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();
                EngineChannelFactory::Destroy(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");

        //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
        pNewEngineChannel->iSamplerChannelIndex = Index();

        // dereference midi input port.
        MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // disconnect old engine
        if (pEngineChannel) {
            if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
            if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
            EngineChannelFactory::Destroy(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_channel_count, 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_channel_count, 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_channel_count, 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_channel_count, 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	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	schoenebeck	420	if (pEngineChannel) {
53			if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
54	schoenebeck	660	EngineChannelFactory::Destroy(pEngineChannel);
55	schoenebeck	420	}
56	schoenebeck	53	}
57			}
58
59	schoenebeck	411	void SamplerChannel::SetEngineType(String EngineType) throw (LinuxSamplerException) {
60			dmsg(2,("SamplerChannel: Assigning engine type..."));
61	schoenebeck	53
62	schoenebeck	411	// create new engine channel
63			EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
64			if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");
65	schoenebeck	53
66	schoenebeck	660	//FIXME: hack to allow fast retrieval of engine channel's sampler channel index
67			pNewEngineChannel->iSamplerChannelIndex = Index();
68
69	capela	159	// dereference midi input port.
70	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
71	schoenebeck	53	// disconnect old engine
72	schoenebeck	411	if (pEngineChannel) {
73			if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
74	schoenebeck	412	if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
75	schoenebeck	660	EngineChannelFactory::Destroy(pEngineChannel);
76	schoenebeck	53	}
77
78	schoenebeck	411	// connect new engine channel
79			pEngineChannel = pNewEngineChannel;
80			if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, this->midiChannel);
81	schoenebeck	412	if (pAudioOutputDevice) {
82			pNewEngineChannel->Connect(pAudioOutputDevice);
83			pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
84			}
85	schoenebeck	64	dmsg(2,("OK\n"));
86	schoenebeck	53	}
87
88	schoenebeck	123	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
89	schoenebeck	53	// disconnect old device
90	schoenebeck	412	if (pAudioOutputDevice && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();
91	schoenebeck	53	// connect new device
92			pAudioOutputDevice = pDevice;
93	schoenebeck	412	if (pEngineChannel) {
94			pEngineChannel->Connect(pAudioOutputDevice);
95			pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
96			}
97	schoenebeck	53	}
98
99	capela	159	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
100			SetMidiInput(pDevice, this->midiPort, this->midiChannel);
101			}
102	schoenebeck	203
103	capela	159	void SamplerChannel::SetMidiInputPort(int MidiPort) {
104			SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
105			}
106	schoenebeck	203
107	schoenebeck	221	void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
108	capela	159	SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
109			}
110	schoenebeck	203
111	schoenebeck	221	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
112	capela	159	// dereference old midi input port.
113	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
114	capela	159	// disconnect old device port
115	schoenebeck	411	if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
116	capela	159	// new device, port and channel
117			pMidiInputDevice = pDevice;
118	schoenebeck	221	this->midiPort = iMidiPort;
119	capela	159	this->midiChannel = MidiChannel;
120			// connect new device port
121			pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
122	schoenebeck	411	if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
123	capela	159	// Ooops.
124			if (pMidiInputPort == NULL)
125	schoenebeck	221	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
126	schoenebeck	53	}
127
128	schoenebeck	411	EngineChannel* SamplerChannel::GetEngineChannel() {
129			return pEngineChannel;
130	schoenebeck	53	}
131
132	schoenebeck	221	MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
133	capela	159	return this->midiChannel;
134	schoenebeck	53	}
135
136	capela	159	int SamplerChannel::GetMidiInputPort() {
137	schoenebeck	221	MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
138	capela	159	return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
139			}
140
141	schoenebeck	53	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
142			return pAudioOutputDevice;
143			}
144
145	senkov	155	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
146	capela	159	return pMidiInputDevice;
147	senkov	155	}
148
149	schoenebeck	53	uint SamplerChannel::Index() {
150			if (iIndex >= 0) return iIndex;
151
152	schoenebeck	209	Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
153			for (; iter != pSampler->mSamplerChannels.end(); iter++) {
154			if (iter->second == this) {
155			iIndex = iter->first;
156			return iIndex;
157	schoenebeck	53	}
158			}
159
160	schoenebeck	209	throw LinuxSamplerException("Internal error: SamplerChannel index not found");
161	schoenebeck	53	}
162
163	schoenebeck	221	MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
164			MidiInputPort* pMidiInputPort = NULL;
165	capela	159	if (pMidiInputDevice)
166	schoenebeck	221	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
167	capela	159	return pMidiInputPort;
168			}
169	schoenebeck	53
170	schoenebeck	212
171
172	schoenebeck	53	// ******************************************************************
173			// * Sampler
174
175			Sampler::Sampler() {
176			}
177
178			Sampler::~Sampler() {
179	schoenebeck	212	Reset();
180	schoenebeck	53	}
181
182			uint Sampler::SamplerChannels() {
183	schoenebeck	209	return mSamplerChannels.size();
184	schoenebeck	53	}
185
186			SamplerChannel* Sampler::AddSamplerChannel() {
187	schoenebeck	209	// if there's no sampler channel yet
188			if (!mSamplerChannels.size()) {
189			SamplerChannel* pChannel = new SamplerChannel(this);
