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jack2/macosx/coreaudio/JackCoreAudioDriver.cpp

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  1. /*

  2. Copyright (C) 2004-2008 Grame

  3. 

  4. This program is free software; you can redistribute it and/or modify

  5. it under the terms of the GNU General Public License as published by

  6. the Free Software Foundation; either version 2 of the License, or

  7. (at your option) any later version.

  8. 

  9. This program is distributed in the hope that it will be useful,

  10. but WITHOUT ANY WARRANTY; without even the implied warranty of

  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  12. GNU General Public License for more details.

  13. 

  14. You should have received a copy of the GNU General Public License

  15. along with this program; if not, write to the Free Software

  16. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

  17. 

  18. */

  19. 

  20. #include "JackCoreAudioDriver.h"

  21. #include "JackEngineControl.h"

  22. #include "JackMachThread.h"

  23. #include "JackGraphManager.h"

  24. #include "JackError.h"

  25. #include "JackClientControl.h"

  26. #include "JackDriverLoader.h"

  27. #include "JackGlobals.h"

  28. #include "JackTools.h"

  29. #include "JackCompilerDeps.h"

  30. 

  31. #include <iostream>

  32. #include <CoreServices/CoreServices.h>

  33. #include <CoreFoundation/CFNumber.h>

  34. 

  35. namespace Jack

  36. {

  37. 

  38. static void Print4CharCode(const char* msg, long c)

  39. {

  40.     UInt32 __4CC_number = (c);

  41.     char __4CC_string[5];

  42.     *((SInt32*)__4CC_string) = EndianU32_NtoB(__4CC_number);		

  43.     __4CC_string[4] = 0;

  44.     jack_log("%s'%s'", (msg), __4CC_string);

  45. }

  46. 

  47. static void printError(OSStatus err)

  48. {

  49.     switch (err) {

  50.         case kAudioHardwareNoError:

  51.             jack_log("error code : kAudioHardwareNoError");

  52.             break;

  53.         case kAudioConverterErr_FormatNotSupported:

  54.             jack_log("error code : kAudioConverterErr_FormatNotSupported");

  55.             break;

  56.         case kAudioConverterErr_OperationNotSupported:

  57.             jack_log("error code : kAudioConverterErr_OperationNotSupported");

  58.             break;

  59.         case kAudioConverterErr_PropertyNotSupported:

  60.             jack_log("error code : kAudioConverterErr_PropertyNotSupported");

  61.             break;

  62.         case kAudioConverterErr_InvalidInputSize:

  63.             jack_log("error code : kAudioConverterErr_InvalidInputSize");

  64.             break;

  65.         case kAudioConverterErr_InvalidOutputSize:

  66.             jack_log("error code : kAudioConverterErr_InvalidOutputSize");

  67.             break;

  68.         case kAudioConverterErr_UnspecifiedError:

  69.             jack_log("error code : kAudioConverterErr_UnspecifiedError");

  70.             break;

  71.         case kAudioConverterErr_BadPropertySizeError:

  72.             jack_log("error code : kAudioConverterErr_BadPropertySizeError");

  73.             break;

  74.         case kAudioConverterErr_RequiresPacketDescriptionsError:

  75.             jack_log("error code : kAudioConverterErr_RequiresPacketDescriptionsError");

  76.             break;

  77.         case kAudioConverterErr_InputSampleRateOutOfRange:

  78.             jack_log("error code : kAudioConverterErr_InputSampleRateOutOfRange");

  79.             break;

  80.         case kAudioConverterErr_OutputSampleRateOutOfRange:

  81.             jack_log("error code : kAudioConverterErr_OutputSampleRateOutOfRange");

  82.             break;

  83.         case kAudioHardwareNotRunningError:

  84.             jack_log("error code : kAudioHardwareNotRunningError");

  85.             break;

  86.         case kAudioHardwareUnknownPropertyError:

  87.             jack_log("error code : kAudioHardwareUnknownPropertyError");

  88.             break;

  89.         case kAudioHardwareIllegalOperationError:

  90.             jack_log("error code : kAudioHardwareIllegalOperationError");

  91.             break;

  92.         case kAudioHardwareBadDeviceError:

  93.             jack_log("error code : kAudioHardwareBadDeviceError");

  94.             break;

  95.         case kAudioHardwareBadStreamError:

  96.             jack_log("error code : kAudioHardwareBadStreamError");

  97.             break;

  98.         case kAudioDeviceUnsupportedFormatError:

  99.             jack_log("error code : kAudioDeviceUnsupportedFormatError");

  100.             break;

  101.         case kAudioDevicePermissionsError:

  102.             jack_log("error code : kAudioDevicePermissionsError");

  103.             break;

  104.         case kAudioHardwareBadObjectError:

  105.             jack_log("error code : kAudioHardwareBadObjectError");

  106.             break;

  107.         case kAudioHardwareUnsupportedOperationError:

  108.             jack_log("error code : kAudioHardwareUnsupportedOperationError");

  109.             break;

  110.         default:

  111.             Print4CharCode("error code : unknown", err);

  112.             break;

  113.     }

  114. }

  115. 

  116. static OSStatus DisplayDeviceNames()

  117. {

  118.     UInt32 size;

  119.     Boolean isWritable;

  120.     int i, deviceNum;

  121.     OSStatus err;

  122.     CFStringRef UIname;

  123. 

  124.     err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &size, &isWritable);

  125.     if (err != noErr)

  126.         return err;

  127. 

  128.     deviceNum = size / sizeof(AudioDeviceID);

  129.     AudioDeviceID devices[deviceNum];

  130. 

  131.     err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &size, devices);

  132.     if (err != noErr)

  133.         return err;

  134. 

  135.     for (i = 0; i < deviceNum; i++) {

  136.         char device_name[256];

  137.         char internal_name[256];

  138. 

  139.         size = sizeof(CFStringRef);

  140.         UIname = NULL;

  141.         err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceUID, &size, &UIname);

  142.         if (err == noErr) {

  143.             CFStringGetCString(UIname, internal_name, 256, CFStringGetSystemEncoding());

  144.         } else {

  145.             goto error;

  146.         }

  147. 

  148.         size = 256;

  149.         err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceName, &size, device_name);

  150.         if (err != noErr)

  151.             return err;

  152. 

  153.         jack_info("Device name = \'%s\', internal_name = \'%s\' (to be used as -C, -P, or -d parameter)", device_name, internal_name);

  154.     }

  155. 

  156.     return noErr;

  157. 

  158. error:

  159.     if (UIname != NULL)

  160.         CFRelease(UIname);

  161.     return err;

  162. }

  163. 

  164. static CFStringRef GetDeviceName(AudioDeviceID id)

  165. {

  166.     UInt32 size = sizeof(CFStringRef);

  167.     CFStringRef UIname;

  168.     OSStatus err = AudioDeviceGetProperty(id, 0, false, kAudioDevicePropertyDeviceUID, &size, &UIname);

  169.     return (err == noErr) ? UIname : NULL;

  170. }

  171. 

  172. OSStatus JackCoreAudioDriver::Render(void *inRefCon,

  173.                                      AudioUnitRenderActionFlags *ioActionFlags,

  174.                                      const AudioTimeStamp *inTimeStamp,

  175.                                      UInt32 inBusNumber,

  176.                                      UInt32 inNumberFrames,

  177.                                      AudioBufferList *ioData)

  178. {

  179.     JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inRefCon;

  180.     driver->fActionFags = ioActionFlags;

  181.     driver->fCurrentTime = (AudioTimeStamp *)inTimeStamp;

  182.     driver->fDriverOutputData = ioData;

  183.     driver->CycleTakeBeginTime();

  184.     return driver->Process();

  185. }

  186. 

  187. int JackCoreAudioDriver::Read()

  188. {

  189.     AudioUnitRender(fAUHAL, fActionFags, fCurrentTime, 1, fEngineControl->fBufferSize, fJackInputData);

  190.     return 0;

  191. }

  192. 

  193. int JackCoreAudioDriver::Write()

  194. {

  195.     for (int i = 0; i < fPlaybackChannels; i++) {

  196.         if (fGraphManager->GetConnectionsNum(fPlaybackPortList[i]) > 0) {

  197.             float* buffer = GetOutputBuffer(i);

  198.             int size = sizeof(float) * fEngineControl->fBufferSize;

  199.             memcpy((float*)fDriverOutputData->mBuffers[i].mData, buffer, size);

  200.             // Monitor ports

  201.             if (fWithMonitorPorts && fGraphManager->GetConnectionsNum(fMonitorPortList[i]) > 0)

  202.                 memcpy(GetMonitorBuffer(i), buffer, size);

  203.         } else {

  204.             memset((float*)fDriverOutputData->mBuffers[i].mData, 0, sizeof(float) * fEngineControl->fBufferSize);

  205.         }

  206.     }

  207.     return 0;

  208. }

  209. 

  210. // Will run only once

  211. OSStatus JackCoreAudioDriver::MeasureCallback(AudioDeviceID inDevice,

  212.         const AudioTimeStamp* inNow,

  213.         const AudioBufferList* inInputData,

  214.         const AudioTimeStamp* inInputTime,

  215.         AudioBufferList* outOutputData,

  216.         const AudioTimeStamp* inOutputTime,

  217.         void* inClientData)

  218. {

  219.     JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;

  220.     AudioDeviceStop(driver->fDeviceID, MeasureCallback);

  221.     

