drivers/midi/MidiInputPort.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 "MidiInputPort.h"

#include "../../Sampler.h"
#include "../../engines/EngineFactory.h"

namespace LinuxSampler {

// *************** ParameterName ***************
// *

    MidiInputPort::ParameterName::ParameterName(MidiInputPort* pPort) : DeviceRuntimeParameterString("Port " + ToString(pPort->GetPortNumber())) {
        this->pPort = pPort;
    }

    MidiInputPort::ParameterName::ParameterName(MidiInputPort* pPort, String val) : DeviceRuntimeParameterString(val) {
        this->pPort = pPort;
    }

    String MidiInputPort::ParameterName::Description() {
        return "Name for this port";
    }

    bool MidiInputPort::ParameterName::Fix() {
        return false;
    }

    std::vector<String> MidiInputPort::ParameterName::PossibilitiesAsString() {
        return std::vector<String>();
    }

    void MidiInputPort::ParameterName::OnSetValue(String s) throw (Exception) {
        return; /* FIXME: Nothing to do here */
    }


// *************** MidiInputPort ***************
// *

    MidiInputPort::~MidiInputPort() {
        std::map<String,DeviceRuntimeParameter*>::iterator iter = Parameters.begin();
        while (iter != Parameters.end()) {
            delete iter->second;
            iter++;
        }
        Parameters.clear();
    }

    MidiInputPort::MidiInputPort(MidiInputDevice* pDevice, int portNumber)
        : MidiChannelMapReader(MidiChannelMap),
          SysexListenersReader(SysexListeners) {
        this->pDevice = pDevice;
        this->portNumber = portNumber;
        Parameters["NAME"] = new ParameterName(this);
        pPreviousProgramChangeEngineChannel = NULL;
    }

    MidiInputDevice* MidiInputPort::GetDevice() {
        return pDevice;
    }

    uint MidiInputPort::GetPortNumber() {
        return portNumber;
    }

    std::map<String,DeviceRuntimeParameter*> MidiInputPort::PortParameters() {
        return Parameters;
    }

    void MidiInputPort::DispatchNoteOn(uint8_t Key, uint8_t Velocity, uint MidiChannel) {
        const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
        // dispatch event for engines listening to the same MIDI channel
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[MidiChannel].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOn(Key, Velocity);
        }
        // dispatch event for engines listening to ALL MIDI channels
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[midi_chan_all].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOn(Key, Velocity);
        }
        MidiChannelMapReader.Unlock();
    }

    void MidiInputPort::DispatchNoteOff(uint8_t Key, uint8_t Velocity, uint MidiChannel) {
        const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
        // dispatch event for engines listening to the same MIDI channel
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[MidiChannel].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOff(Key, Velocity);
        }
        // dispatch event for engines listening to ALL MIDI channels
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[midi_chan_all].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOff(Key, Velocity);
        }
        MidiChannelMapReader.Unlock();
    }

    void MidiInputPort::DispatchPitchbend(int Pitch, uint MidiChannel) {
        const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
        // dispatch event for engines listening to the same MIDI channel
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[MidiChannel].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendPitchbend(Pitch);
        }
        // dispatch event for engines listening to ALL MIDI channels
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[midi_chan_all].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendPitchbend(Pitch);
        }
        MidiChannelMapReader.Unlock();
    }

    void MidiInputPort::DispatchControlChange(uint8_t Controller, uint8_t Value, uint MidiChannel) {
        const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
        // dispatch event for engines listening to the same MIDI channel
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[MidiChannel].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendControlChange(Controller, Value);
        }
        // dispatch event for engines listening to ALL MIDI channels
        {
            std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
            std::set<EngineChannel*>::iterator end        = midiChannelMap[midi_chan_all].end();
            for (; engineiter != end; engineiter++) (*engineiter)->SendControlChange(Controller, Value);
        }
        MidiChannelMapReader.Unlock();
    }

