trunk/src/Sampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 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 "engines/EngineChannelFactory.h"
#include "drivers/audio/AudioOutputDeviceFactory.h"
#include "drivers/midi/MidiInputDeviceFactory.h"
#include "network/lscpserver.h"

namespace LinuxSampler {

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

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

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

    void SamplerChannel::SetEngineType(String EngineType) throw (LinuxSamplerException) {
        dmsg(2,("SamplerChannel: Assigning engine type..."));

        // create new engine channel
        EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
        if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");

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

        // connect new engine channel
        pEngineChannel = pNewEngineChannel;
        if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, this->midiChannel);
        if (pAudioOutputDevice) {
            pNewEngineChannel->Connect(pAudioOutputDevice);
            pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
        }
        dmsg(2,("OK\n"));
    }

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

    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 && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
        // new device, port and channel
        pMidiInputDevice = pDevice;
        this->midiPort = iMidiPort;
        this->midiChannel = MidiChannel;
        // connect new device port
        pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
        // Ooops.
        if (pMidiInputPort == NULL)
            throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
    }

    EngineChannel* SamplerChannel::GetEngineChannel() {
        return pEngineChannel;
    }

    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, this);

        // 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	* Copyright (C) 2005 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 <sstream>
25
26	#include "Sampler.h"
27
28	#include "engines/EngineChannelFactory.h"
29	#include "drivers/audio/AudioOutputDeviceFactory.h"
30	#include "drivers/midi/MidiInputDeviceFactory.h"
31	#include "network/lscpserver.h"
32
33	namespace LinuxSampler {
34
35	// ******************************************************************
36	// * SamplerChannel
37
38	SamplerChannel::SamplerChannel(Sampler* pS) {
39	pSampler = pS;
40	pEngineChannel = NULL;
41	pMidiInputDevice = NULL;
42	pAudioOutputDevice = NULL;
43	midiPort = 0;
44	midiChannel = MidiInputPort::midi_chan_all;
45	iIndex = -1;
46	}
47
48	SamplerChannel::~SamplerChannel() {
49	if (pEngineChannel) {
50	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
51	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
52	if (pEngineChannel) {
53	if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
54	delete pEngineChannel;
55	}
56	}
57	}
58
59	void SamplerChannel::SetEngineType(String EngineType) throw (LinuxSamplerException) {
60	dmsg(2,("SamplerChannel: Assigning engine type..."));
61
62	// create new engine channel
63	EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
64	if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");
65
66	// dereference midi input port.
67	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
68	// disconnect old engine
69	if (pEngineChannel) {
70	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
71	if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
72	delete pEngineChannel;
73	}
74
75	// connect new engine channel
76	pEngineChannel = pNewEngineChannel;
77	if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, this->midiChannel);
78	if (pAudioOutputDevice) {
79	pNewEngineChannel->Connect(pAudioOutputDevice);
80	pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
81	}
82	dmsg(2,("OK\n"));
83	}
84
85	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
86	// disconnect old device
87	if (pAudioOutputDevice && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();
88	// connect new device
89	pAudioOutputDevice = pDevice;
90	if (pEngineChannel) {
91	pEngineChannel->Connect(pAudioOutputDevice);
92	pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
93	}
94	}
95
96	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
97	SetMidiInput(pDevice, this->midiPort, this->midiChannel);
98	}
99
100	void SamplerChannel::SetMidiInputPort(int MidiPort) {
101	SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
102	}
103
104	void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
105	SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
106	}
107
108	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
109	// dereference old midi input port.
110	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
111	// disconnect old device port
112	if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
113	// new device, port and channel
114	pMidiInputDevice = pDevice;
115	this->midiPort = iMidiPort;
116	this->midiChannel = MidiChannel;
117	// connect new device port
118	pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
119	if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
120	// Ooops.
121	if (pMidiInputPort == NULL)
122	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
123	}
124
125	EngineChannel* SamplerChannel::GetEngineChannel() {
126	return pEngineChannel;
127	}
128
129	MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
130	return this->midiChannel;
131	}
132
133	int SamplerChannel::GetMidiInputPort() {
134	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
135	return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
136	}
137
138	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
139	return pAudioOutputDevice;
140	}
141
142	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
143	return pMidiInputDevice;
144	}
145
146	uint SamplerChannel::Index() {
147	if (iIndex >= 0) return iIndex;
148
149	Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
150	for (; iter != pSampler->mSamplerChannels.end(); iter++) {
151	if (iter->second == this) {
152	iIndex = iter->first;
153	return iIndex;
154	}
155	}
156
