drivers/audio/AudioOutputDeviceCoreAudio.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2009 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);
        destroyMutex.Lock();
        AudioQueueDispose(aqPlayerState.mQueue, true);
        destroyMutex.Unlock();
        delete [] aqPlayerState.mBuffers;

        CurrentDevice.RemoveListener(this);
    }

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

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

    String AudioOutputDeviceCoreAudio::Version() {
       String s = "$Revision: 1.5 $";
       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;
            }
        }

        destroyMutex.Lock();
        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();
                try { CreateAndStartAudioQueue(); }
                catch(Exception e) {
                    destroyMutex.Unlock();
                    throw e;
                }
                atomic_set(&restartQueue, 0);
                dmsg(1,("Audio queue restarted"));
            }
            
            CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.2, false);
        } while (atomic_read(&(aqPlayerState.mIsRunning)));
        destroyMutex.Unlock();

        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 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	destroyMutex.Lock();
147	AudioQueueDispose(aqPlayerState.mQueue, true);
148	destroyMutex.Unlock();
149	delete [] aqPlayerState.mBuffers;
150
151	CurrentDevice.RemoveListener(this);
152	}
153
154	String AudioOutputDeviceCoreAudio::Name() {
155	return "COREAUDIO";
156	}
157
158	String AudioOutputDeviceCoreAudio::Description() {
159	return "Apple CoreAudio";
160	}
161
162	String AudioOutputDeviceCoreAudio::Version() {
163	String s = "$Revision: 1.5 $";
164	return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
165	}
166
167	void AudioOutputDeviceCoreAudio::Play() {
168	atomic_set(&pausedNew, 0);
169	}
170
171	bool AudioOutputDeviceCoreAudio::IsPlaying() {
172	return !atomic_read(&pausedNew);
173	}
174
175	void AudioOutputDeviceCoreAudio::Stop() {
176	atomic_set(&pausedNew, 1);
177	}
178
179	uint AudioOutputDeviceCoreAudio::MaxSamplesPerCycle() {
180	return uiBufferSize;
181	}
182
183	uint AudioOutputDeviceCoreAudio::SampleRate() {
184	return aqPlayerState.mDataFormat.mSampleRate;
185	}
186
187	String AudioOutputDeviceCoreAudio::Driver() {
188	return Name();
189	}
190
191	AudioChannel* AudioOutputDeviceCoreAudio::CreateChannel(uint ChannelNr) {
192	// just create a mix channel
193	return new AudioChannel(ChannelNr, Channel(ChannelNr % uiCoreAudioChannels));
194	}
195
196	void AudioOutputDeviceCoreAudio::FillBuffers() {
197	for (int i = 0; i < uiBufferNumber; ++i) {
198	HandleOutputBuffer (
199	&aqPlayerState,
200	aqPlayerState.mQueue,
201	aqPlayerState.mBuffers[i]
202	);
203	}
204	}
205
206	void AudioOutputDeviceCoreAudio::PrimeAudioQueue() {
207	OSStatus res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL);
208	if(res) {
209	String s = String("AudioQueuePrime: Error ") + ToString(res);
210	throw Exception(s);
211	}
212	}
213
214	void AudioOutputDeviceCoreAudio::CreateAndStartAudioQueue() throw(Exception) {
215	OSStatus res = AudioQueueNewOutput (
216	&aqPlayerState.mDataFormat,
217	HandleOutputBuffer,
218	&aqPlayerState,
219	CFRunLoopGetCurrent(),
220	kCFRunLoopCommonModes,
221	0,
222	&aqPlayerState.mQueue
223	);
224
225	if(res) {
226	String s = String("AudioQueueNewOutput: Error ") + ToString(res);
227	throw Exception(s);
228	}
229
230	CFStringRef devUID = CFStringCreateWithCString (
231	NULL, CurrentDevice.GetUID().c_str(), kCFStringEncodingASCII
232	);
233	res = AudioQueueSetProperty (
234	aqPlayerState.mQueue,
235	kAudioQueueProperty_CurrentDevice,
236	&devUID, sizeof(CFStringRef)
237	);
238	CFRelease(devUID);
239
240	if(res) {
241	String s = String("Failed to set audio device: ") + ToString(res);
242	throw Exception(s);
243	}
244
245	for (int i = 0; i < uiBufferNumber; ++i) {
