trunk/src/Sampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner 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 <sstream>

#include "Sampler.h"

#include "drivers/audio/AudioOutputDeviceFactory.h"
#include "drivers/midi/MidiInputDeviceFactory.h"
#include "engines/gig/Engine.h"
#include "network/lscpserver.h"

namespace LinuxSampler {

    // ******************************************************************
    // * SamplerChannel

    SamplerChannel::SamplerChannel(Sampler* pS) {
        pSampler           = pS;
        pEngine            = NULL;
        pMidiInputDevice   = NULL;
        pAudioOutputDevice = NULL;
        midiPort           = 0;
        midiChannel        = MidiInputPort::midi_chan_all;
        iIndex             = -1;
    }

    SamplerChannel::~SamplerChannel() {
        if (pEngine) {
            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
            if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
            if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
            delete pEngine;
        }
    }

    void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
        dmsg(2,("SamplerChannel: Loading engine..."));

        // create new engine
        Engine* pNewEngine = NULL;
        switch (EngineType) {
            case Engine::type_gig:
                pNewEngine = new gig::Engine;
                break;
            default:
                throw LinuxSamplerException("Unknown engine type");
        }

        // dereference midi input port.
        MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // disconnect old engine
        if (pEngine) {
            if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
            if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
            delete pEngine;
        }

        // connect new engine
        pEngine = pNewEngine;
        if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);
        if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
        dmsg(2,("OK\n"));
    }

    void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
        // disconnect old device
        if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);
        // connect new device
        pAudioOutputDevice = pDevice;
        if (pEngine) pAudioOutputDevice->Connect(pEngine);
    }

    void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
       SetMidiInput(pDevice, this->midiPort, this->midiChannel);
    }

    void SamplerChannel::SetMidiInputPort(int MidiPort) {
       SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
    }

    void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
       SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
    }

    void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
        // dereference old midi input port.
        MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // disconnect old device port
        if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
        // new device, port and channel
        pMidiInputDevice = pDevice;
        this->midiPort = iMidiPort;
        this->midiChannel = MidiChannel;
        // connect new device port
        pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);
        // Ooops.
        if (pMidiInputPort == NULL)
            throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
    }

    Engine* SamplerChannel::GetEngine() {
        return pEngine;
    }

    MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
        return this->midiChannel;
    }

    int SamplerChannel::GetMidiInputPort() {
        MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
    }

    AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
        return pAudioOutputDevice;
    }

    MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
        return pMidiInputDevice;
    }

    uint SamplerChannel::Index() {
        if (iIndex >= 0) return iIndex;

        Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
        for (; iter != pSampler->mSamplerChannels.end(); iter++) {
            if (iter->second == this) {
                iIndex = iter->first;
                return iIndex;
            }
        }

        throw LinuxSamplerException("Internal error: SamplerChannel index not found");
    }

    MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
        MidiInputPort* pMidiInputPort = NULL;
        if (pMidiInputDevice)
            pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
        return pMidiInputPort;
    }


    // ******************************************************************
    // * Sampler

    Sampler::Sampler() {
    }

    Sampler::~Sampler() {
        Reset();
    }

    uint Sampler::SamplerChannels() {
        return mSamplerChannels.size();
    }

    SamplerChannel* Sampler::AddSamplerChannel() {
        // if there's no sampler channel yet
        if (!mSamplerChannels.size()) {
            SamplerChannel* pChannel = new SamplerChannel(this);
            mSamplerChannels[0] = pChannel;
            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
            return pChannel;
        }

        // get the highest used sampler channel index
        uint lastIndex = (--(mSamplerChannels.end()))->first;

        // check if we reached the index limit
        if (lastIndex + 1 < lastIndex) {
            // search for an unoccupied sampler channel index starting from 0
            for (uint i = 0; i < lastIndex; i++) {
                if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
                // we found an unused index, so insert the new channel there
                SamplerChannel* pChannel = new SamplerChannel(this);
                mSamplerChannels[i] = pChannel;
                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
                return pChannel;
            }
            throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
        }

