src/drivers/Plugin.cpp

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2008 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 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., 51 Franklin St, Fifth Floor, Boston,                *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#include <sstream>

#include "Plugin.h"
#include "audio/AudioOutputDeviceFactory.h"
#include "midi/MidiInputDeviceFactory.h"

namespace LinuxSampler {

// *************** PluginGlobal ***************
// *

    PluginGlobal::PluginGlobal() :
        RefCount(0) {
        // we need to remove the ASIO driver, otherwise the lscp info
        // methods will lock up the audio device
        AudioOutputDeviceFactory::InnerFactories.erase("ASIO");
        AudioOutputDeviceFactory::ParameterFactories.erase("ASIO");

        REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDevicePlugin);
        REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterActive);
        REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterSampleRate);
        REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterChannels);
        REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterFragmentSize);

        REGISTER_MIDI_INPUT_DRIVER(MidiInputDevicePlugin);
        REGISTER_MIDI_INPUT_DRIVER_PARAMETER(MidiInputDevicePlugin, ParameterActive);
        REGISTER_MIDI_INPUT_DRIVER_PARAMETER(MidiInputDevicePlugin, ParameterPorts);

        pSampler = new Sampler;

        // using LOOPBACK instead of ANY to prevent windows firewall
        // warnings
        pLSCPServer = new LSCPServer(pSampler, htonl(INADDR_LOOPBACK),
                                     htons(LSCP_PORT));
        pLSCPServer->StartThread();
        pLSCPServer->WaitUntilInitialized();

        pEventThread = new EventThread(pSampler);
        pEventThread->StartThread();
    }


    PluginGlobal::~PluginGlobal() {
        pEventThread->StopThread();
        pLSCPServer->StopThread();
        pLSCPServer->RemoveListeners();

        delete pEventThread;
        delete pSampler;
        delete pLSCPServer;
    }


// *************** EventThread ***************
// *


    EventThread::EventThread(Sampler* pSampler) :
        Thread(false, false, 0, 0),
        pSampler(pSampler) {
    }

    int EventThread::Main() {
        for (;;) {
            sleep(1);
            pSampler->fireStatistics();
        }
    }


// *************** Plugin ***************
// *

    PluginGlobal* Plugin::global = 0;

    Plugin::Plugin(bool bDoPreInit) :
        pAudioDevice(0),
        pMidiDevice(0) {
        bPreInitDone = false;
        if (bDoPreInit) PreInit();
    }

    void Plugin::PreInit() {
        if (bPreInitDone) return;

        bPreInitDone = true;
        if (!global) {
            global = new PluginGlobal;
        }
        global->RefCount++;
    }

    void Plugin::Init(int SampleRate, int FragmentSize, int Channels) {
        std::map<String, String> params;
        params["SAMPLERATE"] = ToString(SampleRate);
        params["FRAGMENTSIZE"] = ToString(FragmentSize);
        if (Channels > 0) params["CHANNELS"] = ToString(Channels);
        pAudioDevice = dynamic_cast<AudioOutputDevicePlugin*>(
            global->pSampler->CreateAudioOutputDevice(AudioOutputDevicePlugin::Name(), params));

        pMidiDevice = dynamic_cast<MidiInputDevicePlugin*>(
            global->pSampler->CreateMidiInputDevice(MidiInputDevicePlugin::Name(),
                                                    std::map<String,String>()));
    }

    Plugin::~Plugin() {
        RemoveChannels();
        if (pAudioDevice) global->pSampler->DestroyAudioOutputDevice(pAudioDevice);
        if (pMidiDevice) global->pSampler->DestroyMidiInputDevice(pMidiDevice);
        if (bPreInitDone) {
            if (--global->RefCount == 0) {
                delete global;
                global = 0;
            }
        }
    }

    void Plugin::InitState() {
        SamplerChannel* channel = global->pSampler->AddSamplerChannel();
        channel->SetEngineType("gig");
        channel->SetAudioOutputDevice(pAudioDevice);
        channel->SetMidiInputDevice(pMidiDevice);
        channel->SetMidiInputChannel(midi_chan_1);
    }


    String Plugin::GetState() {
        std::stringstream s;

        s << GLOBAL_VOLUME << '\n';
        std::map<uint, SamplerChannel*> channels = global->pSampler->GetSamplerChannels();
        for (std::map<uint, SamplerChannel*>::iterator iter = channels.begin() ;
             iter != channels.end() ; iter++) {
            SamplerChannel* channel = iter->second;
            if (channel->GetAudioOutputDevice() == pAudioDevice) {
                EngineChannel* engine_channel = channel->GetEngineChannel();
                String filename = engine_channel->InstrumentFileName();
                s << channel->GetMidiInputChannel() << ' ' <<
                    engine_channel->Volume() << ' ' <<
                    filename << '\n' <<
                    engine_channel->InstrumentIndex() << ' ' <<
                    engine_channel->GetSolo() << ' ' <<
                    (engine_channel->GetMute() == 1) << '\n';
            }
        }
        return s.str();
    }