246	res = AudioQueueAllocateBuffer (
247	aqPlayerState.mQueue,
248	aqPlayerState.bufferByteSize,
249	&aqPlayerState.mBuffers[i]
250	);
251
252	if(res) {
253	String s = String("AudioQueueAllocateBuffer: Error ");
254	throw Exception(s + ToString(res));
255	}
256	}
257
258	res = AudioQueueAddPropertyListener (
259	aqPlayerState.mQueue,
260	kAudioQueueProperty_CurrentDevice,
261	AudioQueueListener,
262	NULL
263	);
264	if(res) std::cerr << "Failed to register device change listener: " << res << std::endl;
265
266	res = AudioQueueAddPropertyListener (
267	aqPlayerState.mQueue,
268	kAudioQueueProperty_IsRunning,
269	AudioQueueListener,
270	NULL
271	);
272	if(res) std::cerr << "Failed to register running listener: " << res << std::endl;
273
274	Float32 gain = 1.0;
275
276	res = AudioQueueSetParameter (
277	aqPlayerState.mQueue,
278	kAudioQueueParam_Volume,
279	gain
280	);
281
282	if(res) std::cerr << "AudioQueueSetParameter: Error " << res << std::endl;
283
284	atomic_set(&(aqPlayerState.mIsRunning), 1);
285	FillBuffers();
286	PrimeAudioQueue();
287
288	res = AudioQueueStart(aqPlayerState.mQueue, NULL);
289	if(res) {
290	String s = String("AudioQueueStart: Error ") + ToString(res);
291	throw Exception(s);
292	}
293	}
294
295	void AudioOutputDeviceCoreAudio::DestroyAudioQueue() {
296	AudioQueueFlush(aqPlayerState.mQueue);
297	AudioQueueStop (aqPlayerState.mQueue, true);
298	AudioQueueDispose(aqPlayerState.mQueue, true);
299	aqPlayerState.mQueue = NULL;
300	}
301
302	/**
303	* Entry point for the thread.
304	*/
305	int AudioOutputDeviceCoreAudio::Main() {
306	dmsg(1,("CoreAudio thread started\n"));
307	OSStatus res;
308	if(aqPlayerState.mQueue == NULL) {
309	/*
310	* Need to be run from this thread because of CFRunLoopGetCurrent()
311	* which returns the CFRunLoop object for the current thread.
312	*/
313	try { CreateAndStartAudioQueue(); }
314	catch(Exception e) {
315	std::cerr << "Failed to star audio queue: " + e.Message() << std::endl;
316	return 0;
317	}
318	}
319
320	destroyMutex.Lock();
321	do {
322	if(atomic_read(&pausedNew) != pausedOld) {
323	pausedOld = atomic_read(&pausedNew);
324
325	if(pausedOld) {
326	res = AudioQueuePause(aqPlayerState.mQueue);
327	if(res) std::cerr << "AudioQueuePause: Error " << res << std::endl;
328	} else {
329	res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL);
330	if(res) std::cerr << "AudioQueuePrime: Error " << res << std::endl;
331	res = AudioQueueStart(aqPlayerState.mQueue, NULL);
332	if(res) std::cerr << "AudioQueueStart: Error " << res << std::endl;
333	}
334	}
335
336	if(atomic_read(&restartQueue)) {
337	DestroyAudioQueue();
338	try { CreateAndStartAudioQueue(); }
339	catch(Exception e) {
340	destroyMutex.Unlock();
341	throw e;
342	}
343	atomic_set(&restartQueue, 0);
344	dmsg(1,("Audio queue restarted"));
345	}
346
347	CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.2, false);
348	} while (atomic_read(&(aqPlayerState.mIsRunning)));
349	destroyMutex.Unlock();
350
351	dmsg(2,("CoreAudio thread stopped\n"));
352
353	pthread_exit(NULL);
354	return 0;
355	}
356
357
358	// ************* ParameterDevice *************
359	// *
360
361	AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice() : DeviceCreationParameterString() {
362	InitWithDefault(); // use default device
363	}
364
365	AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice(String s)
366	throw (Exception) : DeviceCreationParameterString(s) {
367	}
368
369	String AudioOutputDeviceCoreAudio::ParameterDevice::Description() {
370	return "Output device to be used";
371	}
372
373	bool AudioOutputDeviceCoreAudio::ParameterDevice::Fix() {
374	return true;
375	}
376
377	bool AudioOutputDeviceCoreAudio::ParameterDevice::Mandatory() {
378	return false;
379	}
380
381	std::map<String,DeviceCreationParameter*>
382	AudioOutputDeviceCoreAudio::ParameterDevice::DependsAsParameters() {
383	return std::map<String,DeviceCreationParameter*>(); // no dependencies
384	}
385
386	optional<String>
