1 | /***************************************************************************** |
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2 | * = NAME |
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3 | * audiooutputca.cpp |
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4 | * |
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5 | * = DESCRIPTION |
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6 | * Core Audio glue for Mac OS X. |
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7 | * This plays MythTV audio through the default output device on OS X. |
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8 | * |
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9 | * = REVISION |
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10 | * $Id: audiooutputca.cpp 10219 2006-06-16 12:58:38Z danielk $ |
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11 | * |
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12 | * = AUTHORS |
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13 | * Jeremiah Morris |
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14 | *****************************************************************************/ |
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15 | |
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16 | #include <CoreServices/CoreServices.h> |
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17 | #include <CoreAudio/CoreAudio.h> |
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18 | #include <AudioUnit/AudioUnit.h> |
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19 | |
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20 | using namespace std; |
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21 | |
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22 | #include "mythcontext.h" |
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23 | #include "audiooutputca.h" |
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24 | #include "config.h" |
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25 | |
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26 | // this holds Core Audio member variables |
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27 | class CoreAudio_impl { |
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28 | public: |
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29 | CoreAudio_impl(AudioOutputCA *inSelf); |
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30 | |
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31 | // Volume control |
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32 | int GetVolumeChannel(int channel); // Returns 0-100 |
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33 | void SetVolumeChannel(int channel, int volume); // range 0-100 for vol |
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34 | |
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35 | // You need to implement the following functions |
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36 | bool OpenDevice(void); |
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37 | bool OpenAnalogDevice(void); |
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38 | bool OpenSPDIFDevice(void); |
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39 | void CloseDevice(void); |
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40 | void CloseSPDIF(void); |
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41 | |
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42 | int getBufferedOnSoundcard(void); |
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43 | |
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44 | void Error(QString msg) |
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45 | { |
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46 | VERBOSE(VB_IMPORTANT, "AudioOutput Error: " + msg); |
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47 | } |
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48 | |
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49 | void Warn(QString msg) |
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50 | { |
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51 | VERBOSE(VB_IMPORTANT, "AudioOutput Warning: " + msg); |
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52 | } |
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53 | |
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54 | void ReleaseHogMode(); |
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55 | bool FindAC3Stream(); |
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56 | |
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57 | AudioUnit mOutputUnit; |
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58 | |
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59 | AudioDeviceID mSelectedDevice; /* Keeps DeviceID of the selected device */ |
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60 | |
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61 | /* CoreAudio SPDIF mode specific */ |
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62 | bool mDigitalInUse; /* Digital (SPDIF) output in use */ |
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63 | pid_t mHogModePID; /* The keep the pid of our hog status */ |
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64 | AudioStreamID mStreamID; /* The StreamID that has a cac3 streamformat */ |
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65 | int mStreamIndex; /* The index of mStreamID in an AudioBufferList */ |
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66 | AudioStreamBasicDescription mStreamFormat; /* The format we changed the stream to */ |
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67 | AudioStreamBasicDescription mStreamFmtRevert; /* The original format of the stream */ |
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68 | bool mRevert; /* Wether we need to revert the stream format */ |
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69 | bool mChangedMixing;/* Wether we need to set the mixing mode back */ |
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70 | |
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71 | int mBufferedBytes; /* Data buffered on the soundcard */ |
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72 | |
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73 | AudioOutputCA *mSelf; |
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74 | |
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75 | // callback for delivering audio to output device |
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76 | bool RenderAudio(unsigned char *aubuf, int size, |
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77 | unsigned long long timestamp); |
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78 | |
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79 | int AudioStreamChangeFormat( AudioStreamID mStreamID, AudioStreamBasicDescription change_format ); |
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80 | }; |
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81 | |
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82 | // This callback communicates with Core Audio. |
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83 | static OSStatus RenderCallbackAnalog(void *inRefCon, |
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84 | AudioUnitRenderActionFlags *ioActionFlags, |
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85 | const AudioTimeStamp *inTimeStamp, |
