150 lines
3.0 KiB
C++
150 lines
3.0 KiB
C++
/*
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** sharedmidistate.h
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2014 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SHAREDMIDISTATE_H
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#define SHAREDMIDISTATE_H
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#include "config.h"
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#include "debugwriter.h"
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#include "fluid-fun.h"
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#include <assert.h>
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#include <vector>
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#include <string>
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#define SYNTH_INIT_COUNT 2
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#define SYNTH_SAMPLERATE 44100
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struct Synth
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{
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fluid_synth_t *synth;
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bool inUse;
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};
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struct SharedMidiState
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{
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bool inited;
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std::vector<Synth> synths;
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const std::string &soundFont;
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fluid_settings_t *flSettings;
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SharedMidiState(const Config &conf)
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: inited(false),
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soundFont(conf.midi.soundFont)
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{}
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~SharedMidiState()
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{
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if (!HAVE_FLUID || !inited)
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return;
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fluid.delete_settings(flSettings);
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for (size_t i = 0; i < synths.size(); ++i)
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{
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assert(!synths[i].inUse);
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fluid.delete_synth(synths[i].synth);
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}
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finiFluidFunctions();
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}
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void initIfNeeded(const Config &conf)
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{
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if (inited)
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return;
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inited = true;
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initFluidFunctions();
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if (!HAVE_FLUID)
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return;
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flSettings = fluid.new_settings();
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fluid.settings_setnum(flSettings, "synth.gain", 1.0);
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fluid.settings_setnum(flSettings, "synth.sample-rate", SYNTH_SAMPLERATE);
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fluid.settings_setstr(flSettings, "synth.chorus.active", conf.midi.chorus ? "yes" : "no");
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fluid.settings_setstr(flSettings, "synth.reverb.active", conf.midi.reverb ? "yes" : "no");
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for (size_t i = 0; i < SYNTH_INIT_COUNT; ++i)
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addSynth(false);
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}
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fluid_synth_t *allocateSynth()
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{
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assert(HAVE_FLUID);
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assert(inited);
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size_t i;
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for (i = 0; i < synths.size(); ++i)
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if (!synths[i].inUse)
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break;
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if (i < synths.size())
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{
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fluid_synth_t *syn = synths[i].synth;
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fluid.synth_system_reset(syn);
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synths[i].inUse = true;
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return syn;
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}
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else
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{
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return addSynth(true);
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}
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}
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void releaseSynth(fluid_synth_t *synth)
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{
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size_t i;
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for (i = 0; i < synths.size(); ++i)
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if (synths[i].synth == synth)
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break;
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assert(i < synths.size());
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synths[i].inUse = false;
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}
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private:
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fluid_synth_t *addSynth(bool usedNow)
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{
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fluid_synth_t *syn = fluid.new_synth(flSettings);
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if (!soundFont.empty())
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fluid.synth_sfload(syn, soundFont.c_str(), 1);
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else
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Debug() << "Warning: No soundfont specified, sound might be mute";
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Synth synth;
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synth.inUse = usedNow;
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synth.synth = syn;
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synths.push_back(synth);
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return syn;
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}
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};
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#endif // SHAREDMIDISTATE_H
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