drivers/audio/AudioOutputDeviceCoreAudio.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2009 - 2013 Grigor Iliev                                *
 *                                                                         *
 *   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., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "AudioOutputDeviceCoreAudio.h"

#include "../../common/global_private.h"

namespace LinuxSampler {

    void AudioOutputDeviceCoreAudio::AudioQueueListener (
            void *inUserData, AudioQueueRef inAQ, AudioQueuePropertyID inID
    ) {
        switch(inID) {
            case kAudioQueueProperty_IsRunning:
                
                break;
            case kAudioQueueProperty_CurrentDevice:
                
                break;
        }
    }

    void AudioOutputDeviceCoreAudio::HandleOutputBuffer (
        void                 *aqData,
        AudioQueueRef        inAQ,
        AudioQueueBufferRef  inBuffer
    ) {
        AQPlayerState* pAqData = (AQPlayerState*) aqData;
        if (atomic_read(&(pAqData->mIsRunning)) == 0) {
            AudioQueueFlush(pAqData->mQueue);
            AudioQueueStop (pAqData->mQueue, true);
            return;
        }

        if(atomic_read(&(pAqData->pDevice->restartQueue))) return;

        uint bufferSize = pAqData->pDevice->uiBufferSize;

        // let all connected engines render 'fragmentSize' sample points
        pAqData->pDevice->RenderAudio(bufferSize);

        Float32* pDataBuf = (Float32*)(inBuffer->mAudioData);

        uint uiCoreAudioChannels = pAqData->pDevice->uiCoreAudioChannels;
        for (int c = 0; c < uiCoreAudioChannels; c++) {
            float* in  = pAqData->pDevice->Channels[c]->Buffer();
            for (int i = 0, o = c; i < bufferSize; i++ , o += uiCoreAudioChannels) {
                pDataBuf[o] = in[i];
            }
        }

        inBuffer->mAudioDataByteSize = (uiCoreAudioChannels * 4) * bufferSize;

        OSStatus res = AudioQueueEnqueueBuffer(pAqData->mQueue, inBuffer, 0, NULL);
        if(res) std::cerr << "AudioQueueEnqueueBuffer: Error " << res << std::endl;
    }

    void AudioOutputDeviceCoreAudio::DeviceChanged() {
        dmsg(1,("Restarting audio queue..."));
        atomic_set(&restartQueue, 1);
    }

    AudioOutputDeviceCoreAudio::AudioOutputDeviceCoreAudio (
                    std::map<String,DeviceCreationParameter*> Parameters
    ) : AudioOutputDevice(Parameters), Thread(true, true, 1, 0), CurrentDevice(0) {

        dmsg(2,("AudioOutputDeviceCoreAudio::AudioOutputDeviceCoreAudio()\n"));
        if(CAAudioDeviceListModel::GetModel()->GetOutputDeviceCount() < 1) {
            throw Exception("No audio output device found");
        }
        atomic_set(&pausedNew, 0);
        pausedOld = 0;
        atomic_set(&restartQueue, 0);

        uiCoreAudioChannels = ((DeviceCreationParameterInt*)Parameters["CHANNELS"])->ValueAsInt();
        uint samplerate     = ((DeviceCreationParameterInt*)Parameters["SAMPLERATE"])->ValueAsInt();
        uiBufferNumber      = ((DeviceCreationParameterInt*)Parameters["BUFFERS"])->ValueAsInt();
        uiBufferSize        = ((DeviceCreationParameterInt*)Parameters["BUFFERSIZE"])->ValueAsInt();
        int device = 0;
        try { device = ((ParameterDevice*)Parameters["DEVICE"])->GetDeviceIndex(); }
        catch(Exception x) { }

        CurrentDevice = CAAudioDeviceListModel::GetModel()->GetOutputDevice(device);
        CurrentDevice.AddListener(this);

        memset (&aqPlayerState.mDataFormat, 0, sizeof(AudioStreamBasicDescription));

        aqPlayerState.mDataFormat.mSampleRate = samplerate;
        aqPlayerState.mDataFormat.mFormatID = kAudioFormatLinearPCM;

        aqPlayerState.mDataFormat.mFormatFlags =
            kLinearPCMFormatFlagIsFloat | kLinearPCMFormatFlagIsPacked;

        int samplesize = 4;
        aqPlayerState.mDataFormat.mBytesPerPacket = uiCoreAudioChannels * samplesize;
        aqPlayerState.mDataFormat.mFramesPerPacket = 1;
        aqPlayerState.mDataFormat.mBytesPerFrame = uiCoreAudioChannels * samplesize;
        aqPlayerState.mDataFormat.mChannelsPerFrame = uiCoreAudioChannels;
        aqPlayerState.mDataFormat.mBitsPerChannel = 8 * samplesize;
        aqPlayerState.mDataFormat.mReserved = 0;

        aqPlayerState.mBuffers = new AudioQueueBufferRef[uiBufferNumber];

        aqPlayerState.bufferByteSize =
                MaxSamplesPerCycle() * aqPlayerState.mDataFormat.mBytesPerFrame;

        aqPlayerState.mNumPacketsToRead = MaxSamplesPerCycle();

        aqPlayerState.pDevice = this;
        aqPlayerState.mQueue = NULL;

        uint fragmentSize = MaxSamplesPerCycle();
        // create audio channels for this audio device to which the sampler engines can write to
        for (int i = 0; i < uiCoreAudioChannels; i++) {
            this->Channels.push_back(new AudioChannel(i, fragmentSize));
        }

