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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 |
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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 /* The name of this audio driver */ |
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41 const char *name; |
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42 |
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43 /* * * */ |
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44 /* The description of this audio driver */ |
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45 const char *desc; |
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46 |
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47 /* * * */ |
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48 /* Public driver functions */ |
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49 int (*OpenAudio)(_THIS, SDL_AudioSpec *spec); |
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50 void (*ThreadInit)(_THIS); /* Called by audio thread at start */ |
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51 void (*WaitAudio)(_THIS); |
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52 void (*PlayAudio)(_THIS); |
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53 Uint8 *(*GetAudioBuf)(_THIS); |
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54 void (*WaitDone)(_THIS); |
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55 void (*CloseAudio)(_THIS); |
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56 |
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57 /* * * */ |
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58 /* Lock / Unlock functions added for the Mac port */ |
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59 void (*LockAudio)(_THIS); |
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60 void (*UnlockAudio)(_THIS); |
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61 |
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62 /* * * */ |
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63 /* Data common to all devices */ |
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64 |
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65 /* The current audio specification (shared with audio thread) */ |
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66 SDL_AudioSpec spec; |
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67 |
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68 /* An audio conversion block for audio format emulation */ |
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69 SDL_AudioCVT convert; |
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70 |
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71 /* Current state flags */ |
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72 int enabled; |
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73 int paused; |
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74 int opened; |
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75 |
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76 /* Fake audio buffer for when the audio hardware is busy */ |
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77 Uint8 *fake_stream; |
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78 |
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79 /* A semaphore for locking the mixing buffers */ |
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80 SDL_mutex *mixer_lock; |
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81 |
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82 /* A thread to feed the audio device */ |
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83 SDL_Thread *thread; |
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84 Uint32 threadid; |
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85 |
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86 /* * * */ |
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87 /* Data private to this driver */ |
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88 struct SDL_PrivateAudioData *hidden; |
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89 |
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90 /* * * */ |
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91 /* The function used to dispose of this structure */ |
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92 void (*free)(_THIS); |
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93 }; |
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94 #undef _THIS |
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95 |
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96 typedef struct AudioBootStrap { |
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97 const char *name; |
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98 const char *desc; |
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99 int (*available)(void); |
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100 SDL_AudioDevice *(*create)(int devindex); |
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101 } AudioBootStrap; |
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102 |
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103 #if SDL_AUDIO_DRIVER_BSD |
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104 extern AudioBootStrap BSD_AUDIO_bootstrap; |
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105 #endif |
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106 #if SDL_AUDIO_DRIVER_PULSE |
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107 extern AudioBootStrap PULSE_bootstrap; |
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108 #endif |
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109 #if SDL_AUDIO_DRIVER_OSS |
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110 extern AudioBootStrap DSP_bootstrap; |
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111 extern AudioBootStrap DMA_bootstrap; |
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112 #endif |
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113 #if SDL_AUDIO_DRIVER_ALSA |
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114 extern AudioBootStrap ALSA_bootstrap; |
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115 #endif |
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116 #if SDL_AUDIO_DRIVER_QNXNTO |
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117 extern AudioBootStrap QNXNTOAUDIO_bootstrap; |
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118 #endif |
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119 #if SDL_AUDIO_DRIVER_SUNAUDIO |
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120 extern AudioBootStrap SUNAUDIO_bootstrap; |
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121 #endif |
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122 #if SDL_AUDIO_DRIVER_DMEDIA |
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123 extern AudioBootStrap DMEDIA_bootstrap; |
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124 #endif |
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125 #if SDL_AUDIO_DRIVER_ARTS |
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126 extern AudioBootStrap ARTS_bootstrap; |
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127 #endif |
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128 #if SDL_AUDIO_DRIVER_ESD |
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129 extern AudioBootStrap ESD_bootstrap; |
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130 #endif |
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131 #if SDL_AUDIO_DRIVER_NAS |
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132 extern AudioBootStrap NAS_bootstrap; |
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133 #endif |
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134 #if SDL_AUDIO_DRIVER_DSOUND |
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135 extern AudioBootStrap DSOUND_bootstrap; |
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136 #endif |
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137 #if SDL_AUDIO_DRIVER_WAVEOUT |
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138 extern AudioBootStrap WAVEOUT_bootstrap; |
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139 #endif |
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140 #if SDL_AUDIO_DRIVER_PAUD |
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141 extern AudioBootStrap Paud_bootstrap; |
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142 #endif |
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143 #if SDL_AUDIO_DRIVER_BAUDIO |
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144 extern AudioBootStrap BAUDIO_bootstrap; |
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145 #endif |
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146 #if SDL_AUDIO_DRIVER_COREAUDIO |
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147 extern AudioBootStrap COREAUDIO_bootstrap; |
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148 #endif |
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149 #if SDL_AUDIO_DRIVER_SNDMGR |
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150 extern AudioBootStrap SNDMGR_bootstrap; |
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151 #endif |
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152 #if SDL_AUDIO_DRIVER_MINT |
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153 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap; |
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154 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap; |
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155 extern AudioBootStrap MINTAUDIO_STFA_bootstrap; |
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156 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap; |
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157 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap; |
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158 #endif |
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159 #if SDL_AUDIO_DRIVER_DISK |
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160 extern AudioBootStrap DISKAUD_bootstrap; |
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161 #endif |
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162 #if SDL_AUDIO_DRIVER_DUMMY |
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163 extern AudioBootStrap DUMMYAUD_bootstrap; |
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164 #endif |
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165 #if SDL_AUDIO_DRIVER_DC |
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166 extern AudioBootStrap DCAUD_bootstrap; |
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167 #endif |
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168 #if SDL_AUDIO_DRIVER_NDS |
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169 extern AudioBootStrap NDSAUD_bootstrap; |
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170 #endif |
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171 #if SDL_AUDIO_DRIVER_MMEAUDIO |
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172 extern AudioBootStrap MMEAUDIO_bootstrap; |
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173 #endif |
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174 #if SDL_AUDIO_DRIVER_DART |
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175 extern AudioBootStrap DART_bootstrap; |
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176 #endif |
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177 #if SDL_AUDIO_DRIVER_EPOCAUDIO |
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178 extern AudioBootStrap EPOCAudio_bootstrap; |
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179 #endif |
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180 |
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181 /* This is the current audio device */ |
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182 extern SDL_AudioDevice *current_audio; |
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183 |
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184 #endif /* _SDL_sysaudio_h */ |