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annotate src/audio/macosx/SDL_coreaudio.c @ 3294:470d0a416aa7

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Fixed bug #714 fuzzyTew@gmail.com 2009-03-14 15:18:45 PDT patch to change HAVE_ICONV to HAVE_ICONV_H There are two separate iconv checks in configure -- one for the header file and one for the library. include/SDL_stdinc.h uses the library define to see whether or not it should reference the types defined in the header, which naturally breaks if the library exists and the header does not.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 21 Sep 2009 11:04:01 +0000
parents af4a5af3cd2b
children 023aa9699baa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 <CoreServices/CoreServices.h>
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26 #include <AudioUnit/AudioUnit.h>
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27 #if MAC_OS_X_VERSION_MAX_ALLOWED == 1050
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28 #include <AudioUnit/AUNTComponent.h>
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29 #endif
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30
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31 #include "SDL_audio.h"
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32 #include "../SDL_audio_c.h"
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33 #include "../SDL_sysaudio.h"
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34 #include "SDL_coreaudio.h"
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35
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36 #define DEBUG_COREAUDIO 0
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37
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38 typedef struct COREAUDIO_DeviceList
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39 {
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40 AudioDeviceID id;
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41 const char *name;
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42 } COREAUDIO_DeviceList;
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43
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44 static COREAUDIO_DeviceList *inputDevices = NULL;
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45 static int inputDeviceCount = 0;
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46 static COREAUDIO_DeviceList *outputDevices = NULL;
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47 static int outputDeviceCount = 0;
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48
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49 static void
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50 free_device_list(COREAUDIO_DeviceList ** devices, int *devCount)
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51 {
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52 if (*devices) {
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53 int i = *devCount;
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54 while (i--)
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55 SDL_free((void *) (*devices)[i].name);
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56 SDL_free(*devices);
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57 *devices = NULL;
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58 }
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59 *devCount = 0;
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60 }
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61
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62
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63 static void
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64 build_device_list(int iscapture, COREAUDIO_DeviceList ** devices,
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65 int *devCount)
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66 {
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67 Boolean outWritable = 0;
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68 OSStatus result = noErr;
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69 UInt32 size = 0;
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70 AudioDeviceID *devs = NULL;
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71 UInt32 i = 0;
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72 UInt32 max = 0;
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73
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74 free_device_list(devices, devCount);
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75
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76 result = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
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77 &size, &outWritable);
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78
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79 if (result != kAudioHardwareNoError)
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80 return;
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81
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82 devs = (AudioDeviceID *) alloca(size);
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83 if (devs == NULL)
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84 return;
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85
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86 max = size / sizeof(AudioDeviceID);
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87 *devices = (COREAUDIO_DeviceList *) SDL_malloc(max * sizeof(**devices));
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88 if (*devices == NULL)
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89 return;
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90
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91 result = AudioHardwareGetProperty(kAudioHardwarePropertyDevices,
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92 &size, devs);
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93 if (result != kAudioHardwareNoError)
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94 return;
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95
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96 for (i = 0; i < max; i++) {
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97 CFStringRef cfstr = NULL;
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98 char *ptr = NULL;
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99 AudioDeviceID dev = devs[i];
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100 AudioBufferList *buflist = NULL;
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101 int usable = 0;
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102 CFIndex len = 0;
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103
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104 result = AudioDeviceGetPropertyInfo(dev, 0, iscapture,
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105 kAudioDevicePropertyStreamConfiguration,
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106 &size, &outWritable);
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107 if (result != noErr)
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108 continue;
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109
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110 buflist = (AudioBufferList *) SDL_malloc(size);
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111 if (buflist == NULL)
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112 continue;
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113
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114 result = AudioDeviceGetProperty(dev, 0, iscapture,
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115 kAudioDevicePropertyStreamConfiguration,
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116 &size, buflist);