        StartThread();

        if (!((DeviceCreationParameterBool*)Parameters["ACTIVE"])->ValueAsBool()) {
                Stop();
        }
    }

    AudioOutputDeviceCoreAudio::~AudioOutputDeviceCoreAudio() {
        atomic_set(&(aqPlayerState.mIsRunning), 0);
        {
            LockGuard lock(destroyMutex);
            AudioQueueDispose(aqPlayerState.mQueue, true);
        }
        delete [] aqPlayerState.mBuffers;

        CurrentDevice.RemoveListener(this);
    }

    String AudioOutputDeviceCoreAudio::Name() {
        return "COREAUDIO";
    }

    String AudioOutputDeviceCoreAudio::Description() {
        return "Apple CoreAudio";
    }

    String AudioOutputDeviceCoreAudio::Version() {
       String s = "$Revision$";
       return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
    }

    void AudioOutputDeviceCoreAudio::Play() {
        atomic_set(&pausedNew, 0);
    }

    bool AudioOutputDeviceCoreAudio::IsPlaying() {
        return !atomic_read(&pausedNew);
    }

    void AudioOutputDeviceCoreAudio::Stop() {
        atomic_set(&pausedNew, 1);
    }

    uint AudioOutputDeviceCoreAudio::MaxSamplesPerCycle() {
        return uiBufferSize;
    }

    uint AudioOutputDeviceCoreAudio::SampleRate() {
        return aqPlayerState.mDataFormat.mSampleRate;
    }

    String AudioOutputDeviceCoreAudio::Driver() {
        return Name();
    }

    AudioChannel* AudioOutputDeviceCoreAudio::CreateChannel(uint ChannelNr) {
        // just create a mix channel
        return new AudioChannel(ChannelNr, Channel(ChannelNr % uiCoreAudioChannels));
    }

    void AudioOutputDeviceCoreAudio::FillBuffers() {
        for (int i = 0; i < uiBufferNumber; ++i) {
            HandleOutputBuffer (
                &aqPlayerState,
                aqPlayerState.mQueue,
                aqPlayerState.mBuffers[i]
            );
        }
    }

    void AudioOutputDeviceCoreAudio::PrimeAudioQueue() {
        OSStatus res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL);
        if(res) {
            String s = String("AudioQueuePrime: Error ") + ToString(res);
            throw Exception(s);
        }
    }

    void AudioOutputDeviceCoreAudio::CreateAndStartAudioQueue() throw(Exception) {
        OSStatus res = AudioQueueNewOutput (
            &aqPlayerState.mDataFormat,
            HandleOutputBuffer,
            &aqPlayerState,
            CFRunLoopGetCurrent(),
            kCFRunLoopCommonModes,
            0,
            &aqPlayerState.mQueue
        );

        if(res) {
            String s = String("AudioQueueNewOutput: Error ") + ToString(res);
            throw Exception(s);
        }

        CFStringRef devUID = CFStringCreateWithCString (
            NULL, CurrentDevice.GetUID().c_str(), kCFStringEncodingASCII
        );
        res = AudioQueueSetProperty (
            aqPlayerState.mQueue,
            kAudioQueueProperty_CurrentDevice,
            &devUID, sizeof(CFStringRef)
        );
        CFRelease(devUID);

        if(res) {
            String s = String("Failed to set audio device: ") + ToString(res);
            throw Exception(s);
        }

        for (int i = 0; i < uiBufferNumber; ++i) {
            res = AudioQueueAllocateBuffer (
                aqPlayerState.mQueue,
                aqPlayerState.bufferByteSize,
                &aqPlayerState.mBuffers[i]
            );

            if(res) {
                String s = String("AudioQueueAllocateBuffer: Error ");
                throw Exception(s + ToString(res));
            }
        }

        res = AudioQueueAddPropertyListener (
            aqPlayerState.mQueue,
            kAudioQueueProperty_CurrentDevice,
            AudioQueueListener,
            NULL
        );
        if(res) std::cerr << "Failed to register device change listener: " << res << std::endl;

        res = AudioQueueAddPropertyListener (
            aqPlayerState.mQueue,
            kAudioQueueProperty_IsRunning,
            AudioQueueListener,
            NULL
        );
        if(res) std::cerr << "Failed to register running listener: " << res << std::endl;

        Float32 gain = 1.0;

        res = AudioQueueSetParameter (
            aqPlayerState.mQueue,
            kAudioQueueParam_Volume,
            gain
        );

        if(res) std::cerr << "AudioQueueSetParameter: Error " << res << std::endl;

        atomic_set(&(aqPlayerState.mIsRunning), 1);
        FillBuffers();
        PrimeAudioQueue();

        res = AudioQueueStart(aqPlayerState.mQueue, NULL);
        if(res) {
            String s = String("AudioQueueStart: Error ") + ToString(res);
            throw Exception(s);
        }
    }

    void AudioOutputDeviceCoreAudio::DestroyAudioQueue() {
        AudioQueueFlush(aqPlayerState.mQueue);
        AudioQueueStop (aqPlayerState.mQueue, true);
        AudioQueueDispose(aqPlayerState.mQueue, true);
        aqPlayerState.mQueue = NULL;
    }

