annotate src/audio/SDL_audio.c @ 644:594422ab8f9f

Atari MiNT: added more audio drivers
author Patrice Mandin <patmandin@gmail.com>
date Mon, 07 Jul 2003 19:16:03 +0000
parents 550bccdf04bd
children e92bcf2573cb
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, 1998, 1999, 2000, 2001, 2002 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Allow access to a raw mixing buffer */
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29 #include <stdlib.h>
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30 #include <stdio.h>
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31 #include <string.h>
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32
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33 #include "SDL.h"
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34 #include "SDL_audio.h"
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35 #include "SDL_timer.h"
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36 #include "SDL_error.h"
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37 #include "SDL_audio_c.h"
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38 #include "SDL_audiomem.h"
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39 #include "SDL_sysaudio.h"
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40
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41 /* Available audio drivers */
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42 static AudioBootStrap *bootstrap[] = {
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43 #ifdef OPENBSD_AUDIO_SUPPORT
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44 &OPENBSD_AUDIO_bootstrap,
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45 #endif
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46 #ifdef OSS_SUPPORT
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47 &DSP_bootstrap,
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48 &DMA_bootstrap,
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49 #endif
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50 #ifdef ALSA_SUPPORT
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51 &ALSA_bootstrap,
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52 #endif
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53 #ifdef SUNAUDIO_SUPPORT
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54 &SUNAUDIO_bootstrap,
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55 #endif
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56 #ifdef DMEDIA_SUPPORT
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57 &DMEDIA_bootstrap,
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58 #endif
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59 #ifdef ARTSC_SUPPORT
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60 &ARTSC_bootstrap,
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61 #endif
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62 #ifdef ESD_SUPPORT
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63 &ESD_bootstrap,
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64 #endif
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65 #ifdef NAS_SUPPORT
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66 &NAS_bootstrap,
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67 #endif
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68 #ifdef ENABLE_DIRECTX
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69 &DSOUND_bootstrap,
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70 #endif
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71 #ifdef ENABLE_WINDIB
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72 &WAVEOUT_bootstrap,
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73 #endif
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74 #ifdef __BEOS__
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75 &BAUDIO_bootstrap,
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76 #endif
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77 #if defined(macintosh) || TARGET_API_MAC_CARBON
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78 &SNDMGR_bootstrap,
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79 #endif
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80 #ifdef _AIX
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81 &Paud_bootstrap,
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82 #endif
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83 #ifdef ENABLE_AHI
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84 &AHI_bootstrap,
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85 #endif
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86 #ifdef MINTAUDIO_SUPPORT
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87 &MINTAUDIO_GSXB_bootstrap,
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88 &MINTAUDIO_MCSN_bootstrap,
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89 &MINTAUDIO_STFA_bootstrap,
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90 &MINTAUDIO_XBIOS_bootstrap,
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91 &MINTAUDIO_DMA8_bootstrap,
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92 #endif
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93 #ifdef DISKAUD_SUPPORT
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94 &DISKAUD_bootstrap,
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95 #endif
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96 #ifdef ENABLE_DC
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97 &DCAUD_bootstrap,
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98 #endif
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99 #ifdef DRENDERER_SUPPORT
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100 &DRENDERER_bootstrap,
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101 #endif
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102 NULL
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103 };
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104 SDL_AudioDevice *current_audio = NULL;
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105
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106 /* Various local functions */
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107 int SDL_AudioInit(const char *driver_name);
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108 void SDL_AudioQuit(void);
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109
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110 #ifdef ENABLE_AHI
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111 static int audio_configured = 0;
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112 #endif
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113
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114 /* The general mixing thread function */
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115 int SDL_RunAudio(void *audiop)
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116 {
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117 SDL_AudioDevice *audio = (SDL_AudioDevice *)audiop;
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118 Uint8 *stream;
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119 int stream_len;
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120 void *udata;
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121 void (*fill)(void *userdata,Uint8 *stream, int len);
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122 int silence;
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123 #ifdef ENABLE_AHI
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124 int started = 0;
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125
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126 /* AmigaOS NEEDS that the audio driver is opened in the thread that uses it! */
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127
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128 D(bug("Task audio started audio struct:<%lx>...\n",audiop));
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129
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130 D(bug("Before Openaudio..."));
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131 if(audio->OpenAudio(audio, &audio->spec)==-1)
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132 {
