Mercurial > sdl-ios-xcode

annotate src/audio/macosx/SDL_coreaudio.c @ 3797:9dc81c6acaf5 SDL-ryan-multiple-audio-device

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Cut-and-paste typo fix.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 20:42:39 +0000
parents b19680c84cdf
children c8b3d3d13ed1
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include <CoreAudio/CoreAudio.h>
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25 #include <AudioUnit/AudioUnit.h>
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26
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27 #include "SDL_audio.h"
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28 #include "../SDL_audio_c.h"
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29 #include "../SDL_sysaudio.h"
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30 #include "SDL_coreaudio.h"
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31
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32 #define DEBUG_COREAUDIO 0
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33
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34 typedef struct COREAUDIO_DeviceList
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35 {
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36 AudioDeviceID id;
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37 const char *name;
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38 } COREAUDIO_DeviceList;
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39
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40 static COREAUDIO_DeviceList *inputDevices = NULL;
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41 static int inputDeviceCount = 0;
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42 static COREAUDIO_DeviceList *outputDevices = NULL;
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43 static int outputDeviceCount = 0;
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44
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45 static void
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46 free_device_list(COREAUDIO_DeviceList **devices, int *devCount)
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47 {
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48 if (*devices) {
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49 int i = *devCount;
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50 while (i--)
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51 SDL_free((void *) (*devices)[i].name);
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52 SDL_free(*devices);
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53 *devices = NULL;
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54 }
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55 *devCount = 0;
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56 }
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57
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58
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59 static void
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60 build_device_list(int iscapture, COREAUDIO_DeviceList **devices, int *devCount)
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61 {
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62 Boolean outWritable = 0;
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63 OSStatus result = noErr;
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64 UInt32 size = 0;
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65 AudioDeviceID *devs = NULL;
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66 UInt32 i = 0;
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67 UInt32 max = 0;
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68
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69 free_device_list(devices, devCount);
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70
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71 result = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
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72 &size, &outWritable);
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73
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74 if (result != kAudioHardwareNoError)
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75 return;
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76
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77 devs = (AudioDeviceID *) alloca(size);
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78 if (devs == NULL)
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79 return;
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80
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81 max = size / sizeof (AudioDeviceID);
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82 *devices = (COREAUDIO_DeviceList *) SDL_malloc(max * sizeof (**devices));
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83 if (*devices == NULL)
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84 return;
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85
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86 result = AudioHardwareGetProperty(kAudioHardwarePropertyDevices,
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87 &size, devs);
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88 if (result != kAudioHardwareNoError)
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89 return;
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90
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91 for (i = 0; i < max; i++) {
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92 CFStringRef cfstr = NULL;
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93 char *ptr = NULL;
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94 AudioDeviceID dev = devs[i];
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95 AudioBufferList *buflist = NULL;
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96 int usable = 0;
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97 CFIndex len = 0;
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98
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99 result = AudioDeviceGetPropertyInfo(dev, 0, iscapture,
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100 kAudioDevicePropertyStreamConfiguration,
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101 &size, &outWritable);
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102 if (result != noErr)
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103 continue;
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104
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105 buflist = (AudioBufferList *) SDL_malloc(size);
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106 if (buflist == NULL)
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107 continue;
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108
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109 result = AudioDeviceGetProperty(dev, 0, iscapture,
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110 kAudioDevicePropertyStreamConfiguration,
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111 &size, buflist);
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112
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113 if (result == noErr) {
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114 UInt32 j;
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115 for (j = 0; j < buflist->mNumberBuffers; j++) {
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116 if (buflist->mBuffers[j].mNumberChannels > 0) {
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117 usable = 1;
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118 break;
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119 }
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120 }
