annotate src/audio/SDL_audio.c @ 1406:39ca9a4b22f3

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author Sam Lantinga <slouken@libsdl.org>
date Tue, 21 Feb 2006 09:14:58 +0000
parents d910939febfa
children ceb5c2fec4f1
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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_OPENBSD
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40 &OPENBSD_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_DC
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99 &DCAUD_bootstrap,
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100 #endif
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101 #if SDL_AUDIO_DRIVER_MMEAUDIO
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102 &MMEAUDIO_bootstrap,
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103 #endif
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104 #if SDL_AUDIO_DRIVER_DART
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105 &DART_bootstrap,
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106 #endif
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107 NULL
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108 };
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109 SDL_AudioDevice *current_audio = NULL;
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110
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111 /* Various local functions */
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112 int SDL_AudioInit(const char *driver_name);
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113 void SDL_AudioQuit(void);
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114
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115 #if SDL_AUDIO_DRIVER_AHI
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116 static int audio_configured = 0;
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117 #endif
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118
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119 /* The general mixing thread function */
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120 int SDL_RunAudio(void *audiop)
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121 {
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122 SDL_AudioDevice *audio = (SDL_AudioDevice *)audiop;
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123 Uint8 *stream;
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124 int stream_len;
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125 void *udata;
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126 void (*fill)(void *userdata,Uint8 *stream, int len);
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127 int silence;
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128 #if SDL_AUDIO_DRIVER_AHI
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129 int started = 0;
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130
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131 /* AmigaOS NEEDS that the audio driver is opened in the thread that uses it! */
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132
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133 D(bug("Task audio started audio struct:<%lx>...\n",audiop));
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134
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135 D(bug("Before Openaudio..."));
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136 if(audio->OpenAudio(audio, &audio->spec)==-1)
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137 {
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138 D(bug("Open audio failed...\n"));
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139 return(-1);
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140 }
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141 D(bug("OpenAudio...OK\n"));
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142 #endif
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143
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144 /* Perform any thread setup */
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145 if ( audio->ThreadInit ) {
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146 audio->ThreadInit(audio);
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147 }
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148 audio->threadid = SDL_ThreadID();
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149
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150 /* Set up the mixing function */
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151 fill = audio->spec.callback;
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152 udata = audio->spec.userdata;
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153
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154 #if SDL_AUDIO_DRIVER_AHI
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155 audio_configured = 1;
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156
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157 D(bug("Audio configured... Checking for conversion\n"));
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158 SDL_mutexP(audio->mixer_lock);
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159 D(bug("Semaphore obtained...\n"));
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160 #endif
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161
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162 if ( audio->convert.needed ) {
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163 if ( audio->convert.src_format == AUDIO_U8 ) {
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164 silence = 0x80;
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165 } else {
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166 silence = 0;
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167 }
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168 stream_len = audio->convert.len;
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169 } else {
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170 silence = audio->spec.silence;
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171 stream_len = audio->spec.size;
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172 }
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173 stream = audio->fake_stream;
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174
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175 #if SDL_AUDIO_DRIVER_AHI
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176 SDL_mutexV(audio->mixer_lock);
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177 D(bug("Entering audio loop...\n"));
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178 #endif
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179
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180 #ifdef __OS2__
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181 // Increase the priority of this thread to make sure that
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182 // the audio will be continuous all the time!