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86 | UInt32 inBusNumber, |
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87 | UInt32 inNumberFrames, |
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88 | AudioBufferList *ioData); |
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89 | |
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90 | static OSStatus RenderCallbackSPDIF( AudioDeviceID inDevice, |
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91 | const AudioTimeStamp * inNow, |
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92 | const void * inInputData, |
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93 | const AudioTimeStamp * inInputTime, |
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94 | AudioBufferList * outOutputData, |
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95 | const AudioTimeStamp * inOutputTime, |
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96 | void * threadGlobals ); |
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97 | |
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98 | AudioOutputCA::AudioOutputCA( |
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99 | QString laudio_main_device, QString laudio_passthru_device, |
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100 | int laudio_bits, int laudio_channels, |
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101 | int laudio_samplerate, AudioOutputSource lsource, |
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102 | bool lset_initial_vol, bool laudio_passthru) |
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103 | : AudioOutputBase(laudio_main_device, laudio_passthru_device, |
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104 | laudio_bits, laudio_channels, |
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105 | laudio_samplerate, lsource, |
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106 | lset_initial_vol, laudio_passthru), |
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107 | mPImpl(new CoreAudio_impl(this)) |
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108 | { |
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109 | if (laudio_passthru && !mPImpl->FindAC3Stream()) |
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110 | { |
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111 | VERBOSE(VB_AUDIO, "AudioOutputCA::AudioOutputCA - Configured for AC3 passthru but could not find an AC3 output stream"); |
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112 | Reconfigure(laudio_bits, laudio_channels, |
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113 | laudio_samplerate, false); |
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114 | } |
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115 | else |
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116 | { |
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117 | Reconfigure(laudio_bits, laudio_channels, |
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118 | laudio_samplerate, laudio_passthru); |
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119 | } |
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120 | } |
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121 | |
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122 | AudioOutputCA::~AudioOutputCA() |
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123 | { |
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124 | KillAudio(); |
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125 | |
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126 | delete mPImpl; |
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127 | } |
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128 | |
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129 | bool AudioOutputCA::OpenDevice() |
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130 | { |
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131 | bool deviceOpened = mPImpl->OpenDevice(); |
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132 | |
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133 | if (deviceOpened && internal_vol && set_initial_vol) |
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134 | { |
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135 | QString controlLabel = gContext->GetSetting("MixerControl", "PCM"); |
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136 | controlLabel += "MixerVolume"; |
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137 | SetCurrentVolume(gContext->GetNumSetting(controlLabel, 80)); |
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138 | } |
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139 | |
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140 | return deviceOpened; |
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141 | } |
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142 | |
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143 | void AudioOutputCA::CloseDevice() |
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144 | { |
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145 | mPImpl->CloseDevice(); |
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146 | } |
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147 | |
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148 | |
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149 | /* Object-oriented part of callback */ |
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150 | bool CoreAudio_impl::RenderAudio(unsigned char *aubuf, |
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151 | int size, |
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152 | unsigned long long timestamp) |
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153 | { |
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154 | if (mSelf->pauseaudio || mSelf->killaudio) |
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155 | { |
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156 | mSelf->audio_actually_paused = true; |
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157 | return false; |
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158 | } |
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159 | |
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160 | /* This callback is called when the sound system requests |
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161 | data. We don't want to block here, because that would |
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162 | just cause dropouts anyway, so we always return whatever |
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163 | data is available. If we haven't received enough, either |
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164 | because we've finished playing or we have a buffer |
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165 | underrun, we play silence to fill the unused space. */ |
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166 | |
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167 | int written_size = mSelf->GetAudioData(aubuf, size, false); |
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168 | if (written_size && (size > written_size)) |
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169 | { |
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170 | // play silence on buffer underrun |
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171 | bzero(aubuf + written_size, size - written_size); |
