MicroDexed/sequencer.h

/*
   MicroDexed

   MicroDexed is a port of the Dexed sound engine
   (https://github.com/asb2m10/dexed) for the Teensy-3.5/3.6/4.x with audio shield.
   Dexed ist heavily based on https://github.com/google/music-synthesizer-for-android

   (c)2018-2021 M. Koslowski <positionhigh@gmx.de>
                H. Wirtz <wirtz@parasitstudio.de>

   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
   (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, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef _SEQUENCER_H
#define _SEQUENCER_H

typedef struct sequencer_s
{
  float drums_volume;
  uint8_t seq_active_track = 0;
  uint8_t seq_menu;
  bool seq_noteoffsent[NUM_SEQ_TRACKS] = {false, false,  false, false, false, false};
  uint8_t seq_inst_dexed[NUM_SEQ_TRACKS] = { 0, 0, 1, 1 , 1, 1 };
  uint8_t seq_step = 0;
  bool seq_running = false;
  bool seq_recording = false;
  bool smartfilter = true;
  uint8_t seq_state_last_loadsave = 200;
  char seq_name[FILENAME_LEN];
  char seq_name_temp[FILENAME_LEN];
  uint8_t seq_note_in;
  uint8_t seq_note_in_velocity;
  int seq_transpose;

  uint8_t seq_chord_dexed_inst = 0;
  uint8_t seq_chord_velocity = 60;
  uint8_t seq_chord_key_ammount = 4;
  uint8_t seq_element_shift = 0;
  int seq_oct_shift = 0;
  uint8_t arp_style = 0; // up, down, up&down, random

  const uint8_t seq_arps[6][23] = {
    { 0, 4, 7, 12, 16, 19, 24, 28, 31, 36, 40, 43, 48, 52, 55, 60, 64, 67, 72, 76, 79, 84, 0}, //major
    { 0, 3, 7, 12, 15, 19, 24, 27, 31, 36, 39, 43, 48, 51, 55, 60, 63, 67, 72, 75, 79, 84, 0}, //minor
    { 0, 4, 7, 10, 12, 16, 19, 22, 24, 28, 31, 34, 36, 40, 43, 46, 48, 52, 55, 58, 60, 64, 0}, //seventh
    { 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 0}, //augmented
    { 0, 3, 6, 12, 15, 18, 24, 27, 30, 36, 39, 42, 48, 51, 54, 60, 63, 66, 72, 75, 78, 84, 0}, //dim
    { 0, 4, 7, 11, 12, 16, 19, 23, 24, 28, 31, 35, 36, 40, 43, 47, 48, 52, 55, 59, 60, 64, 0}  //maj7
  };

  const char seq_chord_names[7][4] = {
    {'M', 'a', 'j', ' '}, //major
    {'M', 'i', 'n', ' '},
    {'s', 'e', 'v', ' '},
    {'a', 'u', 'g', ' '},
    {'d', 'i', 'm', ' '},
    { 'M', 'a', 'j', '7'},
    { 'N', 'o', 'C', 'd'}
  };

  const char arp_style_names[4][3] = {
    { 'u', 'p', ' '},
    {'d', 'w', 'n'},
    {'u', '&', 'd'},
    {'R', 'N', 'D'}
  };
  int seq_tempo_ms = 180000;
  int seq_bpm = 102;
  uint8_t seq_temp_select_menu;
  uint8_t seq_temp_active_menu = 99;
  uint8_t seq_chain_active_chainstep;
  uint8_t seq_chain_lenght = 3; // 0 = 16 steps, 1 = 32 Steps, 2 = 46 Steps, 3 = 64 Steps
  uint8_t seq_chain_active_step = 0;
  uint8_t seq_prev_note[NUM_SEQ_TRACKS]; // note_offs for every (instr.) track
  uint8_t seq_prev_vel[NUM_SEQ_TRACKS];
  uint8_t arp_step;
  uint8_t arp_note;
  uint8_t arp_chord = 6;
  bool arp_play_basenote = true;
  uint8_t arp_note_prev;
  uint8_t arp_octave;
  uint8_t arp_prev_oct;
  uint8_t arp_speed = 0;
  uint8_t arp_counter = 0;
  uint8_t arp_lenght = 8;
  uint8_t seq_data_buffer[16] = { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 };
  uint8_t seq_data[NUM_SEQ_PATTERN][16] = {
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 },
    { 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0 }
  };
  uint8_t seq_vel[NUM_SEQ_PATTERN][16] = {
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
  };
  uint8_t seq_content_type[NUM_SEQ_PATTERN] = { 0, 0, 0, 0 , 0, 0, 0 , 0 , 0 , 0 }; // 0 = track is Drumtrack, 1 = Instrumenttrack, 2 = Chord or Arpeggio
  uint8_t seq_patternchain[4][NUM_SEQ_TRACKS] = {
    { 0 , 2 , 6 , 9 , 99, 99 },
    { 1 , 2 , 5 , 8 , 99, 99 },
    { 0 , 2 , 6 , 9 , 99, 99 },
    { 1 , 2 , 5 , 7 , 99, 99 }
  };
  uint8_t seq_track_type[NUM_SEQ_TRACKS] = { 0, 0, 1, 1, 1, 1 }; // 0 = track is Drumtrack, 1 = Instrumenttrack, 2 = Chord, 3 = Arp
} sequencer_t;

#endif