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annotate src/audio/SDL_audio.c @ 1695:7179cb72dbba SDL-1.3

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Date: Fri, 9 Jun 2006 11:35:23 +0300 From: "Janne Junnila" Subject: [SDL] SDL_SetGamma bug You can't set the the gamma 'brighter' than 1.0. There's a patch attached.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 20 Jun 2006 06:51:23 +0000
parents 4da1ee79c9af
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Allow access to a raw mixing buffer */
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25
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26 #include "SDL.h"
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27 #include "SDL_audio_c.h"
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28 #include "SDL_audiomem.h"
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29 #include "SDL_sysaudio.h"
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30
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31 #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 /* Available audio drivers */
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38 static AudioBootStrap *bootstrap[] = {
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39 #if SDL_AUDIO_DRIVER_BSD
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40 &BSD_AUDIO_bootstrap,
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41 #endif
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42 #if SDL_AUDIO_DRIVER_OSS
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43 &DSP_bootstrap,
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44 &DMA_bootstrap,
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45 #endif
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46 #if SDL_AUDIO_DRIVER_ALSA
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47 &ALSA_bootstrap,
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48 #endif
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49 #if SDL_AUDIO_DRIVER_QNXNTO
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50 &QNXNTOAUDIO_bootstrap,
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51 #endif
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52 #if SDL_AUDIO_DRIVER_SUNAUDIO
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53 &SUNAUDIO_bootstrap,
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54 #endif
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55 #if SDL_AUDIO_DRIVER_DMEDIA
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56 &DMEDIA_bootstrap,
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57 #endif
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58 #if SDL_AUDIO_DRIVER_ARTS
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59 &ARTS_bootstrap,
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60 #endif
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61 #if SDL_AUDIO_DRIVER_ESD
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62 &ESD_bootstrap,
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63 #endif
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64 #if SDL_AUDIO_DRIVER_NAS
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65 &NAS_bootstrap,
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66 #endif
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67 #if SDL_AUDIO_DRIVER_DSOUND
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68 &DSOUND_bootstrap,
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69 #endif
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70 #if SDL_AUDIO_DRIVER_WAVEOUT
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71 &WAVEOUT_bootstrap,
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72 #endif
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73 #if SDL_AUDIO_DRIVER_PAUD
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74 &Paud_bootstrap,
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75 #endif
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76 #if SDL_AUDIO_DRIVER_BAUDIO
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77 &BAUDIO_bootstrap,
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78 #endif
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79 #if SDL_AUDIO_DRIVER_COREAUDIO
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80 &COREAUDIO_bootstrap,
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81 #endif
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82 #if SDL_AUDIO_DRIVER_SNDMGR
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83 &SNDMGR_bootstrap,
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84 #endif
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85 #if SDL_AUDIO_DRIVER_AHI
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86 &AHI_bootstrap,
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87 #endif
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88 #if SDL_AUDIO_DRIVER_MINT
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89 &MINTAUDIO_GSXB_bootstrap,
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90 &MINTAUDIO_MCSN_bootstrap,
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91 &MINTAUDIO_STFA_bootstrap,
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92 &MINTAUDIO_XBIOS_bootstrap,
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93 &MINTAUDIO_DMA8_bootstrap,
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94 #endif
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95 #if SDL_AUDIO_DRIVER_DISK
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96 &DISKAUD_bootstrap,
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97 #endif
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98 #if SDL_AUDIO_DRIVER_DUMMY
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99 &DUMMYAUD_bootstrap,
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100 #endif
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101 #if SDL_AUDIO_DRIVER_DC
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102 &DCAUD_bootstrap,
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103 #endif
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104 #if SDL_AUDIO_DRIVER_MMEAUDIO
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105 &MMEAUDIO_bootstrap,
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106 #endif
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107 #if SDL_AUDIO_DRIVER_DART
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108 &DART_bootstrap,
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109 #endif
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110 NULL
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111 };
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112 SDL_AudioDevice *current_audio = NULL;
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113
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114 /* Various local functions */
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115 int SDL_AudioInit(const char *driver_name);
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116 void SDL_AudioQuit(void);
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117
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118 #if SDL_AUDIO_DRIVER_AHI
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119 static int audio_configured = 0;
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120 #endif
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121
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122 /* The general mixing thread function */
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123 int SDLCALL
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124 SDL_RunAudio(void *audiop)
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125 {
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126 SDL_AudioDevice *audio = (SDL_AudioDevice *) audiop;
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127 Uint8 *stream;
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128 int stream_len;
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129 void *udata;
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130 void (SDLCALL * fill) (void *userdata, Uint8 * stream, int len);
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131 int silence;
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132 #if SDL_AUDIO_DRIVER_AHI
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133 int started = 0;
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134
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135 /* AmigaOS NEEDS that the audio driver is opened in the thread that uses it! */
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136
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137 D(bug("Task audio started audio struct:<%lx>...\n", audiop));
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138
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139 D(bug("Before Openaudio..."));
