annotate src/audio/SDL_audio.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 09:09:21 +0000
parents ce229f6b5ce0
children
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 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 /* Allow access to a raw mixing buffer */
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25
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26 #include "SDL.h"
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27 #include "SDL_audio_c.h"
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28 #include "SDL_audiomem.h"
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29 #include "SDL_sysaudio.h"
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30
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31 #define _THIS SDL_AudioDevice *this
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32
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33 static SDL_AudioDriver current_audio;
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34 static SDL_AudioDevice *open_devices[16];
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35
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36 /* !!! FIXME: These are wordy and unlocalized... */
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37 #define DEFAULT_OUTPUT_DEVNAME "System audio output device"
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38 #define DEFAULT_INPUT_DEVNAME "System audio capture device"
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39
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40
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41 /*
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42 * Not all of these will be compiled and linked in, but it's convenient
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43 * to have a complete list here and saves yet-another block of #ifdefs...
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44 * Please see bootstrap[], below, for the actual #ifdef mess.
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45 */
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46 extern AudioBootStrap BSD_AUDIO_bootstrap;
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47 extern AudioBootStrap DSP_bootstrap;
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48 extern AudioBootStrap DMA_bootstrap;
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49 extern AudioBootStrap ALSA_bootstrap;
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50 extern AudioBootStrap QNXNTOAUDIO_bootstrap;
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51 extern AudioBootStrap SUNAUDIO_bootstrap;
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52 extern AudioBootStrap DMEDIA_bootstrap;
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53 extern AudioBootStrap ARTS_bootstrap;
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54 extern AudioBootStrap ESD_bootstrap;
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55 extern AudioBootStrap NAS_bootstrap;
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56 extern AudioBootStrap DSOUND_bootstrap;
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57 extern AudioBootStrap WAVEOUT_bootstrap;
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58 extern AudioBootStrap PAUDIO_bootstrap;
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59 extern AudioBootStrap BEOSAUDIO_bootstrap;
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60 extern AudioBootStrap COREAUDIO_bootstrap;
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61 extern AudioBootStrap SNDMGR_bootstrap;
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62 extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
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63 extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
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64 extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
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65 extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
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66 extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
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67 extern AudioBootStrap DISKAUD_bootstrap;
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68 extern AudioBootStrap DUMMYAUD_bootstrap;
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69 extern AudioBootStrap DCAUD_bootstrap;
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70 extern AudioBootStrap MMEAUDIO_bootstrap;
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71 extern AudioBootStrap DART_bootstrap;
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72
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73
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74 /* Available audio drivers */
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75 static AudioBootStrap *bootstrap[] = {
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76 #if SDL_AUDIO_DRIVER_BSD
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77 &BSD_AUDIO_bootstrap,
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78 #endif
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79 #if SDL_AUDIO_DRIVER_OSS
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80 &DSP_bootstrap,
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81 &DMA_bootstrap,
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82 #endif
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83 #if SDL_AUDIO_DRIVER_ALSA
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84 &ALSA_bootstrap,
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85 #endif
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86 #if SDL_AUDIO_DRIVER_QNXNTO
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87 &QNXNTOAUDIO_bootstrap,
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88 #endif
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89 #if SDL_AUDIO_DRIVER_SUNAUDIO
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90 &SUNAUDIO_bootstrap,
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91 #endif
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92 #if SDL_AUDIO_DRIVER_DMEDIA
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93 &DMEDIA_bootstrap,
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94 #endif
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95 #if SDL_AUDIO_DRIVER_ARTS
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96 &ARTS_bootstrap,
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97 #endif
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98 #if SDL_AUDIO_DRIVER_ESD
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99 &ESD_bootstrap,
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100 #endif
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101 #if SDL_AUDIO_DRIVER_NAS
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102 &NAS_bootstrap,
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103 #endif
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104 #if SDL_AUDIO_DRIVER_DSOUND
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105 &DSOUND_bootstrap,
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106 #endif
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107 #if SDL_AUDIO_DRIVER_WAVEOUT
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108 &WAVEOUT_bootstrap,
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109 #endif
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110 #if SDL_AUDIO_DRIVER_PAUDIO