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183 #ifdef USE_DOSSETPRIORITY
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184 #ifdef DEBUG_BUILD
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185 printf("[SDL_RunAudio] : Setting priority to ForegroundServer+0! (TID%d)\n", SDL_ThreadID());
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186 #endif
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187 DosSetPriority(PRTYS_THREAD, PRTYC_FOREGROUNDSERVER, 0, 0);
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188 #endif
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189 #endif
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190
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191 /* Loop, filling the audio buffers */
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192 while ( audio->enabled ) {
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193
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194 /* Wait for new current buffer to finish playing */
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195 if ( stream == audio->fake_stream ) {
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196 SDL_Delay((audio->spec.samples*1000)/audio->spec.freq);
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197 } else {
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198 #if SDL_AUDIO_DRIVER_AHI
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199 if ( started > 1 )
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200 #endif
0
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201 audio->WaitAudio(audio);
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202 }
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203
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204 /* Fill the current buffer with sound */
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205 if ( audio->convert.needed ) {
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206 if ( audio->convert.buf ) {
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207 stream = audio->convert.buf;
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208 } else {
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209 continue;
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210 }
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211 } else {
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212 stream = audio->GetAudioBuf(audio);
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213 if ( stream == NULL ) {
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214 stream = audio->fake_stream;
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215 }
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216 }
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217 SDL_memset(stream, silence, stream_len);
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218
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219 if ( ! audio->paused ) {
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220 SDL_mutexP(audio->mixer_lock);
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221 (*fill)(udata, stream, stream_len);
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222 SDL_mutexV(audio->mixer_lock);
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223 }
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224
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225 /* Convert the audio if necessary */
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226 if ( audio->convert.needed ) {
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227 SDL_ConvertAudio(&audio->convert);
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228 stream = audio->GetAudioBuf(audio);
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229 if ( stream == NULL ) {
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230 stream = audio->fake_stream;
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231 }
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232 SDL_memcpy(stream, audio->convert.buf,
0
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233 audio->convert.len_cvt);
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234 }
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235
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236 /* Ready current buffer for play and change current buffer */
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237 if ( stream != audio->fake_stream ) {
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238 audio->PlayAudio(audio);
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239 #if SDL_AUDIO_DRIVER_AHI
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240 /* AmigaOS don't have to wait the first time audio is played! */
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diff changeset
241 started++;
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242 #endif
0
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243 }
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244 }
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245 /* Wait for the audio to drain.. */
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246 if ( audio->WaitDone ) {
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247 audio->WaitDone(audio);
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248 }
21
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249
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250 #if SDL_AUDIO_DRIVER_AHI
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251 D(bug("WaitAudio...Done\n"));
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252
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253 audio->CloseAudio(audio);
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254
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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255 D(bug("CloseAudio..Done, subtask exiting...\n"));
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256 audio_configured = 0;
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diff changeset
257 #endif
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258 #ifdef __OS2__
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259 #ifdef DEBUG_BUILD
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260 printf("[SDL_RunAudio] : Task exiting. (TID%d)\n", SDL_ThreadID());
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261 #endif
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262 #endif
0
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263 return(0);
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264 }
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265
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
266 static void SDL_LockAudio_Default(SDL_AudioDevice *audio)
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diff changeset
267 {
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268 if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) {
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diff changeset
269 return;
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diff changeset
270 }
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271 SDL_mutexP(audio->mixer_lock);
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272 }
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273
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diff changeset
274 static void SDL_UnlockAudio_Default(SDL_AudioDevice *audio)
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diff changeset
275 {
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diff changeset
276 if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) {
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diff changeset
277 return;
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diff changeset
278 }
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diff changeset
279 SDL_mutexV(audio->mixer_lock);
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diff changeset
280 }
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diff changeset
281
0
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282 int SDL_AudioInit(const char *driver_name)
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283 {
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284 SDL_AudioDevice *audio;
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285 int i = 0, idx;
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286
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287 /* Check to make sure we don't overwrite 'current_audio' */
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288 if ( current_audio != NULL ) {
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289 SDL_AudioQuit();
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290 }
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diff changeset
291
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292 /* Select the proper audio driver */
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293 audio = NULL;
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294 idx = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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diff changeset
295 #if SDL_AUDIO_DRIVER_ESD
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diff changeset
296 if ( (driver_name == NULL) && (SDL_getenv("ESPEAKER") != NULL) ) {
0
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297 /* Ahem, we know that if ESPEAKER is set, user probably wants
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298 to use ESD, but don't start it if it's not already running.
