alphaosc/plugin/parameters.cpp

/*
   Alpha Oscillator POC

   Copyright 2024 Gordon JC Pearce <gordonjcp@gjcp.net>

   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
   copyright notice and this permission notice appear in all copies.

   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
   OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
   CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include "alphaosc.hpp"

void AlphaOsc::initParameter(uint32_t index, Parameter& parameter) {
    // define all the different control input parameters
    switch (index) {
        case pSqrMode:
            // set up Square slider
            parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
            parameter.name = "Square";
            parameter.symbol = "ao_sqr";
            parameter.ranges.min = 0.0f;
            parameter.ranges.max = 4.0f;
            parameter.ranges.def = 1.0f;
            parameter.enumValues.count = 5;
            parameter.enumValues.restrictedMode = true;
            {
                ParameterEnumerationValue* const enumValues = new ParameterEnumerationValue[5];
                enumValues[0].value = 0;
                enumValues[0].label = "Off";
                enumValues[1].value = 1;
                enumValues[1].label = "50%";
                enumValues[2].value = 2;
                enumValues[2].label = "25%";
                enumValues[3].value = 3;
                enumValues[3].label = "PWM";
                // dummy value because Carla won't display integer knobs with less than 5 steps
                enumValues[4].value = 3;
                enumValues[4].label = "Off";
                parameter.enumValues.values = enumValues;
            }
            break;
        case pSawMode:
            // set up Saw slider
            parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
            parameter.name = "Saw";
            parameter.symbol = "ao_saw";
            parameter.ranges.min = 0.0f;
            parameter.ranges.max = 5.0f;
            parameter.ranges.def = 1.0f;
            parameter.enumValues.count = 6;
            parameter.enumValues.restrictedMode = true;
            {
                ParameterEnumerationValue* const enumValues = new ParameterEnumerationValue[6];
                enumValues[0].value = 0;
                enumValues[0].label = "Off";
                enumValues[1].value = 1;
                enumValues[1].label = "On";
                enumValues[2].value = 2;
                enumValues[2].label = "Oct1";
                enumValues[3].value = 3;
                enumValues[3].label = "PWM";
                enumValues[3].value = 4;
                enumValues[3].label = "Oct3";
                enumValues[3].value = 5;
                enumValues[3].label = "Oct1+3";
                parameter.enumValues.values = enumValues;
            }
            break;

        case pSubMode:
            // set up Sub slider
            parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
            parameter.name = "Sub";
            parameter.symbol = "ao_sub";
            parameter.ranges.min = 0.0f;
            parameter.ranges.max = 5.0f;
            parameter.ranges.def = 1.0f;
            parameter.enumValues.count = 6;
            parameter.enumValues.restrictedMode = true;
            {
                ParameterEnumerationValue* const enumValues = new ParameterEnumerationValue[6];
                enumValues[0].value = 0;
                enumValues[0].label = "-1 oct";
                enumValues[1].value = 1;
                enumValues[1].label = "-1 oct 25%";
                enumValues[2].value = 2;
                enumValues[2].label = "-1 oct + 2 oct";
                enumValues[3].value = 3;
                enumValues[3].label = "-1 oct + 3 oct";
                enumValues[3].value = 4;
                enumValues[3].label = "-2 oct";
                enumValues[3].value = 5;
                enumValues[3].label = "-2 oct 25%";
                parameter.enumValues.values = enumValues;
            }
            break;
        case pSubLevel:
            // set up Sub slider
            parameter.hints = kParameterIsAutomatable;
            parameter.name = "Sub Level";
            parameter.symbol = "ao_sublev";
            parameter.ranges.min = 0.0f;
            parameter.ranges.max = 1.0f;
            parameter.ranges.def = 0.0f;
            break;
        case pPWMRate:
            // set up PWM Rate slider
            parameter.hints = kParameterIsAutomatable;
            parameter.name = "PWM Rate";
            parameter.symbol = "ao_pwmrate";
            parameter.ranges.min = 0.0f;
            parameter.ranges.max = 1.0f;
            parameter.ranges.def = 0.5f;
            break;
        case pPWMDepth:
            // set up PWM Depth slider
            parameter.hints = kParameterIsAutomatable;
            parameter.name = "PWM Depth";
            parameter.symbol = "ao_pwmdepth";
            parameter.ranges.min = 0.0f;
            parameter.ranges.max = 1.0f;
            parameter.ranges.def = 0.5f;
            break;
    }
}

void AlphaOsc::setParameterValue(uint32_t index, float value) {
    switch (index) {
        case pSqrMode:
            sqrmode = (uint8_t)value;
            break;
        case pSawMode:
            sawmode = (uint8_t)value;
            break;
        case pSubMode:
            submode = (uint8_t)value;
            break;
        case pSubLevel:
            sublevel = value;
            break;
        case pPWMDepth:
            pwmdepth = value;
            break;
        case pPWMRate:
            pwmrate = value;
            break;
    }
    // we don't need to handle a default condition
    // if there's a parameter left unhandled, it's probably
    // a mistake by the plugin host, and we don't much care
}

float AlphaOsc::getParameterValue(uint32_t index) const {
    switch (index) {
        case pSqrMode:
            return (float)sqrmode;
        case pSawMode:
            return (float)sawmode;
        case pSubMode:
            return (float)submode;
        case pSubLevel:
            return sublevel;
        case pPWMDepth:
            return pwmdepth;
        case pPWMRate:
            return pwmrate;

        default:
            return 0;
    }
    // if we fall all the way through...
    return 2;
}