Add step sequencer feature (#9703)

* sequencer: create togglable feature

* sequencer: add support for steps

* sequencer: add support for tempo and resolutions

* sequencer: schedule a message print at the right frequency

* sequencer: send a hardcoded note

* sequencer: add support for 8 tracks

* sequencer: play several notes simultaneously

* sequencer: only play the active tracks for a given step

* sequencer: change the default behavior of the track toggler

* sequencer: make number of tracks and track notes customizable

* sequencer: move the keycodes down

Not adding them at the end of the list apparently risks breaking
compatibility with VIA.

Source: https://github.com/qmk/qmk_firmware/pull/9703#discussion_r459202733

* sequencer: add unit tests

* sequencer: add unit test for matrix_scan_sequencer

* sequencer: expose internal state for better unit-testability

* sequencer: add unit tests for matrix_scan_sequencer
This commit is contained in:
Rodolphe Belouin 2020-11-08 04:35:14 +01:00 committed by GitHub
parent 4cdd3005d6
commit 38527f9a3b
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18 changed files with 1280 additions and 0 deletions

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@ -49,6 +49,7 @@ endif
include common_features.mk
include $(TMK_PATH)/common.mk
include $(QUANTUM_PATH)/sequencer/tests/rules.mk
include $(QUANTUM_PATH)/serial_link/tests/rules.mk
ifneq ($(filter $(FULL_TESTS),$(TEST)),)
include build_full_test.mk

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@ -21,4 +21,5 @@ COMMON_VPATH += $(QUANTUM_PATH)/keymap_extras
COMMON_VPATH += $(QUANTUM_PATH)/audio
COMMON_VPATH += $(QUANTUM_PATH)/process_keycode
COMMON_VPATH += $(QUANTUM_PATH)/api
COMMON_VPATH += $(QUANTUM_PATH)/sequencer
COMMON_VPATH += $(DRIVER_PATH)

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@ -38,6 +38,13 @@ ifeq ($(strip $(AUDIO_ENABLE)), yes)
SRC += $(QUANTUM_DIR)/audio/luts.c
endif
ifeq ($(strip $(SEQUENCER_ENABLE)), yes)
OPT_DEFS += -DSEQUENCER_ENABLE
MUSIC_ENABLE = yes
SRC += $(QUANTUM_DIR)/sequencer/sequencer.c
SRC += $(QUANTUM_DIR)/process_keycode/process_sequencer.c
endif
ifeq ($(strip $(MIDI_ENABLE)), yes)
OPT_DEFS += -DMIDI_ENABLE
MUSIC_ENABLE = yes

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@ -80,6 +80,7 @@
* [One Shot Keys](one_shot_keys.md)
* [Pointing Device](feature_pointing_device.md)
* [Raw HID](feature_rawhid.md)
* [Sequencer](feature_sequencer.md)
* [Swap Hands](feature_swap_hands.md)
* [Tap Dance](feature_tap_dance.md)
* [Tap-Hold Configuration](tap_hold.md)

88
docs/feature_sequencer.md Normal file
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@ -0,0 +1,88 @@
# Sequencer
Since QMK has experimental support for MIDI, you can now turn your keyboard into a [step sequencer](https://en.wikipedia.org/wiki/Music_sequencer#Step_sequencers)!
!> **IMPORTANT:** This feature is highly experimental, it has only been tested on a Planck EZ so far. Also, the scope will be limited to support the drum machine use-case to start with.
## Enable the step sequencer
Add the following line to your `rules.mk`:
```make
SEQUENCER_ENABLE = yes
```
By default the sequencer has 16 steps, but you can override this setting in your `config.h`:
```c
#define SEQUENCER_STEPS 32
```
## Tracks
You can program up to 8 independent tracks with the step sequencer. Select the tracks you want to edit, enable or disable some steps, and start the sequence!
## Resolutions
While the tempo defines the absolute speed at which the sequencer goes through the steps, the resolution defines the granularity of these steps (from coarser to finer).
|Resolution |Description |
|---------- |----------- |
|`SQ_RES_2` |Every other beat |
|`SQ_RES_2T` |Every 1.5 beats |
|`SQ_RES_4` |Every beat |
|`SQ_RES_4T` |Three times per 2 beats|
|`SQ_RES_8` |Twice per beat |
|`SQ_RES_8T` |Three times per beat |
|`SQ_RES_16` |Four times per beat |
|`SQ_RES_16T` |Six times per beat |
|`SQ_RES_32` |Eight times per beat |
## Keycodes
|Keycode |Description |
|------- |----------- |
|`SQ_ON` |Start the step sequencer |
|`SQ_OFF` |Stop the step sequencer |
|`SQ_TOG` |Toggle the step sequencer playback |
|`SQ_SALL`|Enable all the steps |
|`SQ_SCLR`|Disable all the steps |
|`SQ_S(n)`|Toggle the step `n` |
|`SQ_TMPD`|Decrease the tempo |
|`SQ_TMPU`|Increase the tempo |
|`SQ_R(n)`|Set the resolution to n |
|`SQ_RESD`|Change to the slower resolution |
|`SQ_RESU`|Change to the faster resolution |
|`SQ_T(n)`|Set `n` as the only active track or deactivate all |
## Functions
|Function |Description |
|-------- |----------- |
|`bool is_sequencer_on(void);` |Return whether the sequencer is playing |
|`void sequencer_toggle(void);` |Toggle the step sequencer playback |
|`void sequencer_on(void);` |Start the step sequencer |
|`void sequencer_off(void);` |Stop the step sequencer |
|`bool is_sequencer_step_on(uint8_t step);` |Return whether the step is currently enabled |
|`void sequencer_set_step(uint8_t step, bool value);` |Enable or disable the step |
|`void sequencer_set_step_on();` |Enable the step |
|`void sequencer_set_step_off();` |Disable the step |
|`void sequencer_toggle_step(uint8_t step);` |Toggle the step |
|`void sequencer_set_all_steps(bool value);` |Enable or disable all the steps |
|`void sequencer_set_all_steps_on();` |Enable all the steps |
|`void sequencer_set_all_steps_off();` |Disable all the steps |
|`uint8_t sequencer_get_tempo(void);` |Return the current tempo |
|`void sequencer_set_tempo(uint8_t tempo);` |Set the tempo to `tempo` (between 1 and 255) |
|`void sequencer_increase_tempo(void);` |Increase the tempo |
|`void sequencer_decrease_tempo(void);` |Decrease the tempo |
|`sequencer_resolution_t sequencer_get_resolution(void);` |Return the current resolution |
|`void sequencer_set_resolution(sequencer_resolution_t resolution);` |Set the resolution to `resolution` |
|`void sequencer_increase_resolution(void);` |Change to the faster resolution |
|`void sequencer_decrease_resolution(void);` |Change to the slower resolution |
|`bool is_sequencer_track_active(uint8_t track);` |Return whether the track is active |
|`void sequencer_set_track_activation(uint8_t track, bool value);` |Activate or deactivate the `track` |
|`void sequencer_toggle_track_activation(uint8_t track);` |Toggle the `track` |
|`void sequencer_activate_track(uint8_t track);` |Activate the `track` |
|`void sequencer_deactivate_track(uint8_t track);` |Deactivate the `track` |
|`void sequencer_toggle_single_active_track(uint8_t track);` |Set `track` as the only active track or deactivate all |

