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;

        pEngineChannel->StatusChanged(true);

        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	iliev	730	pEngineChannel->StatusChanged(true);
91
92	schoenebeck	64	dmsg(2,("OK\n"));
93	schoenebeck	53	}
94
95	schoenebeck	123	void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
96	schoenebeck	53	// disconnect old device
97	schoenebeck	412	if (pAudioOutputDevice && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();
98	schoenebeck	53	// connect new device
99			pAudioOutputDevice = pDevice;
100	schoenebeck	412	if (pEngineChannel) {
101			pEngineChannel->Connect(pAudioOutputDevice);
102			pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
103			}
104	schoenebeck	53	}
105
106	capela	159	void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
107	schoenebeck	675	SetMidiInput(pDevice, 0, GetMidiInputChannel());
108	capela	159	}
109	schoenebeck	203
110	capela	159	void SamplerChannel::SetMidiInputPort(int MidiPort) {
111	schoenebeck	675	SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
112	capela	159	}
113	schoenebeck	203
114	schoenebeck	675	void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
115			SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
116	capela	159	}
117	schoenebeck	203
118	schoenebeck	675	void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
119			if (!pDevice) throw LinuxSamplerException("No MIDI input device assigned.");
120
121			// get old and new midi input port
122			MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
123			MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
124
125	capela	159	// disconnect old device port
126	schoenebeck	675	if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
127			// remember new device, port and channel if not engine channel yet created
128			if (!pEngineChannel) {
129			this->pMidiInputDevice = pDevice;
130			this->iMidiPort = iMidiPort;
131			this->midiChannel = MidiChannel;
132			}
133
134	capela	159	// connect new device port
135	schoenebeck	675	if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
136	capela	159	// Ooops.
137	schoenebeck	675	if (pNewMidiInputPort == NULL)
138	schoenebeck	221	throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
139	schoenebeck	53	}
140
141	schoenebeck	411	EngineChannel* SamplerChannel::GetEngineChannel() {
142			return pEngineChannel;
143	schoenebeck	53	}
144
145	schoenebeck	675	midi_chan_t SamplerChannel::GetMidiInputChannel() {
146			if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
147	capela	159	return this->midiChannel;
148	schoenebeck	53	}
149
150	capela	159	int SamplerChannel::GetMidiInputPort() {
151	schoenebeck	675	MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
152			if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
153			return iMidiPort;
154	capela	159	}
155
156	schoenebeck	53	AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
157			return pAudioOutputDevice;
158			}
159
160	senkov	155	MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
161	schoenebeck	675	if (pEngineChannel)
162			pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
163	capela	159	return pMidiInputDevice;
164	senkov	155	}
165
166	schoenebeck	53	uint SamplerChannel::Index() {
167			if (iIndex >= 0) return iIndex;
168
169	schoenebeck	209	Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
170			for (; iter != pSampler->mSamplerChannels.end(); iter++) {
171			if (iter->second == this) {
172			iIndex = iter->first;
173			return iIndex;
174	schoenebeck	53	}
175			}
176
177	schoenebeck	209	throw LinuxSamplerException("Internal error: SamplerChannel index not found");
178	schoenebeck	53	}
179
180	schoenebeck	675	MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
181	schoenebeck	221	MidiInputPort* pMidiInputPort = NULL;
182	schoenebeck	675	MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
183	capela	159	if (pMidiInputDevice)
184	schoenebeck	221	pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
185	capela	159	return pMidiInputPort;
186			}
187	schoenebeck	53
188	schoenebeck	212
189
190	schoenebeck	53	// ******************************************************************
191			// * Sampler
192
193			Sampler::Sampler() {
194			}
195
196			Sampler::~Sampler() {
197	schoenebeck	212	Reset();
198	schoenebeck	53	}
199
200			uint Sampler::SamplerChannels() {
201	schoenebeck	209	return mSamplerChannels.size();
202	schoenebeck	53	}
203
204			SamplerChannel* Sampler::AddSamplerChannel() {
205	schoenebeck	209	// if there's no sampler channel yet
206			if (!mSamplerChannels.size()) {
207			SamplerChannel* pChannel = new SamplerChannel(this);
208			mSamplerChannels[0] = pChannel;
209	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));
210	schoenebeck	209	return pChannel;
211			}
212
213			// get the highest used sampler channel index
214			uint lastIndex = (--(mSamplerChannels.end()))->first;
215
216			// check if we reached the index limit
217			if (lastIndex + 1 < lastIndex) {
218			// search for an unoccupied sampler channel index starting from 0
219			for (uint i = 0; i < lastIndex; i++) {
220			if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
221			// we found an unused index, so insert the new channel there
222			SamplerChannel* pChannel = new SamplerChannel(this);
223			mSamplerChannels[i] = pChannel;
224	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
225	schoenebeck	209	return pChannel;
226			}
227			throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
228			}
229
