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#if USE_FLUIDSYNTH
/* Copyright 2004-2011 Jan Pekau
This file is part of Freewheeling.
Freewheeling 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.
Freewheeling 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 Freewheeling. If not, see <http://www.gnu.org/licenses/>. */
#include <sys/time.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <pthread.h>
#include <sched.h>
#include <sys/mman.h>
#include "fweelin_fluidsynth.h"
#define fluid_sfont_iteration_start(_sf) (*(_sf)->iteration_start)(_sf)
#define fluid_sfont_iteration_next(_sf,_pr) (*(_sf)->iteration_next)(_sf,_pr)
#define fluid_preset_get_name(_preset) (*(_preset)->get_name)(_preset)
#define fluid_preset_get_banknum(_preset) (*(_preset)->get_banknum)(_preset)
#define fluid_preset_get_num(_preset) (*(_preset)->get_num)(_preset)
void FluidSynthParam_Int::Send(fluid_settings_t *settings) {
printf("FLUID: Setting parameter '%s' = '%d'\n",name,val);
fluid_settings_setint(settings, name, val);
};
void FluidSynthParam_Num::Send(fluid_settings_t *settings) {
printf("FLUID: Setting parameter '%s' = '%f'\n",name,val);
fluid_settings_setnum(settings, name, val);
};
void FluidSynthParam_Str::Send(fluid_settings_t *settings) {
printf("FLUID: Setting parameter '%s' = '%s'\n",name,val);
fluid_settings_setstr(settings, name, val);
};
FluidSynthProcessor::FluidSynthProcessor(Fweelin *app, char stereo) :
Processor(app), stereo(stereo), enable(1) {
nframes_t bufsz = app->getBUFSZ();
leftbuf = new sample_t[bufsz];
rightbuf = new sample_t[bufsz];
// Setup FluidSynth
settings = new_fluid_settings();
{
FluidSynthParam *cur = app->getCFG()->GetFluidParam();
while (cur != 0) {
cur->Send(settings);
cur = cur->next;
}
}
// Set sampling rate
fluid_settings_setnum(settings, "synth.sample-rate",
app->getAUDIO()->get_srate());
// Create synth
synth = new_fluid_synth(settings);
// Set interpolation quality
printf("FLUID: Setting interpolation quality: %d\n",
app->getCFG()->GetFluidInterpolation());
fluid_synth_set_interp_method(synth,-1,
app->getCFG()->GetFluidInterpolation());
// User-specified global fluidsynth tuning
float tuning = app->getCFG()->GetFluidTuning();
if (tuning != 0.0) {
printf("FLUID: Setting pitch tuning: %.2f cents\n",
tuning);
// Create tuning for each key in octave
double pitches[12];
for (int i = 0; i < 12; i++)
pitches[i] = tuning;
fluid_synth_activate_octave_tuning(synth, 0, 0, "DETUNE", pitches, false);
// Select tuning
for (int i = 0; i < MAX_MIDI_CHANNELS; i++)
fluid_synth_activate_tuning(synth, i, 0, 0, false);
} else
printf("FLUID: Using default tuning\n");
// Load soundfonts
{
FluidSynthSoundFont *cur = app->getCFG()->GetFluidFont();
while (cur != 0) {
printf("FLUID: Loading SoundFont '%s'\n",cur->name);
fluid_synth_sfload(synth,cur->name,1);
cur = cur->next;
}
}
app->getEMG()->ListenEvent(this,0,T_EV_FluidSynthEnable);
};
FluidSynthProcessor::~FluidSynthProcessor() {
app->getEMG()->UnlistenEvent(this,0,T_EV_FluidSynthEnable);
delete_fluid_synth(synth);
delete_fluid_settings(settings);