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@ -0,0 +1,62 @@
/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "process_sequencer.h"
bool process_sequencer(uint16_t keycode, keyrecord_t *record) {
if (record->event.pressed) {
switch (keycode) {
case SQ_ON:
sequencer_on();
return false;
case SQ_OFF:
sequencer_off();
return false;
case SQ_TOG:
sequencer_toggle();
return false;
case SQ_TMPD:
sequencer_decrease_tempo();
return false;
case SQ_TMPU:
sequencer_increase_tempo();
return false;
case SEQUENCER_RESOLUTION_MIN ... SEQUENCER_RESOLUTION_MAX:
sequencer_set_resolution(keycode - SEQUENCER_RESOLUTION_MIN);
return false;
case SQ_RESD:
sequencer_decrease_resolution();
return false;
case SQ_RESU:
sequencer_increase_resolution();
return false;
case SQ_SALL:
sequencer_set_all_steps_on();
return false;
case SQ_SCLR:
sequencer_set_all_steps_off();
return false;
case SEQUENCER_STEP_MIN ... SEQUENCER_STEP_MAX:
sequencer_toggle_step(keycode - SEQUENCER_STEP_MIN);
return false;
case SEQUENCER_TRACK_MIN ... SEQUENCER_TRACK_MAX:
sequencer_toggle_single_active_track(keycode - SEQUENCER_TRACK_MIN);
return false;
}
}
return true;
}

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@ -0,0 +1,21 @@
/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "quantum.h"
bool process_sequencer(uint16_t keycode, keyrecord_t *record);

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@ -229,6 +229,9 @@ bool process_record_quantum(keyrecord_t *record) {
process_record_via(keycode, record) &&
#endif
process_record_kb(keycode, record) &&
#if defined(SEQUENCER_ENABLE)
process_sequencer(keycode, record) &&
#endif
#if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
process_midi(keycode, record) &&
#endif
@ -633,6 +636,10 @@ void matrix_scan_quantum() {
matrix_scan_music();
#endif
#ifdef SEQUENCER_ENABLE
matrix_scan_sequencer();
#endif
#ifdef TAP_DANCE_ENABLE
matrix_scan_tap_dance();
#endif

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@ -68,6 +68,11 @@ extern layer_state_t default_layer_state;
extern layer_state_t layer_state;
#endif
#if defined(SEQUENCER_ENABLE)
# include "sequencer.h"
# include "process_sequencer.h"
#endif
#if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
# include "process_midi.h"
#endif

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@ -16,6 +16,10 @@
#ifndef QUANTUM_KEYCODES_H
#define QUANTUM_KEYCODES_H
#if defined(SEQUENCER_ENABLE)
# include "sequencer.h"
#endif
#ifndef MIDI_ENABLE_STRICT
# define MIDI_ENABLE_STRICT 0
#endif
@ -550,6 +554,37 @@ enum quantum_keycodes {
JS_BUTTON31,
JS_BUTTON_MAX = JS_BUTTON31,
#if defined(SEQUENCER_ENABLE)
SQ_ON,
SQ_OFF,
SQ_TOG,
SQ_TMPD, // Decrease tempo
SQ_TMPU, // Increase tempo
SEQUENCER_RESOLUTION_MIN,
SEQUENCER_RESOLUTION_MAX = SEQUENCER_RESOLUTION_MIN + SEQUENCER_RESOLUTIONS,
SQ_RESD, // Decrease resolution
SQ_RESU, // Increase resolution
SQ_SALL, // All steps on
SQ_SCLR, // All steps off
SEQUENCER_STEP_MIN,
SEQUENCER_STEP_MAX = SEQUENCER_STEP_MIN + SEQUENCER_STEPS,
SEQUENCER_TRACK_MIN,
SEQUENCER_TRACK_MAX = SEQUENCER_TRACK_MIN + SEQUENCER_TRACKS,
/**
* Helpers to assign a keycode to a step, a resolution, or a track.
* Falls back to NOOP if n is out of range.
*/
# define SQ_S(n) (n < SEQUENCER_STEPS ? SEQUENCER_STEP_MIN + n : XXXXXXX)
# define SQ_R(n) (n < SEQUENCER_RESOLUTIONS ? SEQUENCER_RESOLUTION_MIN + n : XXXXXXX)
# define SQ_T(n) (n < SEQUENCER_TRACKS ? SEQUENCER_TRACK_MIN + n : XXXXXXX)
#endif
// always leave at the end
SAFE_RANGE
};

