pinebuds/convert.sh

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#!/bin/sh
txt_to_wav() {
hash=$(echo $arg1 | md5sum | cut -d" " -f1)
xxd -r -p $arg1 > out-$hash.sbc
# sbcinfo out-$hash.sbc
ffmpeg -y \
-v quiet `# verbosity - other options are "quiet", "error", "panic"` \
-f sbc `# accept SBC format` \
-ac 1 `# audio channel: #1` \
-i ./out-$hash.sbc `# input file: out.raw` \
$arg2 `# output to $arg2`
rm out-$hash.sbc
}
audio_to_txt() {
hash=$(echo $arg1 | md5sum | cut -d" " -f1)
ffmpeg -y \
-v quiet `# verbosity - other options are "quiet", "error", "panic"` \
-i $arg1 `#input file: $arg1` \
-f sbc `#output format: SBC` \
-ar 16000 `# audio rate: 16 kHz` \
-ac 1 `# audio channel: #1` \
-aq 16 `# audio quality: 16 (for SBC this means bitpool=16)` \
-map_metadata -1 `# ????` \
out-$hash.sbc `# output to out.raw`
# sbcinfo out-$hash.sbc
xxd -i out-$hash.sbc `# output in C include file style` \
| head -n -2 `# skip last two xxd outline lines (skip C formatting)` \
| tail -n +2 `# start output on line 2 of xxd output (skip C formatting)` \
| sed 's/ //g' `# remove spaces` \
| tr --delete '\n' `# remove newlines` \
| sed 's/,/\,\n/16; P; D' `# collect into lines with the right length` \
> $arg2
rm out-$hash.sbc
}
audio_to_cpp() {
hash=$(echo $arg1 | md5sum | cut -d" " -f1)
filename="out-$hash.sbc"
varname=$(echo $arg1 | rev | cut -c5- | cut -d"/" -f1,2 | rev | tr '[:lower:]' '[:upper:]' | tr "/" _)
ffmpeg -y \
-v quiet `# verbosity - other options are "quiet", "error", "panic"` \
-i $arg1 `#input file: $arg1` \
-f sbc `#output format: SBC` \
-ar 16000 `# audio rate: 16 kHz` \
-ac 1 `# audio channel: #1` \
-aq 16 `# audio quality: 16 (for SBC this means bitpool=16)` \
-map_metadata -1 `# ????` \
$varname `# output to something like EN_SOUND_POWER_ON`
echo "#include <stdint.h>\n" > $arg2
# sbcinfo out-$hash.sbc
xxd -i $varname `# output in C include file style` \
>> $arg2
sed -i "s/unsigned char/uint8_t/g" $arg2
#rm $filename
}
[ "${1}" = "-T" ] || [ "${1}" = "--txt-to-wav" ] && shift 1 && args=$@ && arg1=$(echo $args | cut -d" " -f1) && arg2=$(echo $args | cut -d" " -f2) && txt_to_wav && exit
[ "${1}" = "-A" ] || [ "${1}" = "--audio-to-txt" ] && shift 1 && args=$@ && arg1=$(echo $args | cut -d" " -f1) && arg2=$(echo $args | cut -d" " -f2) && audio_to_txt && exit
[ "${1}" = "-C" ] || [ "${1}" = "--audio-to-cpp" ] && shift 1 && args=$@ && arg1=$(echo $args | cut -d" " -f1) && arg2=$(echo $args | cut -d" " -f2) && audio_to_cpp && exit
echo "
Sound format converter:
Usage:
./convert.sh [option] [input-file] [output-file]
Options:
-T or --txt-to-wav Converts the text file to a wav audio file
-A or --audio-to-txt Converts a wav file to a file readable by the old pinebuds firmware
-C or --audio-to-cpp Converts a wav file to a file compilable into the pinebuds firmware
"