drivers/audio/CAAudioDeviceModel.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2009 Grigor Iliev                                       *
 *   Copyright (C) 2013 - 2016 Andreas Persson and Christian Schoenebeck   *
 *                                                                         *
 *   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 = (UInt32)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 (UInt32) 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) {
            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 Grigor Iliev *
6	* Copyright (C) 2013 - 2016 Andreas Persson and Christian Schoenebeck *
7	* *
8	* This program is free software; you can redistribute it and/or modify *
9	* it under the terms of the GNU General Public License as published by *
10	* the Free Software Foundation; either version 2 of the License, or *
11	* (at your option) any later version. *
12	* *
13	* This program is distributed in the hope that it will be useful, *
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16	* GNU General Public License for more details. *
17	* *
18	* You should have received a copy of the GNU General Public License *
19	* along with this program; if not, write to the Free Software *
20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21	* MA 02111-1307 USA *
22	***************************************************************************/
23
24	#include "CAAudioDeviceModel.h"
25
26	#include <iostream>
27	#include "../../common/Exception.h"
28	#include "../../common/global_private.h"
29
30	namespace LinuxSampler {
31
32	CAAudioDeviceModel::CAAudioDeviceModel(AudioDeviceID Id) {
33	this->Id = Id;
34	ChannelNumber = 2;
35	DefaultSamplerate = 44100;
36
37	charBufSize = 512;
38	charBuf = new char[charBufSize];
39
40	Init();
41	}
42
43	CAAudioDeviceModel::CAAudioDeviceModel(const CAAudioDeviceModel& m) : Uid(m.Uid),
44	Name(m.Name), NominalSamplerates(m.NominalSamplerates), AudioStreams(m.AudioStreams) {
45
46	Id = m.Id;
47	ChannelNumber = m.ChannelNumber;
48	DefaultSamplerate = m.DefaultSamplerate;
49
50	charBufSize = 512;
51	charBuf = new char[charBufSize];
52
53	Init();
54	}
55
56	CAAudioDeviceModel::~CAAudioDeviceModel() {
57	CAAudioDeviceListModel::GetModel()->RemoveListener(this);
58	delete [] charBuf;
59	}
60
61	CAAudioDeviceModel& CAAudioDeviceModel::operator=(const CAAudioDeviceModel& m) {
62	Id = m.Id;
63	Uid = m.Uid;
64	Name = m.Name;
65	ChannelNumber = m.ChannelNumber;
66	DefaultSamplerate = m.DefaultSamplerate;
67	NominalSamplerates = m.NominalSamplerates;
68	AudioStreams = m.AudioStreams;
69
70	return *this;
71	}
72
73	void CAAudioDeviceModel::Init() {
74	CAAudioDeviceListModel::GetModel()->AddListener(this);
75	}
76
77	void CAAudioDeviceModel::DeviceChanged(AudioDeviceID devID) {
78	if(GetID() == devID) FireDeviceChangedEvent();
79	}
80
81	void CAAudioDeviceModel::FireDeviceChangedEvent() {
82	for(int i = 0; i < GetListenerCount(); i++) {
83	GetListener(i)->DeviceChanged();
84	}
85	}
86
87	AudioDeviceID CAAudioDeviceModel::GetID() { return Id; }
88
89	std::string CAAudioDeviceModel::GetUID() { return Uid; }
90
91	void CAAudioDeviceModel::SetUID(CFStringRef s) {
92	Uid = GetStr(s);
93	}
94
95	std::string CAAudioDeviceModel::GetName() { return Name; }
96
97	void CAAudioDeviceModel::SetName(CFStringRef s) {
98	Name = GetStr(s);
99	}
100
101	int CAAudioDeviceModel::GetChannelNumber() { return ChannelNumber; }
102
103	int CAAudioDeviceModel::GetDefaultSamplerate() { return DefaultSamplerate; }