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133 D(bug("Open audio failed...\n"));
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134 return(-1);
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135 }
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136 D(bug("OpenAudio...OK\n"));
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137 #endif
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138
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139 /* Perform any thread setup */
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140 if ( audio->ThreadInit ) {
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141 audio->ThreadInit(audio);
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142 }
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143 audio->threadid = SDL_ThreadID();
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144
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145 /* Set up the mixing function */
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146 fill = audio->spec.callback;
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147 udata = audio->spec.userdata;
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148
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149 #ifdef ENABLE_AHI
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150 audio_configured = 1;
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151
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152 D(bug("Audio configured... Checking for conversion\n"));
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153 SDL_mutexP(audio->mixer_lock);
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154 D(bug("Semaphore obtained...\n"));
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155 #endif
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156
0
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157 if ( audio->convert.needed ) {
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158 if ( audio->convert.src_format == AUDIO_U8 ) {
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159 silence = 0x80;
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160 } else {
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161 silence = 0;
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162 }
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163 stream_len = audio->convert.len;
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164 } else {
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165 silence = audio->spec.silence;
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166 stream_len = audio->spec.size;
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167 }
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168 stream = audio->fake_stream;
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169
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170 #ifdef ENABLE_AHI
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171 SDL_mutexV(audio->mixer_lock);
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172 D(bug("Entering audio loop...\n"));
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173 #endif
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174
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175
0
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176 /* Loop, filling the audio buffers */
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177 while ( audio->enabled ) {
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178
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179 /* Wait for new current buffer to finish playing */
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180 if ( stream == audio->fake_stream ) {
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181 SDL_Delay((audio->spec.samples*1000)/audio->spec.freq);
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182 } else {
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183 #ifdef ENABLE_AHI
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184 if ( started > 1 )
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185 #endif
0
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186 audio->WaitAudio(audio);
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187 }
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188
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189 /* Fill the current buffer with sound */
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190 if ( audio->convert.needed ) {
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191 if ( audio->convert.buf ) {
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192 stream = audio->convert.buf;
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193 } else {
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194 continue;
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195 }
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196 } else {
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197 stream = audio->GetAudioBuf(audio);
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198 if ( stream == NULL ) {
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199 stream = audio->fake_stream;
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200 }
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201 }
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202 memset(stream, silence, stream_len);
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203
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204 if ( ! audio->paused ) {
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205 SDL_mutexP(audio->mixer_lock);
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206 (*fill)(udata, stream, stream_len);
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207 SDL_mutexV(audio->mixer_lock);
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208 }
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209
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210 /* Convert the audio if necessary */
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211 if ( audio->convert.needed ) {
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212 SDL_ConvertAudio(&audio->convert);
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213 stream = audio->GetAudioBuf(audio);
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214 if ( stream == NULL ) {
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215 stream = audio->fake_stream;
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216 }
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217 memcpy(stream, audio->convert.buf,
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218 audio->convert.len_cvt);
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219 }
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220
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221 /* Ready current buffer for play and change current buffer */
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222 if ( stream != audio->fake_stream ) {
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223 audio->PlayAudio(audio);
21
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224 #ifdef ENABLE_AHI
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diff changeset
225 /* AmigaOS don't have to wait the first time audio is played! */
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diff changeset
226 started++;
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diff changeset
227 #endif
0
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228 }
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229 }
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230 /* Wait for the audio to drain.. */
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231 if ( audio->WaitDone ) {
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232 audio->WaitDone(audio);
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233 }
21
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234
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235 #ifdef ENABLE_AHI
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diff changeset
236 D(bug("WaitAudio...Done\n"));
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237
