JackCoreAudioDriver.cpp 102 KB
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/*
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include "JackCoreAudioDriver.h"
#include "JackEngineControl.h"
#include "JackMachThread.h"
#include "JackGraphManager.h"
#include "JackError.h"
#include "JackClientControl.h"
#include "JackDriverLoader.h"
#include "JackGlobals.h"
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#include "JackTools.h"
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#include "JackLockedEngine.h"
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#include "JackAC3Encoder.h"
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#include <sstream>
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#include <iostream>
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#include <CoreServices/CoreServices.h>
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#include <CoreFoundation/CFNumber.h>
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namespace Jack
{

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static void Print4CharCode(const char* msg, long c)
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{
    UInt32 __4CC_number = (c);
    char __4CC_string[5];
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    *((SInt32*)__4CC_string) = EndianU32_NtoB(__4CC_number);
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    __4CC_string[4] = 0;
    jack_log("%s'%s'", (msg), __4CC_string);
}

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static void PrintStreamDesc(AudioStreamBasicDescription *inDesc)
{
    jack_log("- - - - - - - - - - - - - - - - - - - -");
    jack_log("  Sample Rate:%f", inDesc->mSampleRate);
    jack_log("  Format ID:%.*s", (int) sizeof(inDesc->mFormatID), (char*)&inDesc->mFormatID);
    jack_log("  Format Flags:%lX", inDesc->mFormatFlags);
    jack_log("  Bytes per Packet:%ld", inDesc->mBytesPerPacket);
    jack_log("  Frames per Packet:%ld", inDesc->mFramesPerPacket);
    jack_log("  Bytes per Frame:%ld", inDesc->mBytesPerFrame);
    jack_log("  Channels per Frame:%ld", inDesc->mChannelsPerFrame);
    jack_log("  Bits per Channel:%ld", inDesc->mBitsPerChannel);
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    jack_log("- - - - - - - - - - - - - - - - - - - -");
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}

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static void printError(OSStatus err)
{
    switch (err) {
        case kAudioHardwareNoError:
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            jack_log("error code : kAudioHardwareNoError");
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            break;
        case kAudioConverterErr_FormatNotSupported:
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            jack_log("error code : kAudioConverterErr_FormatNotSupported");
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            break;
        case kAudioConverterErr_OperationNotSupported:
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            jack_log("error code : kAudioConverterErr_OperationNotSupported");
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            break;
        case kAudioConverterErr_PropertyNotSupported:
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            jack_log("error code : kAudioConverterErr_PropertyNotSupported");
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            break;
        case kAudioConverterErr_InvalidInputSize:
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            jack_log("error code : kAudioConverterErr_InvalidInputSize");
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            break;
        case kAudioConverterErr_InvalidOutputSize:
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            jack_log("error code : kAudioConverterErr_InvalidOutputSize");
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            break;
        case kAudioConverterErr_UnspecifiedError:
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            jack_log("error code : kAudioConverterErr_UnspecifiedError");
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            break;
        case kAudioConverterErr_BadPropertySizeError:
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            jack_log("error code : kAudioConverterErr_BadPropertySizeError");
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            break;
        case kAudioConverterErr_RequiresPacketDescriptionsError:
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            jack_log("error code : kAudioConverterErr_RequiresPacketDescriptionsError");
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            break;
        case kAudioConverterErr_InputSampleRateOutOfRange:
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            jack_log("error code : kAudioConverterErr_InputSampleRateOutOfRange");
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            break;
        case kAudioConverterErr_OutputSampleRateOutOfRange:
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            jack_log("error code : kAudioConverterErr_OutputSampleRateOutOfRange");
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            break;
        case kAudioHardwareNotRunningError:
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            jack_log("error code : kAudioHardwareNotRunningError");
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            break;
        case kAudioHardwareUnknownPropertyError:
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            jack_log("error code : kAudioHardwareUnknownPropertyError");
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            break;
        case kAudioHardwareIllegalOperationError:
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            jack_log("error code : kAudioHardwareIllegalOperationError");
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            break;
        case kAudioHardwareBadDeviceError:
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            jack_log("error code : kAudioHardwareBadDeviceError");
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            break;
        case kAudioHardwareBadStreamError:
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            jack_log("error code : kAudioHardwareBadStreamError");
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            break;
        case kAudioDeviceUnsupportedFormatError:
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            jack_log("error code : kAudioDeviceUnsupportedFormatError");
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            break;
        case kAudioDevicePermissionsError:
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            jack_log("error code : kAudioDevicePermissionsError");
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            break;
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        case kAudioHardwareBadObjectError:
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            jack_log("error code : kAudioHardwareBadObjectError");
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            break;
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        case kAudioHardwareUnsupportedOperationError:
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            jack_log("error code : kAudioHardwareUnsupportedOperationError");
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            break;
        default:
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            Print4CharCode("error code : unknown", err);
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            break;
    }
}