    void Plugin::RemoveChannels() {
        if(global == NULL) return;

        std::map<uint, SamplerChannel*> channels = global->pSampler->GetSamplerChannels();

        for (std::map<uint, SamplerChannel*>::iterator iter = channels.begin() ;
             iter != channels.end() ; iter++) {
            if (iter->second->GetAudioOutputDevice() == pAudioDevice) {
                global->pSampler->RemoveSamplerChannel(iter->second);
            }
        }
    }

    bool Plugin::SetState(String State) {
        RemoveChannels();

        std::stringstream s(State);
        s >> GLOBAL_VOLUME;

        int midiChannel;
        float volume;
        while (s >> midiChannel >> volume) {
            s.ignore();
            String filename;
            std::getline(s, filename);
            int index;
            bool solo;
            bool mute;
            s >> index >> solo >> mute;

            SamplerChannel* channel = global->pSampler->AddSamplerChannel();
            channel->SetEngineType("gig");
            channel->SetAudioOutputDevice(pAudioDevice);
            channel->SetMidiInputDevice(pMidiDevice);
            channel->SetMidiInputChannel(midi_chan_t(midiChannel));

            EngineChannel* engine_channel = channel->GetEngineChannel();
            engine_channel->Volume(volume);
            if (!filename.empty() && index != -1) {
                InstrumentManager::instrument_id_t id;
                id.FileName = filename;
                id.Index    = index;
                InstrumentManager::LoadInstrumentInBackground(id, engine_channel);
            }
            if (solo) engine_channel->SetSolo(solo);
            if (mute) engine_channel->SetMute(1);
        }