  222.     jack_log("JackCoreAudioDriver::MeasureCallback called");

  223.     JackMachThread::GetParams(pthread_self(), &driver->fEngineControl->fPeriod, &driver->fEngineControl->fComputation, &driver->fEngineControl->fConstraint);

  224.     

  225.     if (driver->fComputationGrain > 0) {

  226.         jack_log("JackCoreAudioDriver::MeasureCallback : RT thread computation setup to %d percent of period", int(driver->fComputationGrain * 100));

  227.         driver->fEngineControl->fComputation = driver->fEngineControl->fPeriod * driver->fComputationGrain;

  228.     }

  229.     

  230.     // Setup threadded based log function

  231.     set_threaded_log_function();

  232.     return noErr;

  233. }

  234. 

  235. OSStatus JackCoreAudioDriver::SRNotificationCallback(AudioDeviceID inDevice,

  236.         UInt32 inChannel,

  237.         Boolean	isInput,

  238.         AudioDevicePropertyID inPropertyID,

  239.         void* inClientData)

  240. {

  241.     JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;

  242. 

  243.     switch (inPropertyID) {

  244. 

  245.         case kAudioDevicePropertyNominalSampleRate: {

  246.             jack_log("JackCoreAudioDriver::SRNotificationCallback kAudioDevicePropertyNominalSampleRate");

  247.             driver->fState = true;

  248.             break;

  249.         }

  250.     }

  251. 

  252.     return noErr;

  253. }

  254. 

  255. // A better implementation would possibly try to recover in case of hardware device change (see HALLAB HLFilePlayerWindowControllerAudioDevicePropertyListenerProc code)

  256. OSStatus JackCoreAudioDriver::DeviceNotificationCallback(AudioDeviceID inDevice,

  257.         UInt32 inChannel,

  258.         Boolean	isInput,

  259.         AudioDevicePropertyID inPropertyID,

  260.         void* inClientData)

  261. {

  262.     JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;

  263.          

  264.     switch (inPropertyID) {

  265.         

  266.         case kAudioDeviceProcessorOverload: {

  267.             jack_error("JackCoreAudioDriver::DeviceNotificationCallback kAudioDeviceProcessorOverload");

  268.             jack_time_t cur_time = GetMicroSeconds();

  269.             driver->NotifyXRun(cur_time, float(cur_time - driver->fBeginDateUst));   // Better this value than nothing... 

  270.             break;

  271.         }

  272.         

  273.         case kAudioDevicePropertyStreamConfiguration: {

  274.             jack_error("Cannot handle kAudioDevicePropertyStreamConfiguration : server will quit...");

  275.             driver->NotifyFailure(JackBackendError, "Another application has changed the device configuration.");   // Message length limited to JACK_MESSAGE_SIZE

  276.             driver->CloseAUHAL();

  277.             kill(JackTools::GetPID(), SIGINT);

  278.             return kAudioHardwareUnsupportedOperationError;

  279.         }

  280.         

  281.         case kAudioDevicePropertyNominalSampleRate: {

  282.             jack_error("Cannot handle kAudioDevicePropertyNominalSampleRate : server will quit...");

  283.             driver->NotifyFailure(JackBackendError, "Another application has changed the sample rate.");            // Message length limited to JACK_MESSAGE_SIZE

  284.             driver->CloseAUHAL();

  285.             kill(JackTools::GetPID(), SIGINT);

  286.             return kAudioHardwareUnsupportedOperationError;

  287. 		}

  288.             

  289.     }

  290.     return noErr;

  291. }

  292. 

  293. OSStatus JackCoreAudioDriver::GetDeviceIDFromUID(const char* UID, AudioDeviceID* id)

  294. {

  295.     UInt32 size = sizeof(AudioValueTranslation);

  296.     CFStringRef inIUD = CFStringCreateWithCString(NULL, UID, CFStringGetSystemEncoding());

  297.     AudioValueTranslation value = { &inIUD, sizeof(CFStringRef), id, sizeof(AudioDeviceID) };

  298. 

  299.     if (inIUD == NULL) {

  300.         return kAudioHardwareUnspecifiedError;

  301.     } else {

  302.         OSStatus res = AudioHardwareGetProperty(kAudioHardwarePropertyDeviceForUID, &size, &value);

  303.         CFRelease(inIUD);

  304.         jack_log("GetDeviceIDFromUID %s %ld", UID, *id);

  305.         return (*id == kAudioDeviceUnknown) ? kAudioHardwareBadDeviceError : res;

  306.     }

  307. }

  308. 

  309. OSStatus JackCoreAudioDriver::GetDefaultDevice(AudioDeviceID* id)

  310. {

  311.     OSStatus res;

  312.     UInt32 theSize = sizeof(UInt32);

  313.     AudioDeviceID inDefault;

  314.     AudioDeviceID outDefault;

  315. 

  316.     if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &theSize, &inDefault)) != noErr)

  317.         return res;

  318. 

  319.     if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &theSize, &outDefault)) != noErr)

  320.         return res;

  321. 

  322.     jack_log("GetDefaultDevice: input = %ld output = %ld", inDefault, outDefault);

  323. 

  324.     // Get the device only if default input and output are the same

  325.     if (inDefault == outDefault) {

  326.         *id = inDefault;

  327.         return noErr;

  328.     } else {

  329.         jack_error("Default input and output devices are not the same !!");

  330.         return kAudioHardwareBadDeviceError;

  331.     }

  332. }

  333. 

  334. OSStatus JackCoreAudioDriver::GetDefaultInputDevice(AudioDeviceID* id)

  335. {

  336.     OSStatus res;

  337.     UInt32 theSize = sizeof(UInt32);

  338.     AudioDeviceID inDefault;

  339. 

  340.     if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &theSize, &inDefault)) != noErr)

  341.         return res;

  342. 

  343.     jack_log("GetDefaultInputDevice: input = %ld ", inDefault);

  344.     *id = inDefault;

  345.     return noErr;

  346. }

  347. 

  348. OSStatus JackCoreAudioDriver::GetDefaultOutputDevice(AudioDeviceID* id)

  349. {

  350.     OSStatus res;

  351.     UInt32 theSize = sizeof(UInt32);

  352.     AudioDeviceID outDefault;

  353. 

  354.     if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &theSize, &outDefault)) != noErr)

  355.         return res;

  356. 

  357.     jack_log("GetDefaultOutputDevice: output = %ld", outDefault);

  358.     *id = outDefault;

  359.     return noErr;

  360. }

  361. 

  362. OSStatus JackCoreAudioDriver::GetDeviceNameFromID(AudioDeviceID id, char* name)

  363. {

  364.     UInt32 size = 256;

  365.     return AudioDeviceGetProperty(id, 0, false, kAudioDevicePropertyDeviceName, &size, name);

  366. }

  367. 

  368. OSStatus JackCoreAudioDriver::GetTotalChannels(AudioDeviceID device, int& channelCount, bool isInput)

  369. {

  370.     OSStatus err = noErr;

  371.     UInt32	outSize;

  372.     Boolean	outWritable;

  373.     AudioBufferList* bufferList = 0;

  374. 

  375.     channelCount = 0;

  376.     err = AudioDeviceGetPropertyInfo(device, 0, isInput, kAudioDevicePropertyStreamConfiguration, &outSize, &outWritable);

  377.     if (err == noErr) {

  378.         bufferList = (AudioBufferList*)malloc(outSize);

  379.         err = AudioDeviceGetProperty(device, 0, isInput, kAudioDevicePropertyStreamConfiguration, &outSize, bufferList);

  380.         if (err == noErr) {

  381.             for (unsigned int i = 0; i < bufferList->mNumberBuffers; i++)

  382.                 channelCount += bufferList->mBuffers[i].mNumberChannels;

  383.         }

  384. 

  385.         if (bufferList)

  386.             free(bufferList);

  387.     }

  388. 

  389.     return err;

  390. }

  391. 

  392. JackCoreAudioDriver::JackCoreAudioDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)

  393.         : JackAudioDriver(name, alias, engine, table), fJackInputData(NULL), fDriverOutputData(NULL), fPluginID(0), fState(false), fIOUsage(1.f),fComputationGrain(-1.f)

  394. {}

  395. 

  396. JackCoreAudioDriver::~JackCoreAudioDriver()

  397. {}

  398. 

  399. OSStatus JackCoreAudioDriver::DestroyAggregateDevice() 

  400. {

  401.     OSStatus osErr = noErr;

  402.     AudioObjectPropertyAddress pluginAOPA;

  403.     pluginAOPA.mSelector = kAudioPlugInDestroyAggregateDevice;

  404.     pluginAOPA.mScope = kAudioObjectPropertyScopeGlobal;

  405.     pluginAOPA.mElement = kAudioObjectPropertyElementMaster;

  406.     UInt32 outDataSize;

  407.   

  408.     osErr = AudioObjectGetPropertyDataSize(fPluginID, &pluginAOPA, 0, NULL, &outDataSize);

  409.     if (osErr != noErr) {

  410.         jack_error("JackCoreAudioDriver::DestroyAggregateDevice : AudioObjectGetPropertyDataSize error");

  411.         printError(osErr);

  412.         return osErr;

  413.     }

  414.         

  415.     osErr = AudioObjectGetPropertyData(fPluginID, &pluginAOPA, 0, NULL, &outDataSize, &fDeviceID);

  416.     if (osErr != noErr) {

  417.         jack_error("JackCoreAudioDriver::DestroyAggregateDevice : AudioObjectGetPropertyData error");

  418.         printError(osErr);

  419.         return osErr;

  420.     }

  421.     

