drivers/audio/CAAudioDeviceModel.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 "CAAudioDeviceModel.h"

#include <iostream>
#include "../../common/Exception.h"
#include "../../common/global_private.h"

namespace LinuxSampler {

    CAAudioDeviceModel::CAAudioDeviceModel(AudioDeviceID Id) {
        this->Id = Id;
        ChannelNumber = 2;
        DefaultSamplerate = 44100;

        charBufSize = 512;
        charBuf = new char[charBufSize];

        Init();
    }

    CAAudioDeviceModel::CAAudioDeviceModel(const CAAudioDeviceModel& m) : Uid(m.Uid),
            Name(m.Name), NominalSamplerates(m.NominalSamplerates), AudioStreams(m.AudioStreams) {

        Id = m.Id;
        ChannelNumber = m.ChannelNumber;
        DefaultSamplerate = m.DefaultSamplerate;

        charBufSize = 512;
        charBuf = new char[charBufSize];

        Init();
    }

    CAAudioDeviceModel::~CAAudioDeviceModel() {
        CAAudioDeviceListModel::GetModel()->RemoveListener(this);
        delete [] charBuf;
    }

    CAAudioDeviceModel& CAAudioDeviceModel::operator=(const CAAudioDeviceModel& m) {
        Id = m.Id;
        Uid = m.Uid;
        Name = m.Name;
        ChannelNumber = m.ChannelNumber;
        DefaultSamplerate = m.DefaultSamplerate;
        NominalSamplerates = m.NominalSamplerates;
        AudioStreams = m.AudioStreams;

        return *this;
    }

    void CAAudioDeviceModel::Init() {
        CAAudioDeviceListModel::GetModel()->AddListener(this);
    }

    void CAAudioDeviceModel::DeviceChanged(AudioDeviceID devID) {
        if(GetID() == devID) FireDeviceChangedEvent();
    }

    void CAAudioDeviceModel::FireDeviceChangedEvent() {
        for(int i = 0; i < GetListenerCount(); i++) {
            GetListener(i)->DeviceChanged();
        }
    }

    AudioDeviceID CAAudioDeviceModel::GetID() { return Id; }

    std::string CAAudioDeviceModel::GetUID() { return Uid; }

    void CAAudioDeviceModel::SetUID(CFStringRef s) {
        Uid = GetStr(s);
    }

    std::string CAAudioDeviceModel::GetName() { return Name; }

    void CAAudioDeviceModel::SetName(CFStringRef s) {
        Name = GetStr(s);
    }

    int CAAudioDeviceModel::GetChannelNumber() { return ChannelNumber; }

    int CAAudioDeviceModel::GetDefaultSamplerate() { return DefaultSamplerate; }

    const std::vector<int> CAAudioDeviceModel::GetNominalSamplerates() {
        return NominalSamplerates;
    }

    std::vector<CAAudioStream> CAAudioDeviceModel::GetAudioStreams() {
        return AudioStreams;
    }

    std::string CAAudioDeviceModel::GetStr(CFStringRef s) {
        if(s == NULL) return std::string("Undefined");

        CFRetain(s);
        CFIndex len = CFStringGetLength(s) + 1;
        if(charBufSize < len) {
            delete [] charBuf;
            charBufSize *= 2;
            if(charBufSize < len) charBufSize = len;
            charBuf = new char[charBufSize];
        }
        
        std::string s2;
        if(CFStringGetCString(s, charBuf, charBufSize, kCFStringEncodingASCII)) {
            s2 = charBuf;
        }
        CFRelease(s);

        return s2;
    }

//////////////////////////////////////////////////////////////////
////

    CAAudioDeviceListModel* CAAudioDeviceListModel::pModel = NULL;

    CAAudioDeviceListModel* CAAudioDeviceListModel::GetModel() {
        if(pModel == NULL) {
            pModel = new CAAudioDeviceListModel();
            pModel->RescanDevices();
            pModel->InstallListeners();
        }
        return pModel;
    }
    
    OSStatus CAAudioDeviceListModel::AudioHardwarePropertyListenerCallback (
        AudioHardwarePropertyID inPropertyID, void* inClientData
    ) {
        CAAudioDeviceListModel* model = CAAudioDeviceListModel::GetModel();
        switch(inPropertyID) {
            case kAudioHardwarePropertyDevices:
                model->RescanDevices();
                break;
            case kAudioHardwarePropertyDefaultOutputDevice:
                model->UpdateDefaultOutputDevice();
                model->FireDefaultOutputDeviceChangedEvent(model->GetDefaultOutputDeviceID());
                break;
        }
        return noErr;
    }

    OSStatus CAAudioDeviceListModel::AudioDevicePropertyListenerCallback (
        AudioDeviceID inDevice,
        UInt32 inChannel,
        Boolean isInput,
        AudioDevicePropertyID inPropertyID,
        void* inClientData
    ) {
        CAAudioDeviceListModel* model = CAAudioDeviceListModel::GetModel();

        switch(inPropertyID) {
            case kAudioDevicePropertyDeviceHasChanged:
                model->FireDeviceChangedEvent(inDevice);
                break;
        }

        return noErr;
    }

    CAAudioDeviceListModel::CAAudioDeviceListModel() {
        DefaultOutputDeviceID = 0;
    }