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111 &PAUDIO_bootstrap,
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112 #endif
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113 #if SDL_AUDIO_DRIVER_BEOSAUDIO
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114 &BEOSAUDIO_bootstrap,
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115 #endif
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116 #if SDL_AUDIO_DRIVER_COREAUDIO
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117 &COREAUDIO_bootstrap,
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118 #endif
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119 #if SDL_AUDIO_DRIVER_SNDMGR
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120 &SNDMGR_bootstrap,
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121 #endif
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122 #if SDL_AUDIO_DRIVER_MINT
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123 &MINTAUDIO_GSXB_bootstrap,
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124 &MINTAUDIO_MCSN_bootstrap,
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125 &MINTAUDIO_STFA_bootstrap,
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126 &MINTAUDIO_XBIOS_bootstrap,
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127 &MINTAUDIO_DMA8_bootstrap,
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128 #endif
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129 #if SDL_AUDIO_DRIVER_DISK
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130 &DISKAUD_bootstrap,
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131 #endif
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132 #if SDL_AUDIO_DRIVER_DUMMY
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133 &DUMMYAUD_bootstrap,
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134 #endif
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135 #if SDL_AUDIO_DRIVER_DC
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136 &DCAUD_bootstrap,
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137 #endif
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138 #if SDL_AUDIO_DRIVER_MMEAUDIO
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139 &MMEAUDIO_bootstrap,
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140 #endif
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141 #if SDL_AUDIO_DRIVER_DART
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142 &DART_bootstrap,
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143 #endif
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144 NULL
0
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145 };
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146
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147 static SDL_AudioDevice *get_audio_device(SDL_AudioDeviceID id)
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148 {
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149 id--;
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150 if ( (id >= SDL_arraysize(open_devices)) || (open_devices[id] == NULL) ) {
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151 SDL_SetError("Invalid audio device ID");
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152 return NULL;
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153 }
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154
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155 return open_devices[id];
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156 }
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157
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158
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159 /* stubs for audio drivers that don't need a specific entry point... */
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160 static int SDL_AudioDetectDevices_Default(int iscapture) { return -1; }
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161 static void SDL_AudioThreadInit_Default(_THIS) { /* no-op. */ }
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162 static void SDL_AudioWaitDevice_Default(_THIS) { /* no-op. */ }
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163 static void SDL_AudioPlayDevice_Default(_THIS) { /* no-op. */ }
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164 static Uint8 *SDL_AudioGetDeviceBuf_Default(_THIS) { return NULL; }
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165 static void SDL_AudioWaitDone_Default(_THIS) { /* no-op. */ }
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166 static void SDL_AudioCloseDevice_Default(_THIS) { /* no-op. */ }
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167 static void SDL_AudioDeinitialize_Default(void) { /* no-op. */ }
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168
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169 static int
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170 SDL_AudioOpenDevice_Default(_THIS, const char *devname, int iscapture)
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171 {
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172 return 0;
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173 }
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174
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175 static const char *SDL_AudioGetDeviceName_Default(int index, int iscapture)
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176 {
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177 SDL_SetError("No such device");
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178 return NULL;
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179 }
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180
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181 static void
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182 SDL_AudioLockDevice_Default(SDL_AudioDevice * device)
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183 {
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184 if (device->thread && (SDL_ThreadID() == device->threadid)) {
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185 return;
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186 }
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187 SDL_mutexP(device->mixer_lock);
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188 }
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189
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190 static void
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191 SDL_AudioUnlockDevice_Default(SDL_AudioDevice * device)
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192 {
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193 if (device->thread && (SDL_ThreadID() == device->threadid)) {
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194 return;
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195 }
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196 SDL_mutexV(device->mixer_lock);
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197 }
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198
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199
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200 static void finalize_audio_entry_points(void)
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201 {
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202 /*
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203 * Fill in stub functions for unused driver entry points. This lets us
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204 * blindly call them without having to check for validity first.
