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 (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngineChannel);
            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) pAudioOutputDevice->Disconnect(pEngineChannel);
            delete pEngineChannel;
        }

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

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

    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);

        // 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	411	* Copyright (C) 2005 Christian Schoenebeck *
7	schoenebeck	53	* *
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	schoenebeck	123	#include <sstream>
25
26	schoenebeck	53	#include "Sampler.h"
27
28	schoenebeck	411	#include "engines/EngineChannelFactory.h"
29	schoenebeck	203	#include "drivers/audio/AudioOutputDeviceFactory.h"
30			#include "drivers/midi/MidiInputDeviceFactory.h"
31	senkov	359	#include "network/lscpserver.h"
32	schoenebeck	53
33			namespace LinuxSampler {
34
35			// ******************************************************************
36			// * SamplerChannel
37
38			SamplerChannel::SamplerChannel(Sampler* pS) {
39			pSampler = pS;
40	schoenebeck	411	pEngineChannel = NULL;
41	capela	159	pMidiInputDevice = NULL;
42	schoenebeck	53	pAudioOutputDevice = NULL;
43	capela	159	midiPort = 0;
44	schoenebeck	221	midiChannel = MidiInputPort::midi_chan_all;
45	schoenebeck	53	iIndex = -1;
46			}
47
48			SamplerChannel::~SamplerChannel() {
49	schoenebeck	411	if (pEngineChannel) {
50	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
51	schoenebeck	411	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
52			if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngineChannel);
53			delete pEngineChannel;
54	schoenebeck	53	}
55			}
56
57	schoenebeck	411	void SamplerChannel::SetEngineType(String EngineType) throw (LinuxSamplerException) {
58			dmsg(2,("SamplerChannel: Assigning engine type..."));
59	schoenebeck	53
60	schoenebeck	411	// create new engine channel
61			EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
62			if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");
63	schoenebeck	53
64	capela	159	// dereference midi input port.
65	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
66	schoenebeck	53	// disconnect old engine
67	schoenebeck	411	if (pEngineChannel) {
68			if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
69			if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngineChannel);
70			delete pEngineChannel;
71	schoenebeck	53	}
72
73	schoenebeck	411	// connect new engine channel
74			pEngineChannel = pNewEngineChannel;
75			if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, this->midiChannel);
76			if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngineChannel);
77	schoenebeck	64	dmsg(2,("OK\n"));
78	schoenebeck	53	}
79
80	schoenebeck	123	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
81	schoenebeck	53	// disconnect old device
82	schoenebeck	411	if (pAudioOutputDevice && pEngineChannel) pAudioOutputDevice->Disconnect(pEngineChannel);
83	schoenebeck	53	// connect new device
84			pAudioOutputDevice = pDevice;
85	schoenebeck	411	if (pEngineChannel) pAudioOutputDevice->Connect(pEngineChannel);
86	schoenebeck	53	}
87
88	capela	159	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
89			SetMidiInput(pDevice, this->midiPort, this->midiChannel);
90			}
91	schoenebeck	203
92	capela	159	void SamplerChannel::SetMidiInputPort(int MidiPort) {
93			SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
94			}
95	schoenebeck	203
96	schoenebeck	221	void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
97	capela	159	SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
98			}
99	schoenebeck	203
100	schoenebeck	221	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
101	capela	159	// dereference old midi input port.
102	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
103	capela	159	// disconnect old device port
104	schoenebeck	411	if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
105	capela	159	// new device, port and channel
106			pMidiInputDevice = pDevice;
107	schoenebeck	221	this->midiPort = iMidiPort;
108	capela	159	this->midiChannel = MidiChannel;
109			// connect new device port
110			pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
111	schoenebeck	411	if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
112	capela	159	// Ooops.
113			if (pMidiInputPort == NULL)
114	schoenebeck	221	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
115	schoenebeck	53	}
116
117	schoenebeck	411	EngineChannel* SamplerChannel::GetEngineChannel() {
118			return pEngineChannel;
119	schoenebeck	53	}
120
121	schoenebeck	221	MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
122	capela	159	return this->midiChannel;
123	schoenebeck	53	}
124
125	capela	159	int SamplerChannel::GetMidiInputPort() {