    void MidiInputPort::DispatchSysex(void* pData, uint Size) {
        const std::set<Engine*> allEngines = SysexListenersReader.Lock();
        // dispatch event to all engine instances
        std::set<Engine*>::iterator engineiter = allEngines.begin();
        std::set<Engine*>::iterator end        = allEngines.end();
        for (; engineiter != end; engineiter++) (*engineiter)->SendSysex(pData, Size);
        SysexListenersReader.Unlock();
    }

    void MidiInputPort::DispatchProgramChange(uint8_t Program, uint MidiChannel) {
        if (!pDevice || !pDevice->pSampler) {
            std::cerr << "MidiInputPort: ERROR, no sampler instance to handle program change."
                      << "This is a bug, please report it!\n" << std::flush;
            return;
        }

        Sampler*        pSampler        = (Sampler*) pDevice->pSampler;
        SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(Program);
        if (!pSamplerChannel) return;

        EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
        if (!pEngineChannel) return;

        // disconnect from the engine channel which was connected by the last PC event
        if (pPreviousProgramChangeEngineChannel)
            Disconnect(pPreviousProgramChangeEngineChannel);

        // now connect to the new engine channel and remember it
        try {
            Connect(pEngineChannel, (midi_chan_t) MidiChannel);
            pPreviousProgramChangeEngineChannel = pEngineChannel;
        }
        catch (...) { /* NOOP */ }
    }

    void MidiInputPort::Connect(EngineChannel* pEngineChannel, midi_chan_t MidiChannel) {
        if (MidiChannel < 0 || MidiChannel > 16)
            throw MidiInputException("MIDI channel index out of bounds");

        // first check if desired connection is already established
        MidiChannelMapMutex.Lock();
        MidiChannelMap_t& midiChannelMap = MidiChannelMap.GetConfigForUpdate();
        bool bAlreadyDone = midiChannelMap[MidiChannel].count(pEngineChannel);
        MidiChannelMapMutex.Unlock();
        if (bAlreadyDone) return;

        // remove all other connections of that engine channel (if any)
        Disconnect(pEngineChannel);

        // register engine channel on the desired MIDI channel
        MidiChannelMapMutex.Lock();
        MidiChannelMap.GetConfigForUpdate()[MidiChannel].insert(pEngineChannel);
        MidiChannelMap.SwitchConfig()[MidiChannel].insert(pEngineChannel);
        MidiChannelMapMutex.Unlock();

        // inform engine channel about this connection
        pEngineChannel->Connect(this, MidiChannel);

        // mark engine channel as changed
        pEngineChannel->StatusChanged(true);
    }

    void MidiInputPort::Disconnect(EngineChannel* pEngineChannel) {
        if (!pEngineChannel) return;

        bool bChannelFound = false;

        // unregister engine channel from all MIDI channels
        MidiChannelMapMutex.Lock();
        try {
            {
                MidiChannelMap_t& midiChannelMap = MidiChannelMap.GetConfigForUpdate();
                for (int i = 0; i <= 16; i++) {
                    bChannelFound |= midiChannelMap[i].count(pEngineChannel);
                    midiChannelMap[i].erase(pEngineChannel);
                }
            }
            // do the same update again, after switching to the other config
            {
                MidiChannelMap_t& midiChannelMap = MidiChannelMap.SwitchConfig();
                for (int i = 0; i <= 16; i++) {
                    bChannelFound |= midiChannelMap[i].count(pEngineChannel);
                    midiChannelMap[i].erase(pEngineChannel);
                }
            }
        }
        catch(...) { /* NOOP */ }
        MidiChannelMapMutex.Unlock();

        // inform engine channel about the disconnection (if there is one)
        if (bChannelFound) pEngineChannel->DisconnectMidiInputPort();

        // mark engine channel as changed
        pEngineChannel->StatusChanged(true);
    }

