annotate src/audio/SDL_audio.c @ 3788:7006b176ef4f SDL-ryan-multiple-audio-device

More work on the 1.3 CoreAudio code.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 03 Oct 2006 18:32:34 +0000
parents 8d74a4721ca9
children 8f8209f8da6d
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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 #ifdef __OS2__
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32 /* We'll need the DosSetPriority() API! */
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33 #define INCL_DOSPROCESS
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34 #include <os2.h>
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35 #endif
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36
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37 static SDL_AudioDriver current_audio;
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38
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39 /* !!! FIXME: don't use a static array, but it's Good Enough For Now... */
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40 static SDL_AudioDevice *open_devices[16];
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41
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42
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43 /* Available audio drivers */
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44 static AudioBootStrap *bootstrap[] = {
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45 #if SDL_AUDIO_DRIVER_BSD
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46 &BSD_AUDIO_bootstrap,
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47 #endif
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48 #if SDL_AUDIO_DRIVER_OSS
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49 &DSP_bootstrap,
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50 &DMA_bootstrap,
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51 #endif
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52 #if SDL_AUDIO_DRIVER_ALSA
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53 &ALSA_bootstrap,
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54 #endif
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55 #if SDL_AUDIO_DRIVER_QNXNTO
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56 &QNXNTOAUDIO_bootstrap,
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57 #endif
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58 #if SDL_AUDIO_DRIVER_SUNAUDIO
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59 &SUNAUDIO_bootstrap,
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60 #endif
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61 #if SDL_AUDIO_DRIVER_DMEDIA
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62 &DMEDIA_bootstrap,
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63 #endif
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64 #if SDL_AUDIO_DRIVER_ARTS
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65 &ARTS_bootstrap,
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66 #endif
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67 #if SDL_AUDIO_DRIVER_ESD
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68 &ESD_bootstrap,
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69 #endif
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70 #if SDL_AUDIO_DRIVER_NAS
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71 &NAS_bootstrap,
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72 #endif
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73 #if SDL_AUDIO_DRIVER_DSOUND
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74 &DSOUND_bootstrap,
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75 #endif
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76 #if SDL_AUDIO_DRIVER_WAVEOUT
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77 &WAVEOUT_bootstrap,
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78 #endif
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79 #if SDL_AUDIO_DRIVER_PAUD
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80 &Paud_bootstrap,
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81 #endif
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82 #if SDL_AUDIO_DRIVER_BAUDIO
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83 &BAUDIO_bootstrap,
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84 #endif
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85 #if SDL_AUDIO_DRIVER_COREAUDIO
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86 &COREAUDIO_bootstrap,
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87 #endif
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88 #if SDL_AUDIO_DRIVER_SNDMGR
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89 &SNDMGR_bootstrap,
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90 #endif
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91 #if SDL_AUDIO_DRIVER_AHI
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92 &AHI_bootstrap,
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93 #endif
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94 #if SDL_AUDIO_DRIVER_MINT
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95 &MINTAUDIO_GSXB_bootstrap,
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96 &MINTAUDIO_MCSN_bootstrap,
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97 &MINTAUDIO_STFA_bootstrap,
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98 &MINTAUDIO_XBIOS_bootstrap,
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99 &MINTAUDIO_DMA8_bootstrap,
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100 #endif
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101 #if SDL_AUDIO_DRIVER_DISK
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102 &DISKAUD_bootstrap,
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103 #endif
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104 #if SDL_AUDIO_DRIVER_DUMMY
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105 &DUMMYAUD_bootstrap,
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106 #endif
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107 #if SDL_AUDIO_DRIVER_DC
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108 &DCAUD_bootstrap,
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109 #endif
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110 #if SDL_AUDIO_DRIVER_MMEAUDIO
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111 &MMEAUDIO_bootstrap,
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112 #endif
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113 #if SDL_AUDIO_DRIVER_DART
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114 &DART_bootstrap,
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115 #endif
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116 NULL
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117 };
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118
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119 #if SDL_AUDIO_DRIVER_AHI
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120 static int audio_configured = 0;
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121 #endif
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122
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123 static SDL_AudioDevice *get_audio_device(SDL_AudioDeviceID id)
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124 {
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125 id--;
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126 if ( (id >= SDL_arraysize(open_devices)) || (open_devices[id] == NULL) ) {
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127 SDL_SetError("Invalid audio device ID");
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128 return NULL;
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129 }
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130
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131 return open_devices[id];