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299 This probably isn't the place to do this, but... Shh! :)
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300 */
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301 for ( i=0; bootstrap[i]; ++i ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
302 if ( SDL_strcmp(bootstrap[i]->name, "esd") == 0 ) {
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
303 #ifdef HAVE_PUTENV
0
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parents:
diff changeset
304 const char *esd_no_spawn;
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parents:
diff changeset
305
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parents:
diff changeset
306 /* Don't start ESD if it's not running */
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
307 esd_no_spawn = getenv("ESD_NO_SPAWN");
0
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parents:
diff changeset
308 if ( esd_no_spawn == NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
309 putenv("ESD_NO_SPAWN=1");
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parents:
diff changeset
310 }
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
311 #endif
0
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parents:
diff changeset
312 if ( bootstrap[i]->available() ) {
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parents:
diff changeset
313 audio = bootstrap[i]->create(0);
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parents:
diff changeset
314 break;
74212992fb08 Initial revision
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parents:
diff changeset
315 }
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
316 #ifdef HAVE_UNSETENV
0
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parents:
diff changeset
317 if ( esd_no_spawn == NULL ) {
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parents:
diff changeset
318 unsetenv("ESD_NO_SPAWN");
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 }
74212992fb08 Initial revision
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parents:
diff changeset
320 #endif
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parents:
diff changeset
321 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
324 #endif /* SDL_AUDIO_DRIVER_ESD */
0
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parents:
diff changeset
325 if ( audio == NULL ) {
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parents:
diff changeset
326 if ( driver_name != NULL ) {
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parents:
diff changeset
327 #if 0 /* This will be replaced with a better driver selection API */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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parents: 1330
diff changeset
328 if ( SDL_strrchr(driver_name, ':') != NULL ) {
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
329 idx = atoi(SDL_strrchr(driver_name, ':')+1);
0
74212992fb08 Initial revision
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parents:
diff changeset
330 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 #endif
74212992fb08 Initial revision
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parents:
diff changeset
332 for ( i=0; bootstrap[i]; ++i ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
333 if (SDL_strncmp(bootstrap[i]->name, driver_name,
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
334 SDL_strlen(bootstrap[i]->name)) == 0) {
0
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parents:
diff changeset
335 if ( bootstrap[i]->available() ) {
74212992fb08 Initial revision
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parents:
diff changeset
336 audio=bootstrap[i]->create(idx);
74212992fb08 Initial revision
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parents:
diff changeset
337 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 } else {
74212992fb08 Initial revision
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parents:
diff changeset
342 for ( i=0; bootstrap[i]; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 if ( bootstrap[i]->available() ) {
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parents:
diff changeset
344 audio = bootstrap[i]->create(idx);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 if ( audio != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 if ( audio == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 SDL_SetError("No available audio device");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 #if 0 /* Don't fail SDL_Init() if audio isn't available.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 SDL_OpenAudio() will handle it at that point. *sigh*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 current_audio = audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 if ( current_audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 current_audio->name = bootstrap[i]->name;
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
363 if ( !current_audio->LockAudio && !current_audio->UnlockAudio ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
364 current_audio->LockAudio = SDL_LockAudio_Default;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
365 current_audio->UnlockAudio = SDL_UnlockAudio_Default;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
366 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 char *SDL_AudioDriverName(char *namebuf, int maxlen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 if ( current_audio != NULL ) {
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
374 SDL_strlcpy(namebuf, current_audio->name, maxlen);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 return(namebuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 int SDL_OpenAudio(SDL_AudioSpec *desired, SDL_AudioSpec *obtained)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 SDL_AudioDevice *audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 /* Start up the audio driver, if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 if ( ! current_audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 if ( (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 (current_audio == NULL) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
393 if (audio->opened) {
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
394 SDL_SetError("Audio device is already opened");
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
395 return(-1);
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
396 }
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
397
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 /* Verify some parameters */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 if ( desired->callback == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 SDL_SetError("SDL_OpenAudio() passed a NULL callback");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 switch ( desired->channels ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 case 1: /* Mono */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 case 2: /* Stereo */
942
41a59de7f2ed Here are patches for SDL12 and SDL_mixer for 4 or 6 channel
Sam Lantinga <slouken@libsdl.org>
parents: 936
diff changeset
406 case 4: /* surround */
41a59de7f2ed Here are patches for SDL12 and SDL_mixer for 4 or 6 channel
Sam Lantinga <slouken@libsdl.org>
parents: 936
diff changeset
407 case 6: /* surround with center and lfe */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 SDL_SetError("1 (mono) and 2 (stereo) channels supported");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
414 #if defined(__MACOS__) || (defined(__RISCOS__) && SDL_THREADS_DISABLED)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 /* FIXME: Need to implement PPC interrupt asm for SDL_LockAudio() */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 #else