    CAAudioDeviceListModel::~CAAudioDeviceListModel() {
        UninstallListeners();
    }

    void CAAudioDeviceListModel::InstallListeners() {
        InstallHardwareListeners();
        InstallDeviceListeners();
    }

    void CAAudioDeviceListModel::UninstallListeners() {
        UninstallHardwareListeners();
        UninstallDeviceListeners();
    }

    void CAAudioDeviceListModel::InstallHardwareListeners() {
        // Notify when device is added or removed
        InstallHardwareListener(kAudioHardwarePropertyDevices);
        //Notify when the default audio output device is changed
        InstallHardwareListener(kAudioHardwarePropertyDefaultOutputDevice);
    }

    void CAAudioDeviceListModel::UninstallHardwareListeners() {
        UninstallHardwareListener(kAudioHardwarePropertyDevices);
        UninstallHardwareListener(kAudioHardwarePropertyDefaultOutputDevice);
    }

    void CAAudioDeviceListModel::InstallHardwareListener(AudioHardwarePropertyID id) {
        AudioHardwareAddPropertyListener (
            id, AudioHardwarePropertyListenerCallback, NULL
        );
    }

    void CAAudioDeviceListModel::UninstallHardwareListener(AudioHardwarePropertyID id) {
        AudioHardwareRemovePropertyListener (
            id, AudioHardwarePropertyListenerCallback
        );
    }

    void CAAudioDeviceListModel::InstallDeviceListeners() {
        InstallDeviceListener(kAudioDevicePropertyDeviceHasChanged);
    }

    void CAAudioDeviceListModel::UninstallDeviceListeners() {
        UninstallDeviceListener(kAudioDevicePropertyDeviceHasChanged);
    }

    void CAAudioDeviceListModel::InstallDeviceListener(AudioDevicePropertyID id) {
        for(int i = 0; i < GetModel()->GetOutputDeviceCount(); i++) {
            AudioDeviceAddPropertyListener (
                GetModel()->GetOutputDevice(i).GetID(), 0, false,
                id, AudioDevicePropertyListenerCallback, NULL
            );
        }
    }

    void CAAudioDeviceListModel::UninstallDeviceListener(AudioDevicePropertyID id) {
        for(int i = 0; i < GetModel()->GetOutputDeviceCount(); i++) {
            AudioDeviceRemovePropertyListener (
                GetModel()->GetOutputDevice(i).GetID(), 0, false,
                id, AudioDevicePropertyListenerCallback
            );
        }
    }

    void CAAudioDeviceListModel::FireDeviceChangedEvent(AudioDeviceID devID) {
        LockGuard lock(DeviceMutex);
        for(int i = 0; i < GetListenerCount(); i++) {
            GetListener(i)->DeviceChanged(devID);
        }
    }

    void CAAudioDeviceListModel::FireDeviceListChangedEvent() {
        LockGuard lock(DeviceMutex);
        for(int i = 0; i < GetListenerCount(); i++) {
            GetListener(i)->DeviceListChanged();
        }
    }

    void CAAudioDeviceListModel::FireDefaultOutputDeviceChangedEvent(AudioDeviceID newID) {
        LockGuard lock(DeviceMutex);
        for(int i = 0; i < GetListenerCount(); i++) {
            GetListener(i)->DefaultOutputDeviceChanged(newID);
        }
    }

    AudioDeviceID CAAudioDeviceListModel::GetDefaultOutputDeviceID() {
        return DefaultOutputDeviceID;
    }

    UInt32 CAAudioDeviceListModel::GetOutputDeviceCount() {
        LockGuard lock(DeviceMutex);
        return outDevices.size();
    }

    CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDevice(UInt32 Index) {
        LockGuard lock(DeviceMutex);
        if(Index < 0 || Index >= GetOutputDeviceCount()) {
            throw Exception("Device index out of bounds");
        }

        return outDevices[Index];
    }

    CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDeviceByID(AudioDeviceID devID) {
        LockGuard lock(DeviceMutex);
        for(int i = 0; i < outDevices.size(); i++) {
            if(outDevices[i].GetID() == devID) {
                CAAudioDeviceModel dev = outDevices[i];
                return dev;
            }
        }
        throw Exception("Unknown audio device ID: " + ToString(devID));
    }

    UInt32 CAAudioDeviceListModel::GetOutputDeviceIndex(AudioDeviceID devID) {
        LockGuard lock(DeviceMutex);
        for(UInt32 i = 0; i < outDevices.size(); i++) {
            if(outDevices[i].GetID() == devID) {
                return i;
            }
        }
        throw Exception("Unknown audio device ID: " + ToString(devID));
    }

    void CAAudioDeviceListModel::RescanDevices() {
        LockGuard lock(DeviceMutex);
        inDevices.clear();
        outDevices.clear();