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@ -0,0 +1,275 @@
/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "sequencer.h"
#ifdef MIDI_ENABLE
# include "process_midi.h"
#endif
#ifdef MIDI_MOCKED
# include "tests/midi_mock.h"
#endif
sequencer_config_t sequencer_config = {
false, // enabled
{false}, // steps
{0}, // track notes
60, // tempo
SQ_RES_4, // resolution
};
sequencer_state_t sequencer_internal_state = {0, 0, 0, 0, SEQUENCER_PHASE_ATTACK};
bool is_sequencer_on(void) { return sequencer_config.enabled; }
void sequencer_on(void) {
dprintln("sequencer on");
sequencer_config.enabled = true;
sequencer_internal_state.current_track = 0;
sequencer_internal_state.current_step = 0;
sequencer_internal_state.timer = timer_read();
sequencer_internal_state.phase = SEQUENCER_PHASE_ATTACK;
}
void sequencer_off(void) {
dprintln("sequencer off");
sequencer_config.enabled = false;
sequencer_internal_state.current_step = 0;
}
void sequencer_toggle(void) {
if (is_sequencer_on()) {
sequencer_off();
} else {
sequencer_on();
}
}
void sequencer_set_track_notes(const uint16_t track_notes[SEQUENCER_TRACKS]) {
for (uint8_t i = 0; i < SEQUENCER_TRACKS; i++) {
sequencer_config.track_notes[i] = track_notes[i];
}
}
bool is_sequencer_track_active(uint8_t track) { return (sequencer_internal_state.active_tracks >> track) & true; }
void sequencer_set_track_activation(uint8_t track, bool value) {
if (value) {
sequencer_internal_state.active_tracks |= (1 << track);
} else {
sequencer_internal_state.active_tracks &= ~(1 << track);
}
dprintf("sequencer: track %d is %s\n", track, value ? "active" : "inactive");
}
void sequencer_toggle_track_activation(uint8_t track) { sequencer_set_track_activation(track, !is_sequencer_track_active(track)); }
void sequencer_toggle_single_active_track(uint8_t track) {
if (is_sequencer_track_active(track)) {
sequencer_internal_state.active_tracks = 0;
} else {
sequencer_internal_state.active_tracks = 1 << track;
}
}
bool is_sequencer_step_on(uint8_t step) { return step < SEQUENCER_STEPS && (sequencer_config.steps[step] & sequencer_internal_state.active_tracks) > 0; }
bool is_sequencer_step_on_for_track(uint8_t step, uint8_t track) { return step < SEQUENCER_STEPS && (sequencer_config.steps[step] >> track) & true; }
void sequencer_set_step(uint8_t step, bool value) {
if (step < SEQUENCER_STEPS) {
if (value) {
sequencer_config.steps[step] |= sequencer_internal_state.active_tracks;
} else {
sequencer_config.steps[step] &= ~sequencer_internal_state.active_tracks;
}
dprintf("sequencer: step %d is %s\n", step, value ? "on" : "off");
} else {
dprintf("sequencer: step %d is out of range\n", step);
}
}
void sequencer_toggle_step(uint8_t step) {
if (is_sequencer_step_on(step)) {
sequencer_set_step_off(step);
} else {
sequencer_set_step_on(step);
}
}
void sequencer_set_all_steps(bool value) {
for (uint8_t step = 0; step < SEQUENCER_STEPS; step++) {
if (value) {
sequencer_config.steps[step] |= sequencer_internal_state.active_tracks;
} else {
sequencer_config.steps[step] &= ~sequencer_internal_state.active_tracks;
}
}
dprintf("sequencer: all steps are %s\n", value ? "on" : "off");
}
uint8_t sequencer_get_tempo(void) { return sequencer_config.tempo; }
void sequencer_set_tempo(uint8_t tempo) {
if (tempo > 0) {
sequencer_config.tempo = tempo;
dprintf("sequencer: tempo set to %d bpm\n", tempo);
} else {
dprintln("sequencer: cannot set tempo to 0");
}
}
void sequencer_increase_tempo(void) {
// Handling potential uint8_t overflow
if (sequencer_config.tempo < UINT8_MAX) {
sequencer_set_tempo(sequencer_config.tempo + 1);
} else {
dprintf("sequencer: cannot set tempo above %d\n", UINT8_MAX);
}
}
void sequencer_decrease_tempo(void) { sequencer_set_tempo(sequencer_config.tempo - 1); }
sequencer_resolution_t sequencer_get_resolution(void) { return sequencer_config.resolution; }
void sequencer_set_resolution(sequencer_resolution_t resolution) {
if (resolution >= 0 && resolution < SEQUENCER_RESOLUTIONS) {
sequencer_config.resolution = resolution;
dprintf("sequencer: resolution set to %d\n", resolution);
} else {
dprintf("sequencer: resolution %d is out of range\n", resolution);
}
}
void sequencer_increase_resolution(void) { sequencer_set_resolution(sequencer_config.resolution + 1); }
void sequencer_decrease_resolution(void) { sequencer_set_resolution(sequencer_config.resolution - 1); }
uint8_t sequencer_get_current_step(void) { return sequencer_internal_state.current_step; }
void sequencer_phase_attack(void) {
dprintf("sequencer: step %d\n", sequencer_internal_state.current_step);
dprintf("sequencer: time %d\n", timer_read());
if (sequencer_internal_state.current_track == 0) {
sequencer_internal_state.timer = timer_read();
}
if (timer_elapsed(sequencer_internal_state.timer) < sequencer_internal_state.current_track * SEQUENCER_TRACK_THROTTLE) {
return;
}
#if defined(MIDI_ENABLE) || defined(MIDI_MOCKED)
if (is_sequencer_step_on_for_track(sequencer_internal_state.current_step, sequencer_internal_state.current_track)) {
process_midi_basic_noteon(midi_compute_note(sequencer_config.track_notes[sequencer_internal_state.current_track]));
}
#endif
if (sequencer_internal_state.current_track < SEQUENCER_TRACKS - 1) {
sequencer_internal_state.current_track++;
} else {
sequencer_internal_state.phase = SEQUENCER_PHASE_RELEASE;
}
}
void sequencer_phase_release(void) {
if (timer_elapsed(sequencer_internal_state.timer) < SEQUENCER_PHASE_RELEASE_TIMEOUT + sequencer_internal_state.current_track * SEQUENCER_TRACK_THROTTLE) {
return;
}
#if defined(MIDI_ENABLE) || defined(MIDI_MOCKED)
if (is_sequencer_step_on_for_track(sequencer_internal_state.current_step, sequencer_internal_state.current_track)) {
process_midi_basic_noteoff(midi_compute_note(sequencer_config.track_notes[sequencer_internal_state.current_track]));
}
#endif
if (sequencer_internal_state.current_track > 0) {
sequencer_internal_state.current_track--;
} else {
sequencer_internal_state.phase = SEQUENCER_PHASE_PAUSE;
}
}
void sequencer_phase_pause(void) {
if (timer_elapsed(sequencer_internal_state.timer) < sequencer_get_step_duration()) {
return;
}
sequencer_internal_state.current_step = (sequencer_internal_state.current_step + 1) % SEQUENCER_STEPS;
sequencer_internal_state.phase = SEQUENCER_PHASE_ATTACK;
}
void matrix_scan_sequencer(void) {
if (!sequencer_config.enabled) {
return;
}
if (sequencer_internal_state.phase == SEQUENCER_PHASE_PAUSE) {
sequencer_phase_pause();
}
if (sequencer_internal_state.phase == SEQUENCER_PHASE_RELEASE) {
sequencer_phase_release();
}
if (sequencer_internal_state.phase == SEQUENCER_PHASE_ATTACK) {
sequencer_phase_attack();
}
}
uint16_t sequencer_get_beat_duration(void) { return get_beat_duration(sequencer_config.tempo); }
uint16_t sequencer_get_step_duration(void) { return get_step_duration(sequencer_config.tempo, sequencer_config.resolution); }
uint16_t get_beat_duration(uint8_t tempo) {
// Dont crash in the unlikely case where the given tempo is 0
if (tempo == 0) {
return get_beat_duration(60);
}
/**
* Given
* t = tempo and d = duration, both strictly greater than 0
* When
* t beats / minute = 1 beat / d ms
* Then
* t beats / 60000ms = 1 beat / d ms
* d ms = 60000ms / t
*/
return 60000 / tempo;
}
uint16_t get_step_duration(uint8_t tempo, sequencer_resolution_t resolution) {
/**
* Resolution cheatsheet:
* 1/2 => 2 steps per 4 beats
* 1/2T => 3 steps per 4 beats
* 1/4 => 4 steps per 4 beats
* 1/4T => 6 steps per 4 beats
* 1/8 => 8 steps per 4 beats
* 1/8T => 12 steps per 4 beats
* 1/16 => 16 steps per 4 beats
* 1/16T => 24 steps per 4 beats
* 1/32 => 32 steps per 4 beats
*
* The number of steps for binary resolutions follows the powers of 2.
* The ternary variants are simply 1.5x faster.
*/
bool is_binary = resolution % 2 == 0;
uint8_t binary_steps = 2 << (resolution / 2);
uint16_t binary_step_duration = get_beat_duration(tempo) * 4 / binary_steps;
return is_binary ? binary_step_duration : 2 * binary_step_duration / 3;
}

