trunk/src/Sampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 Christian Schoenebeck                              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include <sstream>

#include "Sampler.h"

#include "engines/EngineChannelFactory.h"
#include "drivers/audio/AudioOutputDeviceFactory.h"
#include "drivers/midi/MidiInputDeviceFactory.h"
#include "network/lscpserver.h"

namespace LinuxSampler {

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

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

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

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

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

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

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

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

    void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
       SetMidiInput(pDevice, this->midiPort, this->midiChannel);
    }

    void SamplerChannel::SetMidiInputPort(int MidiPort) {
       SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
    }

    void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
       SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
    }

    void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
        // dereference old midi input port.
        MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        // disconnect old device port
        if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
        // new device, port and channel
        pMidiInputDevice = pDevice;
        this->midiPort = iMidiPort;
        this->midiChannel = MidiChannel;
        // connect new device port
        pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
        // Ooops.
        if (pMidiInputPort == NULL)
            throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
    }

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

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

    int SamplerChannel::GetMidiInputPort() {
        MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
        return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
    }

    AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
        return pAudioOutputDevice;
    }

    MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
        return pMidiInputDevice;
    }

    uint SamplerChannel::Index() {
        if (iIndex >= 0) return iIndex;

        Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
        for (; iter != pSampler->mSamplerChannels.end(); iter++) {
            if (iter->second == this) {
                iIndex = iter->first;
                return iIndex;
            }
        }

        throw LinuxSamplerException("Internal error: SamplerChannel index not found");
    }

    MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
        MidiInputPort* pMidiInputPort = NULL;
        if (pMidiInputDevice)
            pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
        return pMidiInputPort;
    }


    // ******************************************************************
    // * Sampler

    Sampler::Sampler() {
    }

    Sampler::~Sampler() {
        Reset();
    }

    uint Sampler::SamplerChannels() {
        return mSamplerChannels.size();
    }

    SamplerChannel* Sampler::AddSamplerChannel() {
        // if there's no sampler channel yet
        if (!mSamplerChannels.size()) {
            SamplerChannel* pChannel = new SamplerChannel(this);
            mSamplerChannels[0] = pChannel;
            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
            return pChannel;
        }

        // get the highest used sampler channel index
        uint lastIndex = (--(mSamplerChannels.end()))->first;

        // check if we reached the index limit
        if (lastIndex + 1 < lastIndex) {
            // search for an unoccupied sampler channel index starting from 0
            for (uint i = 0; i < lastIndex; i++) {
                if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
                // we found an unused index, so insert the new channel there
                SamplerChannel* pChannel = new SamplerChannel(this);
                mSamplerChannels[i] = pChannel;
                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
                return pChannel;
            }
            throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
        }

        // we have not reached the index limit so we just add the channel past the highest index
        SamplerChannel* pChannel = new SamplerChannel(this);
        mSamplerChannels[lastIndex + 1] = pChannel;
        LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
        return pChannel;
    }

    SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
        return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
    }

    std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
        return mSamplerChannels;
    }

    void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
        SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
        for (; iterChan != mSamplerChannels.end(); iterChan++) {
            if (iterChan->second == pSamplerChannel) {
                mSamplerChannels.erase(iterChan);
                delete pSamplerChannel;
                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
                return;
            }
        }
    }

    void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
        SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
        if (!pChannel) return;
        RemoveSamplerChannel(pChannel);
    }

    std::vector<String> Sampler::AvailableAudioOutputDrivers() {
        return AudioOutputDeviceFactory::AvailableDrivers();
    }

    AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
        // create new device
        AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);

        // add new audio device to the audio device list
        for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
            if (!mAudioOutputDevices[i]) {
                mAudioOutputDevices[i] = pDevice;
                break;
            }
        }

        return pDevice;
    }

    uint Sampler::AudioOutputDevices() {
        return mAudioOutputDevices.size();
    }

    uint Sampler::MidiInputDevices() {
        return mMidiInputDevices.size();
    }

    std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
        return mAudioOutputDevices;
    }

    std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
        return mMidiInputDevices;
    }

    void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
        for (; iter != mAudioOutputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // check if there are still sampler engines connected to this device
                for (uint i = 0; i < SamplerChannels(); i++)
                    if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");

                // disable device
                pDevice->Stop();

                // remove device from the device list
                mAudioOutputDevices.erase(iter);

                // destroy and free device from memory
                delete pDevice;
            }
        }
    }

    void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
        for (; iter != mMidiInputDevices.end(); iter++) {
            if (iter->second == pDevice) {
                // check if there are still sampler engines connected to this device
                for (uint i = 0; i < SamplerChannels(); i++)
                    if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");

                // disable device
                pDevice->StopListen();

                // remove device from the device list
                mMidiInputDevices.erase(iter);

                // destroy and free device from memory
                delete pDevice;
            }
        }
    }

    MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
        // create new device
        MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);

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