#!/bin/bash # # Converter for WAV to C Header # Used for MicroDexed sampler # # (c) 2021 Holger Wirtz # SOX=`which sox` XXD=`which xxd` TMP="/Volumes/DATA/temp/dexed" AUDIO_BLOCK_SIZE=128 DRUMSET_H="drumset.h" DRUMS_H="drums.h" function cleanexit() { #rm -rf "${TMP}" echo -n "" } trap cleanexit EXIT if [ -z "${SOX}" ] then echo "Cannot find 'sox' in your PATH." >&2 exit 100 fi if [ -z "${XXD}" ] then echo "Cannot find 'xxd' in your PATH." >&2 exit 101 fi POSITIONAL=() while [[ $# -gt 0 ]]; do key="$1" case $key in -c|--config) CONFIG="$2" shift # past argument shift # past value ;; -w|--wavs) WAV_DIR="/Users/nexus/Desktop/dexedDevelopment/samples_dexed" shift # past argument shift # past value ;; # -t|--test) # TEST="true" # shift # past argument # ;; *) # unknown option POSITIONAL+=("$1") # save it in an array for later shift # past argument ;; esac done if [ ! -f "${CONFIG}" ] then echo "Cannot find configuration file." >&2 exit 200 fi if [ ! -d "${WAV_DIR}" ] then echo "Cannot find folder for WAV files." >&2 exit 201 fi if (( `ls "${WAV_DIR}" | wc -l` == 0 )) then echo "Cannot find any file in ${WAV_DIR}." >&2 exit 202 fi mkdir -p "${TMP}" echo "#pragma once" >"${DRUMSET_H}" rm -f "${DRUMS_H}" cat >> "${DRUMS_H}" << EOF /* MicroDexed MicroDexed is a port of the Dexed sound engine Dexed ist heavily based on https://github.com/google/music-synthesizer-for-an droid (c)2018-2021 H. Wirtz Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER THE SOFTWARE. */ #include #include "config.h" #include "drumset.h" #ifndef _DRUMS_H #define _DRUMS_H typedef struct drum_config_s { uint8_t drum_class; // Type of drum uint8_t midinote; // Triggered by note char name[DRUM_NAME_LEN]; const uint8_t* drum_data; char shortname[2]; // 1 char name for sequencer uint32_t len; // number of elements in drum_data float32_t pitch; // float32_t pan; // Panorama (-1.0 - +1.0) float32_t vol_max; // max. Volume (0.0 - 1.0) float32_t vol_min; // min. Volume (0.0 - 1.0, should be <= vol_max) float32_t reverb_send; // how much signal to send to the reverb (0.0 - 1.0) } drum_config_t; enum {DRUM_NONE, DRUM_BASS, DRUM_SNARE, DRUM_HIHAT, DRUM_HANDCLAP, DRUM_RIDE, DRUM_CHRASH, DRUM_LOWTOM, DRUM_MIDTOM, DRUM_HIGHTOM, DRUM_PERCUSSION}; // DEFAULT MIDI CHANNEL FOR SAMPLEDRUMS uint8_t drum_midi_channel = 10; drum_config_t drum_config[NUM_DRUMSET_CONFIG] = { EOF declare -a converted_files while IFS= read -r l do declare -a sample if [[ "${l:0:1}" == "#" ]] then continue fi IFS=',' read -ra samplecfg <<< "${l}" sample['class']=`echo "${samplecfg[0]}" | xargs` sample['midinote']=`echo "${samplecfg[1]}" | xargs` sample['name']=`echo "${samplecfg[2]}" | xargs` sample['data_name']="${sample['name']}" sample['shortname']=`echo "${samplecfg[3]}" | xargs` sample['pitch']=`echo "${samplecfg[4]}" | xargs` sample['pan']=`echo "${samplecfg[5]}" | xargs` sample['vol_max']=`echo "${samplecfg[6]}" | xargs` sample['vol_min']=`echo "${samplecfg[7]}" | xargs` sample['reverb_send']=`echo "${samplecfg[8]}" | xargs` sample['filename']=`echo "${samplecfg[9]}" | xargs` if [ -f "${WAV_DIR}/${sample['filename']}" ] then file "${WAV_DIR}/${sample['filename']}" | grep -i -q "WAVEfmt" if [ "${?}" == 0 ] then # Generate drumset.h if [ -z "${converted_files[${sample['filename']}]}" ] then basename=`echo "${sample['filename']}" | cut -d'.' -f1` sox "/Users/nexus/Desktop/dexedDevelopment/samples_dexed/${sample['filename']}" -c 1 -b 16 -L "${TMP}/${basename}.raw" xxd -i "${TMP}/${basename}.raw" > "${TMP}/${basename}.h" sample['len']=`grep "^unsigned int" "${TMP}/${basename}.h" | cut -d"=" -f2 | sed 's/\s*\([0-9]\+\);/\1/'` fill_mod=`expr "${sample['len']}" % "${AUDIO_BLOCK_SIZE}"` fill=`expr "${AUDIO_BLOCK_SIZE}" - "${fill_mod}"` sample['len']=`expr "${sample['len']}" + "${fill}"` sample['len']=`expr "${sample['len']}" / 2` echo "// Converted from ${sample['filename']}, length = ${sample['len']} bytes" >> "${DRUMSET_H}" echo "PROGMEM const uint8_t ${sample['name']}[] = {" >> "${DRUMSET_H}" grep "^ " "${TMP}/${basename}.h" >> "${DRUMSET_H}" if (( "${fill}" > 0 )) then echo -n "," >> "${DRUMSET_H}" fill_counter=0 for i in $(seq 1 "${fill}") do echo -n "0x00" >> "${DRUMSET_H}" let fill_counter+=1 if (( "${fill_counter}" >= 8 )) then echo "," >> "${DRUMSET_H}" fill_counter=0 else echo -n ", " >> "${DRUMSET_H}" fi done fi echo "};" >> "${DRUMSET_H}" converted_files["${sample['filename']}"]="${sample['name']},${sample['len']}" else sample['data_name']=`echo ${converted_files[${sample['filename']}]} | cut -d"," -f1` sample['len']=`echo ${converted_files[${sample['filename']}]} | cut -d"," -f2` fi # Generate drums.h cat >> "${DRUMS_H}" << EOF { ${sample[class]}, ${sample[midinote]}, "${sample[name]}", ${sample[data_name]}, "${sample[shortname]}", ${sample[len]}, ${sample[pitch]}, ${sample[pan]}, ${sample[vol_max]}, ${sample[vol_min]}, ${sample[reverb_send]} }, EOF fi else echo "File \'${WAV_DIR}/${sample['filename']}\' does not exits." >&2 fi done < "${CONFIG}" cat >> "${DRUMS_H}" << EOF { DRUM_NONE, 0, "EMPTY", NULL, "-", 0, 0.0, 0.0, 0.0, 0.0, 0.0 } }; #endif EOF