juicysfplugin/Source/FluidSynthModel.cpp

597 lines
23 KiB
C++

//
// Created by Alex Birch on 10/09/2017.
//
#include <iostream>
#include <fluidsynth.h>
#include "FluidSynthModel.h"
#include "MidiConstants.h"
#include "Util.h"
using namespace std;
FluidSynthModel::FluidSynthModel(
AudioProcessorValueTreeState& valueTreeState
// ValueTree& valueTree
// SharesParams& sharedParams
)
: valueTreeState{valueTreeState}
// , valueTree{valueTree}
// , sharedParams{sharedParams}
//, synth{nullptr}
, settings{nullptr, nullptr}
, currentSoundFontAbsPath{}
, currentSampleRate{44100}
, initialised{false}
, sfont_id{0}
, channel{0}/*,
mod(nullptr)*/
{
valueTreeState.addParameterListener("bank", this);
valueTreeState.addParameterListener("preset", this);
valueTreeState.state.addListener(this);
}
FluidSynthModel::~FluidSynthModel() {
valueTreeState.removeParameterListener("bank", this);
valueTreeState.removeParameterListener("preset", this);
valueTreeState.state.removeListener(this);
// if (initialised) {
// delete_fluid_audio_driver(driver);
// delete_fluid_synth(synth);
// delete_fluid_settings(settings);
// delete driver;
// delete settings;
// delete_fluid_mod(mod);
// }
}
int FluidSynthModel::handleMidiEvent(void* data, fluid_midi_event_t* event)
{
// DEBUG_PRINT(fluid_midi_event_get_type(event));
// printf("event type: %d\n", fluid_midi_event_get_type(event));
return 0;
}
void FluidSynthModel::initialise() {
// if (initialised) {
// delete_fluid_synth(synth);
// delete_fluid_settings(settings);
// }
settings = { new_fluid_settings(), delete_fluid_settings };
// deactivate all audio drivers in fluidsynth to avoid FL Studio deadlock when initialising CoreAudio
// after all: we only use fluidsynth to render blocks of audio. it doesn't output to audio driver.
const char *DRV[] {NULL};
fluid_audio_driver_register(DRV);
// handle_midi_event_func_t handler = [](void* data, fluid_midi_event_t* event) -> int {
//
// };
// midiDriver = unique_ptr<fluid_midi_driver_t, decltype(&delete_fluid_midi_driver)>(
// new_fluid_midi_driver(
// settings.get(),
// [](void* data, fluid_midi_event_t* event) -> int {
//
// },
// nullptr),
// delete_fluid_midi_driver);
// https://sourceforge.net/p/fluidsynth/wiki/FluidSettings/
#if JUCE_DEBUG
fluid_settings_setint(settings.get(), "synth.verbose", 1);
#endif
synth = { new_fluid_synth(settings.get()), delete_fluid_synth };
fluid_synth_set_sample_rate(synth.get(), currentSampleRate);
// valueTreeState.getParameter("soundFontPath")->getValue();
// RangedAudioParameter *param {valueTreeState.getParameter("release")};
// jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
// AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
// *castParam = m.getControllerValue();
// if (sharedParams.getSoundFontPath().isNotEmpty()) {
// loadFont(sharedParams.getSoundFontPath());
// changePreset(sharedParams->getBank(), sharedParams->getPreset());
// }
fluid_synth_set_gain(synth.get(), 2.0);
for(int i{SOUND_CTRL1}; i <= SOUND_CTRL10; i++)
{
setControllerValue(i, 0);
}
// fluid_synth_bank_select(synth, 0, 3);
// fluid_handle_inst
// driver = new_fluid_audio_driver(settings, synth);
// changePreset(128, 13);
// float env_amount(12000.0f);
// http://www.synthfont.com/SoundFont_NRPNs.PDF
float env_amount(20000.0f);
// float env_amount(24000.0f);
// note: fluid_chan.c#fluid_channel_init_ctrl()
// all SOUND_CTRL are inited with value of 64, not zero.
