1 | /* |
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2 | * QEMU OS X CoreAudio audio driver |
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3 | * |
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4 | * Copyright (c) 2005 Mike Kronenberg |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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7 | * of this software and associated documentation files (the "Software"), to deal |
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8 | * in the Software without restriction, including without limitation the rights |
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9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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10 | * copies of the Software, and to permit persons to whom the Software is |
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11 | * furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included in |
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14 | * all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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22 | * THE SOFTWARE. |
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23 | */ |
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24 | |
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25 | #include <CoreAudio/CoreAudio.h> |
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26 | #include <string.h> /* strerror */ |
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27 | #include <pthread.h> /* pthread_X */ |
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28 | |
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29 | #include "vl.h" |
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30 | |
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31 | #define AUDIO_CAP "coreaudio" |
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32 | #include "audio_int.h" |
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33 | |
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34 | struct { |
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35 | int buffer_frames; |
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36 | int nbuffers; |
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37 | int isAtexit; |
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38 | } conf = { |
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39 | .buffer_frames = 512, |
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40 | .nbuffers = 4, |
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41 | .isAtexit = 0 |
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42 | }; |
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43 | |
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44 | typedef struct coreaudioVoiceOut { |
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45 | HWVoiceOut hw; |
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46 | pthread_mutex_t mutex; |
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47 | int isAtexit; |
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48 | AudioDeviceID outputDeviceID; |
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49 | UInt32 audioDevicePropertyBufferFrameSize; |
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50 | AudioStreamBasicDescription outputStreamBasicDescription; |
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51 | int live; |
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52 | int decr; |
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53 | int rpos; |
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54 | } coreaudioVoiceOut; |
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55 | |
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56 | static void coreaudio_logstatus (OSStatus status) |
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57 | { |
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58 | char *str = "BUG"; |
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59 | |
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60 | switch(status) { |
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61 | case kAudioHardwareNoError: |
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62 | str = "kAudioHardwareNoError"; |
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63 | break; |
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64 | |
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65 | case kAudioHardwareNotRunningError: |
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66 | str = "kAudioHardwareNotRunningError"; |
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67 | break; |
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68 | |
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69 | case kAudioHardwareUnspecifiedError: |
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70 | str = "kAudioHardwareUnspecifiedError"; |
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71 | break; |
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72 | |
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73 | case kAudioHardwareUnknownPropertyError: |
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74 | str = "kAudioHardwareUnknownPropertyError"; |
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75 | break; |
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76 | |
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77 | case kAudioHardwareBadPropertySizeError: |
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78 | str = "kAudioHardwareBadPropertySizeError"; |
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79 | break; |
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80 | |
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81 | case kAudioHardwareIllegalOperationError: |
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82 | str = "kAudioHardwareIllegalOperationError"; |
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83 | break; |
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84 | |
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85 | case kAudioHardwareBadDeviceError: |
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86 | str = "kAudioHardwareBadDeviceError"; |
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87 | break; |
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88 | |
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89 | case kAudioHardwareBadStreamError: |
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90 | str = "kAudioHardwareBadStreamError"; |
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91 | break; |
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92 | |
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93 | case kAudioHardwareUnsupportedOperationError: |
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94 | str = "kAudioHardwareUnsupportedOperationError"; |
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95 | break; |
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96 | |
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97 | case kAudioDeviceUnsupportedFormatError: |
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98 | str = "kAudioDeviceUnsupportedFormatError"; |
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99 | break; |
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100 | |
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101 | case kAudioDevicePermissionsError: |
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102 | str = "kAudioDevicePermissionsError"; |
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103 | break; |
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104 | |
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105 | default: |
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106 | AUD_log (AUDIO_CAP, "Reason: status code %ld\n", status); |
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107 | return; |
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108 | } |
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109 | |
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110 | AUD_log (AUDIO_CAP, "Reason: %s\n", str); |
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111 | } |
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112 | |
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113 | static void GCC_FMT_ATTR (2, 3) coreaudio_logerr ( |
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114 | OSStatus status, |
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115 | const char *fmt, |
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116 | ... |
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117 | ) |
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118 | { |
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119 | va_list ap; |
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120 | |
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121 | va_start (ap, fmt); |
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122 | AUD_log (AUDIO_CAP, fmt, ap); |
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123 | va_end (ap); |