104
105	const std::vector<int> CAAudioDeviceModel::GetNominalSamplerates() {
106	return NominalSamplerates;
107	}
108
109	std::vector<CAAudioStream> CAAudioDeviceModel::GetAudioStreams() {
110	return AudioStreams;
111	}
112
113	std::string CAAudioDeviceModel::GetStr(CFStringRef s) {
114	if(s == NULL) return std::string("Undefined");
115
116	CFRetain(s);
117	CFIndex len = CFStringGetLength(s) + 1;
118	if(charBufSize < len) {
119	delete [] charBuf;
120	charBufSize *= 2;
121	if(charBufSize < len) charBufSize = (UInt32)len;
122	charBuf = new char[charBufSize];
123	}
124
125	std::string s2;
126	if(CFStringGetCString(s, charBuf, charBufSize, kCFStringEncodingASCII)) {
127	s2 = charBuf;
128	}
129	CFRelease(s);
130
131	return s2;
132	}
133
134	//////////////////////////////////////////////////////////////////
135	////
136
137	CAAudioDeviceListModel* CAAudioDeviceListModel::pModel = NULL;
138
139	CAAudioDeviceListModel* CAAudioDeviceListModel::GetModel() {
140	if(pModel == NULL) {
141	pModel = new CAAudioDeviceListModel();
142	pModel->RescanDevices();
143	pModel->InstallListeners();
144	}
145	return pModel;
146	}
147
148	OSStatus CAAudioDeviceListModel::AudioHardwarePropertyListenerCallback (
149	AudioHardwarePropertyID inPropertyID, void* inClientData
150	) {
151	CAAudioDeviceListModel* model = CAAudioDeviceListModel::GetModel();
152	switch(inPropertyID) {
153	case kAudioHardwarePropertyDevices:
154	model->RescanDevices();
155	break;
156	case kAudioHardwarePropertyDefaultOutputDevice:
157	model->UpdateDefaultOutputDevice();
158	model->FireDefaultOutputDeviceChangedEvent(model->GetDefaultOutputDeviceID());
159	break;
160	}
161	return noErr;
162	}
163
164	OSStatus CAAudioDeviceListModel::AudioDevicePropertyListenerCallback (
165	AudioDeviceID inDevice,
166	UInt32 inChannel,
167	Boolean isInput,
168	AudioDevicePropertyID inPropertyID,
169	void* inClientData
170	) {
171	CAAudioDeviceListModel* model = CAAudioDeviceListModel::GetModel();
172
173	switch(inPropertyID) {
174	case kAudioDevicePropertyDeviceHasChanged:
175	model->FireDeviceChangedEvent(inDevice);
176	break;
177	}
178
179	return noErr;
180	}
181
182	CAAudioDeviceListModel::CAAudioDeviceListModel() {
183	DefaultOutputDeviceID = 0;
184	}
185
186	CAAudioDeviceListModel::~CAAudioDeviceListModel() {
187	UninstallListeners();
188	}
189
190	void CAAudioDeviceListModel::InstallListeners() {
191	InstallHardwareListeners();
192	InstallDeviceListeners();
193	}
194
195	void CAAudioDeviceListModel::UninstallListeners() {
196	UninstallHardwareListeners();
197	UninstallDeviceListeners();
198	}
199
200	void CAAudioDeviceListModel::InstallHardwareListeners() {
201	// Notify when device is added or removed
202	InstallHardwareListener(kAudioHardwarePropertyDevices);
203	//Notify when the default audio output device is changed
204	InstallHardwareListener(kAudioHardwarePropertyDefaultOutputDevice);
205	}
206
207	void CAAudioDeviceListModel::UninstallHardwareListeners() {
208	UninstallHardwareListener(kAudioHardwarePropertyDevices);
209	UninstallHardwareListener(kAudioHardwarePropertyDefaultOutputDevice);
210	}
211
212	void CAAudioDeviceListModel::InstallHardwareListener(AudioHardwarePropertyID id) {
213	AudioHardwareAddPropertyListener (
214	id, AudioHardwarePropertyListenerCallback, NULL
215	);
216	}
217
218	void CAAudioDeviceListModel::UninstallHardwareListener(AudioHardwarePropertyID id) {
219	AudioHardwareRemovePropertyListener (
220	id, AudioHardwarePropertyListenerCallback
