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Code Issues Releases Wiki Activity

Added Portamento function from https://github.com/asb2m10/dexed/pull/183

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pull/17/head
Holger Wirtz 5 years ago
parent 99db6afa52
commit fc3b061481
11 changed files with 397 additions and 70 deletions
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  1. BIN
      .MicroDexed.ino.swp
  2. 12
      MicroDexed.ino
  3. 189
      UI.hpp
  4. 15
      config.h
  5. 3
      controllers.h
  6. 29
      dexed.cpp
  7. 10
      dexed.h
  8. 37
      dx7note.cpp
  9. 33
      dx7note.h
  10. 35
      porta.cpp
  11. 28
      porta.h

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.MicroDexed.ino.swp
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12
MicroDexed.ino
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@ -610,6 +610,10 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
MicroDexed[instance_id]->controllers.foot_cc = inValue;
MicroDexed[instance_id]->controllers.refresh();
break;
case 5: // Portamento time
configuration.dexed[instance_id].portamento_time = inValue;
MicroDexed[instance_id]->setPortamentoMode(configuration.dexed[instance_id].portamento_mode, configuration.dexed[instance_id].portamento_glissando, configuration.dexed[instance_id].portamento_time);
break;
case 7: // Volume
#ifdef DEBUG
Serial.println(F("VOLUME CC"));
@ -644,6 +648,9 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
}
}
break;
case 65:
MicroDexed[instance_id]->setPortamentoMode(configuration.dexed[instance_id].portamento_mode, configuration.dexed[instance_id].portamento_glissando, configuration.dexed[instance_id].portamento_time);
break;
case 103: // CC 103: filter resonance
configuration.dexed[instance_id].filter_resonance = map(inValue, 0, 0x7f, FILTER_RESONANCE_MIN, FILTER_RESONANCE_MAX);
MicroDexed[instance_id]->fx.Reso = mapfloat(configuration.dexed[instance_id].filter_resonance, FILTER_RESONANCE_MIN, FILTER_RESONANCE_MAX, 1.0, 0.0);
@ -832,6 +839,7 @@ void handleSystemExclusive(byte * sysex, uint len)
MicroDexed[instance_id]->controllers.at.setRange(MicroDexed[instance_id]->data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_AT_RANGE]);
MicroDexed[instance_id]->controllers.at.setTarget(MicroDexed[instance_id]->data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_AT_ASSIGN]);
MicroDexed[instance_id]->controllers.masterTune = (MicroDexed[instance_id]->data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_MASTER_TUNE] * 0x4000 << 11) * (1.0 / 12);
MicroDexed[instance_id]->setPortamentoMode(MicroDexed[instance_id]->data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_PORTAMENTO_MODE], MicroDexed[instance_id]->data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_PORTAMENTO_GLISSANDO], MicroDexed[instance_id]->data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_PORTAMENTO_TIME]);
MicroDexed[instance_id]->controllers.refresh();
data_index = DEXED_GLOBAL_PARAMETER_OFFSET - 63 + sysex[4];
}
@ -1382,7 +1390,9 @@ void show_configuration(void)
Serial.print(F(" BreathCtrl Range ")); Serial.println(configuration.dexed[instance_id].bc_range, DEC);
Serial.print(F(" Breathctrl Assign ")); Serial.println(configuration.dexed[instance_id].bc_assign, DEC);
Serial.print(F(" Aftertouch Range ")); Serial.println(configuration.dexed[instance_id].at_range, DEC);
Serial.print(F(" Aftertouch Assign ")); Serial.println(configuration.dexed[instance_id].at_assign, DEC);
Serial.print(F(" Portamento Mode ")); Serial.println(configuration.dexed[instance_id].portamento_mode, DEC);
Serial.print(F(" Portamento Glissando ")); Serial.println(configuration.dexed[instance_id].portamento_glissando, DEC);
Serial.print(F(" Portamento TIme ")); Serial.println(configuration.dexed[instance_id].portamento_time, DEC);
Serial.print(F(" OP Enabled ")); Serial.println(configuration.dexed[instance_id].op_enabled, DEC);
Serial.flush();
}