157	throw LinuxSamplerException("Internal error: SamplerChannel index not found");
158	}
159
160	MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
161	MidiInputPort* pMidiInputPort = NULL;
162	if (pMidiInputDevice)
163	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
164	return pMidiInputPort;
165	}
166
167
168
169	// ******************************************************************
170	// * Sampler
171
172	Sampler::Sampler() {
173	}
174
175	Sampler::~Sampler() {
176	Reset();
177	}
178
179	uint Sampler::SamplerChannels() {
180	return mSamplerChannels.size();
181	}
182
183	SamplerChannel* Sampler::AddSamplerChannel() {
184	// if there's no sampler channel yet
185	if (!mSamplerChannels.size()) {
186	SamplerChannel* pChannel = new SamplerChannel(this);
187	mSamplerChannels[0] = pChannel;
188	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
189	return pChannel;
190	}
191
192	// get the highest used sampler channel index
193	uint lastIndex = (--(mSamplerChannels.end()))->first;
194
195	// check if we reached the index limit
196	if (lastIndex + 1 < lastIndex) {
197	// search for an unoccupied sampler channel index starting from 0
198	for (uint i = 0; i < lastIndex; i++) {
199	if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
200	// we found an unused index, so insert the new channel there
201	SamplerChannel* pChannel = new SamplerChannel(this);
202	mSamplerChannels[i] = pChannel;
203	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
204	return pChannel;
205	}
206	throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
207	}
208
209	// we have not reached the index limit so we just add the channel past the highest index
210	SamplerChannel* pChannel = new SamplerChannel(this);
211	mSamplerChannels[lastIndex + 1] = pChannel;
212	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
213	return pChannel;
214	}
215
216	SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
217	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
218	}
219
220	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
221	return mSamplerChannels;
222	}
223
224	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
225	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
226	for (; iterChan != mSamplerChannels.end(); iterChan++) {
227	if (iterChan->second == pSamplerChannel) {
228	mSamplerChannels.erase(iterChan);
229	delete pSamplerChannel;
230	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
231	return;
232	}
233	}
234	}
235
236	void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
237	SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
238	if (!pChannel) return;
239	RemoveSamplerChannel(pChannel);
240	}
241
242	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
243	return AudioOutputDeviceFactory::AvailableDrivers();
244	}
245
246	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
247	// create new device
248	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
249
250	// add new audio device to the audio device list
251	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
252	if (!mAudioOutputDevices[i]) {
253	mAudioOutputDevices[i] = pDevice;
254	break;
255	}
256	}
257
258	return pDevice;
259	}
260
261	uint Sampler::AudioOutputDevices() {
262	return mAudioOutputDevices.size();
263	}
264
265	uint Sampler::MidiInputDevices() {
266	return mMidiInputDevices.size();
267	}
268
269	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
270	return mAudioOutputDevices;
271	}
272
273	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
274	return mMidiInputDevices;
275	}
276
277	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
278	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
279	for (; iter != mAudioOutputDevices.end(); iter++) {
280	if (iter->second == pDevice) {
281	// check if there are still sampler engines connected to this device
282	for (uint i = 0; i < SamplerChannels(); i++)
283	if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
284
285	// disable device
286	pDevice->Stop();
287
288	// remove device from the device list
289	mAudioOutputDevices.erase(iter);
290
291	// destroy and free device from memory
292	delete pDevice;
293	}
294	}
295	}
296
297	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
298	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
299	for (; iter != mMidiInputDevices.end(); iter++) {
300	if (iter->second == pDevice) {
301	// check if there are still sampler engines connected to this device
302	for (uint i = 0; i < SamplerChannels(); i++)
303	if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
304
305	// disable device
306	pDevice->StopListen();
307
308	// remove device from the device list
309	mMidiInputDevices.erase(iter);
310
311	// destroy and free device from memory
312	delete pDevice;
313	}
314	}
315	}
316
317	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
318	// create new device
319	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
320
321	// add new device to the midi device list
322	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
323	if (!mMidiInputDevices[i]) {
324	mMidiInputDevices[i] = pDevice;
325	break;
326	}
327	}
328
329	return pDevice;
330	}
331
332	void Sampler::Reset() {
333	// delete sampler channels
334	try {
335	while (true) {
336	SamplerChannelMap::iterator iter = mSamplerChannels.begin();
337	if (iter == mSamplerChannels.end()) break;
338	RemoveSamplerChannel(iter->second);
339	}
340	}
341	catch(...) {
342	std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
343	exit(EXIT_FAILURE);
344	}
345
346	// delete midi input devices
347	try {
348	while (true) {
349	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
350	if (iter == mMidiInputDevices.end()) break;
351	DestroyMidiInputDevice(iter->second);
352	}
353	}
354	catch(...) {
355	std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
356	exit(EXIT_FAILURE);
357	}
358
359	// delete audio output devices
360	try {
361	while (true) {
362	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
363	if (iter == mAudioOutputDevices.end()) break;
364	DestroyAudioOutputDevice(iter->second);
365	}
366	}
367	catch(...) {
368	std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
369	exit(EXIT_FAILURE);
370	}
371	}
372
373	} // namespace LinuxSampler