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121 }
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122
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123 SDL_free(buflist);
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124
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125 if (!usable)
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126 continue;
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127
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128 size = sizeof (CFStringRef);
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129 result = AudioDeviceGetProperty(dev, 0, iscapture,
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130 kAudioObjectPropertyName,
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diff changeset
131 &size, &cfstr);
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132
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133 if (result != kAudioHardwareNoError)
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134 continue;
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135
3788
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136 len = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstr),
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137 kCFStringEncodingUTF8);
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138
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139 ptr = (char *) SDL_malloc(len + 1);
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140 usable = ( (ptr != NULL) &&
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141 (CFStringGetCString(cfstr,ptr,len+1,kCFStringEncodingUTF8)) );
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142
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143 CFRelease(cfstr);
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144
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145 if (usable) {
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146 len = strlen(ptr);
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147 /* Some devices have whitespace at the end...trim it. */
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148 while ((len > 0) && (ptr[len-1] == ' ')) {
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149 len--;
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150 }
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151 usable = (len > 0);
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152 }
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153
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154 if (!usable) {
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155 SDL_free(ptr);
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156 } else {
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157 ptr[len] = '\0';
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158
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159 #if DEBUG_COREAUDIO
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160 printf("COREAUDIO: Found %s device #%d: '%s' (devid %d)\n",
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161 ((iscapture) ? "capture" : "output"),
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162 (int) *devCount, ptr, (int) dev);
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163 #endif
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164
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165 (*devices)[*devCount].id = dev;
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166 (*devices)[*devCount].name = ptr;
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167 (*devCount)++;
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168 }
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169 }
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170 }
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171
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172 static inline void
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173 build_device_lists(void)
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174 {
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175 build_device_list(0, &outputDevices, &outputDeviceCount);
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176 build_device_list(1, &inputDevices, &inputDeviceCount);
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177 }
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178
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179
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180 static inline void
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181 free_device_lists(void)
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182 {
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183 free_device_list(&outputDevices, &outputDeviceCount);
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184 free_device_list(&inputDevices, &inputDeviceCount);
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185 }
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186
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187
3785
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188 static int
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189 find_device_id(const char *devname, int iscapture, AudioDeviceID *id)
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diff changeset
190 {
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191 int i = ((iscapture) ? inputDeviceCount : outputDeviceCount);
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192 COREAUDIO_DeviceList *devs = ((iscapture) ? inputDevices : outputDevices);
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diff changeset
193 while (i--) {
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diff changeset
194 if (SDL_strcmp(devname, devs->name) == 0) {
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diff changeset
195 *id = devs->id;
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diff changeset
196 return 1;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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diff changeset
197 }
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diff changeset
198 devs++;
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diff changeset
199 }
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diff changeset
200
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diff changeset
201 return 0;
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diff changeset
202 }
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diff changeset
203
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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204
935
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diff changeset
205 /* Audio driver functions */
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parents:
diff changeset
206
3790
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diff changeset
207 static int COREAUDIO_DetectDevices(int iscapture);
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
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208 static const char *COREAUDIO_GetDeviceName(int index, int iscapture);
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diff changeset
209 static int COREAUDIO_OpenDevice(_THIS, const char *devname, int iscapture);
866c310e2cb5 Changed some 1.3 audio symbol names.
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210 static void COREAUDIO_WaitDevice(_THIS);
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diff changeset
211 static void COREAUDIO_PlayDevice(_THIS);
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diff changeset
212 static Uint8 *COREAUDIO_GetDeviceBuf(_THIS);
866c310e2cb5 Changed some 1.3 audio symbol names.
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213 static void COREAUDIO_CloseDevice(_THIS);
3787
8d74a4721ca9 Added deinitialize hook.