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172 | } |
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173 | |
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174 | /* update audiotime (bufferedBytes is read by getBufferedOnSoundcard) */ |
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175 | UInt64 nanos = AudioConvertHostTimeToNanos( |
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176 | timestamp - AudioGetCurrentHostTime()); |
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177 | mBufferedBytes = (int)((nanos / 1000000000.0) * // secs |
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178 | (mSelf->effdsp / 100.0) * // samples/sec |
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179 | mSelf->audio_bytes_per_sample); // bytes/sample |
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180 | mSelf->SetAudiotime(); |
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181 | |
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182 | return (written_size > 0); |
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183 | } |
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184 | |
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185 | void AudioOutputCA::WriteAudio(unsigned char *aubuf, int size) |
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186 | { |
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187 | (void)aubuf; |
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188 | (void)size; |
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189 | return; // unneeded and unused in CA |
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190 | } |
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191 | |
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192 | int AudioOutputCA::getSpaceOnSoundcard(void) |
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193 | { |
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194 | return 0; // unneeded and unused in CA |
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195 | } |
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196 | |
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197 | int AudioOutputCA::getBufferedOnSoundcard(void) |
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198 | { |
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199 | return mPImpl->getBufferedOnSoundcard(); |
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200 | } |
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201 | |
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202 | void AudioOutputCA::StartOutputThread(void) |
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203 | { |
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204 | return; // no thread for CA |
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205 | } |
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206 | |
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207 | void AudioOutputCA::StopOutputThread(void) |
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208 | { |
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209 | return; // no thread for CA |
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210 | } |
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211 | |
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212 | int AudioOutputCA::GetVolumeChannel(int channel) |
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213 | { |
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214 | return mPImpl->GetVolumeChannel(channel); |
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215 | } |
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216 | |
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217 | void AudioOutputCA::SetVolumeChannel(int channel, int volume) |
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218 | { |
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219 | mPImpl->SetVolumeChannel(channel, volume); |
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220 | } |
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221 | |
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222 | /* This callback provides converted audio data to the default output device. */ |
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223 | OSStatus RenderCallbackAnalog(void *inRefCon, |
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224 | AudioUnitRenderActionFlags *ioActionFlags, |
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225 | const AudioTimeStamp *inTimeStamp, |
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226 | UInt32 inBusNumber, |
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227 | UInt32 inNumberFrames, |
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228 | AudioBufferList *ioData) |
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229 | { |
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230 | (void)inBusNumber; |
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231 | (void)inNumberFrames; |
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232 | |
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233 | CoreAudio_impl *inst = (CoreAudio_impl *)inRefCon; |
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234 | |
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235 | if (!inst->RenderAudio((unsigned char *)(ioData->mBuffers[0].mData), |
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236 | ioData->mBuffers[0].mDataByteSize, |
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237 | inTimeStamp->mHostTime)) |
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238 | { |
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239 | // play silence if RenderAudio returns false |
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240 | bzero(ioData->mBuffers[0].mData, ioData->mBuffers[0].mDataByteSize); |
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241 | *ioActionFlags = kAudioUnitRenderAction_OutputIsSilence; |
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242 | } |
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243 | return noErr; |
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244 | } |
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245 | |
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246 | |
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247 | /***************************************************************************** |
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248 | * RenderCallbackSPDIF: callback for SPDIF audio output |
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249 | *****************************************************************************/ |
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250 | static OSStatus RenderCallbackSPDIF( AudioDeviceID inDevice, |
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251 | const AudioTimeStamp * inNow, |
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252 | const void * inInputData, |
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253 | const AudioTimeStamp * inInputTime, |
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254 | AudioBufferList * outOutputData, |
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255 | const AudioTimeStamp * inOutputTime, |
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256 | void * inRefCon ) |
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257 | { |
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258 | (void)inDevice; // unused |