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205 */
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206
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207 #define FILL_STUB(x) \
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208 if (current_audio.impl.x == NULL) { \
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209 current_audio.impl.x = SDL_Audio##x##_Default; \
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210 }
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211 FILL_STUB(DetectDevices);
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212 FILL_STUB(GetDeviceName);
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213 FILL_STUB(OpenDevice);
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214 FILL_STUB(ThreadInit);
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215 FILL_STUB(WaitDevice);
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216 FILL_STUB(PlayDevice);
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217 FILL_STUB(GetDeviceBuf);
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218 FILL_STUB(WaitDone);
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219 FILL_STUB(CloseDevice);
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220 FILL_STUB(LockDevice);
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221 FILL_STUB(UnlockDevice);
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222 FILL_STUB(Deinitialize);
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223 #undef FILL_STUB
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224 }
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225
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226
0
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227 /* The general mixing thread function */
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228 int SDLCALL
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229 SDL_RunAudio(void *devicep)
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230 {
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231 SDL_AudioDevice *device = (SDL_AudioDevice *) devicep;
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232 const int legacy_device = (device == open_devices[0]);
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233 Uint8 *stream;
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234 int stream_len;
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235 void *udata;
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236 void (SDLCALL * fill) (void *userdata, Uint8 * stream, int len);
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237 int silence;
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238
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239 /* Perform any thread setup */
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240 device->threadid = SDL_ThreadID();
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241 current_audio.impl.ThreadInit(device);
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242
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243 /* Set up the mixing function */
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244 fill = device->spec.callback;
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245 udata = device->spec.userdata;
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246
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247 if (device->convert.needed) {
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248 if (device->convert.src_format == AUDIO_U8) {
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249 silence = 0x80;
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250 } else {
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251 silence = 0;
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252 }
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253 stream_len = device->convert.len;
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254 } else {
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diff changeset
255 silence = device->spec.silence;
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diff changeset
256 stream_len = device->spec.size;
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257 }
1561
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diff changeset
258
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diff changeset
259 /* Loop, filling the audio buffers */
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diff changeset
260 while (device->enabled) {
0
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261
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diff changeset
262 /* Fill the current buffer with sound */
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diff changeset
263 if (device->convert.needed) {
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diff changeset
264 if (device->convert.buf) {
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diff changeset
265 stream = device->convert.buf;
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266 } else {
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diff changeset
267 continue;
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268 }
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269 } else {
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270 stream = current_audio.impl.GetDeviceBuf(device);
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271 if (stream == NULL) {
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272 stream = device->fake_stream;
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273 }
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274 }
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275
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276 /* New code should fill buffer or set it to silence themselves. */
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277 if (legacy_device) {
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278 SDL_memset(stream, silence, stream_len);
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279 }
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280
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diff changeset
281 if (!device->paused) {
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282 SDL_mutexP(device->mixer_lock);
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283 (*fill) (udata, stream, stream_len);
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284 SDL_mutexV(device->mixer_lock);
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285 }
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286
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287 /* Convert the audio if necessary */
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diff changeset
288 if (device->convert.needed) {
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diff changeset
289 SDL_ConvertAudio(&device->convert);
3792
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diff changeset
290 stream = current_audio.impl.GetDeviceBuf(device);
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diff changeset
291 if (stream == NULL) {
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292 stream = device->fake_stream;
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293 }
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diff changeset
294 SDL_memcpy(stream, device->convert.buf, device->convert.len_cvt);
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295 }
0
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296
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diff changeset
297 /* Ready current buffer for play and change current buffer */
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diff changeset
298 if (stream != device->fake_stream) {
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diff changeset
299 current_audio.impl.PlayDevice(device);
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300 }
1562
1d487a3fab41 Fixed bug #18
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parents: 1561
diff changeset
301
1895
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diff changeset
302 /* Wait for an audio buffer to become available */
3784
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diff changeset
303 if (stream == device->fake_stream) {
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diff changeset
304 SDL_Delay((device->spec.samples * 1000) / device->spec.freq);
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parents: 1794
diff changeset
305 } else {
3792
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Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
306 current_audio.impl.WaitDevice(device);
1895
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diff changeset
307 }
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diff changeset
308 }
1562
1d487a3fab41 Fixed bug #18
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parents: 1561
diff changeset
309
1895
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diff changeset
310 /* Wait for the audio to drain.. */
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
311 current_audio.impl.WaitDone(device);
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
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diff changeset
312
1895
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diff changeset
313 return (0);
0
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parents:
diff changeset
314 }
74212992fb08 Initial revision
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parents:
diff changeset
315
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
316
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
317 static SDL_AudioFormat
1895
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diff changeset
318 SDL_ParseAudioFormat(const char *string)
1794
5605a9820134 Fixed bug #137
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diff changeset
319 {
3781
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
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diff changeset
320 #define CHECK_FMT_STRING(x) if (strcmp(string, #x) == 0) return AUDIO_##x
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
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parents: 2045
diff changeset
321 CHECK_FMT_STRING(U8);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
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diff changeset
322 CHECK_FMT_STRING(S8);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
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parents: 2045
diff changeset
323 CHECK_FMT_STRING(U16LSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
324 CHECK_FMT_STRING(S16LSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
325 CHECK_FMT_STRING(U16MSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
326 CHECK_FMT_STRING(S16MSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
327 CHECK_FMT_STRING(U16SYS);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
328 CHECK_FMT_STRING(S16SYS);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
329 CHECK_FMT_STRING(U16);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
330 CHECK_FMT_STRING(S16);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
331 CHECK_FMT_STRING(S32LSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
332 CHECK_FMT_STRING(S32MSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
333 CHECK_FMT_STRING(S32SYS);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
334 CHECK_FMT_STRING(S32);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
335 CHECK_FMT_STRING(F32LSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
336 CHECK_FMT_STRING(F32MSB);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
337 CHECK_FMT_STRING(F32SYS);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
338 CHECK_FMT_STRING(F32);
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
339 #undef CHECK_FMT_STRING
3a64f57eb3cf Simplified SDL_ParseAudioFormat() and added support for int32/float32 types.