  422.     return noErr;

  423. }

  424. 

  425. OSStatus JackCoreAudioDriver::CreateAggregateDevice(AudioDeviceID captureDeviceID, AudioDeviceID playbackDeviceID, AudioDeviceID* outAggregateDevice) 

  426. {

  427.     OSStatus osErr = noErr;

  428.     UInt32 outSize;

  429.     Boolean outWritable;

  430. 

  431.     //---------------------------------------------------------------------------

  432.     // Start to create a new aggregate by getting the base audio hardware plugin

  433.     //---------------------------------------------------------------------------

  434.     

  435.     char capture_name[256];

  436.     char playback_name[256];

  437.     GetDeviceNameFromID(captureDeviceID, capture_name);

  438.     GetDeviceNameFromID(playbackDeviceID, playback_name);

  439.     jack_info("Separated input = '%s' and output = '%s' devices, create a private aggregate device to handle them...", capture_name, playback_name);

  440.  

  441.     osErr = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyPlugInForBundleID, &outSize, &outWritable);

  442.     if (osErr != noErr) 

  443.         return osErr;

  444. 

  445.     AudioValueTranslation pluginAVT;

  446. 

  447.     CFStringRef inBundleRef = CFSTR("com.apple.audio.CoreAudio");

  448.    

  449.     pluginAVT.mInputData = &inBundleRef;

  450.     pluginAVT.mInputDataSize = sizeof(inBundleRef);

  451.     pluginAVT.mOutputData = &fPluginID;

  452.     pluginAVT.mOutputDataSize = sizeof(fPluginID);

  453. 

  454.     osErr = AudioHardwareGetProperty(kAudioHardwarePropertyPlugInForBundleID, &outSize, &pluginAVT);

  455.     if (osErr != noErr) 

  456.         return osErr;

  457. 

  458.     //-------------------------------------------------

  459.     // Create a CFDictionary for our aggregate device

  460.     //-------------------------------------------------

  461. 

  462.     CFMutableDictionaryRef aggDeviceDict = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

  463. 

  464.     CFStringRef AggregateDeviceNameRef = CFSTR("JackDuplex");

  465.     CFStringRef AggregateDeviceUIDRef = CFSTR("com.grame.JackDuplex");

  466.     

  467.     // add the name of the device to the dictionary

  468.     CFDictionaryAddValue(aggDeviceDict, CFSTR(kAudioAggregateDeviceNameKey), AggregateDeviceNameRef);

  469. 

  470.     // add our choice of UID for the aggregate device to the dictionary

  471.     CFDictionaryAddValue(aggDeviceDict, CFSTR(kAudioAggregateDeviceUIDKey), AggregateDeviceUIDRef);

  472.     

  473.     // add a "private aggregate key" to the dictionary

  474.     int value = 1;

  475.     CFNumberRef AggregateDeviceNumberRef = CFNumberCreate(NULL, kCFNumberIntType, &value);

  476.     CFDictionaryAddValue(aggDeviceDict, CFSTR(kAudioAggregateDeviceIsPrivateKey), AggregateDeviceNumberRef);

  477.   

  478.     //-------------------------------------------------

  479.     // Create a CFMutableArray for our sub-device list

  480.     //-------------------------------------------------

  481.     

  482.     CFStringRef captureDeviceUID = GetDeviceName(captureDeviceID);

  483.     CFStringRef playbackDeviceUID = GetDeviceName(playbackDeviceID);

  484.     

  485.     if (captureDeviceUID == NULL || playbackDeviceUID == NULL)

  486.         return -1;

  487.   

  488.     // we need to append the UID for each device to a CFMutableArray, so create one here

  489.     CFMutableArrayRef subDevicesArray = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);

  490. 

  491.     // two sub-devices in this example, so append the sub-device's UID to the CFArray

  492.     CFArrayAppendValue(subDevicesArray, captureDeviceUID);

  493.     CFArrayAppendValue(subDevicesArray, playbackDeviceUID);

  494. 

  495.     //-----------------------------------------------------------------------

  496.     // Feed the dictionary to the plugin, to create a blank aggregate device

  497.     //-----------------------------------------------------------------------

  498.  

  499.     AudioObjectPropertyAddress pluginAOPA;

  500.     pluginAOPA.mSelector = kAudioPlugInCreateAggregateDevice;

  501.     pluginAOPA.mScope = kAudioObjectPropertyScopeGlobal;

  502.     pluginAOPA.mElement = kAudioObjectPropertyElementMaster;

  503.     UInt32 outDataSize;

  504. 

  505.     osErr = AudioObjectGetPropertyDataSize(fPluginID, &pluginAOPA, 0, NULL, &outDataSize);

  506.     if (osErr != noErr) 

  507.         return osErr;

  508. 

  509.     osErr = AudioObjectGetPropertyData(fPluginID, &pluginAOPA, sizeof(aggDeviceDict), &aggDeviceDict, &outDataSize, outAggregateDevice);

  510.     if (osErr != noErr) 

  511.         return osErr;

  512. 

  513.     // pause for a bit to make sure that everything completed correctly

  514.     // this is to work around a bug in the HAL where a new aggregate device seems to disappear briefly after it is created

  515.     CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.1, false);

  516. 

  517.     //-------------------------

  518.     // Set the sub-device list

  519.     //-------------------------

  520. 

  521.     pluginAOPA.mSelector = kAudioAggregateDevicePropertyFullSubDeviceList;

  522.     pluginAOPA.mScope = kAudioObjectPropertyScopeGlobal;

  523.     pluginAOPA.mElement = kAudioObjectPropertyElementMaster;

  524.     outDataSize = sizeof(CFMutableArrayRef);

  525.     osErr = AudioObjectSetPropertyData(*outAggregateDevice, &pluginAOPA, 0, NULL, outDataSize, &subDevicesArray);

  526.     if (osErr != noErr)

  527.         return osErr;

  528. 

  529.     // pause again to give the changes time to take effect

  530.     CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.1, false);

  531. 

  532.     //-----------------------

  533.     // Set the master device

  534.     //-----------------------

  535. 

  536.     // set the master device manually (this is the device which will act as the master clock for the aggregate device)

  537.     // pass in the UID of the device you want to use

  538.     pluginAOPA.mSelector = kAudioAggregateDevicePropertyMasterSubDevice;

  539.     pluginAOPA.mScope = kAudioObjectPropertyScopeGlobal;

  540.     pluginAOPA.mElement = kAudioObjectPropertyElementMaster;

  541.     outDataSize = sizeof(CFStringRef);

  542.     osErr = AudioObjectSetPropertyData(*outAggregateDevice, &pluginAOPA, 0, NULL, outDataSize, &captureDeviceUID);  // capture is master...

  543.     if (osErr != noErr) 

  544.         return osErr;

  545. 

  546.     // pause again to give the changes time to take effect

  547.     CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.1, false);

  548. 

  549.     //----------

  550.     // Clean up

  551.     //----------

  552.     

  553.     CFRelease(AggregateDeviceNumberRef);

  554. 

  555.     // release the CF objects we have created - we don't need them any more

  556.     CFRelease(aggDeviceDict);

  557.     CFRelease(subDevicesArray);

  558. 

  559.     // release the device UID

  560.     CFRelease(captureDeviceUID);

  561.     CFRelease(playbackDeviceUID);

  562.     

  563.     jack_log("New aggregate device %ld", *outAggregateDevice);

  564.     return noErr;

  565. }

  566. 

  567. int JackCoreAudioDriver::SetupDevices(const char* capture_driver_uid, const char* playback_driver_uid, char* capture_driver_name, char* playback_driver_name)

  568. {

  569.     capture_driver_name[0] = 0;

  570.     playback_driver_name[0] = 0;

  571. 

  572.     // Duplex

  573.     if (strcmp(capture_driver_uid, "") != 0 && strcmp(playback_driver_uid, "") != 0) {

  574.         jack_log("JackCoreAudioDriver::Open duplex");

  575.           

  576.         // Same device for capture and playback...

  577.         if (strcmp(capture_driver_uid, playback_driver_uid) == 0)  {

  578.             

  579.             if (GetDeviceIDFromUID(playback_driver_uid, &fDeviceID) != noErr) {

  580.                 jack_log("Will take default in/out");

  581.                 if (GetDefaultDevice(&fDeviceID) != noErr) {

  582.                     jack_error("Cannot open default device");

  583.                     return -1;

  584.                 }

  585.             }

  586.             if (GetDeviceNameFromID(fDeviceID, capture_driver_name) != noErr || GetDeviceNameFromID(fDeviceID, playback_driver_name) != noErr) {

  587.                 jack_error("Cannot get device name from device ID");

  588.                 return -1;

  589.             }

  590.             

  591.         } else {

  592.         

  593.             // Creates aggregate device

  594.             AudioDeviceID captureID, playbackID;

  595.             if (GetDeviceIDFromUID(capture_driver_uid, &captureID) != noErr)

  596.                 return -1;

  597.             if (GetDeviceIDFromUID(playback_driver_uid, &playbackID) != noErr) 

  598.                 return -1;

  599.             if (CreateAggregateDevice(captureID, playbackID, &fDeviceID) != noErr)

  600.                 return -1;

  601.         }

  602. 