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diff changeset
214 static void COREAUDIO_Deinitialize(void);
935
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diff changeset
215
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
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parents:
diff changeset
216 /* Audio driver bootstrap functions */
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parents:
diff changeset
217
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
218 static int
3784
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diff changeset
219 COREAUDIO_Available(void)
935
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diff changeset
220 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
221 return (1);
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
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parents:
diff changeset
222 }
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parents:
diff changeset
223
3784
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diff changeset
224 static int
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diff changeset
225 COREAUDIO_Init(SDL_AudioDriverImpl *impl)
935
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parents:
diff changeset
226 {
3784
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diff changeset
227 /* Set the function pointers */
3790
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
228 impl->DetectDevices = COREAUDIO_DetectDevices;
3792
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diff changeset
229 impl->GetDeviceName = COREAUDIO_GetDeviceName;
866c310e2cb5 Changed some 1.3 audio symbol names.
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diff changeset
230 impl->OpenDevice = COREAUDIO_OpenDevice;
866c310e2cb5 Changed some 1.3 audio symbol names.
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diff changeset
231 impl->WaitDevice = COREAUDIO_WaitDevice;
866c310e2cb5 Changed some 1.3 audio symbol names.
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diff changeset
232 impl->PlayDevice = COREAUDIO_PlayDevice;
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
233 impl->GetDeviceBuf = COREAUDIO_GetDeviceBuf;
866c310e2cb5 Changed some 1.3 audio symbol names.
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diff changeset
234 impl->CloseDevice = COREAUDIO_CloseDevice;
3787
8d74a4721ca9 Added deinitialize hook.
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diff changeset
235 impl->Deinitialize = COREAUDIO_Deinitialize;
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
236 impl->ProvidesOwnCallbackThread = 1;
3784
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diff changeset
237 return 1;
935
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parents:
diff changeset
238 }
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 AudioBootStrap COREAUDIO_bootstrap = {
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 "coreaudio", "Mac OS X CoreAudio",
3784
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diff changeset
242 COREAUDIO_Available, COREAUDIO_Init
935
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parents:
diff changeset
243 };
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
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parents:
diff changeset
244
3787
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diff changeset
245
3790
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diff changeset
246 static int
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
247 COREAUDIO_DetectDevices(int iscapture)
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
248 {
8f8209f8da6d Added audio device enumeration for 1.3.
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parents: 3788
diff changeset
249 if (iscapture) {
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
250 build_device_list(1, &inputDevices, &inputDeviceCount);
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
251 return inputDeviceCount;
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
252 } else {
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
253 build_device_list(0, &outputDevices, &outputDeviceCount);
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
254 return outputDeviceCount;
8f8209f8da6d Added audio device enumeration for 1.3.
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parents: 3788
diff changeset
255 }
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
256
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
257 return 0; /* shouldn't ever hit this. */
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
258 }
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
259
8f8209f8da6d Added audio device enumeration for 1.3.
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diff changeset
260
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
261 static const char *
3792
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
262 COREAUDIO_GetDeviceName(int index, int iscapture)
3790
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diff changeset
263 {
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
264 if ((iscapture) && (index < inputDeviceCount)) {
8f8209f8da6d Added audio device enumeration for 1.3.
Ryan C. Gordon <icculus@icculus.org>
parents: 3788
diff changeset
265 return inputDevices[index].name;
8f8209f8da6d Added audio device enumeration for 1.3.
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parents: 3788
diff changeset
266 } else if ((!iscapture) && (index < outputDeviceCount)) {
8f8209f8da6d Added audio device enumeration for 1.3.
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267 return outputDevices[index].name;
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268 }
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269
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270 SDL_SetError("No such device");
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271 return NULL;
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272 }
8f8209f8da6d Added audio device enumeration for 1.3.
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273
8f8209f8da6d Added audio device enumeration for 1.3.
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274
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275 static void
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276 COREAUDIO_Deinitialize(void)
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277 {
3790
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278 free_device_lists();
3787
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279 }
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280
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281
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282 /* The CoreAudio callback */
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283 static OSStatus
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284 outputCallback(void *inRefCon,
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285 AudioUnitRenderActionFlags *ioActionFlags,
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286 const AudioTimeStamp * inTimeStamp,
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287 UInt32 inBusNumber, UInt32 inNumberFrames,
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diff changeset
288 AudioBufferList *ioDataList)
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289 {
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290 SDL_AudioDevice *this = (SDL_AudioDevice *) inRefCon;
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291 AudioBuffer *ioData = &ioDataList->mBuffers[0];
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292 UInt32 remaining, len;
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293 void *ptr;
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294
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295 /*
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296 * !!! FIXME: I'm not sure if you can ever have more than one
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297 * buffer, or what this signifies, or what to do with it...