    SynchronizedConfig<std::set<LinuxSampler::Engine*> > MidiInputPort::SysexListeners;

    void MidiInputPort::AddSysexListener(Engine* engine) {
        std::pair<std::set<Engine*>::iterator, bool> p = SysexListeners.GetConfigForUpdate().insert(engine);
        if (p.second) SysexListeners.SwitchConfig().insert(engine);
    }

    bool MidiInputPort::RemoveSysexListener(Engine* engine) {
        int count = SysexListeners.GetConfigForUpdate().erase(engine);
        if (count) SysexListeners.SwitchConfig().erase(engine);
        return count;
    }

} // namespace LinuxSampler
1	schoenebeck	221	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	880	* Copyright (C) 2005, 2006 Christian Schoenebeck *
7	schoenebeck	221	* *
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			#include "MidiInputPort.h"
25
26	schoenebeck	551	#include "../../Sampler.h"
27	schoenebeck	775	#include "../../engines/EngineFactory.h"
28	schoenebeck	551
29	schoenebeck	221	namespace LinuxSampler {
30
31			// ************* ParameterName *************
32			// *
33
34			MidiInputPort::ParameterName::ParameterName(MidiInputPort* pPort) : DeviceRuntimeParameterString("Port " + ToString(pPort->GetPortNumber())) {
35			this->pPort = pPort;
36			}
37
38			MidiInputPort::ParameterName::ParameterName(MidiInputPort* pPort, String val) : DeviceRuntimeParameterString(val) {
39			this->pPort = pPort;
40			}
41
42			String MidiInputPort::ParameterName::Description() {
43			return "Name for this port";
44			}
45
46			bool MidiInputPort::ParameterName::Fix() {
47			return false;
48			}
49
50			std::vector<String> MidiInputPort::ParameterName::PossibilitiesAsString() {
51			return std::vector<String>();
52			}
53
54	schoenebeck	880	void MidiInputPort::ParameterName::OnSetValue(String s) throw (Exception) {
55	schoenebeck	221	return; /* FIXME: Nothing to do here */
56			}
57
58
59
60			// ************* MidiInputPort *************
61			// *
62
63			MidiInputPort::~MidiInputPort() {
64			std::map<String,DeviceRuntimeParameter*>::iterator iter = Parameters.begin();
65			while (iter != Parameters.end()) {
66			delete iter->second;
67			iter++;
68			}
69	persson	836	Parameters.clear();
70	schoenebeck	221	}
71
72	persson	846	MidiInputPort::MidiInputPort(MidiInputDevice* pDevice, int portNumber)
73			: MidiChannelMapReader(MidiChannelMap),
74			SysexListenersReader(SysexListeners) {
75	schoenebeck	221	this->pDevice = pDevice;
76			this->portNumber = portNumber;
77			Parameters["NAME"] = new ParameterName(this);
78	schoenebeck	551	pPreviousProgramChangeEngineChannel = NULL;
79	schoenebeck	221	}
80
81			MidiInputDevice* MidiInputPort::GetDevice() {
82			return pDevice;
83			}
84
85			uint MidiInputPort::GetPortNumber() {
86			return portNumber;
87			}
88
89			std::map<String,DeviceRuntimeParameter*> MidiInputPort::PortParameters() {
90			return Parameters;
91			}
92
93			void MidiInputPort::DispatchNoteOn(uint8_t Key, uint8_t Velocity, uint MidiChannel) {
94	persson	846	const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
95	schoenebeck	274	// dispatch event for engines listening to the same MIDI channel
96			{
97	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
98			std::set<EngineChannel*>::iterator end = midiChannelMap[MidiChannel].end();
99	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOn(Key, Velocity);
100			}
101			// dispatch event for engines listening to ALL MIDI channels
102			{
103	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
104			std::set<EngineChannel*>::iterator end = midiChannelMap[midi_chan_all].end();
105	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOn(Key, Velocity);
106			}
107	persson	846	MidiChannelMapReader.Unlock();
108	schoenebeck	221	}
109
110			void MidiInputPort::DispatchNoteOff(uint8_t Key, uint8_t Velocity, uint MidiChannel) {