221	);
222	}
223
224	void CAAudioDeviceListModel::InstallDeviceListeners() {
225	InstallDeviceListener(kAudioDevicePropertyDeviceHasChanged);
226	}
227
228	void CAAudioDeviceListModel::UninstallDeviceListeners() {
229	UninstallDeviceListener(kAudioDevicePropertyDeviceHasChanged);
230	}
231
232	void CAAudioDeviceListModel::InstallDeviceListener(AudioDevicePropertyID id) {
233	for(int i = 0; i < GetModel()->GetOutputDeviceCount(); i++) {
234	AudioDeviceAddPropertyListener (
235	GetModel()->GetOutputDevice(i).GetID(), 0, false,
236	id, AudioDevicePropertyListenerCallback, NULL
237	);
238	}
239	}
240
241	void CAAudioDeviceListModel::UninstallDeviceListener(AudioDevicePropertyID id) {
242	for(int i = 0; i < GetModel()->GetOutputDeviceCount(); i++) {
243	AudioDeviceRemovePropertyListener (
244	GetModel()->GetOutputDevice(i).GetID(), 0, false,
245	id, AudioDevicePropertyListenerCallback
246	);
247	}
248	}
249
250	void CAAudioDeviceListModel::FireDeviceChangedEvent(AudioDeviceID devID) {
251	LockGuard lock(DeviceMutex);
252	for(int i = 0; i < GetListenerCount(); i++) {
253	GetListener(i)->DeviceChanged(devID);
254	}
255	}
256
257	void CAAudioDeviceListModel::FireDeviceListChangedEvent() {
258	LockGuard lock(DeviceMutex);
259	for(int i = 0; i < GetListenerCount(); i++) {
260	GetListener(i)->DeviceListChanged();
261	}
262	}
263
264	void CAAudioDeviceListModel::FireDefaultOutputDeviceChangedEvent(AudioDeviceID newID) {
265	LockGuard lock(DeviceMutex);
266	for(int i = 0; i < GetListenerCount(); i++) {
267	GetListener(i)->DefaultOutputDeviceChanged(newID);
268	}
269	}
270
271	AudioDeviceID CAAudioDeviceListModel::GetDefaultOutputDeviceID() {
272	return DefaultOutputDeviceID;
273	}
274
275	UInt32 CAAudioDeviceListModel::GetOutputDeviceCount() {
276	LockGuard lock(DeviceMutex);
277	return (UInt32) outDevices.size();
278	}
279
280	CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDevice(UInt32 Index) {
281	LockGuard lock(DeviceMutex);
282	if(/Index < 0 \|\|/ Index >= GetOutputDeviceCount()) {
283	throw Exception("Device index out of bounds");
284	}
285
286	return outDevices[Index];
287	}
288
289	CAAudioDeviceModel CAAudioDeviceListModel::GetOutputDeviceByID(AudioDeviceID devID) {
290	LockGuard lock(DeviceMutex);
291	for(int i = 0; i < outDevices.size(); i++) {
292	if(outDevices[i].GetID() == devID) {
293	CAAudioDeviceModel dev = outDevices[i];
294	return dev;
295	}
296	}
297	throw Exception("Unknown audio device ID: " + ToString(devID));
298	}
299
300	UInt32 CAAudioDeviceListModel::GetOutputDeviceIndex(AudioDeviceID devID) {
301	LockGuard lock(DeviceMutex);
302	for(UInt32 i = 0; i < outDevices.size(); i++) {
303	if(outDevices[i].GetID() == devID) {
304	return i;
305	}
306	}
307	throw Exception("Unknown audio device ID: " + ToString(devID));
308	}
309
310	void CAAudioDeviceListModel::RescanDevices() {
311	LockGuard lock(DeviceMutex);
312	inDevices.clear();
313	outDevices.clear();
314
315	UInt32 outSize;
316	Boolean outWritable;
317
318	UpdateDefaultOutputDevice();
319
320	OSStatus res = AudioHardwareGetPropertyInfo (
321	kAudioHardwarePropertyDevices, &outSize, &outWritable
322	);
323
324	if(res) {
325	std::cerr << "Failed to get device list: " << res << std::endl;
326	return;
327	}
328
329	UInt32 deviceNumber = outSize / sizeof(AudioDeviceID);
330	if(deviceNumber < 1) {
331	std::cerr << "No audio devices found" << std::endl;
332	return;
333	}
334
335	if(deviceNumber * sizeof(AudioDeviceID) != outSize) {