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132 }
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133
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134
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135 /* The general mixing thread function */
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136 int SDLCALL
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137 SDL_RunAudio(void *devicep)
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138 {
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139 SDL_AudioDevice *device = (SDL_AudioDevice *) devicep;
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140 const int legacy_device = (device == open_devices[0]);
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141 Uint8 *stream;
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142 int stream_len;
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143 void *udata;
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144 void (SDLCALL * fill) (void *userdata, Uint8 * stream, int len);
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145 int silence;
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146
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147 /* !!! FIXME: can we push this into the Amiga driver? */
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148 #if SDL_AUDIO_DRIVER_AHI
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149 #error this is probably broken.
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150 int started = 0;
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151
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152 /* AmigaOS NEEDS that the audio driver is opened in the thread that uses it! */
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153
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154 D(bug("Task audio started audio struct:<%lx>...\n", audiop));
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155
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156 D(bug("Before Openaudio..."));
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157 if (audio->OpenAudio(audio, &audio->spec) == -1) {
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158 D(bug("Open audio failed...\n"));
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159 return (-1);
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160 }
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161 D(bug("OpenAudio...OK\n"));
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162 #endif
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163
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164 /* Perform any thread setup */
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165 if (current_audio.impl.ThreadInit != NULL) {
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166 current_audio.impl.ThreadInit(device);
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167 }
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168 device->threadid = SDL_ThreadID();
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169
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170 /* Set up the mixing function */
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171 fill = device->spec.callback;
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172 udata = device->spec.userdata;
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173
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174 #if SDL_AUDIO_DRIVER_AHI
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175 audio_configured = 1;
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176
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177 D(bug("Audio configured... Checking for conversion\n"));
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178 SDL_mutexP(audio->mixer_lock);
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179 D(bug("Semaphore obtained...\n"));
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180 #endif
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181
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182 if (device->convert.needed) {
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183 if (device->convert.src_format == AUDIO_U8) {
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184 silence = 0x80;
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185 } else {
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186 silence = 0;
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187 }
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188 stream_len = device->convert.len;
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189 } else {
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190 silence = device->spec.silence;
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191 stream_len = device->spec.size;
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192 }
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193
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194 #if SDL_AUDIO_DRIVER_AHI
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195 SDL_mutexV(device->mixer_lock);
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196 D(bug("Entering audio loop...\n"));
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197 #endif
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198
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199 /* !!! FIXME: push this out of core. */
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200 #ifdef __OS2__
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201 /* Increase the priority of this thread to make sure that
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202 the audio will be continuous all the time! */
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203 #ifdef USE_DOSSETPRIORITY
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204 if (SDL_getenv("SDL_USE_TIMECRITICAL_AUDIO")) {
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205 #ifdef DEBUG_BUILD
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206 printf
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207 ("[SDL_RunAudio] : Setting priority to TimeCritical+0! (TID%d)\n",
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208 SDL_ThreadID());
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209 #endif
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210 DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0);
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211 } else {
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212 #ifdef DEBUG_BUILD
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213 printf
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214 ("[SDL_RunAudio] : Setting priority to ForegroundServer+0! (TID%d)\n",
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215 SDL_ThreadID());
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216 #endif
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217 DosSetPriority(PRTYS_THREAD, PRTYC_FOREGROUNDSERVER, 0, 0);
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218 }
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219 #endif
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220 #endif
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221
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222 /* Loop, filling the audio buffers */
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223 while (device->enabled) {
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224
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225 /* Fill the current buffer with sound */
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226 if (device->convert.needed) {
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227 if (device->convert.buf) {
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228 stream = device->convert.buf;
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229 } else {