        // we have not reached the index limit so we just add the channel past the highest index
        SamplerChannel* pChannel = new SamplerChannel(this);
        mSamplerChannels[lastIndex + 1] = pChannel;
        LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
        return pChannel;
    }

    SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
        return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
    }

    std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
        return mSamplerChannels;
    }

    void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
        SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
        for (; iterChan != mSamplerChannels.end(); iterChan++) {
            if (iterChan->second == pSamplerChannel) {
                mSamplerChannels.erase(iterChan);
                delete pSamplerChannel;
                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
                return;
            }
        }
    }

    void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
        SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
        if (!pChannel) return;
        RemoveSamplerChannel(pChannel);
    }

    std::vector<String> Sampler::AvailableAudioOutputDrivers() {
        return AudioOutputDeviceFactory::AvailableDrivers();
    }

    AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
        // create new device
        AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);

        // add new audio device to the audio device list
        for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
            if (!mAudioOutputDevices[i]) {
                mAudioOutputDevices[i] = pDevice;
                break;
            }
        }

        return pDevice;
    }

    uint Sampler::AudioOutputDevices() {
        return mAudioOutputDevices.size();
    }

    uint Sampler::MidiInputDevices() {
        return mMidiInputDevices.size();
    }

    std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
        return mAudioOutputDevices;
    }

    std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
        return mMidiInputDevices;
    }

    void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
        for (; iter != mAudioOutputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // check if there are still sampler engines connected to this device
                for (uint i = 0; i < SamplerChannels(); i++)
                    if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");

                // disable device
                pDevice->Stop();

                // remove device from the device list
                mAudioOutputDevices.erase(iter);

                // destroy and free device from memory
                delete pDevice;
            }
        }
    }

    void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
        for (; iter != mMidiInputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // check if there are still sampler engines connected to this device
                for (uint i = 0; i < SamplerChannels(); i++)
                    if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");

                // disable device
                pDevice->StopListen();

                // remove device from the device list
                mMidiInputDevices.erase(iter);

                // destroy and free device from memory
                delete pDevice;
            }
        }
    }

    MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
        // create new device
        MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);

        // add new device to the midi device list
        for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
                if (!mMidiInputDevices[i]) {
                        mMidiInputDevices[i] = pDevice;
                        break;
                }
        }

        return pDevice;
    }

    void Sampler::Reset() {
        // delete sampler channels
        try {
            while (true) {
                    SamplerChannelMap::iterator iter = mSamplerChannels.begin();
                    if (iter == mSamplerChannels.end()) break;
                    RemoveSamplerChannel(iter->second);
            }
        }
        catch(...) {
            std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
            exit(EXIT_FAILURE);
        }

        // delete midi input devices
        try {
            while (true) {
                    MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
                    if (iter == mMidiInputDevices.end()) break;
                    DestroyMidiInputDevice(iter->second);
            }
        }
        catch(...) {
            std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
            exit(EXIT_FAILURE);
        }

        // delete audio output devices
        try {
            while (true) {
                    AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
                    if (iter == mAudioOutputDevices.end()) break;
                    DestroyAudioOutputDevice(iter->second);
            }
        }
        catch(...) {
            std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
            exit(EXIT_FAILURE);
        }
    }

