 void (*LockAudio)(_THIS);
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64 void (*UnlockAudio)(_THIS);
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65
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66 /* * * */
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67 /* Data common to all devices */
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68
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69 /* The current audio specification (shared with audio thread) */
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70 SDL_AudioSpec spec;
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71
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72 /* An audio conversion block for audio format emulation */
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73 SDL_AudioCVT convert;
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74
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75 /* Current state flags */
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76 int enabled;
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77 int paused;
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78 int opened;
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79
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80 /* Fake audio buffer for when the audio hardware is busy */
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81 Uint8 *fake_stream;
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82
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83 /* A semaphore for locking the mixing buffers */
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84 SDL_mutex *mixer_lock;
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85
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86 /* A thread to feed the audio device */
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87 SDL_Thread *thread;
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88 Uint32 threadid;
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89
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90 /* * * */
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91 /* Data private to this driver */
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92 struct SDL_PrivateAudioData *hidden;
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93
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94 /* * * */
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95 /* The function used to dispose of this structure */
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96 void (*free)(_THIS);
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97 };
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98 #undef _THIS
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99
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100 typedef struct AudioBootStrap {
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101 const char *name;
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102 const char *desc;
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103 int (*available)(void);
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104 SDL_AudioDevice *(*create)(int devindex);
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105 } AudioBootStrap;
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106
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107 #ifdef OPENBSD_AUDIO_SUPPORT
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108 extern AudioBootStrap OPENBSD_AUDIO_bootstrap;
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109 #endif
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110 #ifdef OSS_SUPPORT
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111 extern AudioBootStrap DSP_bootstrap;
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112 extern AudioBootStrap DMA_bootstrap;
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113 #endif
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114 #ifdef ALSA_SUPPORT
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115 extern AudioBootStrap ALSA_bootstrap;
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116 #endif
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117 #ifdef SUNAUDIO_SUPPORT
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118 extern AudioBootStrap SUNAUDIO_bootstrap;
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119 #endif
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120 #ifdef DMEDIA_SUPPORT
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121 extern AudioBootStrap DMEDIA_bootstrap;
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122 #endif
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123 #ifdef ARTSC_SUPPORT
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124 extern AudioBootStrap ARTSC_bootstrap;
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125 #endif
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126 #ifdef ESD_SUPPORT
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127 extern AudioBootStrap ESD_bootstrap;
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128 #endif
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129 #ifdef NAS_SUPPORT
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130 extern AudioBootStrap NAS_bootstrap;
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131 #endif
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132 #ifdef ENABLE_DIRECTX
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133 extern AudioBootStrap DSOUND_bootstrap;
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134 #endif
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135 #ifdef ENABLE_WINDIB
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136 extern AudioBootStrap WAVEOUT_bootstrap;
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137 #endif
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138 #ifdef _AIX
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139 extern AudioBootStrap Paud_bootstrap;
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140 #endif
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141 #ifdef __BEOS__
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142 extern AudioBootStrap BAUDIO_bootstrap;
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143 #endif
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144 #if defined(macintosh) || TARGET_API_MAC_CARBON
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145 extern AudioBootStrap SNDMGR_bootstrap;
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146 #endif
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147 #ifdef ENABLE_AHI
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148 extern AudioBootStrap AHI_bootstrap;
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149 #endif
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150 #ifdef DISKAUD_SUPPORT
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151 extern AudioBootStrap DISKAUD_bootstrap;
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152 #endif
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153
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154 /* This is the current audio device */
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155 extern SDL_AudioDevice *current_audio;
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156
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157 #endif /* _SDL_sysaudio_h */