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add license headers

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This commit is contained in:
Chris
2025-11-06 11:05:54 +01:00
parent a362ab6c91
commit 12ae07d115
22 changed files with 739 additions and 108 deletions
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156
synth/triplex.h
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@@ -1,6 +1,30 @@
/*
* triplex.h
* Copyright (c) 2025 Christopher Herb
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#pragma once
#include "audio_buffer.h"
#include "audio_math.h"
#include "../util/audio_buffer.h"
#include "../util/audio_math.h"
#include "voice_allocator.h"
#include <cmath>
#include <random>
@@ -45,7 +69,8 @@ inline float tx_wrap(float& phase)
return phase;
}
inline float tx_sineosc_process_sample(tx_sineosc& s, bool trigger, float frequency, float phase_modulation = 0.f)
inline float tx_sineosc_process_sample(tx_sineosc& s, bool trigger, float frequency,
float phase_modulation = 0.f)
{
if (trigger) {
if (s.phase_reset) s.phase = 0.f;
@@ -133,15 +158,18 @@ inline void tx_envelope_init(tx_envelope& e, double samplerate, bool retrigger =
e.retrigger = retrigger;
}
inline size_t tx_mtos(float ms, double samplerate) { return static_cast<size_t>(ms * samplerate / 1000.f); }
inline size_t tx_mtos(float ms, double samplerate)
{
return static_cast<size_t>(ms * samplerate / 1000.f);
}
inline float tx_lerp(float x1, float y1, float x2, float y2, float x)
{
return y1 + (((x - x1) * (y2 - y1)) / (x2 - x1));
}
inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger, float _attack_mod = 0,
float _decay_mod = 0)
inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger,
float _attack_mod = 0, float _decay_mod = 0)
{
size_t attack_mid_x1 = tx_mtos(e.attack1_rate + (float)_attack_mod, e.samplerate);
size_t attack_mid_x2 = tx_mtos(e.attack2_rate + (float)_attack_mod, e.samplerate);
@@ -162,7 +190,8 @@ inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger,
if (e.state == attack1) {
// while in attack phase
if (e.phase < attack_mid_x1) {
e.level = tx_lerp(0, e.start_level, (float)attack_mid_x1, e.attack1_level, (float)e.phase);
e.level = tx_lerp(0, e.start_level, (float)attack_mid_x1, e.attack1_level,
(float)e.phase);
e.phase += 1;
}
// reset phase if parameter was changed
@@ -177,7 +206,8 @@ inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger,
if (e.state == attack2) {
// while in attack phase
if (e.phase < attack_mid_x2) {
e.level = tx_lerp(0, e.attack1_level, (float)attack_mid_x2, 1, (float)e.phase);
e.level =
tx_lerp(0, e.attack1_level, (float)attack_mid_x2, 1, (float)e.phase);
e.phase += 1;
}
// reset phase if parameter was changed
@@ -219,7 +249,8 @@ inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger,
if (e.state == decay2) {
// while in decay phase
if (e.phase < decay_mid_x2) {
e.level = tx_lerp(0, e.decay1_level, (float)decay_mid_x2, e.sustain_level, (float)e.phase);
e.level = tx_lerp(0, e.decay1_level, (float)decay_mid_x2, e.sustain_level,
(float)e.phase);
e.phase += 1;
}
// reset phase if parameter was changed
@@ -240,7 +271,8 @@ inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger,
if (e.state == release1) {
// while in release phase
if (e.phase < release_mid_x1) {
e.level = tx_lerp(0, e.sustain_level, (float)release_mid_x1, e.release1_level, (float)e.phase);
e.level = tx_lerp(0, e.sustain_level, (float)release_mid_x1, e.release1_level,