189
UI.hpp
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@ -158,6 +158,9 @@ void UI_func_bc_range(uint8_t param);
void UI_func_bc_assign(uint8_t param);
void UI_func_at_range(uint8_t param);
void UI_func_at_assign(uint8_t param);
void UI_func_portamento_mode(uint8_t param);
void UI_func_portamento_glissando(uint8_t param);
void UI_func_portamento_time(uint8_t param);
void UI_func_OP1(uint8_t param);
void UI_func_OP2(uint8_t param);
void UI_func_OP3(uint8_t param);
@ -211,9 +214,9 @@ LCDML_add(28, LCDML_0_1_1, 17, "Aftertouch 1", NULL);
LCDML_add(29, LCDML_0_1_1_17, 1, "AT Range 1", UI_func_at_range);
LCDML_add(30, LCDML_0_1_1_17, 2, "AT Assign 1", UI_func_at_assign);
LCDML_add(31, LCDML_0_1_1, 18, "Portamento 1", NULL);
LCDML_add(32, LCDML_0_1_1_18, 1, "Port. Mode 1", UI_function_not_enabled);
LCDML_add(33, LCDML_0_1_1_18, 2, "Port. Gliss 1", UI_function_not_enabled);
LCDML_add(34, LCDML_0_1_1_18, 3, "Port. Time 1", UI_function_not_enabled);
LCDML_add(32, LCDML_0_1_1_18, 1, "Port. Mode 1", UI_func_portamento_mode);
LCDML_add(33, LCDML_0_1_1_18, 2, "Port. Gliss 1", UI_func_portamento_glissando);
LCDML_add(34, LCDML_0_1_1_18, 3, "Port. Time 1", UI_func_portamento_time);
LCDML_add(35, LCDML_0_1_1, 19, "Operator 1", NULL);
LCDML_add(36, LCDML_0_1_1_19, 1, "OP1 1", UI_func_OP1);
LCDML_add(37, LCDML_0_1_1_19, 2, "OP2 1", UI_func_OP2);
@ -252,9 +255,9 @@ LCDML_add(69, LCDML_0_1_2, 17, "Aftertouch 2", NULL);
LCDML_add(70, LCDML_0_1_2_17, 1, "AT Range 2", UI_func_at_range);
LCDML_add(71, LCDML_0_1_2_17, 2, "AT Assign 2", UI_func_at_assign);
LCDML_add(72, LCDML_0_1_2, 18, "Portamento 2", NULL);
LCDML_add(73, LCDML_0_1_2_18, 1, "Port. Mode 2", UI_function_not_enabled);
LCDML_add(74, LCDML_0_1_2_18, 2, "Port. Gliss 2", UI_function_not_enabled);
LCDML_add(75, LCDML_0_1_2_18, 3, "Port. Time 2", UI_function_not_enabled);
LCDML_add(73, LCDML_0_1_2_18, 1, "Port. Mode 2", UI_func_portamento_mode);
LCDML_add(74, LCDML_0_1_2_18, 2, "Port. Gliss 2", UI_func_portamento_glissando);
LCDML_add(75, LCDML_0_1_2_18, 3, "Port. Time 2", UI_func_portamento_time);
LCDML_add(76, LCDML_0_1_2, 19, "Operator 2", NULL);
LCDML_add(77, LCDML_0_1_2_19, 1, "OP1 2", UI_func_OP1);
LCDML_add(78, LCDML_0_1_2_19, 2, "OP2 2", UI_func_OP2);
@ -311,9 +314,9 @@ LCDML_add(27, LCDML_0_1, 17, "Aftertouch", NULL);
LCDML_add(28, LCDML_0_1_17, 1, "AT Range", UI_func_at_range);
LCDML_add(29, LCDML_0_1_17, 2, "AT Assign", UI_func_at_assign);
LCDML_add(30, LCDML_0_1, 18, "Portamento", NULL);
LCDML_add(31, LCDML_0_1_18, 1, "Port. Mode", UI_function_not_implemented);
LCDML_add(32, LCDML_0_1_18, 2, "Port. Gliss", UI_function_not_implemented);
LCDML_add(33, LCDML_0_1_18, 3, "Port. Time", UI_function_not_implemented);
LCDML_add(31, LCDML_0_1_18, 1, "Port. Mode", UI_func_portamento_mode);
LCDML_add(32, LCDML_0_1_18, 2, "Port. Gliss", UI_func_portamento_glissando);
LCDML_add(33, LCDML_0_1_18, 3, "Port. Time", UI_func_portamento_time);
LCDML_add(34, LCDML_0_1, 19, "Operator", NULL);
LCDML_add(35, LCDML_0_1_19, 1, "OP1", UI_func_OP1);
LCDML_add(36, LCDML_0_1_19, 2, "OP2", UI_func_OP2);
@ -2663,7 +2666,175 @@ void UI_func_at_assign(uint8_t param)
lcd.print(F("[PTCH AMP EG-BS]"));
break;
}
}
if (LCDML.FUNC_close()) // ****** STABLE END *********
{
// you can here reset some global vars or do nothing
eeprom_write();
}
}
void UI_func_portamento_mode(uint8_t param)
{
uint8_t instance_id = 0;
if (LCDML.FUNC_getID() > MENU_ID_OF_INSTANCE_2)
instance_id = 1;
if (LCDML.FUNC_setup()) // ****** SETUP *********
{
// setup function
lcd.setCursor(0, 0);
lcd.print(F("Portamento Mode"));
}
if (LCDML.FUNC_loop()) // ****** LOOP *********
{
if (LCDML.BT_checkEnter())
{
LCDML.FUNC_goBackToMenu();
}
else if (LCDML.BT_checkDown() || LCDML.BT_checkUp())
{
if (LCDML.BT_checkDown())
{
if (configuration.dexed[instance_id].portamento_mode < PORTMAMENTO_MODE_MAX)
{
configuration.dexed[instance_id].portamento_mode++;
}
}
else if (LCDML.BT_checkUp())
{
if (configuration.dexed[instance_id].portamento_mode > PORTMAMENTO_MODE_MIN)
{
configuration.dexed[instance_id].portamento_mode--;
}
}
MicroDexed[instance_id]->setPortamentoMode(configuration.dexed[instance_id].portamento_mode, configuration.dexed[instance_id].portamento_glissando, configuration.dexed[instance_id].portamento_time);
}
lcd.setCursor(0, 1);
switch (configuration.dexed[instance_id].portamento_mode)
{
case 0:
lcd.print(F("[RETAIN ]"));
break;
case 1:
lcd.print(F("[FOLLOW ]"));
break;
}
}
if (LCDML.FUNC_close()) // ****** STABLE END *********
{
// you can here reset some global vars or do nothing
eeprom_write();
}
}
void UI_func_portamento_glissando(uint8_t param)
{
uint8_t instance_id = 0;
if (LCDML.FUNC_getID() > MENU_ID_OF_INSTANCE_2)
instance_id = 1;
if (LCDML.FUNC_setup()) // ****** SETUP *********
{
// setup function
lcd.setCursor(0, 0);
lcd.print(F("Portam. Gliss."));
}
if (LCDML.FUNC_loop()) // ****** LOOP *********
{
if (LCDML.BT_checkEnter())
{
LCDML.FUNC_goBackToMenu();
}
else if (LCDML.BT_checkDown() || LCDML.BT_checkUp())
{
if (LCDML.BT_checkDown())
{
if (configuration.dexed[instance_id].portamento_glissando < PORTMAMENTO_GLISSANDO_MAX)
{
configuration.dexed[instance_id].portamento_glissando++;
}
}
else if (LCDML.BT_checkUp())
{
if (configuration.dexed[instance_id].portamento_glissando > PORTMAMENTO_GLISSANDO_MIN)
{
configuration.dexed[instance_id].portamento_glissando--;
}
}
MicroDexed[instance_id]->setPortamentoMode(configuration.dexed[instance_id].portamento_mode, configuration.dexed[instance_id].portamento_glissando, configuration.dexed[instance_id].portamento_time);
}
lcd.setCursor(0, 1);
switch (configuration.dexed[instance_id].portamento_glissando)
{
case 0:
lcd.print(F("[OFF ]"));
break;
case 1:
lcd.print(F("[ON ]"));
break;
}
}
if (LCDML.FUNC_close()) // ****** STABLE END *********
{
// you can here reset some global vars or do nothing
eeprom_write();
}
}
void UI_func_portamento_time(uint8_t param)
{
uint8_t instance_id = 0;
if (LCDML.FUNC_getID() > MENU_ID_OF_INSTANCE_2)
instance_id = 1;
if (LCDML.FUNC_setup()) // ****** SETUP *********
{
// setup function
lcd.setCursor(0, 0);
lcd.print(F("Portam. Time"));
}
if (LCDML.FUNC_loop()) // ****** LOOP *********
{
if (LCDML.BT_checkEnter())
{
LCDML.FUNC_goBackToMenu();
}
else if (LCDML.BT_checkDown() || LCDML.BT_checkUp())
{
if (LCDML.BT_checkDown())
{
if (configuration.dexed[instance_id].portamento_time < PORTMAMENTO_TIME_MAX)
{
configuration.dexed[instance_id].portamento_time++;
}
}
else if (LCDML.BT_checkUp())
{
if (configuration.dexed[instance_id].portamento_time > PORTMAMENTO_TIME_MIN)
{
configuration.dexed[instance_id].portamento_time--;
}
}
MicroDexed[instance_id]->setPortamentoMode(configuration.dexed[instance_id].portamento_mode, configuration.dexed[instance_id].portamento_glissando, configuration.dexed[instance_id].portamento_time);
}
lcd.setCursor(0, 1);
lcd_display_int(configuration.dexed[instance_id].portamento_time, 2, false, true, false);
}
if (LCDML.FUNC_close()) // ****** STABLE END *********