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static bool CheckAvailableDeviceName(const char* device_name, AudioDeviceID* device_id)
{
    UInt32 size;
    Boolean isWritable;
    int i, deviceNum;
    OSStatus err;

    err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &size, &isWritable);
    if (err != noErr) {
        return false;
    }

    deviceNum = size / sizeof(AudioDeviceID);
    AudioDeviceID devices[deviceNum];

    err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &size, devices);
    if (err != noErr) {
        return false;
    }

    for (i = 0; i < deviceNum; i++) {
        char device_name_aux[256];

        size = 256;
        err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceName, &size, device_name_aux);
        if (err != noErr) {
            return false;
        }

        if (strcmp(device_name_aux, device_name) == 0) {
            *device_id = devices[i];
            return true;
        }

    }

    return false;
}

static bool CheckAvailableDevice(AudioDeviceID device_id)
{
    UInt32 size;
    Boolean isWritable;
    int i, deviceNum;
    OSStatus err;

    err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &size, &isWritable);
    if (err != noErr) {
        return false;
    }

    deviceNum = size / sizeof(AudioDeviceID);
    AudioDeviceID devices[deviceNum];

    err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &size, devices);
    if (err != noErr) {
        return false;
    }

    for (i = 0; i < deviceNum; i++) {
        if (device_id == devices[i]) {
            return true;
        }

    }

    return false;
}


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static OSStatus DisplayDeviceNames()
{
    UInt32 size;
    Boolean isWritable;
    int i, deviceNum;
    OSStatus err;
    CFStringRef UIname;

    err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &size, &isWritable);
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    if (err != noErr) {
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        return err;
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    }
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    deviceNum = size / sizeof(AudioDeviceID);
    AudioDeviceID devices[deviceNum];

    err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &size, devices);
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    if (err != noErr) {
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        return err;
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    }
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    for (i = 0; i < deviceNum; i++) {
        char device_name[256];
        char internal_name[256];

        size = sizeof(CFStringRef);
        UIname = NULL;
        err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceUID, &size, &UIname);
        if (err == noErr) {
            CFStringGetCString(UIname, internal_name, 256, CFStringGetSystemEncoding());
        } else {
            goto error;
        }

        size = 256;
        err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceName, &size, device_name);
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        if (err != noErr) {
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            return err;
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        }
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        jack_info("Device ID = \'%d\' name = \'%s\', internal name = \'%s\' (to be used as -C, -P, or -d parameter)", devices[i], device_name, internal_name);
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    }

    return noErr;

error:
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    if (UIname != NULL) {
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        CFRelease(UIname);
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    }
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    return err;
}

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static CFStringRef GetDeviceName(AudioDeviceID id)
{
    UInt32 size = sizeof(CFStringRef);
    CFStringRef UIname;
    OSStatus err = AudioDeviceGetProperty(id, 0, false, kAudioDevicePropertyDeviceUID, &size, &UIname);
    return (err == noErr) ? UIname : NULL;
}

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static void ParseChannelList(const string& list, vector<int>& result)
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{
    stringstream ss(list);
    string token;
	int chan;

    while (ss >> token) {
        istringstream ins;
        ins.str(token);
        ins >> chan;
        result.push_back(chan);
    }
}

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OSStatus JackCoreAudioDriver::Render(void* inRefCon,
                                     AudioUnitRenderActionFlags* ioActionFlags,
                                     const AudioTimeStamp* inTimeStamp,
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                                     UInt32 inBusNumber,
                                     UInt32 inNumberFrames,
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                                     AudioBufferList* ioData)
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{
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    JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inRefCon;
    driver->fActionFags = ioActionFlags;
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    driver->fCurrentTime = inTimeStamp;
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    driver->fDriverOutputData = ioData;
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    // Setup threaded based log function et get RT thread parameters once...
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    if (set_threaded_log_function()) {
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        jack_log("JackCoreAudioDriver::Render : set_threaded_log_function");
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        JackMachThread::GetParams(pthread_self(), &driver->fEngineControl->fPeriod, &driver->fEngineControl->fComputation, &driver->fEngineControl->fConstraint);
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        if (driver->fComputationGrain > 0) {
            jack_log("JackCoreAudioDriver::Render : RT thread computation setup to %d percent of period", int(driver->fComputationGrain * 100));
            driver->fEngineControl->fComputation = driver->fEngineControl->fPeriod * driver->fComputationGrain;
        }
    }
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    // Signal waiting start function...
    driver->fState = true;
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    driver->CycleTakeBeginTime();
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    if (driver->Process() < 0) {
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        jack_error("Process error, stopping driver");
        driver->NotifyFailure(JackBackendError, "Process error, stopping driver");    // Message length limited to JACK_MESSAGE_SIZE
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        driver->Stop();
        kill(JackTools::GetPID(), SIGINT);
        return kAudioHardwareUnsupportedOperationError;
    } else {
        return noErr;
    }
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}

int JackCoreAudioDriver::Read()
{
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    if (fCaptureChannels > 0)  { // Calling AudioUnitRender with no input returns a '????' error (callback setting issue ??), so hack to avoid it here...
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        return (AudioUnitRender(fAUHAL, fActionFags, fCurrentTime, 1, fEngineControl->fBufferSize, fJackInputData) == noErr) ? 0 : -1;
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    } else {
        return 0;
    }
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}

int JackCoreAudioDriver::Write()
{
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    if (fAC3Encoder) {
    
