trunk/src/Sampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005, 2006 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/EngineFactory.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;
        pAudioOutputDevice = NULL;
        pMidiInputDevice   = NULL;
        iMidiPort          = 0;
        midiChannel        = midi_chan_all;
        iIndex             = -1;
    }

    SamplerChannel::~SamplerChannel() {
        if (pEngineChannel) {
            Engine* engine = pEngineChannel->GetEngine();
            if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);

            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
            if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
            if (pEngineChannel) {
                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
                EngineChannelFactory::Destroy(pEngineChannel);

                // reconnect engine if it still exists
                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
            }
        }
    }

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

        // create new engine channel
        EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
        if (!pNewEngineChannel) throw Exception("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(GetMidiInputPort());
        // disconnect old engine channel
        if (pEngineChannel) {
            Engine* engine = pEngineChannel->GetEngine();
            if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);

            if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
            if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
            EngineChannelFactory::Destroy(pEngineChannel);

            // reconnect engine if it still exists
            const std::set<Engine*>& engines = EngineFactory::EngineInstances();
            if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
        }

        // connect new engine channel
        if (pAudioOutputDevice) {
            pNewEngineChannel->Connect(pAudioOutputDevice);
            pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
        }
        if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
        pEngineChannel = pNewEngineChannel;

        // from now on get MIDI device and port from EngineChannel object
        this->pMidiInputDevice = NULL;
        this->iMidiPort        = 0;

        pEngineChannel->StatusChanged(true);

        dmsg(2,("OK\n"));
    }

    void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
        // disconnect old device
        if (pAudioOutputDevice && pEngineChannel) {
            Engine* engine = pEngineChannel->GetEngine();
            pAudioOutputDevice->Disconnect(engine);

            pEngineChannel->DisconnectAudioOutputDevice();

            // reconnect engine if it still exists
            const std::set<Engine*>& engines = EngineFactory::EngineInstances();
            if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
        }

        // connect new device
        pAudioOutputDevice = pDevice;
        if (pEngineChannel) {
            pEngineChannel->Connect(pAudioOutputDevice);
            pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
        }
    }

    void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
       SetMidiInput(pDevice, 0, GetMidiInputChannel());
    }

    void SamplerChannel::SetMidiInputPort(int MidiPort) {
       SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
    }

    void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
       SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
    }

    void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
        if (!pDevice) throw Exception("No MIDI input device assigned.");

        // get old and new midi input port
        MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
        MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);

        // disconnect old device port
        if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
        // remember new device, port and channel if not engine channel yet created
        if (!pEngineChannel) {
            this->pMidiInputDevice = pDevice;
            this->iMidiPort        = iMidiPort;
            this->midiChannel      = MidiChannel;
        }

        // connect new device port
        if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
        // Ooops.
        if (pNewMidiInputPort == NULL)
            throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
    }

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

    midi_chan_t SamplerChannel::GetMidiInputChannel() {
        if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
        return this->midiChannel;
    }

    int SamplerChannel::GetMidiInputPort() {
        MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
        if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
        return iMidiPort;
    }

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

    MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
        if (pEngineChannel)
            pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
        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 Exception("Internal error: SamplerChannel index not found");
    }

    MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
        MidiInputPort* pMidiInputPort = NULL;
        MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
        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 Exception("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();
    }

    std::vector<String> Sampler::AvailableMidiInputDrivers() {
        return MidiInputDeviceFactory::AvailableDrivers();
    }

    std::vector<String> Sampler::AvailableEngineTypes() {
        return EngineFactory::AvailableEngineTypes();
    }

    AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
        // 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 (Exception) {
        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 Exception("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;

                break;
            }
        }
    }

    void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
        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 Exception("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;

                break;
            }
        }
    }

    MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
        // 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;
    }

    int Sampler::GetVoiceCount() {
        int count = 0;
        std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();

        for(; it != EngineFactory::EngineInstances().end(); it++) {
            count += (*it)->VoiceCount();
        }