// "Just like panning, a value of 64 indicates no change for sound ctrls"
unique_ptr<fluid_mod_t, decltype(&delete_fluid_mod)> mod{new_fluid_mod(), delete_fluid_mod};
//
fluid_mod_set_source1(mod.get(),
static_cast<int>(SOUND_CTRL2), // MIDI CC 71 Timbre/Harmonic Intensity (filter resonance)
FLUID_MOD_CC
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_CONCAVE
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod.get(), 0, 0);
fluid_mod_set_dest(mod.get(), GEN_FILTERQ);
fluid_mod_set_amount(mod.get(), FLUID_PEAK_ATTENUATION);
fluid_synth_add_default_mod(synth.get(), mod.get(), FLUID_SYNTH_ADD);
mod = {new_fluid_mod(), delete_fluid_mod};
fluid_mod_set_source1(mod.get(),
static_cast<int>(SOUND_CTRL3), // MIDI CC 72 Release time
FLUID_MOD_CC
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_LINEAR
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod.get(), 0, 0);
fluid_mod_set_dest(mod.get(), GEN_VOLENVRELEASE);
// fluid_mod_set_amount(mod.get(), 15200.0f);
fluid_mod_set_amount(mod.get(), env_amount);
fluid_synth_add_default_mod(synth.get(), mod.get(), FLUID_SYNTH_ADD);
mod = {new_fluid_mod(), delete_fluid_mod};
fluid_mod_set_source1(mod.get(),
static_cast<int>(SOUND_CTRL4), // MIDI CC 73 Attack time
FLUID_MOD_CC
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_LINEAR
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod.get(), 0, 0);
fluid_mod_set_dest(mod.get(), GEN_VOLENVATTACK);
fluid_mod_set_amount(mod.get(), env_amount);
fluid_synth_add_default_mod(synth.get(), mod.get(), FLUID_SYNTH_ADD);
// soundfont spec says that if cutoff is >20kHz and resonance Q is 0, then no filtering occurs
mod = {new_fluid_mod(), delete_fluid_mod};
fluid_mod_set_source1(mod.get(),
static_cast<int>(SOUND_CTRL5), // MIDI CC 74 Brightness (cutoff frequency, FILTERFC)
FLUID_MOD_CC
| FLUID_MOD_LINEAR
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod.get(), 0, 0);
fluid_mod_set_dest(mod.get(), GEN_FILTERFC);
fluid_mod_set_amount(mod.get(), -2400.0f);
fluid_synth_add_default_mod(synth.get(), mod.get(), FLUID_SYNTH_ADD);
mod = {new_fluid_mod(), delete_fluid_mod};
fluid_mod_set_source1(mod.get(),
static_cast<int>(SOUND_CTRL6), // MIDI CC 75 Decay Time
FLUID_MOD_CC
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_LINEAR
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod.get(), 0, 0);
fluid_mod_set_dest(mod.get(), GEN_VOLENVDECAY);
fluid_mod_set_amount(mod.get(), env_amount);
fluid_synth_add_default_mod(synth.get(), mod.get(), FLUID_SYNTH_ADD);
mod = {new_fluid_mod(), delete_fluid_mod};
fluid_mod_set_source1(mod.get(),
static_cast<int>(SOUND_CTRL10), // MIDI CC 79 undefined
FLUID_MOD_CC
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_CONCAVE
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod.get(), 0, 0);
fluid_mod_set_dest(mod.get(), GEN_VOLENVSUSTAIN);
// fluice_voice.c#fluid_voice_update_param()
// clamps the range to between 0 and 1000, so we'll copy that
fluid_mod_set_amount(mod.get(), 1000.0f);
fluid_synth_add_default_mod(synth.get(), mod.get(), FLUID_SYNTH_ADD);
valueTreeState.state.getChildWithName("soundFont").sendPropertyChangeMessage("path");
// valueTree.sendPropertyChangeMessage("soundFontPath");
// initialised = true;
}
void FluidSynthModel::parameterChanged(const String& parameterID, float newValue) {
if (parameterID == "bank") {
// RangedAudioParameter *param {valueTreeState.getParameter("bank")};
// jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
// AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
// int value{castParam->get()};
int bank, preset;
{
RangedAudioParameter *param {valueTreeState.getParameter("bank")};
jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
bank = castParam->get();
}
{
RangedAudioParameter *param {valueTreeState.getParameter("preset")};
jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
preset = castParam->get();
}
fluid_synth_program_select(
synth.get(),
channel,
sfont_id,
static_cast<unsigned int>(bank),
static_cast<unsigned int>(preset));
// fluid_synth_bank_select(synth.get(), channel, value);
// refreshPresets();
// fluid_sfont_t* sfont{fluid_synth_get_sfont_by_id(synth.get(), sfont_id)};
// fluid_sfont_iteration_start(sfont);
// fluid_preset_t* presetObj{fluid_sfont_iteration_next(sfont)};