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298 */
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299 if (ioDataList->mNumberBuffers != 1) {
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300 return noErr;
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301 }
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302
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303 /* Only do anything if audio is enabled and not paused */
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304 if (!this->enabled || this->paused) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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diff changeset
305 SDL_memset(ioData->mData, this->spec.silence, ioData->mDataByteSize);
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306 return 0;
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307 }
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308
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309 /* No SDL conversion should be needed here, ever, since we accept
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diff changeset
310 any input format in OpenAudio, and leave the conversion to CoreAudio.
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diff changeset
311 */
1338
604d73db6802 Removed uses of stdlib.h and string.h
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diff changeset
312 /*
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diff changeset
313 assert(!this->convert.needed);
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diff changeset
314 assert(this->spec.channels == ioData->mNumberChannels);
1338
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diff changeset
315 */
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diff changeset
316
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317 remaining = ioData->mDataByteSize;
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318 ptr = ioData->mData;
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diff changeset
319 while (remaining > 0) {
3784
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diff changeset
320 if (this->hidden->bufferOffset >= this->hidden->bufferSize) {
935
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321 /* Generate the data */
3784
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322 SDL_memset(this->hidden->buffer, this->spec.silence,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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diff changeset
323 this->hidden->bufferSize);
935
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diff changeset
324 SDL_mutexP(this->mixer_lock);
3784
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325 (*this->spec.callback) (this->spec.userdata, this->hidden->buffer,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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diff changeset
326 this->hidden->bufferSize);
935
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diff changeset
327 SDL_mutexV(this->mixer_lock);
3784
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diff changeset
328 this->hidden->bufferOffset = 0;
935
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diff changeset
329 }
1895
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parents: 1487
diff changeset
330
3784
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diff changeset
331 len = this->hidden->bufferSize - this->hidden->bufferOffset;
935
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diff changeset
332 if (len > remaining)
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parents:
diff changeset
333 len = remaining;
3784
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diff changeset
334 SDL_memcpy(ptr,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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diff changeset
335 (char *) this->hidden->buffer + this->hidden->bufferOffset,
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
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parents: 2043
diff changeset
336 len);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1487
diff changeset
337 ptr = (char *) ptr + len;
935
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parents:
diff changeset
338 remaining -= len;
3784
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diff changeset
339 this->hidden->bufferOffset += len;
935
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parents:
diff changeset
340 }
1895
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parents: 1487
diff changeset
341
935
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diff changeset
342 return 0;
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
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parents:
diff changeset
343 }
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
344
3785
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diff changeset
345 static OSStatus
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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diff changeset
346 inputCallback(void *inRefCon,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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diff changeset
347 AudioUnitRenderActionFlags *ioActionFlags,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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diff changeset
348 const AudioTimeStamp * inTimeStamp,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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parents: 3784
diff changeset
349 UInt32 inBusNumber, UInt32 inNumberFrames,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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parents: 3784
diff changeset
350 AudioBufferList *ioData)
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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parents: 3784
diff changeset
351 {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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parents: 3784
diff changeset
352 //err = AudioUnitRender(afr->fAudioUnit, ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, afr->fAudioBuffer);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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parents: 3784
diff changeset
353 // !!! FIXME: write me!
