src/plugin/linuxsamplerplugin.cpp

/*
 * Copyright (C) 2007 - 2015 Andreas Persson
 *
 * 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, 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 program; see the file COPYING. If not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#include "linuxsamplerplugin.h"

#include <linuxsampler/plugins/InstrumentEditorFactory.h>
#include <linuxsampler/engines/Engine.h>
#include <linuxsampler/engines/EngineChannel.h>
#include "../gigedit/gigedit.h"
#include "../gigedit/global.h"

#include <iostream>
#include <sigc++/bind.h>
#include <glibmm/main.h>

REGISTER_INSTRUMENT_EDITOR(LinuxSamplerPlugin)

LinuxSamplerPlugin::LinuxSamplerPlugin() {
    pApp = new GigEdit;
}

LinuxSamplerPlugin::~LinuxSamplerPlugin() {
    if (pApp) delete static_cast<GigEdit*>(pApp);
}

int LinuxSamplerPlugin::Main(void* pInstrument, String sTypeName, String sTypeVersion, void* /*pUserData*/) {
    return Main(pInstrument, sTypeName, sTypeVersion);
}

int LinuxSamplerPlugin::Main(void* pInstrument, String sTypeName, String sTypeVersion) {
    std::cout << "Entered Gigedit Main() loop :)\n" << std::flush;
    gig::Instrument* pGigInstr = static_cast<gig::Instrument*>(pInstrument);
    GigEdit* app = static_cast<GigEdit*>(pApp);

    // connect notification signals
    app->signal_file_structure_to_be_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
            ),
            "gig::File"
        )
    );
    app->signal_file_structure_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureChanged
            ),
            "gig::File"
        )
    );
    app->signal_samples_to_be_removed().connect(
        sigc::mem_fun(*this, &LinuxSamplerPlugin::__onSamplesToBeRemoved)
    );
    app->signal_samples_removed().connect(
        sigc::mem_fun(*this, &LinuxSamplerPlugin::NotifySamplesRemoved)
    );
    app->signal_region_to_be_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
            ),
            "gig::Region"
        )
    );
    app->signal_region_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureChanged
            ),
            "gig::Region"
        )
    );
    app->signal_dimreg_to_be_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
            ),
            "gig::DimensionRegion"
        )
    );
    app->signal_dimreg_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureChanged
            ),
            "gig::DimensionRegion"
        )
    );
    app->signal_sample_changed().connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureChanged
            ),
            "gig::Sample"
        )
    );
    app->signal_sample_ref_changed().connect(
        sigc::mem_fun(*this, &LinuxSamplerPlugin::NotifySampleReferenceChanged)
    );

    app->signal_keyboard_key_hit().connect(
        sigc::mem_fun(*this, &LinuxSamplerPlugin::__onVirtualKeyboardKeyHit)
    );
    app->signal_keyboard_key_released().connect(
        sigc::mem_fun(*this, &LinuxSamplerPlugin::__onVirtualKeyboardKeyReleased)
    );
    app->signal_switch_sampler_instrument().connect(
        sigc::mem_fun(*this, &LinuxSamplerPlugin::__requestSamplerToSwitchInstrument)
    );
    app->signal_script_to_be_changed.connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
            ),
            "gig::Script"
        )
    );
    app->signal_script_changed.connect(
        sigc::bind(
            sigc::mem_fun(
                *this, &LinuxSamplerPlugin::NotifyDataStructureChanged
            ),
            "gig::Script"
        )
    );

    // register a timeout job to gigedit's main loop, so we can poll the
    // the sampler periodically for MIDI events (I HOPE it works on all
    // archs, because gigedit is actually running in another thread than
    // the one that is calling this timeout handler register code)
    const Glib::RefPtr<Glib::TimeoutSource> timeout_source =
        Glib::TimeoutSource::create(100); // poll every 100ms
    timeout_source->connect(
        sigc::mem_fun(this, &LinuxSamplerPlugin::__onPollPeriod)
    );
    timeout_source->attach(Glib::MainContext::get_default());