15
config.h
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@ -395,6 +395,18 @@ enum { DEXED, REVERB, DELAY, CHORUS };
#define AT_ASSIGN_MAX 7
#define AT_ASSIGN_DEFAULT 0 // Bitmapped: 0: Pitch, 1: Amp, 2: Bias
#define PORTMAMENTO_MODE_MIN 0
#define PORTMAMENTO_MODE_MAX 1
#define PORTMAMENTO_MODE_DEFAULT 0
#define PORTMAMENTO_GLISSANDO_MIN 0
#define PORTMAMENTO_GLISSANDO_MAX 1
#define PORTMAMENTO_GLISSANDO_DEFAULT 0
#define PORTMAMENTO_TIME_MIN 0
#define PORTMAMENTO_TIME_MAX 99
#define PORTMAMENTO_TIME_DEFAULT 0
#define OP_ENABLED_MIN 0
#define OP_ENABLED_MAX 0x3f
#define OP_ENABLED_DEFAULT OP_ENABLED_MAX
@ -449,6 +461,9 @@ typedef struct {
uint8_t bc_assign;
uint8_t at_range;
uint8_t at_assign;
uint8_t portamento_mode;
uint8_t portamento_glissando;
uint8_t portamento_time;
uint8_t op_enabled;
} dexed_t;