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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parents: 3784
diff changeset
354 return noErr;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
355 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
356
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
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diff changeset
357
935
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parents:
diff changeset
358 /* Dummy functions -- we don't use thread-based audio */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 3792
diff changeset
359 static void
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
360 COREAUDIO_WaitDevice(_THIS)
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
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parents:
diff changeset
361 {
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
362 return;
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
363 }
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
364
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 3792
diff changeset
365 static void
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
366 COREAUDIO_PlayDevice(_THIS)
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
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parents:
diff changeset
367 {
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368 return;
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369 }
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 3792
diff changeset
371 static Uint8 *
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
372 COREAUDIO_GetDeviceBuf(_THIS)
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
373 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
374 return (NULL);
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375 }
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 3792
diff changeset
377 static void
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
378 COREAUDIO_CloseDevice(_THIS)
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
379 {
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
380 if (this->hidden != NULL) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
381 OSStatus result = noErr;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
382 AURenderCallbackStruct callback;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
383 const AudioUnitElement output_bus = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
384 const AudioUnitElement input_bus = 1;
3796
b19680c84cdf Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of
Ryan C. Gordon <icculus@icculus.org>
parents: 3795
diff changeset
385 const int iscapture = this->iscapture;
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
386 const AudioUnitElement bus = ((iscapture) ? input_bus : output_bus);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
387 const AudioUnitScope scope = ((iscapture) ? kAudioUnitScope_Output :
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
388 kAudioUnitScope_Input);
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
389
3785
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
390 /* stop processing the audio unit */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
391 result = AudioOutputUnitStop(this->hidden->audioUnit);
935
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
392
3785
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Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
393 /* Remove the input callback */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
394 memset(&callback, '\0', sizeof (AURenderCallbackStruct));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
395 result = AudioUnitSetProperty(this->hidden->audioUnit,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
396 kAudioUnitProperty_SetRenderCallback,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
397 scope, bus, &callback, sizeof (callback));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
398
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
399 CloseComponent(this->hidden->audioUnit);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
400
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
401 SDL_free(this->hidden->buffer);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
402 SDL_free(this->hidden);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
403 this->hidden = NULL;
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404 }
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
405 }
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
406
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
407
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408 #define CHECK_RESULT(msg) \
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 if (result != noErr) { \
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
410 COREAUDIO_CloseDevice(this); \
2017
df06e6eb65c6 Fixed macosx audio initialization (passed wrong struct to CoreAudio).
Ryan C. Gordon <icculus@icculus.org>
parents: 2016
diff changeset
411 SDL_SetError("CoreAudio error (%s): %d", msg, (int) result); \
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
412 return 0; \
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
413 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
414
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
415 static int
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
416 find_device_by_name(_THIS, const char *devname, int iscapture)
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
417 {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
418 AudioDeviceID devid = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
419 OSStatus result = noErr;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
420 UInt32 size = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
421 UInt32 alive = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
422 pid_t pid = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
423
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
424 if (devname == NULL) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
425 size = sizeof (AudioDeviceID);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
426 const AudioHardwarePropertyID propid =
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
427 ((iscapture) ? kAudioHardwarePropertyDefaultInputDevice :
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
428 kAudioHardwarePropertyDefaultOutputDevice);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
429
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
430 result = AudioHardwareGetProperty(propid, &size, &devid);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
431 CHECK_RESULT("AudioHardwareGetProperty (default device)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
432 } else {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
433 if (!find_device_id(devname, iscapture, &devid)) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
434 SDL_SetError("CoreAudio: No such audio device.");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
435 return 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
436 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
437 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
438
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
439 size = sizeof (alive);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
440 result = AudioDeviceGetProperty(devid, 0, iscapture,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
441 kAudioDevicePropertyDeviceIsAlive,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
442 &size, &alive);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
443 CHECK_RESULT("AudioDeviceGetProperty (kAudioDevicePropertyDeviceIsAlive)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
444
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
445 if (!alive) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
446 SDL_SetError("CoreAudio: requested device exists, but isn't alive.");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
447 return 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
448 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
449
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
450 size = sizeof (pid);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
451 result = AudioDeviceGetProperty(devid, 0, iscapture,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
452 kAudioDevicePropertyHogMode, &size, &pid);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
453
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
454 /* some devices don't support this property, so errors are fine here. */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
455 if ((result == noErr) && (pid != -1)) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
456 SDL_SetError("CoreAudio: requested device is being hogged.");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
457 return 0;