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140 if (audio->OpenAudio(audio, &audio->spec) == -1) {
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141 D(bug("Open audio failed...\n"));
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142 return (-1);
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143 }
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144 D(bug("OpenAudio...OK\n"));
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145 #endif
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146
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147 /* Perform any thread setup */
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148 if (audio->ThreadInit) {
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149 audio->ThreadInit(audio);
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150 }
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151 audio->threadid = SDL_ThreadID();
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152
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153 /* Set up the mixing function */
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154 fill = audio->spec.callback;
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155 udata = audio->spec.userdata;
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156
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157 #if SDL_AUDIO_DRIVER_AHI
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158 audio_configured = 1;
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159
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160 D(bug("Audio configured... Checking for conversion\n"));
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161 SDL_mutexP(audio->mixer_lock);
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162 D(bug("Semaphore obtained...\n"));
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163 #endif
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164
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165 if (audio->convert.needed) {
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166 if (audio->convert.src_format == AUDIO_U8) {
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167 silence = 0x80;
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168 } else {
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169 silence = 0;
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170 }
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171 stream_len = audio->convert.len;
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172 } else {
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173 silence = audio->spec.silence;
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174 stream_len = audio->spec.size;
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175 }
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176
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177 #if SDL_AUDIO_DRIVER_AHI
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178 SDL_mutexV(audio->mixer_lock);
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179 D(bug("Entering audio loop...\n"));
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180 #endif
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181
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182 #ifdef __OS2__
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183 /* Increase the priority of this thread to make sure that
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184 the audio will be continuous all the time! */
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185 #ifdef USE_DOSSETPRIORITY
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186 if (SDL_getenv("SDL_USE_TIMECRITICAL_AUDIO")) {
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187 #ifdef DEBUG_BUILD
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188 printf
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189 ("[SDL_RunAudio] : Setting priority to TimeCritical+0! (TID%d)\n",
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190 SDL_ThreadID());
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191 #endif
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192 DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0);
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193 } else {
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194 #ifdef DEBUG_BUILD
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195 printf
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196 ("[SDL_RunAudio] : Setting priority to ForegroundServer+0! (TID%d)\n",
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197 SDL_ThreadID());
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198 #endif
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199 DosSetPriority(PRTYS_THREAD, PRTYC_FOREGROUNDSERVER, 0, 0);
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200 }
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201 #endif
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202 #endif
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203
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204 /* Loop, filling the audio buffers */
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205 while (audio->enabled) {
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206
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207 /* Fill the current buffer with sound */
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208 if (audio->convert.needed) {
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209 if (audio->convert.buf) {
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210 stream = audio->convert.buf;
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211 } else {
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212 continue;
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213 }
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214 } else {
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215 stream = audio->GetAudioBuf(audio);
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216 if (stream == NULL) {
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217 stream = audio->fake_stream;
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218 }
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219 }
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220 SDL_memset(stream, silence, stream_len);
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221
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222 if (!audio->paused) {
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223 SDL_mutexP(audio->mixer_lock);
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224 (*fill) (udata, stream, stream_len);
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225 SDL_mutexV(audio->mixer_lock);
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226 }
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227
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228 /* Convert the audio if necessary */
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229 if (audio->convert.needed) {
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230 SDL_ConvertAudio(&audio->convert);
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231 stream = audio->GetAudioBuf(audio);
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232 if (stream == NULL) {
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233 stream = audio->fake_stream;
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234 }
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235 SDL_memcpy(stream, audio->convert.buf, audio->convert.len_cvt);
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236 }
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237
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238 /* Ready current buffer for play and change current buffer */
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239 if (stream != audio->fake_stream) {
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240 audio->PlayAudio(audio);
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241 }
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242
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243 /* Wait for an audio buffer to become available */
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244 if (stream == audio->fake_stream) {
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245 SDL_Delay((audio->spec.samples * 1000) / audio->spec.freq);
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246 } else {
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247 audio->WaitAudio(audio);
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248 }
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249 }
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250