(float)e.phase);
e.phase += 1;
}
// reset phase if parameter was changed
@@ -255,7 +287,8 @@ inline float tx_envelope_process_sample(tx_envelope& e, bool gate, bool trigger,
if (e.state == release2) {
// while in release phase
if (e.phase < release_mid_x2) {
e.level = tx_lerp(0, e.release1_level, (float)release_mid_x2, 0, (float)e.phase);
e.level =
tx_lerp(0, e.release1_level, (float)release_mid_x2, 0, (float)e.phase);
e.phase += 1;
}
// reset phase if parameter was changed
@@ -293,8 +326,8 @@ inline void tx_operator_init(tx_operator& op, double samplerate)
tx_sineosc_init(op.oscillator, samplerate);
}
inline float tx_operator_process_sample(tx_operator& op, bool gate, bool trigger, float frequency, float velocity,
float pm = 0.f)
inline float tx_operator_process_sample(tx_operator& op, bool gate, bool trigger,
float frequency, float velocity, float pm = 0.f)
{
float env = tx_envelope_process_sample(op.envelope, gate, trigger);
@@ -336,16 +369,19 @@ inline void tx_voice_init(tx_state& s, double samplerate)
tx_operator_init(s.op3, samplerate);
}
inline void tx_voice_process_block(tx_state& t, voice_state& s, float** audio, size_t num_frames,
inline void tx_voice_process_block(tx_state& t, voice_state& s, float** audio,
size_t num_frames,
const vector<audio_buffer<float>>& mods = {})
{
float frequency = midi_to_frequency(s.midi_note + t.pitch_mod + t.additional_pitch_mod);
float frequency =
midi_to_frequency(s.midi_note + t.pitch_mod + t.additional_pitch_mod);
for (int i = 0; i < num_frames; i++) {
voice_process_event_for_frame(s, i);
float pitch_env_signal = tx_envelope_process_sample(t.pitch_env, s.gate, s.trigger) * t.pitch_env_amt;
float pitch_env_signal =
tx_envelope_process_sample(t.pitch_env, s.gate, s.trigger) * t.pitch_env_amt;
float pitched_freq = frequency + pitch_env_signal;
float output = 0.f;
@@ -354,77 +390,102 @@ inline void tx_voice_process_block(tx_state& t, voice_state& s, float** audio, s
if (t.algorithm == 0) {
float fb_freq = frequency * t.op3.ratio;
float fb_mod_index = (t.feedback_amt * MOD_INDEX_COEFF);
float fb_signal = tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) * fb_mod_index;
float fb_signal =
tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) *
fb_mod_index;
float op3_Freq = frequency * t.op3.ratio;
float op3_mod_index = (t.op3.amplitude * MOD_INDEX_COEFF);
float op3_signal =
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_Freq, s.velocity, fb_signal) * op3_mod_index;
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_Freq, s.velocity,
fb_signal) *
op3_mod_index;
float op2_freq = frequency * t.op2.ratio;
float op2_mod_index = (t.op2.amplitude * MOD_INDEX_COEFF);
float op2_signal =
tx_operator_process_sample(t.op2, s.gate, s.trigger, op2_freq, s.velocity, op3_signal) * op2_mod_index;
tx_operator_process_sample(t.op2, s.gate, s.trigger, op2_freq, s.velocity,
op3_signal) *
op2_mod_index;
float op1_freq = frequency * t.op1.ratio;
output = tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq, s.velocity, op2_signal) *
output = tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq,
s.velocity, op2_signal) *
t.op1.amplitude;
} else if (t.algorithm == 1) {
float fb_freq = frequency * t.op3.ratio;
float fb_mod_index = (t.feedback_amt * MOD_INDEX_COEFF);
float fb_signal = tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) * fb_mod_index;
float fb_signal =
tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) *
fb_mod_index;