336	std::cerr << "Invalid device size. This is a bug!" << std::endl;
337	return;
338	}
339
340	AudioDeviceID* devs = new AudioDeviceID[deviceNumber];
341
342	res = AudioHardwareGetProperty (
343	kAudioHardwarePropertyDevices, &outSize, devs
344	);
345
346	if(res) {
347	std::cerr << "Failed to get device IDs: " << res << std::endl;
348	delete [] devs;
349	return;
350	}
351
352	for(int i = 0; i < deviceNumber; i++) {
353	// TODO: for now skip devices which are not alive
354	outSize = sizeof(UInt32);
355	UInt32 isAlive = 0;
356
357	res = AudioDeviceGetProperty (
358	devs[i], 0, false,
359	kAudioDevicePropertyDeviceIsAlive,
360	&outSize, &isAlive
361	);
362
363	if(res \|\| !isAlive) continue;
364	///////
365
366	CAAudioDeviceModel dev(devs[i]);
367
368	CFStringRef tempStringRef = NULL;
369
370	// Get the name of the device
371	outSize = sizeof(CFStringRef);
372
373	res = AudioDeviceGetProperty (
374	devs[i], 0, false,
375	kAudioObjectPropertyName,
376	&outSize, &tempStringRef
377	);
378
379	dev.SetName(tempStringRef);
380	if(tempStringRef != NULL) CFRelease(tempStringRef);
381	///////
382
383	// Get the name of the device
384	outSize = sizeof(CFStringRef);
385
386	res = AudioDeviceGetProperty (
387	devs[i], 0, false,
388	kAudioDevicePropertyDeviceUID,
389	&outSize, &tempStringRef
390	);
391
392	dev.SetUID(tempStringRef);
393	if(tempStringRef != NULL) CFRelease(tempStringRef);
394	///////
395
396	GetChannels(&dev);
397	GetSamplerates(&dev);
398	if(dev.GetChannelNumber() > 0) outDevices.push_back(dev);
399	}
400
401	delete [] devs;
402	FireDeviceListChangedEvent();
403
404	/*for(int i = 0; i < GetOutputDeviceCount(); i++) {
405	std::cout << "Device ID: " << GetOutputDevice(i).GetID() << std::endl;
406	std::cout << "Device name: " << GetOutputDevice(i).GetName() << std::endl;
407	std::cout << "Device UID: " << GetOutputDevice(i).GetUID() << std::endl;
408	std::cout << "Channels: " << GetOutputDevice(i).GetChannelNumber() << std::endl;
409	std::cout << "Default samplerate: " << GetOutputDevice(i).GetDefaultSamplerate() << std::endl;
410
411	const std::vector<int> rates = GetOutputDevice(i).GetNominalSamplerates();
412	std::cout << "Nominal samplerates: " << std::endl;
413	for(int j = 0; j < rates.size(); j++) {
414	std::cout << "\t" << rates[j] << std::endl;
415	}
416	std::cout << std::endl;
417	}*/
418	}
419
420	void CAAudioDeviceListModel::UpdateDefaultOutputDevice() {
421	AudioDeviceID id;
422	UInt32 size = sizeof(AudioDeviceID);
423	OSStatus res = AudioHardwareGetProperty (
424	kAudioHardwarePropertyDefaultOutputDevice, &size, &id
425	);
426	if(res) std::cerr << "Failed to get default output device: " << res << std::endl;
427	else DefaultOutputDeviceID = id;
428	}
429
430	void CAAudioDeviceListModel::GetChannels(CAAudioDeviceModel* pDev) {
431	UInt32 outSize;
432	bool isInput = false;
433
434	OSStatus res = AudioDeviceGetPropertyInfo (
435	pDev->GetID(), 0, isInput,
436	kAudioDevicePropertyStreamConfiguration,
437	&outSize, NULL
438	);
439	if(res \|\| outSize == 0) {
440	if(res) std::cerr << "Failed to get stream config: " << res << std::endl;
441	return;
442	}
443
444	AudioBufferList* pBufferList = NULL;
445	pBufferList = (AudioBufferList*)malloc(outSize);
446	if(pBufferList == NULL) {
447	perror(NULL);
448	return;
449	}
450
451	res = AudioDeviceGetProperty (
452	pDev->GetID(), 0, isInput,
453	kAudioDevicePropertyStreamConfiguration,
454	&outSize, pBufferList
455	);
456
457	if(res) {
458	std::cerr << "Failed to get channel number: " << res << std::endl;
