Compare commits
2 Commits
| Author | SHA1 | Date |
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Holger Wirtz
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4a1ed44e75 | 6 years ago |
 Holger Wirtz
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dd2faa4797 | 6 years ago |
@ -0,0 +1,47 @@ |
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/*
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MicroMDAEPiano |
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MicroMDAEPiano is a port of the MDA-EPiano sound engine |
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(https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
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(c)2019 H. Wirtz <wirtz@parasitstudio.de> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software Foundation, |
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <Encoder.h> |
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#ifndef ENCODER4_H_INCLUDED |
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#define ENCODER4_H_INCLUDED |
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class Encoder4 : public Encoder |
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{ |
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public: |
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using Encoder::Encoder; |
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int32_t read() |
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{ |
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return (Encoder::read() / 4); |
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} |
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void write(int32_t p) |
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{ |
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Encoder::write(p * 4); |
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} |
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}; |
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#endif |
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@ -0,0 +1,86 @@ |
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/*
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MicroMDAEPiano |
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MicroMDAEPiano is a port of the MDA-EPiano sound engine |
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(https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
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(c)2019 H. Wirtz <wirtz@parasitstudio.de> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software Foundation, |
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef LIQUIDCRYSTALPLUS_I2C_H_INCLUDED |
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#define LIQUIDCRYSTALPLUS_I2C_H_INCLUDED |
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#include <LiquidCrystal_I2C.h> // https://www.arduinolibraries.info/libraries/liquid-crystal-i2-c |
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#define STRING_BUF_SIZE 21 |
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class LiquidCrystalPlus_I2C : public LiquidCrystal_I2C |
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{ |
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public: |
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using LiquidCrystal_I2C::LiquidCrystal_I2C; |
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void show(uint8_t y, uint8_t x, uint8_t fs, char *str) |
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{ |
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_show(y, x, fs, str, false, false); |
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} |
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void show(uint8_t y, uint8_t x, uint8_t fs, long num) |
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{ |
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char _buf10[STRING_BUF_SIZE]; |
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_show(y, x, fs, itoa(num, _buf10, 10), true, true); |
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} |
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private: |
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void _show(uint8_t pos_y, uint8_t pos_x, uint8_t field_size, char *str, bool justify_right, bool fill_zero) |
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{ |
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{ |
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char tmp[STRING_BUF_SIZE]; |
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char *s = tmp; |
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uint8_t l = strlen(str); |
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memset(tmp, 0, sizeof(tmp)); |
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if (fill_zero == true) |
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memset(tmp, '0', field_size); |
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else |
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memset(tmp, 0x20, field_size - 1); // blank
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if (l > field_size) |
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l = field_size; |
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if (justify_right == true) |
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s += field_size - l; |
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strncpy(s, str, l); |
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setCursor(pos_x, pos_y); |
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print(tmp); |
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#ifdef DEBUG |
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Serial.print(pos_y, DEC); |
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Serial.print(F("/")); |
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Serial.print(pos_x, DEC); |
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Serial.print(F(": [")); |
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Serial.print(tmp); |
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Serial.println(F("]")); |
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#endif |
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} |
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} |
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}; |
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#endif |
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@ -0,0 +1,120 @@ |
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/* Modulated delay line
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Inspired by; |
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http://musicdsp.org/showArchiveComment.php?ArchiveID=154
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But details changed for Teensy Audio. |
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No feedback within the class, just done externally |
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so we can add filters and stuff to the loop. |
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Delay time is a signal input to the block, and functions from 0 to 0x7fff, |
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scaling the delay time accordingly. |
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*/ |
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/*
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Copyright (c) 2016, Byron Jacquot, SparkFun Electronics |
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SparkFun code, firmware, and software is released under |
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the MIT License(http://opensource.org/licenses/MIT).