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
417 #if defined(__MINT__) && SDL_THREADS_DISABLED
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
418 /* Uses interrupt driven audio, without thread */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
419 #else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 /* Create a semaphore for locking the sound buffers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 audio->mixer_lock = SDL_CreateMutex();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 if ( audio->mixer_lock == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 SDL_SetError("Couldn't create mixer lock");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 }
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
427 #endif /* __MINT__ */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
428 #endif /* __MACOS__ */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 /* Calculate the silence and size of the audio specification */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 SDL_CalculateAudioSpec(desired);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 /* Open the audio subsystem */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
434 SDL_memcpy(&audio->spec, desired, sizeof(audio->spec));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 audio->convert.needed = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 audio->enabled = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 audio->paused = 1;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
438
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
439 #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
440
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
441 /* AmigaOS opens audio inside the main loop */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 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
443
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 if ( ! audio->opened ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
448 #else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
449 D(bug("Locking semaphore..."));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
450 SDL_mutexP(audio->mixer_lock);
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
451 #endif
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
452
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
453 #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
454 #undef SDL_CreateThread
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
455 audio->thread = SDL_CreateThread(SDL_RunAudio, audio, NULL, NULL);
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
456 #else
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
457 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
458 #endif
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
459 D(bug("Created thread...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
460
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
461 if ( audio->thread == NULL ) {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
462 SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
463 SDL_CloseAudio();
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
464 SDL_SetError("Couldn't create audio thread");
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
465 return(-1);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
466 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
467
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
468 #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
469 while(!audio_configured)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
470 SDL_Delay(100);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
471 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 /* If the audio driver changes the buffer size, accept it */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 if ( audio->spec.samples != desired->samples ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 desired->samples = audio->spec.samples;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 SDL_CalculateAudioSpec(desired);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 /* Allocate a fake audio memory buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 audio->fake_stream = SDL_AllocAudioMem(audio->spec.size);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 if ( audio->fake_stream == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 /* See if we need to do any conversion */
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
488 if ( obtained != NULL ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
489 SDL_memcpy(obtained, &audio->spec, sizeof(audio->spec));
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
490 } else if ( desired->freq != audio->spec.freq ||
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
491 desired->format != audio->spec.format ||
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
492 desired->channels != audio->spec.channels ) {
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
493 /* Build an audio conversion block */
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
494 if ( SDL_BuildAudioCVT(&audio->convert,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
495 desired->format, desired->channels,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
496 desired->freq,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
497 audio->spec.format, audio->spec.channels,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
498 audio->spec.freq) < 0 ) {
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
499 SDL_CloseAudio();
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
500 return(-1);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 }
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
502 if ( audio->convert.needed ) {
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
503 audio->convert.len = desired->size;
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
504 audio->convert.buf =(Uint8 *)SDL_AllocAudioMem(
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
505 audio->convert.len*audio->convert.len_mult);
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
506 if ( audio->convert.buf == NULL ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 SDL_CloseAudio();
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
508 SDL_OutOfMemory();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
514 #if !SDL_AUDIO_DRIVER_AHI
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 /* Start the audio thread if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 switch (audio->opened) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 /* Start the audio thread */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
519 #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
520 #undef SDL_CreateThread
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
521 audio->thread = SDL_CreateThread(SDL_RunAudio, audio, NULL, NULL);
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
522 #else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 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
524 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 if ( audio->thread == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 SDL_SetError("Couldn't create audio thread");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 /* The audio is now playing */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
536 #else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
537 SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
538 D(bug("SDL_OpenAudio USCITA...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
539
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