        UInt32   outSize;
        Boolean  outWritable;

        UpdateDefaultOutputDevice();

        OSStatus res = AudioHardwareGetPropertyInfo (
            kAudioHardwarePropertyDevices, &outSize, &outWritable
        );

        if(res) {
            std::cerr << "Failed to get device list: " << res << std::endl;
            return;
        }

        UInt32 deviceNumber = outSize / sizeof(AudioDeviceID);
        if(deviceNumber < 1) {
            std::cerr << "No audio devices found" << std::endl;
            return;
        }

        if(deviceNumber * sizeof(AudioDeviceID) != outSize) {
            std::cerr << "Invalid device size. This is a bug!" << std::endl;
            return;
        }

        AudioDeviceID* devs = new AudioDeviceID[deviceNumber];

        res = AudioHardwareGetProperty (
            kAudioHardwarePropertyDevices, &outSize, devs
        );

        if(res) {
            std::cerr << "Failed to get device IDs: " << res << std::endl;
            delete [] devs;
            return;
        }

        for(int i = 0; i < deviceNumber; i++) {
            // TODO: for now skip devices which are not alive
            outSize = sizeof(UInt32);
            UInt32 isAlive = 0;

            res = AudioDeviceGetProperty (
                devs[i], 0, false,
                kAudioDevicePropertyDeviceIsAlive,
                &outSize, &isAlive
            );

            if(res || !isAlive) continue;
            ///////

            CAAudioDeviceModel dev(devs[i]);

            CFStringRef tempStringRef = NULL;

            // Get the name of the device
            outSize = sizeof(CFStringRef);

            res = AudioDeviceGetProperty (
                devs[i], 0, false,
                kAudioObjectPropertyName,
                &outSize, &tempStringRef
            );

            dev.SetName(tempStringRef);
            if(tempStringRef != NULL) CFRelease(tempStringRef);
            ///////

            // Get the name of the device
            outSize = sizeof(CFStringRef);

            res = AudioDeviceGetProperty (
                devs[i], 0, false,
                kAudioDevicePropertyDeviceUID,
                &outSize, &tempStringRef
            );

            dev.SetUID(tempStringRef);
            if(tempStringRef != NULL) CFRelease(tempStringRef);
            ///////

            GetChannels(&dev);
            GetSamplerates(&dev);
            if(dev.GetChannelNumber() > 0) outDevices.push_back(dev);
        }

        delete [] devs;
        FireDeviceListChangedEvent();

        /*for(int i = 0; i < GetOutputDeviceCount(); i++) {
            std::cout << "Device ID: " << GetOutputDevice(i).GetID() << std::endl;
            std::cout << "Device name: " << GetOutputDevice(i).GetName() << std::endl;
            std::cout << "Device UID: " << GetOutputDevice(i).GetUID() << std::endl;
            std::cout << "Channels: " << GetOutputDevice(i).GetChannelNumber() << std::endl;
            std::cout << "Default samplerate: " << GetOutputDevice(i).GetDefaultSamplerate() << std::endl;

            const std::vector<int> rates = GetOutputDevice(i).GetNominalSamplerates();
            std::cout << "Nominal samplerates: " << std::endl;
            for(int j = 0; j < rates.size(); j++) {
                std::cout << "\t" << rates[j] << std::endl;
            }
            std::cout << std::endl;
        }*/
    }

    void CAAudioDeviceListModel::UpdateDefaultOutputDevice() {
        AudioDeviceID id;
        UInt32 size = sizeof(AudioDeviceID);
        OSStatus res = AudioHardwareGetProperty (
            kAudioHardwarePropertyDefaultOutputDevice, &size, &id
        );
        if(res) std::cerr << "Failed to get default output device: " << res << std::endl;
        else DefaultOutputDeviceID = id;
    }

    void CAAudioDeviceListModel::GetChannels(CAAudioDeviceModel* pDev) {
        UInt32 outSize;
        bool isInput = false;

        OSStatus res = AudioDeviceGetPropertyInfo (
            pDev->GetID(), 0, isInput,
            kAudioDevicePropertyStreamConfiguration,
            &outSize, NULL
        );
        if(res || outSize == 0) {
            if(res) std::cerr << "Failed to get stream config: " << res << std::endl;
            return;
        }

        AudioBufferList* pBufferList = NULL;
        pBufferList = (AudioBufferList*)malloc(outSize);
        if(pBufferList == NULL) {
            perror(NULL);
            return;
        }

        res = AudioDeviceGetProperty (
            pDev->GetID(), 0, isInput,
            kAudioDevicePropertyStreamConfiguration,
            &outSize, pBufferList
        );

        if(res = noErr) {
            std::cerr << "Failed to get channel number: " << res << std::endl;
            free(pBufferList);
            return;
        }