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124 | |
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125 | coreaudio_logstatus (status); |
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126 | } |
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127 | |
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128 | static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 ( |
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129 | OSStatus status, |
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130 | const char *typ, |
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131 | const char *fmt, |
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132 | ... |
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133 | ) |
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134 | { |
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135 | va_list ap; |
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136 | |
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137 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
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138 | |
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139 | va_start (ap, fmt); |
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140 | AUD_vlog (AUDIO_CAP, fmt, ap); |
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141 | va_end (ap); |
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142 | |
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143 | coreaudio_logstatus (status); |
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144 | } |
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145 | |
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146 | static inline UInt32 isPlaying (AudioDeviceID outputDeviceID) |
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147 | { |
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148 | OSStatus status; |
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149 | UInt32 result = 0; |
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150 | UInt32 propertySize = sizeof(outputDeviceID); |
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151 | status = AudioDeviceGetProperty( |
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152 | outputDeviceID, 0, 0, |
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153 | kAudioDevicePropertyDeviceIsRunning, &propertySize, &result); |
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154 | if (status != kAudioHardwareNoError) { |
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155 | coreaudio_logerr(status, |
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156 | "Could not determine whether Device is playing\n"); |
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157 | } |
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158 | return result; |
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159 | } |
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160 | |
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161 | static void coreaudio_atexit (void) |
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162 | { |
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163 | conf.isAtexit = 1; |
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164 | } |
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165 | |
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166 | static int coreaudio_lock (coreaudioVoiceOut *core, const char *fn_name) |
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167 | { |
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168 | int err; |
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169 | |
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170 | err = pthread_mutex_lock (&core->mutex); |
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171 | if (err) { |
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172 | dolog ("Could not lock voice for %s\nReason: %s\n", |
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173 | fn_name, strerror (err)); |
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174 | return -1; |
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175 | } |
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176 | return 0; |
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177 | } |
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178 | |
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179 | static int coreaudio_unlock (coreaudioVoiceOut *core, const char *fn_name) |
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180 | { |
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181 | int err; |
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182 | |
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183 | err = pthread_mutex_unlock (&core->mutex); |
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184 | if (err) { |
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185 | dolog ("Could not unlock voice for %s\nReason: %s\n", |
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186 | fn_name, strerror (err)); |
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187 | return -1; |
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188 | } |
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189 | return 0; |
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190 | } |
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191 | |
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192 | static int coreaudio_run_out (HWVoiceOut *hw) |
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193 | { |
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194 | int live, decr; |
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195 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
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196 | |
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197 | if (coreaudio_lock (core, "coreaudio_run_out")) { |
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198 | return 0; |
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199 | } |
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200 | |
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201 | live = audio_pcm_hw_get_live_out (hw); |
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202 | |
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203 | if (core->decr > live) { |
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204 | ldebug ("core->decr %d live %d core->live %d\n", |
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205 | core->decr, |
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206 | live, |
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207 | core->live); |
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208 | } |
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209 | |
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210 | decr = audio_MIN (core->decr, live); |
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211 | core->decr -= decr; |
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212 | |
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213 | core->live = live - decr; |
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214 | hw->rpos = core->rpos; |
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215 | |
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216 | coreaudio_unlock (core, "coreaudio_run_out"); |
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217 | return decr; |
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218 | } |
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219 | |
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220 | /* callback to feed audiooutput buffer */ |
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221 | static OSStatus audioDeviceIOProc( |
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222 | AudioDeviceID inDevice, |
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223 | const AudioTimeStamp* inNow, |
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224 | const AudioBufferList* inInputData, |
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225 | const AudioTimeStamp* inInputTime, |
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226 | AudioBufferList* outOutputData, |
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227 | const AudioTimeStamp* inOutputTime, |
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228 | void* hwptr) |
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229 | { |
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230 | UInt32 frame, frameCount; |
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231 | float *out = outOutputData->mBuffers[0].mData; |
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232 | HWVoiceOut *hw = hwptr; |
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233 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hwptr; |
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234 | int rpos, live; |
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235 | st_sample_t *src; |