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@ -0,0 +1,122 @@
/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdbool.h>
#include "debug.h"
#include "timer.h"
// Maximum number of steps: 256
#ifndef SEQUENCER_STEPS
# define SEQUENCER_STEPS 16
#endif
// Maximum number of tracks: 8
#ifndef SEQUENCER_TRACKS
# define SEQUENCER_TRACKS 8
#endif
#ifndef SEQUENCER_TRACK_THROTTLE
# define SEQUENCER_TRACK_THROTTLE 3
#endif
#ifndef SEQUENCER_PHASE_RELEASE_TIMEOUT
# define SEQUENCER_PHASE_RELEASE_TIMEOUT 30
#endif
/**
* Make sure that the items of this enumeration follow the powers of 2, separated by a ternary variant.
* Check the implementation of `get_step_duration` for further explanation.
*/
typedef enum { SQ_RES_2, SQ_RES_2T, SQ_RES_4, SQ_RES_4T, SQ_RES_8, SQ_RES_8T, SQ_RES_16, SQ_RES_16T, SQ_RES_32, SEQUENCER_RESOLUTIONS } sequencer_resolution_t;
typedef struct {
bool enabled;
uint8_t steps[SEQUENCER_STEPS];
uint16_t track_notes[SEQUENCER_TRACKS];
uint8_t tempo; // Is a maximum tempo of 255 reasonable?
sequencer_resolution_t resolution;
} sequencer_config_t;
/**
* Because Digital Audio Workstations get overwhelmed when too many MIDI signals are sent concurrently,
* We use a "phase" state machine to delay some of the events.
*/
typedef enum sequencer_phase_t {
SEQUENCER_PHASE_ATTACK, // t=0ms, send the MIDI note on signal
SEQUENCER_PHASE_RELEASE, // t=SEQUENCER_PHASE_RELEASE_TIMEOUT ms, send the MIDI note off signal
SEQUENCER_PHASE_PAUSE // t=step duration ms, loop
} sequencer_phase_t;
typedef struct {
uint8_t active_tracks;
uint8_t current_track;
uint8_t current_step;
uint16_t timer;
sequencer_phase_t phase;
} sequencer_state_t;
extern sequencer_config_t sequencer_config;
// We expose the internal state to make the feature more "unit-testable"
extern sequencer_state_t sequencer_internal_state;
bool is_sequencer_on(void);
void sequencer_toggle(void);
void sequencer_on(void);
void sequencer_off(void);
void sequencer_set_track_notes(const uint16_t track_notes[SEQUENCER_TRACKS]);
bool is_sequencer_track_active(uint8_t track);
void sequencer_set_track_activation(uint8_t track, bool value);
void sequencer_toggle_track_activation(uint8_t track);
void sequencer_toggle_single_active_track(uint8_t track);
#define sequencer_activate_track(track) sequencer_set_track_activation(track, true)
#define sequencer_deactivate_track(track) sequencer_set_track_activation(track, false)
bool is_sequencer_step_on(uint8_t step);
bool is_sequencer_step_on_for_track(uint8_t step, uint8_t track);
void sequencer_set_step(uint8_t step, bool value);
void sequencer_toggle_step(uint8_t step);
void sequencer_set_all_steps(bool value);
#define sequencer_set_step_on(step) sequencer_set_step(step, true)
#define sequencer_set_step_off(step) sequencer_set_step(step, false)
#define sequencer_set_all_steps_on() sequencer_set_all_steps(true)
#define sequencer_set_all_steps_off() sequencer_set_all_steps(false)
uint8_t sequencer_get_tempo(void);
void sequencer_set_tempo(uint8_t tempo);
void sequencer_increase_tempo(void);
void sequencer_decrease_tempo(void);
sequencer_resolution_t sequencer_get_resolution(void);
void sequencer_set_resolution(sequencer_resolution_t resolution);
void sequencer_increase_resolution(void);
void sequencer_decrease_resolution(void);
uint8_t sequencer_get_current_step(void);
uint16_t sequencer_get_beat_duration(void);
uint16_t sequencer_get_step_duration(void);
uint16_t get_beat_duration(uint8_t tempo);
uint16_t get_step_duration(uint8_t tempo, sequencer_resolution_t resolution);
void matrix_scan_sequencer(void);