        // AC3 encoding and SPDIF write
        jack_default_audio_sample_t* AC3_inputs[MAX_AC3_CHANNELS];
        jack_default_audio_sample_t* AC3_outputs[2];
        for (int i = 0; i < fPlaybackChannels; i++) {
            AC3_inputs[i] = GetOutputBuffer(i);
            // If not connected, clear the buffer
            if (fGraphManager->GetConnectionsNum(fPlaybackPortList[i]) == 0) {
                memset(AC3_inputs[i], 0, sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize);
            }
        }
        AC3_outputs[0] = (jack_default_audio_sample_t*)fDriverOutputData->mBuffers[0].mData;
        AC3_outputs[1] = (jack_default_audio_sample_t*)fDriverOutputData->mBuffers[1].mData;
        fAC3Encoder->Process(AC3_inputs, AC3_outputs, fEngineControl->fBufferSize);
        
    } else {
       
        // Standard write
        for (int i = 0; i < fPlaybackChannels; i++) {
            if (fGraphManager->GetConnectionsNum(fPlaybackPortList[i]) > 0) {
                jack_default_audio_sample_t* buffer = GetOutputBuffer(i);
                int size = sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize;
                memcpy((jack_default_audio_sample_t*)fDriverOutputData->mBuffers[i].mData, buffer, size);
                // Monitor ports
                if (fWithMonitorPorts && fGraphManager->GetConnectionsNum(fMonitorPortList[i]) > 0) {
                    memcpy(GetMonitorBuffer(i), buffer, size);
                }
            } else {
                memset((jack_default_audio_sample_t*)fDriverOutputData->mBuffers[i].mData, 0, sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize);
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            }
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        }
    }
    return 0;
}

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OSStatus JackCoreAudioDriver::SRNotificationCallback(AudioDeviceID inDevice,
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                                                    UInt32 inChannel,
                                                    Boolean	isInput,
                                                    AudioDevicePropertyID inPropertyID,
                                                    void* inClientData)
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{
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    JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;

    switch (inPropertyID) {

        case kAudioDevicePropertyNominalSampleRate: {
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            jack_log("JackCoreAudioDriver::SRNotificationCallback kAudioDevicePropertyNominalSampleRate");
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            // Check new sample rate
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            Float64 tmp_sample_rate;
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            UInt32 outSize = sizeof(Float64);
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            OSStatus err = AudioDeviceGetProperty(inDevice, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, &outSize, &tmp_sample_rate);
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            if (err != noErr) {
                jack_error("Cannot get current sample rate");
                printError(err);
            } else {
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                jack_log("JackCoreAudioDriver::SRNotificationCallback : checked sample rate = %f", tmp_sample_rate);
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            }
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            driver->fState = true;
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            break;
        }
    }

    return noErr;
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}
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OSStatus JackCoreAudioDriver::BSNotificationCallback(AudioDeviceID inDevice,
                                                     UInt32 inChannel,
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                                                     Boolean isInput,
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                                                     AudioDevicePropertyID inPropertyID,
                                                     void* inClientData)
{
    JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;
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    switch (inPropertyID) {
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        case kAudioDevicePropertyBufferFrameSize: {
            jack_log("JackCoreAudioDriver::BSNotificationCallback kAudioDevicePropertyBufferFrameSize");
            // Check new buffer size
            UInt32 tmp_buffer_size;
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            UInt32 outSize = sizeof(UInt32);
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            OSStatus err = AudioDeviceGetProperty(inDevice, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyBufferFrameSize, &outSize, &tmp_buffer_size);
            if (err != noErr) {
                jack_error("Cannot get current buffer size");
                printError(err);
            } else {
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                jack_log("JackCoreAudioDriver::BSNotificationCallback : checked buffer size = %d", tmp_buffer_size);
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            }
            driver->fState = true;
            break;
        }
    }
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    return noErr;
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}
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// A better implementation would possibly try to recover in case of hardware device change (see HALLAB HLFilePlayerWindowControllerAudioDevicePropertyListenerProc code)
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OSStatus JackCoreAudioDriver::AudioHardwareNotificationCallback(AudioHardwarePropertyID inPropertyID, void* inClientData)
{
    JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;

    switch (inPropertyID) {

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        case kAudioHardwarePropertyDevices: {
            jack_log("JackCoreAudioDriver::AudioHardwareNotificationCallback kAudioHardwarePropertyDevices");
            DisplayDeviceNames();
            AudioDeviceID captureID, playbackID;
            if (CheckAvailableDevice(driver->fDeviceID) ||
                (CheckAvailableDeviceName(driver->fCaptureUID, &captureID)
                && CheckAvailableDeviceName(driver->fPlaybackUID, &playbackID))) {
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            }
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            break;
        }
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    }