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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|
copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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The above copyright notice, development funding notice, and this permission |
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notice shall be included in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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#include "mod-delay.h" |
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#define INTERPOLATE (1) |
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void AudioEffectModDelay::update(void) |
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{ |
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audio_block_t *audioblock, *controlblockDelay; |
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int16_t *data, *end, *ctrlDelay; |
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int32_t extract_index; |
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#ifdef INTERPOLATE |
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int32_t interp_delta; |
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int32_t next; |
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int16_t calc; |
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#endif |
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if (buffer_length == 0) |
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return; |
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audioblock = receiveWritable(0); |
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if (!audioblock) return; |
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controlblockDelay = receiveReadOnly(1); |
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if (!controlblockDelay) { |
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release(audioblock); |
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return; |
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} |
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data = audioblock->data; |
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end = audioblock->data + AUDIO_BLOCK_SAMPLES; |
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ctrlDelay = controlblockDelay->data; |
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do |
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{ |
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delayline_p[insert_index] = *data; |
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insert_index++; |
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if (insert_index >= buffer_length) |
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{ |
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insert_index = 0; |
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} |
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#ifdef INTERPOLATE |
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interp_delta = (buffer_length * (*ctrlDelay)); |
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delay_delta = (interp_delta >> 15); // MSB's for delay len
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interp_delta &= 0x7fff; //LSBs for interp distance
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#else |
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delay_delta = (buffer_length * (*ctrlDelay)) >> 15; |
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#endif |
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extract_index = insert_index - delay_delta; |
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if (extract_index < 0) |
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{ |
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extract_index = buffer_length + extract_index; |
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} |
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#ifdef INTERPOLATE |
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// Use the fractional part to interpolate between samples
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next = extract_index + 1; |
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if (next >= buffer_length) |
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{ |
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next = 0; |
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} |
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calc = delayline_p[next] - delayline_p[extract_index]; |
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calc = (calc * interp_delta ) >> 15; |
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calc += delayline_p[extract_index]; |
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*data = calc; |
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#else |
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*data = delayline_p[extract_index]; |
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#endif |
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data++; |
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ctrlDelay++; |
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} while (data < end); |
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transmit(audioblock); |
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release(audioblock); |
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release(controlblockDelay); |
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} |
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@ -0,0 +1,89 @@ |
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/* Modulated delay line
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Inspired by; |
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http://musicdsp.org/showArchiveComment.php?ArchiveID=154
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But details changed for Teensy Audio. |
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No feedback within the class, just done externally |
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so we can add filters and stuff to the loop. |
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|
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Delay time is a signal input to the block, and functions from 0 to 0x7fff, |
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|
scaling the delay time accordingly. |
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*/ |
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/*
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Copyright (c) 2016, Byron Jacquot, SparkFun Electronics |
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SparkFun code, firmware, and software is released under |
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the MIT License(http://opensource.org/licenses/MIT).
|
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|
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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|
of this software and associated documentation files (the "Software"), to deal |
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|
in the Software without restriction, including without limitation the rights |
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|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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|
copies of the Software, and to permit persons to whom the Software is |
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|
furnished to do so, subject to the following conditions: |
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|
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The above copyright notice, development funding notice, and this permission |
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|
notice shall be included in all copies or substantial portions of the Software. |
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|
|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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/* from https://forum.pjrc.com/threads/46793-Anyone-Doing-Pitch-Shifting */ |
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#pragma once |
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#ifndef _mod_delay_h_ |
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#define _mod_delay_h_ |
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#include "AudioStream.h" |
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#include <Arduino.h> |
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class AudioEffectModDelay: public AudioStream |
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{ |
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public: |
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AudioEffectModDelay (void) : AudioStream(2, inputQueueArray) |
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{ |
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buffer_length = 0; |
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} |
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virtual void update(void); |
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// Set the parameters
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void setbuf(int32_t delay_len, int16_t* delay_buf ) |
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{ |
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delayline_p = delay_buf; |
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insert_index = 0; |
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buffer_length = delay_len; |
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memset(delayline_p, 0, buffer_length); |
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}; |
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void inspect(void) |
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{ |
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Serial.print(insert_index, HEX); |
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Serial.print(' '); |
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Serial.print(delay_delta, HEX); |
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Serial.print(' '); |
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Serial.println(buffer_length, HEX); |
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}; |
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private: |
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audio_block_t *inputQueueArray[2]; |
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int16_t *delayline_p; |
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int32_t insert_index; |
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int32_t buffer_length; |
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int32_t delay_delta; |
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}; |
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#endif |
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