    // run gigedit application
    return app->run(pGigInstr);
}

bool LinuxSamplerPlugin::__onPollPeriod() {
    #if HAVE_LINUXSAMPLER_VIRTUAL_MIDI_DEVICE
    GigEdit* app = static_cast<GigEdit*>(pApp);
    if (!NotesChanged()) return true;
    for (int iKey = 0; iKey < 128; iKey++)
        if (NoteChanged(iKey))
            NoteIsActive(iKey) ?
                app->on_note_on_event(iKey, NoteOnVelocity(iKey)) :
                app->on_note_off_event(iKey, NoteOffVelocity(iKey));
    return true;
    #else
    return false;
    #endif
}

void LinuxSamplerPlugin::__onSamplesToBeRemoved(std::list<gig::Sample*> lSamples) {
    // we have to convert the gig::Sample* list to a void* list first
    std::set<void*> samples;
    for (
        std::list<gig::Sample*>::iterator iter = lSamples.begin();
        iter != lSamples.end(); ++iter
    ) samples.insert((void*)*iter);
    // finally send notification to sampler
    NotifySamplesToBeRemoved(samples);
}

void LinuxSamplerPlugin::__onVirtualKeyboardKeyHit(int Key, int Velocity) {
    #if HAVE_LINUXSAMPLER_VIRTUAL_MIDI_DEVICE
    SendNoteOnToSampler(Key, Velocity);
    #endif
}

void LinuxSamplerPlugin::__onVirtualKeyboardKeyReleased(int Key, int Velocity) {
    #if HAVE_LINUXSAMPLER_VIRTUAL_MIDI_DEVICE
    SendNoteOffToSampler(Key, Velocity);
    #endif
}

void LinuxSamplerPlugin::__requestSamplerToSwitchInstrument(gig::Instrument* pInstrument) {
    if (!pInstrument) return;

    LinuxSampler::EngineChannel* pEngineChannel = GetEngineChannel();
    if (!pEngineChannel) return;

    LinuxSampler::Engine* pEngine = pEngineChannel->GetEngine();
    if (!pEngine) return;

    LinuxSampler::InstrumentManager* pInstrumentManager = pEngine->GetInstrumentManager();
    if (!pInstrumentManager) return;

    gig::File* pFile = (gig::File*) pInstrument->GetParent();

    // resolve instrument's index number in its gig file
    int index = -1;
    for (int i = 0; pFile->GetInstrument(i); ++i) {
        if (pFile->GetInstrument(i) == pInstrument) {
            index = i;
            break;
        }
    }
    if (index < 0) return;

    LinuxSampler::InstrumentManager::instrument_id_t id;
    id.FileName = pFile->GetFileName();
    id.Index    = index;
    pInstrumentManager->LoadInstrumentInBackground(id, pEngineChannel);
}

bool LinuxSamplerPlugin::IsTypeSupported(String sTypeName, String sTypeVersion) {
    return sTypeName == gig::libraryName() &&
           sTypeVersion == gig::libraryVersion();
}

String LinuxSamplerPlugin::Name() {
    return "gigedit";
}

String LinuxSamplerPlugin::Version() {
    return VERSION; // gigedit's version
}