3
controllers.h
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@ -21,6 +21,7 @@
#include "synth.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
// State of MIDI controllers
const int kControllerPitch = 0;
@ -79,6 +80,8 @@ class Controllers {
uint8_t breath_cc;
uint8_t foot_cc;
uint8_t modwheel_cc;
bool portamento_enable_cc;
int portamento_cc;
int masterTune;

29
dexed.cpp
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@ -36,6 +36,7 @@
#include "PluginFx.h"
#include <unistd.h>
#include <limits.h>
#include "porta.h"
#ifdef USE_TEENSY_DSP
#include <Audio.h>
#endif
@ -52,6 +53,7 @@ Dexed::Dexed(int rate)
Lfo::init(rate);
PitchEnv::init(rate);
Env::init_sr(rate);
Porta::init_sr(rate);
fx.init(rate);
engineMkI = new EngineMkI;
@ -71,6 +73,7 @@ Dexed::Dexed(int rate)
controllers.masterTune = 0;
controllers.opSwitch = 0x3f; // enable all operators
//controllers.opSwitch=0x00;
lastKeyDown = -1;
lfo.reset(data + 137);
@ -188,6 +191,13 @@ void Dexed::keydown(uint8_t pitch, uint8_t velo) {
pitch += data[144] - TRANSPOSE_FIX;
int previousKeyDown = lastKeyDown;
lastKeyDown = pitch;
int porta = -1;
if ( controllers.portamento_enable_cc && previousKeyDown >= 0 )
porta = controllers.portamento_cc;
uint8_t note = currentNote;
uint8_t keydown_counter = 0;
@ -198,7 +208,7 @@ void Dexed::keydown(uint8_t pitch, uint8_t velo) {
voices[note].velocity = velo;
voices[note].sustained = sustain;
voices[note].keydown = true;
voices[note].dx7_note->init(data, (int)pitch, (int)velo);
voices[note].dx7_note->init(data, pitch, velo, previousKeyDown, porta);
if ( data[136] )
voices[note].dx7_note->oscSync();
break;
@ -355,6 +365,8 @@ void Dexed::resetControllers(void)
controllers.foot_cc = 0;
controllers.breath_cc = 0;
controllers.aftertouch_cc = 0;
controllers.portamento_enable_cc = false;
controllers.portamento_cc = 0;
controllers.refresh();
}
@ -718,3 +730,18 @@ void Dexed::setATController(uint8_t at_range, uint8_t at_assign)
controllers.refresh();
}
void Dexed::setPortamentoMode(uint8_t portamento_mode, uint8_t portamento_glissando, uint8_t portamento_time)
{
data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_PORTAMENTO_MODE] = portamento_mode;
data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_PORTAMENTO_GLISSANDO] = portamento_glissando;
data[DEXED_GLOBAL_PARAMETER_OFFSET + DEXED_PORTAMENTO_TIME] = portamento_time;
controllers.portamento_cc = portamento_time;
if (portamento_time > 0)
controllers.portamento_enable_cc = true;
else
controllers.portamento_enable_cc = false;
controllers.refresh();
}