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251 /* Wait for the audio to drain.. */
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252 if (audio->WaitDone) {
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253 audio->WaitDone(audio);
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254 }
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255 #if SDL_AUDIO_DRIVER_AHI
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256 D(bug("WaitAudio...Done\n"));
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257
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258 audio->CloseAudio(audio);
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259
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260 D(bug("CloseAudio..Done, subtask exiting...\n"));
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261 audio_configured = 0;
21
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262 #endif
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263 #ifdef __OS2__
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264 #ifdef DEBUG_BUILD
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265 printf("[SDL_RunAudio] : Task exiting. (TID%d)\n", SDL_ThreadID());
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266 #endif
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267 #endif
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268 return (0);
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269 }
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270
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271 static void
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272 SDL_LockAudio_Default(SDL_AudioDevice * audio)
322
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273 {
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274 if (audio->thread && (SDL_ThreadID() == audio->threadid)) {
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275 return;
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276 }
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277 SDL_mutexP(audio->mixer_lock);
322
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278 }
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279
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280 static void
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281 SDL_UnlockAudio_Default(SDL_AudioDevice * audio)
322
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282 {
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283 if (audio->thread && (SDL_ThreadID() == audio->threadid)) {
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284 return;
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285 }
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286 SDL_mutexV(audio->mixer_lock);
322
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287 }
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288
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289 static Uint16
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290 SDL_ParseAudioFormat(const char *string)
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291 {
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292 Uint16 format = 0;
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293
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294 switch (*string) {
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295 case 'U':
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296 ++string;
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297 format |= 0x0000;
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298 break;
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299 case 'S':
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300 ++string;
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301 format |= 0x8000;
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302 break;
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303 default:
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304 return 0;
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305 }
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306 switch (SDL_atoi(string)) {
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307 case 8:
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308 string += 1;
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309 format |= 8;
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310 break;
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311 case 16:
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312 string += 2;
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313 format |= 16;
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314 if (SDL_strcmp(string, "LSB") == 0
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315 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
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316 || SDL_strcmp(string, "SYS") == 0
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317 #endif
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318 ) {
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319 format |= 0x0000;
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320 }
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321 if (SDL_strcmp(string, "MSB") == 0
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322 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
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323 || SDL_strcmp(string, "SYS") == 0
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324 #endif
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325 ) {
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326 format |= 0x1000;
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327 }
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328 break;
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329 default:
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330 return 0;
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331 }
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332 return format;
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333 }
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334
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335 int
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336 SDL_GetNumAudioDrivers(void)
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337 {
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338 return (SDL_arraysize(bootstrap) - 1);
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339 }
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340
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341 const char *
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342 SDL_GetAudioDriver(int index)
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343 {
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344 if (index >= 0 && index < SDL_GetNumAudioDrivers()) {
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345 return (bootstrap[index]->name);
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346 }
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347 return (NULL);
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348 }
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349
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350 int
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351 SDL_AudioInit(const char *driver_name)
0
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352 {
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353 SDL_AudioDevice *audio;
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354 int i = 0, idx;
0
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355
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356 /* Check to make sure we don't overwrite 'current_audio' */
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357 if (current_audio != NULL) {
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358 SDL_AudioQuit();
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359 }
0
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diff changeset
360
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361 /* Select the proper audio driver */
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diff changeset
362 audio = NULL;
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363 idx = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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diff changeset
364 #if SDL_AUDIO_DRIVER_ESD
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365 if ((driver_name == NULL) && (SDL_getenv("ESPEAKER") != NULL)) {
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diff changeset
366 /* Ahem, we know that if ESPEAKER is set, user probably wants
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diff changeset
367 to use ESD, but don't start it if it's not already running.