delete[] leftbuf;
delete[] rightbuf;
};
void FluidSynthProcessor::process(char pre, nframes_t len,
AudioBuffers *ab) {
if (!pre) {
// Map our output to the end of the external inputs
ab->ins[0][ab->numins_ext] = leftbuf;
if (stereo)
ab->ins[1][ab->numins_ext] = rightbuf;
else
ab->ins[1][ab->numins_ext] = 0;
if (enable) {
// Run synth DSP
fluid_synth_write_float(synth, len,
leftbuf, 0, 1,
rightbuf, 0, 1);
if (!stereo) {
// Mono, so fold the right channel into the left like pudding
for (nframes_t l = 0; l < len; l++)
leftbuf[l] = (leftbuf[l] + rightbuf[l]) / 2;
}
} else {
// Silence, not enabled
memset(leftbuf,0,sizeof(sample_t) * len);
if (stereo)
memset(rightbuf,0,sizeof(sample_t) * len);
}
}
};
// Read new current patch from 'patches' and send patch change to synth
void FluidSynthProcessor::SendPatchChange(PatchItem *p) {
fluid_synth_program_select(synth, p->channel,
p->id, p->bank, p->prog);
};
// Sets up our internal patch list based on loaded soundfonts
void FluidSynthProcessor::SetupPatches() {
fluid_preset_t preset;
PatchBrowser *br = (PatchBrowser *) app->getBROWSER(B_Patch);
if (br != 0) {
// Add FluidSynth patch bank
int fluidchan = app->getCFG()->GetFluidChannel();
br->PB_AddBegin(new PatchBank(0,-1,0)); // Use port 0 for FluidSynth
// Store patches
int sfcnt = fluid_synth_sfcount(synth);
for (int i = 0; i < sfcnt; i++) {
fluid_sfont_t *curfont = fluid_synth_get_sfont(synth,i);
fluid_sfont_iteration_start(curfont);
while (fluid_sfont_iteration_next(curfont, &preset))
br->AddItem(new PatchItem(fluid_sfont_get_id(curfont),
fluid_preset_get_banknum(&preset),
fluid_preset_get_num(&preset),
fluidchan,
fluid_preset_get_name(&preset)));
if (i+1 < sfcnt) {
// End of soundfont- put in a divider
br->AddItem(new BrowserDivision());
}
}
}
};
void FluidSynthProcessor::ReceiveMIDIEvent(Event *ev) {
FloConfig *fs = app->getCFG();
switch (ev->GetType()) {
case T_EV_Input_MIDIController :
if (enable)
{
MIDIControllerInputEvent *mcev = (MIDIControllerInputEvent *) ev;
fluid_synth_cc(synth,app->getCFG()->GetFluidChannel(),
mcev->ctrl,mcev->val);
}
break;
case T_EV_Input_MIDIPitchBend :
if (enable)
{
MIDIPitchBendInputEvent *mpev = (MIDIPitchBendInputEvent *) ev;
fluid_synth_pitch_bend(synth,app->getCFG()->GetFluidChannel(),
mpev->val + FLUIDSYNTH_PITCHBEND_CENTER);
}
break;
case T_EV_Input_MIDIKey :
if (enable)
{
MIDIKeyInputEvent *mkev = (MIDIKeyInputEvent *) ev;
if (mkev->down)
fluid_synth_noteon(synth,
app->getCFG()->GetFluidChannel(),
mkev->notenum+fs->transpose,
mkev->vel);
else
fluid_synth_noteoff(synth,
app->getCFG()->GetFluidChannel(),
mkev->notenum+fs->transpose);
}
break;
default:
break;
}
};
void FluidSynthProcessor::ReceiveEvent(Event *ev, EventProducer *from) {
switch (ev->GetType()) {
case T_EV_FluidSynthEnable :
{
FluidSynthEnableEvent *fev = (FluidSynthEnableEvent *) ev;
// OK!
if (CRITTERS)
printf("FLUID: Received FluidSynthEnable (%s)\n",
(fev->enable ? "on" : "off"));
SetEnable(fev->enable);
}
break;
default:
break;
}
}
#endif
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