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152 lines
3.2 KiB
152 lines
3.2 KiB
/*
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Copyright 2013 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#ifndef __CONTROLLERS_H
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#define __CONTROLLERS_H
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#include <stdint.h>
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#include "synth.h"
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include "fm_core.h"
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// State of MIDI controllers
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const uint8_t kControllerPitch = 0;
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const uint8_t kControllerPitchRange = 1;
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const uint8_t kControllerPitchStep = 2;
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const uint8_t kControllerPortamentoGlissando = 3;
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class FmMod {
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public:
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uint8_t range;
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bool pitch;
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bool amp;
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bool eg;
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uint8_t ctrl_mode;
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FmMod()
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{
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range = 0;
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ctrl_mode = 0;
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pitch = false;
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amp = false;
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eg = false;
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}
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void setRange(uint8_t r)
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{
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range = r < 0 || r > 99 ? 0 : r;
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}
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uint8_t getRange(void)
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{
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return (range);
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}
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void setTarget(uint8_t assign)
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{
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assign = assign < 0 && assign > 7 ? 0 : assign;
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pitch = assign & 1; // PITCH
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amp = assign & 2; // AMP
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eg = assign & 4; // EG
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}
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uint8_t getTarget(void)
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{
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return (pitch & amp & eg);
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}
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void setMode(uint8_t m)
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{
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ctrl_mode = m > MIDI_CONTROLLER_MODE_MAX ? 0 : m;
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}
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};
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class Controllers {
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void applyMod(int cc, FmMod &mod)
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{
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uint8_t total = 0;
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float range = mod.range / 100.0;
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switch (mod.ctrl_mode)
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{
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case 0:
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total = uint8_t(float(cc) * range); // LINEAR mode
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break;
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case 1:
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total = uint8_t(127.0 * range - (float(cc) * range)); // REVERSE mode
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break;
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case 2:
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total = uint8_t(range * float(cc) + (1.0 - range) * 127.0); // DIRECT BC mode by Thierry (opus.quatre)
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break;
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}
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if (mod.amp)
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amp_mod = std::max(amp_mod, total);
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if (mod.pitch)
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pitch_mod = std::max(pitch_mod, total);
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if (mod.eg)
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eg_mod = std::max(eg_mod, total);
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}
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public:
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int32_t values_[4];
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uint8_t amp_mod;
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uint8_t pitch_mod;
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uint8_t eg_mod;
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uint8_t aftertouch_cc;
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uint8_t breath_cc;
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uint8_t foot_cc;
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uint8_t modwheel_cc;
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bool portamento_enable_cc;
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int32_t portamento_cc;
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bool portamento_gliss_cc;
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int32_t masterTune;
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uint8_t opSwitch;
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FmMod wheel;
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FmMod foot;
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FmMod breath;
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FmMod at;
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Controllers() {
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amp_mod = 0;
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pitch_mod = 0;
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eg_mod = 0;
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}
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void refresh() {
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amp_mod = pitch_mod = eg_mod = 0;
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applyMod(modwheel_cc, wheel);
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applyMod(breath_cc, breath);
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applyMod(foot_cc, foot);
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applyMod(aftertouch_cc, at);
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if ( ! ((wheel.eg || foot.eg) || (breath.eg || at.eg)) )
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eg_mod = 127;
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}
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class FmCore* core;
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};
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#endif
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