One TTS to rule them all

snipsSuperTTS.sh

#! /usr/bin/env bash

# By Psycho and Others
# Shell script to handle different TTS and online / offline connectivity
# This bash script can be set as a custom TTS for snips but also called directly from your skills
# a great way to give more than one personality to your assistant
# Original script: https://gist.github.com/Psychokiller1888/cf10af3220b5cd6d9c92c709c6af92c2
# This script: https://gist.github.com/DanBmh/1cf91324f1eb1ddf109937fc3bd6b577


####### COMMON #########################################################################################################

#------------------------------------
# Set your cache path
cache="/home/pi/snipsSuperTTS/cache"
#------------------------------------

# - Install mpg123
# - The cache path is created by the script itself at first run! If you already have the cache directories, make sure to set their owner to "_snips" => sudo chown -R _snips /home/pi/snipsSuperTTS/cache
# - Edit /etc/snips.toml
# - Set "customtts" as snips-tts provider
# - Add as customtts: command = ["/home/pi/snipsSuperTTS/snipsSuperTTS.sh", "%%OUTPUT_FILE%%", "google", "%%LANG%%", "US", "Wavenet-C", "FEMALE", "%%TEXT%%", "22050", "1.0", "0.0"]
# - Restart snips: sudo systemctl restart snips-*

# Change "US" to another language country code, "GB" per exemple for a british voice
# You can customize the "Wavenet-C" to another voice of your choice. https://cloud.google.com/text-to-speech/docs/voices / https://docs.aws.amazon.com/polly/latest/dg/voicelist.html
# Offline voices possibilities are: picotts or mycroft
# Fit "FEMALE" to the voice gender you want. Note this is linked to google voices
# You can change the sample rate, the last argument, to your needs
# If you want a total customized experience, you can easily enable both google and amazon and use a different one depending on what you want. Don't be shy, there's no limit
# Note that not all parameters do something depending on the voice you choose. Those are marked with "--" in the provided examples

# Debugging:
# Run script by hand and look for audio files:
# . /home/pi/snipsSuperTTS/snipsSuperTTS.sh "test123.wav" "google" "en" "US" "Wavenet-C" "--" "Hello, i am speaking to you" "22050" "1.0" "0.0"
# Check output of snips-tts service:
# sudo systemctl stop snips-tts.service; snips-tts -vvv
# Start tts service again: sudo systemctl start snips-tts.service
# Check syslog: tail -f /var/log/syslog
# Check content of cache files and temporary files


####### MycroftAI - Mimic ##############################################################################################

# https://github.com/MycroftAI/mimic
# This one is pretty long to install, but hey, the quality compared to pico is worth it!
# Available voices: aew ahw aup awb axb bdl clb eey fem gka jmk ksp ljm rms rxr slt slt_hts
# Or you can use an external voice on http.

# Example: command = ["/home/pi/snipsSuperTTS/snipsSuperTTS.sh", "%%OUTPUT_FILE%%", "mycroft", "%%LANG%%", "--", "slt_hts", "--", "%%TEXT%%", "22050", "--", "--"]

# sudo apt-get install gcc make pkg-config automake libtool libasound2-dev
# git clone https://github.com/MycroftAI/mimic.git
# cd mimic
# ./dependencies.sh --prefix="/usr/local"
# ./autogen.sh
# ./configure --prefix="/usr/local"
# make
# sudo /sbin/ldconfig
# make check

#------------------------------------
# Set the following option to True to use Mycroft instead of pico. Don't forget to set the path too
useMycroft=false
mycroftPath="/home/pi/mimic"
#------------------------------------


####### GOOGLE #########################################################################################################

# Install Google SDK: https://cloud.google.com/text-to-speech/docs/quickstart-protocol
# Follow point 6. to initialize the sdk after creating your service account
# Get your api key from the console https://console.developers.google.com

#------------------------------------
# Uncomment the following and create a txt file with your api key and set the path accordingly:
#googleWavenetAPIKey=$(</home/pi/snipsSuperTTS/google_api_key.txt)
#------------------------------------

# Example: command = ["/home/pi/snipsSuperTTS/snipsSuperTTS.sh", "%%OUTPUT_FILE%%", "google", "%%LANG%%", "US", "Wavenet-C", "--", "%%TEXT%%", "22050", "1.0", "0.0"]


####### AMAZON #########################################################################################################

# Install Amazon sdk
# curl "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"
# unzip awscli-bundle.zip
# ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws

#------------------------------------
# Uncomment the following lines and set them accordingly:
#export AWS_ACCESS_KEY_ID=""
#export AWS_SECRET_ACCESS_KEY=""
#export AWS_DEFAULT_REGION="eu-central-1"
#awscli='/usr/local/bin/aws'
#------------------------------------

# Example: command = ["/home/pi/snipsSuperTTS/snipsSuperTTS.sh", "%%OUTPUT_FILE%%", "amazon", "%%LANG%%", "US", "Joanna", "--", "%%TEXT%%", "22050", "--", "--"]