// int offset{fluid_synth_get_bank_offset(synth.get(), sfont_id)};
// int bank{fluid_preset_get_banknum(presetObj) + offset};
// int preset{fluid_preset_get_num(presetObj)};
} else if (parameterID == "preset") {
int bank, preset;
{
RangedAudioParameter *param {valueTreeState.getParameter("bank")};
jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
bank = castParam->get();
}
{
RangedAudioParameter *param {valueTreeState.getParameter("preset")};
jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
preset = castParam->get();
}
// int bank{fluid_synth_get_bank_offset(synth.get(), sfont_id)};
fluid_synth_program_select(
synth.get(),
channel,
sfont_id,
static_cast<unsigned int>(bank),
static_cast<unsigned int>(preset));
}
}
void FluidSynthModel::valueTreePropertyChanged(ValueTree& treeWhosePropertyHasChanged,
const Identifier& property) {
if (treeWhosePropertyHasChanged.getType() == StringRef("soundFont")) {
// if (&treeWhosePropertyHasChanged == &valueTree) {
if (property == StringRef("path")) {
String soundFontPath{treeWhosePropertyHasChanged.getProperty("path", "")};
if (soundFontPath.isNotEmpty()) {
loadFont(soundFontPath);
}
}
}
}
void FluidSynthModel::setControllerValue(int controller, int value) {
fluid_midi_event_t *midi_event(new_fluid_midi_event());
fluid_midi_event_set_type(midi_event, static_cast<int>(CONTROL_CHANGE));
fluid_midi_event_set_channel(midi_event, channel);
fluid_midi_event_set_control(midi_event, controller);
fluid_midi_event_set_value(midi_event, value);
fluid_synth_handle_midi_event(synth.get(), midi_event);
delete_fluid_midi_event(midi_event);
// fluid_channel_set_cc(channel, i, 0);
}
int FluidSynthModel::getChannel() {
return channel;
}
void FluidSynthModel::changePreset(int bank, int preset) {
if (bank == -1 || preset == -1) {
unique_ptr<BankAndPreset> bankAndPreset = getFirstBankAndPreset();
bank = bankAndPreset->getBank();
preset = bankAndPreset->getPreset();
}
changePresetImpl(bank, preset);
// sharedParams->setPreset(preset);
// sharedParams->setBank(bank);
}
void FluidSynthModel::changePresetImpl(int bank, int preset) {
fluid_synth_program_select(synth.get(), channel, sfont_id, static_cast<unsigned int>(bank), static_cast<unsigned int>(preset));
}
fluid_preset_t* FluidSynthModel::getFirstPreset() {
fluid_sfont_t* sfont = fluid_synth_get_sfont_by_id(synth.get(), sfont_id);
jassert(sfont != nullptr);
fluid_sfont_iteration_start(sfont);
return fluid_sfont_iteration_next(sfont);
}
unique_ptr<BankAndPreset> FluidSynthModel::getFirstBankAndPreset() {
fluid_preset_t* preset = getFirstPreset();
int offset = fluid_synth_get_bank_offset(synth.get(), sfont_id);
return make_unique<BankAndPreset>(fluid_preset_get_banknum(preset) + offset, fluid_preset_get_num(preset));
};
void FluidSynthModel::selectFirstPreset() {
fluid_preset_t* preset = getFirstPreset();
int offset = fluid_synth_get_bank_offset(synth.get(), sfont_id);
changePreset(fluid_preset_get_banknum(preset) + offset, fluid_preset_get_num(preset));
}
BanksToPresets FluidSynthModel::getBanks() {
BanksToPresets banksToPresets;
int soundfontCount = fluid_synth_sfcount(synth.get());
if (soundfontCount == 0) {
// no soundfont selected
return banksToPresets;
}
fluid_sfont_t* sfont = fluid_synth_get_sfont_by_id(synth.get(), sfont_id);
if(sfont == nullptr) {
// no soundfont found by that ID
// the above guard (soundfontCount) protects us for the
// main case we're expecting. this guard is just defensive programming.
return banksToPresets;
}
int offset = fluid_synth_get_bank_offset(synth.get(), sfont_id);
fluid_sfont_iteration_start(sfont);
for(fluid_preset_t* preset = fluid_sfont_iteration_next(sfont);
preset != nullptr;
preset = fluid_sfont_iteration_next(sfont)) {
banksToPresets.insert(BanksToPresets::value_type(
fluid_preset_get_banknum(preset) + offset,
*new Preset(
fluid_preset_get_num(preset),
fluid_preset_get_name(preset)
)
));
}
return banksToPresets;
}
shared_ptr<fluid_synth_t> FluidSynthModel::getSynth() {
// https://msdn.microsoft.com/en-us/library/hh279669.aspx
// You can pass a shared_ptr to another function in the following ways:
// Pass the shared_ptr by value. This invokes the copy constructor, increments the reference count, and makes the callee an owner.
