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#include "effect_note_puncher.h"
#include "dsp/db.h"
#include <math.h>
//process
bool AudioEffectNotePuncher::has_secondary_input() const {
return false;
}
void AudioEffectNotePuncher::process(const Event *p_events, int p_event_count, const AudioFrame *p_in, AudioFrame *p_out, bool p_prev_active) {
process_with_secondary(p_events, p_event_count, p_in, NULL, p_out, p_prev_active);
}
void AudioEffectNotePuncher::process_with_secondary(const Event *p_events, int p_event_count, const AudioFrame *p_in, const AudioFrame *p_secondary, AudioFrame *p_out, bool p_prev_active) {
int attack_samples = (control_ports[CONTROL_PORT_ATTACK_MS].value / 1000.0) * sampling_rate;
int decay_samples = (control_ports[CONTROL_PORT_DECAY_MS].value / 1000.0) * sampling_rate;
float amplify_db = control_ports[CONTROL_PORT_PUNCH_DB].value;
//check notes
for (int i = 0; i < p_event_count; i++) {
if (p_events[i].type == Event::TYPE_NOTE) {
//launch an envelope
for (int j = 0; j < MAX_PUNCHES; j++) {
if (!punches[j].active) {
punches[j].active = true;
punches[j].time = 0;
break;
}
}
}
}
//process envelope
float *envelope = &envelope_block[0];
for (int i = 0; i < block_size; i++) {
envelope[i] = -1.0; // if negative, this was unused (will convert to 1.0 later)
}
for (int j = 0; j < MAX_PUNCHES; j++) {
if (!punches[j].active) {
continue;
}
for (int i = 0; i < block_size; i++) {
float amp = 1.0;
if (punches[j].time < attack_samples) {
amp = float(punches[j].time) / float(attack_samples);
} else {
int time = punches[j].time - attack_samples;
if (time < decay_samples) {
amp = 1.0 - float(time) / float(decay_samples);
} else {
punches[j].active = false;
break;
}
}
amp = db2linear(amplify_db * amp);
//printf("%i att %i dec %i - %f\n", punches[j].time, attack_samples, decay_samples, amp);
envelope[i] = MAX(envelope[i], amp);
punches[j].time++;
}
}
for (int i = 0; i < block_size; i++) {
float amp = envelope[i] >= 0 ? envelope[i] : 1.0;
p_out[i] = p_in[i] * amp;
}
}
void AudioEffectNotePuncher::set_process_block_size(int p_size) {
block_size = p_size;
}
void AudioEffectNotePuncher::set_sampling_rate(int p_hz) {
if (sampling_rate != p_hz) {
sampling_rate = p_hz;
_update_buffers();
}
}
//info
String AudioEffectNotePuncher::get_name() const {
return "NotePuncher";
}
String AudioEffectNotePuncher::get_unique_id() const {
return "note_puncher";
}
String AudioEffectNotePuncher::get_provider_id() const {
return "internal";
}
int AudioEffectNotePuncher::get_control_port_count() const {
return CONTROL_PORT_MAX;
}
ControlPort *AudioEffectNotePuncher::get_control_port(int p_port) {
ERR_FAIL_INDEX_V(p_port, CONTROL_PORT_MAX, NULL);
return &control_ports[p_port];
}
void AudioEffectNotePuncher::reset() {
_update_buffers();
}
/* Load/Save */
JSON::Node AudioEffectNotePuncher::to_json() const {
JSON::Node node = JSON::object();
for (int i = 0; i < CONTROL_PORT_MAX; i++) {
node.add(control_ports[i].identifier.utf8().get_data(), control_ports[i].value);
}
return node;
}
Error AudioEffectNotePuncher::from_json(const JSON::Node &node) {
for (int i = 0; i < CONTROL_PORT_MAX; i++) {
std::string key = control_ports[i].identifier.utf8().get_data();
if (node.has(key)) {
control_ports[i].value = node.get(key).toFloat();
}
}
return OK;
}
void AudioEffectNotePuncher::_update_buffers() {
envelope_block.resize(block_size);
for (int i = 0; i < MAX_PUNCHES; i++) {
punches[i].active = false;
punches[i].time = 0;
}
}
AudioEffectNotePuncher::AudioEffectNotePuncher() {
control_ports[CONTROL_PORT_PUNCH_DB].name = "Punch Strength (db)";
control_ports[CONTROL_PORT_PUNCH_DB].identifier = "punch_strength";
control_ports[CONTROL_PORT_PUNCH_DB].min = -24;
control_ports[CONTROL_PORT_PUNCH_DB].max = 24;
control_ports[CONTROL_PORT_PUNCH_DB].step = 0.1;
control_ports[CONTROL_PORT_PUNCH_DB].value = 6;
control_ports[CONTROL_PORT_ATTACK_MS].name = "Attack (ms)";
control_ports[CONTROL_PORT_ATTACK_MS].identifier = "attack";
control_ports[CONTROL_PORT_ATTACK_MS].min = 0.1;
control_ports[CONTROL_PORT_ATTACK_MS].max = 20;
control_ports[CONTROL_PORT_ATTACK_MS].step = 0.1;
control_ports[CONTROL_PORT_ATTACK_MS].value = 5;
control_ports[CONTROL_PORT_DECAY_MS].name = "Decay (ms)";
control_ports[CONTROL_PORT_DECAY_MS].identifier = "decay";
control_ports[CONTROL_PORT_DECAY_MS].min = 5;
control_ports[CONTROL_PORT_DECAY_MS].max = 200;
control_ports[CONTROL_PORT_DECAY_MS].step = 0.1;
control_ports[CONTROL_PORT_DECAY_MS].value = 50;
block_size = 128;
sampling_rate = 0;
set_sampling_rate(44100);
set_process_block_size(128);
_update_buffers();
}
AudioEffectNotePuncher::~AudioEffectNotePuncher() {
}
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