126	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
127	capela	159	return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
128			}
129
130	schoenebeck	53	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
131			return pAudioOutputDevice;
132			}
133
134	senkov	155	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
135	capela	159	return pMidiInputDevice;
136	senkov	155	}
137
138	schoenebeck	53	uint SamplerChannel::Index() {
139			if (iIndex >= 0) return iIndex;
140
141	schoenebeck	209	Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
142			for (; iter != pSampler->mSamplerChannels.end(); iter++) {
143			if (iter->second == this) {
144			iIndex = iter->first;
145			return iIndex;
146	schoenebeck	53	}
147			}
148
149	schoenebeck	209	throw LinuxSamplerException("Internal error: SamplerChannel index not found");
150	schoenebeck	53	}
151
152	schoenebeck	221	MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
153			MidiInputPort* pMidiInputPort = NULL;
154	capela	159	if (pMidiInputDevice)
155	schoenebeck	221	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
156	capela	159	return pMidiInputPort;
157			}
158	schoenebeck	53
159	schoenebeck	212
160
161	schoenebeck	53	// ******************************************************************
162			// * Sampler
163
164			Sampler::Sampler() {
165			}
166
167			Sampler::~Sampler() {
168	schoenebeck	212	Reset();
169	schoenebeck	53	}
170
171			uint Sampler::SamplerChannels() {
172	schoenebeck	209	return mSamplerChannels.size();
173	schoenebeck	53	}
174
175			SamplerChannel* Sampler::AddSamplerChannel() {
176	schoenebeck	209	// if there's no sampler channel yet
177			if (!mSamplerChannels.size()) {
178			SamplerChannel* pChannel = new SamplerChannel(this);
179			mSamplerChannels[0] = pChannel;
180	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
181	schoenebeck	209	return pChannel;
182			}
183
184			// get the highest used sampler channel index
185			uint lastIndex = (--(mSamplerChannels.end()))->first;
186
187			// check if we reached the index limit
188			if (lastIndex + 1 < lastIndex) {
189			// search for an unoccupied sampler channel index starting from 0
190			for (uint i = 0; i < lastIndex; i++) {
191			if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
192			// we found an unused index, so insert the new channel there
193			SamplerChannel* pChannel = new SamplerChannel(this);
194			mSamplerChannels[i] = pChannel;
195	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
196	schoenebeck	209	return pChannel;
197			}
198			throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
199			}
200
201			// we have not reached the index limit so we just add the channel past the highest index
202	schoenebeck	53	SamplerChannel* pChannel = new SamplerChannel(this);
203	schoenebeck	209	mSamplerChannels[lastIndex + 1] = pChannel;
204	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
205	schoenebeck	53	return pChannel;
206			}
207
208			SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
209	schoenebeck	209	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
210	schoenebeck	53	}
211
212	schoenebeck	209	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
213			return mSamplerChannels;
214			}
215
216	schoenebeck	53	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
217	schoenebeck	209	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
218			for (; iterChan != mSamplerChannels.end(); iterChan++) {
219			if (iterChan->second == pSamplerChannel) {
220			mSamplerChannels.erase(iterChan);
221	schoenebeck	53	delete pSamplerChannel;
222	senkov	359	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
223	schoenebeck	53	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	senkov	329	while (true) {
328			SamplerChannelMap::iterator iter = mSamplerChannels.begin();
329			if (iter == mSamplerChannels.end()) break;
330			RemoveSamplerChannel(iter->second);
331	schoenebeck	212	}
332			}
333			catch(...) {
334			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
335			exit(EXIT_FAILURE);
336			}
337
338			// delete midi input devices
339			try {
340	senkov	329	while (true) {
341			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
342			if (iter == mMidiInputDevices.end()) break;
343			DestroyMidiInputDevice(iter->second);
344	schoenebeck	212	}
345			}
346			catch(...) {
347			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
348			exit(EXIT_FAILURE);
349			}
350
351			// delete audio output devices
352			try {
353	senkov	329	while (true) {
354			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
355			if (iter == mAudioOutputDevices.end()) break;
356			DestroyAudioOutputDevice(iter->second);
357	schoenebeck	212	}
358			}
359			catch(...) {
360			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
361			exit(EXIT_FAILURE);
362			}
363			}
364
365	schoenebeck	53	} // namespace LinuxSampler