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117
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118 if (result == noErr) {
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119 UInt32 j;
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120 for (j = 0; j < buflist->mNumberBuffers; j++) {
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121 if (buflist->mBuffers[j].mNumberChannels > 0) {
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122 usable = 1;
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123 break;
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124 }
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125 }
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126 }
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127
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128 SDL_free(buflist);
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129
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130 if (!usable)
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131 continue;
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132
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133 size = sizeof(CFStringRef);
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134 result = AudioDeviceGetProperty(dev, 0, iscapture,
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135 kAudioDevicePropertyDeviceNameCFString,
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136 &size, &cfstr);
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137
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138 if (result != kAudioHardwareNoError)
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139 continue;
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140
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141 len = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstr),
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142 kCFStringEncodingUTF8);
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143
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144 ptr = (char *) SDL_malloc(len + 1);
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145 usable = ((ptr != NULL) &&
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146 (CFStringGetCString
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147 (cfstr, ptr, len + 1, kCFStringEncodingUTF8)));
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148
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149 CFRelease(cfstr);
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150
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151 if (usable) {
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152 len = strlen(ptr);
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153 /* Some devices have whitespace at the end...trim it. */
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154 while ((len > 0) && (ptr[len - 1] == ' ')) {
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155 len--;
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156 }
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157 usable = (len > 0);
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158 }
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159
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160 if (!usable) {
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161 SDL_free(ptr);
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162 } else {
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163 ptr[len] = '\0';
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164
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165 #if DEBUG_COREAUDIO
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166 printf("COREAUDIO: Found %s device #%d: '%s' (devid %d)\n",
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167 ((iscapture) ? "capture" : "output"),
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168 (int) *devCount, ptr, (int) dev);
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169 #endif
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170
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171 (*devices)[*devCount].id = dev;
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172 (*devices)[*devCount].name = ptr;
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173 (*devCount)++;
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174 }
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175 }
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176 }
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177
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178 static inline void
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179 build_device_lists(void)
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180 {
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181 build_device_list(0, &outputDevices, &outputDeviceCount);
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182 build_device_list(1, &inputDevices, &inputDeviceCount);
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183 }
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184
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185
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186 static inline void
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187 free_device_lists(void)
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188 {
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189 free_device_list(&outputDevices, &outputDeviceCount);
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190 free_device_list(&inputDevices, &inputDeviceCount);
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191 }
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192
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193
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194 static int
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195 find_device_id(const char *devname, int iscapture, AudioDeviceID * id)
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196 {
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197 int i = ((iscapture) ? inputDeviceCount : outputDeviceCount);
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198 COREAUDIO_DeviceList *devs = ((iscapture) ? inputDevices : outputDevices);
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199 while (i--) {
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200 if (SDL_strcmp(devname, devs->name) == 0) {
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201 *id = devs->id;
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202 return 1;
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203 }
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204 devs++;
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205 }
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206
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207 return 0;
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208 }
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209
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210
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211 static int
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212 COREAUDIO_DetectDevices(int iscapture)
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213 {
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214 if (iscapture) {
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215 build_device_list(1, &inputDevices, &inputDeviceCount);
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216 return inputDeviceCount;
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217 } else {
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218 build_device_list(0, &outputDevices, &outputDeviceCount);
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219 return outputDeviceCount;