387	AudioOutputDeviceCoreAudio::ParameterDevice::DefaultAsString(std::map<String,String> Parameters) {
388	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
389	if (devs->GetOutputDeviceCount() < 1) {
390	throw Exception("AudioOutputDeviceCoreAudio: Can't find any output device");
391	}
392	UInt32 idx = devs->GetOutputDeviceIndex(devs->GetDefaultOutputDeviceID());
393	return CreateDeviceName(idx);
394	}
395
396	std::vector<String>
397	AudioOutputDeviceCoreAudio::ParameterDevice::PossibilitiesAsString(std::map<String,String> Parameters) {
398	std::vector<String> deviceNames;
399
400	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
401	for(int i = 0; i < devs->GetOutputDeviceCount(); i++) {
402	if(devs->GetOutputDevice(i).GetChannelNumber() < 1) continue;
403
404	deviceNames.push_back(CreateDeviceName(i));
405	}
406
407	return deviceNames;
408	}
409
410	String AudioOutputDeviceCoreAudio::ParameterDevice::CreateDeviceName(int devIndex) {
411	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
412	// Note that the space " " is used as delimiter to obtain the
413	// device index. See GetDeviceIndex()
414	return ToString(devIndex + 1) + " " + devs->GetOutputDevice(devIndex).GetName();
415	}
416
417	void AudioOutputDeviceCoreAudio::ParameterDevice::OnSetValue(String s) throw (Exception) {
418	// not posssible, as parameter is fix
419	}
420
421	String AudioOutputDeviceCoreAudio::ParameterDevice::Name() {
422	return "DEVICE";
423	}
424
425	int AudioOutputDeviceCoreAudio::ParameterDevice::GetDeviceIndex() {
426	String s = ValueAsString();
427	if(s.empty()) return -1;
428	int n = s.find(' ');
429	s = s.substr(0, n);
430	return ToInt(s) - 1;
431	}
432
433	// ************* ParameterSampleRate *************
434	// *
435
436	AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate() :
437	AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() {
438
439	}
440
441	AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate(String s) :
442	AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(s) {
443
444	}
445
446	std::map<String,DeviceCreationParameter*>
447	AudioOutputDeviceCoreAudio::ParameterSampleRate::DependsAsParameters() {
448	static ParameterDevice device;
449	std::map<String,DeviceCreationParameter*> dependencies;
450	dependencies[device.Name()] = &device;
451	return dependencies;
452	}
453
454	optional<int>
455	AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) {
456	dmsg(2,("AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt()\n"));
457	ParameterDevice dev(Parameters["DEVICE"]);
458	int samplerate = 44100;
459
460	try {
461	int idx = dev.GetDeviceIndex();
462
463	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
464	samplerate = devs->GetOutputDevice(idx).GetDefaultSamplerate();
465	} catch(Exception e) { }
466
467	return samplerate;
468	}
469
470	std::vector<int>
471	AudioOutputDeviceCoreAudio::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) {
472	ParameterDevice dev(Parameters["DEVICE"]);
473	std::vector<int> srates;
474
475	try {
476	int idx = dev.GetDeviceIndex();
477	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
478	srates = devs->GetOutputDevice(idx).GetNominalSamplerates();
479	} catch(Exception x) { }
480
481	return srates;
482	}
483
484
485	// ************* ParameterChannels *************
486	// *
487
488	AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels() :
489	AudioOutputDevice::ParameterChannels::ParameterChannels() {
490
491	}
492
493	AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels(String s) :
494	AudioOutputDevice::ParameterChannels::ParameterChannels(s) {
495
496	}
497
498	optional<int>
499	AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) {
500	dmsg(2,("AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt()\n"));
501	ParameterDevice dev(Parameters["DEVICE"]);
502	int chns = 2;
503
504	try {
505	int idx = dev.GetDeviceIndex();
506	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
507	chns = devs->GetOutputDevice(idx).GetChannelNumber();