  603.     // Capture only

  604.     } else if (strcmp(capture_driver_uid, "") != 0) {

  605.         jack_log("JackCoreAudioDriver::Open capture only");

  606.         if (GetDeviceIDFromUID(capture_driver_uid, &fDeviceID) != noErr) {

  607.             jack_log("Will take default input");

  608.             if (GetDefaultInputDevice(&fDeviceID) != noErr) {

  609.                 jack_error("Cannot open default device");

  610.                 return -1;

  611.             }

  612.         }

  613.         if (GetDeviceNameFromID(fDeviceID, capture_driver_name) != noErr) {

  614.             jack_error("Cannot get device name from device ID");

  615.             return -1;

  616.         }

  617. 

  618.     // Playback only

  619.     } else if (strcmp(playback_driver_uid, "") != 0) {

  620.         jack_log("JackCoreAudioDriver::Open playback only");

  621.         if (GetDeviceIDFromUID(playback_driver_uid, &fDeviceID) != noErr) {

  622.             jack_log("Will take default output");

  623.             if (GetDefaultOutputDevice(&fDeviceID) != noErr) {

  624.                 jack_error("Cannot open default device");

  625.                 return -1;

  626.             }

  627.         }

  628.         if (GetDeviceNameFromID(fDeviceID, playback_driver_name) != noErr) {

  629.             jack_error("Cannot get device name from device ID");

  630.             return -1;

  631.         }

  632. 

  633.     // Use default driver in duplex mode

  634.     } else {

  635.         jack_log("JackCoreAudioDriver::Open default driver");

  636.         if (GetDefaultDevice(&fDeviceID) != noErr) {

  637.             jack_error("Cannot open default device");

  638.             return -1;

  639.         }

  640.         if (GetDeviceNameFromID(fDeviceID, capture_driver_name) != noErr || GetDeviceNameFromID(fDeviceID, playback_driver_name) != noErr) {

  641.             jack_error("Cannot get device name from device ID");

  642.             return -1;

  643.         }

  644.     }

  645. 

  646.     return 0;

  647. }

  648. 

  649. /*

  650. Return the max possible input channels in in_nChannels and output channels in out_nChannels.

  651. */

  652. int JackCoreAudioDriver::SetupChannels(bool capturing, bool playing, int& inchannels, int& outchannels, int& in_nChannels, int& out_nChannels, bool strict)

  653. {

  654.     OSStatus err = noErr;

  655. 

  656.     if (capturing) {

  657.         err = GetTotalChannels(fDeviceID, in_nChannels, true);

  658.         if (err != noErr) {

  659.             jack_error("Cannot get input channel number");

  660.             printError(err);

  661.             return -1;

  662.         } else {

  663.             jack_log("Max input channels : %d", in_nChannels);

  664.         }

  665.     }

  666. 

  667.     if (playing) {

  668.         err = GetTotalChannels(fDeviceID, out_nChannels, false);

  669.         if (err != noErr) {

  670.             jack_error("Cannot get output channel number");

  671.             printError(err);

  672.             return -1;

  673.         } else {

  674.             jack_log("Max output channels : %d", out_nChannels);

  675.         }

  676.     }

  677. 

  678.     if (inchannels > in_nChannels) {

  679.         jack_error("This device hasn't required input channels inchannels = %d in_nChannels = %d", inchannels, in_nChannels);

  680.         if (strict)

  681.             return -1;

  682.     }

  683. 

  684.     if (outchannels > out_nChannels) {

  685.         jack_error("This device hasn't required output channels outchannels = %d out_nChannels = %d", outchannels, out_nChannels);

  686.         if (strict)

  687.             return -1;

  688.     }

  689. 

  690.     if (inchannels == 0) {

  691.         jack_log("Setup max in channels = %d", in_nChannels);

  692.         inchannels = in_nChannels;

  693.     }

  694. 

  695.     if (outchannels == 0) {

  696.         jack_log("Setup max out channels = %d", out_nChannels);

  697.         outchannels = out_nChannels;

  698.     }

  699. 

  700.     return 0;

  701. }

  702. 

  703. int JackCoreAudioDriver::SetupBufferSizeAndSampleRate(jack_nframes_t buffer_size, jack_nframes_t samplerate)

  704. {

  705.     OSStatus err = noErr;

  706.     UInt32 outSize;

  707.     Float64 sampleRate;

  708. 

  709.     // Setting buffer size

  710.     outSize = sizeof(UInt32);

  711.     err = AudioDeviceSetProperty(fDeviceID, NULL, 0, false, kAudioDevicePropertyBufferFrameSize, outSize, &buffer_size);

  712.     if (err != noErr) {

  713.         jack_error("Cannot set buffer size %ld", buffer_size);

  714.         printError(err);

  715.         return -1;

  716.     }

  717. 

  718.     // Get sample rate

  719.     outSize =  sizeof(Float64);

  720.     err = AudioDeviceGetProperty(fDeviceID, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, &outSize, &sampleRate);

  721.     if (err != noErr) {

  722.         jack_error("Cannot get current sample rate");

  723.         printError(err);

  724.         return -1;

  725.     }

  726. 

  727.     // If needed, set new sample rate

  728.     if (samplerate != (jack_nframes_t)sampleRate) {

  729.         sampleRate = (Float64)samplerate;

  730. 

  731.         // To get SR change notification

  732.         err = AudioDeviceAddPropertyListener(fDeviceID, 0, true, kAudioDevicePropertyNominalSampleRate, SRNotificationCallback, this);

  733.         if (err != noErr) {

  734.             jack_error("Error calling AudioDeviceAddPropertyListener with kAudioDevicePropertyNominalSampleRate");

  735.             printError(err);

  736.             return -1;

  737.         }

  738.         err = AudioDeviceSetProperty(fDeviceID, NULL, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, outSize, &sampleRate);

  739.         if (err != noErr) {

  740.             jack_error("Cannot set sample rate = %ld", samplerate);

  741.             printError(err);

  742.             return -1;

  743.         }

  744. 

  745.         // Waiting for SR change notification

  746.         int count = 0;

  747.         while (!fState && count++ < 100) {

  748.             usleep(100000);

  749.             jack_log("Wait count = %d", count);

  750.         }

  751. 

  752.         // Remove SR change notification

  753.         AudioDeviceRemovePropertyListener(fDeviceID, 0, true, kAudioDevicePropertyNominalSampleRate, SRNotificationCallback);

  754.     }

  755. 

  756.     return 0;

  757. }

  758. 

  759. int JackCoreAudioDriver::OpenAUHAL(bool capturing,

  760.                                    bool playing,

  761.                                    int inchannels,

  762.                                    int outchannels,

  763.                                    int in_nChannels,

  764.                                    int out_nChannels,

  765.                                    jack_nframes_t buffer_size,

  766.                                    jack_nframes_t samplerate,

  767.                                    bool strict)

  768. {

  769.     ComponentResult err1;

  770.     UInt32 enableIO;

  771.     AudioStreamBasicDescription srcFormat, dstFormat;

  772. 

  773.     jack_log("OpenAUHAL capturing = %d playing = %d inchannels = %d outchannels = %d in_nChannels = %d out_nChannels = %d", capturing, playing, inchannels, outchannels, in_nChannels, out_nChannels);

  774. 

  775.     if (inchannels == 0 && outchannels == 0) {

  776.         jack_error("No input and output channels...");

  777.         return -1;

  778.     }

  779.          

  780.     // AUHAL

  781.     ComponentDescription cd = {kAudioUnitType_Output, kAudioUnitSubType_HALOutput, kAudioUnitManufacturer_Apple, 0, 0};

  782.     Component HALOutput = FindNextComponent(NULL, &cd);

  783. 

  784.     err1 = OpenAComponent(HALOutput, &fAUHAL);

  785.     if (err1 != noErr) {

  786.         jack_error("Error calling OpenAComponent");

  787.         printError(err1);

  788.         return -1;

  789.     }

  790. 

  791.     err1 = AudioUnitInitialize(fAUHAL);

  792.     if (err1 != noErr) {

  793.         jack_error("Cannot initialize AUHAL unit");

  794.         printError(err1);

  795.         return -1;

  796.     }

  797. 

  798.     // Start I/O

  799.     if (capturing && inchannels > 0) {

  800.         enableIO = 1;

  801.         jack_log("Setup AUHAL input on");

  802.     } else {

  803.         enableIO = 0;

  804.         jack_log("Setup AUHAL input off");

  805.     }

  806.     

  807.     err1 = AudioUnitSetProperty(fAUHAL, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, 1, &enableIO, sizeof(enableIO));

  808.     if (err1 != noErr) {

  809.         jack_error("Error calling AudioUnitSetProperty - kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input");

  810.         printError(err1);

  811.         if (strict)

  812.             return -1;

  813.     }

  814. 

  815.     if (playing && outchannels > 0) {

  816.         enableIO = 1;

  817.         jack_log("Setup AUHAL output on");

  818.     } else {

  819.         enableIO = 0;

  820.         jack_log("Setup AUHAL output off");

  821.     }

  822.     

  823.     err1 = AudioUnitSetProperty(fAUHAL, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, 0, &enableIO, sizeof(enableIO));

  824.     if (err1 != noErr) {

  825.         jack_error("Error calling AudioUnitSetProperty - kAudioOutputUnitProperty_EnableIO,kAudioUnitScope_Output");

  826.         printError(err1);

  827.         if (strict)

  828.             return -1;

  829.     }

  830.     