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parents: 2045
diff changeset
340 return 0;
1895
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parents: 1794
diff changeset
341 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1794
diff changeset
342
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
343 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
344 SDL_GetNumAudioDrivers(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1794
diff changeset
345 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1794
diff changeset
346 return (SDL_arraysize(bootstrap) - 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
347 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
348
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
349 const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
350 SDL_GetAudioDriver(int index)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1794
diff changeset
351 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
352 if (index >= 0 && index < SDL_GetNumAudioDrivers()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
353 return (bootstrap[index]->name);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
354 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
355 return (NULL);
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
356 }
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
357
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
358 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
359 SDL_AudioInit(const char *driver_name)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 {
3784
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diff changeset
361 int i = 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
362 int initialized = 0;
3846
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
363 int tried_to_init = 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
365 if (SDL_WasInit(SDL_INIT_AUDIO)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
366 SDL_AudioQuit(); /* shutdown driver if already running. */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1794
diff changeset
367 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
369 SDL_memset(&current_audio, '\0', sizeof (current_audio));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
370 SDL_memset(open_devices, '\0', sizeof (open_devices));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
371
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
372 /* Select the proper audio driver */
1909
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
373 if (driver_name == NULL) {
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
374 driver_name = SDL_getenv("SDL_AUDIODRIVER");
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
375 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
376
3846
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
377 for (i = 0; (!initialized) && (bootstrap[i]); ++i) {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
378 /* make sure we should even try this driver before doing so... */
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
379 const AudioBootStrap *backend = bootstrap[i];
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
380 if ( ((driver_name) && (SDL_strcasecmp(backend->name, driver_name))) ||
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
381 ((!driver_name) && (backend->demand_only)) ) {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
382 continue;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
383 }
3846
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
384
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
385 tried_to_init = 1;
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
386 SDL_memset(&current_audio, 0, sizeof (current_audio));
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
387 current_audio.name = backend->name;
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
388 current_audio.desc = backend->desc;
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
389 initialized = backend->init(&current_audio.impl);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
390 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
391
3804
b12b7ec0dfcc Removed an if (), which lets this code section be a little less cluttered...
Ryan C. Gordon <icculus@icculus.org>
parents: 3803
diff changeset
392 if (!initialized) {
3846
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
393 /* specific drivers will set the error message if they fail... */
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
394 if (!tried_to_init) {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
395 if (driver_name) {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
396 SDL_SetError("%s not available", driver_name);
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
397 } else {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
398 SDL_SetError("No available audio device");
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
399 }
3804
b12b7ec0dfcc Removed an if (), which lets this code section be a little less cluttered...
Ryan C. Gordon <icculus@icculus.org>
parents: 3803
diff changeset
400 }
3846
66fb40445587 Removed distinction between "available" and "init" in audio backends, since
Ryan C. Gordon <icculus@icculus.org>
parents: 3843
diff changeset
401
3804
b12b7ec0dfcc Removed an if (), which lets this code section be a little less cluttered...
Ryan C. Gordon <icculus@icculus.org>
parents: 3803
diff changeset
402 SDL_memset(&current_audio, 0, sizeof (current_audio));
b12b7ec0dfcc Removed an if (), which lets this code section be a little less cluttered...
Ryan C. Gordon <icculus@icculus.org>
parents: 3803
diff changeset
403 return (-1); /* No driver was available, so fail. */
b12b7ec0dfcc Removed an if (), which lets this code section be a little less cluttered...
Ryan C. Gordon <icculus@icculus.org>
parents: 3803
diff changeset
404 }
b12b7ec0dfcc Removed an if (), which lets this code section be a little less cluttered...