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220 }
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221
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222 return 0; /* shouldn't ever hit this. */
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223 }
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224
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225
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226 static const char *
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227 COREAUDIO_GetDeviceName(int index, int iscapture)
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228 {
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229 if ((iscapture) && (index < inputDeviceCount)) {
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230 return inputDevices[index].name;
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231 } else if ((!iscapture) && (index < outputDeviceCount)) {
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232 return outputDevices[index].name;
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233 }
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234
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235 SDL_SetError("No such device");
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236 return NULL;
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237 }
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238
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239
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240 static void
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241 COREAUDIO_Deinitialize(void)
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242 {
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243 free_device_lists();
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244 }
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245
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246
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247 /* The CoreAudio callback */
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248 static OSStatus
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249 outputCallback(void *inRefCon,
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250 AudioUnitRenderActionFlags * ioActionFlags,
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251 const AudioTimeStamp * inTimeStamp,
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252 UInt32 inBusNumber, UInt32 inNumberFrames,
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253 AudioBufferList * ioDataList)
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254 {
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255 SDL_AudioDevice *this = (SDL_AudioDevice *) inRefCon;
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256 AudioBuffer *ioData = &ioDataList->mBuffers[0];
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257 UInt32 remaining, len;
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258 void *ptr;
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259
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260 /* Is there ever more than one buffer, and what do you do with it? */
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261 if (ioDataList->mNumberBuffers != 1) {
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262 return noErr;
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263 }
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264
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265 /* Only do anything if audio is enabled and not paused */
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266 if (!this->enabled || this->paused) {
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267 SDL_memset(ioData->mData, this->spec.silence, ioData->mDataByteSize);
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268 return 0;
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269 }
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270
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271 /* No SDL conversion should be needed here, ever, since we accept
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272 any input format in OpenAudio, and leave the conversion to CoreAudio.
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273 */
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274 /*
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275 assert(!this->convert.needed);
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276 assert(this->spec.channels == ioData->mNumberChannels);
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277 */
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278
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279 remaining = ioData->mDataByteSize;
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280 ptr = ioData->mData;
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281 while (remaining > 0) {
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282 if (this->hidden->bufferOffset >= this->hidden->bufferSize) {
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283 /* Generate the data */
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284 SDL_memset(this->hidden->buffer, this->spec.silence,
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285 this->hidden->bufferSize);
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286 SDL_mutexP(this->mixer_lock);
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287 (*this->spec.callback) (this->spec.userdata, this->hidden->buffer,
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288 this->hidden->bufferSize);
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289 SDL_mutexV(this->mixer_lock);
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290 this->hidden->bufferOffset = 0;
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291 }
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292
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293 len = this->hidden->bufferSize - this->hidden->bufferOffset;
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294 if (len > remaining)
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295 len = remaining;
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296 SDL_memcpy(ptr,
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297 (char *) this->hidden->buffer + this->hidden->bufferOffset,
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298 len);
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299 ptr = (char *) ptr + len;
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300 remaining -= len;
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301 this->hidden->bufferOffset += len;
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302 }
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303
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304 return 0;
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305 }
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306
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307 static OSStatus
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308 inputCallback(void *inRefCon,
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309 AudioUnitRenderActionFlags * ioActionFlags,
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310 const AudioTimeStamp * inTimeStamp,
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311 UInt32 inBusNumber, UInt32 inNumberFrames,
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312 AudioBufferList * ioData)
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313 {
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314 //err = AudioUnitRender(afr->fAudioUnit, ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, afr->fAudioBuffer);
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315 // !!! FIXME: write me!