    /**
     * Entry point for the thread.
     */
    int AudioOutputDeviceCoreAudio::Main() {
        dmsg(1,("CoreAudio thread started\n"));
        OSStatus res;
        if(aqPlayerState.mQueue == NULL) {
            /*
             * Need to be run from this thread because of CFRunLoopGetCurrent()
             * which returns the CFRunLoop object for the current thread.
             */
            try { CreateAndStartAudioQueue(); }
            catch(Exception e) {
                std::cerr << "Failed to star audio queue: " + e.Message() << std::endl;
                return 0;
            }
        }

        {
            LockGuard lock(destroyMutex);
            do {
                if(atomic_read(&pausedNew) != pausedOld) {
                    pausedOld = atomic_read(&pausedNew);

                    if(pausedOld) {
                        res = AudioQueuePause(aqPlayerState.mQueue);
                        if(res) std::cerr << "AudioQueuePause: Error " << res << std::endl;
                    } else {
                        res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL);
                        if(res) std::cerr << "AudioQueuePrime: Error " << res << std::endl;
                        res = AudioQueueStart(aqPlayerState.mQueue, NULL);
                        if(res) std::cerr << "AudioQueueStart: Error " << res << std::endl;
                    }
                }

                if(atomic_read(&restartQueue)) {
                    DestroyAudioQueue();
                    CreateAndStartAudioQueue();
                    atomic_set(&restartQueue, 0);
                    dmsg(1,("Audio queue restarted"));
                }
            
                CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.2, false);
            } while (atomic_read(&(aqPlayerState.mIsRunning)));
        }

        dmsg(2,("CoreAudio thread stopped\n"));

        pthread_exit(NULL);
        return 0;
    }


// *************** ParameterDevice ***************
// *

    AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice() : DeviceCreationParameterString() {
        InitWithDefault(); // use default device
    }

    AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice(String s)
            throw (Exception) : DeviceCreationParameterString(s) {
    }

    String AudioOutputDeviceCoreAudio::ParameterDevice::Description() {
        return "Output device to be used";
    }

    bool AudioOutputDeviceCoreAudio::ParameterDevice::Fix() {
        return true;
    }

    bool AudioOutputDeviceCoreAudio::ParameterDevice::Mandatory() {
        return false;
    }

    std::map<String,DeviceCreationParameter*>
    AudioOutputDeviceCoreAudio::ParameterDevice::DependsAsParameters() {
        return std::map<String,DeviceCreationParameter*>(); // no dependencies
    }

    optional<String>
    AudioOutputDeviceCoreAudio::ParameterDevice::DefaultAsString(std::map<String,String> Parameters) {
        CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
        if (devs->GetOutputDeviceCount() < 1) {
            throw Exception("AudioOutputDeviceCoreAudio: Can't find any output device");
        }
        UInt32 idx = devs->GetOutputDeviceIndex(devs->GetDefaultOutputDeviceID());
        return CreateDeviceName(idx);
    }

    std::vector<String>
    AudioOutputDeviceCoreAudio::ParameterDevice::PossibilitiesAsString(std::map<String,String> Parameters) {
        std::vector<String> deviceNames;

        CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
        for(int i = 0; i < devs->GetOutputDeviceCount(); i++) {
            if(devs->GetOutputDevice(i).GetChannelNumber() < 1) continue;

            deviceNames.push_back(CreateDeviceName(i));
        }

        return deviceNames;
    }

    String AudioOutputDeviceCoreAudio::ParameterDevice::CreateDeviceName(int devIndex) {
        CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
        // Note that the space " " is used as delimiter to obtain the
        // device index. See GetDeviceIndex()
        return ToString(devIndex + 1) + " " + devs->GetOutputDevice(devIndex).GetName();
    }

    void AudioOutputDeviceCoreAudio::ParameterDevice::OnSetValue(String s) throw (Exception) {
        // not posssible, as parameter is fix
    }

    String AudioOutputDeviceCoreAudio::ParameterDevice::Name() {
        return "DEVICE";
    }

    int AudioOutputDeviceCoreAudio::ParameterDevice::GetDeviceIndex() {
        String s = ValueAsString();
        if(s.empty()) return -1;
        int n = s.find(' ');
        s = s.substr(0, n);
        return ToInt(s) - 1;
    }

// *************** ParameterSampleRate ***************
// *

    AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate() :
                AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() {

    }

    AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate(String s) :
                AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(s) {
        
    }

    std::map<String,DeviceCreationParameter*>
    AudioOutputDeviceCoreAudio::ParameterSampleRate::DependsAsParameters() {
        static ParameterDevice device;
        std::map<String,DeviceCreationParameter*> dependencies;
        dependencies[device.Name()] = &device;
        return dependencies;
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) {
        dmsg(2,("AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt()\n"));
        ParameterDevice dev(Parameters["DEVICE"]);
        int samplerate = 44100;

        try {
            int idx = dev.GetDeviceIndex();

            CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
            samplerate = devs->GetOutputDevice(idx).GetDefaultSamplerate();
        } catch(Exception e) { }

        return samplerate;
    }

    std::vector<int>
    AudioOutputDeviceCoreAudio::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) {
        ParameterDevice dev(Parameters["DEVICE"]);
        std::vector<int> srates;

        try {
            int idx = dev.GetDeviceIndex();
            CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
            srates = devs->GetOutputDevice(idx).GetNominalSamplerates();
        } catch(Exception x) { }

        return srates;
    }


// *************** ParameterChannels ***************
// *

    AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels() :
                    AudioOutputDevice::ParameterChannels::ParameterChannels() {
        