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230 continue;
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231 }
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232 } else {
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233 stream = current_audio.impl.GetAudioBuf(device);
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234 if (stream == NULL) {
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235 stream = device->fake_stream;
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236 }
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237 }
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238
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239 /* New code should fill buffer or set it to silence themselves. */
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240 if (legacy_device) {
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241 SDL_memset(stream, silence, stream_len);
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242 }
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243
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244 if (!device->paused) {
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245 SDL_mutexP(device->mixer_lock);
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246 (*fill) (udata, stream, stream_len);
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247 SDL_mutexV(device->mixer_lock);
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248 }
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249
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250 /* Convert the audio if necessary */
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251 if (device->convert.needed) {
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252 SDL_ConvertAudio(&device->convert);
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253 stream = current_audio.impl.GetAudioBuf(device);
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254 if (stream == NULL) {
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255 stream = device->fake_stream;
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256 }
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257 SDL_memcpy(stream, device->convert.buf, device->convert.len_cvt);
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258 }
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259
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260 /* Ready current buffer for play and change current buffer */
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261 if (stream != device->fake_stream) {
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262 current_audio.impl.PlayAudio(device);
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263 }
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264
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265 /* Wait for an audio buffer to become available */
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266 if (stream == device->fake_stream) {
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267 SDL_Delay((device->spec.samples * 1000) / device->spec.freq);
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268 } else {
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269 current_audio.impl.WaitAudio(device);
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270 }
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271 }
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272
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273 /* Wait for the audio to drain.. */
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274 if (current_audio.impl.WaitDone) {
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275 current_audio.impl.WaitDone(device);
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276 }
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d910939febfa Use consistent identifiers for the various platforms we support.
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277 #if SDL_AUDIO_DRIVER_AHI
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278 D(bug("WaitAudio...Done\n"));
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279
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280 audio->CloseAudio(audio);
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281
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282 D(bug("CloseAudio..Done, subtask exiting...\n"));
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283 audio_configured = 0;
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284 #endif
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diff changeset
285 #ifdef __OS2__
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286 #ifdef DEBUG_BUILD
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287 printf("[SDL_RunAudio] : Task exiting. (TID%d)\n", SDL_ThreadID());
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288 #endif
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289 #endif
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290 return (0);
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291 }
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292
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293 static void
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294 SDL_LockAudio_Default(SDL_AudioDevice * audio)
322
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295 {
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296 if (audio->thread && (SDL_ThreadID() == audio->threadid)) {
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297 return;
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298 }
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299 SDL_mutexP(audio->mixer_lock);
322
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300 }
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301
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302 static void
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303 SDL_UnlockAudio_Default(SDL_AudioDevice * audio)
322
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304 {
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305 if (audio->thread && (SDL_ThreadID() == audio->threadid)) {
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306 return;
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307 }
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308 SDL_mutexV(audio->mixer_lock);
322
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309 }
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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310
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
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311 static SDL_AudioFormat
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312 SDL_ParseAudioFormat(const char *string)
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diff changeset
313 {
3781
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314 #define CHECK_FMT_STRING(x) if (strcmp(string, #x) == 0) return AUDIO_##x
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315 CHECK_FMT_STRING(U8);
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316 CHECK_FMT_STRING(S8);
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317 CHECK_FMT_STRING(U16LSB);
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318 CHECK_FMT_STRING(S16LSB);
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319 CHECK_FMT_STRING(U16MSB);
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320 CHECK_FMT_STRING(S16MSB);
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321 CHECK_FMT_STRING(U16SYS);
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322 CHECK_FMT_STRING(S16SYS);
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323 CHECK_FMT_STRING(U16);
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324 CHECK_FMT_STRING(S16);
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325 CHECK_FMT_STRING(S32LSB);
