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;
        pAudioOutputDevice = NULL;
        pMidiInputDevice   = NULL;
        iMidiPort          = 0;
        midiChannel        = midi_chan_all;
        iIndex             = -1;
    }

    SamplerChannel::~SamplerChannel() {
        if (pEngineChannel) {
            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
            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(GetMidiInputPort());
        // disconnect old engine channel
        if (pEngineChannel) {
            if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
            if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
            EngineChannelFactory::Destroy(pEngineChannel);
        }

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

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

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