    }

    AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels(String s) :
                    AudioOutputDevice::ParameterChannels::ParameterChannels(s) {
        
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) {
        dmsg(2,("AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt()\n"));
        ParameterDevice dev(Parameters["DEVICE"]);
        int chns = 2;

        try {
            int idx = dev.GetDeviceIndex();
            CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
            chns = devs->GetOutputDevice(idx).GetChannelNumber();
        } catch(Exception e) { }

        return chns;
    }

    std::vector<int>
    AudioOutputDeviceCoreAudio::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) {
        ParameterDevice dev(Parameters["DEVICE"]);
        std::vector<int> chns;

        try {
            int idx = dev.GetDeviceIndex();
            CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
            for(int i = 1; i <= devs->GetOutputDevice(idx).GetChannelNumber(); i++) {
                chns.push_back(i);
            }
        } catch(Exception x) { }

        return chns;
    }

// *************** ParameterBuffers ***************
// *

    AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers() : DeviceCreationParameterInt() {
        InitWithDefault();
    }

    AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers(String s)
            throw (Exception) : DeviceCreationParameterInt(s) {
    }

    String AudioOutputDeviceCoreAudio::ParameterBuffers::Description() {
        return "Number of audio buffer";
    }

    bool AudioOutputDeviceCoreAudio::ParameterBuffers::Fix() {
        return true;
    }

    bool AudioOutputDeviceCoreAudio::ParameterBuffers::Mandatory() {
        return false;
    }

    std::map<String,DeviceCreationParameter*>
    AudioOutputDeviceCoreAudio::ParameterBuffers::DependsAsParameters() {
        return std::map<String,DeviceCreationParameter*>();
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterBuffers::DefaultAsInt(std::map<String,String> Parameters) {
        return 3;
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMinAsInt(std::map<String,String> Parameters) {
        return 2;
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMaxAsInt(std::map<String,String> Parameters) {
        return 16;
    }

    std::vector<int>
    AudioOutputDeviceCoreAudio::ParameterBuffers::PossibilitiesAsInt(std::map<String,String> Parameters) {
        return std::vector<int>();
    }

    void AudioOutputDeviceCoreAudio::ParameterBuffers::OnSetValue(int i) throw (Exception) {
        // not posssible, as parameter is fix
    }

    String AudioOutputDeviceCoreAudio::ParameterBuffers::Name() {
        return "BUFFERS";
    }

// *************** ParameterBufferSize ***************
// *

    AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize() : DeviceCreationParameterInt() {
        InitWithDefault();
    }

    AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize(String s)
            throw (Exception) : DeviceCreationParameterInt(s) {
    }

    String AudioOutputDeviceCoreAudio::ParameterBufferSize::Description() {
        return "Size of the audio buffer in sample frames";
    }

    bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Fix() {
        return true;
    }

    bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Mandatory() {
        return false;
    }

    std::map<String,DeviceCreationParameter*>
    AudioOutputDeviceCoreAudio::ParameterBufferSize::DependsAsParameters() {
        return std::map<String,DeviceCreationParameter*>();
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterBufferSize::DefaultAsInt(std::map<String,String> Parameters) {
        return 256;
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMinAsInt(std::map<String,String> Parameters) {
        return 32;
    }

    optional<int>
    AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMaxAsInt(std::map<String,String> Parameters) {
        return 4096;
    }

    std::vector<int>
    AudioOutputDeviceCoreAudio::ParameterBufferSize::PossibilitiesAsInt(std::map<String,String> Parameters) {
        return std::vector<int>();
    }

    void AudioOutputDeviceCoreAudio::ParameterBufferSize::OnSetValue(int i) throw (Exception) {
        // not posssible, as parameter is fix
    }