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259 | (void)inNow; // unused |
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260 | (void)inInputData; // unused |
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261 | (void)inInputTime; // unused |
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262 | |
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263 | CoreAudio_impl *inst = (CoreAudio_impl *)inRefCon; |
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264 | |
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265 | if (!inst->RenderAudio((unsigned char *)(outOutputData->mBuffers[inst->mStreamIndex].mData), |
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266 | outOutputData->mBuffers[inst->mStreamIndex].mDataByteSize, |
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267 | inOutputTime->mHostTime)) |
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268 | { |
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269 | // play silence if RenderAudio returns false |
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270 | bzero(outOutputData->mBuffers[inst->mStreamIndex].mData, outOutputData->mBuffers[inst->mStreamIndex].mDataByteSize); |
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271 | } |
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272 | return noErr; |
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273 | } |
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274 | |
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275 | |
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276 | CoreAudio_impl::CoreAudio_impl(AudioOutputCA *inSelf) : mSelf(inSelf) |
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277 | { |
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278 | UInt32 i_param_size; |
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279 | AudioDeviceID devid_def = -1; |
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280 | OSStatus err; |
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281 | |
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282 | // Create private data |
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283 | mOutputUnit = NULL; |
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284 | mSelectedDevice = 0; |
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285 | mDigitalInUse = false; |
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286 | |
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287 | /* Find the ID of the default Device */ |
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288 | i_param_size = sizeof( AudioDeviceID ); |
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289 | err = AudioHardwareGetProperty( kAudioHardwarePropertyDefaultOutputDevice, |
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290 | &i_param_size, &devid_def ); |
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291 | if( err != noErr ) |
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292 | { |
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293 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl:CoreAudio_impl - could not get default audio device: %1").arg(err, 0, 16)); |
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294 | } |
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295 | mSelectedDevice = devid_def; |
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296 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::CoreAudio_impl - default device ID = %1").arg(mSelectedDevice, 0, 16)); |
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297 | } |
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298 | |
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299 | bool CoreAudio_impl::OpenDevice() |
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300 | { |
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301 | OSStatus err = noErr; |
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302 | UInt32 i_param_size = 0; |
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303 | |
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304 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::OpenDevice - Device ID = %1").arg(mSelectedDevice, 0, 16)); |
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305 | mStreamIndex = -1; |
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306 | |
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307 | i_param_size = sizeof( mHogModePID ); |
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308 | err = AudioDeviceGetProperty( mSelectedDevice, 0, FALSE, |
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309 | kAudioDevicePropertyHogMode, |
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310 | &i_param_size, &mHogModePID ); |
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311 | |
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312 | if( err != noErr ) |
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313 | { |
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314 | /* This is not a fatal error. Some drivers simply don't support this property */ |
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315 | VERBOSE( VB_AUDIO, QString("CoreAudio_impl::OpenDevice - could not check whether device is hogged: %1").arg(err, 0,16)); |
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316 | mHogModePID = -1; |
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317 | } |
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318 | |
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319 | if( mHogModePID != -1 && mHogModePID != getpid() ) |
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320 | { |
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321 | VERBOSE(VB_IMPORTANT, QString("Selected audio device is exclusively in use by another program - pid = %1").arg(mHogModePID)); |
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322 | return false; |
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323 | } |
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324 | |
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325 | bool deviceOpened = false; |
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326 | if (mSelf->audio_passthru) |
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327 | { |
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328 | deviceOpened = OpenSPDIFDevice(); |
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329 | } |
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330 | |
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331 | // If we failed to open the SPDIF device then try openning the analog device instead. |
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332 | if (!deviceOpened) |
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333 | { |
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334 | deviceOpened = OpenAnalogDevice(); |
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335 | } |
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336 | |
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337 | return deviceOpened; |
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338 | } |
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339 | |
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340 | bool CoreAudio_impl::OpenAnalogDevice() |
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341 | { |
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342 | // Get default output device |