########################################################################################################################

outfile="$1"
service="$2"
lang="$3"
country="$4"
voice="$5"
gender="$6"
text="$7"
sampleRate="$8"
speed="$9"
pitch="${10}"

if [ "$service" = "mycroft" ] || [ "$service" = "picotts" ]; then
    status="offline"
else
    echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1
    if [ $? -eq 0 ]; then
        status="online"
    else
        status="offline"
    fi
    # Alternative for some people having problem pinging google.com. Comment the above and uncomment the following
    #wget -q --tries=1 --timeout=1 --spider http://google.com
    #if [[ $? -eq 0 ]]; then
    #    status="online"
    #else
    #    status="offline"
    #fi
fi


# ======================================================================================================================

function picotts() {
    case "$lang" in
        *en*)
            lang="en-US";;
        *de*)
            lang="de-DE";;
        *es*)
            lang="es-ES";;
        *fr*)
            lang="fr-FR";;
        *it*)
            lang="it-IT";;
        *)
            lang="en-US";;
        esac
    text=$(sed 's/<[^>]*>//g' <<< "$text")
    pico2wave -w "$outfile" -l "$lang" "$text"
}


function mycroft() {
    text=$(sed 's/<[^>]*>//g' <<< "$text")
    ."$mycroftPath/mimic" -t "$text" -o "$outfile" -voice "$mycroftPath""/voices/cmu_us_""$voice"".flitevox"
}


function offline_voice(){
    if [[ "$useMycroft" = true ]]; then
        mycroft
    else
        picotts
    fi
}


# ======================================================================================================================

if [ "$service" = "google" ]; then
    cache="$cache""/google/"
    mkdir -p "$cache"

    text=${text//\'/\\\'}

    languageCode="$lang"-"$country"
    googleVoice="$languageCode"-"$voice"

    md5string="$text"_"$googleVoice"_"$sampleRate"_"$lang"_"$speed"_"$pitch"
    hash="$(echo -n "$md5string" | md5sum | sed 's/ .*$//')"

    cachefile="$cache""$hash".wav
    downloadFile="/tmp/""$hash"

    if [[ -f "$cachefile" ]]; then
        cp "$cachefile" "$outfile"
    else
        if [ "$status" != "online" ]; then
            offline_voice
        else
            if [[ "$text" != *"<speak>"* ]]; then
                text="<speak>""$text""</speak>"
            fi

            curl -H "Content-Type: application/json; charset=utf-8" \
            --data "{
                'input':{
                    'ssml':'$text'
                },
                'voice':{
                    'languageCode':'$languageCode',
                    'name':'$googleVoice'
                },
                'audioConfig':{
                    'audioEncoding':'MP3',
                    'sampleRateHertz':'$sampleRate',
                    'speakingRate':'$speed',
                    'pitch':'$pitch'
                }
            }" \
            "https://texttospeech.googleapis.com/v1/text:synthesize?key="$googleWavenetAPIKey > "$downloadFile"

            sed 's/audioContent//' "$downloadFile" > "$downloadFile".tmp
            cat "$downloadFile".tmp |  tr -d '\n ":{}' > "$downloadFile".tmp2
            base64 "$downloadFile".tmp2 --decode >"$downloadFile".mp3

            mpg123 --quiet --wav "$cachefile" "$downloadFile".mp3
            rm "$downloadFile" &&
            rm "$downloadFile".tmp &&
            rm "$downloadFile".tmp2 &&
            rm "$downloadFile".mp3
            cp "$cachefile" "$outfile"
        fi
    fi

elif [ "$service" = "amazon" ]; then
    cache="$cache/amazon/"
    mkdir -p "$cache"

    amazonVoice=$voice

    md5string="$text""_""$amazonVoice"_"$sampleRate"_"$lang"
    hash="$(echo -n "$md5string" | md5sum | sed 's/ .*$//')"

    cachefile="$cache""$hash".mp3

    if [ -f "$cachefile" ]; then
        mpg123 -q -w $outfile $cachefile
    else
        if [ "$status" != "online" ]; then
            offline_voice
        else
            if [[ "$text" != *"<speak>"* ]];then
                text="<speak>""$text""</speak>"
            fi

            $awscli polly synthesize-speech \
            --output-format mp3 \
            --voice-id "$voice" \
            --sample-rate "$sampleRate" \
            --text-type ssml \
            --text "$text" \
            "$cachefile"

            mpg123 -q -w $outfile $cachefile
        fi
    fi

elif [ "$service" = "google_translate" ]; then
    cache="$cache""/google_translate/"
    mkdir -p "$cache"

    md5string="$text"_"$lang"
    hash="$(echo -n "$md5string" | md5sum | sed 's/ .*$//')"

    cachefile="$cache""$hash".wav
    downloadFile="/tmp/""$hash"

    if [[ -f "$cachefile" ]]; then
        cp "$cachefile" "$outfile"
    else
        if [ "$status" != "online" ]; then
            offline_voice
        else
            wget -q -U Mozilla -O "$downloadFile" "http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&tl=$lang&q=$text"
            mpg123 --quiet --wav "$cachefile" "$downloadFile"
            rm "$downloadFile"
            cp "$cachefile" "$outfile"
        fi
    fi

elif [ "$service" = "picotts" ]; then
    picotts
elif [ "$service" = "mycroft" ]; then
    mycroft

else
    offline_voice
fi

Added speed and pitch parameters for google wavenet.
Added account free google translate tts, as suggested by @a1higgins-oss.
Did some formatting for better readability.
Added some comments and moved google api key to extra file.