10
dexed.h
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@ -128,7 +128,9 @@ enum DexedGlobalParameters {
DEXED_OP5_ENABLE, // 15
DEXED_OP6_ENABLE, // 16
DEXED_MAX_NOTES, // 17
DEXED_VOICE_VOLUME // 18
DEXED_PORTAMENTO_MODE, // 18
DEXED_PORTAMENTO_GLISSANDO, // 19
DEXED_PORTAMENTO_TIME, // 20
};
// GLOBALS
@ -168,12 +170,13 @@ class Dexed
void setFCController(uint8_t fc_range, uint8_t fc_assign);
void setBCController(uint8_t bc_range, uint8_t bc_assign);
void setATController(uint8_t at_range, uint8_t pb_assign);
void setPortamentoMode(uint8_t portamento_mode, uint8_t portamento_glissando, uint8_t portamento_time);
ProcessorVoice voices[MAX_NOTES];
Controllers controllers;
PluginFx fx;
uint8_t data[173] = {
uint8_t data[176] = {
95, 29, 20, 50, 99, 95, 00, 00, 41, 00, 19, 00, 00, 03, 00, 06, 79, 00, 01, 00, 14, // OP6 eg_rate_1-4, level_1-4, kbd_lev_scl_brk_pt, kbd_lev_scl_lft_depth, kbd_lev_scl_rht_depth, kbd_lev_scl_lft_curve, kbd_lev_scl_rht_curve, kbd_rate_scaling, amp_mod_sensitivity, key_vel_sensitivity, operator_output_level, osc_mode, osc_freq_coarse, osc_freq_fine, osc_detune
95, 20, 20, 50, 99, 95, 00, 00, 00, 00, 00, 00, 00, 03, 00, 00, 99, 00, 01, 00, 00, // OP5
95, 29, 20, 50, 99, 95, 00, 00, 00, 00, 00, 00, 00, 03, 00, 06, 89, 00, 01, 00, 07, // OP4
@ -188,10 +191,13 @@ class Dexed
01, 00, 99, 00, 99, 00, 99, 00, 99, 00, // pitch_bend_range, pitch_bend_step, mod_wheel_range, mod_wheel_assign, foot_ctrl_range, foot_ctrl_assign, breath_ctrl_range, breath_ctrl_assign, aftertouch_range, aftertouch_assign
00, // master tune
01, 01, 01, 01, 01, 01, // OP1-6 enable
00, 00, 00, // portamento_mode, portamento_glissando, portamento_time
MAX_NOTES // number of voices
}; // FM-Piano
uint32_t overload = 0;
int lastKeyDown;
protected:
static const uint8_t MAX_ACTIVE_NOTES = MAX_NOTES;
uint8_t max_notes = MAX_ACTIVE_NOTES;