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343 | ComponentDescription desc; |
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344 | desc.componentType = kAudioUnitType_Output; |
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345 | desc.componentSubType = kAudioUnitSubType_DefaultOutput; |
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346 | desc.componentManufacturer = kAudioUnitManufacturer_Apple; |
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347 | desc.componentFlags = 0; |
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348 | desc.componentFlagsMask = 0; |
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349 | |
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350 | Component comp = FindNextComponent(NULL, &desc); |
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351 | if (comp == NULL) |
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352 | { |
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353 | Error(QString("FindNextComponent failed")); |
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354 | return false; |
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355 | } |
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356 | |
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357 | OSStatus err = OpenAComponent(comp, &mOutputUnit); |
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358 | if (err) |
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359 | { |
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360 | Error(QString("OpenAComponent returned %1").arg((long)err)); |
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361 | return false; |
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362 | } |
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363 | |
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364 | // Attach callback to default output |
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365 | AURenderCallbackStruct input; |
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366 | input.inputProc = RenderCallbackAnalog; |
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367 | input.inputProcRefCon = this; |
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368 | |
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369 | err = AudioUnitSetProperty(mOutputUnit, |
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370 | kAudioUnitProperty_SetRenderCallback, |
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371 | kAudioUnitScope_Input, |
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372 | 0, |
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373 | &input, |
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374 | sizeof(input)); |
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375 | if (err) |
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376 | { |
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377 | Error(QString("AudioUnitSetProperty (callback) returned %1") |
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378 | .arg((long)err)); |
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379 | return false; |
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380 | } |
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381 | |
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382 | // base class does this after OpenDevice, but we need it now |
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383 | mSelf->audio_bytes_per_sample = mSelf->audio_channels * mSelf->audio_bits / 8; |
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384 | |
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385 | // Set up the audio output unit |
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386 | AudioStreamBasicDescription conv_in_desc; |
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387 | bzero(&conv_in_desc, sizeof(AudioStreamBasicDescription)); |
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388 | conv_in_desc.mSampleRate = mSelf->audio_samplerate; |
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389 | conv_in_desc.mFormatID = kAudioFormatLinearPCM; |
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390 | conv_in_desc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger; |
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391 | #ifdef WORDS_BIGENDIAN |
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392 | conv_in_desc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian; |
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393 | #endif |
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394 | conv_in_desc.mBytesPerPacket = mSelf->audio_bytes_per_sample; |
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395 | conv_in_desc.mFramesPerPacket = 1; |
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396 | conv_in_desc.mBytesPerFrame = mSelf->audio_bytes_per_sample; |
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397 | conv_in_desc.mChannelsPerFrame = mSelf->audio_channels; |
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398 | conv_in_desc.mBitsPerChannel = mSelf->audio_bits; |
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399 | |
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400 | err = AudioUnitSetProperty(mOutputUnit, |
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401 | kAudioUnitProperty_StreamFormat, |
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402 | kAudioUnitScope_Input, |
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403 | 0, |
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404 | &conv_in_desc, |
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405 | sizeof(AudioStreamBasicDescription)); |
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406 | if (err) |
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407 | { |
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408 | Error(QString("AudioUnitSetProperty returned %1").arg((long)err)); |
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409 | return false; |
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410 | } |
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411 | |
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412 | // We're all set up - start the audio output unit |
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413 | ComponentResult res = AudioUnitInitialize(mOutputUnit); |
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414 | if (res) |
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415 | { |
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416 | Error(QString("AudioUnitInitialize returned %1").arg((long)res)); |
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417 | return false; |
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418 | } |
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419 | |
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420 | err = AudioOutputUnitStart(mOutputUnit); |
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421 | if (err) |
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422 | { |
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423 | Error(QString("AudioOutputUnitStart returned %1").arg((long)err)); |
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424 | return false; |
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425 | } |
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426 | return true; |
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427 | } |
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428 | |