111	persson	846	const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
112	schoenebeck	274	// dispatch event for engines listening to the same MIDI channel
113			{
114	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
115			std::set<EngineChannel*>::iterator end = midiChannelMap[MidiChannel].end();
116	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOff(Key, Velocity);
117			}
118			// dispatch event for engines listening to ALL MIDI channels
119			{
120	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
121			std::set<EngineChannel*>::iterator end = midiChannelMap[midi_chan_all].end();
122	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendNoteOff(Key, Velocity);
123			}
124	persson	846	MidiChannelMapReader.Unlock();
125	schoenebeck	221	}
126
127			void MidiInputPort::DispatchPitchbend(int Pitch, uint MidiChannel) {
128	persson	846	const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
129	schoenebeck	274	// dispatch event for engines listening to the same MIDI channel
130			{
131	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
132			std::set<EngineChannel*>::iterator end = midiChannelMap[MidiChannel].end();
133	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendPitchbend(Pitch);
134			}
135			// dispatch event for engines listening to ALL MIDI channels
136			{
137	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
138			std::set<EngineChannel*>::iterator end = midiChannelMap[midi_chan_all].end();
139	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendPitchbend(Pitch);
140			}
141	persson	846	MidiChannelMapReader.Unlock();
142	schoenebeck	221	}
143
144			void MidiInputPort::DispatchControlChange(uint8_t Controller, uint8_t Value, uint MidiChannel) {
145	persson	846	const MidiChannelMap_t& midiChannelMap = MidiChannelMapReader.Lock();
146	schoenebeck	274	// dispatch event for engines listening to the same MIDI channel
147			{
148	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[MidiChannel].begin();
149			std::set<EngineChannel*>::iterator end = midiChannelMap[MidiChannel].end();
150	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendControlChange(Controller, Value);
151			}
152			// dispatch event for engines listening to ALL MIDI channels
153			{
154	persson	840	std::set<EngineChannel*>::iterator engineiter = midiChannelMap[midi_chan_all].begin();
155			std::set<EngineChannel*>::iterator end = midiChannelMap[midi_chan_all].end();
156	schoenebeck	274	for (; engineiter != end; engineiter++) (*engineiter)->SendControlChange(Controller, Value);
157			}
158	persson	846	MidiChannelMapReader.Unlock();
159	schoenebeck	221	}
160
161	schoenebeck	244	void MidiInputPort::DispatchSysex(void* pData, uint Size) {
162	persson	846	const std::set<Engine*> allEngines = SysexListenersReader.Lock();
163	schoenebeck	775	// dispatch event to all engine instances
164	persson	846	std::set<Engine*>::iterator engineiter = allEngines.begin();
165			std::set<Engine*>::iterator end = allEngines.end();
166	schoenebeck	775	for (; engineiter != end; engineiter++) (*engineiter)->SendSysex(pData, Size);
167	persson	846	SysexListenersReader.Unlock();
168	schoenebeck	244	}
169
170	schoenebeck	670	void MidiInputPort::DispatchProgramChange(uint8_t Program, uint MidiChannel) {
171	schoenebeck	551	if (!pDevice \|\| !pDevice->pSampler) {
172			std::cerr << "MidiInputPort: ERROR, no sampler instance to handle program change."
173			<< "This is a bug, please report it!\n" << std::flush;
174			return;
175			}
176
177			Sampler* pSampler = (Sampler*) pDevice->pSampler;
178			SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(Program);
179			if (!pSamplerChannel) return;
180
181			EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
182			if (!pEngineChannel) return;
