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convert_audio.php
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convert_audio.php
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<?php
function substr_unicode($str, $s, $l = null) {
return join("", array_slice(
preg_split("//u", $str, -1, PREG_SPLIT_NO_EMPTY), $s, $l));
}
function mb_str_split( $string ) {
$split = preg_split('/\b([\(\).,\-\',:!\?;"\{\}\[\]„“»«‘\r\n]*)/u', $string, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
return array_filter($split, 'filter');
}
function filter($val) {
if (trim($val) != '') {
return trim($val);
}
return false;
}
function normalize_syllables($syllables){
$new_syll = implode("%",$syllables);
//remove all final stops
$new_syll = preg_replace('/k%space/', 'space', $new_syll);
$new_syll = preg_replace('/k%space/', 'space', $new_syll);
$new_syll = preg_replace('/c%space/', 'space', $new_syll);
$new_syll = preg_replace('/t%space/', 'space', $new_syll);
$new_syll = preg_replace('/th%space/', 'space',$new_syll);
$new_syll = preg_replace('/p%space/', 'space', $new_syll);
//nasal and stop
$new_syll = preg_replace('/%nnn%h/','%nnn%k',$new_syll);
$new_syll = preg_replace('/%l%b/','%l%p',$new_syll);
$new_syll = preg_replace('/%nn%h/','%nn%k',$new_syll);
$new_syll = preg_replace('/%t%h/','%t%k',$new_syll);
$new_syll = preg_replace('/%rr%h/','%rr%k',$new_syll);
$new_syll = preg_replace('/%dhaa%h/','%dhaa%k',$new_syll);
$new_syll = preg_replace('/stospace/','stop%space',$new_syll);
return explode("%",$new_syll);
}
function mergeaudio($myarr){
$audio_file = "";
foreach($myarr as $mp3){
if(!$mfile = file_get_contents($mp3)){
//echo "<font color=red>" . $mp3 . "</font> ";
}else{
$audio_file .= $mfile;
unset($mfile);
//echo $mp3 . " ";
}
}
$fname = random_string(10);
$fname = $fname . ".mp3";
file_put_contents("output/$fname",$audio_file);
return $fname;
}
function url_merge_audio($myarr,$filename){
$audio_file = "";
foreach($myarr as $mp3){
if(!$mfile = file_get_contents($mp3)){
//echo "<font color=red>" . $mp3 . "</font> ";
}else{
$audio_file .= $mfile;
unset($mfile);
//echo $mp3 . " ";
}
}
$space = file_get_contents("tamilsound/space.mp3");
$audio_file .= $space;
file_put_contents($filename,$audio_file,FILE_APPEND);
return $filename;
}
function add_mp3_extension($mp3s){
for($x=0; $x<count($mp3s);$x++){
//add extension and prefix the location of sound files
$mp3s[$x] = "tamilsound/" . $mp3s[$x] . ".mp3";
}
return $mp3s;
}
function get_syllables($word){
$word = str_replace('0','Œ',$word);
$syl = array();
$i = 0;
while($chr = substr_unicode($word,0,1)){
$rem = substr_unicode($word,1);
switch($chr){
case 'அ': $syl[$i++] = "a";
break;
case 'ஆ': $syl[$i++] = "aa";
break;
case 'இ': $syl[$i++] = "i";
break;
case 'ஈ': $syl[$i++] = "ii";
break;
case 'உ': $syl[$i++] = "u";
break;
case 'ஊ': $syl[$i++] = "uu";
break;
case 'எ': $syl[$i++] = "e";
break;
case 'ஏ': $syl[$i++] = "ee";
break;
case 'ஐ': $syl[$i++] = "ai";
break;
case 'ஒ': $syl[$i++] = "o";
break;
case 'ஓ': $syl[$i++] = "oo";
break;
case 'ஔ': $syl[$i++] = 'au';
break;
case 'க': $syl[$i++] = get_syllable("k",$rem);
break;
case 'ங': $syl[$i++] = get_syllable("ng",$rem);
break;
case 'ஞ': $syl[$i++] = get_syllable("nj",$rem);
break;
case 'ச': $syl[$i++] = get_syllable("c",$rem);
break;
case 'ட': $syl[$i++] = get_syllable("t",$rem);
break;
case 'த': $syl[$i++] = get_syllable("th",$rem);
break;
case 'ந': $syl[$i++] = get_syllable("n",$rem);
break;
case 'ன': $syl[$i++] = get_syllable("nn",$rem);
break;
case 'ப': $syl[$i++] = get_syllable("p",$rem);
break;
case 'ம': $syl[$i++] = get_syllable("m",$rem);
break;
case 'ய': $syl[$i++] = get_syllable("y",$rem);
break;
case 'ர': $syl[$i++] = get_syllable("r",$rem);
break;
case 'ல': $syl[$i++] = get_syllable("l",$rem);
break;
case 'வ': $syl[$i++] = get_syllable("v",$rem);
break;