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429 | bool CoreAudio_impl::OpenSPDIFDevice() |
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430 | { |
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431 | OSStatus err = noErr; |
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432 | UInt32 i_param_size = 0, b_mix = 0; |
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433 | Boolean b_writeable = false; |
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434 | AudioStreamID *p_streams = NULL; |
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435 | int i = 0, i_streams = 0; |
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436 | |
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437 | /* Start doing the SPDIF setup proces */ |
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438 | |
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439 | /* Hog the device */ |
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440 | i_param_size = sizeof( mHogModePID ); |
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441 | mHogModePID = getpid() ; |
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442 | |
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443 | err = AudioDeviceSetProperty( mSelectedDevice, 0, 0, FALSE, |
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444 | kAudioDevicePropertyHogMode, i_param_size, &mHogModePID ); |
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445 | |
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446 | if( err != noErr ) |
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447 | { |
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448 | VERBOSE( VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - failed to set hogmode: %1").arg(err, 0, 16)); |
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449 | return false; |
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450 | } |
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451 | |
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452 | /* Set mixable to false if we are allowed to */ |
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453 | err = AudioDeviceGetPropertyInfo( mSelectedDevice, 0, FALSE, kAudioDevicePropertySupportsMixing, |
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454 | &i_param_size, &b_writeable ); |
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455 | |
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456 | err = AudioDeviceGetProperty( mSelectedDevice, 0, FALSE, kAudioDevicePropertySupportsMixing, |
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457 | &i_param_size, &b_mix ); |
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458 | |
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459 | if( !err && b_writeable ) |
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460 | { |
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461 | b_mix = 0; |
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462 | err = AudioDeviceSetProperty( mSelectedDevice, 0, 0, FALSE, |
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463 | kAudioDevicePropertySupportsMixing, i_param_size, &b_mix ); |
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464 | mChangedMixing = true; |
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465 | } |
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466 | |
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467 | if( err != noErr ) |
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468 | { |
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469 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - failed to set mixmode: %1").arg(err)); |
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470 | ReleaseHogMode(); |
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471 | return false; |
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472 | } |
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473 | |
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474 | /* Get a list of all the streams on this device */ |
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475 | err = AudioDeviceGetPropertyInfo( mSelectedDevice, 0, FALSE, |
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476 | kAudioDevicePropertyStreams, |
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477 | &i_param_size, NULL ); |
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478 | if( err != noErr ) |
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479 | { |
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480 | VERBOSE( VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - could not get number of streams: %1").arg(err)); |
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481 | ReleaseHogMode(); |
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482 | return false; |
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483 | } |
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484 | |
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485 | i_streams = i_param_size / sizeof( AudioStreamID ); |
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486 | p_streams = (AudioStreamID *)malloc( i_param_size ); |
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487 | if( p_streams == NULL ) |
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488 | { |
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489 | VERBOSE(VB_IMPORTANT, "CoreAudio_impl::OpenSPDIF - out of memory" ); |
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490 | ReleaseHogMode(); |
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491 | return false; |
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492 | } |
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493 | |
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494 | err = AudioDeviceGetProperty( mSelectedDevice, 0, FALSE, |
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495 | kAudioDevicePropertyStreams, |
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496 | &i_param_size, p_streams ); |
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497 | |
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498 | if( err != noErr ) |
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499 | { |
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500 | VERBOSE( VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - could not get number of streams: %1").arg(err)); |
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501 | if( p_streams ) free( p_streams ); |
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502 | ReleaseHogMode(); |
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503 | return false; |
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504 | } |
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505 | |
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506 | for( i = 0; i < i_streams && mStreamIndex < 0 ; i++ ) |
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507 | { |
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508 | /* Find a stream with a cac3 stream */ |
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509 | AudioStreamBasicDescription *p_format_list = NULL; |
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510 | int i_formats = 0, j = 0; |
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511 | |
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512 | /* Retrieve all the stream formats supported by each output stream */ |
