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wavetable loading checkpoint

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2026-02-07 15:13:47 -06:00
parent 537f571f6a
commit 3f335343e3
6 changed files with 51 additions and 15 deletions
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13
src/synth/WavetableController.cpp
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@@ -3,6 +3,7 @@
#include <cmath>
#include <iostream>
#include <fstream>
WavetableController::WavetableController() {
// load from files
@@ -17,17 +18,19 @@ void WavetableController::init() {
wavetables_.resize(4); // resize for however many files we find
// don't really know how the files are gonna work
// but I'd like two files- a yaml that contains metadata like name, length, range, datatype, etc.
// and the main data be just a big array of that data type in a binary file
// although having it all in a single bin makes the most sense with the metadata being in the header
// wavetable file structure is best explained in scripts/generate_wavetable.py
// read the wavetable file
std::ifstream inputFile("config/wavetables/sine.wt", std::ios::in | std::ios::binary);
if(!inputFile) std::cout << "error opening file" << std::endl;
inputFile.read(reinterpret_cast<char*>(wavetables_[0].data()), SYNTH_WAVETABLE_SIZE * sizeof(float));
float phase = 0.0f;
float phaseInc = 2.0f * M_PI / static_cast<float>(SYNTH_WAVETABLE_SIZE);
for(int i = 0; i < SYNTH_WAVETABLE_SIZE; i++) {
wavetables_[0][i] = std::sin(phase) / 0.707f; // sine
//wavetables_[0][i] = std::sin(phase) / 0.707f; // sine
wavetables_[1][i] = (phase >= M_PI) ? 1.0f : -1.0f; // square
wavetables_[2][i] = ((phase / M_PI) - 1.0f) / 0.577f; // saw