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236 | #ifndef FLOAT_MIXENG |
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237 | #ifdef RECIPROCAL |
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238 | const float scale = 1.f / UINT_MAX; |
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239 | #else |
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240 | const float scale = UINT_MAX; |
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241 | #endif |
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242 | #endif |
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243 | |
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244 | if (coreaudio_lock (core, "audioDeviceIOProc")) { |
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245 | inInputTime = 0; |
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246 | return 0; |
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247 | } |
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248 | |
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249 | frameCount = core->audioDevicePropertyBufferFrameSize; |
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250 | live = core->live; |
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251 | |
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252 | /* if there are not enough samples, set signal and return */ |
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253 | if (live < frameCount) { |
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254 | inInputTime = 0; |
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255 | coreaudio_unlock (core, "audioDeviceIOProc(empty)"); |
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256 | return 0; |
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257 | } |
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258 | |
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259 | rpos = core->rpos; |
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260 | src = hw->mix_buf + rpos; |
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261 | |
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262 | /* fill buffer */ |
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263 | for (frame = 0; frame < frameCount; frame++) { |
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264 | #ifdef FLOAT_MIXENG |
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265 | *out++ = src[frame].l; /* left channel */ |
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266 | *out++ = src[frame].r; /* right channel */ |
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267 | #else |
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268 | #ifdef RECIPROCAL |
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269 | *out++ = src[frame].l * scale; /* left channel */ |
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270 | *out++ = src[frame].r * scale; /* right channel */ |
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271 | #else |
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272 | *out++ = src[frame].l / scale; /* left channel */ |
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273 | *out++ = src[frame].r / scale; /* right channel */ |
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274 | #endif |
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275 | #endif |
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276 | } |
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277 | |
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278 | rpos = (rpos + frameCount) % hw->samples; |
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279 | core->decr += frameCount; |
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280 | core->rpos = rpos; |
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281 | |
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282 | coreaudio_unlock (core, "audioDeviceIOProc"); |
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283 | return 0; |
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284 | } |
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285 | |
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286 | static int coreaudio_write (SWVoiceOut *sw, void *buf, int len) |
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287 | { |
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288 | return audio_pcm_sw_write (sw, buf, len); |
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289 | } |
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290 | |
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291 | static int coreaudio_init_out (HWVoiceOut *hw, audsettings_t *as) |
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292 | { |
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293 | OSStatus status; |
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294 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
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295 | UInt32 propertySize; |
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296 | int err; |
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297 | int bits = 8; |
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298 | const char *typ = "playback"; |
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299 | AudioValueRange frameRange; |
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300 | |
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301 | /* create mutex */ |
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302 | err = pthread_mutex_init(&core->mutex, NULL); |
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303 | if (err) { |
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304 | dolog("Could not create mutex\nReason: %s\n", strerror (err)); |
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305 | return -1; |
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306 | } |
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307 | |
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308 | if (as->fmt == AUD_FMT_S16 || as->fmt == AUD_FMT_U16) { |
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309 | bits = 16; |
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310 | } |
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311 | |
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312 | audio_pcm_init_info (&hw->info, as); |
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313 | |
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314 | /* open default output device */ |
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315 | propertySize = sizeof(core->outputDeviceID); |
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316 | status = AudioHardwareGetProperty( |
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317 | kAudioHardwarePropertyDefaultOutputDevice, |
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318 | &propertySize, |
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319 | &core->outputDeviceID); |
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320 | if (status != kAudioHardwareNoError) { |
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321 | coreaudio_logerr2 (status, typ, |
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322 | "Could not get default output Device\n"); |
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323 | return -1; |
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324 | } |
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325 | if (core->outputDeviceID == kAudioDeviceUnknown) { |
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326 | dolog ("Could not initialize %s - Unknown Audiodevice\n", typ); |
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327 | return -1; |
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328 | } |
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329 | |
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330 | /* get minimum and maximum buffer frame sizes */ |
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331 | propertySize = sizeof(frameRange); |
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332 | status = AudioDeviceGetProperty( |
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333 | core->outputDeviceID, |
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334 | 0, |
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335 | 0, |
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336 | kAudioDevicePropertyBufferFrameSizeRange, |
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337 | &propertySize, |
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338 | &frameRange); |
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339 | if (status != kAudioHardwareNoError) { |
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340 | coreaudio_logerr2 (status, typ, |
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341 | "Could not get device buffer frame range\n"); |
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342 | return -1; |
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343 | } |
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344 | |