        return count;
    }

    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	880	* Copyright (C) 2005, 2006 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	iliev	778	#include "engines/EngineFactory.h"
29	schoenebeck	411	#include "engines/EngineChannelFactory.h"
30	schoenebeck	203	#include "drivers/audio/AudioOutputDeviceFactory.h"
31			#include "drivers/midi/MidiInputDeviceFactory.h"
32	senkov	359	#include "network/lscpserver.h"
33	schoenebeck	53
34			namespace LinuxSampler {
35
36			// ******************************************************************
37			// * SamplerChannel
38
39			SamplerChannel::SamplerChannel(Sampler* pS) {
40			pSampler = pS;
41	schoenebeck	411	pEngineChannel = NULL;
42	schoenebeck	675	pAudioOutputDevice = NULL;
43	capela	159	pMidiInputDevice = NULL;
44	schoenebeck	675	iMidiPort = 0;
45			midiChannel = midi_chan_all;
46	schoenebeck	53	iIndex = -1;
47			}
48
49			SamplerChannel::~SamplerChannel() {
50	schoenebeck	411	if (pEngineChannel) {
51	persson	840	Engine* engine = pEngineChannel->GetEngine();
52			if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
53
54	schoenebeck	675	MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
55	schoenebeck	411	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
56	schoenebeck	420	if (pEngineChannel) {
57			if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
58	schoenebeck	660	EngineChannelFactory::Destroy(pEngineChannel);
59	persson	840
60			// reconnect engine if it still exists
61			const std::set<Engine*>& engines = EngineFactory::EngineInstances();
62			if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
63	schoenebeck	420	}
64	schoenebeck	53	}
65			}
66
67	schoenebeck	880	void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
68	schoenebeck	411	dmsg(2,("SamplerChannel: Assigning engine type..."));
69	schoenebeck	53
70	schoenebeck	411	// create new engine channel
71			EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
72	schoenebeck	880	if (!pNewEngineChannel) throw Exception("Unknown engine type");
73	schoenebeck	53
74	schoenebeck	660	//FIXME: hack to allow fast retrieval of engine channel's sampler channel index
75			pNewEngineChannel->iSamplerChannelIndex = Index();
76
77	capela	159	// dereference midi input port.
78	schoenebeck	675	MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
79			// disconnect old engine channel
80	schoenebeck	411	if (pEngineChannel) {
81	persson	840	Engine* engine = pEngineChannel->GetEngine();
82			if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
83
84	schoenebeck	411	if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
85	schoenebeck	412	if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
86	schoenebeck	660	EngineChannelFactory::Destroy(pEngineChannel);
87	persson	840
88			// reconnect engine if it still exists
89			const std::set<Engine*>& engines = EngineFactory::EngineInstances();
90			if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
91	schoenebeck	53	}
92
93	schoenebeck	411	// connect new engine channel
94	schoenebeck	412	if (pAudioOutputDevice) {
95			pNewEngineChannel->Connect(pAudioOutputDevice);
96			pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
97			}
98	persson	846	if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
99	schoenebeck	675	pEngineChannel = pNewEngineChannel;
100
101			// from now on get MIDI device and port from EngineChannel object
102			this->pMidiInputDevice = NULL;
103			this->iMidiPort = 0;
104
105	iliev	730	pEngineChannel->StatusChanged(true);
106
107	schoenebeck	64	dmsg(2,("OK\n"));
108	schoenebeck	53	}
109
110	schoenebeck	123	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
111	schoenebeck	53	// disconnect old device
112	persson	840	if (pAudioOutputDevice && pEngineChannel) {
113			Engine* engine = pEngineChannel->GetEngine();
114			pAudioOutputDevice->Disconnect(engine);
115
116			pEngineChannel->DisconnectAudioOutputDevice();
117
118			// reconnect engine if it still exists
119			const std::set<Engine*>& engines = EngineFactory::EngineInstances();
120			if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
121			}
122
123	schoenebeck	53	// connect new device
124			pAudioOutputDevice = pDevice;
125	schoenebeck	412	if (pEngineChannel) {
126			pEngineChannel->Connect(pAudioOutputDevice);
127			pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
128			}
129	schoenebeck	53	}
130
131	capela	159	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
132	schoenebeck	675	SetMidiInput(pDevice, 0, GetMidiInputChannel());
133	capela	159	}
134	schoenebeck	203
135	capela	159	void SamplerChannel::SetMidiInputPort(int MidiPort) {
136	schoenebeck	675	SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
137	capela	159	}
138	schoenebeck	203
139	schoenebeck	675	void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
140			SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
141	capela	159	}
142	schoenebeck	203
143	schoenebeck	675	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
144	schoenebeck	880	if (!pDevice) throw Exception("No MIDI input device assigned.");
145	schoenebeck	675
146			// get old and new midi input port
