mkxp-freebird/src/sharedmidistate.h
Jonas Kulla 757a1d5e39 Load fluidsynth entrypoints dynamically (and make them optional)
This removes the static dependency on fluidsynth being present
at buildtime (even headers aren't needed anymore).

Even though midi is a default format for the RPG XP/VX series,
it has fallen more and more out of use, with VX Ace completely
abandoning it from the RTP and making ogg vorbis the de facto
standard. Midi support is kept for legacy reasons, but isn't
encouraged. On top of all this, fluidsynth together with glib
is a heavy dependency that often times won't even be used.
Making it optional at build time is an attempt to unify and
keep build config fragmentation low.

In RGSS3, fluidsynth / midi is not initialized at all by
default, but rather on demand when either a midi track is
played back or Audio.setup_midi is called.
2014-09-09 00:08:32 +02:00

149 lines
3 KiB
C++

/*
** sharedmidistate.h
**
** This file is part of mkxp.
**
** Copyright (C) 2014 Jonas Kulla <Nyocurio@gmail.com>
**
** mkxp 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.
**
** mkxp 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 mkxp. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SHAREDMIDISTATE_H
#define SHAREDMIDISTATE_H
#include "config.h"
#include "debugwriter.h"
#include "fluid-fun.h"
#include <assert.h>
#include <vector>
#include <string>
#define SYNTH_INIT_COUNT 2
#define SYNTH_SAMPLERATE 44100
struct Synth
{
fluid_synth_t *synth;
bool inUse;
};
struct SharedMidiState
{
bool inited;
std::vector<Synth> synths;
const std::string &soundFont;
fluid_settings_t *flSettings;
SharedMidiState(const Config &conf)
: inited(false),
soundFont(conf.midi.soundFont)
{}
~SharedMidiState()
{
if (!HAVE_FLUID || !inited)
return;
fluid.delete_settings(flSettings);
for (size_t i = 0; i < synths.size(); ++i)
{
assert(!synths[i].inUse);
fluid.delete_synth(synths[i].synth);
}
finiFluidFunctions();
}
void initIfNeeded(const Config &conf)
{
if (inited)
return;
inited = true;
initFluidFunctions();
if (!HAVE_FLUID)
return;
flSettings = fluid.new_settings();
fluid.settings_setnum(flSettings, "synth.gain", 1.0);
fluid.settings_setnum(flSettings, "synth.sample-rate", SYNTH_SAMPLERATE);
fluid.settings_setstr(flSettings, "synth.chorus.active", conf.midi.chorus ? "yes" : "no");
fluid.settings_setstr(flSettings, "synth.reverb.active", conf.midi.reverb ? "yes" : "no");
for (size_t i = 0; i < SYNTH_INIT_COUNT; ++i)
addSynth(false);
}
fluid_synth_t *allocateSynth()
{
assert(HAVE_FLUID);
assert(inited);
size_t i;
for (i = 0; i < synths.size(); ++i)
if (!synths[i].inUse)
break;
if (i < synths.size())
{
fluid_synth_t *syn = synths[i].synth;
fluid.synth_system_reset(syn);
synths[i].inUse = true;
return syn;
}
else
{
return addSynth(true);
}
}
void releaseSynth(fluid_synth_t *synth)
{
size_t i;
for (i = 0; i < synths.size(); ++i)
if (synths[i].synth == synth)
break;
assert(i < synths.size());
synths[i].inUse = false;
}
private:
fluid_synth_t *addSynth(bool usedNow)
{
fluid_synth_t *syn = fluid.new_synth(flSettings);
if (!soundFont.empty())
fluid.synth_sfload(syn, soundFont.c_str(), 1);
else
Debug() << "Warning: No soundfont specified, sound might be mute";
Synth synth;
synth.inUse = usedNow;
synth.synth = syn;
synths.push_back(synth);
return syn;
}
};
#endif // SHAREDMIDISTATE_H