540 #endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
541
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 SDL_audiostatus SDL_GetAudioStatus(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 SDL_audiostatus status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 status = SDL_AUDIO_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 if ( audio && audio->enabled ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 if ( audio->paused ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 status = SDL_AUDIO_PAUSED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 status = SDL_AUDIO_PLAYING;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 return(status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 void SDL_PauseAudio (int pause_on)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 if ( audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 audio->paused = pause_on;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 void SDL_LockAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 /* Obtain a lock on the mixing buffers */
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
575 if ( audio && audio->LockAudio ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
576 audio->LockAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 void SDL_UnlockAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 /* Release lock on the mixing buffers */
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
585 if ( audio && audio->UnlockAudio ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
586 audio->UnlockAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 void SDL_CloseAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 SDL_QuitSubSystem(SDL_INIT_AUDIO);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 void SDL_AudioQuit(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 if ( audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 audio->enabled = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 if ( audio->thread != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 SDL_WaitThread(audio->thread, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 if ( audio->mixer_lock != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 SDL_DestroyMutex(audio->mixer_lock);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 if ( audio->fake_stream != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 SDL_FreeAudioMem(audio->fake_stream);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 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
612
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 }
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
614 #if !SDL_AUDIO_DRIVER_AHI
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 if ( audio->opened ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 audio->CloseAudio(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 audio->opened = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
619 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 /* Free the driver data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 audio->free(audio);
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622 current_audio = NULL;
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parents:
diff changeset
623 }
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parents:
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624 }
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parents:
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625
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parents:
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626 #define NUM_FORMATS 6
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parents:
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627 static int format_idx;
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parents:
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628 static int format_idx_sub;
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parents:
diff changeset
629 static Uint16 format_list[NUM_FORMATS][NUM_FORMATS] = {
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parents:
diff changeset
630 { AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB },
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parents:
diff changeset
631 { AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB },
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parents:
diff changeset
632 { AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8 },
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parents:
diff changeset
633 { AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8 },
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parents:
diff changeset
634 { AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U8, AUDIO_S8 },
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parents:
diff changeset
635 { AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U8, AUDIO_S8 },
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parents:
diff changeset
636 };
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parents:
diff changeset
637
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parents:
diff changeset
638 Uint16 SDL_FirstAudioFormat(Uint16 format)
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parents:
diff changeset
639 {
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parents:
diff changeset
640 for ( format_idx=0; format_idx < NUM_FORMATS; ++format_idx ) {
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parents:
diff changeset
641 if ( format_list[format_idx][0] == format ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 }
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parents:
diff changeset
645 format_idx_sub = 0;
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parents:
diff changeset
646 return(SDL_NextAudioFormat());
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parents:
diff changeset
647 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648
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parents:
diff changeset
649 Uint16 SDL_NextAudioFormat(void)
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parents:
diff changeset
650 {
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parents:
diff changeset
651 if ( (format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS) ) {
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parents:
diff changeset
652 return(0);
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parents:
diff changeset
653 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 return(format_list[format_idx][format_idx_sub++]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 void SDL_CalculateAudioSpec(SDL_AudioSpec *spec)
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parents:
diff changeset
658 {
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parents:
diff changeset
659 switch (spec->format) {
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parents:
diff changeset
660 case AUDIO_U8:
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parents:
diff changeset
661 spec->silence = 0x80;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
662 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
663 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
664 spec->silence = 0x00;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
665 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 spec->size = (spec->format&0xFF)/8;
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parents:
diff changeset
668 spec->size *= spec->channels;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
669 spec->size *= spec->samples;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 }