    return noErr;
}

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OSStatus JackCoreAudioDriver::DeviceNotificationCallback(AudioDeviceID inDevice,
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                                                        UInt32 inChannel,
                                                        Boolean	isInput,
                                                        AudioDevicePropertyID inPropertyID,
                                                        void* inClientData)
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{
    JackCoreAudioDriver* driver = (JackCoreAudioDriver*)inClientData;
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    switch (inPropertyID) {
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        case kAudioDevicePropertyDeviceIsRunning: {
            UInt32 isrunning = 0;
            UInt32 outsize = sizeof(UInt32);
            if (AudioDeviceGetProperty(driver->fDeviceID, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyDeviceIsRunning, &outsize, &isrunning) == noErr) {
                jack_log("JackCoreAudioDriver::DeviceNotificationCallback kAudioDevicePropertyDeviceIsRunning = %d", isrunning);
            }
            break;
        }
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        case kAudioDevicePropertyDeviceIsAlive: {
            UInt32 isalive = 0;
            UInt32 outsize = sizeof(UInt32);
            if (AudioDeviceGetProperty(driver->fDeviceID, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyDeviceIsAlive, &outsize, &isalive) == noErr) {
                jack_log("JackCoreAudioDriver::DeviceNotificationCallback kAudioDevicePropertyDeviceIsAlive = %d", isalive);
            }
            break;
        }

        case kAudioDevicePropertyDeviceHasChanged: {
            UInt32 hachanged = 0;
            UInt32 outsize = sizeof(UInt32);
            if (AudioDeviceGetProperty(driver->fDeviceID, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyDeviceHasChanged, &outsize, &hachanged) == noErr) {
                jack_log("JackCoreAudioDriver::DeviceNotificationCallback kAudioDevicePropertyDeviceHasChanged = %d", hachanged);
            }
            break;
        }

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        case kAudioDeviceProcessorOverload: {
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            jack_error("DeviceNotificationCallback kAudioDeviceProcessorOverload");
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            jack_time_t cur_time = GetMicroSeconds();
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            driver->NotifyXRun(cur_time, float(cur_time - driver->fBeginDateUst));   // Better this value than nothing...
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            break;
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        }
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        case kAudioDevicePropertyStreamConfiguration: {
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            jack_error("Cannot handle kAudioDevicePropertyStreamConfiguration : server will quit...");
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            driver->NotifyFailure(JackBackendError, "Another application has changed the device configuration");   // Message length limited to JACK_MESSAGE_SIZE
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            driver->CloseAUHAL();
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            kill(JackTools::GetPID(), SIGINT);
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            return kAudioHardwareUnsupportedOperationError;
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        }
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        case kAudioDevicePropertyNominalSampleRate: {
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            Float64 sample_rate = 0;
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            UInt32 outsize = sizeof(Float64);
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            OSStatus err = AudioDeviceGetProperty(driver->fDeviceID, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, &outsize, &sample_rate);
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            if (err != noErr) {
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                return kAudioHardwareUnsupportedOperationError;
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            }
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            char device_name[256];
            const char* digidesign_name = "Digidesign";
            driver->GetDeviceNameFromID(driver->fDeviceID, device_name);
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            if (sample_rate != driver->fEngineControl->fSampleRate) {
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               // Digidesign hardware, so "special" code : change the SR again here
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               if (strncmp(device_name, digidesign_name, 10) == 0) {
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                    jack_log("JackCoreAudioDriver::DeviceNotificationCallback Digidesign HW = %s", device_name);
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                    // Set sample rate again...
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                    sample_rate = driver->fEngineControl->fSampleRate;
                    err = AudioDeviceSetProperty(driver->fDeviceID, NULL, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, outsize, &sample_rate);
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                    if (err != noErr) {
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                        jack_error("Cannot set sample rate = %f", sample_rate);
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                        printError(err);
                    } else {
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                        jack_log("JackCoreAudioDriver::DeviceNotificationCallback : set sample rate = %f", sample_rate);
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                    }
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                    // Check new sample rate again...
                    outsize = sizeof(Float64);
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                    err = AudioDeviceGetProperty(inDevice, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, &outsize, &sample_rate);
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                    if (err != noErr) {
                        jack_error("Cannot get current sample rate");
                        printError(err);
                    } else {
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                        jack_log("JackCoreAudioDriver::DeviceNotificationCallback : checked sample rate = %f", sample_rate);
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                    }
                    return noErr;
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                } else {
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                    driver->NotifyFailure(JackBackendError, "Another application has changed the sample rate");    // Message length limited to JACK_MESSAGE_SIZE
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                    driver->CloseAUHAL();
                    kill(JackTools::GetPID(), SIGINT);
                    return kAudioHardwareUnsupportedOperationError;
                }
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            }
        }
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    }
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    return noErr;
}

