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#!/bin/env sh

# Copyright (c) 2022 BrainDamage

# 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
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


lang='en-US'
filename=''
text=''
parseArgs() {
	nextArg=''
	for arg in "${@}"
	do
		case "${arg}" in
			-w|--wave)
				nextArg="file"
			;;
			--wave=*)
				filename=$(echo "${arg}" | cut -d '=' -f 2-)
			;;
			-l|--lang)
				nextArg="lang"
			;;
			--lang=*)
				lang=$(echo "${arg}" | cut -d '=' -f 2-)
			;;
			--help|-?)
				echo 'Usage: pico2wave <words>'
				echo '	-w, --wave=filename.wav     Write output to this WAV file (extension SHOULD be .wav)'
				echo '	-l, --lang=lang             Language (default: "en-US")'
				echo ''
				echo 'Help options:'
				echo '	-?, --help                  Show this help message'
				echo '	--usage                     Display brief usage message'
				exit 0
			;;
			--usage)
				echo 'Usage: pico2wave [-?] [-w|--wave=filename.wav] [-l|--lang=lang] [-?|--help] [--usage] <words>'
				exit 0
			;;
			*)
				case "$nextArg" in
					file)
						filename="${arg}"
					;;
					lang)
						lang="${arg}"
					;;
					*)
						test -n "${text}" && text="${text} ${arg}" || text="${arg}"
					;;
				esac
				nextArg=""
		esac
	done
}
parseArgs "${@}"

test -z "${filename}" && parseArgs '--help' >&2 && exit 1

echo "${text}" | pico-tts -l "${lang}" | ffmpeg -guess_layout_max 0 -hide_banner -loglevel warning -ar 16000 -f s16le -ac 1 -i - -y "${filename}"