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#!/bin/bash |
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# |
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# Converter for WAV to C Header |
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# Used for MicroDexed sampler |
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# |
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# (c) 2021 Holger Wirtz |
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# |
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SOX=`which sox` |
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XXD=`which xxd` |
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TMP="/Volumes/DATA/temp/dexed" |
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AUDIO_BLOCK_SIZE=128 |
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DRUMSET_H="drumset.h" |
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DRUMS_H="drums.h" |
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function cleanexit() |
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{ |
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#rm -rf "${TMP}" |
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echo -n "" |
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} |
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trap cleanexit EXIT |
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if [ -z "${SOX}" ] |
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then |
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echo "Cannot find 'sox' in your PATH." >&2 |
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exit 100 |
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fi |
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if [ -z "${XXD}" ] |
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then |
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echo "Cannot find 'xxd' in your PATH." >&2 |
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exit 101 |
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fi |
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POSITIONAL=() |
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while [[ $# -gt 0 ]]; do |
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key="$1" |
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case $key in |
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-c|--config) |
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CONFIG="$2" |
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shift # past argument |
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shift # past value |
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;; |
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-w|--wavs) |
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WAV_DIR="/Users/nexus/Desktop/dexedDevelopment/samples_dexed" |
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shift # past argument |
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shift # past value |
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;; |
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# -t|--test) |
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# TEST="true" |
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# shift # past argument |
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# ;; |
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*) # unknown option |
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POSITIONAL+=("$1") # save it in an array for later |
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shift # past argument |
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;; |
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esac |
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done |
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if [ ! -f "${CONFIG}" ] |
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then |
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echo "Cannot find configuration file." >&2 |
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exit 200 |
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fi |
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if [ ! -d "${WAV_DIR}" ] |
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then |
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echo "Cannot find folder for WAV files." >&2 |
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exit 201 |
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fi |
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if (( `ls "${WAV_DIR}" | wc -l` == 0 )) |
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then |
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echo "Cannot find any file in ${WAV_DIR}." >&2 |
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exit 202 |
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fi |
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mkdir -p "${TMP}" |
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echo "#pragma once" >"${DRUMSET_H}" |
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rm -f "${DRUMS_H}" |
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cat >> "${DRUMS_H}" << EOF |
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/* |
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MicroDexed |
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MicroDexed is a port of the Dexed sound engine |
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Dexed ist heavily based on https://github.com/google/music-synthesizer-for-an |
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droid |
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(c)2018-2021 H. Wirtz <wirtz@parasitstudio.de> |
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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 and this permission notice shall be included in |
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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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THE SOFTWARE. |
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*/ |
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#include <Arduino.h> |
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#include "config.h" |
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#include "drumset.h" |
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#ifndef _DRUMS_H |
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#define _DRUMS_H |
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typedef struct drum_config_s { |
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uint8_t drum_class; // Type of drum |
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uint8_t midinote; // Triggered by note |
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char name[DRUM_NAME_LEN]; |
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const uint8_t* drum_data; |
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char shortname[2]; // 1 char name for sequencer |
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uint32_t len; // number of elements in drum_data |
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float32_t pitch; // |
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float32_t pan; // Panorama (-1.0 - +1.0) |
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float32_t vol_max; // max. Volume (0.0 - 1.0) |
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float32_t vol_min; // min. Volume (0.0 - 1.0, should be <= vol_max) |
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float32_t reverb_send; // how much signal to send to the reverb (0.0 - 1.0) |
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} drum_config_t; |
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enum {DRUM_NONE, DRUM_BASS, DRUM_SNARE, DRUM_HIHAT, DRUM_HANDCLAP, DRUM_RIDE, DRUM_CHRASH, DRUM_LOWTOM, DRUM_MIDTOM, DRUM_HIGHTOM, DRUM_PERCUSSION}; |
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// DEFAULT MIDI CHANNEL FOR SAMPLEDRUMS |
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uint8_t drum_midi_channel = 10; |
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drum_config_t drum_config[NUM_DRUMSET_CONFIG] = |
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{ |
