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	/***************************************************************************
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 "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	if(charBufSize < len) charBufSize = len;
121	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	LockGuard lock(DeviceMutex);
251	for(int i = 0; i < GetListenerCount(); i++) {
252	GetListener(i)->DeviceChanged(devID);
253	}
254	}
255
256	void CAAudioDeviceListModel::FireDeviceListChangedEvent() {
257	LockGuard lock(DeviceMutex);
258	for(int i = 0; i < GetListenerCount(); i++) {
259	GetListener(i)->DeviceListChanged();
260	}
261	}
262
263	void CAAudioDeviceListModel::FireDefaultOutputDeviceChangedEvent(AudioDeviceID newID) {
264	LockGuard lock(DeviceMutex);
265	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	LockGuard lock(DeviceMutex);
276	return outDevices.size();
277	}
278
279	CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDevice(UInt32 Index) {
280	LockGuard lock(DeviceMutex);
281	if(Index < 0 \|\| Index >= GetOutputDeviceCount()) {
282	throw Exception("Device index out of bounds");
283	}
284
285	return outDevices[Index];
286	}
287
288	CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDeviceByID(AudioDeviceID devID) {
289	LockGuard lock(DeviceMutex);
290	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	LockGuard lock(DeviceMutex);
301	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	LockGuard lock(DeviceMutex);
311	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