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diff changeset
368 This probably isn't the place to do this, but... Shh! :)
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diff changeset
369 */
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370 for (i = 0; bootstrap[i]; ++i) {
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371 if (SDL_strcmp(bootstrap[i]->name, "esd") == 0) {
1341
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372 #ifdef HAVE_PUTENV
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373 const char *esd_no_spawn;
0
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374
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375 /* Don't start ESD if it's not running */
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376 esd_no_spawn = getenv("ESD_NO_SPAWN");
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377 if (esd_no_spawn == NULL) {
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378 putenv("ESD_NO_SPAWN=1");
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379 }
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diff changeset
380 #endif
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381 if (bootstrap[i]->available()) {
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382 audio = bootstrap[i]->create(0);
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diff changeset
383 break;
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diff changeset
384 }
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385 #ifdef HAVE_UNSETENV
1662
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diff changeset
386 if (esd_no_spawn == NULL) {
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diff changeset
387 unsetenv("ESD_NO_SPAWN");
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diff changeset
388 }
0
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diff changeset
389 #endif
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diff changeset
390 }
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parents: 1660
diff changeset
391 }
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parents: 1660
diff changeset
392 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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parents: 1358
diff changeset
393 #endif /* SDL_AUDIO_DRIVER_ESD */
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diff changeset
394 if (audio == NULL) {
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diff changeset
395 if (driver_name != NULL) {
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diff changeset
396 #if 0 /* This will be replaced with a better driver selection API */
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diff changeset
397 if (SDL_strrchr(driver_name, ':') != NULL) {
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diff changeset
398 idx = atoi(SDL_strrchr(driver_name, ':') + 1);
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diff changeset
399 }
0
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diff changeset
400 #endif
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diff changeset
401 for (i = 0; bootstrap[i]; ++i) {
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diff changeset
402 if (SDL_strncmp(bootstrap[i]->name, driver_name,
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diff changeset
403 SDL_strlen(bootstrap[i]->name)) == 0) {
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parents: 1662
diff changeset
404 if (bootstrap[i]->available()) {
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diff changeset
405 audio = bootstrap[i]->create(idx);
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diff changeset
406 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
407 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
408 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
409 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
410 } else {
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diff changeset
411 for (i = 0; bootstrap[i]; ++i) {
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diff changeset
412 if (bootstrap[i]->available()) {
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diff changeset
413 audio = bootstrap[i]->create(idx);
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diff changeset
414 if (audio != NULL) {
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diff changeset
415 break;
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diff changeset
416 }
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diff changeset
417 }
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diff changeset
418 }
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diff changeset
419 }
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diff changeset
420 if (audio == NULL) {
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diff changeset
421 if (driver_name) {
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diff changeset
422 SDL_SetError("%s not available", driver_name);
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diff changeset
423 } else {
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diff changeset
424 SDL_SetError("No available audio device");
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425 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
426 #if 0 /* Don't fail SDL_Init() if audio isn't available.