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238 audio->CloseAudio(audio);
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239
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diff changeset
240 D(bug("CloseAudio..Done, subtask exiting...\n"));
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diff changeset
241 audio_configured = 0;
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diff changeset
242 #endif
0
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243 return(0);
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244 }
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diff changeset
245
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
246 static void SDL_LockAudio_Default(SDL_AudioDevice *audio)
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diff changeset
247 {
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diff changeset
248 if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) {
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diff changeset
249 return;
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diff changeset
250 }
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
251 SDL_mutexP(audio->mixer_lock);
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diff changeset
252 }
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
253
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
254 static void SDL_UnlockAudio_Default(SDL_AudioDevice *audio)
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
255 {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
256 if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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parents: 297
diff changeset
257 return;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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parents: 297
diff changeset
258 }
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
259 SDL_mutexV(audio->mixer_lock);
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
260 }
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
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diff changeset
261
0
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diff changeset
262 int SDL_AudioInit(const char *driver_name)
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diff changeset
263 {
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diff changeset
264 SDL_AudioDevice *audio;
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diff changeset
265 int i = 0, idx;
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diff changeset
266
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parents:
diff changeset
267 /* Check to make sure we don't overwrite 'current_audio' */
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parents:
diff changeset
268 if ( current_audio != NULL ) {
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diff changeset
269 SDL_AudioQuit();
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diff changeset
270 }
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diff changeset
271
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parents:
diff changeset
272 /* Select the proper audio driver */
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diff changeset
273 audio = NULL;
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parents:
diff changeset
274 idx = 0;
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parents:
diff changeset
275 #ifdef unix
74212992fb08 Initial revision
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parents:
diff changeset
276 if ( (driver_name == NULL) && (getenv("ESPEAKER") != NULL) ) {
74212992fb08 Initial revision
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diff changeset
277 /* Ahem, we know that if ESPEAKER is set, user probably wants
74212992fb08 Initial revision
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diff changeset
278 to use ESD, but don't start it if it's not already running.
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diff changeset
279 This probably isn't the place to do this, but... Shh! :)
74212992fb08 Initial revision
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diff changeset
280 */
74212992fb08 Initial revision
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parents:
diff changeset
281 for ( i=0; bootstrap[i]; ++i ) {
74212992fb08 Initial revision
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parents:
diff changeset
282 if ( strcmp(bootstrap[i]->name, "esd") == 0 ) {
74212992fb08 Initial revision
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parents:
diff changeset
283 const char *esd_no_spawn;
74212992fb08 Initial revision
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diff changeset
284
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parents:
diff changeset
285 /* Don't start ESD if it's not running */
74212992fb08 Initial revision
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parents:
diff changeset
286 esd_no_spawn = getenv("ESD_NO_SPAWN");
74212992fb08 Initial revision
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parents:
diff changeset
287 if ( esd_no_spawn == NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
288 putenv("ESD_NO_SPAWN=1");
74212992fb08 Initial revision
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parents:
diff changeset
289 }
74212992fb08 Initial revision
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parents:
diff changeset
290 if ( bootstrap[i]->available() ) {
74212992fb08 Initial revision
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parents:
diff changeset
291 audio = bootstrap[i]->create(0);
74212992fb08 Initial revision
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parents:
diff changeset
292 break;
74212992fb08 Initial revision
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parents:
diff changeset
293 }
74212992fb08 Initial revision
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parents:
diff changeset
294 #ifdef linux /* No unsetenv() on most platforms */
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parents:
diff changeset
295 if ( esd_no_spawn == NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
296 unsetenv("ESD_NO_SPAWN");
74212992fb08 Initial revision
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parents:
diff changeset
297 }
74212992fb08 Initial revision
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parents:
diff changeset
298 #endif
74212992fb08 Initial revision
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parents:
diff changeset
299 }
74212992fb08 Initial revision
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parents:
diff changeset
300 }
74212992fb08 Initial revision
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parents:
diff changeset
301 }
74212992fb08 Initial revision
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parents:
diff changeset
302 #endif /* unix */
74212992fb08 Initial revision
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parents:
diff changeset
303 if ( audio == NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
304 if ( driver_name != NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
305 #if 0 /* This will be replaced with a better driver selection API */
74212992fb08 Initial revision
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parents:
diff changeset
306 if ( strrchr(driver_name, ':') != NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
307 idx = atoi(strrchr(driver_name, ':')+1);
74212992fb08 Initial revision
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parents:
diff changeset
308 }
74212992fb08 Initial revision
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parents:
diff changeset
309 #endif
74212992fb08 Initial revision
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parents:
diff changeset
310 for ( i=0; bootstrap[i]; ++i ) {
74212992fb08 Initial revision
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parents:
diff changeset
311 if (strncmp(bootstrap[i]->name, driver_name,
74212992fb08 Initial revision
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parents:
diff changeset
312 strlen(bootstrap[i]->name)) == 0) {
74212992fb08 Initial revision