Ryan C. Gordon <icculus@icculus.org>
parents: 3803
diff changeset
405
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
406 finalize_audio_entry_points();
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 3792
diff changeset
407
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
408 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
411 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
412 * Get the current audio driver name
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
413 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
414 const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
415 SDL_GetCurrentAudioDriver()
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
417 return current_audio.name;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419
3790
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
420
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
421 int
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
422 SDL_GetNumAudioDevices(int iscapture)
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
423 {
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
424 if (!SDL_WasInit(SDL_INIT_AUDIO)) {
3790
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
425 return -1;
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
426 }
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
427 if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
428 return 0;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
429 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
430
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
431 if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
432 return 1;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
433 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
434
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
435 if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
436 return 1;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
437 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
438
3790
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
439 return current_audio.impl.DetectDevices(iscapture);
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
440 }
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
441
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
442
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
443 const char *
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
444 SDL_GetAudioDeviceName(int index, int iscapture)
3790
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
445 {
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
446 if (!SDL_WasInit(SDL_INIT_AUDIO)) {
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
447 SDL_SetError("Audio subsystem is not initialized");
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
448 return NULL;
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
449 }
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
450
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
451 if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
452 SDL_SetError("No capture support");
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
453 return NULL;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
454 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
455
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
456 if (index < 0) {
3790
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
457 SDL_SetError("No such device");
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
458 return NULL;
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
459 }
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
460
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
461 if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
462 return DEFAULT_INPUT_DEVNAME;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
463 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
464
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
465 if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
466 return DEFAULT_OUTPUT_DEVNAME;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
467 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
468
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
469 return current_audio.impl.GetDeviceName(index, iscapture);
3790
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
470 }
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
471
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
472
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
473 static void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
474 close_audio_device(SDL_AudioDevice *device)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
476 device->enabled = 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
477 if (device->thread != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
478 SDL_WaitThread(device->thread, NULL);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
479 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
480 if (device->mixer_lock != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
481 SDL_DestroyMutex(device->mixer_lock);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
482 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
483 if (device->fake_stream != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
484 SDL_FreeAudioMem(device->fake_stream);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
485 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
486 if (device->convert.needed) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
487 SDL_FreeAudioMem(device->convert.buf);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
488 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
489 if (device->opened) {
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
490 current_audio.impl.CloseDevice(device);
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
491 device->opened = 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
492 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
493 SDL_FreeAudioMem(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
494 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
497 /*
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
498 * Sanity check desired AudioSpec for SDL_OpenAudio() in (orig).
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
499 * Fills in a sanitized copy in (prepared).
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
500 * Returns non-zero if okay, zero on fatal parameters in (orig).
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
501 */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
502 static int
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
503 prepare_audiospec(const SDL_AudioSpec *orig, SDL_AudioSpec *prepared)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
504 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
505 SDL_memcpy(prepared, orig, sizeof (SDL_AudioSpec));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
506
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
507 if (orig->callback == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
508 SDL_SetError("SDL_OpenAudio() passed a NULL callback");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
509 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
510 }
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
511
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
512 if (orig->freq == 0) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
513 const char *env = SDL_getenv("SDL_AUDIO_FREQUENCY");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
514 if ( (!env) || ((prepared->freq = SDL_atoi(env)) == 0) ) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
515 prepared->freq = 22050; /* a reasonable default */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
516 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
517 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
518
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
519 if (orig->format == 0) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
520 const char *env = SDL_getenv("SDL_AUDIO_FORMAT");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
521 if ((!env) || ((prepared->format = SDL_ParseAudioFormat(env)) == 0)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
522 prepared->format = AUDIO_S16; /* a reasonable default */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
523 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
524 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
525
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
526 switch (orig->channels) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
527 case 0: {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
528 const char *env = SDL_getenv("SDL_AUDIO_CHANNELS");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
529 if ( (!env) || ((prepared->channels = SDL_atoi(env)) == 0) ) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
530 prepared->channels = 2; /* a reasonable default */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
531 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
532 break;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
533 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
534 case 1: /* Mono */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
535 case 2: /* Stereo */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
536 case 4: /* surround */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
537 case 6: /* surround with center and lfe */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
538 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
539 default:
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
540 SDL_SetError("Unsupported number of audio channels.");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
541 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
542 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
543
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
544 if (orig->samples == 0) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
545 const char *env = SDL_getenv("SDL_AUDIO_SAMPLES");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
546 if ( (!env) || ((prepared->samples = (Uint16) SDL_atoi(env)) == 0) ) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
547 /* Pick a default of ~46 ms at desired frequency */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
548 /* !!! FIXME: remove this when the non-Po2 resampling is in. */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
549 const int samples = (prepared->freq / 1000) * 46;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
550 int power2 = 1;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
551 while (power2 < samples) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
552 power2 *= 2;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
553 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
554 prepared->samples = power2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
555 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
556 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
557
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
558 /* Calculate the silence and size of the audio specification */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
559 SDL_CalculateAudioSpec(prepared);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
560
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
561 return 1;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
562 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
563
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
564
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
565 static SDL_AudioDeviceID
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
566 open_audio_device(const char *devname, int iscapture,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
567 const SDL_AudioSpec *_desired, SDL_AudioSpec *obtained,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
568 int min_id)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
569 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
570 SDL_AudioDeviceID id = 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
571 SDL_AudioSpec desired;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
572 SDL_AudioDevice *device;
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
573 int i = 0;
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
574
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
575 if (!SDL_WasInit(SDL_INIT_AUDIO)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
576 SDL_SetError("Audio subsystem is not initialized");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
577 return 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
578 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
579
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
580 if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
581 SDL_SetError("No capture support");
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
582 return 0;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
583 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
584
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
585 if (!prepare_audiospec(_desired, &desired)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
586 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
587 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
588
3786
b70f4e9291bb High level now lets user select a specific audio device with an environment
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
589 /* If app doesn't care about a specific device, let the user override. */
b70f4e9291bb High level now lets user select a specific audio device with an environment
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
590 if (devname == NULL) {
b70f4e9291bb High level now lets user select a specific audio device with an environment
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
591 devname = SDL_getenv("SDL_AUDIO_DEVICE_NAME");
b70f4e9291bb High level now lets user select a specific audio device with an environment
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
592 }
b70f4e9291bb High level now lets user select a specific audio device with an environment
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
593
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
594 /*
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
595 * Catch device names at the high level for the simple case...