        return true;
    }
}
1	/***************************************************************************
2	* *
3	* Copyright (C) 2008 Andreas Persson *
4	* *
5	* This program is free software; you can redistribute it and/or modify *
6	* it under the terms of the GNU General Public License as published by *
7	* the Free Software Foundation; either version 2 of the License, or *
8	* (at your option) any later version. *
9	* *
10	* This program is distributed in the hope that it will be useful, *
11	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13	* GNU General Public License for more details. *
14	* *
15	* You should have received a copy of the GNU General Public License *
16	* along with this program; if not, write to the Free Software *
17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
18	* MA 02110-1301 USA *
19	***************************************************************************/
20
21	#include <sstream>
22
23	#include "Plugin.h"
24	#include "audio/AudioOutputDeviceFactory.h"
25	#include "midi/MidiInputDeviceFactory.h"
26
27	namespace LinuxSampler {
28
29	// ************* PluginGlobal *************
30	// *
31
32	PluginGlobal::PluginGlobal() :
33	RefCount(0) {
34	// we need to remove the ASIO driver, otherwise the lscp info
35	// methods will lock up the audio device
36	AudioOutputDeviceFactory::InnerFactories.erase("ASIO");
37	AudioOutputDeviceFactory::ParameterFactories.erase("ASIO");
38
39	REGISTER_AUDIO_OUTPUT_DRIVER(AudioOutputDevicePlugin);
40	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterActive);
41	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterSampleRate);
42	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterChannels);
43	REGISTER_AUDIO_OUTPUT_DRIVER_PARAMETER(AudioOutputDevicePlugin, ParameterFragmentSize);
44
45	REGISTER_MIDI_INPUT_DRIVER(MidiInputDevicePlugin);
46	REGISTER_MIDI_INPUT_DRIVER_PARAMETER(MidiInputDevicePlugin, ParameterActive);
47	REGISTER_MIDI_INPUT_DRIVER_PARAMETER(MidiInputDevicePlugin, ParameterPorts);
48
49	pSampler = new Sampler;
50
51	// using LOOPBACK instead of ANY to prevent windows firewall
52	// warnings
53	pLSCPServer = new LSCPServer(pSampler, htonl(INADDR_LOOPBACK),
54	htons(LSCP_PORT));
55	pLSCPServer->StartThread();
56	pLSCPServer->WaitUntilInitialized();
57
58	pEventThread = new EventThread(pSampler);
59	pEventThread->StartThread();
60	}
61
62
63	PluginGlobal::~PluginGlobal() {
64	pEventThread->StopThread();
65	pLSCPServer->StopThread();
66	pLSCPServer->RemoveListeners();
67
68	delete pEventThread;
69	delete pSampler;
70	delete pLSCPServer;
71	}
72
73
74	// ************* EventThread *************
75	// *
76
77
78	EventThread::EventThread(Sampler* pSampler) :
79	Thread(false, false, 0, 0),
80	pSampler(pSampler) {
81	}
82
83	int EventThread::Main() {
84	for (;;) {
85	sleep(1);
86	pSampler->fireStatistics();
87	}
88	}
89
90
91	// ************* Plugin *************
92	// *
93
94	PluginGlobal* Plugin::global = 0;
95
96	Plugin::Plugin(bool bDoPreInit) :
97	pAudioDevice(0),
98	pMidiDevice(0) {
99	bPreInitDone = false;
100	if (bDoPreInit) PreInit();
101	}
102
103	void Plugin::PreInit() {
104	if (bPreInitDone) return;
105
106	bPreInitDone = true;
107	if (!global) {
108	global = new PluginGlobal;
109	}
110	global->RefCount++;
111	}
112
113	void Plugin::Init(int SampleRate, int FragmentSize, int Channels) {
114	std::map<String, String> params;
115	params["SAMPLERATE"] = ToString(SampleRate);
116	params["FRAGMENTSIZE"] = ToString(FragmentSize);
117	if (Channels > 0) params["CHANNELS"] = ToString(Channels);
118	pAudioDevice = dynamic_cast<AudioOutputDevicePlugin*>(
119	global->pSampler->CreateAudioOutputDevice(AudioOutputDevicePlugin::Name(), params));
120
121	pMidiDevice = dynamic_cast<MidiInputDevicePlugin*>(
122	global->pSampler->CreateMidiInputDevice(MidiInputDevicePlugin::Name(),
123	std::map<String,String>()));
124	}
125
126	Plugin::~Plugin() {
127	RemoveChannels();
128	if (pAudioDevice) global->pSampler->DestroyAudioOutputDevice(pAudioDevice);
129	if (pMidiDevice) global->pSampler->DestroyMidiInputDevice(pMidiDevice);
130	if (bPreInitDone) {
131	if (--global->RefCount == 0) {
132	delete global;
133	global = 0;
134	}
135	}
136	}
137
138	void Plugin::InitState() {
139	SamplerChannel* channel = global->pSampler->AddSamplerChannel();
140	channel->SetEngineType("gig");
141	channel->SetAudioOutputDevice(pAudioDevice);
142	channel->SetMidiInputDevice(pMidiDevice);
143	channel->SetMidiInputChannel(midi_chan_1);
144	}
145
146
147	String Plugin::GetState() {
148	std::stringstream s;
149
150	s << GLOBAL_VOLUME << '\n';
151	std::map<uint, SamplerChannel*> channels = global->pSampler->GetSamplerChannels();
152	for (std::map<uint, SamplerChannel*>::iterator iter = channels.begin() ;
153	iter != channels.end() ; iter++) {
154	SamplerChannel* channel = iter->second;
155	if (channel->GetAudioOutputDevice() == pAudioDevice) {
156	EngineChannel* engine_channel = channel->GetEngineChannel();
157	String filename = engine_channel->InstrumentFileName();
158	s << channel->GetMidiInputChannel() << ' ' <<
159	engine_channel->Volume() << ' ' <<
160	filename << '\n' <<
161	engine_channel->InstrumentIndex() << ' ' <<
162	engine_channel->GetSolo() << ' ' <<
163	(engine_channel->GetMute() == 1) << '\n';
164	}
165	}
166	return s.str();
167	}
168
169	void Plugin::RemoveChannels() {
170	if(global == NULL) return;
171
172	std::map<uint, SamplerChannel*> channels = global->pSampler->GetSamplerChannels();
173
174	for (std::map<uint, SamplerChannel*>::iterator iter = channels.begin() ;
175	iter != channels.end() ; iter++) {
176	if (iter->second->GetAudioOutputDevice() == pAudioDevice) {
177	global->pSampler->RemoveSamplerChannel(iter->second);
178	}
179	}
180	}
181
182	bool Plugin::SetState(String State) {
183	RemoveChannels();
184
185	std::stringstream s(State);
186	s >> GLOBAL_VOLUME;
187
188	int midiChannel;
189	float volume;
190	while (s >> midiChannel >> volume) {
191	s.ignore();
192	String filename;
193	std::getline(s, filename);
194	int index;
195	bool solo;
196	bool mute;
197	s >> index >> solo >> mute;
198
199	SamplerChannel* channel = global->pSampler->AddSamplerChannel();
200	channel->SetEngineType("gig");
201	channel->SetAudioOutputDevice(pAudioDevice);
202	channel->SetMidiInputDevice(pMidiDevice);
203	channel->SetMidiInputChannel(midi_chan_t(midiChannel));
204
205	EngineChannel* engine_channel = channel->GetEngineChannel();
206	engine_channel->Volume(volume);
207	if (!filename.empty() && index != -1) {
208	InstrumentManager::instrument_id_t id;
209	id.FileName = filename;
210	id.Index = index;
211	InstrumentManager::LoadInstrumentInBackground(id, engine_channel);
212	}
213	if (solo) engine_channel->SetSolo(solo);
214	if (mute) engine_channel->SetMute(1);
215	}
216
217	return true;
218	}
219	}