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<?php
/**
* Bitrix Framework
* @package bitrix
* @subpackage sender
* @copyright 2001-2017 Bitrix
*/
namespace Bitrix\Sender\Integration\VoxImplant;
/**
* Class SpeechRate
* @package Bitrix\Sender\Integration\VoxImplant
*/
class SpeechRate
{
/** @var string $speedId Speed ID. */
private $speedId;
/** @var string $text Text. */
private $text = '';
/**
* Create instance.
*
* @return static
*/
public static function create()
{
return new static();
}
/**
* SpeechRate constructor.
*/
public function __construct()
{
}
/**
* With speed.
*
* @param string|null $speedId
* @return $this
*/
public function withSpeed($speedId = null)
{
$this->speedId = $speedId;
return $this;
}
/**
* With text.
*
* @param string $text
* @return $this
*/
public function withText($text = '')
{
$this->text = $text;
return $this;
}
/**
* Return speech duration of text.
*
* @return integer
*/
public function getDuration()
{
return strlen($this->text) * $this->getRatioPerChar();
}
private function getRatioPerChar()
{
$rates = self::getList();
$rate = isset($rates[$this->speedId]) ? $rates[$this->speedId] : $rates['medium'];
return self::getBaseInterval() / $rate;
}
/**
* Get list of rates: chars in 30 seconds.
*
* @return array
*/
public static function getList()
{
return array(
'x-slow' => 270,
'slow' => 300,
'medium' => 340,
'fast' => 370,
'x-fast' => 400
);
}
/**
* Get base interval in seconds.
*
* @return integer
*/
public static function getBaseInterval()
{
return 30;
}
}
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