162 lines
4.2 KiB
C++
162 lines
4.2 KiB
C++
//
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// Created by Alex Birch on 10/09/2017.
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//
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#include <iostream>
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#include "FluidSynthModel.h"
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using namespace std;
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FluidSynthModel::FluidSynthModel() {
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initialised = false;
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channel = 0;
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sfont_id = 0;
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settings = nullptr;
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synth = nullptr;
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}
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FluidSynthModel::~FluidSynthModel() {
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if (initialised) {
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// delete_fluid_audio_driver(driver);
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delete_fluid_synth(synth);
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delete_fluid_settings(settings);
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// delete driver;
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// delete settings;
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}
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}
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void FluidSynthModel::initialise() {
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// if (initialised) {
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// delete_fluid_synth(synth);
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// delete_fluid_settings(settings);
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// }
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settings = new_fluid_settings();
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// https://sourceforge.net/p/fluidsynth/wiki/FluidSettings/
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fluid_settings_setstr(settings, "synth.verbose", "yes");
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synth = new_fluid_synth(settings);
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// loadFont("/Users/birch/Documents/soundfont/EarthBound.sf2");
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fluid_synth_set_gain(synth, 2.0);
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// fluid_synth_bank_select(synth, 0, 3);
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// fluid_handle_inst
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// driver = new_fluid_audio_driver(settings, synth);
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// changePreset(128, 13);
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initialised = true;
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}
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int FluidSynthModel::getChannel() {
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return channel;
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}
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void FluidSynthModel::changePreset(int bank, int preset) {
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fluid_synth_program_select(synth, channel, sfont_id, static_cast<unsigned int>(bank), static_cast<unsigned int>(preset));
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}
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const fluid_preset_t FluidSynthModel::getFirstPreset() {
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fluid_sfont_t* sfont = fluid_synth_get_sfont_by_id(synth, sfont_id);
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jassert(sfont != nullptr);
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sfont->iteration_start(sfont);
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fluid_preset_t preset;
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sfont->iteration_next(sfont, &preset);
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return preset;
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}
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void FluidSynthModel::selectFirstPreset() {
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fluid_preset_t preset = getFirstPreset();
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int offset = fluid_synth_get_bank_offset(synth, sfont_id);
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changePreset(preset.get_banknum(&preset) + offset, preset.get_num(&preset));
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}
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BanksToPresets FluidSynthModel::getBanks() {
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BanksToPresets banksToPresets;
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int soundfontCount = fluid_synth_sfcount(synth);
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if (soundfontCount == 0) {
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// no soundfont selected
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return banksToPresets;
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}
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fluid_sfont_t* sfont = fluid_synth_get_sfont_by_id(synth, sfont_id);
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if(sfont == nullptr) {
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// no soundfont found by that ID
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// the above guard (soundfontCount) protects us for the
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// main case we're expecting. this guard is just defensive programming.
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return banksToPresets;
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}
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int offset = fluid_synth_get_bank_offset(synth, sfont_id);
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sfont->iteration_start(sfont);
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fluid_preset_t preset;
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while(sfont->iteration_next(sfont, &preset)) {
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banksToPresets.insert(BanksToPresets::value_type(
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preset.get_banknum(&preset) + offset,
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*new Preset(
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preset.get_num(&preset),
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preset.get_name(&preset)
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)
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));
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}
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return banksToPresets;
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}
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fluid_synth_t* FluidSynthModel::getSynth() {
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// https://msdn.microsoft.com/en-us/library/hh279669.aspx
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// You can pass a shared_ptr to another function in the following ways:
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// Pass the shared_ptr by value. This invokes the copy constructor, increments the reference count, and makes the callee an owner.
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return synth;
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}
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void FluidSynthModel::onFileNameChanged(const string &absPath) {
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unloadAndLoadFont(absPath);
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eventListeners.call(&FluidSynthModel::Listener::fontChanged, this);
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}
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void FluidSynthModel::unloadAndLoadFont(const string &absPath) {
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// in the base case, there is no font loaded
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if (fluid_synth_sfcount(synth) > 0) {
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fluid_synth_sfunload(synth, sfont_id, 1);
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}
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loadFont(absPath);
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}
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void FluidSynthModel::loadFont(const string &absPath) {
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sfont_id++;
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fluid_synth_sfload(synth, absPath.c_str(), 1);
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selectFirstPreset();
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}
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FluidSynthModel::Listener::~Listener() {
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}
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void FluidSynthModel::Listener::fontChanged(FluidSynthModel *) {
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}
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//==============================================================================
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void FluidSynthModel::addListener (FluidSynthModel::Listener* const newListener)
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{
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eventListeners.add(newListener);
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}
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void FluidSynthModel::removeListener (FluidSynthModel::Listener* const listener)
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{
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eventListeners.remove(listener);
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} |