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316 return noErr;
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317 }
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318
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319
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320 static void
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321 COREAUDIO_CloseDevice(_THIS)
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322 {
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323 if (this->hidden != NULL) {
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324 if (this->hidden->audioUnitOpened) {
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325 OSStatus result = noErr;
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326 AURenderCallbackStruct callback;
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327 const AudioUnitElement output_bus = 0;
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328 const AudioUnitElement input_bus = 1;
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329 const int iscapture = this->iscapture;
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330 const AudioUnitElement bus =
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331 ((iscapture) ? input_bus : output_bus);
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332 const AudioUnitScope scope =
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333 ((iscapture) ? kAudioUnitScope_Output :
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334 kAudioUnitScope_Input);
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335
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336 /* stop processing the audio unit */
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337 result = AudioOutputUnitStop(this->hidden->audioUnit);
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338
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339 /* Remove the input callback */
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340 SDL_memset(&callback, '\0', sizeof(AURenderCallbackStruct));
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341 result = AudioUnitSetProperty(this->hidden->audioUnit,
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342 kAudioUnitProperty_SetRenderCallback,
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343 scope, bus, &callback,
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344 sizeof(callback));
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345
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346 CloseComponent(this->hidden->audioUnit);
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347 this->hidden->audioUnitOpened = 0;
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348 }
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349 SDL_free(this->hidden->buffer);
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350 SDL_free(this->hidden);
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351 this->hidden = NULL;
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352 }
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353 }
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354
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355
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356 #define CHECK_RESULT(msg) \
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357 if (result != noErr) { \
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358 COREAUDIO_CloseDevice(this); \
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359 SDL_SetError("CoreAudio error (%s): %d", msg, (int) result); \
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360 return 0; \
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361 }
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362
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363 static int
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364 find_device_by_name(_THIS, const char *devname, int iscapture)
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365 {
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366 AudioDeviceID devid = 0;
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367 OSStatus result = noErr;
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368 UInt32 size = 0;
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369 UInt32 alive = 0;
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370 pid_t pid = 0;
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371
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372 if (devname == NULL) {
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373 size = sizeof(AudioDeviceID);
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374 const AudioHardwarePropertyID propid =
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375 ((iscapture) ? kAudioHardwarePropertyDefaultInputDevice :
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376 kAudioHardwarePropertyDefaultOutputDevice);
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377
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378 result = AudioHardwareGetProperty(propid, &size, &devid);
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379 CHECK_RESULT("AudioHardwareGetProperty (default device)");
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380 } else {
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381 if (!find_device_id(devname, iscapture, &devid)) {
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382 SDL_SetError("CoreAudio: No such audio device.");
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383 return 0;
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384 }
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385 }
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386
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387 size = sizeof(alive);
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388 result = AudioDeviceGetProperty(devid, 0, iscapture,
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389 kAudioDevicePropertyDeviceIsAlive,
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390 &size, &alive);
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391 CHECK_RESULT
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392 ("AudioDeviceGetProperty (kAudioDevicePropertyDeviceIsAlive)");
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393
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394 if (!alive) {
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395 SDL_SetError("CoreAudio: requested device exists, but isn't alive.");
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396 return 0;
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397 }
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398
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399 size = sizeof(pid);
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400 result = AudioDeviceGetProperty(devid, 0, iscapture,
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401 kAudioDevicePropertyHogMode, &size, &pid);
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402
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403 /* some devices don't support this property, so errors are fine here. */
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404 if ((result == noErr) && (pid != -1)) {
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405 SDL_SetError("CoreAudio: requested device is being hogged.");
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406 return 0;
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407 }
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408
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409 this->hidden->deviceID = devid;
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410 return 1;
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411 }
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diff changeset
412
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413
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diff changeset
414 static int
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415 prepare_audiounit(_THIS, const char *devname, int iscapture,
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416 const AudioStreamBasicDescription * strdesc)
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417 {
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418 OSStatus result = noErr;
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419 AURenderCallbackStruct callback;
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420 ComponentDescription desc;
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421 Component comp = NULL;
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422 UInt32 enableIO = 0;
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423 const AudioUnitElement output_bus = 0;
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424 const AudioUnitElement input_bus = 1;
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425 const AudioUnitElement bus = ((iscapture) ? input_bus : output_bus);
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426 const AudioUnitScope scope = ((iscapture) ? kAudioUnitScope_Output :
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427 kAudioUnitScope_Input);
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428
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429 if (!find_device_by_name(this, devname, iscapture)) {
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430 SDL_SetError("Couldn't find requested CoreAudio device");
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431 return 0;
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432 }
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433
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434 SDL_memset(&desc, '\0', sizeof(ComponentDescription));
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435 desc.componentType = kAudioUnitType_Output;
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436 desc.componentSubType = kAudioUnitSubType_HALOutput;
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437 desc.componentManufacturer = kAudioUnitManufacturer_Apple;
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438
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439 comp = FindNextComponent(NULL, &desc);
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440 if (comp == NULL) {
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441 SDL_SetError("Couldn't find requested CoreAudio component");
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442 return 0;
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443 }
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444
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445 /* Open & initialize the audio unit */
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446 result = OpenAComponent(comp, &this->hidden->audioUnit);
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447 CHECK_RESULT("OpenAComponent");
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448
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449 this->hidden->audioUnitOpened = 1;
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450
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451 // !!! FIXME: this is wrong?
