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140 lines
2.8 KiB
140 lines
2.8 KiB
3 years ago
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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="/tmp/wav2c"
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AUDIO_BLOCK_SIZE=128
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DRUMSET_H="drumset.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="$2"
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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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rm -f "${DRUMSET_H}"
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while IFS= read -r l
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do
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declare -A sample
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if [[ "${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 <<< "${l}"
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sample['class']="${samplecfg[0]}"
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sample['midi_note']="${samplecfg[1]}"
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sample['name']="${samplecfg[2]}"
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sample['shortname']="${samplecfg[3]}"
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sample['pitch']="${samplecfg[4]}"
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sample['pan']="${samplecfg[5]}"
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sample['vol_max']="${samplecfg[6]}"
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sample['vol_min']="${samplecfg[7]}"
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sample['reverb_send']="${samplecfg[8]}"
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sample['filename']="${samplecfg[9]}"
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if [ -f "${WAV_DIR}/${sample['filename']}" ]
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then
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file "${WAV_DIR}/${sample['filename']}" | grep -i -q "WAVE audio"
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if [ "${?}" == 0 ]
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then
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basename=`echo "${sample['filename']}" | cut -d'.' -f1`
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sox "${WAV_DIR}/${sample['filename']}" -c 1 -b 16 -L "${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=`expr "${sample['len']}" % "${AUDIO_BLOCK_SIZE}"`
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echo "PROGMEM const int8_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 "};" >> /tmp/b
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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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