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
596 * This lets us have a basic "device enumeration" for systems that
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
597 * don't have multiple devices, but makes sure the device name is
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
598 * always NULL when it hits the low level.
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
599 *
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
600 * Also make sure that the simple case prevents multiple simultaneous
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
601 * opens of the default system device.
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
602 */
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
603
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
604 if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
605 if ((devname) && (SDL_strcmp(devname, DEFAULT_INPUT_DEVNAME) != 0)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
606 SDL_SetError("No such device");
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
607 return 0;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
608 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
609 devname = NULL;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
610
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
611 for (i = 0; i < SDL_arraysize(open_devices); i++) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
612 if ((open_devices[i]) && (open_devices[i]->iscapture)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
613 SDL_SetError("Audio device already open");
3840
be9bd1067c6c Some fixes that were discovered when trying to get OS/2 audio working again...
Ryan C. Gordon <icculus@icculus.org>
parents: 3837
diff changeset
614 return 0;
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
615 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
616 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
617 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
618
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
619 if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
620 if ((devname) && (SDL_strcmp(devname, DEFAULT_OUTPUT_DEVNAME) != 0)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
621 SDL_SetError("No such device");
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
622 return 0;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
623 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
624 devname = NULL;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
625
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
626 for (i = 0; i < SDL_arraysize(open_devices); i++) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
627 if ((open_devices[i]) && (!open_devices[i]->iscapture)) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
628 SDL_SetError("Audio device already open");
3840
be9bd1067c6c Some fixes that were discovered when trying to get OS/2 audio working again...
Ryan C. Gordon <icculus@icculus.org>
parents: 3837
diff changeset
629 return 0;
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
630 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
631 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
632 }
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
633
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
634 device = (SDL_AudioDevice *) SDL_AllocAudioMem(sizeof (SDL_AudioDevice));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
635 if (device == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
636 SDL_OutOfMemory();
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
637 return 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
638 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
639 SDL_memset(device, '\0', sizeof (SDL_AudioDevice));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
640 SDL_memcpy(&device->spec, &desired, sizeof (SDL_AudioSpec));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
641 device->enabled = 1;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
642 device->paused = 1;
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
643 device->iscapture = iscapture;
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
644
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
645 /* Create a semaphore for locking the sound buffers */
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
646 if (!current_audio.impl.SkipMixerLock) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
647 device->mixer_lock = SDL_CreateMutex();
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
648 if (device->mixer_lock == NULL) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
649 close_audio_device(device);
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
650 SDL_SetError("Couldn't create mixer lock");
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
651 return 0;
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
652 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
653 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
655 if (!current_audio.impl.OpenDevice(device, devname, iscapture)) {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
656 close_audio_device(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
657 return 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
658 }
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
659 device->opened = 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
660
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
661 /* If the audio driver changes the buffer size, accept it */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
662 if (device->spec.samples != desired.samples) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
663 desired.samples = device->spec.samples;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
664 SDL_CalculateAudioSpec(&device->spec);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
665 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
667 /* Allocate a fake audio memory buffer */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
668 device->fake_stream = SDL_AllocAudioMem(device->spec.size);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
669 if (device->fake_stream == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
670 close_audio_device(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
671 SDL_OutOfMemory();
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
672 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
673 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
674
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
675 /* See if we need to do any conversion */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
676 if (obtained != NULL) {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
677 SDL_memcpy(obtained, &device->spec, sizeof(SDL_AudioSpec));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
678 } else if (desired.freq != device->spec.freq ||
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
679 desired.format != device->spec.format ||
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
680 desired.channels != device->spec.channels) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
681 /* Build an audio conversion block */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
682 if (SDL_BuildAudioCVT(&device->convert,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
683 desired.format, desired.channels,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
684 desired.freq,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
685 device->spec.format, device->spec.channels,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
686 device->spec.freq) < 0) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
687 close_audio_device(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
688 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
689 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
690 if (device->convert.needed) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
691 device->convert.len = desired.size;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
692 device->convert.buf =
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
693 (Uint8 *) SDL_AllocAudioMem(device->convert.len *
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
694 device->convert.len_mult);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
695 if (device->convert.buf == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
696 close_audio_device(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
697 SDL_OutOfMemory();
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
698 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
699 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
700 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
701 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
702
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
703 /* Find an available device ID and store the structure... */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
704 for (id = min_id-1; id < SDL_arraysize(open_devices); id++) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
705 if (open_devices[id] == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
706 open_devices[id] = device;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
707 break;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
708 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
709 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
710
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
711 if (id == SDL_arraysize(open_devices)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
712 SDL_SetError("Too many open audio devices");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
713 close_audio_device(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
714 return 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
715 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
716
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
717 /* Start the audio thread if necessary */
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
718 if (!current_audio.impl.ProvidesOwnCallbackThread) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
719 /* Start the audio thread */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
720 /* !!! FIXME: this is nasty. */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
721 #if (defined(__WIN32__) && !defined(_WIN32_WCE)) && !defined(HAVE_LIBC)
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
722 #undef SDL_CreateThread