        UInt32 chns = 0;
        for(int i = 0; i < pBufferList->mNumberBuffers; i++) {
            chns += pBufferList->mBuffers[i].mNumberChannels;
        }

        pDev->ChannelNumber = chns;
        
        free(pBufferList);
    }

    /*void CAAudioDeviceListModel::GetStreams(CAAudioDeviceModel* pDev) {
        UInt32 outSize = sizeof(AudioStreamID);

        OSStatus res = AudioDeviceGetPropertyInfo (
            pDev->GetID(), 0, false,
            kAudioDevicePropertyStreams,
            &outSize, NULL
        );

        if(res) {
            std::cerr << "Failed to get device streams: " << res << std::endl;
            return;
        }

        UInt32 streamNumber = outSize / sizeof(AudioStreamID);
        if(streamNumber < 1) {
            std::cerr << "No streams found" << std::endl;
            return;
        }

        if(streamNumber * sizeof(AudioStreamID) != outSize) {
            std::cerr << "Invalid AudioStreamID size. This is a bug!" << std::endl;
            return;
        }

        AudioStreamID* streams = new AudioStreamID[streamNumber];

        res = AudioDeviceGetProperty (
            pDev->GetID(), 0, false,
            kAudioDevicePropertyStreams,
            &outSize, streams
        );

        if(res) {
            std::cerr << "Failed to get stream IDs: " << res << std::endl;
            delete [] streams;
            return;
        }

        for(int i = 0; i < streamNumber; i++) {
            UInt32 inStream;

            res = AudioStreamGetProperty (
                streams[i], 0, kAudioStreamPropertyDirection, &outSize, &inStream
            );

            if(res) {
                std::cerr << "Failed to get stream direction: " << res << std::endl;
                continue;
            }

            //pDev->AudioStreams.push_back(CAAudioStream(inStream, chns));
        }

        delete [] streams;
    }*/

    void CAAudioDeviceListModel::GetSamplerates(CAAudioDeviceModel* pDev) {
        UInt32 outSize;

        // Get current nominal sample rate
        outSize = sizeof(Float64);
        Float64 srate;

        OSStatus res = AudioDeviceGetProperty (
            pDev->GetID(), 0, false,
            kAudioDevicePropertyNominalSampleRate,
            &outSize, &srate
        );
        
        if(res) std::cerr << "Failed to get default samplerate: " << res << std::endl;
        else pDev->DefaultSamplerate = srate;
        ///////

        res = AudioDeviceGetPropertyInfo (
            pDev->GetID(), 0, false,
            kAudioDevicePropertyAvailableNominalSampleRates,
            &outSize, NULL
        );

        if(res) {
            std::cerr << "Failed to get nominal samplerates: " << res << std::endl;
            return;
        }

        UInt32 rangeNumber = outSize / sizeof(AudioValueRange);
        if(rangeNumber < 1) {
            std::cerr << "No nominal samplerates found" << std::endl;
            return;
        }

        if(rangeNumber * sizeof(AudioValueRange) != outSize) {
            std::cerr << "Invalid AudioValueRange size. This is a bug!" << std::endl;
            return;
        }

        AudioValueRange* ranges = new AudioValueRange[rangeNumber];

        res = AudioDeviceGetProperty (
            pDev->GetID(), 0, false,
            kAudioDevicePropertyAvailableNominalSampleRates,
            &outSize, ranges
        );

        if(res) {
            std::cerr << "Failed to get samplerate ranges: " << res << std::endl;
            delete [] ranges;
            return;
        }

        for(int i = 0; i < rangeNumber; i++) {
            // FIXME: might be ranges of valid samplerates
            UInt32 min = (UInt32)ranges[i].mMinimum;
            UInt32 max = (UInt32)ranges[i].mMaximum;
            pDev->NominalSamplerates.push_back(min);
            if(min != max) pDev->NominalSamplerates.push_back(max);
        }