OSStatus JackCoreAudioDriver::GetDeviceIDFromUID(const char* UID, AudioDeviceID* id)
{
    UInt32 size = sizeof(AudioValueTranslation);
    CFStringRef inIUD = CFStringCreateWithCString(NULL, UID, CFStringGetSystemEncoding());
    AudioValueTranslation value = { &inIUD, sizeof(CFStringRef), id, sizeof(AudioDeviceID) };

    if (inIUD == NULL) {
        return kAudioHardwareUnspecifiedError;
    } else {
        OSStatus res = AudioHardwareGetProperty(kAudioHardwarePropertyDeviceForUID, &size, &value);
        CFRelease(inIUD);
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        jack_log("JackCoreAudioDriver::GetDeviceIDFromUID %s %ld", UID, *id);
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        return (*id == kAudioDeviceUnknown) ? kAudioHardwareBadDeviceError : res;
    }
}

OSStatus JackCoreAudioDriver::GetDefaultDevice(AudioDeviceID* id)
{
    OSStatus res;
    UInt32 theSize = sizeof(UInt32);
    AudioDeviceID inDefault;
    AudioDeviceID outDefault;

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    if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &theSize, &inDefault)) != noErr) {
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        return res;
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    }
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    if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &theSize, &outDefault)) != noErr) {
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        return res;
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    }
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    jack_log("JackCoreAudioDriver::GetDefaultDevice : input = %ld output = %ld", inDefault, outDefault);
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    // Get the device only if default input and output are the same
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    if (inDefault != outDefault) {
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        jack_error("Default input and output devices are not the same !!");
        return kAudioHardwareBadDeviceError;
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    } else if (inDefault == 0) {
        jack_error("Default input and output devices are null !!");
        return kAudioHardwareBadDeviceError;
    } else {
        *id = inDefault;
        return noErr;
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    }
}

OSStatus JackCoreAudioDriver::GetDefaultInputDevice(AudioDeviceID* id)
{
    OSStatus res;
    UInt32 theSize = sizeof(UInt32);
    AudioDeviceID inDefault;

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    if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &theSize, &inDefault)) != noErr) {
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        return res;
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    }
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    if (inDefault == 0) {
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        jack_error("Error: default input device is 0, please select a correct one !!");
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        return -1;
    }
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    jack_log("JackCoreAudioDriver::GetDefaultInputDevice : input = %ld ", inDefault);
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    *id = inDefault;
    return noErr;
}

OSStatus JackCoreAudioDriver::GetDefaultOutputDevice(AudioDeviceID* id)
{
    OSStatus res;
    UInt32 theSize = sizeof(UInt32);
    AudioDeviceID outDefault;

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    if ((res = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &theSize, &outDefault)) != noErr) {
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        return res;
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    }
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    if (outDefault == 0) {
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        jack_error("Error: default output device is 0, please select a correct one !!");
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        return -1;
    }
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    jack_log("JackCoreAudioDriver::GetDefaultOutputDevice : output = %ld", outDefault);
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    *id = outDefault;
    return noErr;
}

OSStatus JackCoreAudioDriver::GetDeviceNameFromID(AudioDeviceID id, char* name)
{
    UInt32 size = 256;
    return AudioDeviceGetProperty(id, 0, false, kAudioDevicePropertyDeviceName, &size, name);
}

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OSStatus JackCoreAudioDriver::GetTotalChannels(AudioDeviceID device, int& channelCount, bool isInput)
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{
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    OSStatus err = noErr;
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    UInt32 outSize;
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    Boolean	outWritable;
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    channelCount = 0;
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    err = AudioDeviceGetPropertyInfo(device, 0, isInput, kAudioDevicePropertyStreamConfiguration, &outSize, &outWritable);
    if (err == noErr) {
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        int stream_count = outSize / sizeof(AudioBufferList);
        AudioBufferList bufferList[stream_count];
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        err = AudioDeviceGetProperty(device, 0, isInput, kAudioDevicePropertyStreamConfiguration, &outSize, bufferList);
        if (err == noErr) {
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            for (uint i = 0; i < bufferList->mNumberBuffers; i++) {
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                channelCount += bufferList->mBuffers[i].mNumberChannels;
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                //jack_info("GetTotalChannels stream = %d channels = %d", i, bufferList->mBuffers[i].mNumberChannels);
            }
        }
    }
    return err;
}