String LinuxSamplerPlugin::Description() {
    return "Gigedit is an instrument editor for gig files.";
}
1	/*
2	* Copyright (C) 2007 - 2015 Andreas Persson
3	*
4	* This program is free software; you can redistribute it and/or
5	* modify it under the terms of the GNU General Public License as
6	* published by the Free Software Foundation; either version 2, or (at
7	* your option) any later version.
8	*
9	* This program is distributed in the hope that it will be useful, but
10	* WITHOUT ANY WARRANTY; without even the implied warranty of
11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12	* General Public License for more details.
13	*
14	* You should have received a copy of the GNU General Public License
15	* along with program; see the file COPYING. If not, write to the Free
16	* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
17	* 02110-1301 USA.
18	*/
19
20	#include "linuxsamplerplugin.h"
21
22	#include <linuxsampler/plugins/InstrumentEditorFactory.h>
23	#include <linuxsampler/engines/Engine.h>
24	#include <linuxsampler/engines/EngineChannel.h>
25	#include "../gigedit/gigedit.h"
26	#include "../gigedit/global.h"
27
28	#include <iostream>
29	#include <sigc++/bind.h>
30	#include <glibmm/main.h>
31
32	REGISTER_INSTRUMENT_EDITOR(LinuxSamplerPlugin)
33
34	LinuxSamplerPlugin::LinuxSamplerPlugin() {
35	pApp = new GigEdit;
36	}
37
38	LinuxSamplerPlugin::~LinuxSamplerPlugin() {
39	if (pApp) delete static_cast<GigEdit*>(pApp);
40	}
41
42	int LinuxSamplerPlugin::Main(void* pInstrument, String sTypeName, String sTypeVersion, void* /pUserData/) {
43	return Main(pInstrument, sTypeName, sTypeVersion);
44	}
45
46	int LinuxSamplerPlugin::Main(void* pInstrument, String sTypeName, String sTypeVersion) {
47	std::cout << "Entered Gigedit Main() loop :)\n" << std::flush;
48	gig::Instrument* pGigInstr = static_cast<gig::Instrument*>(pInstrument);
49	GigEdit* app = static_cast<GigEdit*>(pApp);
50
51	// connect notification signals
52	app->signal_file_structure_to_be_changed().connect(
53	sigc::bind(
54	sigc::mem_fun(
55	*this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
56	),
57	"gig::File"
58	)
59	);
60	app->signal_file_structure_changed().connect(
61	sigc::bind(
62	sigc::mem_fun(
63	*this, &LinuxSamplerPlugin::NotifyDataStructureChanged
64	),
65	"gig::File"
66	)
67	);
68	app->signal_samples_to_be_removed().connect(
69	sigc::mem_fun(*this, &LinuxSamplerPlugin::__onSamplesToBeRemoved)
70	);
71	app->signal_samples_removed().connect(
72	sigc::mem_fun(*this, &LinuxSamplerPlugin::NotifySamplesRemoved)
73	);
74	app->signal_region_to_be_changed().connect(
75	sigc::bind(
76	sigc::mem_fun(
77	*this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
78	),
79	"gig::Region"
80	)
81	);
82	app->signal_region_changed().connect(
83	sigc::bind(
84	sigc::mem_fun(
85	*this, &LinuxSamplerPlugin::NotifyDataStructureChanged
86	),
87	"gig::Region"
88	)
89	);
90	app->signal_dimreg_to_be_changed().connect(
91	sigc::bind(
92	sigc::mem_fun(
93	*this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
94	),
95	"gig::DimensionRegion"
96	)
97	);
98	app->signal_dimreg_changed().connect(
99	sigc::bind(
100	sigc::mem_fun(
101	*this, &LinuxSamplerPlugin::NotifyDataStructureChanged
102	),
103	"gig::DimensionRegion"
104	)
105	);
106	app->signal_sample_changed().connect(
107	sigc::bind(
108	sigc::mem_fun(
109	*this, &LinuxSamplerPlugin::NotifyDataStructureChanged
110	),
111	"gig::Sample"
112	)
113	);
114	app->signal_sample_ref_changed().connect(
115	sigc::mem_fun(*this, &LinuxSamplerPlugin::NotifySampleReferenceChanged)
116	);
117
118	app->signal_keyboard_key_hit().connect(
119	sigc::mem_fun(*this, &LinuxSamplerPlugin::__onVirtualKeyboardKeyHit)
120	);
121	app->signal_keyboard_key_released().connect(
122	sigc::mem_fun(*this, &LinuxSamplerPlugin::__onVirtualKeyboardKeyReleased)
123	);