        delete [] ranges;
    }
} // namespace LinuxSampler
1	iliev	1832	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	persson	2427	* Copyright (C) 2009 - 2013 Grigor Iliev *
6	iliev	1832	* *
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 "CAAudioDeviceModel.h"
24
25			#include <iostream>
26			#include "../../common/Exception.h"
27			#include "../../common/global_private.h"
28
29			namespace LinuxSampler {
30
31			CAAudioDeviceModel::CAAudioDeviceModel(AudioDeviceID Id) {
32			this->Id = Id;
33			ChannelNumber = 2;
34			DefaultSamplerate = 44100;
35
36			charBufSize = 512;
37			charBuf = new char[charBufSize];
38
39			Init();
40			}
41
42			CAAudioDeviceModel::CAAudioDeviceModel(const CAAudioDeviceModel& m) : Uid(m.Uid),
43			Name(m.Name), NominalSamplerates(m.NominalSamplerates), AudioStreams(m.AudioStreams) {
44
45			Id = m.Id;
46			ChannelNumber = m.ChannelNumber;
47			DefaultSamplerate = m.DefaultSamplerate;
48
49			charBufSize = 512;
50			charBuf = new char[charBufSize];
51
52			Init();
53			}
54
55			CAAudioDeviceModel::~CAAudioDeviceModel() {
56			CAAudioDeviceListModel::GetModel()->RemoveListener(this);
57			delete [] charBuf;
58			}
59
60			CAAudioDeviceModel& CAAudioDeviceModel::operator=(const CAAudioDeviceModel& m) {
61			Id = m.Id;
62			Uid = m.Uid;
63			Name = m.Name;
64			ChannelNumber = m.ChannelNumber;
65			DefaultSamplerate = m.DefaultSamplerate;
66			NominalSamplerates = m.NominalSamplerates;
67			AudioStreams = m.AudioStreams;
68
69			return *this;
70			}
71
72			void CAAudioDeviceModel::Init() {
73			CAAudioDeviceListModel::GetModel()->AddListener(this);
74			}
75
76			void CAAudioDeviceModel::DeviceChanged(AudioDeviceID devID) {
77			if(GetID() == devID) FireDeviceChangedEvent();
78			}
79
80			void CAAudioDeviceModel::FireDeviceChangedEvent() {
81			for(int i = 0; i < GetListenerCount(); i++) {
82			GetListener(i)->DeviceChanged();
83			}
84			}
85
86			AudioDeviceID CAAudioDeviceModel::GetID() { return Id; }
87
88			std::string CAAudioDeviceModel::GetUID() { return Uid; }
89
90			void CAAudioDeviceModel::SetUID(CFStringRef s) {
91			Uid = GetStr(s);
92			}
93
94			std::string CAAudioDeviceModel::GetName() { return Name; }
95
96			void CAAudioDeviceModel::SetName(CFStringRef s) {
97			Name = GetStr(s);
98			}
99
100			int CAAudioDeviceModel::GetChannelNumber() { return ChannelNumber; }
101
102			int CAAudioDeviceModel::GetDefaultSamplerate() { return DefaultSamplerate; }
103
104			const std::vector<int> CAAudioDeviceModel::GetNominalSamplerates() {
105			return NominalSamplerates;
106			}
107
108			std::vector<CAAudioStream> CAAudioDeviceModel::GetAudioStreams() {
109			return AudioStreams;
110			}
111
112			std::string CAAudioDeviceModel::GetStr(CFStringRef s) {
113			if(s == NULL) return std::string("Undefined");
114
115			CFRetain(s);
116			CFIndex len = CFStringGetLength(s) + 1;
117			if(charBufSize < len) {
118			delete [] charBuf;
119			charBufSize *= 2;
120	iliev	1846	if(charBufSize < len) charBufSize = len;
121	iliev	1832	charBuf = new char[charBufSize];
122			}
123
124			std::string s2;
125			if(CFStringGetCString(s, charBuf, charBufSize, kCFStringEncodingASCII)) {
126			s2 = charBuf;
127			}
128			CFRelease(s);
129
130			return s2;
131			}
132
133			//////////////////////////////////////////////////////////////////
134			////
135
136			CAAudioDeviceListModel* CAAudioDeviceListModel::pModel = NULL;
137
138			CAAudioDeviceListModel* CAAudioDeviceListModel::GetModel() {
139			if(pModel == NULL) {
140			pModel = new CAAudioDeviceListModel();
141			pModel->RescanDevices();
142			pModel->InstallListeners();
143			}
144			return pModel;
145			}
146
147			OSStatus CAAudioDeviceListModel::AudioHardwarePropertyListenerCallback (
148			AudioHardwarePropertyID inPropertyID, void* inClientData
149			) {
150			CAAudioDeviceListModel* model = CAAudioDeviceListModel::GetModel();
151			switch(inPropertyID) {
152			case kAudioHardwarePropertyDevices:
153			model->RescanDevices();
154			break;
155			case kAudioHardwarePropertyDefaultOutputDevice:
156			model->UpdateDefaultOutputDevice();
157			model->FireDefaultOutputDeviceChangedEvent(model->GetDefaultOutputDeviceID());
158			break;
159			}
160			return noErr;
161			}
162
163			OSStatus CAAudioDeviceListModel::AudioDevicePropertyListenerCallback (
164			AudioDeviceID inDevice,