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diff changeset
427 SDL_OpenAudio() will handle it at that point. *sigh*
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diff changeset
428 */
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diff changeset
429 return (-1);
0
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diff changeset
430 #endif
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diff changeset
431 }
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diff changeset
432 }
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diff changeset
433 current_audio = audio;
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diff changeset
434 if (current_audio) {
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diff changeset
435 current_audio->name = bootstrap[i]->name;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
436 if (!current_audio->LockAudio && !current_audio->UnlockAudio) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
437 current_audio->LockAudio = SDL_LockAudio_Default;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
438 current_audio->UnlockAudio = SDL_UnlockAudio_Default;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
439 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
440 }
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diff changeset
441 return (0);
0
74212992fb08 Initial revision
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parents:
diff changeset
442 }
74212992fb08 Initial revision
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parents:
diff changeset
443
1662
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diff changeset
444 /*
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
445 * Get the current audio driver name
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diff changeset
446 */
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diff changeset
447 const char *
1668
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diff changeset
448 SDL_GetCurrentAudioDriver()
0
74212992fb08 Initial revision
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diff changeset
449 {
1662
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diff changeset
450 if (current_audio) {
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diff changeset
451 return current_audio->name;
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diff changeset
452 }
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diff changeset
453 return (NULL);
0
74212992fb08 Initial revision
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diff changeset
454 }
74212992fb08 Initial revision
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parents:
diff changeset
455
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diff changeset
456 int
1668
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diff changeset
457 SDL_OpenAudio(SDL_AudioSpec * desired, SDL_AudioSpec * obtained)
0
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diff changeset
458 {
1662
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diff changeset
459 SDL_AudioDevice *audio;
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diff changeset
460 const char *env;
0
74212992fb08 Initial revision
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parents:
diff changeset
461
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
462 /* Start up the audio driver, if necessary */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
463 if (!current_audio) {
1668
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diff changeset
464 if ((SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) ||
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
465 (current_audio == NULL)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
466 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
467 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
468 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
469 audio = current_audio;
0
74212992fb08 Initial revision
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diff changeset
470
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diff changeset
471 if (audio->opened) {
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diff changeset
472 SDL_SetError("Audio device is already opened");
1662
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diff changeset
473 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
474 }
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
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parents: 252
diff changeset
475
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
476 /* Verify some parameters */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
477 if (desired->freq == 0) {
1668
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diff changeset
478 env = SDL_getenv("SDL_AUDIO_FREQUENCY");
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
479 if (env) {
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diff changeset
480 desired->freq = SDL_atoi(env);
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diff changeset
481 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
482 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
483 if (desired->freq == 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
484 /* Pick some default audio frequency */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
485 desired->freq = 22050;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
486 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
487 if (desired->format == 0) {
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diff changeset
488 env = SDL_getenv("SDL_AUDIO_FORMAT");
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diff changeset
489 if (env) {
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diff changeset
490 desired->format = SDL_ParseAudioFormat(env);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
491 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
492 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
493 if (desired->format == 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
494 /* Pick some default audio format */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
495 desired->format = AUDIO_S16;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
496 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
497 if (desired->channels == 0) {
1668
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diff changeset
498 env = SDL_getenv("SDL_AUDIO_CHANNELS");
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
499 if (env) {
1668
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diff changeset
500 desired->channels = SDL_atoi(env);
1662
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diff changeset
501 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
502 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
503 if (desired->channels == 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
504 /* Pick a default number of channels */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
505 desired->channels = 2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
506 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
507 switch (desired->channels) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
508 case 1: /* Mono */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
509 case 2: /* Stereo */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
510 case 4: /* surround */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
511 case 6: /* surround with center and lfe */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
512 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
513 default:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
514 SDL_SetError("1 (mono) and 2 (stereo) channels supported");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
515 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
516 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
517 if (desired->samples == 0) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
518 env = SDL_getenv("SDL_AUDIO_SAMPLES");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
519 if (env) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
520 desired->samples = SDL_atoi(env);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
521 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
522 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
523 if (desired->samples == 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
524 /* Pick a default of ~46 ms at desired frequency */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
525 int samples = (desired->freq / 1000) * 46;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
526 int power2 = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
527 while (power2 < samples) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
528 power2 *= 2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
529 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
530 desired->samples = power2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
531 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
532 if (desired->callback == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
533 SDL_SetError("SDL_OpenAudio() passed a NULL callback");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
534 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
535 }
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
536 #if defined(__MACOS__) || (defined(__RISCOS__) && SDL_THREADS_DISABLED)
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
537 /* FIXME: Need to implement PPC interrupt asm for SDL_LockAudio() */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 #else
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
539 #if defined(__MINT__) && SDL_THREADS_DISABLED
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
540 /* Uses interrupt driven audio, without thread */
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
541 #else
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
542 /* Create a semaphore for locking the sound buffers */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