183
184			// disconnect from the engine channel which was connected by the last PC event
185			if (pPreviousProgramChangeEngineChannel)
186			Disconnect(pPreviousProgramChangeEngineChannel);
187	schoenebeck	670
188	schoenebeck	551	// now connect to the new engine channel and remember it
189			try {
190			Connect(pEngineChannel, (midi_chan_t) MidiChannel);
191			pPreviousProgramChangeEngineChannel = pEngineChannel;
192			}
193			catch (...) { /* NOOP */ }
194			}
195
196	schoenebeck	411	void MidiInputPort::Connect(EngineChannel* pEngineChannel, midi_chan_t MidiChannel) {
197	schoenebeck	221	if (MidiChannel < 0 \|\| MidiChannel > 16)
198			throw MidiInputException("MIDI channel index out of bounds");
199	schoenebeck	670
200	persson	840	// first check if desired connection is already established
201	schoenebeck	675	MidiChannelMapMutex.Lock();
202	persson	840	MidiChannelMap_t& midiChannelMap = MidiChannelMap.GetConfigForUpdate();
203			bool bAlreadyDone = midiChannelMap[MidiChannel].count(pEngineChannel);
204	schoenebeck	675	MidiChannelMapMutex.Unlock();
205			if (bAlreadyDone) return;
206
207			// remove all other connections of that engine channel (if any)
208	schoenebeck	411	Disconnect(pEngineChannel);
209	schoenebeck	670
210	schoenebeck	675	// register engine channel on the desired MIDI channel
211	schoenebeck	551	MidiChannelMapMutex.Lock();
212	persson	840	MidiChannelMap.GetConfigForUpdate()[MidiChannel].insert(pEngineChannel);
213			MidiChannelMap.SwitchConfig()[MidiChannel].insert(pEngineChannel);
214	schoenebeck	551	MidiChannelMapMutex.Unlock();
215	schoenebeck	670
216	schoenebeck	675	// inform engine channel about this connection
217			pEngineChannel->Connect(this, MidiChannel);
218
219	schoenebeck	670	// mark engine channel as changed
220			pEngineChannel->StatusChanged(true);
221	schoenebeck	221	}
222
223	schoenebeck	411	void MidiInputPort::Disconnect(EngineChannel* pEngineChannel) {
224	schoenebeck	675	if (!pEngineChannel) return;
225
226			bool bChannelFound = false;
227
228			// unregister engine channel from all MIDI channels
229	schoenebeck	551	MidiChannelMapMutex.Lock();
230	schoenebeck	675	try {
231	persson	840	{
232			MidiChannelMap_t& midiChannelMap = MidiChannelMap.GetConfigForUpdate();
233			for (int i = 0; i <= 16; i++) {
234			bChannelFound \|= midiChannelMap[i].count(pEngineChannel);
235			midiChannelMap[i].erase(pEngineChannel);
236			}
237	schoenebeck	675	}
238	persson	840	// do the same update again, after switching to the other config
239			{
240			MidiChannelMap_t& midiChannelMap = MidiChannelMap.SwitchConfig();
241			for (int i = 0; i <= 16; i++) {
242			bChannelFound \|= midiChannelMap[i].count(pEngineChannel);
243			midiChannelMap[i].erase(pEngineChannel);
244			}
245			}
246	schoenebeck	675	}
247	schoenebeck	221	catch(...) { /* NOOP */ }
248	schoenebeck	551	MidiChannelMapMutex.Unlock();
249	schoenebeck	675
250			// inform engine channel about the disconnection (if there is one)
251			if (bChannelFound) pEngineChannel->DisconnectMidiInputPort();
252
253	schoenebeck	670	// mark engine channel as changed
254			pEngineChannel->StatusChanged(true);
255	schoenebeck	221	}
256
257	persson	846	SynchronizedConfig<std::set<LinuxSampler::Engine*> > MidiInputPort::SysexListeners;
258
259			void MidiInputPort::AddSysexListener(Engine* engine) {
260			std::pair<std::set<Engine*>::iterator, bool> p = SysexListeners.GetConfigForUpdate().insert(engine);
261			if (p.second) SysexListeners.SwitchConfig().insert(engine);
262			}
263
264			bool MidiInputPort::RemoveSysexListener(Engine* engine) {
265			int count = SysexListeners.GetConfigForUpdate().erase(engine);
266			if (count) SysexListeners.SwitchConfig().erase(engine);
267			return count;
268			}
269
270	schoenebeck	221	} // namespace LinuxSampler