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
458 }
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
459
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
460 this->hidden->deviceID = devid;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
461 return 1;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
462 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
463
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
464
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
465 static int
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
466 prepare_audiounit(_THIS, const char *devname, int iscapture,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
467 const AudioStreamBasicDescription *strdesc)
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
468 {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
469 OSStatus result = noErr;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
470 AURenderCallbackStruct callback;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
471 ComponentDescription desc;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
472 Component comp = NULL;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
473 int use_system_device = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
474 UInt32 enableIO = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
475 const AudioUnitElement output_bus = 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
476 const AudioUnitElement input_bus = 1;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
477 const AudioUnitElement bus = ((iscapture) ? input_bus : output_bus);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
478 const AudioUnitScope scope = ((iscapture) ? kAudioUnitScope_Output :
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
479 kAudioUnitScope_Input);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
480
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
481 if (!find_device_by_name(this, devname, iscapture)) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
482 SDL_SetError("Couldn't find requested CoreAudio device");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
483 return 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
484 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
485
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
486 memset(&desc, '\0', sizeof(ComponentDescription));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
487 desc.componentType = kAudioUnitType_Output;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
488 desc.componentSubType = kAudioUnitSubType_HALOutput;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
489 desc.componentManufacturer = kAudioUnitManufacturer_Apple;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
490
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
491 comp = FindNextComponent(NULL, &desc);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
492 if (comp == NULL) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
493 SDL_SetError("Couldn't find requested CoreAudio component");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
494 return 0;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
495 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
496
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
497 /* Open & initialize the audio unit */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
498 result = OpenAComponent(comp, &this->hidden->audioUnit);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
499 CHECK_RESULT("OpenAComponent");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
500
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
501 // !!! FIXME: this is wrong?
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
502 enableIO = ((iscapture) ? 1 : 0);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
503 result = AudioUnitSetProperty(this->hidden->audioUnit,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
504 kAudioOutputUnitProperty_EnableIO,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
505 kAudioUnitScope_Input, input_bus,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
506 &enableIO, sizeof (enableIO));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
507 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_EnableIO input)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
508
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
509 // !!! FIXME: this is wrong?
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
510 enableIO = ((iscapture) ? 0 : 1);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
511 result = AudioUnitSetProperty(this->hidden->audioUnit,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
512 kAudioOutputUnitProperty_EnableIO,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
513 kAudioUnitScope_Output, output_bus,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
514 &enableIO, sizeof (enableIO));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
515 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_EnableIO output)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
516
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
517 result = AudioUnitSetProperty(this->hidden->audioUnit,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
518 kAudioOutputUnitProperty_CurrentDevice,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
519 kAudioUnitScope_Global, 0,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
520 &this->hidden->deviceID,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
521 sizeof (AudioDeviceID));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
522 CHECK_RESULT("AudioUnitSetProperty (kAudioOutputUnitProperty_CurrentDevice)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
523
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
524 /* Set the data format of the audio unit. */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
525 result = AudioUnitSetProperty(this->hidden->audioUnit,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
526 kAudioUnitProperty_StreamFormat,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
527 scope, bus, strdesc, sizeof (*strdesc));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
528 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
529
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
530 /* Set the audio callback */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
531 memset(&callback, '\0', sizeof (AURenderCallbackStruct));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
532 callback.inputProc = ((iscapture) ? inputCallback : outputCallback);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
533 callback.inputProcRefCon = this;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
534 result = AudioUnitSetProperty(this->hidden->audioUnit,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
535 kAudioUnitProperty_SetRenderCallback,
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
536 scope, bus, &callback, sizeof (callback));
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
537 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_SetInputCallback)");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
538
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
539 /* Calculate the final parameters for this audio specification */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
540 SDL_CalculateAudioSpec(&this->spec);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
541
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
542 /* Allocate a sample buffer */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
543 this->hidden->bufferOffset = this->hidden->bufferSize = this->spec.size;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
544 this->hidden->buffer = SDL_malloc(this->hidden->bufferSize);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
545
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
546 result = AudioUnitInitialize(this->hidden->audioUnit);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
547 CHECK_RESULT("AudioUnitInitialize");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
548
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
549 /* Finally, start processing of the audio unit */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
550 result = AudioOutputUnitStart(this->hidden->audioUnit);
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
551 CHECK_RESULT("AudioOutputUnitStart");
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
552
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
553 /* We're running! */
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
554 return 1;
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
555 }
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
556
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
557
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 3792
diff changeset
558 static int
3792
866c310e2cb5 Changed some 1.3 audio symbol names.