  831.     AudioDeviceID currAudioDeviceID;

  832.     UInt32 size = sizeof(AudioDeviceID);

  833.     err1 = AudioUnitGetProperty(fAUHAL, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &currAudioDeviceID, &size);

  834.     if (err1 != noErr) {

  835.         jack_error("Error calling AudioUnitGetProperty - kAudioOutputUnitProperty_CurrentDevice");

  836.         printError(err1);

  837.         if (strict)

  838.             return -1;

  839.     } else {

  840.         jack_log("AudioUnitGetPropertyCurrentDevice = %d", currAudioDeviceID);

  841.     }

  842. 

  843.     // Setup up choosen device, in both input and output cases

  844.     err1 = AudioUnitSetProperty(fAUHAL, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &fDeviceID, sizeof(AudioDeviceID));

  845.     if (err1 != noErr) {

  846.         jack_error("Error calling AudioUnitSetProperty - kAudioOutputUnitProperty_CurrentDevice");

  847.         printError(err1);

  848.         if (strict)

  849.             return -1;

  850.     }

  851.   

  852.     // Set buffer size

  853.     if (capturing && inchannels > 0) {

  854.         err1 = AudioUnitSetProperty(fAUHAL, kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global, 1, (UInt32*)&buffer_size, sizeof(UInt32));

  855.         if (err1 != noErr) {

  856.             jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_MaximumFramesPerSlice");

  857.             printError(err1);

  858.             if (strict)

  859.                 return -1;

  860.         }

  861.     }

  862. 

  863.     if (playing && outchannels > 0) {

  864.         err1 = AudioUnitSetProperty(fAUHAL, kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global, 0, (UInt32*)&buffer_size, sizeof(UInt32));

  865.         if (err1 != noErr) {

  866.             jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_MaximumFramesPerSlice");

  867.             printError(err1);

  868.             if (strict)

  869.                 return -1;

  870.         }

  871.     }

  872. 

  873.     // Setup channel map

  874.     if (capturing && inchannels > 0 && inchannels < in_nChannels) {

  875.         SInt32 chanArr[in_nChannels];

  876.         for (int i = 0; i < in_nChannels; i++) {

  877.             chanArr[i] = -1;

  878.         }

  879.         for (int i = 0; i < inchannels; i++) {

  880.             chanArr[i] = i;

  881.         }

  882.         AudioUnitSetProperty(fAUHAL, kAudioOutputUnitProperty_ChannelMap , kAudioUnitScope_Input, 1, chanArr, sizeof(SInt32) * in_nChannels);

  883.         if (err1 != noErr) {

  884.             jack_error("Error calling AudioUnitSetProperty - kAudioOutputUnitProperty_ChannelMap 1");

  885.             printError(err1);

  886.         }

  887.     }

  888. 

  889.     if (playing && outchannels > 0 && outchannels < out_nChannels) {

  890.         SInt32 chanArr[out_nChannels];

  891.         for (int i = 0;	i < out_nChannels; i++) {

  892.             chanArr[i] = -1;

  893.         }

  894.         for (int i = 0; i < outchannels; i++) {

  895.             chanArr[i] = i;

  896.         }

  897.         err1 = AudioUnitSetProperty(fAUHAL, kAudioOutputUnitProperty_ChannelMap, kAudioUnitScope_Output, 0, chanArr, sizeof(SInt32) * out_nChannels);

  898.         if (err1 != noErr) {

  899.             jack_error("Error calling AudioUnitSetProperty - kAudioOutputUnitProperty_ChannelMap 0");

  900.             printError(err1);

  901.         }

  902.     }

  903. 

  904.     // Setup stream converters

  905.     jack_log("Setup AUHAL input stream converter SR = %ld", samplerate);

  906.     srcFormat.mSampleRate = samplerate;

  907.     srcFormat.mFormatID = kAudioFormatLinearPCM;

  908.     srcFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kLinearPCMFormatFlagIsNonInterleaved;

  909.     srcFormat.mBytesPerPacket = sizeof(float);

  910.     srcFormat.mFramesPerPacket = 1;

  911.     srcFormat.mBytesPerFrame = sizeof(float);

  912.     srcFormat.mChannelsPerFrame = outchannels;

  913.     srcFormat.mBitsPerChannel = 32;

  914. 

  915.     err1 = AudioUnitSetProperty(fAUHAL, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &srcFormat, sizeof(AudioStreamBasicDescription));

  916.     if (err1 != noErr) {

  917.         jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_StreamFormat kAudioUnitScope_Input");

  918.         printError(err1);

  919.     }

  920. 

  921.     jack_log("Setup AUHAL output stream converter SR = %ld", samplerate);

  922.     dstFormat.mSampleRate = samplerate;

  923.     dstFormat.mFormatID = kAudioFormatLinearPCM;

  924.     dstFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kLinearPCMFormatFlagIsNonInterleaved;

  925.     dstFormat.mBytesPerPacket = sizeof(float);

  926.     dstFormat.mFramesPerPacket = 1;

  927.     dstFormat.mBytesPerFrame = sizeof(float);

  928.     dstFormat.mChannelsPerFrame = inchannels;

  929.     dstFormat.mBitsPerChannel = 32;

  930. 

  931.     err1 = AudioUnitSetProperty(fAUHAL, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &dstFormat, sizeof(AudioStreamBasicDescription));

  932.     if (err1 != noErr) {

  933.         jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_StreamFormat kAudioUnitScope_Output");

  934.         printError(err1);

  935.     }

  936. 

  937.     // Setup callbacks

  938.     if (inchannels > 0 && outchannels == 0) {

  939.         AURenderCallbackStruct output;

  940.         output.inputProc = Render;

  941.         output.inputProcRefCon = this;

  942.         err1 = AudioUnitSetProperty(fAUHAL, kAudioOutputUnitProperty_SetInputCallback, kAudioUnitScope_Global, 0, &output, sizeof(output));

  943.         if (err1 != noErr) {

  944.             jack_error("Error calling  AudioUnitSetProperty - kAudioUnitProperty_SetRenderCallback 1");

  945.             printError(err1);

  946.             return -1;

  947.         }

  948.     } else {

  949.         AURenderCallbackStruct output;

  950.         output.inputProc = Render;

  951.         output.inputProcRefCon = this;

  952.         err1 = AudioUnitSetProperty(fAUHAL, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0, &output, sizeof(output));

  953.         if (err1 != noErr) {

  954.             jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_SetRenderCallback 0");

  955.             printError(err1);

  956.             return -1;

  957.         }

  958.     }

  959. 

  960.     return 0;

  961. }

  962. 

  963. int JackCoreAudioDriver::SetupBuffers(int inchannels)

  964. {

  965.     // Prepare buffers

  966.     fJackInputData = (AudioBufferList*)malloc(sizeof(UInt32) + inchannels * sizeof(AudioBuffer));

  967.     if (fJackInputData == 0) {

  968.         jack_error("Cannot allocate memory for input buffers");

  969.         return -1;

  970.     }

  971.     fJackInputData->mNumberBuffers = inchannels;

  972.     for (int i = 0; i < fCaptureChannels; i++) {

  973.         fJackInputData->mBuffers[i].mNumberChannels = 1;

  974.         fJackInputData->mBuffers[i].mDataByteSize = fEngineControl->fBufferSize * sizeof(float);

  975.     }

  976.     return 0;

  977. }

  978. 

  979. void JackCoreAudioDriver::DisposeBuffers()

  980. {

  981.     if (fJackInputData) {

  982.         free(fJackInputData);

  983.         fJackInputData = 0;

  984.     }

  985. }

  986. 

  987. void JackCoreAudioDriver::CloseAUHAL()

  988. {

  989.     AudioUnitUninitialize(fAUHAL);

  990.     CloseComponent(fAUHAL);

  991. }

  992. 

  993. int JackCoreAudioDriver::AddListeners()

  994. {

  995.     OSStatus err = noErr;

  996. 

  997.     // Add listeners

  998.     err = AudioDeviceAddPropertyListener(fDeviceID, 0, true, kAudioDeviceProcessorOverload, DeviceNotificationCallback, this);

  999.     if (err != noErr) {

  1000.         jack_error("Error calling AudioDeviceAddPropertyListener with kAudioDeviceProcessorOverload");

  1001.         printError(err);

  1002.         return -1;

  1003.     }

  1004. 

  1005.     err = AudioDeviceAddPropertyListener(fDeviceID, 0, true, kAudioHardwarePropertyDevices, DeviceNotificationCallback, this);

  1006.     if (err != noErr) {

  1007.         jack_error("Error calling AudioDeviceAddPropertyListener with kAudioHardwarePropertyDevices");

  1008.         printError(err);

  1009.         return -1;

  1010.     }

  1011. 

  1012.     err = AudioDeviceAddPropertyListener(fDeviceID, 0, true, kAudioDevicePropertyNominalSampleRate, DeviceNotificationCallback, this);

  1013.     if (err != noErr) {

  1014.         jack_error("Error calling AudioDeviceAddPropertyListener with kAudioDevicePropertyNominalSampleRate");

  1015.         printError(err);

  1016.         return -1;

  1017.     }

  1018. 

  1019.     err = AudioDeviceAddPropertyListener(fDeviceID, 0, true, kAudioDevicePropertyDeviceIsRunning, DeviceNotificationCallback, this);

  1020.     if (err != noErr) {

  1021.         jack_error("Error calling AudioDeviceAddPropertyListener with kAudioDevicePropertyDeviceIsRunning");

  1022.         printError(err);

  1023.         return -1;

  1024.     }

  1025. 