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EOF |
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declare -a converted_files |
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while IFS= read -r l |
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do |
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declare -a sample |
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if [[ "${l:0:1}" == "#" ]] |
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then |
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continue |
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fi |
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IFS=',' read -ra samplecfg <<< "${l}" |
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sample['class']=`echo "${samplecfg[0]}" | xargs` |
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sample['midinote']=`echo "${samplecfg[1]}" | xargs` |
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sample['name']=`echo "${samplecfg[2]}" | xargs` |
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sample['data_name']="${sample['name']}" |
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sample['shortname']=`echo "${samplecfg[3]}" | xargs` |
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sample['pitch']=`echo "${samplecfg[4]}" | xargs` |
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sample['pan']=`echo "${samplecfg[5]}" | xargs` |
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sample['vol_max']=`echo "${samplecfg[6]}" | xargs` |
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sample['vol_min']=`echo "${samplecfg[7]}" | xargs` |
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sample['reverb_send']=`echo "${samplecfg[8]}" | xargs` |
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sample['filename']=`echo "${samplecfg[9]}" | xargs` |
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if [ -f "${WAV_DIR}/${sample['filename']}" ] |
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then |
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file "${WAV_DIR}/${sample['filename']}" | grep -i -q "WAVEfmt" |
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if [ "${?}" == 0 ] |
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then |
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# Generate drumset.h |
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if [ -z "${converted_files[${sample['filename']}]}" ] |
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then |
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basename=`echo "${sample['filename']}" | cut -d'.' -f1` |
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sox "/Users/nexus/Desktop/dexedDevelopment/samples_dexed/${sample['filename']}" -c 1 -b 16 -L "${TMP}/${basename}.raw" |
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xxd -i "${TMP}/${basename}.raw" > "${TMP}/${basename}.h" |
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sample['len']=`grep "^unsigned int" "${TMP}/${basename}.h" | cut -d"=" -f2 | sed 's/\s*\([0-9]\+\);/\1/'` |
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fill_mod=`expr "${sample['len']}" % "${AUDIO_BLOCK_SIZE}"` |
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fill=`expr "${AUDIO_BLOCK_SIZE}" - "${fill_mod}"` |
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sample['len']=`expr "${sample['len']}" + "${fill}"` |
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sample['len']=`expr "${sample['len']}" / 2` |
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echo "// Converted from ${sample['filename']}, length = ${sample['len']} bytes" >> "${DRUMSET_H}" |
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echo "PROGMEM const uint8_t ${sample['name']}[] = {" >> "${DRUMSET_H}" |
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grep "^ " "${TMP}/${basename}.h" >> "${DRUMSET_H}" |
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if (( "${fill}" > 0 )) |
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then |
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echo -n "," >> "${DRUMSET_H}" |
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fill_counter=0 |
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for i in $(seq 1 "${fill}") |
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do |
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echo -n "0x00" >> "${DRUMSET_H}" |
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let fill_counter+=1 |
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if (( "${fill_counter}" >= 8 )) |
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then |
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echo "," >> "${DRUMSET_H}" |
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fill_counter=0 |
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else |
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echo -n ", " >> "${DRUMSET_H}" |
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fi |
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done |
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fi |
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echo "};" >> "${DRUMSET_H}" |
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converted_files["${sample['filename']}"]="${sample['name']},${sample['len']}" |
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else |
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sample['data_name']=`echo ${converted_files[${sample['filename']}]} | cut -d"," -f1` |
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sample['len']=`echo ${converted_files[${sample['filename']}]} | cut -d"," -f2` |
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fi |
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# Generate drums.h |
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cat >> "${DRUMS_H}" << EOF |
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{ |
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${sample[class]}, |
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${sample[midinote]}, |
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"${sample[name]}", |
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${sample[data_name]}, |
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"${sample[shortname]}", |
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${sample[len]}, |
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${sample[pitch]}, |
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${sample[pan]}, |
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${sample[vol_max]}, |
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${sample[vol_min]}, |
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${sample[reverb_send]} |
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}, |
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EOF |
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fi |
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else |
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echo "File \'${WAV_DIR}/${sample['filename']}\' does not exits." >&2 |
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fi |
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done < "${CONFIG}" |
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cat >> "${DRUMS_H}" << EOF |
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{ |
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DRUM_NONE, |
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0, |
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"EMPTY", |
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NULL, |
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"-", |
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0, |
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0.0, |
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0.0, |
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0.0, |
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0.0, |
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0.0 |
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} |
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}; |
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#endif |
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EOF |
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