float op3_freq = frequency * t.op3.ratio;
float op3_signal =
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_freq, s.velocity, fb_signal) * t.op3.amplitude;
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_freq, s.velocity,
fb_signal) *
t.op3.amplitude;
float op2_freq = frequency * t.op2.ratio;
float op2_mod_index = (t.op2.amplitude * MOD_INDEX_COEFF);
float op2_signal =
tx_operator_process_sample(t.op2, s.gate, s.trigger, op2_freq, s.velocity) * op2_mod_index;
float op2_signal = tx_operator_process_sample(t.op2, s.gate, s.trigger,
op2_freq, s.velocity) *
op2_mod_index;
float op1_freq = frequency * t.op1.ratio;
float op1_signal = tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq, s.velocity, op2_signal) *
t.op1.amplitude;
float op1_signal =
tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq, s.velocity,
op2_signal) *
t.op1.amplitude;
output = op1_signal + op3_signal;
} else if (t.algorithm == 2) {
float fb_freq = frequency * t.op3.ratio;
float fb_mod_index = (t.feedback_amt * MOD_INDEX_COEFF);
float fb_signal = tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) * fb_mod_index;
float fb_signal =
tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) *
fb_mod_index;
float op3_freq = frequency * t.op3.ratio;
float op3_signal =
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_freq, s.velocity, fb_signal) * t.op3.amplitude;
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_freq, s.velocity,
fb_signal) *
t.op3.amplitude;
float op2_freq = frequency * t.op2.ratio;
float op2_signal =
tx_operator_process_sample(t.op2, s.gate, s.trigger, op2_freq, s.velocity) * t.op2.amplitude;
float op2_signal = tx_operator_process_sample(t.op2, s.gate, s.trigger,
op2_freq, s.velocity) *
t.op2.amplitude;
float op1_freq = frequency * t.op1.ratio;
float op1_signal =
tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq, s.velocity) * t.op1.amplitude;
float op1_signal = tx_operator_process_sample(t.op1, s.gate, s.trigger,
op1_freq, s.velocity) *
t.op1.amplitude;
output = op1_signal + op2_signal + op3_signal;
} else if (t.algorithm == 3) {
float fb_freq = frequency * t.op3.ratio;
float fb_mod_index = (t.feedback_amt * MOD_INDEX_COEFF);
float fb_signal = tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) * fb_mod_index;
float fb_signal =
tx_sineosc_process_sample(t.feedback_osc, s.trigger, fb_freq) *
fb_mod_index;
float op3_freq = frequency * t.op3.ratio;
float op3_mod_index = (t.op3.amplitude * MOD_INDEX_COEFF);
float op3_signal =
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_freq, s.velocity, fb_signal) * op3_mod_index;
tx_operator_process_sample(t.op3, s.gate, s.trigger, op3_freq, s.velocity,
fb_signal) *
op3_mod_index;
float op2_freq = frequency * t.op2.ratio;
float op2_mod_index = (t.op2.amplitude * MOD_INDEX_COEFF);
float op2_signal =
tx_operator_process_sample(t.op2, s.gate, s.trigger, op2_freq, s.velocity) * op2_mod_index;
float op2_signal = tx_operator_process_sample(t.op2, s.gate, s.trigger,
op2_freq, s.velocity) *
op2_mod_index;
float op1_freq = frequency * t.op1.ratio;
output =
tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq, s.velocity, op2_signal + op3_signal) *
t.op1.amplitude;
output = tx_operator_process_sample(t.op1, s.gate, s.trigger, op1_freq,
s.velocity, op2_signal + op3_signal) *
t.op1.amplitude;
}
// reset trigger
@@ -532,19 +593,24 @@ inline void tx_synth_init(tx_synth& s, double samplerate)
for (int i = 0; i < MAX_VOICES; i++) { tx_voice_init(s.voices[i], samplerate); }