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326 CHECK_FMT_STRING(S32MSB);
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327 CHECK_FMT_STRING(S32SYS);
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328 CHECK_FMT_STRING(S32);
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329 CHECK_FMT_STRING(F32LSB);
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330 CHECK_FMT_STRING(F32MSB);
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331 CHECK_FMT_STRING(F32SYS);
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332 CHECK_FMT_STRING(F32);
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diff changeset
333 #undef CHECK_FMT_STRING
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334 return 0;
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335 }
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336
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337 int
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338 SDL_GetNumAudioDrivers(void)
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diff changeset
339 {
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340 return (SDL_arraysize(bootstrap) - 1);
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341 }
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diff changeset
342
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diff changeset
343 const char *
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diff changeset
344 SDL_GetAudioDriver(int index)
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diff changeset
345 {
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diff changeset
346 if (index >= 0 && index < SDL_GetNumAudioDrivers()) {
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diff changeset
347 return (bootstrap[index]->name);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
348 }
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diff changeset
349 return (NULL);
1794
5605a9820134 Fixed bug #137
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diff changeset
350 }
5605a9820134 Fixed bug #137
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parents: 1769
diff changeset
351
1895
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diff changeset
352 int
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diff changeset
353 SDL_AudioInit(const char *driver_name)
0
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diff changeset
354 {
3784
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diff changeset
355 int i = 0;
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diff changeset
356 int initialized = 0;
0
74212992fb08 Initial revision
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diff changeset
357
3784
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diff changeset
358 if (SDL_WasInit(SDL_INIT_AUDIO)) {
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diff changeset
359 SDL_AudioQuit(); /* shutdown driver if already running. */
1895
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diff changeset
360 }
0
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diff changeset
361
3784
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diff changeset
362 SDL_memset(&current_audio, '\0', sizeof (current_audio));
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diff changeset
363 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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diff changeset
364
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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diff changeset
365 /* !!! FIXME: build a priority list of available drivers... */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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diff changeset
366
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diff changeset
367 /* 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
368 if (driver_name == NULL) {
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
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parents: 1903
diff changeset
369 driver_name = SDL_getenv("SDL_AUDIODRIVER");
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
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diff changeset
370 }
3784
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diff changeset
371
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diff changeset
372 /* !!! FIXME: move this esound shite into the esound driver... */
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
373 #if SDL_AUDIO_DRIVER_ESD
1895
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diff changeset
374 if ((driver_name == NULL) && (SDL_getenv("ESPEAKER") != NULL)) {
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
375 /* Ahem, we know that if ESPEAKER is set, user probably wants
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
376 to use ESD, but don't start it if it's not already running.
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
377 This probably isn't the place to do this, but... Shh! :)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
378 */
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diff changeset
379 for (i = 0; bootstrap[i]; ++i) {
2045
510892a215a2 Replaced strncmp for SDL_AUDIODRIVER test with strcasecmp.
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parents: 1993
diff changeset
380 if (SDL_strcasecmp(bootstrap[i]->name, "esd") == 0) {
1341
d02b552e5304 Configure dynamically generates SDL_config.h
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parents: 1336
diff changeset
381 #ifdef HAVE_PUTENV
1895
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diff changeset
382 const char *esd_no_spawn;
0
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diff changeset
383
1895
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diff changeset
384 /* Don't start ESD if it's not running */
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diff changeset
385 esd_no_spawn = getenv("ESD_NO_SPAWN");
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
386 if (esd_no_spawn == NULL) {
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
387 putenv("ESD_NO_SPAWN=1");
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
388 }
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
389 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
390 if (bootstrap[i]->available()) {
3784
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diff changeset
391 SDL_memset(&current_audio, 0, sizeof (current_audio));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
diff changeset
392 current_audio.name = bootstrap[i]->name;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
393 current_audio.desc = bootstrap[i]->desc;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
394 initialized = bootstrap[i]->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
395 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
396 }
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
397 #ifdef HAVE_UNSETENV
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
398 if (esd_no_spawn == NULL) {
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
399 unsetenv("ESD_NO_SPAWN");
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
400 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 #endif
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
402 }
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
403 }
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
404 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
405 #endif /* SDL_AUDIO_DRIVER_ESD */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
406
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
407 if (!initialized) {
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 if (driver_name != NULL) {
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
409 for (i = 0; bootstrap[i]; ++i) {
2045
510892a215a2 Replaced strncmp for SDL_AUDIODRIVER test with strcasecmp.