508	} catch(Exception e) { }
509
510	return chns;
511	}
512
513	std::vector<int>
514	AudioOutputDeviceCoreAudio::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) {
515	ParameterDevice dev(Parameters["DEVICE"]);
516	std::vector<int> chns;
517
518	try {
519	int idx = dev.GetDeviceIndex();
520	CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel();
521	for(int i = 1; i <= devs->GetOutputDevice(idx).GetChannelNumber(); i++) {
522	chns.push_back(i);
523	}
524	} catch(Exception x) { }
525
526	return chns;
527	}
528
529	// ************* ParameterBuffers *************
530	// *
531
532	AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers() : DeviceCreationParameterInt() {
533	InitWithDefault();
534	}
535
536	AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers(String s)
537	throw (Exception) : DeviceCreationParameterInt(s) {
538	}
539
540	String AudioOutputDeviceCoreAudio::ParameterBuffers::Description() {
541	return "Number of audio buffer";
542	}
543
544	bool AudioOutputDeviceCoreAudio::ParameterBuffers::Fix() {
545	return true;
546	}
547
548	bool AudioOutputDeviceCoreAudio::ParameterBuffers::Mandatory() {
549	return false;
550	}
551
552	std::map<String,DeviceCreationParameter*>
553	AudioOutputDeviceCoreAudio::ParameterBuffers::DependsAsParameters() {
554	return std::map<String,DeviceCreationParameter*>();
555	}
556
557	optional<int>
558	AudioOutputDeviceCoreAudio::ParameterBuffers::DefaultAsInt(std::map<String,String> Parameters) {
559	return 3;
560	}
561
562	optional<int>
563	AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMinAsInt(std::map<String,String> Parameters) {
564	return 2;
565	}
566
567	optional<int>
568	AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMaxAsInt(std::map<String,String> Parameters) {
569	return 16;
570	}
571
572	std::vector<int>
573	AudioOutputDeviceCoreAudio::ParameterBuffers::PossibilitiesAsInt(std::map<String,String> Parameters) {
574	return std::vector<int>();
575	}
576
577	void AudioOutputDeviceCoreAudio::ParameterBuffers::OnSetValue(int i) throw (Exception) {
578	// not posssible, as parameter is fix
579	}
580
581	String AudioOutputDeviceCoreAudio::ParameterBuffers::Name() {
582	return "BUFFERS";
583	}
584
585	// ************* ParameterBufferSize *************
586	// *
587
588	AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize() : DeviceCreationParameterInt() {
589	InitWithDefault();
590	}
591
592	AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize(String s)
593	throw (Exception) : DeviceCreationParameterInt(s) {
594	}
595
596	String AudioOutputDeviceCoreAudio::ParameterBufferSize::Description() {
597	return "Size of the audio buffer in sample frames";
598	}
599
600	bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Fix() {
601	return true;
602	}
603
604	bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Mandatory() {
605	return false;
606	}
607
608	std::map<String,DeviceCreationParameter*>
609	AudioOutputDeviceCoreAudio::ParameterBufferSize::DependsAsParameters() {
610	return std::map<String,DeviceCreationParameter*>();
611	}
612
613	optional<int>
614	AudioOutputDeviceCoreAudio::ParameterBufferSize::DefaultAsInt(std::map<String,String> Parameters) {
615	return 256;
616	}
617
618	optional<int>
619	AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMinAsInt(std::map<String,String> Parameters) {
620	return 32;
621	}
622
623	optional<int>
624	AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMaxAsInt(std::map<String,String> Parameters) {
625	return 4096;
626	}
627
628	std::vector<int>
629	AudioOutputDeviceCoreAudio::ParameterBufferSize::PossibilitiesAsInt(std::map<String,String> Parameters) {
630	return std::vector<int>();
631	}
632
633	void AudioOutputDeviceCoreAudio::ParameterBufferSize::OnSetValue(int i) throw (Exception) {
634	// not posssible, as parameter is fix
635	}
636
637	String AudioOutputDeviceCoreAudio::ParameterBufferSize::Name() {
638	return "BUFFERSIZE";
639	}
640	} // namespace LinuxSampler