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/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "midi_mock.h"
uint16_t last_noteon = 0;
uint16_t last_noteoff = 0;
uint16_t midi_compute_note(uint16_t keycode) { return keycode; }
void process_midi_basic_noteon(uint16_t note) { last_noteon = note; }
void process_midi_basic_noteoff(uint16_t note) { last_noteoff = note; }

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/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
extern uint16_t last_noteon;
extern uint16_t last_noteoff;
uint16_t midi_compute_note(uint16_t keycode);
void process_midi_basic_noteon(uint16_t note);
void process_midi_basic_noteoff(uint16_t note);

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# The letter case of these variables might seem odd. However:
# - it is consistent with the serial_link example that is used as a reference in the Unit Testing article (https://docs.qmk.fm/#/unit_testing?id=adding-tests-for-new-or-existing-features)
# - Neither `make test:sequencer` or `make test:SEQUENCER` work when using SCREAMING_SNAKE_CASE
sequencer_DEFS := -DNO_DEBUG -DMIDI_MOCKED
sequencer_SRC := \
$(QUANTUM_PATH)/sequencer/tests/midi_mock.c \
$(QUANTUM_PATH)/sequencer/tests/sequencer_tests.cpp \
$(QUANTUM_PATH)/sequencer/sequencer.c \
$(TMK_PATH)/common/test/timer.c