Ryan C. Gordon <icculus@icculus.org>
parents: 1993
diff changeset
410 if (SDL_strcasecmp(bootstrap[i]->name, driver_name) == 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
411 if (bootstrap[i]->available()) {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
412 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
413 current_audio.name = bootstrap[i]->name;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
414 current_audio.desc = bootstrap[i]->desc;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
415 initialized = bootstrap[i]->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
416 }
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
417 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
418 }
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
419 }
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
420 } 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
421 for (i = 0; (!initialized) && (bootstrap[i]); ++i) {
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
422 if (bootstrap[i]->available()) {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
423 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
424 current_audio.name = bootstrap[i]->name;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
425 current_audio.desc = bootstrap[i]->desc;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
426 initialized = bootstrap[i]->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
427 }
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
428 }
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
429 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
430 if (!initialized) {
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
431 if (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
432 SDL_SetError("%s not available", 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
433 } 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
434 SDL_SetError("No available audio device");
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
435 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
436 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
437 return (-1); /* No driver was available, so fail. */
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
438 }
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
439 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
440
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
441 if (!current_audio.impl.LockAudio && !current_audio.impl.UnlockAudio) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
442 current_audio.impl.LockAudio = SDL_LockAudio_Default;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
443 current_audio.impl.UnlockAudio = SDL_UnlockAudio_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
444 }
3787
8d74a4721ca9 Added deinitialize hook.
Ryan C. Gordon <icculus@icculus.org>
parents: 3786
diff changeset
445
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
446 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448
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
449 /*
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
450 * 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
451 */
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
452 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
453 SDL_GetCurrentAudioDriver()
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
455 return current_audio.name;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
458 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
459 close_audio_device(SDL_AudioDevice *device)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
461 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
462 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
463 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
464 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
465 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
466 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
467 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
468 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
469 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
470 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
471 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
472 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
473 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
474 #if !SDL_AUDIO_DRIVER_AHI /* !!! FIXME: get rid of this #if. */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
475 if (device->opened) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
476 current_audio.impl.CloseAudio(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
477 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
478 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
479 #endif
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
480 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
481 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
484 /*
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
485 * 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
486 * 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
487 * 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
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 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
490 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
491 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
492 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
493
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
494 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
495 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
496 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
497 }
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
498
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
499 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
500 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
501 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
502 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
503 }
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
504 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
505
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
506 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
507 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
508 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
509 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
510 }
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
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
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
513 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
514 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
515 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
516 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
517 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
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 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
520 }
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
521 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
522 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
523 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
524 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
525 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
526 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
527 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
528 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
529 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
530
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
531 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
532 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
533 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
534 /* 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
535 /* !!! 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
536 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
537 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
538 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
539 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
540 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
541 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
542 }
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
543 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
544
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
545 /* 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
546 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
547
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
548 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
549 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
550
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
551
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
552 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
553 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
554 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
555 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
556 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
557 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
558 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
559 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
560 SDL_AudioDevice *device;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
561
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
562 if (iscapture) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
563 SDL_SetError("Audio capture support not implemented yet!");
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
564 return 0; /* !!! FIXME */
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
565 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
566
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
567 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
568 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
569 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
570 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
571
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
572 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
573 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
574 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
575
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
576 /* 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
577 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
578 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
579 }
b70f4e9291bb High level now lets user select a specific audio device with an environment
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
580
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
581 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
582 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
583 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
584 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
585 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
586 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
587 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
588 device->driver = &current_audio; /* !!! FIXME: unused... */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
589 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
590 device->paused = 1;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
591
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
592 /* !!! FIXME: Get this out of the core. */
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
593 #if defined(__MINT__) && SDL_THREADS_DISABLED
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
594 /* Uses interrupt driven audio, without thread */
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