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parents:
diff changeset
313 if ( bootstrap[i]->available() ) {
74212992fb08 Initial revision
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parents:
diff changeset
314 audio=bootstrap[i]->create(idx);
74212992fb08 Initial revision
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parents:
diff changeset
315 break;
74212992fb08 Initial revision
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parents:
diff changeset
316 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 }
74212992fb08 Initial revision
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parents:
diff changeset
318 }
74212992fb08 Initial revision
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parents:
diff changeset
319 } else {
74212992fb08 Initial revision
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parents:
diff changeset
320 for ( i=0; bootstrap[i]; ++i ) {
74212992fb08 Initial revision
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parents:
diff changeset
321 if ( bootstrap[i]->available() ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 audio = bootstrap[i]->create(idx);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 if ( audio != NULL ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 if ( audio == NULL ) {
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parents:
diff changeset
330 SDL_SetError("No available audio device");
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 #if 0 /* Don't fail SDL_Init() if audio isn't available.
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parents:
diff changeset
332 SDL_OpenAudio() will handle it at that point. *sigh*
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 */
74212992fb08 Initial revision
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parents:
diff changeset
334 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 current_audio = audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 if ( current_audio ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 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
341 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
342 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
343 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
344 }
0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 char *SDL_AudioDriverName(char *namebuf, int maxlen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 if ( current_audio != NULL ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 strncpy(namebuf, current_audio->name, maxlen-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 namebuf[maxlen-1] = '\0';
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 return(namebuf);
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(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358
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parents:
diff changeset
359 int SDL_OpenAudio(SDL_AudioSpec *desired, SDL_AudioSpec *obtained)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 {
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parents:
diff changeset
361 SDL_AudioDevice *audio;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362
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parents:
diff changeset
363 /* Start up the audio driver, if necessary */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 if ( ! current_audio ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 if ( (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) ||
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 (current_audio == NULL) ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 return(-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
372 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
373 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
374 return(-1);
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
375 }
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
376
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 /* Verify some parameters */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 if ( desired->callback == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 SDL_SetError("SDL_OpenAudio() passed a NULL callback");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 switch ( desired->channels ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 case 1: /* Mono */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 case 2: /* Stereo */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 SDL_SetError("1 (mono) and 2 (stereo) channels supported");
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
630
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents: 509
diff changeset
391 #if defined(macintosh) || defined(__riscos__)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 /* FIXME: Need to implement PPC interrupt asm for SDL_LockAudio() */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 #else
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
394 #if defined(__MINT__) && !defined(ENABLE_THREADS)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
395 /* Uses interrupt driven audio, without thread */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
396 #else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 /* Create a semaphore for locking the sound buffers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 audio->mixer_lock = SDL_CreateMutex();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 if ( audio->mixer_lock == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 SDL_SetError("Couldn't create mixer lock");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 }
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
404 #endif /* __MINT__ */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
405 #endif /* macintosh */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 /* Calculate the silence and size of the audio specification */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 SDL_CalculateAudioSpec(desired);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 /* Open the audio subsystem */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 memcpy(&audio->spec, desired, sizeof(audio->spec));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 audio->convert.needed = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 audio->enabled = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 audio->paused = 1;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
415
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
416 #ifndef ENABLE_AHI
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
417
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
418 /* AmigaOS opens audio inside the main loop */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 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
420
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 if ( ! audio->opened ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
425 #else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
426 D(bug("Locking semaphore..."));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
427 SDL_mutexP(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
428
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
429 audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
430 D(bug("Created thread...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
431
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
432 if ( audio->thread == NULL ) {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
433 SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
434 SDL_CloseAudio();
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
435 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
436 return(-1);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
437 }
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
438
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
439 while(!audio_configured)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
440 SDL_Delay(100);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
