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547 lines
13 KiB
547 lines
13 KiB
/*
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MicroDexed
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MicroDexed is a port of the Dexed sound engine
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(https://github.com/asb2m10/dexed) for the Teensy-3.5/3.6 with audio shield.
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Dexed ist heavily based on https://github.com/google/music-synthesizer-for-android
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(c)2018,2019 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 <Arduino.h>
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#include "config.h"
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#include <Wire.h>
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#include <SPI.h>
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#include <SD.h>
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#include "dexed.h"
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#include "dexed_sysex.h"
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extern AudioSourceMicroDexed * MicroDexed[NUM_DEXED];
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void create_sysex_filename(uint8_t b, char* sysex_file_name, uint8_t instance_id)
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{
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// init and set name for actual bank
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memset(sysex_file_name, 0, 4 + VOICE_NAME_LEN);
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sysex_file_name[0] = '/';
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itoa(b, &sysex_file_name[1], 10);
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strcat(sysex_file_name, "/");
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strcat(sysex_file_name, bank_names[instance_id][b]);
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#ifdef DEBUG
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Serial.print(F("Created sysex_filename from bank "));
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Serial.print(b, DEC);
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Serial.print(F(" and name "));
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Serial.print(bank_names[instance_id][b]);
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Serial.print(F(": ["));
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Serial.print(sysex_file_name);
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Serial.println(F("]"));
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#endif
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}
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void strip_extension(char* s, char* target)
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{
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char tmp[BANK_NAME_LEN];
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char* token;
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strcpy(tmp, s);
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token = strtok(tmp, ".");
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if (token == NULL)
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strcpy(target, "*ERROR*");
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else
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strcpy(target, token);
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}
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bool get_voice_names_from_bank(uint8_t b, uint8_t instance_id)
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{
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File sysex;
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uint8_t voice_counter = 0;
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int32_t bulk_checksum_calc = 0;
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int8_t bulk_checksum;
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b = constrain(b, 0, MAX_BANKS - 1);
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// erase all data for voice names
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memset(voice_names[instance_id], 0, MAX_VOICES * VOICE_NAME_LEN);
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if (sd_card_available)
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{
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char sysex_file_name[4 + VOICE_NAME_LEN];
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// init and set name for actual bank
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create_sysex_filename(b, sysex_file_name, instance_id);
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#ifdef DEBUG
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Serial.print(F("Reading voice names for bank ["));
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Serial.print(sysex_file_name);
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Serial.println(F("]"));
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#endif
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// try to open bank directory
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sysex = SD.open(sysex_file_name);
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if (!sysex)
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return (false);
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if (sysex.size() != 4104) // check sysex size
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx file size wrong."));
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#endif
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return (false);
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}
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if (sysex.read() != 0xf0) // check sysex start-byte
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx start byte not found."));
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#endif
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return (false);
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}
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if (sysex.read() != 0x43) // check sysex vendor is Yamaha
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx vendor not Yamaha."));
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#endif
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return (false);
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}
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sysex.seek(4103);
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if (sysex.read() != 0xf7) // check sysex end-byte
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx end byte not found."));
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#endif
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return (false);
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}
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sysex.seek(3);
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if (sysex.read() != 0x09) // check for sysex type (0x09=32 voices)
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx type not 32 voices."));
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#endif
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return (false);
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}
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sysex.seek(4102); // Bulk checksum
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bulk_checksum = sysex.read();
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sysex.seek(6); // start of bulk data
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for (uint16_t n = 0; n < 4096; n++)
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{
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uint8_t d = sysex.read();
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if ((n % 128) >= 118 && (n % 128) < 128) // found the start of the voicename
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{
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voice_names[instance_id][voice_counter][(n % 128) - 118] = d;
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}
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if (n % 128 == 127)
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voice_counter++;
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bulk_checksum_calc -= d;
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}
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bulk_checksum_calc &= 0x7f;
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#ifdef DEBUG
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Serial.print(F("Bulk checksum : 0x"));
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Serial.print(bulk_checksum_calc, HEX);
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Serial.print(F(" [0x"));
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Serial.print(bulk_checksum, HEX);
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Serial.println(F("]"));
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#endif
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if (bulk_checksum_calc != bulk_checksum)
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{
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#ifdef DEBUG
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Serial.print(F("E : Bulk checksum mismatch : 0x"));
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Serial.print(bulk_checksum_calc, HEX);
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Serial.print(F(" != 0x"));
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Serial.println(bulk_checksum, HEX);
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#endif
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return (false);
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}
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}
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return (false);
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}
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uint8_t get_bank_names(uint8_t instance_id)
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{
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File root;
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uint8_t bank_counter = 0;
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// erase all data for bank names
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memset(bank_names[instance_id], 0, MAX_BANKS * BANK_NAME_LEN);
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if (sd_card_available)
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{
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char bankdir[4];
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do
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{
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// init and set name for actual bank directory
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memset(bankdir, 0, sizeof(bankdir));
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bankdir[0] = '/';