OSStatus JackCoreAudioDriver::GetStreamLatencies(AudioDeviceID device, bool isInput, vector<int>& latencies)
{
    OSStatus err = noErr;
    UInt32 outSize1, outSize2, outSize3;
    Boolean	outWritable;

    err = AudioDeviceGetPropertyInfo(device, 0, isInput, kAudioDevicePropertyStreams, &outSize1, &outWritable);
    if (err == noErr) {
        int stream_count = outSize1 / sizeof(UInt32);
        AudioStreamID streamIDs[stream_count];
        AudioBufferList bufferList[stream_count];
        UInt32 streamLatency;
        outSize2 = sizeof(UInt32);

        err = AudioDeviceGetProperty(device, 0, isInput, kAudioDevicePropertyStreams, &outSize1, streamIDs);
        if (err != noErr) {
            jack_error("GetStreamLatencies kAudioDevicePropertyStreams err = %d", err);
            return err;
        }

        err = AudioDeviceGetPropertyInfo(device, 0, isInput, kAudioDevicePropertyStreamConfiguration, &outSize3, &outWritable);
        if (err != noErr) {
            jack_error("GetStreamLatencies kAudioDevicePropertyStreamConfiguration err = %d", err);
            return err;
        }

        for (int i = 0; i < stream_count; i++) {
            err = AudioStreamGetProperty(streamIDs[i], 0, kAudioStreamPropertyLatency, &outSize2, &streamLatency);
            if (err != noErr) {
                jack_error("GetStreamLatencies kAudioStreamPropertyLatency err = %d", err);
                return err;
            }
            err = AudioDeviceGetProperty(device, 0, isInput, kAudioDevicePropertyStreamConfiguration, &outSize3, bufferList);
            if (err != noErr) {
                jack_error("GetStreamLatencies kAudioDevicePropertyStreamConfiguration err = %d", err);
                return err;
            }
            // Push 'channel' time the stream latency
            for (uint k = 0; k < bufferList->mBuffers[i].mNumberChannels; k++) {
                latencies.push_back(streamLatency);
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            }
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        }
    }
    return err;
}

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bool JackCoreAudioDriver::IsDigitalDevice(AudioDeviceID device)
{
    OSStatus err = noErr;
    UInt32 outSize1;
    bool is_digital = false;
    
    /* Get a list of all the streams on this device */
    AudioObjectPropertyAddress streamsAddress = { kAudioDevicePropertyStreams, kAudioDevicePropertyScopeOutput, kAudioObjectPropertyElementMaster };
    err = AudioObjectGetPropertyDataSize(device, &streamsAddress, 0, NULL, &outSize1);
    if (err != noErr) {
        jack_error("IsDigitalDevice kAudioDevicePropertyStreams err = %d", err);
        return false;
    }
    
    int stream_count = outSize1 / sizeof(AudioStreamID);
    AudioStreamID streamIDs[stream_count];
    
    err = AudioObjectGetPropertyData(device, &streamsAddress, 0, NULL, &outSize1, streamIDs);

    if (err != noErr) {
        jack_error("IsDigitalDevice kAudioDevicePropertyStreams list err = %d", err);
        return false;
    }
    
    AudioObjectPropertyAddress physicalFormatsAddress = { kAudioStreamPropertyAvailablePhysicalFormats, kAudioObjectPropertyScopeGlobal, 0 };
    
    for (int i = 0; i < stream_count ; i++) {
    
        /* Find a stream with a cac3 stream */
        int  format_num = 0;

        /* Retrieve all the stream formats supported by each output stream */
        err = AudioObjectGetPropertyDataSize(streamIDs[i], &physicalFormatsAddress, 0, NULL, &outSize1);
        
        if (err != noErr) {
            jack_error("IsDigitalDevice kAudioStreamPropertyAvailablePhysicalFormats err = %d", err);
            return false;
        }

        format_num = outSize1 / sizeof(AudioStreamRangedDescription);
        AudioStreamRangedDescription format_list[format_num];
      
        err = AudioObjectGetPropertyData(streamIDs[i], &physicalFormatsAddress, 0, NULL, &outSize1, format_list);
         
        if (err != noErr) {
            jack_error("IsDigitalDevice could not get the list of streamformats err = %d", err);
            return false;
        }

        /* Check if one of the supported formats is a digital format */
        for (int j = 0; j < format_num; j++) {
            if (format_list[j].mFormat.mFormatID == 'IAC3' ||
                format_list[j].mFormat.mFormatID == 'iac3' ||
                format_list[j].mFormat.mFormatID == kAudioFormat60958AC3 ||
                format_list[j].mFormat.mFormatID == kAudioFormatAC3 )
            {
                is_digital = true;
                break;
            }
        }
    }
       
