1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 Sam Lantinga 4 5 This library is SDL_free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken@libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 #ifndef _SDL_sysaudio_h 25 #define _SDL_sysaudio_h 26 27 #include "SDL_mutex.h" 28 #include "SDL_thread.h" 29 30 /* The SDL audio driver */ 31 typedef struct SDL_AudioDevice SDL_AudioDevice; 32 33 /* Define the SDL audio driver structure */ 34 #define _THIS SDL_AudioDevice *_this 35 #ifndef _STATUS 36 #define _STATUS SDL_status *status 37 #endif 38 struct SDL_AudioDevice { 39 /* * * */ 40 /* The name of this audio driver */ 41 const char *name; 42 43 /* * * */ 44 /* The description of this audio driver */ 45 const char *desc; 46 47 /* * * */ 48 /* Public driver functions */ 49 int (*OpenAudio)(_THIS, SDL_AudioSpec *spec); 50 void (*ThreadInit)(_THIS); /* Called by audio thread at start */ 51 void (*WaitAudio)(_THIS); 52 void (*PlayAudio)(_THIS); 53 Uint8 *(*GetAudioBuf)(_THIS); 54 void (*WaitDone)(_THIS); 55 void (*CloseAudio)(_THIS); 56 57 /* * * */ 58 /* Lock / Unlock functions added for the Mac port */ 59 void (*LockAudio)(_THIS); 60 void (*UnlockAudio)(_THIS); 61 62 void (*SetCaption)(_THIS, const char *caption); 63 64 /* * * */ 65 /* Data common to all devices */ 66 67 /* The current audio specification (shared with audio thread) */ 68 SDL_AudioSpec spec; 69 70 /* An audio conversion block for audio format emulation */ 71 SDL_AudioCVT convert; 72 73 /* Current state flags */ 74 int enabled; 75 int paused; 76 int opened; 77 78 /* Fake audio buffer for when the audio hardware is busy */ 79 Uint8 *fake_stream; 80 81 /* A semaphore for locking the mixing buffers */ 82 SDL_mutex *mixer_lock; 83 84 /* A thread to feed the audio device */ 85 SDL_Thread *thread; 86 Uint32 threadid; 87 88 /* * * */ 89 /* Data private to this driver */ 90 struct SDL_PrivateAudioData *hidden; 91 92 /* * * */ 93 /* The function used to dispose of this structure */ 94 void (*free)(_THIS); 95 }; 96 #undef _THIS 97 98 typedef struct AudioBootStrap { 99 const char *name; 100 const char *desc; 101 int (*available)(void); 102 SDL_AudioDevice *(*create)(int devindex); 103 } AudioBootStrap; 104 105 #if SDL_AUDIO_DRIVER_BSD 106 extern AudioBootStrap BSD_AUDIO_bootstrap; 107 #endif 108 #if SDL_AUDIO_DRIVER_SNDIO 109 extern AudioBootStrap SNDIO_bootstrap; 110 #endif 111 #if SDL_AUDIO_DRIVER_PULSE 112 extern AudioBootStrap PULSE_bootstrap; 113 #endif 114 #if SDL_AUDIO_DRIVER_ALSA 115 extern AudioBootStrap ALSA_bootstrap; 116 #endif 117 #if SDL_AUDIO_DRIVER_OSS 118 extern AudioBootStrap DSP_bootstrap; 119 extern AudioBootStrap DMA_bootstrap; 120 #endif 121 #if SDL_AUDIO_DRIVER_QNXNTO 122 extern AudioBootStrap QNXNTOAUDIO_bootstrap; 123 #endif 124 #if SDL_AUDIO_DRIVER_SUNAUDIO 125 extern AudioBootStrap SUNAUDIO_bootstrap; 126 #endif 127 #if SDL_AUDIO_DRIVER_DMEDIA 128 extern AudioBootStrap DMEDIA_bootstrap; 129 #endif 130 #if SDL_AUDIO_DRIVER_ARTS 131 extern AudioBootStrap ARTS_bootstrap; 132 #endif 133 #if SDL_AUDIO_DRIVER_ESD 134 extern AudioBootStrap ESD_bootstrap; 135 #endif 136 #if SDL_AUDIO_DRIVER_NAS 137 extern AudioBootStrap NAS_bootstrap; 138 #endif 139 #if SDL_AUDIO_DRIVER_DSOUND 140 extern AudioBootStrap DSOUND_bootstrap; 141 #endif 142 #if SDL_AUDIO_DRIVER_WAVEOUT 143 extern AudioBootStrap WAVEOUT_bootstrap; 144 #endif 145 #if SDL_AUDIO_DRIVER_PAUD 146 extern AudioBootStrap Paud_bootstrap; 147 #endif 148 #if SDL_AUDIO_DRIVER_BAUDIO 149 extern AudioBootStrap BAUDIO_bootstrap; 150 #endif 151 #if SDL_AUDIO_DRIVER_COREAUDIO 152 extern AudioBootStrap COREAUDIO_bootstrap; 153 #endif 154 #if SDL_AUDIO_DRIVER_SNDMGR 155 extern AudioBootStrap SNDMGR_bootstrap; 156 #endif 157 #if SDL_AUDIO_DRIVER_MINT 158 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap; 159 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap; 160 extern AudioBootStrap MINTAUDIO_STFA_bootstrap; 161 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap; 162 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap; 163 #endif 164 #if SDL_AUDIO_DRIVER_DISK 165 extern AudioBootStrap DISKAUD_bootstrap; 166 #endif 167 #if SDL_AUDIO_DRIVER_DUMMY 168 extern AudioBootStrap DUMMYAUD_bootstrap; 169 #endif 170 #if SDL_AUDIO_DRIVER_DC 171 extern AudioBootStrap DCAUD_bootstrap; 172 #endif 173 #if SDL_AUDIO_DRIVER_NDS 174 extern AudioBootStrap NDSAUD_bootstrap; 175 #endif 176 #if SDL_AUDIO_DRIVER_MMEAUDIO 177 extern AudioBootStrap MMEAUDIO_bootstrap; 178 #endif 179 #if SDL_AUDIO_DRIVER_DART 180 extern AudioBootStrap DART_bootstrap; 181 #endif 182 #if SDL_AUDIO_DRIVER_EPOCAUDIO 183 extern AudioBootStrap EPOCAudio_bootstrap; 184 #endif 185 186 /* This is the current audio device */ 187 extern SDL_AudioDevice *current_audio; 188 189 #endif /* _SDL_sysaudio_h */ 190