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	schoenebeck	53	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	schoenebeck	61	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	53	* *
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	schoenebeck	123	#include <sstream>
24
25	schoenebeck	53	#include "Sampler.h"
26
27	schoenebeck	203	#include "drivers/audio/AudioOutputDeviceFactory.h"
28			#include "drivers/midi/MidiInputDeviceFactory.h"
29	schoenebeck	53	#include "engines/gig/Engine.h"
30	senkov	359	#include "network/lscpserver.h"
31	schoenebeck	53
32			namespace LinuxSampler {
33
34			// ******************************************************************
35			// * SamplerChannel
36
37			SamplerChannel::SamplerChannel(Sampler* pS) {
38			pSampler = pS;
39			pEngine = NULL;
40	capela	159	pMidiInputDevice = NULL;
41	schoenebeck	53	pAudioOutputDevice = NULL;
42	capela	159	midiPort = 0;
43	schoenebeck	221	midiChannel = MidiInputPort::midi_chan_all;
44	schoenebeck	53	iIndex = -1;
45			}
46
47			SamplerChannel::~SamplerChannel() {
48			if (pEngine) {
49	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
50	senkov	155	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
51	schoenebeck	53	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
52			delete pEngine;
53			}
54			}
55
56	schoenebeck	64	void SamplerChannel::LoadEngine(Engine::type_t EngineType) {
57			dmsg(2,("SamplerChannel: Loading engine..."));
58	schoenebeck	53
59			// create new engine
60			Engine* pNewEngine = NULL;
61			switch (EngineType) {
62	schoenebeck	64	case Engine::type_gig:
63	schoenebeck	53	pNewEngine = new gig::Engine;
64			break;
65			default:
66			throw LinuxSamplerException("Unknown engine type");
67			}
68
69	capela	159	// dereference midi input port.
70	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
71	schoenebeck	53	// disconnect old engine
72			if (pEngine) {
73	senkov	155	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
74	schoenebeck	53	if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
75			delete pEngine;
76			}
77
78			// connect new engine
79			pEngine = pNewEngine;
80	capela	159	if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);
81	schoenebeck	53	if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
82	schoenebeck	64	dmsg(2,("OK\n"));
83	schoenebeck	53	}
84
85	schoenebeck	123	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
86	schoenebeck	53	// 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	capela	159	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
94			SetMidiInput(pDevice, this->midiPort, this->midiChannel);
95			}
96	schoenebeck	203
97	capela	159	void SamplerChannel::SetMidiInputPort(int MidiPort) {
98			SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
99			}
100	schoenebeck	203
101	schoenebeck	221	void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
102	capela	159	SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
103			}
104	schoenebeck	203
105	schoenebeck	221	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
106	capela	159	// dereference old midi input port.
107	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
108	capela	159	// disconnect old device port
109	senkov	155	if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
110	capela	159	// new device, port and channel
111			pMidiInputDevice = pDevice;
112	schoenebeck	221	this->midiPort = iMidiPort;
113	capela	159	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	schoenebeck	221	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
120	schoenebeck	53	}
121
122			Engine* SamplerChannel::GetEngine() {
123			return pEngine;
124			}
125
126	schoenebeck	221	MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
127	capela	159	return this->midiChannel;
128	schoenebeck	53	}
129
130	capela	159	int SamplerChannel::GetMidiInputPort() {
131	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
132	capela	159	return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
133			}
134
135	schoenebeck	53	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
136			return pAudioOutputDevice;
137			}
138
139	senkov	155	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
140	capela	159	return pMidiInputDevice;
141	senkov	155	}
142
143	schoenebeck	53	uint SamplerChannel::Index() {
144			if (iIndex >= 0) return iIndex;
145
146	schoenebeck	209	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	schoenebeck	53	}
152			}
153
154	schoenebeck	209	throw LinuxSamplerException("Internal error: SamplerChannel index not found");
155	schoenebeck	53	}
156
157	schoenebeck	221	MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
158			MidiInputPort* pMidiInputPort = NULL;
159	capela	159	if (pMidiInputDevice)
160	schoenebeck	221	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
161	capela	159	return pMidiInputPort;
162			}
163	schoenebeck	53
164	schoenebeck	212
165
166	schoenebeck	53	// ******************************************************************
167			// * Sampler
168
169			Sampler::Sampler() {
170			}
171
172			Sampler::~Sampler() {
173	schoenebeck	212	Reset();
174	schoenebeck	53	}
175
176			uint Sampler::SamplerChannels() {
177	schoenebeck	209	return mSamplerChannels.size();
178	schoenebeck	53	}
179
180			SamplerChannel* Sampler::AddSamplerChannel() {
181	schoenebeck	209	// if there's no sampler channel yet
182			if (!mSamplerChannels.size()) {
183			SamplerChannel* pChannel = new SamplerChannel(this);
184			mSamplerChannels[0] = pChannel;
185	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
186	schoenebeck	209	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	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
201	schoenebeck	209	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	schoenebeck	53	SamplerChannel* pChannel = new SamplerChannel(this);
208	schoenebeck	209	mSamplerChannels[lastIndex + 1] = pChannel;
209	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
210	schoenebeck	53	return pChannel;
211			}
212
213			SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
214	schoenebeck	209	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
215	schoenebeck	53	}
216
217	schoenebeck	209	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
218			return mSamplerChannels;
219			}
220
221	schoenebeck	53	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
222	schoenebeck	209	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
223			for (; iterChan != mSamplerChannels.end(); iterChan++) {
224			if (iterChan->second == pSamplerChannel) {
225			mSamplerChannels.erase(iterChan);
226	schoenebeck	53	delete pSamplerChannel;
227	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
228	schoenebeck	53	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	schoenebeck	123	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
240			return AudioOutputDeviceFactory::AvailableDrivers();
241			}
242	schoenebeck	53
243	schoenebeck	123	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
244	schoenebeck	53	// create new device
245	schoenebeck	123	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
246	schoenebeck	53
247	schoenebeck	64	// add new audio device to the audio device list
248	schoenebeck	123	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	schoenebeck	64
255	schoenebeck	53	return pDevice;
256			}
257
258	schoenebeck	123	uint Sampler::AudioOutputDevices() {
259			return mAudioOutputDevices.size();
260	schoenebeck	53	}
261
262	senkov	155	uint Sampler::MidiInputDevices() {
263			return mMidiInputDevices.size();
264			}
265
266	schoenebeck	123	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
267			return mAudioOutputDevices;
268			}
269
270	senkov	155	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
271			return mMidiInputDevices;
272			}
273
274	schoenebeck	123	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	senkov	155	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	schoenebeck	53
302	senkov	155	// 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	schoenebeck	53	}
312	senkov	155	}
313	schoenebeck	53
314	senkov	155	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	schoenebeck	64
326	schoenebeck	53	return pDevice;
327			}
328
329	schoenebeck	212	void Sampler::Reset() {
330			// delete sampler channels
331			try {
332	senkov	329	while (true) {
333			SamplerChannelMap::iterator iter = mSamplerChannels.begin();
334			if (iter == mSamplerChannels.end()) break;
335			RemoveSamplerChannel(iter->second);
336	schoenebeck	212	}
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	senkov	329	while (true) {
346			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
347			if (iter == mMidiInputDevices.end()) break;
348			DestroyMidiInputDevice(iter->second);
349	schoenebeck	212	}
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	senkov	329	while (true) {
359			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
360			if (iter == mAudioOutputDevices.end()) break;
361			DestroyAudioOutputDevice(iter->second);
362	schoenebeck	212	}
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	schoenebeck	53	} // namespace LinuxSampler