165			UInt32 inChannel,
166			Boolean isInput,
167			AudioDevicePropertyID inPropertyID,
168			void* inClientData
169			) {
170			CAAudioDeviceListModel* model = CAAudioDeviceListModel::GetModel();
171
172			switch(inPropertyID) {
173			case kAudioDevicePropertyDeviceHasChanged:
174			model->FireDeviceChangedEvent(inDevice);
175			break;
176			}
177
178			return noErr;
179			}
180
181			CAAudioDeviceListModel::CAAudioDeviceListModel() {
182			DefaultOutputDeviceID = 0;
183			}
184
185			CAAudioDeviceListModel::~CAAudioDeviceListModel() {
186			UninstallListeners();
187			}
188
189			void CAAudioDeviceListModel::InstallListeners() {
190			InstallHardwareListeners();
191			InstallDeviceListeners();
192			}
193
194			void CAAudioDeviceListModel::UninstallListeners() {
195			UninstallHardwareListeners();
196			UninstallDeviceListeners();
197			}
198
199			void CAAudioDeviceListModel::InstallHardwareListeners() {
200			// Notify when device is added or removed
201			InstallHardwareListener(kAudioHardwarePropertyDevices);
202			//Notify when the default audio output device is changed
203			InstallHardwareListener(kAudioHardwarePropertyDefaultOutputDevice);
204			}
205
206			void CAAudioDeviceListModel::UninstallHardwareListeners() {
207			UninstallHardwareListener(kAudioHardwarePropertyDevices);
208			UninstallHardwareListener(kAudioHardwarePropertyDefaultOutputDevice);
209			}
210
211			void CAAudioDeviceListModel::InstallHardwareListener(AudioHardwarePropertyID id) {
212			AudioHardwareAddPropertyListener (
213			id, AudioHardwarePropertyListenerCallback, NULL
214			);
215			}
216
217			void CAAudioDeviceListModel::UninstallHardwareListener(AudioHardwarePropertyID id) {
218			AudioHardwareRemovePropertyListener (
219			id, AudioHardwarePropertyListenerCallback
220			);
221			}
222
223			void CAAudioDeviceListModel::InstallDeviceListeners() {
224			InstallDeviceListener(kAudioDevicePropertyDeviceHasChanged);
225			}
226
227			void CAAudioDeviceListModel::UninstallDeviceListeners() {
228			UninstallDeviceListener(kAudioDevicePropertyDeviceHasChanged);
229			}
230
231			void CAAudioDeviceListModel::InstallDeviceListener(AudioDevicePropertyID id) {
232			for(int i = 0; i < GetModel()->GetOutputDeviceCount(); i++) {
233			AudioDeviceAddPropertyListener (
234			GetModel()->GetOutputDevice(i).GetID(), 0, false,
235			id, AudioDevicePropertyListenerCallback, NULL
236			);
237			}
238			}
239
240			void CAAudioDeviceListModel::UninstallDeviceListener(AudioDevicePropertyID id) {
241			for(int i = 0; i < GetModel()->GetOutputDeviceCount(); i++) {
242			AudioDeviceRemovePropertyListener (
243			GetModel()->GetOutputDevice(i).GetID(), 0, false,
244			id, AudioDevicePropertyListenerCallback
245			);
246			}
247			}
248
249			void CAAudioDeviceListModel::FireDeviceChangedEvent(AudioDeviceID devID) {
250	persson	2427	LockGuard lock(DeviceMutex);
251	iliev	1832	for(int i = 0; i < GetListenerCount(); i++) {
252			GetListener(i)->DeviceChanged(devID);
253			}
254			}
255
256			void CAAudioDeviceListModel::FireDeviceListChangedEvent() {
257	persson	2427	LockGuard lock(DeviceMutex);
258	iliev	1832	for(int i = 0; i < GetListenerCount(); i++) {
259			GetListener(i)->DeviceListChanged();
260			}
261			}
262
263			void CAAudioDeviceListModel::FireDefaultOutputDeviceChangedEvent(AudioDeviceID newID) {
264	persson	2427	LockGuard lock(DeviceMutex);
265	iliev	1832	for(int i = 0; i < GetListenerCount(); i++) {
266			GetListener(i)->DefaultOutputDeviceChanged(newID);
267			}
268			}
269
270			AudioDeviceID CAAudioDeviceListModel::GetDefaultOutputDeviceID() {
271			return DefaultOutputDeviceID;
272			}
273
274			UInt32 CAAudioDeviceListModel::GetOutputDeviceCount() {
275	persson	2427	LockGuard lock(DeviceMutex);
276			return outDevices.size();
277	iliev	1832	}
278
279			CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDevice(UInt32 Index) {
280	persson	2427	LockGuard lock(DeviceMutex);
281	iliev	1832	if(Index < 0 \|\| Index >= GetOutputDeviceCount()) {
282			throw Exception("Device index out of bounds");
283			}
284
285	persson	2427	return outDevices[Index];
286	iliev	1832	}
287
288			CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDeviceByID(AudioDeviceID devID) {
289	persson	2427	LockGuard lock(DeviceMutex);
290	iliev	1832	for(int i = 0; i < outDevices.size(); i++) {