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/* Copyright 2020 Rodolphe Belouin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gtest/gtest.h"
extern "C" {
#include "sequencer.h"
#include "midi_mock.h"
#include "quantum/quantum_keycodes.h"
}
extern "C" {
void set_time(uint32_t t);
void advance_time(uint32_t ms);
}
class SequencerTest : public ::testing::Test {
protected:
void SetUp() override {
config_copy.enabled = sequencer_config.enabled;
for (int i = 0; i < SEQUENCER_STEPS; i++) {
config_copy.steps[i] = sequencer_config.steps[i];
}
for (int i = 0; i < SEQUENCER_TRACKS; i++) {
config_copy.track_notes[i] = sequencer_config.track_notes[i];
}
config_copy.tempo = sequencer_config.tempo;
config_copy.resolution = sequencer_config.resolution;
state_copy.active_tracks = sequencer_internal_state.active_tracks;
state_copy.current_track = sequencer_internal_state.current_track;
state_copy.current_step = sequencer_internal_state.current_step;
state_copy.timer = sequencer_internal_state.timer;
last_noteon = 0;
last_noteoff = 0;
set_time(0);
}
void TearDown() override {
sequencer_config.enabled = config_copy.enabled;
for (int i = 0; i < SEQUENCER_STEPS; i++) {
sequencer_config.steps[i] = config_copy.steps[i];
}
for (int i = 0; i < SEQUENCER_TRACKS; i++) {
sequencer_config.track_notes[i] = config_copy.track_notes[i];
}
sequencer_config.tempo = config_copy.tempo;
sequencer_config.resolution = config_copy.resolution;
sequencer_internal_state.active_tracks = state_copy.active_tracks;
sequencer_internal_state.current_track = state_copy.current_track;
sequencer_internal_state.current_step = state_copy.current_step;
sequencer_internal_state.timer = state_copy.timer;
}
sequencer_config_t config_copy;
sequencer_state_t state_copy;
};
TEST_F(SequencerTest, TestOffByDefault) { EXPECT_EQ(is_sequencer_on(), false); }
TEST_F(SequencerTest, TestOn) {
sequencer_config.enabled = false;
sequencer_on();
EXPECT_EQ(is_sequencer_on(), true);
// sequencer_on is idempotent
sequencer_on();
EXPECT_EQ(is_sequencer_on(), true);
}
TEST_F(SequencerTest, TestOff) {
sequencer_config.enabled = true;
sequencer_off();
EXPECT_EQ(is_sequencer_on(), false);
// sequencer_off is idempotent
sequencer_off();
EXPECT_EQ(is_sequencer_on(), false);
}
TEST_F(SequencerTest, TestToggle) {
sequencer_config.enabled = false;
sequencer_toggle();
EXPECT_EQ(is_sequencer_on(), true);
sequencer_toggle();
EXPECT_EQ(is_sequencer_on(), false);
}
TEST_F(SequencerTest, TestNoActiveTrackByDefault) {
for (int i = 0; i < SEQUENCER_TRACKS; i++) {
EXPECT_EQ(is_sequencer_track_active(i), false);
}
}
TEST_F(SequencerTest, TestGetActiveTracks) {
sequencer_internal_state.active_tracks = (1 << 7) + (1 << 6) + (1 << 3) + (1 << 1) + (1 << 0);
EXPECT_EQ(is_sequencer_track_active(0), true);
EXPECT_EQ(is_sequencer_track_active(1), true);
EXPECT_EQ(is_sequencer_track_active(2), false);
EXPECT_EQ(is_sequencer_track_active(3), true);
EXPECT_EQ(is_sequencer_track_active(4), false);
EXPECT_EQ(is_sequencer_track_active(5), false);
EXPECT_EQ(is_sequencer_track_active(6), true);
EXPECT_EQ(is_sequencer_track_active(7), true);
}
TEST_F(SequencerTest, TestGetActiveTracksOutOfBound) {
sequencer_set_track_activation(-1, true);
sequencer_set_track_activation(8, true);
EXPECT_EQ(is_sequencer_track_active(-1), false);
EXPECT_EQ(is_sequencer_track_active(8), false);
}
TEST_F(SequencerTest, TestToggleTrackActivation) {
sequencer_internal_state.active_tracks = (1 << 7) + (1 << 6) + (1 << 3) + (1 << 1) + (1 << 0);
sequencer_toggle_track_activation(6);
EXPECT_EQ(is_sequencer_track_active(0), true);
EXPECT_EQ(is_sequencer_track_active(1), true);
EXPECT_EQ(is_sequencer_track_active(2), false);
EXPECT_EQ(is_sequencer_track_active(3), true);
EXPECT_EQ(is_sequencer_track_active(4), false);
EXPECT_EQ(is_sequencer_track_active(5), false);
EXPECT_EQ(is_sequencer_track_active(6), false);
EXPECT_EQ(is_sequencer_track_active(7), true);
}
TEST_F(SequencerTest, TestToggleSingleTrackActivation) {
sequencer_internal_state.active_tracks = (1 << 7) + (1 << 6) + (1 << 3) + (1 << 1) + (1 << 0);
sequencer_toggle_single_active_track(2);
EXPECT_EQ(is_sequencer_track_active(0), false);
EXPECT_EQ(is_sequencer_track_active(1), false);
EXPECT_EQ(is_sequencer_track_active(2), true);
EXPECT_EQ(is_sequencer_track_active(3), false);
EXPECT_EQ(is_sequencer_track_active(4), false);
EXPECT_EQ(is_sequencer_track_active(5), false);
EXPECT_EQ(is_sequencer_track_active(6), false);
EXPECT_EQ(is_sequencer_track_active(7), false);
}
TEST_F(SequencerTest, TestStepOffByDefault) {
for (int i = 0; i < SEQUENCER_STEPS; i++) {
EXPECT_EQ(is_sequencer_step_on(i), false);
}
}
TEST_F(SequencerTest, TestIsStepOffWithNoActiveTracks) {
sequencer_config.steps[3] = 0xFF;
EXPECT_EQ(is_sequencer_step_on(3), false);
}
TEST_F(SequencerTest, TestIsStepOffWithGivenActiveTracks) {
sequencer_set_track_activation(2, true);
sequencer_set_track_activation(3, true);
sequencer_config.steps[3] = (1 << 0) + (1 << 1);
// No active tracks have the step enabled, so it is off
EXPECT_EQ(is_sequencer_step_on(3), false);
}
TEST_F(SequencerTest, TestIsStepOnWithGivenActiveTracks) {
sequencer_set_track_activation(2, true);
sequencer_set_track_activation(3, true);
sequencer_config.steps[3] = (1 << 2);
// Track 2 has the step enabled, so it is on
EXPECT_EQ(is_sequencer_step_on(3), true);
}
TEST_F(SequencerTest, TestIsStepOffForGivenTrack) {
sequencer_config.steps[3] = 0x00;
EXPECT_EQ(is_sequencer_step_on_for_track(3, 5), false);
}
TEST_F(SequencerTest, TestIsStepOnForGivenTrack) {
sequencer_config.steps[3] = (1 << 5);
EXPECT_EQ(is_sequencer_step_on_for_track(3, 5), true);
}
TEST_F(SequencerTest, TestSetStepOn) {
sequencer_internal_state.active_tracks = (1 << 6) + (1 << 3) + (1 << 2);