595 #else
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
596 /* Create a semaphore for locking the sound buffers */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
597 device->mixer_lock = SDL_CreateMutex();
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
598 if (device->mixer_lock == 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
599 SDL_SetError("Couldn't create mixer lock");
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
600 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
601 }
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
602 #endif /* __MINT__ */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
604 /* !!! FIXME: Get this #if out of the core. */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
605 /* AmigaOS opens audio inside the main loop */
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
606 #if !SDL_AUDIO_DRIVER_AHI
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
607 if (!current_audio.impl.OpenAudio(device, devname, iscapture)) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
608 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
609 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
610 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
611 device->opened = 2; /* !!! FIXME */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
612 #else
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
613 # error needs to be fixed for new internal API. Email Ryan for details.
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
614
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
615 D(bug("Locking semaphore..."));
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
616 SDL_mutexP(audio->mixer_lock);
1408
ceb5c2fec4f1 Fixed some preprocessor mangling
Sam Lantinga <slouken@libsdl.org>
parents: 1406
diff changeset
617
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
618
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
619 audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
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
620 D(bug("Created thread...\n"));
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
621
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
622 if (audio->thread == NULL) {
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
623 SDL_mutexV(audio->mixer_lock);
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
624 SDL_CloseAudio();
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
625 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
626 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
627 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
628
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
629 while (!audio_configured)
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
630 SDL_Delay(100);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
631 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632
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
633 /* 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
634 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
635 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
636 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
637 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638
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
639 /* 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
640 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
641 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
642 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
643 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
644 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
645 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646
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
647 /* 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
648 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
649 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
650 } 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
651 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
652 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
653 /* 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
654 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
655 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
656 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
657 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
658 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
659 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
660 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
661 }
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->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
663 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
664 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
665 (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
666 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
667 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
668 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
669 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
670 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
671 }
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
672 }
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 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
674
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
675 /* 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
676 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
677 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
678 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
679 break;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
680 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
681 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
682
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
683 /* !!! FIXME: remove static array... */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
684 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
685 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
686 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
687 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
688 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
689
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
690 #if !SDL_AUDIO_DRIVER_AHI
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
691 /* Start the audio thread if necessary */
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
692 switch (device->opened) { /* !!! FIXME: what is this?! */
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
693 case 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
694 /* 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
695 /* !!! FIXME: this is nasty. */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
696 #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
697 #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
698 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
699 #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
700 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
701 #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
702 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
703 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
704 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
705 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
706 }
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
707 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
708
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
709 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
diff changeset
710 /* The audio is now 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
711 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
712 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
713 #else
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
714 SDL_mutexV(audio->mixer_lock);
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
715 D(bug("SDL_OpenAudio USCITA...\n"));
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
716
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
717 #endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
718
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
719 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
720 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
721
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
722
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
723 int
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
724 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
725 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
726 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
727
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
728 /* 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
729 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
730 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
731 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
732 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
733 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
734
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
735 /* 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
736 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
737 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
738 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
739 }
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 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
742 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
743 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
744 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
745 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
746 }
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 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
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
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
751 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
752 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
753 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
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 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
756 }
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
757
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
758 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
759 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
760 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
761 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
762 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
763 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
764 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
765 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
766 } 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
767 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
768 }
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
769 }
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
770 return (status);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
771 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
772
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
773
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_audiostatus
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
775 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
776 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
777 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
778 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
779
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
780 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