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452 enableIO = ((iscapture) ? 1 : 0);
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453 result = AudioUnitSetProperty(this->hidden->audioUnit,
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454 kAudioOutputUnitProperty_EnableIO,
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455 kAudioUnitScope_Input, input_bus,
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456 &enableIO, sizeof(enableIO));
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457 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_EnableIO input)");
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458
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459 // !!! FIXME: this is wrong?
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460 enableIO = ((iscapture) ? 0 : 1);
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461 result = AudioUnitSetProperty(this->hidden->audioUnit,
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462 kAudioOutputUnitProperty_EnableIO,
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diff changeset
463 kAudioUnitScope_Output, output_bus,
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464 &enableIO, sizeof(enableIO));
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465 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_EnableIO output)");
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466
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diff changeset
467 result = AudioUnitSetProperty(this->hidden->audioUnit,
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diff changeset
468 kAudioOutputUnitProperty_CurrentDevice,
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diff changeset
469 kAudioUnitScope_Global, 0,
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470 &this->hidden->deviceID,
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471 sizeof(AudioDeviceID));
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472 CHECK_RESULT
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diff changeset
473 ("AudioUnitSetProperty (kAudioOutputUnitProperty_CurrentDevice)");
2049
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474
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diff changeset
475 /* Set the data format of the audio unit. */
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diff changeset
476 result = AudioUnitSetProperty(this->hidden->audioUnit,
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diff changeset
477 kAudioUnitProperty_StreamFormat,
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diff changeset
478 scope, bus, strdesc, sizeof(*strdesc));
2049
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diff changeset
479 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)");
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diff changeset
480
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diff changeset
481 /* Set the audio callback */
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diff changeset
482 SDL_memset(&callback, '\0', sizeof(AURenderCallbackStruct));
2049
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diff changeset
483 callback.inputProc = ((iscapture) ? inputCallback : outputCallback);
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diff changeset
484 callback.inputProcRefCon = this;
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diff changeset
485 result = AudioUnitSetProperty(this->hidden->audioUnit,
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diff changeset
486 kAudioUnitProperty_SetRenderCallback,
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diff changeset
487 scope, bus, &callback, sizeof(callback));
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488 CHECK_RESULT
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2057
diff changeset
489 ("AudioUnitSetProperty (kAudioUnitProperty_SetInputCallback)");
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
490
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
491 /* Calculate the final parameters for this audio specification */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
492 SDL_CalculateAudioSpec(&this->spec);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
493
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
494 /* Allocate a sample buffer */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
495 this->hidden->bufferOffset = this->hidden->bufferSize = this->spec.size;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
496 this->hidden->buffer = SDL_malloc(this->hidden->bufferSize);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
497
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
498 result = AudioUnitInitialize(this->hidden->audioUnit);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
499 CHECK_RESULT("AudioUnitInitialize");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
500
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
501 /* Finally, start processing of the audio unit */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
502 result = AudioOutputUnitStart(this->hidden->audioUnit);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
503 CHECK_RESULT("AudioOutputUnitStart");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
504
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
505 /* We're running! */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
506 return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
507 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
508
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
509
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
510 static int
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
511 COREAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
512 {
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
513 AudioStreamBasicDescription strdesc;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
514 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
515 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
516
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
517 /* Initialize all variables that we clean on shutdown */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
518 this->hidden = (struct SDL_PrivateAudioData *)
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2057
diff changeset
519 SDL_malloc((sizeof *this->hidden));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
520 if (this->hidden == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
521 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