Ryan C. Gordon <icculus@icculus.org>
parents: 3790
diff changeset
559 COREAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
560 {
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
561 AudioStreamBasicDescription strdesc;
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
562 SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
563 int valid_datatype = 0;
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
564
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
565 /* Initialize all variables that we clean on shutdown */
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
566 this->hidden = (struct SDL_PrivateAudioData *)
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
567 SDL_malloc((sizeof *this->hidden));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
568 if (this->hidden == NULL) {
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
569 SDL_OutOfMemory();
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
570 return (0);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
571 }
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
572 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
573
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
574 /* Setup a AudioStreamBasicDescription with the requested format */
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
575 memset(&strdesc, '\0', sizeof(AudioStreamBasicDescription));
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
576 strdesc.mFormatID = kAudioFormatLinearPCM;
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
577 strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked;
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
578 strdesc.mChannelsPerFrame = this->spec.channels;
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
579 strdesc.mSampleRate = this->spec.freq;
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
580 strdesc.mFramesPerPacket = 1;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
581
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
582 while ((!valid_datatype) && (test_format)) {
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
583 this->spec.format = test_format;
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
584 /* Just a list of valid SDL formats, so people don't pass junk here. */
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
585 switch (test_format) {
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
586 case AUDIO_U8:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
587 case AUDIO_S8:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
588 case AUDIO_U16LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
589 case AUDIO_S16LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
590 case AUDIO_U16MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
591 case AUDIO_S16MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
592 case AUDIO_S32LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
593 case AUDIO_S32MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
594 case AUDIO_F32LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
595 case AUDIO_F32MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
596 valid_datatype = 1;
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
597 strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(this->spec.format);
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
598 if (SDL_AUDIO_ISBIGENDIAN(this->spec.format))
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
599 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
600
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
601 if (SDL_AUDIO_ISFLOAT(this->spec.format))
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
602 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsFloat;
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
603 else if (SDL_AUDIO_ISSIGNED(this->spec.format))
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
604 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
605 break;
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
606 }
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
607 }
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
608
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
609 if (!valid_datatype) { /* shouldn't happen, but just in case... */
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
610 SDL_SetError("Unsupported audio format");
3784
37c9c4590689 First batch of heavy lifting on supporting multiple audio devices at once.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
611 return 0;
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
612 }
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
613
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
614 strdesc.mBytesPerFrame =
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
615 strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
616 strdesc.mBytesPerPacket =
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
617 strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
618
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
619 if (!prepare_audiounit(this, devname, iscapture, &strdesc)) {
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
620 return 0; /* prepare_audiounit() will call SDL_SetError()... */
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
621 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
622
3785
da2ea0694d11 Ton of work on CoreAudio driver for new 1.3 features...most of the
Ryan C. Gordon <icculus@icculus.org>
parents: 3784
diff changeset
623 return 1; /* good to go. */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
624 }
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
625
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1487
diff changeset
626 /* vi: set ts=4 sw=4 expandtab: */