147			MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
148			MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
149
150	capela	159	// disconnect old device port
151	schoenebeck	675	if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
152			// remember new device, port and channel if not engine channel yet created
153			if (!pEngineChannel) {
154			this->pMidiInputDevice = pDevice;
155			this->iMidiPort = iMidiPort;
156			this->midiChannel = MidiChannel;
157			}
158
159	capela	159	// connect new device port
160	schoenebeck	675	if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
161	capela	159	// Ooops.
162	schoenebeck	675	if (pNewMidiInputPort == NULL)
163	schoenebeck	880	throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
164	schoenebeck	53	}
165
166	schoenebeck	411	EngineChannel* SamplerChannel::GetEngineChannel() {
167			return pEngineChannel;
168	schoenebeck	53	}
169
170	schoenebeck	675	midi_chan_t SamplerChannel::GetMidiInputChannel() {
171			if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
172	capela	159	return this->midiChannel;
173	schoenebeck	53	}
174
175	capela	159	int SamplerChannel::GetMidiInputPort() {
176	schoenebeck	675	MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
177			if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
178			return iMidiPort;
179	capela	159	}
180
181	schoenebeck	53	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
182			return pAudioOutputDevice;
183			}
184
185	senkov	155	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
186	schoenebeck	675	if (pEngineChannel)
187			pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
188	capela	159	return pMidiInputDevice;
189	senkov	155	}
190
191	schoenebeck	53	uint SamplerChannel::Index() {
192			if (iIndex >= 0) return iIndex;
193
194	schoenebeck	209	Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
195			for (; iter != pSampler->mSamplerChannels.end(); iter++) {
196			if (iter->second == this) {
197			iIndex = iter->first;
198			return iIndex;
199	schoenebeck	53	}
200			}
201
202	schoenebeck	880	throw Exception("Internal error: SamplerChannel index not found");
203	schoenebeck	53	}
204
205	schoenebeck	675	MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
206	schoenebeck	221	MidiInputPort* pMidiInputPort = NULL;
207	schoenebeck	675	MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
208	capela	159	if (pMidiInputDevice)
209	schoenebeck	221	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
210	capela	159	return pMidiInputPort;
211			}
212	schoenebeck	53
213	schoenebeck	212
214
215	schoenebeck	53	// ******************************************************************
216			// * Sampler
217
218			Sampler::Sampler() {
219			}
220
221			Sampler::~Sampler() {
222	schoenebeck	212	Reset();
223	schoenebeck	53	}
224
225			uint Sampler::SamplerChannels() {
226	schoenebeck	209	return mSamplerChannels.size();
227	schoenebeck	53	}
228
229			SamplerChannel* Sampler::AddSamplerChannel() {
230	schoenebeck	209	// if there's no sampler channel yet
231			if (!mSamplerChannels.size()) {
232			SamplerChannel* pChannel = new SamplerChannel(this);
233			mSamplerChannels[0] = pChannel;
234	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));
235	schoenebeck	209	return pChannel;
236			}
237
238			// get the highest used sampler channel index
239			uint lastIndex = (--(mSamplerChannels.end()))->first;
240
241			// check if we reached the index limit
242			if (lastIndex + 1 < lastIndex) {
243			// search for an unoccupied sampler channel index starting from 0
244			for (uint i = 0; i < lastIndex; i++) {
245			if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
246			// we found an unused index, so insert the new channel there
247			SamplerChannel* pChannel = new SamplerChannel(this);
248			mSamplerChannels[i] = pChannel;
249	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
250	schoenebeck	209	return pChannel;
251			}
252	schoenebeck	880	throw Exception("Internal error: could not find unoccupied sampler channel index.");
253	schoenebeck	209	}
254
255			// we have not reached the index limit so we just add the channel past the highest index
256	schoenebeck	53	SamplerChannel* pChannel = new SamplerChannel(this);
257	schoenebeck	209	mSamplerChannels[lastIndex + 1] = pChannel;
258	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));
259	schoenebeck	53	return pChannel;
260			}
261
262			SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
263	schoenebeck	209	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
264	schoenebeck	53	}
265
266	schoenebeck	209	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
267			return mSamplerChannels;
268			}
269
270	schoenebeck	53	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
271	schoenebeck	209	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
272			for (; iterChan != mSamplerChannels.end(); iterChan++) {
273			if (iterChan->second == pSamplerChannel) {
274			mSamplerChannels.erase(iterChan);
275	schoenebeck	53	delete pSamplerChannel;
276	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));
277	schoenebeck	53	return;
278			}
279			}
280			}
281
282			void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