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itoa(bank_counter, &bankdir[1], 10);
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// try to open directory
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root = SD.open(bankdir);
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if (!root)
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break;
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// read filenames
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File entry = root.openNextFile();
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if (!entry.isDirectory())
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{
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strcpy(bank_names[instance_id][bank_counter], entry.name());
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#ifdef DEBUG
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Serial.print(F("Found bank ["));
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Serial.print(bank_names[instance_id][bank_counter]);
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Serial.println(F("]"));
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#endif
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bank_counter++;
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}
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} while (root);
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return (bank_counter);
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}
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else
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return (bank_counter);
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}
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bool load_sysex(uint8_t b, uint8_t v, uint8_t instance_id)
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{
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#if DEBUG
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bool found = false;
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#endif
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v = constrain(v, 0, MAX_VOICES - 1);
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b = constrain(b, 0, MAX_BANKS - 1);
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if (sd_card_available)
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{
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File sysex;
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char sysex_file_name[10 + VOICE_NAME_LEN];
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uint8_t data[128];
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create_sysex_filename(b, sysex_file_name, instance_id);
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sysex = SD.open(sysex_file_name);
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if (!sysex)
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{
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#ifdef DEBUG
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Serial.print(F("E : Cannot open "));
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Serial.print(sysex_file_name);
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Serial.println(F("from SD."));
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#endif
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return (false);
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}
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if (get_sysex_voice(sysex, v, data))
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{
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#ifdef DEBUG
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Serial.print(F("Loading sysex "));
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Serial.print(sysex_file_name);
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Serial.print(F(" ["));
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Serial.print(voice_names[instance_id][v]);
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Serial.println(F("]"));
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#endif
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bool ret = MicroDexed[instance_id]->loadPackedVoiceParameters(data);
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configuration.dexed[instance_id].transpose = MicroDexed[instance_id]->data[DEXED_VOICE_OFFSET + DEXED_TRANSPOSE];
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return (ret);
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}
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#ifdef DEBUG
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else
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Serial.println(F("E : Cannot load voice data"));
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#endif
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}
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#ifdef DEBUG
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if (found == false)
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Serial.println(F("E : File not found."));
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#endif
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return (false);
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}
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bool get_sysex_voice(File sysex, uint8_t voice_number, uint8_t* data)
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{
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uint16_t n;
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int32_t bulk_checksum_calc = 0;
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int8_t bulk_checksum;
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if (sysex.size() != 4104) // check sysex size
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx file size wrong."));
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#endif
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return (false);
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}
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if (sysex.read() != 0xf0) // check sysex start-byte
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx start byte not found."));
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#endif
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return (false);
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}
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if (sysex.read() != 0x43) // check sysex vendor is Yamaha
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx vendor not Yamaha."));
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#endif
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return (false);
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}
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sysex.seek(4103);
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if (sysex.read() != 0xf7) // check sysex end-byte
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx end byte not found."));
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#endif
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return (false);
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}
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sysex.seek(3);
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if (sysex.read() != 0x09) // check for sysex type (0x09=32 voices)
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx type not 32 voices."));
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#endif
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return (false);
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}
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sysex.seek(4102); // Bulk checksum
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bulk_checksum = sysex.read();
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sysex.seek(6); // start of bulk data
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for (n = 0; n < 4096; n++)
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{
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uint8_t d = sysex.read();
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if (n >= voice_number * 128 && n < (voice_number + 1) * 128)
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{
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data[n - (voice_number * 128)] = d;
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}
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bulk_checksum_calc -= d;
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}
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bulk_checksum_calc &= 0x7f;
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#ifdef DEBUG
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Serial.print(F("Bulk checksum : 0x"));
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Serial.print(bulk_checksum_calc, HEX);
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Serial.print(F(" [0x"));
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Serial.print(bulk_checksum, HEX);
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Serial.println(F("]"));
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#endif
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if (bulk_checksum_calc != bulk_checksum)
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{
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#ifdef DEBUG
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Serial.print(F("E : Bulk checksum mismatch : 0x"));
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Serial.print(bulk_checksum_calc, HEX);
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Serial.print(F(" != 0x"));
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Serial.println(bulk_checksum, HEX);
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#endif
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return (false);
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}
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MicroDexed[0]->render_time_max = 0;
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return (true);
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}
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void create_sysex_setup_filename(uint8_t b, uint8_t v, char* sysex_setup_file_name)
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{
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// init and set name for actual bank
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memset(sysex_setup_file_name, 0, SYSEXFILENAME_LEN);
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sysex_setup_file_name[0] = '/';
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itoa(b, &sysex_setup_file_name[1], 10);
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strcat(sysex_setup_file_name, "/");
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itoa(v, &sysex_setup_file_name[3], 10);
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strcat(sysex_setup_file_name, ".syx");
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#ifdef DEBUG