291			if(outDevices[i].GetID() == devID) {
292			CAAudioDeviceModel dev = outDevices[i];
293			return dev;
294			}
295			}
296			throw Exception("Unknown audio device ID: " + ToString(devID));
297			}
298
299			UInt32 CAAudioDeviceListModel::GetOutputDeviceIndex(AudioDeviceID devID) {
300	persson	2427	LockGuard lock(DeviceMutex);
301	iliev	1832	for(UInt32 i = 0; i < outDevices.size(); i++) {
302			if(outDevices[i].GetID() == devID) {
303			return i;
304			}
305			}
306			throw Exception("Unknown audio device ID: " + ToString(devID));
307			}
308
309			void CAAudioDeviceListModel::RescanDevices() {
310	persson	2427	LockGuard lock(DeviceMutex);
311	iliev	1832	inDevices.clear();
312			outDevices.clear();
313
314			UInt32 outSize;
315			Boolean outWritable;
316
317			UpdateDefaultOutputDevice();
318
319			OSStatus res = AudioHardwareGetPropertyInfo (
320			kAudioHardwarePropertyDevices, &outSize, &outWritable
321			);
322
323			if(res) {
324			std::cerr << "Failed to get device list: " << res << std::endl;
325			return;
326			}
327
328			UInt32 deviceNumber = outSize / sizeof(AudioDeviceID);
329			if(deviceNumber < 1) {
330			std::cerr << "No audio devices found" << std::endl;
331			return;
332			}
333
334			if(deviceNumber * sizeof(AudioDeviceID) != outSize) {
335			std::cerr << "Invalid device size. This is a bug!" << std::endl;
336			return;
337			}
338
339			AudioDeviceID* devs = new AudioDeviceID[deviceNumber];
340
341			res = AudioHardwareGetProperty (
342			kAudioHardwarePropertyDevices, &outSize, devs
343			);
344
345			if(res) {
346			std::cerr << "Failed to get device IDs: " << res << std::endl;
347			delete [] devs;
348			return;
349			}
350
351			for(int i = 0; i < deviceNumber; i++) {
352			// TODO: for now skip devices which are not alive
353			outSize = sizeof(UInt32);
354			UInt32 isAlive = 0;
355
356			res = AudioDeviceGetProperty (
357			devs[i], 0, false,
358			kAudioDevicePropertyDeviceIsAlive,
359			&outSize, &isAlive
360			);
361
362			if(res \|\| !isAlive) continue;
363			///////
364
365			CAAudioDeviceModel dev(devs[i]);
366
367			CFStringRef tempStringRef = NULL;
368
369			// Get the name of the device
370			outSize = sizeof(CFStringRef);
371
372			res = AudioDeviceGetProperty (
373			devs[i], 0, false,
374			kAudioObjectPropertyName,
375			&outSize, &tempStringRef
376			);
377
378			dev.SetName(tempStringRef);
379			if(tempStringRef != NULL) CFRelease(tempStringRef);
380			///////
381
382			// Get the name of the device
383			outSize = sizeof(CFStringRef);
384
385			res = AudioDeviceGetProperty (
386			devs[i], 0, false,
387			kAudioDevicePropertyDeviceUID,
388			&outSize, &tempStringRef
389			);
390
391			dev.SetUID(tempStringRef);
392			if(tempStringRef != NULL) CFRelease(tempStringRef);
393			///////
394
395			GetChannels(&dev);
396			GetSamplerates(&dev);
397			if(dev.GetChannelNumber() > 0) outDevices.push_back(dev);
398			}
399
400			delete [] devs;
401			FireDeviceListChangedEvent();
402
403			/*for(int i = 0; i < GetOutputDeviceCount(); i++) {
404			std::cout << "Device ID: " << GetOutputDevice(i).GetID() << std::endl;
405			std::cout << "Device name: " << GetOutputDevice(i).GetName() << std::endl;
406			std::cout << "Device UID: " << GetOutputDevice(i).GetUID() << std::endl;
407			std::cout << "Channels: " << GetOutputDevice(i).GetChannelNumber() << std::endl;
408			std::cout << "Default samplerate: " << GetOutputDevice(i).GetDefaultSamplerate() << std::endl;
409
410			const std::vector<int> rates = GetOutputDevice(i).GetNominalSamplerates();
411			std::cout << "Nominal samplerates: " << std::endl;
412			for(int j = 0; j < rates.size(); j++) {
413			std::cout << "\t" << rates[j] << std::endl;
414			}
415			std::cout << std::endl;
416			}*/
417			}
418
419			void CAAudioDeviceListModel::UpdateDefaultOutputDevice() {
420			AudioDeviceID id;
421			UInt32 size = sizeof(AudioDeviceID);
422			OSStatus res = AudioHardwareGetProperty (
423			kAudioHardwarePropertyDefaultOutputDevice, &size, &id
424			);
425			if(res) std::cerr << "Failed to get default output device: " << res << std::endl;
426			else DefaultOutputDeviceID = id;
427			}
428
429			void CAAudioDeviceListModel::GetChannels(CAAudioDeviceModel* pDev) {
430			UInt32 outSize;
431			bool isInput = false;
432
433			OSStatus res = AudioDeviceGetPropertyInfo (