37
dx7note.cpp
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@ -19,6 +19,7 @@
#include <stdlib.h>
#include "synth.h"
#include "freqlut.h"
#include "porta.h"
#include "exp2.h"
#include "controllers.h"
#include "dx7note.h"
@ -147,7 +148,7 @@ Dx7Note::Dx7Note() {
}
//void Dx7Note::init(const uint8_t patch[156], int midinote, int velocity) {
void Dx7Note::init(const uint8_t patch[173], int midinote, int velocity) {
void Dx7Note::init(const uint8_t patch[173], int midinote, int velocity, int srcnote, int porta) {
int rates[4];
int levels[4];
for (int op = 0; op < 6; op++) {
@ -176,6 +177,9 @@ void Dx7Note::init(const uint8_t patch[173], int midinote, int velocity) {
opMode[op] = mode;
basepitch_[op] = freq;
ampmodsens_[op] = ampmodsenstab[patch[off + 14] & 3];
if (porta >= 0)
porta_curpitch_[op] = osc_freq(srcnote, mode, coarse, fine, detune);
}
for (int i = 0; i < 4; i++) {
rates[i] = patch[126 + i];
@ -188,6 +192,7 @@ void Dx7Note::init(const uint8_t patch[173], int midinote, int velocity) {
pitchmoddepth_ = (patch[139] * 165) >> 6;
pitchmodsens_ = pitchmodsenstab[patch[143] & 7];
ampmoddepth_ = (patch[140] * 165) >> 6;
porta_rateindex_ = (porta < 128) ? porta : 127;
}
void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Controllers *ctrls) {
@ -236,10 +241,15 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
} else {
//int32_t gain = pow(2, 10 + level * (1.0 / (1 << 24)));
int32_t basepitch = basepitch_[op];
if ( opMode[op] )
params_[op].freq = Freqlut::lookup(basepitch_[op] + pitch_base);
else
params_[op].freq = Freqlut::lookup(basepitch_[op] + pitch_mod);
params_[op].freq = Freqlut::lookup(basepitch + pitch_base);
else {
if ( porta_rateindex_ >= 0 )
basepitch = porta_curpitch_[op];
params_[op].freq = Freqlut::lookup(basepitch + pitch_mod);
}
int32_t level = env_[op].getsample();
if (ampmodsens_[op] != 0) {
@ -254,6 +264,25 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
params_[op].level_in = level;
}
}
// ==== PORTAMENTO ====
int porta = porta_rateindex_;
if ( porta >= 0 ) {
int32_t rate = Porta::rates[porta];
for (int op = 0; op < 6; op++) {
int32_t cur = porta_curpitch_[op];
int32_t dst = basepitch_[op];
bool going_up = cur < dst;
int32_t newpitch = cur + (going_up ? +rate : -rate);
if ( going_up ? (cur > dst) : (cur < dst) )
newpitch = dst;
porta_curpitch_[op] = newpitch;
}
}
ctrls->core->render(buf, params_, algorithm_, fb_buf_, fb_shift_);
}

33
dx7note.h
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@ -1,18 +1,18 @@
/*
* Copyright 2016-2017 Pascal Gauthier.
* Copyright 2012 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
Copyright 2016-2017 Pascal Gauthier.
Copyright 2012 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef SYNTH_DX7NOTE_H_
@ -38,7 +38,7 @@ struct VoiceStatus {
class Dx7Note {
public:
Dx7Note();
void init(const uint8_t patch[156], int midinote, int velocity);
void init(const uint8_t patch[156], int midinote, int velocity, int srcnote, int porta);
// Note: this _adds_ to the buffer. Interesting question whether it's
// worth it...
@ -73,6 +73,9 @@ private:
int algorithm_;
int pitchmoddepth_;
int pitchmodsens_;
int porta_rateindex_;
int32_t porta_curpitch_[6];
};
#endif // SYNTH_DX7NOTE_H_

35
porta.cpp
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@ -0,0 +1,35 @@
/*
Copyright 2019 Jean Pierre Cimalando.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include <math.h>
#include "porta.h"
#include "synth.h"
void Porta::init_sr(double sampleRate)
{
// compute portamento for CC 7-bit range
for (unsigned int i = 0; i < 128; ++i) {
// number of semitones travelled
double sps = 350.0 * pow(2.0, -0.062 * i); // per second
double spf = sps / sampleRate; // per frame
double spp = spf * _N_; // per period
const int step = (1 << 24) / 12;
rates[i] = (int32_t)(0.5f + step * spp); // to pitch units
}
}
int32_t Porta::rates[128];

28
porta.h
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@ -0,0 +1,28 @@
/*
Copyright 2019 Jean Pierre Cimalando.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef SYNTH_PORTA_H_
#define SYNTH_PORTA_H_
#include <stdint.h>
struct Porta {
public:
static void init_sr(double sampleRate);
static int32_t rates[128];
};
#endif // SYNTH_PORTA_H_
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