522 return (0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
523 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
524 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
525
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
526 /* Setup a AudioStreamBasicDescription with the requested format */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
527 SDL_memset(&strdesc, '\0', sizeof(AudioStreamBasicDescription));
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
528 strdesc.mFormatID = kAudioFormatLinearPCM;
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
529 strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
530 strdesc.mChannelsPerFrame = this->spec.channels;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
531 strdesc.mSampleRate = this->spec.freq;
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
532 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
533
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
534 while ((!valid_datatype) && (test_format)) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
535 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
536 /* 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
537 switch (test_format) {
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
538 case AUDIO_U8:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
539 case AUDIO_S8:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
540 case AUDIO_U16LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
541 case AUDIO_S16LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
542 case AUDIO_U16MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
543 case AUDIO_S16MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
544 case AUDIO_S32LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
545 case AUDIO_S32MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
546 case AUDIO_F32LSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
547 case AUDIO_F32MSB:
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
548 valid_datatype = 1;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
549 strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(this->spec.format);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
550 if (SDL_AUDIO_ISBIGENDIAN(this->spec.format))
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
551 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
552
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
553 if (SDL_AUDIO_ISFLOAT(this->spec.format))
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
554 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsFloat;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
555 else if (SDL_AUDIO_ISSIGNED(this->spec.format))
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
556 strdesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
557 break;
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
558 }
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
559 }
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
560
2043
adf732f1f016 Formatting update
Sam Lantinga <slouken@libsdl.org>
parents: 2017
diff changeset
561 if (!valid_datatype) { /* shouldn't happen, but just in case... */
2055
72cc2226d6a3 Fix potential memory leaks if CoreAudio initialization fails.
Ryan C. Gordon <icculus@icculus.org>
parents: 2049
diff changeset
562 COREAUDIO_CloseDevice(this);
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
563 SDL_SetError("Unsupported audio format");
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
564 return 0;
2003
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
565 }
506851d3efa4 Mac OS X audio backend now supports int32/float32.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
566
2016
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
567 strdesc.mBytesPerFrame =
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
568 strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
569 strdesc.mBytesPerPacket =
72fa74928062 Compile fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 2003
diff changeset
570 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
571
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
572 if (!prepare_audiounit(this, devname, iscapture, &strdesc)) {
2057
c2fed8bb6700 Oh for crying out loud...
Ryan C. Gordon <icculus@icculus.org>
parents: 2055
diff changeset
573 COREAUDIO_CloseDevice(this);
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2057
diff changeset
574 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
575 }
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
576
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2057
diff changeset
577 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
578 }
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
579
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
580 static int
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2057
diff changeset
581 COREAUDIO_Init(SDL_AudioDriverImpl * impl)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
582 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
583 /* Set the function pointers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
584 impl->DetectDevices = COREAUDIO_DetectDevices;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
585 impl->GetDeviceName = COREAUDIO_GetDeviceName;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
586 impl->OpenDevice = COREAUDIO_OpenDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
587 impl->CloseDevice = COREAUDIO_CloseDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
588 impl->Deinitialize = COREAUDIO_Deinitialize;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
589 impl->ProvidesOwnCallbackThread = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
590
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2057
diff changeset
591 build_device_lists(); /* do an initial check for devices... */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
592
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2859
diff changeset
593 return (outputDeviceCount > 0) ? 2 : 1;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
594 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
595
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
596 AudioBootStrap COREAUDIO_bootstrap = {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
597 "coreaudio", "Mac OS X CoreAudio", COREAUDIO_Init, 0
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
598 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2043
diff changeset
599
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
600 /* vi: set ts=4 sw=4 expandtab: */