  1026.     err = AudioDeviceAddPropertyListener(fDeviceID, 0, true, kAudioDevicePropertyStreamConfiguration, DeviceNotificationCallback, this);

  1027.     if (err != noErr) {

  1028.         jack_error("Error calling AudioDeviceAddPropertyListener with kAudioDevicePropertyStreamConfiguration");

  1029.         printError(err);

  1030.         return -1;

  1031.     }

  1032. 

  1033.     err = AudioDeviceAddPropertyListener(fDeviceID, 0, false, kAudioDevicePropertyStreamConfiguration, DeviceNotificationCallback, this);

  1034.     if (err != noErr) {

  1035.         jack_error("Error calling AudioDeviceAddPropertyListener with kAudioDevicePropertyStreamConfiguration");

  1036.         printError(err);

  1037.         return -1;

  1038.     }

  1039. 

  1040.     if (!fEngineControl->fSyncMode && fIOUsage != 1.f) {

  1041.         UInt32 outSize = sizeof(float);

  1042.         err = AudioDeviceSetProperty(fDeviceID, NULL, 0, false, kAudioDevicePropertyIOCycleUsage, outSize, &fIOUsage);

  1043.         if (err != noErr) {

  1044.             jack_error("Error calling AudioDeviceSetProperty kAudioDevicePropertyIOCycleUsage");

  1045.             printError(err);

  1046.         }

  1047.     }

  1048. 

  1049.     return 0;

  1050. }

  1051. 

  1052. void JackCoreAudioDriver::RemoveListeners()

  1053. {

  1054.     AudioDeviceRemovePropertyListener(fDeviceID, 0, true, kAudioDeviceProcessorOverload, DeviceNotificationCallback);

  1055.     AudioDeviceRemovePropertyListener(fDeviceID, 0, true, kAudioHardwarePropertyDevices, DeviceNotificationCallback);

  1056.     AudioDeviceRemovePropertyListener(fDeviceID, 0, true, kAudioDevicePropertyNominalSampleRate, DeviceNotificationCallback);

  1057.     AudioDeviceRemovePropertyListener(fDeviceID, 0, true, kAudioDevicePropertyDeviceIsRunning, DeviceNotificationCallback);

  1058.     AudioDeviceRemovePropertyListener(fDeviceID, 0, true, kAudioDevicePropertyStreamConfiguration, DeviceNotificationCallback);

  1059.     AudioDeviceRemovePropertyListener(fDeviceID, 0, false, kAudioDevicePropertyStreamConfiguration, DeviceNotificationCallback);

  1060. }

  1061. 

  1062. int JackCoreAudioDriver::Open(jack_nframes_t buffer_size,

  1063.                               jack_nframes_t samplerate,

  1064.                               bool capturing,

  1065.                               bool playing,

  1066.                               int inchannels,

  1067.                               int outchannels,

  1068.                               bool monitor,

  1069.                               const char* capture_driver_uid,

  1070.                               const char* playback_driver_uid,

  1071.                               jack_nframes_t capture_latency,

  1072.                               jack_nframes_t playback_latency,

  1073.                               int async_output_latency,

  1074.                               int computation_grain)

  1075. {

  1076.     int in_nChannels = 0;

  1077.     int out_nChannels = 0;

  1078.     char capture_driver_name[256];

  1079.     char playback_driver_name[256];

  1080. 

  1081.     // Keep initial state

  1082.     fCapturing = capturing;

  1083.     fPlaying = playing;

  1084.     fInChannels = inchannels;

  1085.     fOutChannels = outchannels;

  1086.     fMonitor = monitor;

  1087.     strcpy(fCaptureUID, capture_driver_uid);

  1088.     strcpy(fPlaybackUID, playback_driver_uid);

  1089.     fCaptureLatency = capture_latency;

  1090.     fPlaybackLatency = playback_latency;

  1091.     fIOUsage = float(async_output_latency) / 100.f;

  1092.     fComputationGrain = float(computation_grain) / 100.f;

  1093.     

  1094.     SInt32 major;

  1095.     SInt32 minor;

  1096.     Gestalt(gestaltSystemVersionMajor, &major);

  1097.     Gestalt(gestaltSystemVersionMinor, &minor);

  1098.     

  1099.     // Starting with 10.6 systems, the HAL notification thread is created internally

  1100.     if (major == 10 && minor >=6) {

  1101.         CFRunLoopRef theRunLoop = NULL;

  1102.         AudioObjectPropertyAddress theAddress = { kAudioHardwarePropertyRunLoop, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster };

  1103.         OSStatus theError = AudioObjectSetPropertyData (kAudioObjectSystemObject, &theAddress, 0, NULL, sizeof(CFRunLoopRef), &theRunLoop);

  1104.         if (theError != noErr) {

  1105.             jack_error("JackCoreAudioDriver::Open kAudioHardwarePropertyRunLoop error");

  1106.         }

  1107.     }

  1108. 

  1109.     if (SetupDevices(capture_driver_uid, playback_driver_uid, capture_driver_name, playback_driver_name) < 0)

  1110.         return -1;

  1111. 

  1112.     // Generic JackAudioDriver Open

  1113.     if (JackAudioDriver::Open(buffer_size, samplerate, capturing, playing, inchannels, outchannels, monitor, capture_driver_name, playback_driver_name, capture_latency, playback_latency) != 0)

  1114.         return -1;

  1115. 

  1116.     if (SetupChannels(capturing, playing, inchannels, outchannels, in_nChannels, out_nChannels, true) < 0)

  1117.         return -1;

  1118. 

  1119.     if (SetupBufferSizeAndSampleRate(buffer_size, samplerate)  < 0)

  1120.         return -1;

  1121.  

  1122.     if (OpenAUHAL(capturing, playing, inchannels, outchannels, in_nChannels, out_nChannels, buffer_size, samplerate, true) < 0)

  1123.         goto error;

  1124. 

  1125.     if (capturing && inchannels > 0)

  1126.         if (SetupBuffers(inchannels) < 0)

  1127.             goto error;

  1128. 

  1129.     if (AddListeners() < 0)

  1130.         goto error;

  1131. 

  1132.     // Core driver may have changed the in/out values

  1133.     fCaptureChannels = inchannels;

  1134.     fPlaybackChannels = outchannels;

  1135.     return noErr;

  1136. 

  1137. error:

  1138.     Close();

  1139.     return -1;

  1140. }

  1141. 

  1142. int JackCoreAudioDriver::Close()

  1143. {

  1144.     jack_log("JackCoreAudioDriver::Close");

  1145.     Stop();

  1146.     JackAudioDriver::Close();

  1147.     RemoveListeners();

  1148.     DisposeBuffers();

  1149.     CloseAUHAL();

  1150.     if (fPluginID > 0)

  1151.         DestroyAggregateDevice();

  1152.     return 0;

  1153. }

  1154. 

  1155. int JackCoreAudioDriver::Attach()

  1156. {

  1157.     OSStatus err;

  1158.     JackPort* port;

  1159.     jack_port_id_t port_index;

  1160.     UInt32 size;

  1161.     Boolean isWritable;

  1162.     char channel_name[64];

  1163.     char name[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];

  1164.     char alias[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];

  1165.     unsigned long port_flags = JackPortIsOutput | JackPortIsPhysical | JackPortIsTerminal;

  1166. 

  1167.     jack_log("JackCoreAudioDriver::Attach fBufferSize %ld fSampleRate %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate);

  1168. 

  1169.     for (int i = 0; i < fCaptureChannels; i++) {

  1170. 

  1171.         err = AudioDeviceGetPropertyInfo(fDeviceID, i + 1, true, kAudioDevicePropertyChannelName, &size, &isWritable);

  1172.         if (err != noErr)

  1173.             jack_log("AudioDeviceGetPropertyInfo kAudioDevicePropertyChannelName error ");

  1174.         if (err == noErr && size > 0) {

  1175.             err = AudioDeviceGetProperty(fDeviceID, i + 1, true, kAudioDevicePropertyChannelName, &size, channel_name);

  1176.             if (err != noErr)

  1177.                 jack_log("AudioDeviceGetProperty kAudioDevicePropertyChannelName error ");

  1178.             snprintf(alias, sizeof(alias) - 1, "%s:%s:out_%s%u", fAliasName, fCaptureDriverName, channel_name, i + 1);

  1179.         } else {

  1180.             snprintf(alias, sizeof(alias) - 1, "%s:%s:out%u", fAliasName, fCaptureDriverName, i + 1);

  1181.         }

  1182. 

  1183.         snprintf(name, sizeof(name) - 1, "%s:capture_%d", fClientControl.fName, i + 1);

  1184. 

  1185.         if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, (JackPortFlags)port_flags, fEngineControl->fBufferSize)) == NO_PORT) {

  1186.             jack_error("Cannot register port for %s", name);

  1187.             return -1;

  1188.         }

  1189. 

  1190.         size = sizeof(UInt32);

  1191.         UInt32 value1 = 0;

  1192.         UInt32 value2 = 0;

  1193.         err = AudioDeviceGetProperty(fDeviceID, 0, true, kAudioDevicePropertyLatency, &size, &value1);

  1194.         if (err != noErr)

  1195.             jack_log("AudioDeviceGetProperty kAudioDevicePropertyLatency error ");

  1196.         err = AudioDeviceGetProperty(fDeviceID, 0, true, kAudioDevicePropertySafetyOffset, &size, &value2);

  1197.         if (err != noErr)

  1198.             jack_log("AudioDeviceGetProperty kAudioDevicePropertySafetyOffset error ");

  1199. 