} // namespace LinuxSampler
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
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 <sstream>
24
25	#include "Sampler.h"
26
27	#include "drivers/audio/AudioOutputDeviceFactory.h"
28	#include "drivers/midi/MidiInputDeviceFactory.h"
29	#include "engines/gig/Engine.h"
30	#include "network/lscpserver.h"
31
32	namespace LinuxSampler {
33
34	// ******************************************************************
35	// * SamplerChannel
36
37	SamplerChannel::SamplerChannel(Sampler* pS) {
38	pSampler = pS;
39	pEngine = NULL;
40	pMidiInputDevice = NULL;
41	pAudioOutputDevice = NULL;
42	midiPort = 0;
43	midiChannel = MidiInputPort::midi_chan_all;
44	iIndex = -1;
45	}
46
47	SamplerChannel::~SamplerChannel() {
48	if (pEngine) {
49	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
50	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
51	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
52	delete pEngine;
53	}
54	}
55
56	void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
57	dmsg(2,("SamplerChannel: Loading engine..."));
58
59	// create new engine
60	Engine* pNewEngine = NULL;
61	switch (EngineType) {
62	case Engine::type_gig:
63	pNewEngine = new gig::Engine;
64	break;
65	default:
66	throw LinuxSamplerException("Unknown engine type");
67	}
68
69	// dereference midi input port.
70	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
71	// disconnect old engine
72	if (pEngine) {
73	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
74	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
75	delete pEngine;
76	}
77
78	// connect new engine
79	pEngine = pNewEngine;
80	if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);
81	if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
82	dmsg(2,("OK\n"));
83	}
84
85	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
86	// disconnect old device
87	if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);
88	// connect new device
89	pAudioOutputDevice = pDevice;
90	if (pEngine) pAudioOutputDevice->Connect(pEngine);
91	}
92
93	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
94	SetMidiInput(pDevice, this->midiPort, this->midiChannel);
95	}
96
97	void SamplerChannel::SetMidiInputPort(int MidiPort) {
98	SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
99	}
100
101	void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
102	SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
103	}
104
105	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
106	// dereference old midi input port.
107	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
108	// disconnect old device port
109	if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
110	// new device, port and channel
111	pMidiInputDevice = pDevice;
112	this->midiPort = iMidiPort;
113	this->midiChannel = MidiChannel;
114	// connect new device port
115	pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
116	if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);
117	// Ooops.
118	if (pMidiInputPort == NULL)
119	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
120	}
121
122	Engine* SamplerChannel::GetEngine() {
123	return pEngine;
124	}
125
126	MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
127	return this->midiChannel;
128	}
129
130	int SamplerChannel::GetMidiInputPort() {
131	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
132	return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
133	}
134
135	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
136	return pAudioOutputDevice;
137	}
138
139	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
140	return pMidiInputDevice;
141	}
142
143	uint SamplerChannel::Index() {
144	if (iIndex >= 0) return iIndex;
145
146	Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
147	for (; iter != pSampler->mSamplerChannels.end(); iter++) {
148	if (iter->second == this) {
149	iIndex = iter->first;
150	return iIndex;
151	}
152	}
153
154	throw LinuxSamplerException("Internal error: SamplerChannel index not found");
155	}
156
157	MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
158	MidiInputPort* pMidiInputPort = NULL;
159	if (pMidiInputDevice)
160	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
161	return pMidiInputPort;
162	}
163
164
165
166	// ******************************************************************
167	// * Sampler
168
169	Sampler::Sampler() {
170	}
171
172	Sampler::~Sampler() {
173	Reset();
174	}
175
176	uint Sampler::SamplerChannels() {
177	return mSamplerChannels.size();
178	}
179
180	SamplerChannel* Sampler::AddSamplerChannel() {
181	// if there's no sampler channel yet
182	if (!mSamplerChannels.size()) {
183	SamplerChannel* pChannel = new SamplerChannel(this);
184	mSamplerChannels[0] = pChannel;
185	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
186	return pChannel;
187	}
188
189	// get the highest used sampler channel index
190	uint lastIndex = (--(mSamplerChannels.end()))->first;
191
192	// check if we reached the index limit
193	if (lastIndex + 1 < lastIndex) {
194	// search for an unoccupied sampler channel index starting from 0
