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"

namespace LinuxSampler {

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

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

    SamplerChannel::~SamplerChannel() {
        if (pEngine) {
            MidiInputDevice::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.
        MidiInputDevice::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(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
       SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
    }

    void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
        // dereference old midi input port.
        MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // disconnect old device port
        if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
        // new device, port and channel
        pMidiInputDevice = pDevice;
        this->midiPort = MidiPort;
        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(MidiPort) + ".");
    }

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

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

    int SamplerChannel::GetMidiInputPort() {
        MidiInputDevice::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");
    }

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