781 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
782 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
783 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
784 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
785 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
786 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
787 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
788
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
789 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
790 SDL_PauseAudio(int pause_on)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
792 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
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
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
796 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
797 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
798 {
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 (current_audio.impl.LockAudio != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
800 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
801 /* Obtain a lock on the mixing buffers */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
802 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
803 current_audio.impl.LockAudio(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
804 }
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
805 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
806 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
807
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
808 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
809 SDL_LockAudio(void)
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 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
812 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
813
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
814 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
815 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
816 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
817 if (current_audio.impl.UnlockAudio != NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
818 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
819 /* Obtain a lock on the mixing buffers */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
820 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
821 current_audio.impl.UnlockAudio(device);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
822 }
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
823 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
824 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
825
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
826 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
827 SDL_UnlockAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
828 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
829 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
830 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
831
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
832 void
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
833 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
834 {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
835 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
836 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
837 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
838 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
839 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
840 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
841
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
842 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
843 SDL_CloseAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
844 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
845 SDL_CloseAudioDevice(1);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
846 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
847
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
848 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
849 SDL_AudioQuit(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
850 {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
851 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
852 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
853 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
854 }
3787
8d74a4721ca9 Added deinitialize hook.
Ryan C. Gordon <icculus@icculus.org>
parents: 3786
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 /* Free the driver data */
3788
7006b176ef4f More work on the 1.3 CoreAudio code.
Ryan C. Gordon <icculus@icculus.org>
parents: 3787
diff changeset
857 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
858 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
859 SDL_memset(open_devices, '\0', sizeof (open_devices));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
860 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
861
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
862 #define NUM_FORMATS 10
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
863 static int format_idx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
864 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
865 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
866 {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
867 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
868 {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
869 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
870 {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
871 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
872 {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
873 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
874 {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
875 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
876 {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
877 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
878 {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
879 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
880 {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
881 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
882 {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
883 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
884 {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
885 AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8},
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
886 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
887
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
888 SDL_AudioFormat
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
889 SDL_FirstAudioFormat(SDL_AudioFormat format)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
890 {
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
891 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
892 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
893 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
894 }
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
895 }
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
896 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
897 return (SDL_NextAudioFormat());
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
898 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
899
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
900 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>
parents: 1794
diff changeset
901 SDL_NextAudioFormat(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
902 {
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
903 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
diff changeset
904 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
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 return (format_list[format_idx][format_idx_sub++]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
907 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
908
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
909 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
910 SDL_CalculateAudioSpec(SDL_AudioSpec * spec)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
911 {
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
912 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
diff changeset
913 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
diff changeset
914 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>
parents: 1794
diff changeset
915 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
916 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
diff changeset
917 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>
parents: 1794
diff changeset
918 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
919 }
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
920 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.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
921 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>
parents: 1794
diff changeset
922 spec->size *= spec->samples;
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diff changeset
923 }
1895
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924
3784
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925
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926 /*
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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927 * 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.
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928 * audio device (and is deprecated, by the way!).
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parents: 3781
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929 */
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930 void
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931 SDL_MixAudio(Uint8 * dst, const Uint8 * src, Uint32 len, int volume)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 3781
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932 {
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parents: 3781
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933 /* Mix the user-level audio format */
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parents: 3781
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934 SDL_AudioDevice *device = get_audio_device(1);
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parents: 3781
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935 if (device != NULL) {
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diff changeset
936 SDL_AudioFormat format;
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parents: 3781
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937 if (device->convert.needed) {
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diff changeset
938 format = device->convert.src_format;
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parents: 3781
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939 } else {
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parents: 3781
diff changeset
940 format = device->spec.format;
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parents: 3781
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941 }
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parents: 3781
diff changeset
942 SDL_MixAudioFormat(dst, src, format, len, volume);
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Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
943 }
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Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
944 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 3781
diff changeset
945
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parents: 1794
diff changeset
946 /* vi: set ts=4 sw=4 expandtab: */