543 audio->mixer_lock = SDL_CreateMutex();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
544 if (audio->mixer_lock == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
545 SDL_SetError("Couldn't create mixer lock");
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
546 SDL_CloseAudio();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
547 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
548 }
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
549 #endif /* __MINT__ */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
550 #endif /* __MACOS__ */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
552 /* Calculate the silence and size of the audio specification */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
553 SDL_CalculateAudioSpec(desired);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
555 /* Open the audio subsystem */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
556 SDL_memcpy(&audio->spec, desired, sizeof(audio->spec));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
557 audio->convert.needed = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
558 audio->enabled = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
559 audio->paused = 1;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
560
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
561 #if !SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
562
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
563 /* AmigaOS opens audio inside the main loop */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
564 audio->opened = audio->OpenAudio(audio, &audio->spec) + 1;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
565
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
566 if (!audio->opened) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
567 SDL_CloseAudio();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
568 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
569 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
570 #else
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
571 D(bug("Locking semaphore..."));
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
572 SDL_mutexP(audio->mixer_lock);
1408
ceb5c2fec4f1 Fixed some preprocessor mangling
Sam Lantinga <slouken@libsdl.org>
parents: 1406
diff changeset
573
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
574
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
575 audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
576 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
577
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
578 if (audio->thread == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
579 SDL_mutexV(audio->mixer_lock);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
580 SDL_CloseAudio();
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
581 SDL_SetError("Couldn't create audio thread");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
582 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
583 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
584
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
585 while (!audio_configured)
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
586 SDL_Delay(100);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
587 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
589 /* If the audio driver changes the buffer size, accept it */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
590 if (audio->spec.samples != desired->samples) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
591 desired->samples = audio->spec.samples;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
592 SDL_CalculateAudioSpec(desired);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
593 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
595 /* Allocate a fake audio memory buffer */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
596 audio->fake_stream = SDL_AllocAudioMem(audio->spec.size);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
597 if (audio->fake_stream == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
598 SDL_CloseAudio();
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
599 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
600 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
601 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
603 /* See if we need to do any conversion */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
604 if (obtained != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
605 SDL_memcpy(obtained, &audio->spec, sizeof(audio->spec));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
606 } else if (desired->freq != audio->spec.freq ||
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
607 desired->format != audio->spec.format ||
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
608 desired->channels != audio->spec.channels) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
609 /* Build an audio conversion block */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
610 if (SDL_BuildAudioCVT(&audio->convert,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
611 desired->format, desired->channels,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
612 desired->freq,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
613 audio->spec.format, audio->spec.channels,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
614 audio->spec.freq) < 0) {
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
615 SDL_CloseAudio();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
616 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
617 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
618 if (audio->convert.needed) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
619 audio->convert.len = desired->size;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
620 audio->convert.buf =
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
621 (Uint8 *) SDL_AllocAudioMem(audio->convert.len *
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
622 audio->convert.len_mult);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
623 if (audio->convert.buf == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
624 SDL_CloseAudio();
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
625 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
626 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
627 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
628 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
629 }
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
630 #if !SDL_AUDIO_DRIVER_AHI
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
631 /* Start the audio thread if necessary */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
632 switch (audio->opened) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
633 case 1:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
634 /* Start the audio thread */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
635 #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
636 #undef SDL_CreateThread
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
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diff changeset
637 audio->thread = SDL_CreateThread(SDL_RunAudio, audio, 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
638 #else
1668
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diff changeset
639 audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
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
640 #endif
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
641 if (audio->thread == NULL) {
1668
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diff changeset
642 SDL_CloseAudio();
4da1ee79c9af more tweaking indent options
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diff changeset
643 SDL_SetError("Couldn't create audio thread");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
644 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
645 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
646 break;
0
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parents:
diff changeset
647
1662
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Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
648 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
649 /* The audio is now playing */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
650 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
651 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
652 #else
1668
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
653 SDL_mutexV(audio->mixer_lock);
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
654 D(bug("SDL_OpenAudio USCITA...\n"));
21
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Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
655
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
656 #endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
657
1662
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Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
658 return (0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
659 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
660
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
661 SDL_audiostatus
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diff changeset
662 SDL_GetAudioStatus(void)
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Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
663 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
664 SDL_AudioDevice *audio = current_audio;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
665 SDL_audiostatus status;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
666
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
667 status = SDL_AUDIO_STOPPED;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
668 if (audio && audio->enabled) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
669 if (audio->paused) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
670 status = SDL_AUDIO_PAUSED;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
671 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