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513 | err = AudioStreamGetPropertyInfo( p_streams[i], 0, |
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514 | kAudioStreamPropertyPhysicalFormats, |
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515 | &i_param_size, NULL ); |
---|
516 | if( err != noErr ) |
---|
517 | { |
---|
518 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - could not get number of streamformats: %1").arg(err)); |
---|
519 | continue; |
---|
520 | } |
---|
521 | |
---|
522 | i_formats = i_param_size / sizeof( AudioStreamBasicDescription ); |
---|
523 | p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size ); |
---|
524 | if( p_format_list == NULL ) |
---|
525 | { |
---|
526 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - could not malloc the memory" )); |
---|
527 | continue; |
---|
528 | } |
---|
529 | |
---|
530 | err = AudioStreamGetProperty( p_streams[i], 0, |
---|
531 | kAudioStreamPropertyPhysicalFormats, |
---|
532 | &i_param_size, p_format_list ); |
---|
533 | if( err != noErr ) |
---|
534 | { |
---|
535 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - could not get the list of streamformats: %1").arg(err)); |
---|
536 | if( p_format_list) free( p_format_list); |
---|
537 | continue; |
---|
538 | } |
---|
539 | |
---|
540 | /* Check if one of the supported formats is a digital format */ |
---|
541 | for( j = 0; j < i_formats; j++ ) |
---|
542 | { |
---|
543 | if( p_format_list[j].mFormatID == 'IAC3' || |
---|
544 | p_format_list[j].mFormatID == kAudioFormat60958AC3 ) |
---|
545 | { |
---|
546 | VERBOSE(VB_AUDIO, "CoreAudio_impl::OpenSPDIF - found digital format"); |
---|
547 | mDigitalInUse = true; |
---|
548 | break; |
---|
549 | } |
---|
550 | } |
---|
551 | |
---|
552 | if (!mDigitalInUse) |
---|
553 | { |
---|
554 | ReleaseHogMode(); |
---|
555 | return false; // No AC3 format streams - try and fallback to analog |
---|
556 | } |
---|
557 | |
---|
558 | if( mDigitalInUse ) |
---|
559 | { |
---|
560 | /* if this stream supports a digital (cac3) format, then go set it. */ |
---|
561 | int i_requested_rate_format = -1; |
---|
562 | int i_current_rate_format = -1; |
---|
563 | int i_backup_rate_format = -1; |
---|
564 | |
---|
565 | mStreamID = p_streams[i]; |
---|
566 | mStreamIndex = i; |
---|
567 | |
---|
568 | if( mRevert == false ) |
---|
569 | { |
---|
570 | /* Retrieve the original format of this stream first if not done so already */ |
---|
571 | i_param_size = sizeof( mStreamFmtRevert ); |
---|
572 | err = AudioStreamGetProperty( mStreamID, 0, |
---|
573 | kAudioStreamPropertyPhysicalFormat, |
---|
574 | &i_param_size, |
---|
575 | &mStreamFmtRevert ); |
---|
576 | if( err != noErr ) |
---|
577 | { |
---|
578 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - could not retrieve the original streamformat: %1").arg(err)); |
---|
579 | continue; |
---|
580 | } |
---|
581 | mRevert = true; |
---|
582 | } |
---|
583 | |
---|
584 | for( j = 0; j < i_formats; j++ ) |
---|
585 | { |
---|
586 | if( p_format_list[j].mFormatID == 'IAC3' || |
---|
587 | p_format_list[j].mFormatID == kAudioFormat60958AC3 ) |
---|
588 | { |
---|
589 | if( p_format_list[j].mSampleRate == mSelf->audio_samplerate ) |
---|
590 | { |
---|
591 | i_requested_rate_format = j; |
---|
592 | break; |
---|
593 | } |
---|
594 | else if( p_format_list[j].mSampleRate == mStreamFmtRevert.mSampleRate ) |
---|
595 | { |
---|
596 | i_current_rate_format = j; |
---|
597 | } |
---|
598 | else |
---|
599 | { |
---|
600 | if( i_backup_rate_format < 0 || p_format_list[j].mSampleRate > p_format_list[i_backup_rate_format].mSampleRate ) |
---|
601 | i_backup_rate_format = j; |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | } |
---|
606 | |
---|
607 | if( i_requested_rate_format >= 0 ) /* We prefer to output at the samplerate of the original audio */ |
---|
608 | mStreamFormat = p_format_list[i_requested_rate_format]; |
---|
609 | else if( i_current_rate_format >= 0 ) /* If not possible, we will try to use the current samplerate of the device */ |
---|
610 | mStreamFormat = p_format_list[i_current_rate_format]; |
---|
611 | else mStreamFormat = p_format_list[i_backup_rate_format]; /* And if we have to, any digital format will be just fine (highest rate possible) */ |
---|
612 | } |
---|
613 | if( p_format_list ) free( p_format_list ); |
---|
614 | } |
---|
615 | if( p_streams ) free( p_streams ); |
---|
616 | |
---|
617 | if( !AudioStreamChangeFormat( mStreamID, mStreamFormat ) ) |
---|
618 | { |
---|
619 | ReleaseHogMode(); |
---|
620 | return false; |
---|
621 | } |
---|
622 | |
---|
623 | /* Add IOProc callback */ |
---|
624 | err = AudioDeviceAddIOProc( mSelectedDevice, |
---|
625 | (AudioDeviceIOProc)RenderCallbackSPDIF, |
---|
626 | (void *)this ); |
---|
627 | if( err != noErr ) |
---|
628 | { |
---|
629 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - AudioDeviceAddIOProc failed: %1").arg(err)); |
---|
630 | ReleaseHogMode(); |
---|
631 | return false; |
---|
632 | } |
---|
633 | |
---|
634 | /* Start device */ |
---|
635 | err = AudioDeviceStart( mSelectedDevice, (AudioDeviceIOProc)RenderCallbackSPDIF ); |
---|
636 | if( err != noErr ) |
---|
637 | { |
---|
638 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - AudioDeviceStart failed: %1").arg(err)); |
---|
639 | |
---|
640 | err = AudioDeviceRemoveIOProc( mSelectedDevice, |
---|
641 | (AudioDeviceIOProc)RenderCallbackSPDIF ); |
---|
642 | if( err != noErr ) |
---|
643 | { |
---|
644 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::OpenSPDIF - AudioDeviceRemoveIOProc failed: %1").arg(err)); |
---|
645 | } |
---|
646 | ReleaseHogMode(); |
---|
647 | return false; |
---|
648 | } |
---|
649 | |
---|
650 | return true; |
---|
651 | } |
---|
652 | |
---|
653 | void CoreAudio_impl::CloseDevice() |
---|
654 | { |
---|
655 | if (mOutputUnit) |
---|
656 | { |
---|
657 | AudioOutputUnitStop(mOutputUnit); |
---|
658 | AudioUnitUninitialize(mOutputUnit); |
---|
659 | AudioUnitReset(mOutputUnit, |
---|
660 | kAudioUnitScope_Input, NULL); |
---|
661 | CloseComponent(mOutputUnit); |
---|
662 | mOutputUnit = NULL; |
---|
663 | } |
---|
664 | |
---|
665 | if (mDigitalInUse) |
---|
666 | { |
---|
667 | // Close SPDIF |
---|
668 | CloseSPDIF(); |
---|
669 | } |
---|
670 | if (mHogModePID == getpid()) |
---|
671 | { |
---|
672 | ReleaseHogMode(); |
---|
673 | } |
---|
674 | } |
---|
675 | |
---|
676 | void CoreAudio_impl::CloseSPDIF() |
---|
677 | { |
---|
678 | OSStatus err; |
---|
679 | UInt32 i_param_size; |
---|
680 | |
---|
681 | /* Stop device */ |
---|
682 | err = AudioDeviceStop( mSelectedDevice, |
---|
683 | (AudioDeviceIOProc)RenderCallbackSPDIF ); |
---|
684 | if( err != noErr ) |
---|
685 | { |
---|
686 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::CloseSPDIF - AudioDeviceStop failed: %1").arg(err, 0, 16)); |
---|
687 | } |
---|
688 | |
---|
689 | /* Remove IOProc callback */ |
---|
690 | err = AudioDeviceRemoveIOProc( mSelectedDevice, |
---|
691 | (AudioDeviceIOProc)RenderCallbackSPDIF ); |
---|
692 | if( err != noErr ) |
---|
693 | { |
---|
694 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::CloseSPDIF - AudioDeviceRemoveIOProc failed: %1").arg(err, 0, 16)); |
---|
695 | } |
---|
696 | |
---|
697 | if( mRevert ) |
---|
698 | { |
---|
699 | AudioStreamChangeFormat( mStreamID, mStreamFmtRevert ); |
---|
700 | } |
---|
701 | |
---|
702 | if( mChangedMixing && mStreamFmtRevert.mFormatID != kAudioFormat60958AC3 ) |
---|
703 | { |
---|
704 | int b_mix; |
---|