283			SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
284			if (!pChannel) return;
285			RemoveSamplerChannel(pChannel);
286			}
287
288	schoenebeck	123	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
289			return AudioOutputDeviceFactory::AvailableDrivers();
290			}
291	schoenebeck	53
292	schoenebeck	900	std::vector<String> Sampler::AvailableMidiInputDrivers() {
293			return MidiInputDeviceFactory::AvailableDrivers();
294			}
295
296			std::vector<String> Sampler::AvailableEngineTypes() {
297			return EngineFactory::AvailableEngineTypes();
298			}
299
300	schoenebeck	880	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
301	schoenebeck	53	// create new device
302	schoenebeck	123	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
303	schoenebeck	53
304	schoenebeck	64	// add new audio device to the audio device list
305	schoenebeck	123	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
306			if (!mAudioOutputDevices[i]) {
307			mAudioOutputDevices[i] = pDevice;
308			break;
309			}
310			}
311	schoenebeck	64
312	schoenebeck	53	return pDevice;
313			}
314
315	schoenebeck	123	uint Sampler::AudioOutputDevices() {
316			return mAudioOutputDevices.size();
317	schoenebeck	53	}
318
319	senkov	155	uint Sampler::MidiInputDevices() {
320			return mMidiInputDevices.size();
321			}
322
323	schoenebeck	123	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
324			return mAudioOutputDevices;
325			}
326
327	senkov	155	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
328			return mMidiInputDevices;
329			}
330
331	schoenebeck	880	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
332	schoenebeck	123	AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
333			for (; iter != mAudioOutputDevices.end(); iter++) {
334			if (iter->second == pDevice) {
335			// check if there are still sampler engines connected to this device
336			for (uint i = 0; i < SamplerChannels(); i++)
337	schoenebeck	880	if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
338	schoenebeck	123
339			// disable device
340			pDevice->Stop();
341
342	persson	837	// remove device from the device list
343			mAudioOutputDevices.erase(iter);
344
345	schoenebeck	123	// destroy and free device from memory
346			delete pDevice;
347	persson	837
348			break;
349	schoenebeck	123	}
350			}
351			}
352
353	schoenebeck	880	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
354	senkov	155	MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
355			for (; iter != mMidiInputDevices.end(); iter++) {
356			if (iter->second == pDevice) {
357			// check if there are still sampler engines connected to this device
358			for (uint i = 0; i < SamplerChannels(); i++)
359	schoenebeck	880	if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
360	schoenebeck	53
361	senkov	155	// disable device
362			pDevice->StopListen();
363
364	persson	837	// remove device from the device list
365			mMidiInputDevices.erase(iter);
366
367	senkov	155	// destroy and free device from memory
368			delete pDevice;
369	persson	837
370			break;
371	senkov	155	}
372	schoenebeck	53	}
373	senkov	155	}
374	schoenebeck	53
375	schoenebeck	880	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
376	senkov	155	// create new device
377	schoenebeck	551	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
378	senkov	155
379			// add new device to the midi device list
380			for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
381			if (!mMidiInputDevices[i]) {
382			mMidiInputDevices[i] = pDevice;
383			break;
384			}
385			}
386	schoenebeck	64
387	schoenebeck	53	return pDevice;
388			}
389
390	iliev	778	int Sampler::GetVoiceCount() {
391			int count = 0;
392			std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
393
394			for(; it != EngineFactory::EngineInstances().end(); it++) {
395			count += (*it)->VoiceCount();
396			}
397
398			return count;
399			}
400
401	schoenebeck	212	void Sampler::Reset() {
402			// delete sampler channels
403			try {
404	senkov	329	while (true) {
405			SamplerChannelMap::iterator iter = mSamplerChannels.begin();
406			if (iter == mSamplerChannels.end()) break;
407			RemoveSamplerChannel(iter->second);
408	schoenebeck	212	}
409			}
410			catch(...) {
411			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
412			exit(EXIT_FAILURE);
413			}
414
415			// delete midi input devices
416			try {
417	senkov	329	while (true) {
418			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
419			if (iter == mMidiInputDevices.end()) break;
420			DestroyMidiInputDevice(iter->second);
421	schoenebeck	212	}
422			}
423			catch(...) {
424			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
425			exit(EXIT_FAILURE);
426			}
427
428			// delete audio output devices
429			try {
430	senkov	329	while (true) {
431			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
432			if (iter == mAudioOutputDevices.end()) break;
433			DestroyAudioOutputDevice(iter->second);
434	schoenebeck	212	}
435			}
436			catch(...) {
437			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
438			exit(EXIT_FAILURE);
439			}
440			}
441
442	schoenebeck	53	} // namespace LinuxSampler