    String AudioOutputDeviceCoreAudio::ParameterBufferSize::Name() {
        return "BUFFERSIZE";
    }
} // namespace LinuxSampler
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2009 - 2013 Grigor Iliev *
6	* *
7	* This program is free software; you can redistribute it and/or modify *
8	* it under the terms of the GNU General Public License as published by *
9	* the Free Software Foundation; either version 2 of the License, or *
10	* (at your option) any later version. *
11	* *
12	* This program is distributed in the hope that it will be useful, *
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15	* GNU General Public License for more details. *
16	* *
17	* You should have received a copy of the GNU General Public License *
18	* along with this program; if not, write to the Free Software *
19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20	* MA 02111-1307 USA *
21	***************************************************************************/
22
23	#include "AudioOutputDeviceCoreAudio.h"
24
25	#include "../../common/global_private.h"
26
27	namespace LinuxSampler {
28
29	void AudioOutputDeviceCoreAudio::AudioQueueListener (
30	void *inUserData, AudioQueueRef inAQ, AudioQueuePropertyID inID
31	) {
32	switch(inID) {
33	case kAudioQueueProperty_IsRunning:
34
35	break;
36	case kAudioQueueProperty_CurrentDevice:
37
38	break;
39	}
40	}
41
42	void AudioOutputDeviceCoreAudio::HandleOutputBuffer (
43	void *aqData,
44	AudioQueueRef inAQ,
45	AudioQueueBufferRef inBuffer
46	) {
47	AQPlayerState* pAqData = (AQPlayerState*) aqData;
48	if (atomic_read(&(pAqData->mIsRunning)) == 0) {
49	AudioQueueFlush(pAqData->mQueue);
50	AudioQueueStop (pAqData->mQueue, true);
51	return;
52	}
53
54	if(atomic_read(&(pAqData->pDevice->restartQueue))) return;
55
56	uint bufferSize = pAqData->pDevice->uiBufferSize;
57
58	// let all connected engines render 'fragmentSize' sample points
59	pAqData->pDevice->RenderAudio(bufferSize);
60
61	Float32* pDataBuf = (Float32*)(inBuffer->mAudioData);
62
63	uint uiCoreAudioChannels = pAqData->pDevice->uiCoreAudioChannels;
64	for (int c = 0; c < uiCoreAudioChannels; c++) {
65	float* in = pAqData->pDevice->Channels[c]->Buffer();
66	for (int i = 0, o = c; i < bufferSize; i++ , o += uiCoreAudioChannels) {
67	pDataBuf[o] = in[i];
68	}
69	}
70
71	inBuffer->mAudioDataByteSize = (uiCoreAudioChannels * 4) * bufferSize;
72
73	OSStatus res = AudioQueueEnqueueBuffer(pAqData->mQueue, inBuffer, 0, NULL);
74	if(res) std::cerr << "AudioQueueEnqueueBuffer: Error " << res << std::endl;
75	}
76
77	void AudioOutputDeviceCoreAudio::DeviceChanged() {
78	dmsg(1,("Restarting audio queue..."));
79	atomic_set(&restartQueue, 1);
80	}
81
82	AudioOutputDeviceCoreAudio::AudioOutputDeviceCoreAudio (
83	std::map<String,DeviceCreationParameter*> Parameters
84	) : AudioOutputDevice(Parameters), Thread(true, true, 1, 0), CurrentDevice(0) {
85
86	dmsg(2,("AudioOutputDeviceCoreAudio::AudioOutputDeviceCoreAudio()\n"));
87	if(CAAudioDeviceListModel::GetModel()->GetOutputDeviceCount() < 1) {
88	throw Exception("No audio output device found");
89	}
90	atomic_set(&pausedNew, 0);
91	pausedOld = 0;
92	atomic_set(&restartQueue, 0);
93
94	uiCoreAudioChannels = ((DeviceCreationParameterInt*)Parameters["CHANNELS"])->ValueAsInt();
95	uint samplerate = ((DeviceCreationParameterInt*)Parameters["SAMPLERATE"])->ValueAsInt();
96	uiBufferNumber = ((DeviceCreationParameterInt*)Parameters["BUFFERS"])->ValueAsInt();
97	uiBufferSize = ((DeviceCreationParameterInt*)Parameters["BUFFERSIZE"])->ValueAsInt();
98	int device = 0;
99	try { device = ((ParameterDevice*)Parameters["DEVICE"])->GetDeviceIndex(); }
100	catch(Exception x) { }
101
102	CurrentDevice = CAAudioDeviceListModel::GetModel()->GetOutputDevice(device);
103	CurrentDevice.AddListener(this);
104
105	memset (&aqPlayerState.mDataFormat, 0, sizeof(AudioStreamBasicDescription));
106
107	aqPlayerState.mDataFormat.mSampleRate = samplerate;
108	aqPlayerState.mDataFormat.mFormatID = kAudioFormatLinearPCM;
109
110	aqPlayerState.mDataFormat.mFormatFlags =
111	kLinearPCMFormatFlagIsFloat \| kLinearPCMFormatFlagIsPacked;
112
113	int samplesize = 4;
114	aqPlayerState.mDataFormat.mBytesPerPacket = uiCoreAudioChannels * samplesize;
115	aqPlayerState.mDataFormat.mFramesPerPacket = 1;
116	aqPlayerState.mDataFormat.mBytesPerFrame = uiCoreAudioChannels * samplesize;
117	aqPlayerState.mDataFormat.mChannelsPerFrame = uiCoreAudioChannels;
118	aqPlayerState.mDataFormat.mBitsPerChannel = 8 * samplesize;
119	aqPlayerState.mDataFormat.mReserved = 0;
120
121	aqPlayerState.mBuffers = new AudioQueueBufferRef[uiBufferNumber];
122
123	aqPlayerState.bufferByteSize =
124	MaxSamplesPerCycle() * aqPlayerState.mDataFormat.mBytesPerFrame;
125
126	aqPlayerState.mNumPacketsToRead = MaxSamplesPerCycle();
127
128	aqPlayerState.pDevice = this;
129	aqPlayerState.mQueue = NULL;
130
131	uint fragmentSize = MaxSamplesPerCycle();
132	// create audio channels for this audio device to which the sampler engines can write to
