ajax_festival.php

<?php

/*
 * This file is part of the ISA package.
 *
 * (c) Informatici Senza Frontiere Onlus <http://informaticisenzafrontiere.org>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

include 'functions.php';
$tmpdir = "/var/www/walks/isa/tmp";
$audiodir = "/var/www/walks/isa/audio";

$available_voices = array();

$available_voices['it'] = array();
$available_voices['en'] = array();

// ITALIAN
$available_voices['it'][0] = 'voice_lp_mbrola';
$available_voices['it'][1] = 'voice_pc_mbrola';
$available_voices['it'][2] = 'voice_lp_diphone';
$available_voices['it'][3] = 'voice_pc_diphone';

//ENGLISH
$available_voices['en'][0] = 'voice_kal_diphone';
$available_voices['en'][1] = 'voice_don_diphone';
$available_voices['en'][2] = 'voice_en1_mbrola';
$available_voices['en'][3] = 'voice_us1_mbrola';
$available_voices['en'][4] = 'voice_us2_mbrola';
$available_voices['en'][5] = 'voice_us3_mbrola';

$chosen_voice = $available_voices['it'][0];

if (isset($_POST["language"]) && ($_POST["language"] != '')) {
    $chosen_voice = $available_voices[$_POST["language"]][0];
}

if (isset($_POST["speech"]) && ($_POST["speech"] != '')) {

    $speech = stripslashes(trim($_POST["speech"]));
    $speech = substr($speech, 0, 2048);
    $volume_scale = intval($_POST["volume_scale"]);
    if ($volume_scale <= 0) { $volume_scale = 1; }
    if ($volume_scale > 100) { $volume_scale = 100; }

    // continue only if some text was entered for conversion
    if ($speech != "") {
        // unique file name
        $filename = substr($speech,0,32);
        $filename = strtolower(trim($filename));
        $filename = preg_replace("/[^a-zA-Z0-9]/", "", $filename);

        // other file names
        $speech_file = "{$tmpdir}/{$filename}";
        $wave_file = "{$audiodir}/{$filename}.wav";
        $mp3_file  = "{$audiodir}/{$filename}.mp3";

        // open the temp file for writing
        $fh = fopen($speech_file, "w+");
        if ($fh) {
            fwrite($fh, $speech);
            fclose($fh);
        }

        // if the speech file exists, use text2wave
        if (file_exists($speech_file)) {
            // create the text2wave command and execute it
            $text2wave_cmd = sprintf("text2wave -eval \"(" . $chosen_voice . ") (Parameter.set 'Duration_Stretch 1.5)\" -o %s -scale %d %s",$wave_file,$volume_scale,$speech_file);
            exec($text2wave_cmd);

            // create the lame command and execute it
            $lame_cmd = sprintf("lame %s %s",$wave_file,$mp3_file);
            exec($lame_cmd);
            unlink($wave_file);

            // delete the temp speech file
            // unlink($speech_file);

            // which file name and type to use? WAV or MP3
            $listen_file = basename($mp3_file);
            $file_type = "MP3";

            // show audio file link
            $show_audio = true;
        }
    }

    $return_value = $listen_file;

    header('Content-Type: text/html');
    echo $return_value;

}