return synth;
}
void FluidSynthModel::onFileNameChanged(const String &absPath, int bank, int preset) {
if (!shouldLoadFont(absPath)) {
return;
}
unloadAndLoadFont(absPath);
changePreset(bank, preset);
ValueTree valueTree{valueTreeState.state.getChildWithName("soundFont")};
valueTree.setPropertyExcludingListener(this, "path", absPath, nullptr);
// valueTree.setPropertyExcludingListener(this, "soundFontPath", absPath, nullptr);
// sharedParams.setSoundFontPath(absPath);
// eventListeners.call(&FluidSynthModel::Listener::fontChanged, this, absPath);
}
void FluidSynthModel::unloadAndLoadFont(const String &absPath) {
// in the base case, there is no font loaded
if (fluid_synth_sfcount(synth.get()) > 0) {
fluid_synth_sfunload(synth.get(), sfont_id, 1);
}
loadFont(absPath);
}
void FluidSynthModel::loadFont(const String &absPath) {
currentSoundFontAbsPath = absPath;
sfont_id++;
fluid_synth_sfload(synth.get(), absPath.toStdString().c_str(), 1);
refreshBanks();
}
void FluidSynthModel::refreshBanks() {
fluid_sfont_t* sfont {fluid_synth_get_sfont_by_id(synth.get(), sfont_id)};
ValueTree banks{"banks"};
if (sfont != nullptr) {
int greatestEncounteredBank{-1};
ValueTree bank;
fluid_sfont_iteration_start(sfont);
for(fluid_preset_t* preset {fluid_sfont_iteration_next(sfont)};
preset != nullptr;
preset = fluid_sfont_iteration_next(sfont)) {
int bankNum{fluid_preset_get_banknum(preset)};
if (bankNum > greatestEncounteredBank) {
if (greatestEncounteredBank > -1) {
banks.appendChild(bank, nullptr);
}
bank = { "bank", {
{ "num", bankNum }
} };
greatestEncounteredBank = bankNum;
}
bank.appendChild({ "preset", {
{ "num", fluid_preset_get_num(preset) },
{ "name", String{fluid_preset_get_name(preset)} }
}, {} }, nullptr);
}
if (greatestEncounteredBank > -1) {
banks.appendChild(bank, nullptr);
}
}
valueTreeState.state.getChildWithName("banks").copyPropertiesAndChildrenFrom(banks, nullptr);
valueTreeState.state.getChildWithName("banks").sendPropertyChangeMessage("synthetic");
#if JUCE_DEBUG
unique_ptr<XmlElement> xml{valueTreeState.state.createXml()};
Logger::outputDebugString(xml->createDocument("",false,false));
#endif
}
// void FluidSynthModel::refreshBanks() {
// fluid_sfont_t* sfont {fluid_synth_get_sfont_by_id(synth.get(), sfont_id)};
// ValueTree banks{"banks"};
// if (sfont != nullptr) {
// // int initialBankOffset{fluid_synth_get_bank_offset(synth.get(), sfont_id)};
// banks.appendChild({ "bank", {
// { "num", /* initialBankOffset */ 0 },
// }, {} }, nullptr);
// // int greatestPersistedBank{initialBankOffset};
// int greatestPersistedBank{0};
// fluid_sfont_iteration_start(sfont);
// for(fluid_preset_t* preset {fluid_sfont_iteration_next(sfont)};
// preset != nullptr;
// preset = fluid_sfont_iteration_next(sfont)) {
// int bank{fluid_preset_get_banknum(preset) /* + initialBankOffset */};
// if (bank > greatestPersistedBank) {
// banks.appendChild({ "bank", {
// { "num", bank },
// }, {} }, nullptr);
// greatestPersistedBank = bank;
// }
// }
// }
// valueTreeState.state.getChildWithName("banks").copyPropertiesAndChildrenFrom(banks, nullptr);
// valueTreeState.state.getChildWithName("banks").sendPropertyChangeMessage("synthetic");
// refreshPresets();
// }
// void FluidSynthModel::refreshPresets() {
// fluid_sfont_t* sfont {fluid_synth_get_sfont_by_id(synth.get(), sfont_id)};
// ValueTree presets{"presets"};
// if (sfont != nullptr) {
// RangedAudioParameter *param {valueTreeState.getParameter("bank")};
// jassert(dynamic_cast<AudioParameterInt*> (param) != nullptr);
// AudioParameterInt* castParam {dynamic_cast<AudioParameterInt*> (param)};
// int value{castParam->get()};
// // int initialBank{fluid_synth_get_bank_offset(synth.get(), sfont_id)};