}
inline void tx_synth_process_block(tx_synth& s, float** audio, size_t num_frames, const vector<midi_event>& midi_events,
inline void tx_synth_process_block(tx_synth& s, float** audio, size_t num_frames,
const vector<midi_event>& midi_events,
const vector<audio_buffer<float>>& mods = {})
{
for (int i = 0; i < num_frames; i++) { audio[0][i] = audio[1][i] = 0.f; } // clear audio buffers
for (int i = 0; i < num_frames; i++) {
audio[0][i] = audio[1][i] = 0.f;
} // clear audio buffers
voice_allocator_process_block(s.allocator, midi_events);
for (int i = 0; i < s.allocator.active_voice_count; i++) {
tx_voice_process_block(s.voices[i], s.allocator.voices[i], audio, num_frames, mods);
tx_voice_process_block(s.voices[i], s.allocator.voices[i], audio, num_frames,
mods);
}
}
inline void tx_apply_parameter_mapping(array<tx_state, MAX_VOICES>& v, tx_parameter_mapping& m, float value)
inline void tx_apply_parameter_mapping(array<tx_state, MAX_VOICES>& v,
tx_parameter_mapping& m, float value)
{
if (m.range_min != m.range_max || m.exponent != 1.f)
value = powf(value, m.exponent) * (m.range_max - m.range_min) + m.range_min;
@@ -743,8 +809,8 @@ inline void tx_apply_parameter_mapping(array<tx_state, MAX_VOICES>& v, tx_parame
}
}
inline void tx_apply_parameter_mappings(array<tx_state, MAX_VOICES>& v, std::vector<tx_parameter_mapping>& m,
float value)
inline void tx_apply_parameter_mappings(array<tx_state, MAX_VOICES>& v,
std::vector<tx_parameter_mapping>& m, float value)
{
for (int i = 0; i < m.size(); i++) { tx_apply_parameter_mapping(v, m[i], value); }
}

40
synth/voice_allocator.h
View File

@@ -1,3 +1,26 @@
/*
* voice_allocator.h
* Copyright (c) 2025 Christopher Herb
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#pragma once
#include <array>
@@ -31,7 +54,8 @@ inline void make_note_on(midi_event& ev, int _midi_note, float _velocity, int _o
ev.offset = _offset;
}
inline void make_note_off(midi_event& ev, int _midi_note, float _velocity, int _offset = 0)
inline void make_note_off(midi_event& ev, int _midi_note, float _velocity,
int _offset = 0)
{
ev.type = midi_event_type::NOTE_OFF;
ev.midi_note = _midi_note;
@@ -80,11 +104,14 @@ inline void voice_allocator_init(voice_allocator& va)
for (size_t i = 0; i < MAX_VOICES; ++i) { va.voices[i].event_count = 0; }
}
inline void voice_allocator_process_block(voice_allocator& va, const vector<midi_event>& midi_events)
inline void voice_allocator_process_block(voice_allocator& va,
const vector<midi_event>& midi_events)
{
// reset voice events and counts
for (int i = 0; i < MAX_VOICES; i++) {
for (int j = 0; j < MAX_EVENTS_PER_VOICE; j++) { va.voices[i].events[j] = midi_event {}; }
for (int j = 0; j < MAX_EVENTS_PER_VOICE; j++) {
va.voices[i].events[j] = midi_event {};
}
va.voices[i].event_count = 0;
}
@@ -119,13 +146,16 @@ inline void voice_allocator_process_block(voice_allocator& va, const vector<midi
}
case NOTE_OFF: {
for (size_t i = 0; i < va.active_voice_count; ++i) {
if (va.voices[i].midi_note == ev.midi_note) va.voices[i].events[va.voices[i].event_count++] = ev;
if (va.voices[i].midi_note == ev.midi_note)
va.voices[i].events[va.voices[i].event_count++] = ev;
}
break;
}
case PITCH_WHEEL:
case MOD_WHEEL: {
for (size_t i = 0; i < va.active_voice_count; ++i) { va.voices[i].events[va.voices[i].event_count++] = ev; }
for (size_t i = 0; i < va.active_voice_count; ++i) {
va.voices[i].events[va.voices[i].event_count++] = ev;
}
break;
}
}