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345 | if (frameRange.mMinimum > conf.buffer_frames) { |
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346 | core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum; |
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347 | dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum); |
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348 | } |
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349 | else if (frameRange.mMaximum < conf.buffer_frames) { |
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350 | core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum; |
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351 | dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum); |
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352 | } |
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353 | else { |
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354 | core->audioDevicePropertyBufferFrameSize = conf.buffer_frames; |
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355 | } |
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356 | |
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357 | /* set Buffer Frame Size */ |
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358 | propertySize = sizeof(core->audioDevicePropertyBufferFrameSize); |
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359 | status = AudioDeviceSetProperty( |
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360 | core->outputDeviceID, |
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361 | NULL, |
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362 | 0, |
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363 | false, |
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364 | kAudioDevicePropertyBufferFrameSize, |
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365 | propertySize, |
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366 | &core->audioDevicePropertyBufferFrameSize); |
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367 | if (status != kAudioHardwareNoError) { |
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368 | coreaudio_logerr2 (status, typ, |
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369 | "Could not set device buffer frame size %ld\n", |
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370 | core->audioDevicePropertyBufferFrameSize); |
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371 | return -1; |
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372 | } |
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373 | |
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374 | /* get Buffer Frame Size */ |
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375 | propertySize = sizeof(core->audioDevicePropertyBufferFrameSize); |
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376 | status = AudioDeviceGetProperty( |
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377 | core->outputDeviceID, |
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378 | 0, |
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379 | false, |
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380 | kAudioDevicePropertyBufferFrameSize, |
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381 | &propertySize, |
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382 | &core->audioDevicePropertyBufferFrameSize); |
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383 | if (status != kAudioHardwareNoError) { |
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384 | coreaudio_logerr2 (status, typ, |
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385 | "Could not get device buffer frame size\n"); |
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386 | return -1; |
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387 | } |
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388 | hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize; |
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389 | |
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390 | /* get StreamFormat */ |
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391 | propertySize = sizeof(core->outputStreamBasicDescription); |
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392 | status = AudioDeviceGetProperty( |
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393 | core->outputDeviceID, |
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394 | 0, |
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395 | false, |
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396 | kAudioDevicePropertyStreamFormat, |
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397 | &propertySize, |
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398 | &core->outputStreamBasicDescription); |
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399 | if (status != kAudioHardwareNoError) { |
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400 | coreaudio_logerr2 (status, typ, |
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401 | "Could not get Device Stream properties\n"); |
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402 | core->outputDeviceID = kAudioDeviceUnknown; |
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403 | return -1; |
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404 | } |
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405 | |
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406 | /* set Samplerate */ |
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407 | core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq; |
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408 | propertySize = sizeof(core->outputStreamBasicDescription); |
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409 | status = AudioDeviceSetProperty( |
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410 | core->outputDeviceID, |
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411 | 0, |
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412 | 0, |
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413 | 0, |
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414 | kAudioDevicePropertyStreamFormat, |
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415 | propertySize, |
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416 | &core->outputStreamBasicDescription); |
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417 | if (status != kAudioHardwareNoError) { |
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418 | coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n", |
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419 | as->freq); |
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420 | core->outputDeviceID = kAudioDeviceUnknown; |
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421 | return -1; |
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422 | } |
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423 | |
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424 | /* set Callback */ |
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425 | status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw); |
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426 | if (status != kAudioHardwareNoError) { |
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427 | coreaudio_logerr2 (status, typ, "Could not set IOProc\n"); |
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428 | core->outputDeviceID = kAudioDeviceUnknown; |
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429 | return -1; |
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430 | } |
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431 | |
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432 | /* start Playback */ |
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433 | if (!isPlaying(core->outputDeviceID)) { |
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434 | status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); |
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435 | if (status != kAudioHardwareNoError) { |
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436 | coreaudio_logerr2 (status, typ, "Could not start playback\n"); |
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437 | AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc); |
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438 | core->outputDeviceID = kAudioDeviceUnknown; |
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439 | return -1; |
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440 | } |
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441 | } |
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442 | |
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443 | return 0; |
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444 | } |
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445 | |
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446 | static void coreaudio_fini_out (HWVoiceOut *hw) |
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447 | { |