230			// we have not reached the index limit so we just add the channel past the highest index
231	schoenebeck	53	SamplerChannel* pChannel = new SamplerChannel(this);
232	schoenebeck	209	mSamplerChannels[lastIndex + 1] = pChannel;
233	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));
234	schoenebeck	53	return pChannel;
235			}
236
237			SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
238	schoenebeck	209	return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
239	schoenebeck	53	}
240
241	schoenebeck	209	std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
242			return mSamplerChannels;
243			}
244
245	schoenebeck	53	void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
246	schoenebeck	209	SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
247			for (; iterChan != mSamplerChannels.end(); iterChan++) {
248			if (iterChan->second == pSamplerChannel) {
249			mSamplerChannels.erase(iterChan);
250	schoenebeck	53	delete pSamplerChannel;
251	schoenebeck	556	LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));
252	schoenebeck	53	return;
253			}
254			}
255			}
256
257			void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
258			SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
259			if (!pChannel) return;
260			RemoveSamplerChannel(pChannel);
261			}
262
263	schoenebeck	123	std::vector<String> Sampler::AvailableAudioOutputDrivers() {
264			return AudioOutputDeviceFactory::AvailableDrivers();
265			}
266	schoenebeck	53
267	schoenebeck	123	AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
268	schoenebeck	53	// create new device
269	schoenebeck	123	AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
270	schoenebeck	53
271	schoenebeck	64	// add new audio device to the audio device list
272	schoenebeck	123	for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
273			if (!mAudioOutputDevices[i]) {
274			mAudioOutputDevices[i] = pDevice;
275			break;
276			}
277			}
278	schoenebeck	64
279	schoenebeck	53	return pDevice;
280			}
281
282	schoenebeck	123	uint Sampler::AudioOutputDevices() {
283			return mAudioOutputDevices.size();
284	schoenebeck	53	}
285
286	senkov	155	uint Sampler::MidiInputDevices() {
287			return mMidiInputDevices.size();
288			}
289
290	schoenebeck	123	std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
291			return mAudioOutputDevices;
292			}
293
294	senkov	155	std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
295			return mMidiInputDevices;
296			}
297
298	schoenebeck	123	void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
299			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
300			for (; iter != mAudioOutputDevices.end(); iter++) {
301			if (iter->second == pDevice) {
302			// check if there are still sampler engines connected to this device
303			for (uint i = 0; i < SamplerChannels(); i++)
304			if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
305
306			// disable device
307			pDevice->Stop();
308
309			// remove device from the device list
310			mAudioOutputDevices.erase(iter);
311
312			// destroy and free device from memory
313			delete pDevice;
314			}
315			}
316			}
317
318	senkov	155	void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
319			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
320			for (; iter != mMidiInputDevices.end(); iter++) {
321			if (iter->second == pDevice) {
322			// check if there are still sampler engines connected to this device
323			for (uint i = 0; i < SamplerChannels(); i++)
324			if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
325	schoenebeck	53
326	senkov	155	// disable device
327			pDevice->StopListen();
328
329			// remove device from the device list
330			mMidiInputDevices.erase(iter);
331
332			// destroy and free device from memory
333			delete pDevice;
334			}
335	schoenebeck	53	}
336	senkov	155	}
337	schoenebeck	53
338	senkov	155	MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
339			// create new device
340	schoenebeck	551	MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
341	senkov	155
342			// add new device to the midi device list
343			for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
344			if (!mMidiInputDevices[i]) {
345			mMidiInputDevices[i] = pDevice;
346			break;
347			}
348			}
349	schoenebeck	64
350	schoenebeck	53	return pDevice;
351			}
352
353	schoenebeck	212	void Sampler::Reset() {
354			// delete sampler channels
355			try {
356	senkov	329	while (true) {
357			SamplerChannelMap::iterator iter = mSamplerChannels.begin();
358			if (iter == mSamplerChannels.end()) break;
359			RemoveSamplerChannel(iter->second);
360	schoenebeck	212	}
361			}
362			catch(...) {
363			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
364			exit(EXIT_FAILURE);
365			}
366
367			// delete midi input devices
368			try {
369	senkov	329	while (true) {
370			MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
371			if (iter == mMidiInputDevices.end()) break;
372			DestroyMidiInputDevice(iter->second);
373	schoenebeck	212	}
374			}
375			catch(...) {
376			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
377			exit(EXIT_FAILURE);
378			}
379
380			// delete audio output devices
381			try {
382	senkov	329	while (true) {
383			AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
384			if (iter == mAudioOutputDevices.end()) break;
385			DestroyAudioOutputDevice(iter->second);
386	schoenebeck	212	}
387			}
388			catch(...) {
389			std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
390			exit(EXIT_FAILURE);
391			}
392			}
393
394	schoenebeck	53	} // namespace LinuxSampler