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
723 device->thread = SDL_CreateThread(SDL_RunAudio, device, NULL, NULL);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
724 #else
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
725 device->thread = SDL_CreateThread(SDL_RunAudio, device);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
726 #endif
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
727 if (device->thread == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
728 SDL_CloseAudioDevice(id+1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
729 SDL_SetError("Couldn't create audio thread");
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
730 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
731 }
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
732 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
733
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
734 return id+1;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
735 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
736
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
737
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
738 int
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
739 SDL_OpenAudio(const SDL_AudioSpec * desired, SDL_AudioSpec * obtained)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
740 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
741 SDL_AudioDeviceID id = 0;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
742
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
743 /* Start up the audio driver, if necessary. This is legacy behaviour! */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
744 if (!SDL_WasInit(SDL_INIT_AUDIO)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
745 if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
746 return (-1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
747 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
748 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
749
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
750 /* SDL_OpenAudio() is legacy and can only act on Device ID #1. */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
751 if (open_devices[0] != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
752 SDL_SetError("Audio device is already opened");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
753 return (-1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
754 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
755
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
756 id = open_audio_device(NULL, 0, desired, obtained, 1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
757 if (id > 1) { /* this should never happen in theory... */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
758 SDL_CloseAudioDevice(id);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
759 SDL_SetError("Internal error"); /* MUST be Device ID #1! */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
760 return (-1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
761 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
762
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
763 return ((id == 0) ? -1 : 0);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
764 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
765
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
766 SDL_AudioDeviceID
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
767 SDL_OpenAudioDevice(const char *device, int iscapture,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
768 const SDL_AudioSpec *desired, SDL_AudioSpec *obtained)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
769 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
770 return open_audio_device(device, iscapture, desired, obtained, 2);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
771 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
772
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
773 SDL_audiostatus
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
774 SDL_GetAudioDeviceStatus(SDL_AudioDeviceID devid)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
775 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
776 SDL_AudioDevice *device = get_audio_device(devid);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
777 SDL_audiostatus status = SDL_AUDIO_STOPPED;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
778 if (device && device->enabled) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
779 if (device->paused) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
780 status = SDL_AUDIO_PAUSED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
781 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
782 status = SDL_AUDIO_PLAYING;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
783 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
784 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
785 return (status);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
786 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
787
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
788
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
789 SDL_audiostatus
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
790 SDL_GetAudioStatus(void)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
791 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
792 return SDL_GetAudioDeviceStatus(1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
793 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
794
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
795 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
796 SDL_PauseAudioDevice(SDL_AudioDeviceID devid, int pause_on)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
797 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
798 SDL_AudioDevice *device = get_audio_device(devid);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
799 if (device) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
800 device->paused = pause_on;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
801 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
802 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
803
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
804 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
805 SDL_PauseAudio(int pause_on)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
806 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
807 SDL_PauseAudioDevice(1, pause_on);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
808 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
809
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
810
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
811 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
812 SDL_LockAudioDevice(SDL_AudioDeviceID devid)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
813 {
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
814 /* Obtain a lock on the mixing buffers */
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
815 SDL_AudioDevice *device = get_audio_device(devid);
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
816 if (device) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
817 current_audio.impl.LockDevice(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
818 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
819 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
821 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
822 SDL_LockAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
824 SDL_LockAudioDevice(1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
825 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
826
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
827 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
828 SDL_UnlockAudioDevice(SDL_AudioDeviceID devid)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
829 {
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
830 /* Obtain a lock on the mixing buffers */
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
831 SDL_AudioDevice *device = get_audio_device(devid);
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
832 if (device) {
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
833 current_audio.impl.UnlockDevice(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
834 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
835 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
836
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
837 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
838 SDL_UnlockAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
839 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
840 SDL_UnlockAudioDevice(1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
841 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
842
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
843 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
844 SDL_CloseAudioDevice(SDL_AudioDeviceID devid)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
845 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
846 SDL_AudioDevice *device = get_audio_device(devid);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
847 if (device) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
848 close_audio_device(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
849 open_devices[devid-1] = NULL;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
850 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
851 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
852
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
853 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
854 SDL_CloseAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
855 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
856 SDL_CloseAudioDevice(1);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
857 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
858
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
859 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
860 SDL_AudioQuit(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
861 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
862 SDL_AudioDeviceID i;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
863 for (i = 0; i < SDL_arraysize(open_devices); i++) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
864 SDL_CloseAudioDevice(i);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
865 }
3787
8d74a4721ca9 Added deinitialize hook.