// fluid_sfont_iteration_start(sfont);
// for(fluid_preset_t* preset {fluid_sfont_iteration_next(sfont)};
// preset != nullptr;
// preset = fluid_sfont_iteration_next(sfont)) {
// int bank{fluid_preset_get_banknum(preset) /* + initialBank */};
// if (bank == value) {
// presets.appendChild({ "preset", {
// { "num", fluid_preset_get_num(preset) },
// { "name", String{fluid_preset_get_name(preset)} }
// }, {} }, nullptr);
// }
// }
// }
// valueTreeState.state.getChildWithName("presets").copyPropertiesAndChildrenFrom(presets, nullptr);
// valueTreeState.state.getChildWithName("presets").sendPropertyChangeMessage("synthetic");
// }
// void FluidSynthModel::refreshBanksAndPresets() {
// fluid_sfont_t* sfont {fluid_synth_get_sfont_by_id(synth.get(), sfont_id)};
// ValueTree banks{"banks"};
// ValueTree presets{"presets"};
// if (sfont != nullptr) {
// int initialBankOffset{fluid_synth_get_bank_offset(synth.get(), sfont_id)};
// banks.appendChild({ "bank", {
// { "num", initialBankOffset },
// }, {} }, nullptr);
// int greatestPersistedBank{initialBankOffset};
// fluid_sfont_iteration_start(sfont);
// for(fluid_preset_t* preset {fluid_sfont_iteration_next(sfont)};
// preset != nullptr;
// preset = fluid_sfont_iteration_next(sfont)) {
// int bankOffset{fluid_preset_get_banknum(preset) + initialBankOffset};
// // ValueTree preset{"preset"};
// // banksToPresets.insert(BanksToPresets::value_type(
// // fluid_preset_get_banknum(preset) + bankOffset,
// // *new Preset(
// // fluid_preset_get_num(preset),
// // fluid_preset_get_name(preset)
// // )
// // ));
// if (bankOffset > greatestPersistedBank) {
// banks.appendChild({ "bank", {
// { "num", bankOffset },
// }, {} }, nullptr);
// greatestPersistedBank = bankOffset;
// }
// presets.appendChild({ "preset", {
// { "num", fluid_preset_get_num(preset) },
// { "name", String{fluid_preset_get_name(preset)} }
// }, {} }, nullptr);
// }
// }
// // valueTreeState.state.getChildWithName("banks") = banks;
// // valueTreeState.state.getChildWithName("presets") = presets;
// valueTreeState.state.getChildWithName("banks").copyPropertiesAndChildrenFrom(banks, nullptr);
// valueTreeState.state.getChildWithName("presets").copyPropertiesAndChildrenFrom(presets, nullptr);
// valueTreeState.state.getChildWithName("banks").sendPropertyChangeMessage("synthetic");
// valueTreeState.state.getChildWithName("presets").sendPropertyChangeMessage("synthetic");
// #if JUCE_DEBUG
// unique_ptr<XmlElement> xml{valueTreeState.state.createXml()};
// Logger::outputDebugString(xml->createDocument("",false,false));
// #endif
// }
// FluidSynthModel::Listener::~Listener() {
// }
bool FluidSynthModel::shouldLoadFont(const String &absPath) {
if (absPath.isEmpty()) {
return false;
}
if (absPath == currentSoundFontAbsPath) {
return false;
}
return true;
}
// void FluidSynthModel::Listener::fontChanged(FluidSynthModel * model, const String &absPath) {
// }
const String& FluidSynthModel::getCurrentSoundFontAbsPath() {
return currentSoundFontAbsPath;
}
//==============================================================================
// void FluidSynthModel::addListener (FluidSynthModel::Listener* const newListener)
// {
// eventListeners.add(newListener);
// }
// void FluidSynthModel::removeListener (FluidSynthModel::Listener* const listener)
// {
// eventListeners.remove(listener);
// }
void FluidSynthModel::setSampleRate(float sampleRate) {
currentSampleRate = sampleRate;
// https://stackoverflow.com/a/40856043/5257399
// test if a smart pointer is null
if (!synth) {
// don't worry; we'll do this in initialise phase regardless
return;
}
fluid_synth_set_sample_rate(synth.get(), sampleRate);
}