672 status = SDL_AUDIO_PLAYING;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
673 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
674 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
675 return (status);
0
74212992fb08 Initial revision
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parents:
diff changeset
676 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
678 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
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diff changeset
679 SDL_PauseAudio(int pause_on)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
680 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
681 SDL_AudioDevice *audio = current_audio;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
682
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
683 if (audio) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
684 audio->paused = pause_on;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
685 }
0
74212992fb08 Initial revision
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parents:
diff changeset
686 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
687
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
688 void
1668
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
689 SDL_LockAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
690 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
691 SDL_AudioDevice *audio = current_audio;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
692
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
693 /* Obtain a lock on the mixing buffers */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
694 if (audio && audio->LockAudio) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
695 audio->LockAudio(audio);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
696 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
697 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
698
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
699 void
1668
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parents: 1662
diff changeset
700 SDL_UnlockAudio(void)
0
74212992fb08 Initial revision
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parents:
diff changeset
701 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
702 SDL_AudioDevice *audio = current_audio;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
703
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
704 /* Release lock on the mixing buffers */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
705 if (audio && audio->UnlockAudio) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
706 audio->UnlockAudio(audio);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
707 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
708 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
709
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
710 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
711 SDL_CloseAudio(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
712 {
1668
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
713 SDL_QuitSubSystem(SDL_INIT_AUDIO);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
714 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
715
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
716 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
717 SDL_AudioQuit(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
718 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
719 SDL_AudioDevice *audio = current_audio;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
720
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
721 if (audio) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
722 audio->enabled = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
723 if (audio->thread != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
724 SDL_WaitThread(audio->thread, NULL);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
725 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
726 if (audio->mixer_lock != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
727 SDL_DestroyMutex(audio->mixer_lock);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
728 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
729 if (audio->fake_stream != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
730 SDL_FreeAudioMem(audio->fake_stream);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
731 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
732 if (audio->convert.needed) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
733 SDL_FreeAudioMem(audio->convert.buf);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
734
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
735 }
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
736 #if !SDL_AUDIO_DRIVER_AHI
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
737 if (audio->opened) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
738 audio->CloseAudio(audio);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
739 audio->opened = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
740 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
741 #endif
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
742 /* Free the driver data */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
743 audio->free(audio);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
744 current_audio = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
745 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
746 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
747
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
748 #define NUM_FORMATS 6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
749 static int format_idx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 static int format_idx_sub;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
751 static Uint16 format_list[NUM_FORMATS][NUM_FORMATS] = {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
752 {AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
753 AUDIO_U16MSB},
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
754 {AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
755 AUDIO_U16MSB},
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
756 {AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
757 AUDIO_S8},
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
758 {AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
759 AUDIO_S8},
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
760 {AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U8,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
761 AUDIO_S8},
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
762 {AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U8,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
763 AUDIO_S8},
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
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765
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
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766 Uint16
1668
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767 SDL_FirstAudioFormat(Uint16 format)
0
74212992fb08 Initial revision
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parents:
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768 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
769 for (format_idx = 0; format_idx < NUM_FORMATS; ++format_idx) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
770 if (format_list[format_idx][0] == format) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1660
diff changeset
771 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
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772 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
773 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
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774 format_idx_sub = 0;
1668
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775 return (SDL_NextAudioFormat());
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
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776 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
777
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
778 Uint16
1668
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
779 SDL_NextAudioFormat(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
780 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
781 if ((format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
782 return (0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
783 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
784 return (format_list[format_idx][format_idx_sub++]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
785 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
786
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
787 void
1668
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parents: 1662
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788 SDL_CalculateAudioSpec(SDL_AudioSpec * spec)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
789 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
790 switch (spec->format) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
791 case AUDIO_U8:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
792 spec->silence = 0x80;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
793 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
794 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
795 spec->silence = 0x00;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
796 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
797 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
798 spec->size = (spec->format & 0xFF) / 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
799 spec->size *= spec->channels;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
800 spec->size *= spec->samples;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
801 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
802
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1660
diff changeset
803 /* vi: set ts=4 sw=4 expandtab: */