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Serial.print(F("Created sysex_setup_file_name from bank "));
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Serial.print(b, DEC);
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Serial.print(F(" and voice "));
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Serial.print(v, DEC);
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Serial.print(F(": ["));
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Serial.print(sysex_setup_file_name);
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Serial.println(F("]"));
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#endif
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}
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bool get_sysex_setup(File sysex, config_t configuration)
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{
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uint16_t n;
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int32_t bulk_checksum_calc = 0;
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int8_t bulk_checksum;
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if (sysex.size() != 47 || sysex.size() != 78) // check sysex size
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx file size wrong."));
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#endif
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return (false);
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}
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if (sysex.read() != 0xf0) // check sysex start-byte
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx start byte not found."));
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#endif
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return (false);
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}
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if (sysex.read() != 0x67) // check sysex vendor is unofficial SYSEX-ID for MicroDexed
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx vendor not unofficial SYSEX-ID for MicroDexed."));
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#endif
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return (false);
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}
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sysex.seek(sysex.size());
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if (sysex.read() != 0xf7) // check sysex end-byte
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx end byte not found."));
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#endif
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return (false);
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}
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sysex.seek(3);
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uint8_t dexed_sysex_setup_type = sysex.read();
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if (dexed_sysex_setup_type >= 0x42 && dexed_sysex_setup_type < 0x45) // check for sysex type (0x75=MicroDexed setup for one to four instances)
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{
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#ifdef DEBUG
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Serial.println(F("E : SysEx type not MicroDexed setup."));
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#endif
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return (false);
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}
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sysex.seek(4);
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uint8_t sysex_config_size = sysex.read();
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sysex.seek(sysex.size() - 1); // Bulk checksum
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bulk_checksum = sysex.read();
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sysex.seek(6); // start of bulk data
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for (n = 0; n < sysex.size() - 2; n++)
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{
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uint8_t d = sysex.read();
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bulk_checksum_calc -= d;
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}
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bulk_checksum_calc &= 0x7f;
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#ifdef DEBUG
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Serial.print(F("Bulk checksum : 0x"));
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Serial.print(bulk_checksum_calc, HEX);
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Serial.print(F(" [0x"));
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Serial.print(bulk_checksum, HEX);
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Serial.println(F("]"));
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#endif
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if (bulk_checksum_calc != bulk_checksum)
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{
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#ifdef DEBUG
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Serial.print(F("E : Bulk checksum mismatch : 0x"));
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Serial.print(bulk_checksum_calc, HEX);
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Serial.print(F(" != 0x"));
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Serial.println(bulk_checksum, HEX);
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#endif
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return (false);
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}
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// Now everything is ok and we can read the data
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sysex.seek(6); // start of bulk data
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uint8_t* conf = (uint8_t*)&configuration + 4;
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for (n = 0; n < sysex_config_size; n++)
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{
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uint8_t d = sysex.read();
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#ifdef DEBUG
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Serial.print(n + 6, DEC);
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Serial.print(F("="));
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Serial.println(d);
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#endif
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*(conf + n) = d;
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}
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configuration.checksum = crc32((uint8_t*)&configuration + 4, sizeof(configuration) - 4);
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return (true);
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}
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bool load_sysex_setup(uint8_t b, uint8_t v, uint8_t instance_id)
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{
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#if DEBUG
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bool found = false;
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#endif
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v = constrain(v, 0, MAX_VOICES - 1);
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b = constrain(b, 0, MAX_BANKS - 1);
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if (sd_card_available)
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{
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File sysex;
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char sysex_setup_file_name[SYSEXFILENAME_LEN];
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create_sysex_setup_filename(b, v, sysex_setup_file_name);
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sysex = SD.open(sysex_setup_file_name);
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if (!sysex)
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{
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#ifdef DEBUG
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Serial.print(F("E : Cannot open "));
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Serial.print(sysex_setup_file_name);
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Serial.println(F("from SD."));
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#endif
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return (false);
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}
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if (get_sysex_setup(sysex, configuration))
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{
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#ifdef DEBUG
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Serial.print(F("Loading sysex setup "));
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Serial.print(sysex_setup_file_name);
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Serial.print(F(" ["));
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Serial.print(voice_names[instance_id][v]);
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Serial.println(F("]"));
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#endif
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return (true);
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}
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#ifdef DEBUG
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else
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Serial.println(F("E : Cannot load setup data"));
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#endif
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}
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#ifdef DEBUG
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if (found == false)
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Serial.println(F("E : File not found."));
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#endif
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return (false);
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}
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bool save_sysex_setup(uint8_t b, uint8_t v, config_t configuration)
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{
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const char* sysex_filename = "config.syx";
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if (sd_card_available)
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{
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File sysex;
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char sysex_file_name[20];
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create_sysex_filename(b, sysex_file_name, v);
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sysex = SD.open(sysex_file_name);
|
|
if (!sysex)
|
|
{
|
|
#ifdef DEBUG
|
|
Serial.print(F("E : Cannot create "));
|
|
Serial.print(sysex_file_name);
|
|
Serial.println(F("on SD."));
|
|
#endif
|
|
return (false);
|
|
}
|
|
}
|
|
|
|
return (false);
|
|
}
|
|
|