  1200.         port = fGraphManager->GetPort(port_index);

  1201.         port->SetAlias(alias);

  1202.         port->SetLatency(fEngineControl->fBufferSize + value1 + value2 + fCaptureLatency);

  1203.         fCapturePortList[i] = port_index;

  1204.     }

  1205. 

  1206.     port_flags = JackPortIsInput | JackPortIsPhysical | JackPortIsTerminal;

  1207. 

  1208.     for (int i = 0; i < fPlaybackChannels; i++) {

  1209. 

  1210.         err = AudioDeviceGetPropertyInfo(fDeviceID, i + 1, false, kAudioDevicePropertyChannelName, &size, &isWritable);

  1211.         if (err != noErr)

  1212.             jack_log("AudioDeviceGetPropertyInfo kAudioDevicePropertyChannelName error ");

  1213.         if (err == noErr && size > 0) {

  1214.             err = AudioDeviceGetProperty(fDeviceID, i + 1, false, kAudioDevicePropertyChannelName, &size, channel_name);

  1215.             if (err != noErr)

  1216.                 jack_log("AudioDeviceGetProperty kAudioDevicePropertyChannelName error ");

  1217.             snprintf(alias, sizeof(alias) - 1, "%s:%s:in_%s%u", fAliasName, fPlaybackDriverName, channel_name, i + 1);

  1218.         } else {

  1219.             snprintf(alias, sizeof(alias) - 1, "%s:%s:in%u", fAliasName, fPlaybackDriverName, i + 1);

  1220.         }

  1221. 

  1222.         snprintf(name, sizeof(name) - 1, "%s:playback_%d", fClientControl.fName, i + 1);

  1223. 

  1224.         if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, (JackPortFlags)port_flags, fEngineControl->fBufferSize)) == NO_PORT) {

  1225.             jack_error("Cannot register port for %s", name);

  1226.             return -1;

  1227.         }

  1228. 

  1229.         size = sizeof(UInt32);

  1230.         UInt32 value1 = 0;

  1231.         UInt32 value2 = 0;

  1232.         err = AudioDeviceGetProperty(fDeviceID, 0, false, kAudioDevicePropertyLatency, &size, &value1);

  1233.         if (err != noErr)

  1234.             jack_log("AudioDeviceGetProperty kAudioDevicePropertyLatency error ");

  1235.         err = AudioDeviceGetProperty(fDeviceID, 0, false, kAudioDevicePropertySafetyOffset, &size, &value2);

  1236.         if (err != noErr)

  1237.             jack_log("AudioDeviceGetProperty kAudioDevicePropertySafetyOffset error ");

  1238. 

  1239.         port = fGraphManager->GetPort(port_index);

  1240.         port->SetAlias(alias);

  1241.         // Add more latency if "async" mode is used...

  1242.         port->SetLatency(fEngineControl->fBufferSize + ((fEngineControl->fSyncMode) ? 0 : fEngineControl->fBufferSize * fIOUsage) + value1 + value2 + fPlaybackLatency);

  1243.         fPlaybackPortList[i] = port_index;

  1244. 

  1245.         // Monitor ports

  1246.         if (fWithMonitorPorts) {

  1247.             jack_log("Create monitor port ");

  1248.             snprintf(name, sizeof(name) - 1, "%s:monitor_%u", fClientControl.fName, i + 1);

  1249.             if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, fEngineControl->fBufferSize)) == NO_PORT) {

  1250.                 jack_error("Cannot register monitor port for %s", name);

  1251.                 return -1;

  1252.             } else {

  1253.                 port = fGraphManager->GetPort(port_index);

  1254.                 port->SetAlias(alias);

  1255.                 port->SetLatency(fEngineControl->fBufferSize);

  1256.                 fMonitorPortList[i] = port_index;

  1257.             }

  1258.         }

  1259.     }

  1260. 

  1261.     // Input buffers do no change : prepare them only once

  1262.     for (int i = 0; i < fCaptureChannels; i++) {

  1263.         fJackInputData->mBuffers[i].mData = GetInputBuffer(i);

  1264.     }

  1265. 

  1266.     return 0;

  1267. }

  1268. 

  1269. int JackCoreAudioDriver::Start()

  1270. {

  1271.     jack_log("JackCoreAudioDriver::Start");

  1272.     JackAudioDriver::Start();

  1273. /*

  1274. #ifdef MAC_OS_X_VERSION_10_5

  1275.     OSStatus err = AudioDeviceCreateIOProcID(fDeviceID, MeasureCallback, this, &fMesureCallbackID);

  1276. #else

  1277.     OSStatus err = AudioDeviceAddIOProc(fDeviceID, MeasureCallback, this);

  1278. #endif

  1279. */

  1280.     OSStatus err = AudioDeviceAddIOProc(fDeviceID, MeasureCallback, this);

  1281.     

  1282.     if (err != noErr)

  1283.         return -1;

  1284. 

  1285.     err = AudioOutputUnitStart(fAUHAL);

  1286.     if (err != noErr)

  1287.         return -1;

  1288. 

  1289.     if ((err = AudioDeviceStart(fDeviceID, MeasureCallback)) != noErr) {

  1290.         jack_error("Cannot start MeasureCallback");

  1291.         printError(err);

  1292.         return -1;

  1293.     }

  1294. 

  1295.     return 0;

  1296. }

  1297. 

  1298. int JackCoreAudioDriver::Stop()

  1299. {

  1300.     jack_log("JackCoreAudioDriver::Stop");

  1301.     AudioDeviceStop(fDeviceID, MeasureCallback);

  1302. /*

  1303. #ifdef MAC_OS_X_VERSION_10_5

  1304.     AudioDeviceDestroyIOProcID(fDeviceID, fMesureCallbackID);

  1305. #else

  1306.     AudioDeviceRemoveIOProc(fDeviceID, MeasureCallback);

  1307. #endif

  1308. */

  1309.     AudioDeviceRemoveIOProc(fDeviceID, MeasureCallback);

  1310.     return (AudioOutputUnitStop(fAUHAL) == noErr) ? 0 : -1;

  1311. }

  1312. 

  1313. int JackCoreAudioDriver::SetBufferSize(jack_nframes_t buffer_size)

  1314. {

  1315.     OSStatus err;

  1316.     UInt32 outSize = sizeof(UInt32);

  1317. 

  1318.     err = AudioDeviceSetProperty(fDeviceID, NULL, 0, false, kAudioDevicePropertyBufferFrameSize, outSize, &buffer_size);

  1319.     if (err != noErr) {

  1320.         jack_error("Cannot set buffer size %ld", buffer_size);

  1321.         printError(err);

  1322.         return -1;

  1323.     }

  1324. 

  1325.     JackAudioDriver::SetBufferSize(buffer_size); // never fails

  1326. 

  1327.     // Input buffers do no change : prepare them only once

  1328.     for (int i = 0; i < fCaptureChannels; i++) {

  1329.         fJackInputData->mBuffers[i].mNumberChannels = 1;

  1330.         fJackInputData->mBuffers[i].mDataByteSize = fEngineControl->fBufferSize * sizeof(float);

  1331.         fJackInputData->mBuffers[i].mData = GetInputBuffer(i);

  1332.     }

  1333. 

  1334.     return 0;

  1335. }

  1336. 

  1337. 

  1338. bool JackCoreAudioDriver::TakeHog(AudioDeviceID deviceID, bool isInput)

  1339. {

  1340.     pid_t hog_pid;

  1341.     OSStatus err;

  1342. 

  1343.     UInt32 propSize = sizeof(hog_pid);

  1344.     err = AudioDeviceGetProperty(deviceID, 0, isInput, kAudioDevicePropertyHogMode, &propSize, &hog_pid);

  1345.     if (err) {

  1346.         jack_error("Cannot read hog state...");

  1347.         printError(err);

  1348.     }

  1349. 

  1350.     if (hog_pid != getpid()) {

  1351.         hog_pid = getpid();

  1352.         err = AudioDeviceSetProperty(deviceID, 0, 0, isInput, kAudioDevicePropertyHogMode, propSize, &hog_pid);

  1353.         if (err != noErr) {

  1354.             jack_error("Can't hog device = %d because it's being hogged by another program", deviceID);

  1355.             return false;

  1356.         }

  1357.     }

  1358.     

  1359.     return true;

  1360. }

  1361. 

  1362. } // end of namespace

  1363. 

  1364. 

  1365. #ifdef __cplusplus

  1366. extern "C"

  1367. {

  1368. #endif

  1369. 

  1370.     SERVER_EXPORT jack_driver_desc_t* driver_get_descriptor() 

  1371.     {

  1372.         jack_driver_desc_t *desc;

  1373.         unsigned int i;

  1374.         desc = (jack_driver_desc_t*)calloc(1, sizeof(jack_driver_desc_t));

  1375. 

  1376.         strcpy(desc->name, "coreaudio");                                    // size MUST be less then JACK_DRIVER_NAME_MAX + 1

  1377.         strcpy(desc->desc, "Apple CoreAudio API based audio backend");      // size MUST be less then JACK_DRIVER_PARAM_DESC + 1

  1378.         

  1379.         desc->nparams = 15;

  1380.         desc->params = (jack_driver_param_desc_t*)calloc(desc->nparams, sizeof(jack_driver_param_desc_t));

  1381. 

  1382.         i = 0;

  1383.         strcpy(desc->params[i].name, "channels");

  1384.         desc->params[i].character = 'c';

  1385.         desc->params[i].type = JackDriverParamInt;

  1386.         desc->params[i].value.ui = 0;

  1387.         strcpy(desc->params[i].short_desc, "Maximum number of channels");

  1388.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1389. 