sequencer_config.steps[2] = (1 << 5) + (1 << 2);
sequencer_set_step(2, true);
EXPECT_EQ(sequencer_config.steps[2], (1 << 6) + (1 << 5) + (1 << 3) + (1 << 2));
}
TEST_F(SequencerTest, TestSetStepOff) {
sequencer_internal_state.active_tracks = (1 << 6) + (1 << 3) + (1 << 2);
sequencer_config.steps[2] = (1 << 5) + (1 << 2);
sequencer_set_step(2, false);
EXPECT_EQ(sequencer_config.steps[2], (1 << 5));
}
TEST_F(SequencerTest, TestToggleStepOff) {
sequencer_internal_state.active_tracks = (1 << 6) + (1 << 3) + (1 << 2);
sequencer_config.steps[2] = (1 << 5) + (1 << 2);
sequencer_toggle_step(2);
EXPECT_EQ(sequencer_config.steps[2], (1 << 5));
}
TEST_F(SequencerTest, TestToggleStepOn) {
sequencer_internal_state.active_tracks = (1 << 6) + (1 << 3) + (1 << 2);
sequencer_config.steps[2] = 0;
sequencer_toggle_step(2);
EXPECT_EQ(sequencer_config.steps[2], (1 << 6) + (1 << 3) + (1 << 2));
}
TEST_F(SequencerTest, TestSetAllStepsOn) {
sequencer_internal_state.active_tracks = (1 << 6) + (1 << 3) + (1 << 2);
sequencer_config.steps[2] = (1 << 7) + (1 << 6);
sequencer_config.steps[4] = (1 << 3) + (1 << 1);
sequencer_set_all_steps(true);
EXPECT_EQ(sequencer_config.steps[2], (1 << 7) + (1 << 6) + (1 << 3) + (1 << 2));
EXPECT_EQ(sequencer_config.steps[4], (1 << 6) + (1 << 3) + (1 << 2) + (1 << 1));
}
TEST_F(SequencerTest, TestSetAllStepsOff) {
sequencer_internal_state.active_tracks = (1 << 6) + (1 << 3) + (1 << 2);
sequencer_config.steps[2] = (1 << 7) + (1 << 6);
sequencer_config.steps[4] = (1 << 3) + (1 << 1);
sequencer_set_all_steps(false);
EXPECT_EQ(sequencer_config.steps[2], (1 << 7));
EXPECT_EQ(sequencer_config.steps[4], (1 << 1));
}
TEST_F(SequencerTest, TestSetTempoZero) {
sequencer_config.tempo = 123;
sequencer_set_tempo(0);
EXPECT_EQ(sequencer_config.tempo, 123);
}
TEST_F(SequencerTest, TestIncreaseTempoMax) {
sequencer_config.tempo = UINT8_MAX;
sequencer_increase_tempo();
EXPECT_EQ(sequencer_config.tempo, UINT8_MAX);
}
TEST_F(SequencerTest, TestSetResolutionLowerBound) {
sequencer_config.resolution = SQ_RES_4;
sequencer_set_resolution((sequencer_resolution_t)-1);
EXPECT_EQ(sequencer_config.resolution, SQ_RES_4);
}
TEST_F(SequencerTest, TestSetResolutionUpperBound) {
sequencer_config.resolution = SQ_RES_4;
sequencer_set_resolution(SEQUENCER_RESOLUTIONS);
EXPECT_EQ(sequencer_config.resolution, SQ_RES_4);
}
TEST_F(SequencerTest, TestGetBeatDuration) {
EXPECT_EQ(get_beat_duration(60), 1000);
EXPECT_EQ(get_beat_duration(120), 500);
EXPECT_EQ(get_beat_duration(240), 250);
EXPECT_EQ(get_beat_duration(0), 1000);
}
TEST_F(SequencerTest, TestGetStepDuration60) {
/**
* Resolution cheatsheet:
* 1/2 => 2 steps per 4 beats
* 1/2T => 3 steps per 4 beats
* 1/4 => 4 steps per 4 beats
* 1/4T => 6 steps per 4 beats
* 1/8 => 8 steps per 4 beats
* 1/8T => 12 steps per 4 beats
* 1/16 => 16 steps per 4 beats
* 1/16T => 24 steps per 4 beats
* 1/32 => 32 steps per 4 beats
*
* The number of steps for binary resolutions follows the powers of 2.
* The ternary variants are simply 1.5x faster.
*/
EXPECT_EQ(get_step_duration(60, SQ_RES_2), 2000);
EXPECT_EQ(get_step_duration(60, SQ_RES_4), 1000);
EXPECT_EQ(get_step_duration(60, SQ_RES_8), 500);
EXPECT_EQ(get_step_duration(60, SQ_RES_16), 250);
EXPECT_EQ(get_step_duration(60, SQ_RES_32), 125);
EXPECT_EQ(get_step_duration(60, SQ_RES_2T), 1333);
EXPECT_EQ(get_step_duration(60, SQ_RES_4T), 666);
EXPECT_EQ(get_step_duration(60, SQ_RES_8T), 333);
EXPECT_EQ(get_step_duration(60, SQ_RES_16T), 166);
}
TEST_F(SequencerTest, TestGetStepDuration120) {
/**
* Resolution cheatsheet:
* 1/2 => 2 steps per 4 beats
* 1/2T => 3 steps per 4 beats
* 1/4 => 4 steps per 4 beats
* 1/4T => 6 steps per 4 beats
* 1/8 => 8 steps per 4 beats
* 1/8T => 12 steps per 4 beats
* 1/16 => 16 steps per 4 beats
* 1/16T => 24 steps per 4 beats
* 1/32 => 32 steps per 4 beats
*
* The number of steps for binary resolutions follows the powers of 2.
* The ternary variants are simply 1.5x faster.
*/
EXPECT_EQ(get_step_duration(30, SQ_RES_2), 4000);
EXPECT_EQ(get_step_duration(30, SQ_RES_4), 2000);
EXPECT_EQ(get_step_duration(30, SQ_RES_8), 1000);
EXPECT_EQ(get_step_duration(30, SQ_RES_16), 500);
EXPECT_EQ(get_step_duration(30, SQ_RES_32), 250);
EXPECT_EQ(get_step_duration(30, SQ_RES_2T), 2666);
EXPECT_EQ(get_step_duration(30, SQ_RES_4T), 1333);
EXPECT_EQ(get_step_duration(30, SQ_RES_8T), 666);
EXPECT_EQ(get_step_duration(30, SQ_RES_16T), 333);
}
void setUpMatrixScanSequencerTest(void) {
sequencer_config.enabled = true;
sequencer_config.tempo = 120;
sequencer_config.resolution = SQ_RES_16;
// Configure the notes for each track
sequencer_config.track_notes[0] = MI_C;
sequencer_config.track_notes[1] = MI_D;
sequencer_config.track_notes[2] = MI_E;
sequencer_config.track_notes[3] = MI_F;
sequencer_config.track_notes[4] = MI_G;
sequencer_config.track_notes[5] = MI_A;
sequencer_config.track_notes[6] = MI_B;
sequencer_config.track_notes[7] = MI_C;
// Turn on some steps
sequencer_config.steps[0] = (1 << 0);
sequencer_config.steps[2] = (1 << 1) + (1 << 0);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldAttackFirstTrackOfFirstStep) {
setUpMatrixScanSequencerTest();
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, MI_C);
EXPECT_EQ(last_noteoff, 0);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldAttackSecondTrackAfterFirstTrackOfFirstStep) {
setUpMatrixScanSequencerTest();
matrix_scan_sequencer();
EXPECT_EQ(sequencer_internal_state.current_step, 0);
EXPECT_EQ(sequencer_internal_state.current_track, 1);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_ATTACK);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldNotAttackInactiveTrackFirstStep) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = 1;