705 | Boolean b_writeable; |
---|
706 | /* Revert mixable to true if we are allowed to */ |
---|
707 | err = AudioDeviceGetPropertyInfo( mSelectedDevice, 0, FALSE, kAudioDevicePropertySupportsMixing, |
---|
708 | &i_param_size, &b_writeable ); |
---|
709 | |
---|
710 | err = AudioDeviceGetProperty( mSelectedDevice, 0, FALSE, kAudioDevicePropertySupportsMixing, |
---|
711 | &i_param_size, &b_mix ); |
---|
712 | |
---|
713 | if( !err && b_writeable ) |
---|
714 | { |
---|
715 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::CloseSPDIF - mixable is: %1").arg(b_mix)); |
---|
716 | b_mix = 1; |
---|
717 | err = AudioDeviceSetProperty( mSelectedDevice, 0, 0, FALSE, |
---|
718 | kAudioDevicePropertySupportsMixing, i_param_size, &b_mix ); |
---|
719 | } |
---|
720 | |
---|
721 | if( err != noErr ) |
---|
722 | { |
---|
723 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::CloseSPDIF - failed to set mixmode: %d").arg(err, 0, 16)); |
---|
724 | } |
---|
725 | } |
---|
726 | } |
---|
727 | |
---|
728 | int CoreAudio_impl::getBufferedOnSoundcard(void) |
---|
729 | { |
---|
730 | return mBufferedBytes; |
---|
731 | } |
---|
732 | |
---|
733 | |
---|
734 | int CoreAudio_impl::GetVolumeChannel(int channel) |
---|
735 | { |
---|
736 | // FIXME: this only returns global volume |
---|
737 | (void)channel; |
---|
738 | Float32 volume; |
---|
739 | if (!AudioUnitGetParameter(mOutputUnit, |
---|
740 | kHALOutputParam_Volume, |
---|
741 | kAudioUnitScope_Global, |
---|
742 | 0, |
---|
743 | &volume)) |
---|
744 | { |
---|
745 | return (int)lroundf(volume * 100.0); |
---|
746 | } |
---|
747 | return 0; // error case |
---|
748 | } |
---|
749 | |
---|
750 | void CoreAudio_impl::SetVolumeChannel(int channel, int volume) |
---|
751 | { |
---|
752 | // FIXME: this only sets global volume |
---|
753 | (void)channel; |
---|
754 | AudioUnitSetParameter(mOutputUnit, |
---|
755 | kHALOutputParam_Volume, |
---|
756 | kAudioUnitScope_Global, |
---|
757 | 0, |
---|
758 | (volume * 0.01), |
---|
759 | 0); |
---|
760 | } |
---|
761 | |
---|
762 | /***************************************************************************** |
---|
763 | * AudioStreamChangeFormat: Change mStreamID to change_format |
---|
764 | *****************************************************************************/ |
---|
765 | int CoreAudio_impl::AudioStreamChangeFormat( AudioStreamID mStreamID, AudioStreamBasicDescription change_format ) |
---|
766 | { |
---|
767 | OSStatus err = noErr; |
---|
768 | |
---|
769 | VERBOSE(VB_IMPORTANT, QString("AudioStreamChangeFormat changing format for stream %1").arg(mStreamID)); |
---|
770 | /* change the format */ |
---|
771 | err = AudioStreamSetProperty( mStreamID, 0, 0, |
---|
772 | kAudioStreamPropertyPhysicalFormat, |
---|
773 | sizeof( AudioStreamBasicDescription ), |
---|
774 | &change_format ); |
---|
775 | if( err != noErr ) |
---|
776 | { |
---|
777 | VERBOSE( VB_IMPORTANT, QString("AudioStreamChangeFormat could not set the stream format: %1").arg(err, 0, 16)); |
---|
778 | return false; |
---|
779 | } |
---|
780 | |
---|
781 | return true; |
---|
782 | } |
---|
783 | |
---|
784 | void CoreAudio_impl::ReleaseHogMode() |
---|
785 | { |
---|
786 | OSStatus err; |
---|
787 | UInt32 i_param_size; |
---|
788 | |
---|
789 | mHogModePID = -1; |
---|
790 | i_param_size = sizeof( mHogModePID ); |
---|
791 | err = AudioDeviceSetProperty( mSelectedDevice, 0, 0, FALSE, |
---|
792 | kAudioDevicePropertyHogMode, i_param_size, &mHogModePID ); |
---|
793 | if (err != noErr) |
---|
794 | { |
---|
795 | VERBOSE(VB_AUDIO, QString("CoreAudio_impl::ReleaseHogMode - release failed %1").arg(err, 0, 16)); |
---|
796 | } |
---|
797 | |
---|
798 | } |
---|
799 | |
---|
800 | bool CoreAudio_impl::FindAC3Stream() |
---|
801 | { |
---|
802 | OSStatus err; |
---|
803 | UInt32 i_param_size; |
---|
804 | AudioStreamID *p_streams = NULL; |
---|
805 | int i = 0, i_streams = 0; |
---|
806 | bool foundAC3Stream = false; |
---|
807 | |
---|
808 | /* Get a list of all the streams on this device */ |
---|
809 | err = AudioDeviceGetPropertyInfo( mSelectedDevice, 0, FALSE, |
---|
810 | kAudioDevicePropertyStreams, |
---|
811 | &i_param_size, NULL ); |
---|
812 | if( err != noErr ) |
---|
813 | { |
---|
814 | VERBOSE( VB_IMPORTANT, QString("CoreAudio_impl::FindAC3Stream - could not get number of streams: %1").arg(err)); |
---|
815 | ReleaseHogMode(); |
---|
816 | return false; |
---|
817 | } |
---|
818 | |
---|
819 | i_streams = i_param_size / sizeof( AudioStreamID ); |
---|
820 | p_streams = (AudioStreamID *)malloc( i_param_size ); |
---|
821 | if( p_streams == NULL ) |
---|
822 | { |
---|
823 | VERBOSE(VB_IMPORTANT, "CoreAudio_impl::FindAC3Stream - out of memory" ); |
---|
824 | ReleaseHogMode(); |
---|
825 | return false; |
---|
826 | } |
---|
827 | |
---|
828 | err = AudioDeviceGetProperty( mSelectedDevice, 0, FALSE, |
---|
829 | kAudioDevicePropertyStreams, |
---|
830 | &i_param_size, p_streams ); |
---|
831 | |
---|
832 | if( err != noErr ) |
---|
833 | { |
---|
834 | VERBOSE( VB_IMPORTANT, QString("CoreAudio_impl::FindAC3Stream - could not get number of streams: %1").arg(err)); |
---|
835 | if( p_streams ) free( p_streams ); |
---|
836 | ReleaseHogMode(); |
---|
837 | return false; |
---|
838 | } |
---|
839 | |
---|
840 | for( i = 0; i < i_streams && !foundAC3Stream ; i++ ) |
---|
841 | { |
---|
842 | /* Find a stream with a cac3 stream */ |
---|
843 | AudioStreamBasicDescription *p_format_list = NULL; |
---|
844 | int i_formats = 0, j = 0; |
---|
845 | |
---|
846 | /* Retrieve all the stream formats supported by each output stream */ |
---|
847 | err = AudioStreamGetPropertyInfo( p_streams[i], 0, |
---|
848 | kAudioStreamPropertyPhysicalFormats, |
---|
849 | &i_param_size, NULL ); |
---|
850 | if( err != noErr ) |
---|
851 | { |
---|
852 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::FindAC3Stream - could not get number of streamformats: %1").arg(err)); |
---|
853 | continue; |
---|
854 | } |
---|
855 | |
---|
856 | i_formats = i_param_size / sizeof( AudioStreamBasicDescription ); |
---|
857 | p_format_list = (AudioStreamBasicDescription *)malloc( i_param_size ); |
---|
858 | if( p_format_list == NULL ) |
---|
859 | { |
---|
860 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::FindAC3Stream - could not malloc the memory" )); |
---|
861 | continue; |
---|
862 | } |
---|
863 | |
---|
864 | err = AudioStreamGetProperty( p_streams[i], 0, |
---|
865 | kAudioStreamPropertyPhysicalFormats, |
---|
866 | &i_param_size, p_format_list ); |
---|
867 | if( err != noErr ) |
---|
868 | { |
---|
869 | VERBOSE(VB_IMPORTANT, QString("CoreAudio_impl::FindAC3Stream - could not get the list of streamformats: %1").arg(err)); |
---|
870 | if( p_format_list) free( p_format_list); |
---|
871 | continue; |
---|
872 | } |
---|
873 | |
---|
874 | /* Check if one of the supported formats is a digital format */ |
---|
875 | for( j = 0; j < i_formats; j++ ) |
---|
876 | { |
---|
877 | if( p_format_list[j].mFormatID == 'IAC3' || |
---|
878 | p_format_list[j].mFormatID == kAudioFormat60958AC3 ) |
---|
879 | { |
---|
880 | VERBOSE(VB_AUDIO, "CoreAudio_impl::FindAC3Stream - found digital format"); |
---|
881 | foundAC3Stream = true; |
---|
882 | break; |
---|
883 | } |
---|
884 | } |
---|
885 | |
---|
886 | if (p_format_list) |
---|
887 | free(p_format_list); |
---|
888 | } |
---|
889 | |
---|
890 | if (p_streams) |
---|
891 | free(p_streams); |
---|
892 | |
---|
893 | return foundAC3Stream; |
---|
894 | } |
---|