    return is_digital;
}

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JackCoreAudioDriver::JackCoreAudioDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
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        : JackAudioDriver(name, alias, engine, table),
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        fAC3Encoder(NULL),
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        fJackInputData(NULL),
        fDriverOutputData(NULL),
        fPluginID(0),
        fState(false),
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        fHogged(false),
        fIOUsage(1.f),
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        fComputationGrain(-1.f),
        fClockDriftCompensate(false)
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{}
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JackCoreAudioDriver::~JackCoreAudioDriver()
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{
    delete fAC3Encoder;
}
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OSStatus JackCoreAudioDriver::DestroyAggregateDevice()
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{
    OSStatus osErr = noErr;
    AudioObjectPropertyAddress pluginAOPA;
    pluginAOPA.mSelector = kAudioPlugInDestroyAggregateDevice;
    pluginAOPA.mScope = kAudioObjectPropertyScopeGlobal;
    pluginAOPA.mElement = kAudioObjectPropertyElementMaster;
    UInt32 outDataSize;
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    if (fPluginID > 0) {
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        osErr = AudioObjectGetPropertyDataSize(fPluginID, &pluginAOPA, 0, NULL, &outDataSize);
        if (osErr != noErr) {
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            jack_error("DestroyAggregateDevice : AudioObjectGetPropertyDataSize error");
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            printError(osErr);
            return osErr;
        }
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        osErr = AudioObjectGetPropertyData(fPluginID, &pluginAOPA, 0, NULL, &outDataSize, &fDeviceID);
        if (osErr != noErr) {
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            jack_error("DestroyAggregateDevice : AudioObjectGetPropertyData error");
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            printError(osErr);
            return osErr;
        }
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    }
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    return noErr;
}
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OSStatus JackCoreAudioDriver::CreateAggregateDevice(AudioDeviceID captureDeviceID, AudioDeviceID playbackDeviceID, jack_nframes_t samplerate, AudioDeviceID* outAggregateDevice)
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{
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    OSStatus err = noErr;
    AudioObjectID sub_device[32];
    UInt32 outSize = sizeof(sub_device);
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    err = AudioDeviceGetProperty(captureDeviceID, 0, kAudioDeviceSectionGlobal, kAudioAggregateDevicePropertyActiveSubDeviceList, &outSize, sub_device);
    vector<AudioDeviceID> captureDeviceIDArray;
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    if (err != noErr) {
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        jack_log("JackCoreAudioDriver::CreateAggregateDevice : input device does not have subdevices");
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        captureDeviceIDArray.push_back(captureDeviceID);
    } else {
        int num_devices = outSize / sizeof(AudioObjectID);
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        jack_log("JackCoreAudioDriver::CreateAggregateDevice :Input device has %d subdevices", num_devices);
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        for (int i = 0; i < num_devices; i++) {
            captureDeviceIDArray.push_back(sub_device[i]);
        }
    }
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    err = AudioDeviceGetProperty(playbackDeviceID, 0, kAudioDeviceSectionGlobal, kAudioAggregateDevicePropertyActiveSubDeviceList, &outSize, sub_device);
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    vector<AudioDeviceID> playbackDeviceIDArray;
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    if (err != noErr) {
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        jack_log("JackCoreAudioDriver::CreateAggregateDevice : output device does not have subdevices");
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        playbackDeviceIDArray.push_back(playbackDeviceID);
    } else {
        int num_devices = outSize / sizeof(AudioObjectID);
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        jack_log("JackCoreAudioDriver::CreateAggregateDevice : output device has %d subdevices", num_devices);
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        for (int i = 0; i < num_devices; i++) {
            playbackDeviceIDArray.push_back(sub_device[i]);
        }
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    }
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    return CreateAggregateDeviceAux(captureDeviceIDArray, playbackDeviceIDArray, samplerate, outAggregateDevice);
}