Ryan C. Gordon <icculus@icculus.org>
parents: 3786
diff changeset
866
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
867 /* Free the driver data */
3788
7006b176ef4f More work on the 1.3 CoreAudio code.
Ryan C. Gordon <icculus@icculus.org>
parents: 3787
diff changeset
868 current_audio.impl.Deinitialize();
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
869 SDL_memset(&current_audio, '\0', sizeof (current_audio));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
870 SDL_memset(open_devices, '\0', sizeof (open_devices));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
873 #define NUM_FORMATS 10
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
874 static int format_idx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
875 static int format_idx_sub;
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
876 static SDL_AudioFormat format_list[NUM_FORMATS][NUM_FORMATS] = {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
877 {AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB,
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
878 AUDIO_U16MSB, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB},
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
879 {AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB,
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
880 AUDIO_U16MSB, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB},
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
881 {AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S32LSB,
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
882 AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_U8, AUDIO_S8},
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
883 {AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S32MSB,
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
884 AUDIO_S32LSB, AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_U8, AUDIO_S8},
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
885 {AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_S32LSB,
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
886 AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_U8, AUDIO_S8},
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
887 {AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_S32MSB,
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
888 AUDIO_S32LSB, AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_U8, AUDIO_S8},
1993
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
889 {AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_S16LSB,
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
890 AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8},
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
891 {AUDIO_S32MSB, AUDIO_S32LSB, AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_S16MSB,
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
892 AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8},
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
893 {AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_S16LSB,
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
894 AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8},
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
895 {AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_S32MSB, AUDIO_S32LSB, AUDIO_S16MSB,
7a3889fc9e5d Reordered the favored audio format list a little.
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
896 AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8},
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
897 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
898
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
899 SDL_AudioFormat
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
900 SDL_FirstAudioFormat(SDL_AudioFormat format)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
901 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
902 for (format_idx = 0; format_idx < NUM_FORMATS; ++format_idx) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
903 if (format_list[format_idx][0] == format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
904 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
905 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
906 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
907 format_idx_sub = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
908 return (SDL_NextAudioFormat());
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
909 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
910
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
911 SDL_AudioFormat
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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912 SDL_NextAudioFormat(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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913 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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914 if ((format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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915 return (0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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916 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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917 return (format_list[format_idx][format_idx_sub++]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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918 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
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919
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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920 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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921 SDL_CalculateAudioSpec(SDL_AudioSpec * spec)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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922 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1794
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923 switch (spec->format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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924 case AUDIO_U8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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925 spec->silence = 0x80;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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926 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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927 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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928 spec->silence = 0x00;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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929 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
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930 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
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931 spec->size = SDL_AUDIO_BITSIZE(spec->format) / 8;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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932 spec->size *= spec->channels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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933 spec->size *= spec->samples;
0
74212992fb08 Initial revision
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934 }
1895
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935
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
936
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
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937 /*
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
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938 * Moved here from SDL_mixer.c, since it relies on internals of an opened
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
939 * audio device (and is deprecated, by the way!).
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
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940 */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
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941 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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942 SDL_MixAudio(Uint8 * dst, const Uint8 * src, Uint32 len, int volume)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
943 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
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944 /* Mix the user-level audio format */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
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945 SDL_AudioDevice *device = get_audio_device(1);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
946 if (device != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
947 SDL_AudioFormat format;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
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948 if (device->convert.needed) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
949 format = device->convert.src_format;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
950 } else {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
951 format = device->spec.format;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
952 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
953 SDL_MixAudioFormat(dst, src, format, len, volume);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
954 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
955 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
956
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957 /* vi: set ts=4 sw=4 expandtab: */