190			mSamplerChannels[0] = pChannel;
191	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));
192	schoenebeck	209	return pChannel;
193			}
194
195			// get the highest used sampler channel index
196			uint lastIndex = (--(mSamplerChannels.end()))->first;
197
198			// check if we reached the index limit
199			if (lastIndex + 1 < lastIndex) {
200			// search for an unoccupied sampler channel index starting from 0
201			for (uint i = 0; i < lastIndex; i++) {
202			if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
203			// we found an unused index, so insert the new channel there
204			SamplerChannel* pChannel = new SamplerChannel(this);
205			mSamplerChannels[i] = pChannel;
206	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
207	schoenebeck	209	return pChannel;
208			}
209			throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
210			}
211
212			// we have not reached the index limit so we just add the channel past the highest index
213	schoenebeck	53	SamplerChannel* pChannel = new SamplerChannel(this);
214	schoenebeck	209	mSamplerChannels[lastIndex + 1] = pChannel;
215	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));
216	schoenebeck	53	return pChannel;
217			}
218
219			SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
220	schoenebeck	209	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
221	schoenebeck	53	}
222
223	schoenebeck	209	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
224			return mSamplerChannels;
225			}
226
227	schoenebeck	53	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
228	schoenebeck	209	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
229			for (; iterChan != mSamplerChannels.end(); iterChan++) {
230			if (iterChan->second == pSamplerChannel) {
231			mSamplerChannels.erase(iterChan);
232	schoenebeck	53	delete pSamplerChannel;
233	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));
234	schoenebeck	53	return;
235			}
236			}
237			}
238
239			void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
240			SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
241			if (!pChannel) return;
242			RemoveSamplerChannel(pChannel);
243			}
244
245	schoenebeck	123	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
246			return AudioOutputDeviceFactory::AvailableDrivers();
247			}
248	schoenebeck	53
249	schoenebeck	123	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
250	schoenebeck	53	// create new device
251	schoenebeck	123	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
252	schoenebeck	53
253	schoenebeck	64	// add new audio device to the audio device list
254	schoenebeck	123	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
255			if (!mAudioOutputDevices[i]) {
256			mAudioOutputDevices[i] = pDevice;
257			break;
258			}
259			}
260	schoenebeck	64
261	schoenebeck	53	return pDevice;
262			}
263
264	schoenebeck	123	uint Sampler::AudioOutputDevices() {
265			return mAudioOutputDevices.size();
266	schoenebeck	53	}
267
268	senkov	155	uint Sampler::MidiInputDevices() {
269			return mMidiInputDevices.size();
270			}
271
272	schoenebeck	123	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
273			return mAudioOutputDevices;
274			}
275
276	senkov	155	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
277			return mMidiInputDevices;
278			}
279
280	schoenebeck	123	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
281			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
282			for (; iter != mAudioOutputDevices.end(); iter++) {
283			if (iter->second == pDevice) {
284			// check if there are still sampler engines connected to this device
285			for (uint i = 0; i < SamplerChannels(); i++)
286			if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
287
288			// disable device
289			pDevice->Stop();
290
291			// remove device from the device list
292			mAudioOutputDevices.erase(iter);
293
294			// destroy and free device from memory
295			delete pDevice;
296			}
297			}
298			}
299
300	senkov	155	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
301			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
302			for (; iter != mMidiInputDevices.end(); iter++) {
303			if (iter->second == pDevice) {
304			// check if there are still sampler engines connected to this device
305			for (uint i = 0; i < SamplerChannels(); i++)
306			if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
307	schoenebeck	53
308	senkov	155	// disable device
309			pDevice->StopListen();
310
311			// remove device from the device list
312			mMidiInputDevices.erase(iter);
313
314			// destroy and free device from memory
315			delete pDevice;
316			}
317	schoenebeck	53	}
318	senkov	155	}
319	schoenebeck	53
320	senkov	155	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
321			// create new device
322	schoenebeck	551	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
323	senkov	155
324			// add new device to the midi device list
325			for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
326			if (!mMidiInputDevices[i]) {
327			mMidiInputDevices[i] = pDevice;
328			break;
329			}
330			}
331	schoenebeck	64
332	schoenebeck	53	return pDevice;
333			}
334
335	schoenebeck	212	void Sampler::Reset() {
336			// delete sampler channels
337			try {
338	senkov	329	while (true) {
339			SamplerChannelMap::iterator iter = mSamplerChannels.begin();
340			if (iter == mSamplerChannels.end()) break;
341			RemoveSamplerChannel(iter->second);
342	schoenebeck	212	}
343			}
344			catch(...) {
345			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
346			exit(EXIT_FAILURE);
347			}
348
349			// delete midi input devices
350			try {
351	senkov	329	while (true) {
352			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
353			if (iter == mMidiInputDevices.end()) break;
354			DestroyMidiInputDevice(iter->second);
355	schoenebeck	212	}
356			}
357			catch(...) {
358			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
359			exit(EXIT_FAILURE);
360			}
361
362			// delete audio output devices
363			try {
364	senkov	329	while (true) {
365			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
366			if (iter == mAudioOutputDevices.end()) break;
367			DestroyAudioOutputDevice(iter->second);
368	schoenebeck	212	}
369			}
370			catch(...) {
371			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
372			exit(EXIT_FAILURE);
373			}
374			}
375
376	schoenebeck	53	} // namespace LinuxSampler