195	for (uint i = 0; i < lastIndex; i++) {
196	if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
197	// we found an unused index, so insert the new channel there
198	SamplerChannel* pChannel = new SamplerChannel(this);
199	mSamplerChannels[i] = pChannel;
200	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
201	return pChannel;
202	}
203	throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
204	}
205
206	// we have not reached the index limit so we just add the channel past the highest index
207	SamplerChannel* pChannel = new SamplerChannel(this);
208	mSamplerChannels[lastIndex + 1] = pChannel;
209	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
210	return pChannel;
211	}
212
213	SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
214	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
215	}
216
217	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
218	return mSamplerChannels;
219	}
220
221	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
222	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
223	for (; iterChan != mSamplerChannels.end(); iterChan++) {
224	if (iterChan->second == pSamplerChannel) {
225	mSamplerChannels.erase(iterChan);
226	delete pSamplerChannel;
227	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
228	return;
229	}
230	}
231	}
232
233	void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
234	SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
235	if (!pChannel) return;
236	RemoveSamplerChannel(pChannel);
237	}
238
239	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
240	return AudioOutputDeviceFactory::AvailableDrivers();
241	}
242
243	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
244	// create new device
245	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
246
247	// add new audio device to the audio device list
248	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
249	if (!mAudioOutputDevices[i]) {
250	mAudioOutputDevices[i] = pDevice;
251	break;
252	}
253	}
254
255	return pDevice;
256	}
257
258	uint Sampler::AudioOutputDevices() {
259	return mAudioOutputDevices.size();
260	}
261
262	uint Sampler::MidiInputDevices() {
263	return mMidiInputDevices.size();
264	}
265
266	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
267	return mAudioOutputDevices;
268	}
269
270	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
271	return mMidiInputDevices;
272	}
273
274	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
275	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
276	for (; iter != mAudioOutputDevices.end(); iter++) {
277	if (iter->second == pDevice) {
278	// check if there are still sampler engines connected to this device
279	for (uint i = 0; i < SamplerChannels(); i++)
280	if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
281
282	// disable device
283	pDevice->Stop();
284
285	// remove device from the device list
286	mAudioOutputDevices.erase(iter);
287
288	// destroy and free device from memory
289	delete pDevice;
290	}
291	}
292	}
293
294	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
295	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
296	for (; iter != mMidiInputDevices.end(); iter++) {
297	if (iter->second == pDevice) {
298	// check if there are still sampler engines connected to this device
299	for (uint i = 0; i < SamplerChannels(); i++)
300	if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
301
302	// disable device
303	pDevice->StopListen();
304
305	// remove device from the device list
306	mMidiInputDevices.erase(iter);
307
308	// destroy and free device from memory
309	delete pDevice;
310	}
311	}
312	}
313
314	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
315	// create new device
316	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);
317
318	// add new device to the midi device list
319	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
320	if (!mMidiInputDevices[i]) {
321	mMidiInputDevices[i] = pDevice;
322	break;
323	}
324	}
325
326	return pDevice;
327	}
328
329	void Sampler::Reset() {
330	// delete sampler channels
331	try {
332	while (true) {
333	SamplerChannelMap::iterator iter = mSamplerChannels.begin();
334	if (iter == mSamplerChannels.end()) break;
335	RemoveSamplerChannel(iter->second);
336	}
337	}
338	catch(...) {
339	std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
340	exit(EXIT_FAILURE);
341	}
342
343	// delete midi input devices
344	try {
345	while (true) {
346	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
347	if (iter == mMidiInputDevices.end()) break;
348	DestroyMidiInputDevice(iter->second);
349	}
350	}
351	catch(...) {
352	std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
353	exit(EXIT_FAILURE);
354	}
355
356	// delete audio output devices
357	try {
358	while (true) {
359	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
360	if (iter == mAudioOutputDevices.end()) break;
361	DestroyAudioOutputDevice(iter->second);
362	}
363	}
364	catch(...) {
365	std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
366	exit(EXIT_FAILURE);
367	}
368	}
369
370	} // namespace LinuxSampler