Addons.php
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Admin.php
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Ajax.php
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Assets.php
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Course.php
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Course_Filter.php
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Tutor_List_Table.php
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Tutor_Setup.php
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Upgrader.php
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User.php
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Utils.php
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Video_Stream.php
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Withdraw.php
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Video_Stream.php
131 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Created by PhpStorm. |
| 4 | * User: themeum |
| 5 | * Date: 24/9/18 |
| 6 | * Time: 4:03 PM |
| 7 | */ |
| 8 | |
| 9 | namespace TUTOR; |
| 10 | |
| 11 | if ( ! defined( 'ABSPATH' ) ) |
| 12 | exit; |
| 13 | |
| 14 | |
| 15 | /** |
| 16 | * Class Video_Stream |
| 17 | * @package TUTOR |
| 18 | * |
| 19 | * TUTOR Video Stream Class |
| 20 | * @since v.1.0.0 |
| 21 | */ |
| 22 | |
| 23 | class Video_Stream { |
| 24 | |
| 25 | private $path = ""; |
| 26 | private $stream = ""; |
| 27 | private $buffer = 102400; |
| 28 | private $start = -1; |
| 29 | private $end = -1; |
| 30 | private $size = 0; |
| 31 | |
| 32 | private $videoFormats; |
| 33 | |
| 34 | function __construct($filePath) { |
| 35 | $this->videoFormats = apply_filters('tutor_video_types', array("mp4"=>"video/mp4", "webm"=>"video/webm", "ogg"=>"video/ogg")) ; |
| 36 | $this->path = $filePath; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * Open stream |
| 41 | */ |
| 42 | private function open() { |
| 43 | if (!($this->stream = fopen($this->path, 'rb'))) { |
| 44 | die('Could not open stream for reading'); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Set proper header to serve the video content |
| 50 | */ |
| 51 | private function setHeader() { |
| 52 | ob_get_clean(); |
| 53 | |
| 54 | header("Content-Type: {$this->videoFormats[strtolower(pathinfo($this->path, PATHINFO_EXTENSION))]}"); |
| 55 | header("Cache-Control: max-age=2592000, public"); |
| 56 | header("Expires: ".gmdate('D, d M Y H:i:s', tutor_time()+2592000) . ' GMT'); |
| 57 | header("Last-Modified: ".gmdate('D, d M Y H:i:s', @filemtime($this->path)) . ' GMT' ); |
| 58 | $this->start = 0; |
| 59 | $this->size = filesize($this->path); |
| 60 | $this->end = $this->size - 1; |
| 61 | header("Accept-Ranges: 0-".$this->end); |
| 62 | |
| 63 | if (isset($_SERVER['HTTP_RANGE'])) { |
| 64 | $c_end = $this->end; |
| 65 | list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2); |
| 66 | |
| 67 | if ($range == '-') { |
| 68 | $c_start = $this->size - substr($range, 1); |
| 69 | }else{ |
| 70 | $range = explode('-', $range); |
| 71 | $c_start = $range[0]; |
| 72 | |
| 73 | $c_end = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $c_end; |
| 74 | } |
| 75 | $c_end = ($c_end > $this->end) ? $this->end : $c_end; |
| 76 | if ($c_start > $c_end || $c_start > $this->size - 1 || $c_end >= $this->size) { |
| 77 | header('HTTP/1.1 416 Requested Range Not Satisfiable'); |
| 78 | header("Content-Range: bytes $this->start-$this->end/$this->size"); |
| 79 | exit; |
| 80 | } |
| 81 | $this->start = $c_start; |
| 82 | $this->end = $c_end; |
| 83 | $length = $this->end - $this->start + 1; |
| 84 | header('HTTP/1.1 206 Partial Content'); |
| 85 | header("Content-Length: ".$length); |
| 86 | header("Content-Range: bytes $this->start-$this->end/".$this->size); |
| 87 | header("Accept-Ranges: bytes"); |
| 88 | } |
| 89 | else { |
| 90 | header("Content-Length: ".$this->size); |
| 91 | } |
| 92 | |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * close currently opened stream |
| 97 | */ |
| 98 | private function end() { |
| 99 | fclose($this->stream); |
| 100 | exit; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * perform the streaming of calculated range |
| 105 | */ |
| 106 | private function stream() { |
| 107 | $i = $this->start; |
| 108 | set_time_limit(0); |
| 109 | while(!feof($this->stream) && $i <= $this->end) { |
| 110 | $bytesToRead = $this->buffer; |
| 111 | if(($i+$bytesToRead) > $this->end) { |
| 112 | $bytesToRead = $this->end - $i + 1; |
| 113 | } |
| 114 | //$data = fread($this->stream, $bytesToRead); |
| 115 | $data = @stream_get_contents($this->stream, $bytesToRead, $i); |
| 116 | echo $data; |
| 117 | flush(); |
| 118 | $i += $bytesToRead; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Start streaming tutor video content |
| 124 | */ |
| 125 | function start() { |
| 126 | $this->open(); |
| 127 | $this->setHeader(); |
| 128 | $this->stream(); |
| 129 | $this->end(); |
| 130 | } |
| 131 | } |