441 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 /* If the audio driver changes the buffer size, accept it */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 if ( audio->spec.samples != desired->samples ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 desired->samples = audio->spec.samples;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 SDL_CalculateAudioSpec(desired);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 /* Allocate a fake audio memory buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 audio->fake_stream = SDL_AllocAudioMem(audio->spec.size);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 if ( audio->fake_stream == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 /* See if we need to do any conversion */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 if ( memcmp(desired, &audio->spec, sizeof(audio->spec)) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 /* Just copy over the desired audio specification */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 if ( obtained != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 memcpy(obtained, &audio->spec, sizeof(audio->spec));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 /* Copy over the audio specification if possible */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 if ( obtained != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 memcpy(obtained, &audio->spec, sizeof(audio->spec));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 /* Build an audio conversion block */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 if ( SDL_BuildAudioCVT(&audio->convert,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 desired->format, desired->channels,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 desired->freq,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 audio->spec.format, audio->spec.channels,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 audio->spec.freq) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 audio->convert.len = desired->size;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 audio->convert.buf =(Uint8 *)SDL_AllocAudioMem(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 audio->convert.len*audio->convert.len_mult);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 if ( audio->convert.buf == 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 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
490 #ifndef ENABLE_AHI
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 /* Start the audio thread if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 switch (audio->opened) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 /* Start the audio thread */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 if ( audio->thread == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 SDL_SetError("Couldn't create audio thread");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 /* The audio is now playing */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
507 #else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
508 SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
509 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
510
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
511 #endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
512
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 SDL_audiostatus SDL_GetAudioStatus(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 SDL_audiostatus status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 status = SDL_AUDIO_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 if ( audio && audio->enabled ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 if ( audio->paused ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 status = SDL_AUDIO_PAUSED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 status = SDL_AUDIO_PLAYING;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 return(status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 void SDL_PauseAudio (int pause_on)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 if ( audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 audio->paused = pause_on;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 void SDL_LockAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 /* 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
546 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
547 audio->LockAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 void SDL_UnlockAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 /* 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
556 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
557 audio->UnlockAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 }
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_CloseAudio (void)
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_QuitSubSystem(SDL_INIT_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
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 void SDL_AudioQuit(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 if ( audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 audio->enabled = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 if ( audio->thread != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 SDL_WaitThread(audio->thread, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 if ( audio->mixer_lock != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 SDL_DestroyMutex(audio->mixer_lock);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 if ( audio->fake_stream != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579 SDL_FreeAudioMem(audio->fake_stream);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 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
583
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
585 #ifndef ENABLE_AHI
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 if ( audio->opened ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 audio->CloseAudio(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 audio->opened = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
590 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 /* Free the driver data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 audio->free(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 current_audio = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 #define NUM_FORMATS 6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 static int format_idx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 static int format_idx_sub;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 static Uint16 format_list[NUM_FORMATS][NUM_FORMATS] = {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 { AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 { AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 { AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 { AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 { AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 { AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 Uint16 SDL_FirstAudioFormat(Uint16 format)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 for ( format_idx=0; format_idx < NUM_FORMATS; ++format_idx ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 if ( format_list[format_idx][0] == format ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 format_idx_sub = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 return(SDL_NextAudioFormat());
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 Uint16 SDL_NextAudioFormat(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 if ( (format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 return(format_list[format_idx][format_idx_sub++]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 void SDL_CalculateAudioSpec(SDL_AudioSpec *spec)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 switch (spec->format) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 case AUDIO_U8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 spec->silence = 0x80;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 spec->silence = 0x00;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 spec->size = (spec->format&0xFF)/8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 spec->size *= spec->channels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 spec->size *= spec->samples;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641 }