133	for (int i = 0; i < uiCoreAudioChannels; i++) {
134	this->Channels.push_back(new AudioChannel(i, fragmentSize));
135	}
136
137	StartThread();
138
139	if (!((DeviceCreationParameterBool*)Parameters["ACTIVE"])->ValueAsBool()) {
140	Stop();
141	}
142	}
143
144	AudioOutputDeviceCoreAudio::~AudioOutputDeviceCoreAudio() {
145	atomic_set(&(aqPlayerState.mIsRunning), 0);
146	{
147	LockGuard lock(destroyMutex);
148	AudioQueueDispose(aqPlayerState.mQueue, true);
149	}
150	delete [] aqPlayerState.mBuffers;
151
152	CurrentDevice.RemoveListener(this);
153	}
154
155	String AudioOutputDeviceCoreAudio::Name() {
156	return "COREAUDIO";
157	}
158
159	String AudioOutputDeviceCoreAudio::Description() {
160	return "Apple CoreAudio";
161	}
162
163	String AudioOutputDeviceCoreAudio::Version() {
164	String s = "$Revision$";
165	return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
166	}
167
168	void AudioOutputDeviceCoreAudio::Play() {
169	atomic_set(&pausedNew, 0);
170	}
171
172	bool AudioOutputDeviceCoreAudio::IsPlaying() {
173	return !atomic_read(&pausedNew);
174	}
175
176	void AudioOutputDeviceCoreAudio::Stop() {
177	atomic_set(&pausedNew, 1);
178	}
179
180	uint AudioOutputDeviceCoreAudio::MaxSamplesPerCycle() {
181	return uiBufferSize;
182	}
183
184	uint AudioOutputDeviceCoreAudio::SampleRate() {
185	return aqPlayerState.mDataFormat.mSampleRate;
186	}
187
188	String AudioOutputDeviceCoreAudio::Driver() {
189	return Name();
190	}
191
192	AudioChannel* AudioOutputDeviceCoreAudio::CreateChannel(uint ChannelNr) {
193	// just create a mix channel
194	return new AudioChannel(ChannelNr, Channel(ChannelNr % uiCoreAudioChannels));
195	}
196
197	void AudioOutputDeviceCoreAudio::FillBuffers() {
198	for (int i = 0; i < uiBufferNumber; ++i) {
199	HandleOutputBuffer (
200	&aqPlayerState,
201	aqPlayerState.mQueue,
202	aqPlayerState.mBuffers[i]
203	);
204	}
205	}
206
207	void AudioOutputDeviceCoreAudio::PrimeAudioQueue() {
208	OSStatus res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL);
209	if(res) {
210	String s = String("AudioQueuePrime: Error ") + ToString(res);
211	throw Exception(s);
212	}
213	}
214
215	void AudioOutputDeviceCoreAudio::CreateAndStartAudioQueue() throw(Exception) {
216	OSStatus res = AudioQueueNewOutput (
217	&aqPlayerState.mDataFormat,
218	HandleOutputBuffer,
219	&aqPlayerState,
220	CFRunLoopGetCurrent(),
221	kCFRunLoopCommonModes,
222	0,
223	&aqPlayerState.mQueue
224	);
225
226	if(res) {
227	String s = String("AudioQueueNewOutput: Error ") + ToString(res);
228	throw Exception(s);
229	}
230
231	CFStringRef devUID = CFStringCreateWithCString (
232	NULL, CurrentDevice.GetUID().c_str(), kCFStringEncodingASCII
233	);
234	res = AudioQueueSetProperty (
235	aqPlayerState.mQueue,
236	kAudioQueueProperty_CurrentDevice,
237	&devUID, sizeof(CFStringRef)
238	);
239	CFRelease(devUID);
240
241	if(res) {
242	String s = String("Failed to set audio device: ") + ToString(res);
243	throw Exception(s);
244	}
245
246	for (int i = 0; i < uiBufferNumber; ++i) {
247	res = AudioQueueAllocateBuffer (
248	aqPlayerState.mQueue,
249	aqPlayerState.bufferByteSize,
250	&aqPlayerState.mBuffers[i]
251	);
252
253	if(res) {
254	String s = String("AudioQueueAllocateBuffer: Error ");
255	throw Exception(s + ToString(res));
256	}
257	}
258
259	res = AudioQueueAddPropertyListener (
260	aqPlayerState.mQueue,
261	kAudioQueueProperty_CurrentDevice,
262	AudioQueueListener,
263	NULL
264	);
265	if(res) std::cerr << "Failed to register device change listener: " << res << std::endl;
266
267	res = AudioQueueAddPropertyListener (
268	aqPlayerState.mQueue,
269	kAudioQueueProperty_IsRunning,
270	AudioQueueListener,
271	NULL
272	);
273	if(res) std::cerr << "Failed to register running listener: " << res << std::endl;
274
275	Float32 gain = 1.0;
276
277	res = AudioQueueSetParameter (
278	aqPlayerState.mQueue,
279	kAudioQueueParam_Volume,
280	gain
281	);
282
283	if(res) std::cerr << "AudioQueueSetParameter: Error " << res << std::endl;
284
285	atomic_set(&(aqPlayerState.mIsRunning), 1);
286	FillBuffers();
287	PrimeAudioQueue();
288
289	res = AudioQueueStart(aqPlayerState.mQueue, NULL);
290	if(res) {
291	String s = String("AudioQueueStart: Error ") + ToString(res);
292	throw Exception(s);
293	}
294	}
295
296	void AudioOutputDeviceCoreAudio::DestroyAudioQueue() {
297	AudioQueueFlush(aqPlayerState.mQueue);
298	AudioQueueStop (aqPlayerState.mQueue, true);
299	AudioQueueDispose(aqPlayerState.mQueue, true);
300	aqPlayerState.mQueue = NULL;
301	}
302
303	/**
304	* Entry point for the thread.
305	*/
306	int AudioOutputDeviceCoreAudio::Main() {
307	dmsg(1,("CoreAudio thread started\n"));
308	OSStatus res;
309	if(aqPlayerState.mQueue == NULL) {
310	/*
311	* Need to be run from this thread because of CFRunLoopGetCurrent()
312	* which returns the CFRunLoop object for the current thread.
313	*/
314	try { CreateAndStartAudioQueue(); }
315	catch(Exception e) {