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448 | OSStatus status; |
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449 | int err; |
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450 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
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451 | |
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452 | if (!conf.isAtexit) { |
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453 | /* stop playback */ |
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454 | if (isPlaying(core->outputDeviceID)) { |
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455 | status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); |
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456 | if (status != kAudioHardwareNoError) { |
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457 | coreaudio_logerr (status, "Could not stop playback\n"); |
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458 | } |
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459 | } |
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460 | |
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461 | /* remove callback */ |
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462 | status = AudioDeviceRemoveIOProc(core->outputDeviceID, |
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463 | audioDeviceIOProc); |
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464 | if (status != kAudioHardwareNoError) { |
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465 | coreaudio_logerr (status, "Could not remove IOProc\n"); |
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466 | } |
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467 | } |
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468 | core->outputDeviceID = kAudioDeviceUnknown; |
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469 | |
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470 | /* destroy mutex */ |
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471 | err = pthread_mutex_destroy(&core->mutex); |
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472 | if (err) { |
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473 | dolog("Could not destroy mutex\nReason: %s\n", strerror (err)); |
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474 | } |
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475 | } |
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476 | |
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477 | static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...) |
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478 | { |
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479 | OSStatus status; |
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480 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; |
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481 | |
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482 | switch (cmd) { |
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483 | case VOICE_ENABLE: |
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484 | /* start playback */ |
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485 | if (!isPlaying(core->outputDeviceID)) { |
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486 | status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); |
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487 | if (status != kAudioHardwareNoError) { |
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488 | coreaudio_logerr (status, "Could not resume playback\n"); |
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489 | } |
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490 | } |
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491 | break; |
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492 | |
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493 | case VOICE_DISABLE: |
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494 | /* stop playback */ |
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495 | if (!conf.isAtexit) { |
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496 | if (isPlaying(core->outputDeviceID)) { |
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497 | status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); |
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498 | if (status != kAudioHardwareNoError) { |
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499 | coreaudio_logerr (status, "Could not pause playback\n"); |
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500 | } |
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501 | } |
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502 | } |
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503 | break; |
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504 | } |
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505 | return 0; |
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506 | } |
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507 | |
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508 | static void *coreaudio_audio_init (void) |
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509 | { |
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510 | atexit(coreaudio_atexit); |
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511 | return &coreaudio_audio_init; |
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512 | } |
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513 | |
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514 | static void coreaudio_audio_fini (void *opaque) |
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515 | { |
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516 | (void) opaque; |
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517 | } |
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518 | |
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519 | static struct audio_option coreaudio_options[] = { |
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520 | {"BUFFER_SIZE", AUD_OPT_INT, &conf.buffer_frames, |
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521 | "Size of the buffer in frames", NULL, 0}, |
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522 | {"BUFFER_COUNT", AUD_OPT_INT, &conf.nbuffers, |
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523 | "Number of buffers", NULL, 0}, |
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524 | {NULL, 0, NULL, NULL, NULL, 0} |
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525 | }; |
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526 | |
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527 | static struct audio_pcm_ops coreaudio_pcm_ops = { |
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528 | coreaudio_init_out, |
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529 | coreaudio_fini_out, |
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530 | coreaudio_run_out, |
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531 | coreaudio_write, |
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532 | coreaudio_ctl_out, |
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533 | |
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534 | NULL, |
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535 | NULL, |
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536 | NULL, |
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537 | NULL, |
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538 | NULL |
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539 | }; |
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540 | |
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541 | struct audio_driver coreaudio_audio_driver = { |
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542 | INIT_FIELD (name = ) "coreaudio", |
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543 | INIT_FIELD (descr = ) |
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544 | "CoreAudio http://developer.apple.com/audio/coreaudio.html", |
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545 | INIT_FIELD (options = ) coreaudio_options, |
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546 | INIT_FIELD (init = ) coreaudio_audio_init, |
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547 | INIT_FIELD (fini = ) coreaudio_audio_fini, |
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548 | INIT_FIELD (pcm_ops = ) &coreaudio_pcm_ops, |
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549 | INIT_FIELD (can_be_default = ) 1, |
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550 | INIT_FIELD (max_voices_out = ) 1, |
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551 | INIT_FIELD (max_voices_in = ) 0, |
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552 | INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut), |
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553 | INIT_FIELD (voice_size_in = ) 0 |
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554 | }; |
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