%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Video Stream
*
* @package Tutor\VideoStream
* @author Themeum <support@themeum.com>
* @link https://themeum.com
* @since 1.0.0
*/
namespace TUTOR;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Class Video_Stream
*
* @since 1.0.0
*/
class Video_Stream {
/**
* Path
*
* @since 1.0.0
*
* @var string
*/
private $path = '';
/**
* Stream
*
* @since 1.0.0
*
* @var string
*/
private $stream = '';
/**
* Buffer time
*
* @since 1.0.0
*
* @var string
*/
private $buffer = 102400;
/**
* Start
*
* @since 1.0.0
*
* @var int
*/
private $start = -1;
/**
* End
*
* @since 1.0.0
*
* @var int
*/
private $end = -1;
/**
* Size
*
* @since 1.0.0
*
* @var int
*/
private $size = 0;
/**
* Video format
*
* @since 1.0.0
*
* @var string
*/
private $video_format;
/**
* Resolve dependencies
*
* @since 1.0.0
*
* @param string $file_path file path.
*/
public function __construct( $file_path ) {
$this->video_format = apply_filters(
'tutor_video_types',
array(
'mp4' => 'video/mp4',
'webm' => 'video/webm',
'ogg' => 'video/ogg',
)
);
$this->path = $file_path;
}
/**
* Open stream
*
* @since 1.0.0
*
* @return void
*/
private function open() {
$this->stream = fopen( $this->path, 'rb' );
if ( ! ( $this->stream ) ) {
die( 'Could not open stream for reading' );
}
}
/**
* Set proper header to serve the video content
*
* @since 1.0.0
*
* @return void
*/
private function set_header() {
ob_get_clean();
header( 'Content-Type: ' . $this->video_format[ strtolower( pathinfo( $this->path, PATHINFO_EXTENSION ) ) ] );
header( 'Cache-Control: max-age=2592000, public' );
header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', tutor_time() + 2592000 ) . ' GMT' );
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', @filemtime( $this->path ) ) . ' GMT' );
$this->start = 0;
$this->size = filesize( $this->path );
$this->end = $this->size - 1;
header( 'Accept-Ranges: 0-' . $this->end );
if ( isset( $_SERVER['HTTP_RANGE'] ) ) {
$c_end = $this->end;
list(, $range) = explode( '=', sanitize_text_field( wp_unslash( $_SERVER['HTTP_RANGE'] ) ), 2 );
if ( '-' == $range ) {
$c_start = $this->size - substr( $range, 1 );
} else {
$range = explode( '-', $range );
$c_start = $range[0];
$c_end = ( isset( $range[1] ) && is_numeric( $range[1] ) ) ? $range[1] : $c_end;
}
$c_end = ( $c_end > $this->end ) ? $this->end : $c_end;
if ( $c_start > $c_end || $c_start > $this->size - 1 || $c_end >= $this->size ) {
header( 'HTTP/1.1 416 Requested Range Not Satisfiable' );
header( "Content-Range: bytes $this->start-$this->end/$this->size" );
exit;
}
$this->start = $c_start;
$this->end = $c_end;
$length = $this->end - $this->start + 1;
header( 'HTTP/1.1 206 Partial Content' );
header( 'Content-Length: ' . $length );
header( "Content-Range: bytes $this->start-$this->end/" . $this->size );
header( 'Accept-Ranges: bytes' );
} else {
header( 'Content-Length: ' . $this->size );
}
}
/**
* Close currently opened stream
*
* @since 1.0.0
*
* @return void
*/
private function end() {
fclose( $this->stream );
exit;
}
/**
* Perform the streaming of calculated range
*
* @since 1.0.0
*
* @return void
*/
private function stream() {
$i = $this->start;
set_time_limit( 0 );
while ( ! feof( $this->stream ) && $i <= $this->end ) {
$bytes_to_read = $this->buffer;
if ( ( $i + $bytes_to_read ) > $this->end ) {
$bytes_to_read = $this->end - $i + 1;
}
$data = @stream_get_contents( $this->stream, $bytes_to_read, $i );
echo wp_kses_post( $data );
flush();
$i += $bytes_to_read;
}
}
/**
* Start streaming tutor video content
*
* @since 1.0.0
*
* @return void
*/
public function start() {
$this->open();
$this->set_header();
$this->stream();
$this->end();
}
}
Zerion Mini Shell 1.0