316	std::cerr << "Failed to star audio queue: " + e.Message() << std::endl;
317	return 0;
318	}
319	}
320
321	{
322	LockGuard lock(destroyMutex);
323	do {
324	if(atomic_read(&pausedNew) != pausedOld) {
325	pausedOld = atomic_read(&pausedNew);
326
327	if(pausedOld) {
328	res = AudioQueuePause(aqPlayerState.mQueue);
329	if(res) std::cerr << "AudioQueuePause: Error " << res << std::endl;
330	} else {
331	res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL);
332	if(res) std::cerr << "AudioQueuePrime: Error " << res << std::endl;
333	res = AudioQueueStart(aqPlayerState.mQueue, NULL);
334	if(res) std::cerr << "AudioQueueStart: Error " << res << std::endl;
335	}
336	}
337
338	if(atomic_read(&restartQueue)) {
339	DestroyAudioQueue();
340	CreateAndStartAudioQueue();
341	atomic_set(&restartQueue, 0);
342	dmsg(1,("Audio queue restarted"));
343	}
344
345	CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.2, false);
346	} while (atomic_read(&(aqPlayerState.mIsRunning)));
347	}
348
349	dmsg(2,("CoreAudio thread stopped\n"));
350
351	pthread_exit(NULL);
352	return 0;
353	}
354
355
356	// ************* ParameterDevice *************
357	// *
358
359	AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice() : DeviceCreationParameterString() {
360	InitWithDefault(); // use default device
361	}
362
363	AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice(String s)
364	throw (Exception) : DeviceCreationParameterString(s) {
365	}
366
367	String AudioOutputDeviceCoreAudio::ParameterDevice::Description() {
368	return "Output device to be used";
369	}
370
371	bool AudioOutputDeviceCoreAudio::ParameterDevice::Fix() {
372	return true;
373	}
374
375	bool AudioOutputDeviceCoreAudio::ParameterDevice::Mandatory() {
376	return false;
377	}
378
379	std::map<String,DeviceCreationParameter*>
380	AudioOutputDeviceCoreAudio::ParameterDevice::DependsAsParameters() {
381	return std::map<String,DeviceCreationParameter*>(); // no dependencies
382	}
383
384	optional<String>
385	AudioOutputDeviceCoreAudio::ParameterDevice::DefaultAsString(std::map<String,String> Parameters) {
386	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
387	if (devs->GetOutputDeviceCount() < 1) {
388	throw Exception("AudioOutputDeviceCoreAudio: Can't find any output device");
389	}
390	UInt32 idx = devs->GetOutputDeviceIndex(devs->GetDefaultOutputDeviceID());
391	return CreateDeviceName(idx);
392	}
393
394	std::vector<String>
395	AudioOutputDeviceCoreAudio::ParameterDevice::PossibilitiesAsString(std::map<String,String> Parameters) {
396	std::vector<String> deviceNames;
397
398	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
399	for(int i = 0; i < devs->GetOutputDeviceCount(); i++) {
400	if(devs->GetOutputDevice(i).GetChannelNumber() < 1) continue;
401
402	deviceNames.push_back(CreateDeviceName(i));
403	}
404
405	return deviceNames;
406	}
407
408	String AudioOutputDeviceCoreAudio::ParameterDevice::CreateDeviceName(int devIndex) {
409	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
410	// Note that the space " " is used as delimiter to obtain the
411	// device index. See GetDeviceIndex()
412	return ToString(devIndex + 1) + " " + devs->GetOutputDevice(devIndex).GetName();
413	}
414
415	void AudioOutputDeviceCoreAudio::ParameterDevice::OnSetValue(String s) throw (Exception) {
416	// not posssible, as parameter is fix
417	}
418
419	String AudioOutputDeviceCoreAudio::ParameterDevice::Name() {
420	return "DEVICE";
421	}
422
423	int AudioOutputDeviceCoreAudio::ParameterDevice::GetDeviceIndex() {
424	String s = ValueAsString();
425	if(s.empty()) return -1;
426	int n = s.find(' ');
427	s = s.substr(0, n);
428	return ToInt(s) - 1;
429	}
430
431	// ************* ParameterSampleRate *************
432	// *
433
434	AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate() :
435	AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() {
436
437	}
438
439	AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate(String s) :
440	AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(s) {
441
442	}
443
444	std::map<String,DeviceCreationParameter*>
445	AudioOutputDeviceCoreAudio::ParameterSampleRate::DependsAsParameters() {
446	static ParameterDevice device;
447	std::map<String,DeviceCreationParameter*> dependencies;
448	dependencies[device.Name()] = &device;
449	return dependencies;
450	}
451
452	optional<int>
453	AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) {
454	dmsg(2,("AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt()\n"));
455	ParameterDevice dev(Parameters["DEVICE"]);
456	int samplerate = 44100;
457
458	try {
459	int idx = dev.GetDeviceIndex();
460
461	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
462	samplerate = devs->GetOutputDevice(idx).GetDefaultSamplerate();
463	} catch(Exception e) { }
464
465	return samplerate;
466	}
467
468	std::vector<int>
469	AudioOutputDeviceCoreAudio::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) {
470	ParameterDevice dev(Parameters["DEVICE"]);
471	std::vector<int> srates;