// Wait some time after the first track has been attacked
advance_time(SEQUENCER_TRACK_THROTTLE);
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, 0);
EXPECT_EQ(last_noteoff, 0);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldAttackThirdTrackAfterSecondTrackOfFirstStep) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = 1;
// Wait some time after the second track has been attacked
advance_time(2 * SEQUENCER_TRACK_THROTTLE);
matrix_scan_sequencer();
EXPECT_EQ(sequencer_internal_state.current_step, 0);
EXPECT_EQ(sequencer_internal_state.current_track, 2);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_ATTACK);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldEnterReleasePhaseAfterLastTrackHasBeenProcessedFirstStep) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = SEQUENCER_TRACKS - 1;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, 0);
EXPECT_EQ(last_noteoff, 0);
EXPECT_EQ(sequencer_internal_state.current_step, 0);
EXPECT_EQ(sequencer_internal_state.current_track, SEQUENCER_TRACKS - 1);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_RELEASE);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldReleaseBackwards) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = SEQUENCER_TRACKS - 1;
sequencer_internal_state.phase = SEQUENCER_PHASE_RELEASE;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the release timeout
advance_time(SEQUENCER_PHASE_RELEASE_TIMEOUT);
matrix_scan_sequencer();
EXPECT_EQ(sequencer_internal_state.current_step, 0);
EXPECT_EQ(sequencer_internal_state.current_track, SEQUENCER_TRACKS - 2);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_RELEASE);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldNotReleaseInactiveTrackFirstStep) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = SEQUENCER_TRACKS - 1;
sequencer_internal_state.phase = SEQUENCER_PHASE_RELEASE;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the release timeout
advance_time(SEQUENCER_PHASE_RELEASE_TIMEOUT);
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, 0);
EXPECT_EQ(last_noteoff, 0);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldReleaseFirstTrackFirstStep) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = 0;
sequencer_internal_state.phase = SEQUENCER_PHASE_RELEASE;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the release timeout
advance_time(SEQUENCER_PHASE_RELEASE_TIMEOUT);
// + all the other notes have been released
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, 0);
EXPECT_EQ(last_noteoff, MI_C);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldEnterPausePhaseAfterRelease) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = 0;
sequencer_internal_state.phase = SEQUENCER_PHASE_RELEASE;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the release timeout
advance_time(SEQUENCER_PHASE_RELEASE_TIMEOUT);
// + all the other notes have been released
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
matrix_scan_sequencer();
EXPECT_EQ(sequencer_internal_state.current_step, 0);
EXPECT_EQ(sequencer_internal_state.current_track, 0);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_PAUSE);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldProcessFirstTrackOfSecondStepAfterPause) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 0;
sequencer_internal_state.current_track = 0;
sequencer_internal_state.phase = SEQUENCER_PHASE_PAUSE;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the release timeout
advance_time(SEQUENCER_PHASE_RELEASE_TIMEOUT);
// + all the other notes have been released
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the step duration (one 16th at tempo=120 lasts 125ms)
advance_time(125);
matrix_scan_sequencer();
EXPECT_EQ(sequencer_internal_state.current_step, 1);
EXPECT_EQ(sequencer_internal_state.current_track, 1);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_ATTACK);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldProcessSecondTrackTooEarly) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 2;
sequencer_internal_state.current_track = 1;
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, 0);
EXPECT_EQ(last_noteoff, 0);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldProcessSecondTrackOnTime) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = 2;
sequencer_internal_state.current_track = 1;
// Wait until first track has been attacked
advance_time(SEQUENCER_TRACK_THROTTLE);
matrix_scan_sequencer();
EXPECT_EQ(last_noteon, MI_D);
EXPECT_EQ(last_noteoff, 0);
}
TEST_F(SequencerTest, TestMatrixScanSequencerShouldLoopOnceSequenceIsOver) {
setUpMatrixScanSequencerTest();
sequencer_internal_state.current_step = SEQUENCER_STEPS - 1;
sequencer_internal_state.current_track = 0;
sequencer_internal_state.phase = SEQUENCER_PHASE_PAUSE;
// Wait until all notes have been attacked
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the release timeout
advance_time(SEQUENCER_PHASE_RELEASE_TIMEOUT);
// + all the other notes have been released
advance_time((SEQUENCER_TRACKS - 1) * SEQUENCER_TRACK_THROTTLE);
// + the step duration (one 16th at tempo=120 lasts 125ms)
advance_time(125);
matrix_scan_sequencer();
EXPECT_EQ(sequencer_internal_state.current_step, 0);
EXPECT_EQ(sequencer_internal_state.current_track, 1);
EXPECT_EQ(sequencer_internal_state.phase, SEQUENCER_PHASE_ATTACK);
}

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@ -0,0 +1 @@
TEST_LIST += sequencer

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@ -1,6 +1,7 @@
TEST_LIST = $(notdir $(patsubst %/rules.mk,%,$(wildcard $(ROOT_DIR)/tests/*/rules.mk)))
FULL_TESTS := $(TEST_LIST)
include $(ROOT_DIR)/quantum/sequencer/tests/testlist.mk
include $(ROOT_DIR)/quantum/serial_link/tests/testlist.mk
define VALIDATE_TEST_LIST