459	free(pBufferList);
460	return;
461	}
462
463	UInt32 chns = 0;
464	for(int i = 0; i < pBufferList->mNumberBuffers; i++) {
465	chns += pBufferList->mBuffers[i].mNumberChannels;
466	}
467
468	pDev->ChannelNumber = chns;
469
470	free(pBufferList);
471	}
472
473	/void CAAudioDeviceListModel::GetStreams(CAAudioDeviceModel pDev) {
474	UInt32 outSize = sizeof(AudioStreamID);
475
476	OSStatus res = AudioDeviceGetPropertyInfo (
477	pDev->GetID(), 0, false,
478	kAudioDevicePropertyStreams,
479	&outSize, NULL
480	);
481
482	if(res) {
483	std::cerr << "Failed to get device streams: " << res << std::endl;
484	return;
485	}
486
487	UInt32 streamNumber = outSize / sizeof(AudioStreamID);
488	if(streamNumber < 1) {
489	std::cerr << "No streams found" << std::endl;
490	return;
491	}
492
493	if(streamNumber * sizeof(AudioStreamID) != outSize) {
494	std::cerr << "Invalid AudioStreamID size. This is a bug!" << std::endl;
495	return;
496	}
497
498	AudioStreamID* streams = new AudioStreamID[streamNumber];
499
500	res = AudioDeviceGetProperty (
501	pDev->GetID(), 0, false,
502	kAudioDevicePropertyStreams,
503	&outSize, streams
504	);
505
506	if(res) {
507	std::cerr << "Failed to get stream IDs: " << res << std::endl;
508	delete [] streams;
509	return;
510	}
511
512	for(int i = 0; i < streamNumber; i++) {
513	UInt32 inStream;
514
515	res = AudioStreamGetProperty (
516	streams[i], 0, kAudioStreamPropertyDirection, &outSize, &inStream
517	);
518
519	if(res) {
520	std::cerr << "Failed to get stream direction: " << res << std::endl;
521	continue;
522	}
523
524	//pDev->AudioStreams.push_back(CAAudioStream(inStream, chns));
525	}
526
527	delete [] streams;
528	}*/
529
530	void CAAudioDeviceListModel::GetSamplerates(CAAudioDeviceModel* pDev) {
531	UInt32 outSize;
532
533	// Get current nominal sample rate
534	outSize = sizeof(Float64);
535	Float64 srate;
536
537	OSStatus res = AudioDeviceGetProperty (
538	pDev->GetID(), 0, false,
539	kAudioDevicePropertyNominalSampleRate,
540	&outSize, &srate
541	);
542
543	if(res) std::cerr << "Failed to get default samplerate: " << res << std::endl;
544	else pDev->DefaultSamplerate = srate;
545	///////
546
547	res = AudioDeviceGetPropertyInfo (
548	pDev->GetID(), 0, false,
549	kAudioDevicePropertyAvailableNominalSampleRates,
550	&outSize, NULL
551	);
552
553	if(res) {
554	std::cerr << "Failed to get nominal samplerates: " << res << std::endl;
555	return;
556	}
557
558	UInt32 rangeNumber = outSize / sizeof(AudioValueRange);
559	if(rangeNumber < 1) {
560	std::cerr << "No nominal samplerates found" << std::endl;
561	return;
562	}
563
564	if(rangeNumber * sizeof(AudioValueRange) != outSize) {
565	std::cerr << "Invalid AudioValueRange size. This is a bug!" << std::endl;
566	return;
567	}
568
569	AudioValueRange* ranges = new AudioValueRange[rangeNumber];
570
571	res = AudioDeviceGetProperty (
572	pDev->GetID(), 0, false,
573	kAudioDevicePropertyAvailableNominalSampleRates,
574	&outSize, ranges
575	);
576
577	if(res) {
578	std::cerr << "Failed to get samplerate ranges: " << res << std::endl;
579	delete [] ranges;
580	return;
581	}
582
583	for(int i = 0; i < rangeNumber; i++) {
584	// FIXME: might be ranges of valid samplerates
585	UInt32 min = (UInt32)ranges[i].mMinimum;
586	UInt32 max = (UInt32)ranges[i].mMaximum;
587	pDev->NominalSamplerates.push_back(min);
588	if(min != max) pDev->NominalSamplerates.push_back(max);
589	}
590
591	delete [] ranges;
592	}
593	} // namespace LinuxSampler