434			pDev->GetID(), 0, isInput,
435			kAudioDevicePropertyStreamConfiguration,
436			&outSize, NULL
437			);
438			if(res \|\| outSize == 0) {
439			if(res) std::cerr << "Failed to get stream config: " << res << std::endl;
440			return;
441			}
442
443			AudioBufferList* pBufferList = NULL;
444			pBufferList = (AudioBufferList*)malloc(outSize);
445			if(pBufferList == NULL) {
446			perror(NULL);
447			return;
448			}
449
450			res = AudioDeviceGetProperty (
451			pDev->GetID(), 0, isInput,
452			kAudioDevicePropertyStreamConfiguration,
453			&outSize, pBufferList
454			);
455
456			if(res = noErr) {
457			std::cerr << "Failed to get channel number: " << res << std::endl;
458			free(pBufferList);
459			return;
460			}
461
462			UInt32 chns = 0;
463			for(int i = 0; i < pBufferList->mNumberBuffers; i++) {
464			chns += pBufferList->mBuffers[i].mNumberChannels;
465			}
466
467			pDev->ChannelNumber = chns;
468
469			free(pBufferList);
470			}
471
472			/void CAAudioDeviceListModel::GetStreams(CAAudioDeviceModel pDev) {
473			UInt32 outSize = sizeof(AudioStreamID);
474
475			OSStatus res = AudioDeviceGetPropertyInfo (
476			pDev->GetID(), 0, false,
477			kAudioDevicePropertyStreams,
478			&outSize, NULL
479			);
480
481			if(res) {
482			std::cerr << "Failed to get device streams: " << res << std::endl;
483			return;
484			}
485
486			UInt32 streamNumber = outSize / sizeof(AudioStreamID);
487			if(streamNumber < 1) {
488			std::cerr << "No streams found" << std::endl;
489			return;
490			}
491
492			if(streamNumber * sizeof(AudioStreamID) != outSize) {
493			std::cerr << "Invalid AudioStreamID size. This is a bug!" << std::endl;
494			return;
495			}
496
497			AudioStreamID* streams = new AudioStreamID[streamNumber];
498
499			res = AudioDeviceGetProperty (
500			pDev->GetID(), 0, false,
501			kAudioDevicePropertyStreams,
502			&outSize, streams
503			);
504
505			if(res) {
506			std::cerr << "Failed to get stream IDs: " << res << std::endl;
507			delete [] streams;
508			return;
509			}
510
511			for(int i = 0; i < streamNumber; i++) {
512			UInt32 inStream;
513
514			res = AudioStreamGetProperty (
515			streams[i], 0, kAudioStreamPropertyDirection, &outSize, &inStream
516			);
517
518			if(res) {
519			std::cerr << "Failed to get stream direction: " << res << std::endl;
520			continue;
521			}
522
523			//pDev->AudioStreams.push_back(CAAudioStream(inStream, chns));
524			}
525
526			delete [] streams;
527			}*/
528
529			void CAAudioDeviceListModel::GetSamplerates(CAAudioDeviceModel* pDev) {
530			UInt32 outSize;
531
532			// Get current nominal sample rate
533			outSize = sizeof(Float64);
534			Float64 srate;
535
536			OSStatus res = AudioDeviceGetProperty (
537			pDev->GetID(), 0, false,
538			kAudioDevicePropertyNominalSampleRate,
539			&outSize, &srate
540			);
541
542			if(res) std::cerr << "Failed to get default samplerate: " << res << std::endl;
543			else pDev->DefaultSamplerate = srate;
544			///////
545
546			res = AudioDeviceGetPropertyInfo (
547			pDev->GetID(), 0, false,
548			kAudioDevicePropertyAvailableNominalSampleRates,
549			&outSize, NULL
550			);
551
552			if(res) {
553			std::cerr << "Failed to get nominal samplerates: " << res << std::endl;
554			return;
555			}
556
557			UInt32 rangeNumber = outSize / sizeof(AudioValueRange);
558			if(rangeNumber < 1) {
559			std::cerr << "No nominal samplerates found" << std::endl;
560			return;
561			}
562
563			if(rangeNumber * sizeof(AudioValueRange) != outSize) {
564			std::cerr << "Invalid AudioValueRange size. This is a bug!" << std::endl;
565			return;
566			}
567
568			AudioValueRange* ranges = new AudioValueRange[rangeNumber];
569
570			res = AudioDeviceGetProperty (
571			pDev->GetID(), 0, false,
572			kAudioDevicePropertyAvailableNominalSampleRates,
573			&outSize, ranges
574			);
575
576			if(res) {
577			std::cerr << "Failed to get samplerate ranges: " << res << std::endl;
578			delete [] ranges;
579			return;
580			}
581
582			for(int i = 0; i < rangeNumber; i++) {
583			// FIXME: might be ranges of valid samplerates
584			UInt32 min = (UInt32)ranges[i].mMinimum;
585			UInt32 max = (UInt32)ranges[i].mMaximum;
586			pDev->NominalSamplerates.push_back(min);
587			if(min != max) pDev->NominalSamplerates.push_back(max);
588			}
589
590			delete [] ranges;
591			}
592			} // namespace LinuxSampler