From a18fe8f8305f8a810ef83e4430ba02d56da22c4e Mon Sep 17 00:00:00 2001
From: Holger Wirtz <wirtz@dfn.de>
Date: Thu, 26 Aug 2021 12:02:23 +0200
Subject: [PATCH] Started new converter tool for drumsets.

---
 addon/tools/convertwav.sh |  23 +++++++
 addon/tools/drumset.cfg   |   3 +
 addon/tools/wav2c.cfg     |   0
 addon/tools/wav2c.sh      | 139 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 165 insertions(+)
 create mode 100755 addon/tools/convertwav.sh
 create mode 100644 addon/tools/drumset.cfg
 create mode 100644 addon/tools/wav2c.cfg
 create mode 100755 addon/tools/wav2c.sh

diff --git a/addon/tools/convertwav.sh b/addon/tools/convertwav.sh
new file mode 100755
index 0000000..26a7ffb
--- /dev/null
+++ b/addon/tools/convertwav.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+WAV2SKETCH="${HOME}/Arduino-Teensy/MicroDexed/third-party/wav2sketch"
+
+if [ ! -e "${WAV2SKETCH}" ]
+then
+	gcc "${HOME}/Arduino-Teensy/MicroDexed/third-party/wav2sketch.c" -o "${WAV2SKETCH}"
+	chmod 700 "${WAV2SKETCH}"
+fi
+
+"${WAV2SKETCH}" -16
+
+rm *.h
+rm -f drumset.h
+touch drumset.h
+
+for i in `ls -1 *.cpp`
+do
+	echo "# ${i}" >> drumset.h
+	cat "${i}" | grep '^[A-Za-z0-9]' >> drumset.h
+	echo "" >> drumset.h
+	rm "${i}"
+done
diff --git a/addon/tools/drumset.cfg b/addon/tools/drumset.cfg
new file mode 100644
index 0000000..7b52e97
--- /dev/null
+++ b/addon/tools/drumset.cfg
@@ -0,0 +1,3 @@
+# class, midinote, name, shortname, pitch, pan, vol_max, vol_min, reverb_send, filename
+DRUM_BASS,MIDI_A2,Xrhitom,B,0.0,0.0,0.8,0.0,0.0,bd01.wav
+DRUM_BASS,MIDI_AIS2,Vl1lbeep,B,0.0,0.0,0.8,0.0,0.0,bd02.wav
diff --git a/addon/tools/wav2c.cfg b/addon/tools/wav2c.cfg
new file mode 100644
index 0000000..e69de29
diff --git a/addon/tools/wav2c.sh b/addon/tools/wav2c.sh
new file mode 100755
index 0000000..453bfa8
--- /dev/null
+++ b/addon/tools/wav2c.sh
@@ -0,0 +1,139 @@
+#!/bin/bash
+#
+# Converter for WAV to C Header
+# Used for MicroDexed sampler
+#
+# (c) 2021 Holger Wirtz
+#
+
+SOX=`which sox`
+XXD=`which xxd`
+TMP="/tmp/wav2c"
+AUDIO_BLOCK_SIZE=128
+DRUMSET_H="drumset.h"
+
+function cleanexit()
+{
+	#rm -rf "${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="$2"
+      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}"
+rm -f "${DRUMSET_H}"
+
+while IFS= read -r l
+do
+	declare -A sample
+
+	if [[ "${l:0:1}" == "#" ]]
+	then
+		continue
+	fi
+	IFS=',' read -ra samplecfg <<< "${l}"
+
+	sample['class']="${samplecfg[0]}"
+	sample['midi_note']="${samplecfg[1]}"
+	sample['name']="${samplecfg[2]}"
+	sample['shortname']="${samplecfg[3]}"
+	sample['pitch']="${samplecfg[4]}"
+	sample['pan']="${samplecfg[5]}"
+	sample['vol_max']="${samplecfg[6]}"
+	sample['vol_min']="${samplecfg[7]}"
+	sample['reverb_send']="${samplecfg[8]}"
+	sample['filename']="${samplecfg[9]}"
+
+	if [ -f "${WAV_DIR}/${sample['filename']}" ]
+	then
+		file "${WAV_DIR}/${sample['filename']}" | grep -i -q "WAVE audio"
+		if [ "${?}" == 0 ]
+		then
+			basename=`echo "${sample['filename']}" | cut -d'.' -f1`
+        		sox "${WAV_DIR}/${sample['filename']}" -c 1 -b 16 -L "${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=`expr "${sample['len']}" % "${AUDIO_BLOCK_SIZE}"`
+
+			echo "PROGMEM const int8_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 "};" >> /tmp/b
+		fi
+	else
+		echo "File \'${WAV_DIR}/${sample['filename']}\' does not exits." >&2
+	fi
+done < "${CONFIG}"