  1390.         i++;

  1391.         strcpy(desc->params[i].name, "inchannels");

  1392.         desc->params[i].character = 'i';

  1393.         desc->params[i].type = JackDriverParamInt;

  1394.         desc->params[i].value.ui = 0;

  1395.         strcpy(desc->params[i].short_desc, "Maximum number of input channels");

  1396.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1397. 

  1398.         i++;

  1399.         strcpy(desc->params[i].name, "outchannels");

  1400.         desc->params[i].character = 'o';

  1401.         desc->params[i].type = JackDriverParamInt;

  1402.         desc->params[i].value.ui = 0;

  1403.         strcpy(desc->params[i].short_desc, "Maximum number of output channels");

  1404.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1405. 

  1406.         i++;

  1407.         strcpy(desc->params[i].name, "capture");

  1408.         desc->params[i].character = 'C';

  1409.         desc->params[i].type = JackDriverParamString;

  1410.         strcpy(desc->params[i].value.str, "will take default CoreAudio input device");

  1411.         strcpy(desc->params[i].short_desc, "Provide capture ports. Optionally set CoreAudio device name");

  1412.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1413. 

  1414.         i++;

  1415.         strcpy(desc->params[i].name, "playback");

  1416.         desc->params[i].character = 'P';

  1417.         desc->params[i].type = JackDriverParamString;

  1418.         strcpy(desc->params[i].value.str, "will take default CoreAudio output device");

  1419.         strcpy(desc->params[i].short_desc, "Provide playback ports. Optionally set CoreAudio device name");

  1420.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1421. 

  1422.         i++;

  1423.         strcpy (desc->params[i].name, "monitor");

  1424.         desc->params[i].character = 'm';

  1425.         desc->params[i].type = JackDriverParamBool;

  1426.         desc->params[i].value.i = 0;

  1427.         strcpy(desc->params[i].short_desc, "Provide monitor ports for the output");

  1428.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1429. 

  1430.         i++;

  1431.         strcpy(desc->params[i].name, "duplex");

  1432.         desc->params[i].character = 'D';

  1433.         desc->params[i].type = JackDriverParamBool;

  1434.         desc->params[i].value.i = TRUE;

  1435.         strcpy(desc->params[i].short_desc, "Provide both capture and playback ports");

  1436.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1437. 

  1438.         i++;

  1439.         strcpy(desc->params[i].name, "rate");

  1440.         desc->params[i].character = 'r';

  1441.         desc->params[i].type = JackDriverParamUInt;

  1442.         desc->params[i].value.ui = 44100U;

  1443.         strcpy(desc->params[i].short_desc, "Sample rate");

  1444.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1445. 

  1446.         i++;

  1447.         strcpy(desc->params[i].name, "period");

  1448.         desc->params[i].character = 'p';

  1449.         desc->params[i].type = JackDriverParamUInt;

  1450.         desc->params[i].value.ui = 128U;

  1451.         strcpy(desc->params[i].short_desc, "Frames per period");

  1452.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1453. 

  1454.         i++;

  1455.         strcpy(desc->params[i].name, "device");

  1456.         desc->params[i].character = 'd';

  1457.         desc->params[i].type = JackDriverParamString;

  1458.         strcpy(desc->params[i].value.str, "will take default CoreAudio device name");

  1459.         strcpy(desc->params[i].short_desc, "CoreAudio device name");

  1460.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1461. 

  1462.         i++;

  1463.         strcpy(desc->params[i].name, "input-latency");

  1464.         desc->params[i].character = 'I';

  1465.         desc->params[i].type = JackDriverParamUInt;

  1466.         desc->params[i].value.i = 0;

  1467.         strcpy(desc->params[i].short_desc, "Extra input latency (frames)");

  1468.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1469. 

  1470.         i++;

  1471.         strcpy(desc->params[i].name, "output-latency");

  1472.         desc->params[i].character = 'O';

  1473.         desc->params[i].type = JackDriverParamUInt;

  1474.         desc->params[i].value.i = 0;

  1475.         strcpy(desc->params[i].short_desc, "Extra output latency (frames)");

  1476.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1477. 

  1478.         i++;

  1479.         strcpy(desc->params[i].name, "list-devices");

  1480.         desc->params[i].character = 'l';

  1481.         desc->params[i].type = JackDriverParamBool;

  1482.         desc->params[i].value.i = FALSE;

  1483.         strcpy(desc->params[i].short_desc, "Display available CoreAudio devices");

  1484.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1485.         

  1486.         i++;

  1487.         strcpy(desc->params[i].name, "async-latency");

  1488.         desc->params[i].character = 'L';

  1489.         desc->params[i].type = JackDriverParamUInt;

  1490.         desc->params[i].value.i = 100;

  1491.         strcpy(desc->params[i].short_desc, "Extra output latency in asynchronous mode (percent)");

  1492.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1493.         

  1494.         i++;

  1495.         strcpy(desc->params[i].name, "grain");

  1496.         desc->params[i].character = 'G';

  1497.         desc->params[i].type = JackDriverParamUInt;

  1498.         desc->params[i].value.i = 100;

  1499.         strcpy(desc->params[i].short_desc, "Computation grain in RT thread (percent)");

  1500.         strcpy(desc->params[i].long_desc, desc->params[i].short_desc);

  1501. 

  1502.         return desc;

  1503.     }

  1504. 

  1505.     SERVER_EXPORT Jack::JackDriverClientInterface* driver_initialize(Jack::JackLockedEngine* engine, Jack::JackSynchro* table, const JSList* params) 

  1506.     {

  1507.         jack_nframes_t srate = 44100;

  1508.         jack_nframes_t frames_per_interrupt = 128;

  1509.         int capture = FALSE;

  1510.         int playback = FALSE;

  1511.         int chan_in = 0;

  1512.         int chan_out = 0;

  1513.         bool monitor = false;

  1514.         const char* capture_driver_uid = "";

  1515.         const char* playback_driver_uid = "";

  1516.         const JSList *node;

  1517.         const jack_driver_param_t *param;

  1518.         jack_nframes_t systemic_input_latency = 0;

  1519.         jack_nframes_t systemic_output_latency = 0;

  1520.         int async_output_latency = 100;

  1521.         int computation_grain = -1;

  1522.     

  1523.         for (node = params; node; node = jack_slist_next(node)) {

  1524.             param = (const jack_driver_param_t *) node->data;

  1525.        

  1526.             switch (param->character) {

  1527. 

  1528.                 case 'd':

  1529.                     capture_driver_uid = strdup(param->value.str);

  1530.                     playback_driver_uid = strdup(param->value.str);

  1531.                     break;

  1532. 

  1533.                 case 'D':

  1534.                     capture = TRUE;

  1535.                     playback = TRUE;

  1536.                     break;

  1537. 

  1538.                 case 'c':

  1539.                     chan_in = chan_out = (int) param->value.ui;

  1540.                     break;

  1541. 

  1542.                 case 'i':

  1543.                     chan_in = (int) param->value.ui;

  1544.                     break;

  1545. 

  1546.                 case 'o':

  1547.                     chan_out = (int) param->value.ui;

  1548.                     break;

  1549. 

  1550.                 case 'C':

  1551.                     capture = TRUE;

  1552.                     if (strcmp(param->value.str, "none") != 0) {

  1553.                         capture_driver_uid = strdup(param->value.str);

  1554.                     }

  1555.                     break;

  1556. 

  1557.                 case 'P':

  1558.                     playback = TRUE;

  1559.                     if (strcmp(param->value.str, "none") != 0) {

  1560.                         playback_driver_uid = strdup(param->value.str);

  1561.                     }

  1562.                     break;

  1563. 

  1564.                 case 'm':

  1565.                     monitor = param->value.i;

  1566.                     break;

  1567. 

  1568.                 case 'r':

  1569.                     srate = param->value.ui;

  1570.                     break;

  1571. 

  1572.                 case 'p':

  1573.                     frames_per_interrupt = (unsigned int) param->value.ui;

  1574.                     break;

  1575. 

  1576.                 case 'I':

  1577.                     systemic_input_latency = param->value.ui;

  1578.                     break;

  1579. 

  1580.                 case 'O':

  1581.                     systemic_output_latency = param->value.ui;

  1582.                     break;

  1583. 

  1584.                 case 'l':

  1585.                     Jack::DisplayDeviceNames();

  1586.                     break;

  1587.                     

  1588.                 case 'L':

  1589.                     async_output_latency = param->value.ui;

  1590.                     break;

  1591.                     

  1592.                 case 'G':

  1593.                     computation_grain = param->value.ui;

  1594.                     break;

  1595.             }

  1596.         }

  1597. 

  1598.         /* duplex is the default */

  1599.         if (!capture && !playback) {

  1600.             capture = TRUE;

  1601.             playback = TRUE;

  1602.         }

  1603. 

  1604.         Jack::JackCoreAudioDriver* driver = new Jack::JackCoreAudioDriver("system", "coreaudio", engine, table);

  1605.         if (driver->Open(frames_per_interrupt, srate, capture, playback, chan_in, chan_out, monitor, capture_driver_uid, 

  1606.             playback_driver_uid, systemic_input_latency, systemic_output_latency, async_output_latency, computation_grain) == 0) {

  1607.             return driver;

  1608.         } else {

  1609.             delete driver;

  1610.             return NULL;

  1611.         }

  1612.     }

  1613. 

  1614. #ifdef __cplusplus

  1615. }

  1616. #endif

  1617.