472
473	try {
474	int idx = dev.GetDeviceIndex();
475	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
476	srates = devs->GetOutputDevice(idx).GetNominalSamplerates();
477	} catch(Exception x) { }
478
479	return srates;
480	}
481
482
483	// ************* ParameterChannels *************
484	// *
485
486	AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels() :
487	AudioOutputDevice::ParameterChannels::ParameterChannels() {
488
489	}
490
491	AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels(String s) :
492	AudioOutputDevice::ParameterChannels::ParameterChannels(s) {
493
494	}
495
496	optional<int>
497	AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) {
498	dmsg(2,("AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt()\n"));
499	ParameterDevice dev(Parameters["DEVICE"]);
500	int chns = 2;
501
502	try {
503	int idx = dev.GetDeviceIndex();
504	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
505	chns = devs->GetOutputDevice(idx).GetChannelNumber();
506	} catch(Exception e) { }
507
508	return chns;
509	}
510
511	std::vector<int>
512	AudioOutputDeviceCoreAudio::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) {
513	ParameterDevice dev(Parameters["DEVICE"]);
514	std::vector<int> chns;
515
516	try {
517	int idx = dev.GetDeviceIndex();
518	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
519	for(int i = 1; i <= devs->GetOutputDevice(idx).GetChannelNumber(); i++) {
520	chns.push_back(i);
521	}
522	} catch(Exception x) { }
523
524	return chns;
525	}
526
527	// ************* ParameterBuffers *************
528	// *
529
530	AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers() : DeviceCreationParameterInt() {
531	InitWithDefault();
532	}
533
534	AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers(String s)
535	throw (Exception) : DeviceCreationParameterInt(s) {
536	}
537
538	String AudioOutputDeviceCoreAudio::ParameterBuffers::Description() {
539	return "Number of audio buffer";
540	}
541
542	bool AudioOutputDeviceCoreAudio::ParameterBuffers::Fix() {
543	return true;
544	}
545
546	bool AudioOutputDeviceCoreAudio::ParameterBuffers::Mandatory() {
547	return false;
548	}
549
550	std::map<String,DeviceCreationParameter*>
551	AudioOutputDeviceCoreAudio::ParameterBuffers::DependsAsParameters() {
552	return std::map<String,DeviceCreationParameter*>();
553	}
554
555	optional<int>
556	AudioOutputDeviceCoreAudio::ParameterBuffers::DefaultAsInt(std::map<String,String> Parameters) {
557	return 3;
558	}
559
560	optional<int>
561	AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMinAsInt(std::map<String,String> Parameters) {
562	return 2;
563	}
564
565	optional<int>
566	AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMaxAsInt(std::map<String,String> Parameters) {
567	return 16;
568	}
569
570	std::vector<int>
571	AudioOutputDeviceCoreAudio::ParameterBuffers::PossibilitiesAsInt(std::map<String,String> Parameters) {
572	return std::vector<int>();
573	}
574
575	void AudioOutputDeviceCoreAudio::ParameterBuffers::OnSetValue(int i) throw (Exception) {
576	// not posssible, as parameter is fix
577	}
578
579	String AudioOutputDeviceCoreAudio::ParameterBuffers::Name() {
580	return "BUFFERS";
581	}
582
583	// ************* ParameterBufferSize *************
584	// *
585
586	AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize() : DeviceCreationParameterInt() {
587	InitWithDefault();
588	}
589
590	AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize(String s)
591	throw (Exception) : DeviceCreationParameterInt(s) {
592	}
593
594	String AudioOutputDeviceCoreAudio::ParameterBufferSize::Description() {
595	return "Size of the audio buffer in sample frames";
596	}
597
598	bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Fix() {
599	return true;
600	}
601
602	bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Mandatory() {
603	return false;
604	}
605
606	std::map<String,DeviceCreationParameter*>
607	AudioOutputDeviceCoreAudio::ParameterBufferSize::DependsAsParameters() {
608	return std::map<String,DeviceCreationParameter*>();
609	}
610
611	optional<int>
612	AudioOutputDeviceCoreAudio::ParameterBufferSize::DefaultAsInt(std::map<String,String> Parameters) {
613	return 256;
614	}
615
616	optional<int>
617	AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMinAsInt(std::map<String,String> Parameters) {
618	return 32;
619	}
620
621	optional<int>
622	AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMaxAsInt(std::map<String,String> Parameters) {
623	return 4096;
624	}
625
626	std::vector<int>
627	AudioOutputDeviceCoreAudio::ParameterBufferSize::PossibilitiesAsInt(std::map<String,String> Parameters) {
628	return std::vector<int>();
629	}
630
631	void AudioOutputDeviceCoreAudio::ParameterBufferSize::OnSetValue(int i) throw (Exception) {
632	// not posssible, as parameter is fix
633	}
634
635	String AudioOutputDeviceCoreAudio::ParameterBufferSize::Name() {
636	return "BUFFERSIZE";
637	}
638	} // namespace LinuxSampler