124	app->signal_switch_sampler_instrument().connect(
125	sigc::mem_fun(*this, &LinuxSamplerPlugin::__requestSamplerToSwitchInstrument)
126	);
127	app->signal_script_to_be_changed.connect(
128	sigc::bind(
129	sigc::mem_fun(
130	*this, &LinuxSamplerPlugin::NotifyDataStructureToBeChanged
131	),
132	"gig::Script"
133	)
134	);
135	app->signal_script_changed.connect(
136	sigc::bind(
137	sigc::mem_fun(
138	*this, &LinuxSamplerPlugin::NotifyDataStructureChanged
139	),
140	"gig::Script"
141	)
142	);
143
144	// register a timeout job to gigedit's main loop, so we can poll the
145	// the sampler periodically for MIDI events (I HOPE it works on all
146	// archs, because gigedit is actually running in another thread than
147	// the one that is calling this timeout handler register code)
148	const Glib::RefPtr<Glib::TimeoutSource> timeout_source =
149	Glib::TimeoutSource::create(100); // poll every 100ms
150	timeout_source->connect(
151	sigc::mem_fun(this, &LinuxSamplerPlugin::__onPollPeriod)
152	);
153	timeout_source->attach(Glib::MainContext::get_default());
154
155	// run gigedit application
156	return app->run(pGigInstr);
157	}
158
159	bool LinuxSamplerPlugin::__onPollPeriod() {
160	#if HAVE_LINUXSAMPLER_VIRTUAL_MIDI_DEVICE
161	GigEdit* app = static_cast<GigEdit*>(pApp);
162	if (!NotesChanged()) return true;
163	for (int iKey = 0; iKey < 128; iKey++)
164	if (NoteChanged(iKey))
165	NoteIsActive(iKey) ?
166	app->on_note_on_event(iKey, NoteOnVelocity(iKey)) :
167	app->on_note_off_event(iKey, NoteOffVelocity(iKey));
168	return true;
169	#else
170	return false;
171	#endif
172	}
173
174	void LinuxSamplerPlugin::__onSamplesToBeRemoved(std::list<gig::Sample*> lSamples) {
175	// we have to convert the gig::Sample* list to a void* list first
176	std::set<void*> samples;
177	for (
178	std::list<gig::Sample*>::iterator iter = lSamples.begin();
179	iter != lSamples.end(); ++iter
180	) samples.insert((void)iter);
181	// finally send notification to sampler
182	NotifySamplesToBeRemoved(samples);
183	}
184
185	void LinuxSamplerPlugin::__onVirtualKeyboardKeyHit(int Key, int Velocity) {
186	#if HAVE_LINUXSAMPLER_VIRTUAL_MIDI_DEVICE
187	SendNoteOnToSampler(Key, Velocity);
188	#endif
189	}
190
191	void LinuxSamplerPlugin::__onVirtualKeyboardKeyReleased(int Key, int Velocity) {
192	#if HAVE_LINUXSAMPLER_VIRTUAL_MIDI_DEVICE
193	SendNoteOffToSampler(Key, Velocity);
194	#endif
195	}
196
197	void LinuxSamplerPlugin::__requestSamplerToSwitchInstrument(gig::Instrument* pInstrument) {
198	if (!pInstrument) return;
199
200	LinuxSampler::EngineChannel* pEngineChannel = GetEngineChannel();
201	if (!pEngineChannel) return;
202
203	LinuxSampler::Engine* pEngine = pEngineChannel->GetEngine();
204	if (!pEngine) return;
205
206	LinuxSampler::InstrumentManager* pInstrumentManager = pEngine->GetInstrumentManager();
207	if (!pInstrumentManager) return;
208
209	gig::File* pFile = (gig::File*) pInstrument->GetParent();
210
211	// resolve instrument's index number in its gig file
212	int index = -1;
213	for (int i = 0; pFile->GetInstrument(i); ++i) {
214	if (pFile->GetInstrument(i) == pInstrument) {
215	index = i;
216	break;
217	}
218	}
219	if (index < 0) return;
220
221	LinuxSampler::InstrumentManager::instrument_id_t id;
222	id.FileName = pFile->GetFileName();
223	id.Index = index;
224	pInstrumentManager->LoadInstrumentInBackground(id, pEngineChannel);
225	}
226
227	bool LinuxSamplerPlugin::IsTypeSupported(String sTypeName, String sTypeVersion) {
228	return sTypeName == gig::libraryName() &&
229	sTypeVersion == gig::libraryVersion();
230	}
231
232	String LinuxSamplerPlugin::Name() {
233	return "gigedit";
234	}
235
236	String LinuxSamplerPlugin::Version() {
237	return VERSION; // gigedit's version
238	}
239
240	String LinuxSamplerPlugin::Description() {
241	return "Gigedit is an instrument editor for gig files.";
242	}