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OSStatus JackCoreAudioDriver::CreateAggregateDeviceAux(vector<AudioDeviceID> captureDeviceID, vector<AudioDeviceID> playbackDeviceID, jack_nframes_t samplerate, AudioDeviceID* outAggregateDevice)
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{
    OSStatus osErr = noErr;
    UInt32 outSize;
    Boolean outWritable;
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    // Prepare sub-devices for clock drift compensation
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    // Workaround for bug in the HAL : until 10.6.2
    AudioObjectPropertyAddress theAddressOwned = { kAudioObjectPropertyOwnedObjects, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster };
    AudioObjectPropertyAddress theAddressDrift = { kAudioSubDevicePropertyDriftCompensation, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster };
    UInt32 theQualifierDataSize = sizeof(AudioObjectID);
    AudioClassID inClass = kAudioSubDeviceClassID;
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    void* theQualifierData = &inClass;
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    UInt32 subDevicesNum = 0;
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    //---------------------------------------------------------------------------
    // Setup SR of both devices otherwise creating AD may fail...
    //---------------------------------------------------------------------------
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    UInt32 keptclockdomain = 0;
    UInt32 clockdomain = 0;
    outSize = sizeof(UInt32);
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    bool need_clock_drift_compensation = false;
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    for (UInt32 i = 0; i < captureDeviceID.size(); i++) {
        if (SetupSampleRateAux(captureDeviceID[i], samplerate) < 0) {
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            jack_error("CreateAggregateDevice : cannot set SR of input device");
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        } else  {
            // Check clock domain
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            osErr = AudioDeviceGetProperty(captureDeviceID[i], 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyClockDomain, &outSize, &clockdomain);
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            if (osErr != 0) {
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                jack_error("CreateAggregateDevice : kAudioDevicePropertyClockDomain error");
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                printError(osErr);
            } else {
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                keptclockdomain = (keptclockdomain == 0) ? clockdomain : keptclockdomain;
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                jack_log("JackCoreAudioDriver::CreateAggregateDevice : input clockdomain = %d", clockdomain);
                if (clockdomain != 0 && clockdomain != keptclockdomain) {
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                    jack_error("CreateAggregateDevice : devices do not share the same clock!! clock drift compensation would be needed...");
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                    need_clock_drift_compensation = true;
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                }
            }
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        }
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    }
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    for (UInt32 i = 0; i < playbackDeviceID.size(); i++) {
        if (SetupSampleRateAux(playbackDeviceID[i], samplerate) < 0) {
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            jack_error("CreateAggregateDevice : cannot set SR of output device");
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        } else {
            // Check clock domain
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            osErr = AudioDeviceGetProperty(playbackDeviceID[i], 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyClockDomain, &outSize, &clockdomain);
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            if (osErr != 0) {
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                jack_error("CreateAggregateDevice : kAudioDevicePropertyClockDomain error");
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                printError(osErr);
            } else {
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                keptclockdomain = (keptclockdomain == 0) ? clockdomain : keptclockdomain;
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                jack_log("JackCoreAudioDriver::CreateAggregateDevice : output clockdomain = %d", clockdomain);
                if (clockdomain != 0 && clockdomain != keptclockdomain) {
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                    jack_error("CreateAggregateDevice : devices do not share the same clock!! clock drift compensation would be needed...");
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                    need_clock_drift_compensation = true;
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                }
            }
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        }
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    }
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    // If no valid clock domain was found, then assume we have to compensate...
    if (keptclockdomain == 0) {
        need_clock_drift_compensation = true;
    }
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    //---------------------------------------------------------------------------
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    // Start to create a new aggregate by getting the base audio hardware plugin
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    //---------------------------------------------------------------------------
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    char device_name[256];
    for (UInt32 i = 0; i < captureDeviceID.size(); i++) {
        GetDeviceNameFromID(captureDeviceID[i], device_name);
        jack_info("Separated input = '%s' ", device_name);
    }
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    for (UInt32 i = 0; i < playbackDeviceID.size(); i++) {
        GetDeviceNameFromID(playbackDeviceID[i], device_name);
        jack_info("Separated output = '%s' ", device_name);
    }
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    osErr = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyPlugInForBundleID, &outSize, &outWritable);
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    if (osErr != noErr) {
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        jack_error("CreateAggregateDevice : AudioHardwareGetPropertyInfo kAudioHardwarePropertyPlugInForBundleID error");
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        printError(osErr);
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        return osErr;
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    }
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    AudioValueTranslation pluginAVT;

    CFStringRef inBundleRef = CFSTR("com.apple.audio.CoreAudio");
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    pluginAVT.mInputData = &inBundleRef;
    pluginAVT.mInputDataSize = sizeof(inBundleRef);
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    pluginAVT.mOutputData = &fPluginID;
    pluginAVT.mOutputDataSize = sizeof(fPluginID);
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    osErr = AudioHardwareGetProperty(kAudioHardwarePropertyPlugInForBundleID, &outSize, &pluginAVT);
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    if (osErr != noErr) {
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        jack_error("CreateAggregateDevice : AudioHardwareGetProperty kAudioHardwarePropertyPlugInForBundleID error");
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        printError(osErr);
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        return osErr;
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    }
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    //-------------------------------------------------
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    // Create a CFDictionary for our aggregate device
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    //-------------------------------------------------
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    CFMutableDictionaryRef aggDeviceDict = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

    CFStringRef AggregateDeviceNameRef = CFSTR("JackDuplex");
    CFStringRef AggregateDeviceUIDRef = CFSTR("com.grame.JackDuplex");
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    // add the name of the device to the dictionary
    CFDictionaryAddValue(aggDeviceDict, CFSTR(kAudioAggregateDeviceNameKey), AggregateDeviceNameRef);

    // add our choice of UID for the aggregate device to the dictionary
    CFDictionaryAddValue(aggDeviceDict, CFSTR(kAudioAggregateDeviceUIDKey), AggregateDeviceUIDRef);
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    // add a "private aggregate key" to the dictionary
    int value = 1;
    CFNumberRef AggregateDeviceNumberRef = CFNumberCreate(NULL, kCFNumberIntType, &value);
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    SInt32 system;
    Gestalt(gestaltSystemVersion, &system);
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    jack_log("JackCoreAudioDriver::CreateAggregateDevice : system version = %x limit = %x", system, 0x00001054);
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    // Starting with 10.5.4 systems, the AD can be internal... (better)
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    if (system < 0x00001054) {
        jack_log("JackCoreAudioDriver::CreateAggregateDevice : public aggregate device....");
    } else {
        jack_log("JackCoreAudioDriver::CreateAggregateDevice : private aggregate device....");
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        CFDictionaryAddValue(aggDeviceDict, CFSTR(kAudioAggregateDeviceIsPrivateKey), AggregateDeviceNumberRef);
    }
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    // Prepare sub-devices for clock drift compensation
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    CFMutableArrayRef subDevicesArrayClock = NULL;
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    /*
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