case 'ழ': $syl[$i++] = get_syllable("z",$rem);
break;
case 'ள': $syl[$i++] = get_syllable("ll",$rem);
break;
case 'ற': $syl[$i++] = get_syllable("rr",$rem);
break;
case 'ண': $syl[$i++] = get_syllable("nnn",$rem);
break;
case 'ஜ': $syl[$i++] = get_syllable("j",$rem);
break;
case 'ஷ': $syl[$i++] = get_syllable("sh",$rem);
break;
case 'ஹ': $syl[$i++] = get_syllable("h",$rem);
break;
case 'ஸ': $syl[$i++] = get_syllable("s",$rem);
break;
case 'ஸ்ரீ': $syl[$i++] = "sri";
break;
case 'க்ஷ': $syl[$i++] = get_syllable("ksh",$rem);
break;
default:
if(preg_match("/[.!;?]$/",$chr)){
$syl[$i++] = 'stop';
}elseif(preg_match("/[0-9,Œ:@#]$/", $chr)){
switch($chr){
case '1': $syl[$i++] = 'onru';
break;
case '2': $syl[$i++] = 'irandu';
break;
case '3': $syl[$i++] = 'muunru';
break;
case '4': $syl[$i++] = 'naanku';
break;
case '5': $syl[$i++] = 'ainthu';
break;
case '6': $syl[$i++] = 'aaru';
break;
case '7': $syl[$i++] = 'eezu';
break;
case '8': $syl[$i++] = 'ettu';
break;
case '9': $syl[$i++] = 'onpathu';
break;
case 'Œ': $syl[$i++] = 'saiphar';
break;
}
//ignore punctuations
}elseif($chr == ' '){
$syl[$i++] = 'space';
}
break;
}
$word = substr_unicode($word,1);
}
return soften_stops($syl);
}
function get_syllable($chr,$str){
$let = substr_unicode($str,0,1);
switch($let){
case '்': return $chr; //pure consonant
break;
case 'ா': return $chr . "aa";
break;
case 'ி': return $chr . "i";
break;
case 'ீ': return $chr . "ii";
break;
case 'ு': return $chr . "u";
break;
case 'ூ': return $chr . "uu";
break;
case 'ெ': return $chr . "e";
break;
case 'ே': return $chr . "ee";
break;
case 'ொ': return $chr . "o";
break;
case 'ோ': return $chr . "oo";
break;
case 'ை': return $chr . "ai";
break;
case 'ௌ': return $chr . "au";
break;
}
return $chr . "a";
}
function soften_stops($syllables){
//soften intervocalic and after nasal stop consonants
for($x=0; $x<count($syllables);$x++){
if($x != 0){
if(substr($syllables[$x],0,1) == 'k'){
if(substr($syllables[$x-1],0,2) == 'ng'){
$syllables[$x] = str_replace('k','ng',$syllables[$x]);
}elseif($syllables[$x] != 'k' && $syllables[$x-1] != 'k' && $syllables[$x-1] != 'space'){
$syllables[$x] = str_replace('k','h',$syllables[$x]);
}
}elseif(substr($syllables[$x],0,1) == 'c'){
if($syllables[$x-1] == 'nj'){
$syllables[$x] = str_replace('c','j',$syllables[$x]);
}elseif($syllables[$x] != 'c' && $syllables[$x-1] != 'c' && $syllables[$x-1] != 'space'){
$syllables[$x] = str_replace('c','s',$syllables[$x]);
}
}elseif(substr($syllables[$x],0,2) == 'th'){
if($syllables[$x-1] == 'n'){
$syllables[$x] = str_replace('th','dh',$syllables[$x]);
}elseif($syllables[$x] != 'th' && $syllables[$x-1] != 'th' && $syllables[$x-1] != 'space'){
$syllables[$x] = str_replace('th','dh',$syllables[$x]);
}
}elseif(substr($syllables[$x],0,1) == 't'){
if($syllables[$x-1] == 'nnn'){
$syllables[$x] = str_replace('t','d',$syllables[$x]);
}elseif($syllables[$x] != 't' && $syllables[$x-1] != 't' && $syllables[$x-1] != 'space'){
$syllables[$x] = str_replace('t','d',$syllables[$x]);
}
}elseif(substr($syllables[$x],0,1) == 'p'){
if($syllables[$x-1] == 'm'){
$syllables[$x] = str_replace('p','b',$syllables[$x]);
}elseif($syllables[$x] != 'p' && $syllables[$x-1] != 'p' && $syllables[$x-1] != 'space'){
$syllables[$x] = str_replace('p','b',$syllables[$x]);
}
}
}
}
return $syllables;
}
function random_string($length) {
$key = '';
$keys = array_merge(range(0, 9), range('a', 'z'));
for ($i = 0; $i < $length; $i++) {
$key .= $keys[array_rand($keys)];
}
return $key;
}
function sanitize($string = '', $is_filename = FALSE)
{
// Replace all weird characters with dashes
$string = preg_replace('/[^\w\-'. ($is_filename ? '~_\.' : ''). ']+/u', '-', $string);
// Only allow one dash separator at a time (and make string lowercase)
//strtolower(preg_replace('/--+/u', '-', $string), 'UTF-8');
return $string;
}
?>