Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- video stream
- <?php
- /**
- * Description of VideoStream
- *
- * @author Rana
- * @link http://codesamplez.com/programming/php-html5-video-streaming-tutorial
- */
- class VideoStream
- {
- private $path = "";
- private $stream = "";
- private $buffer = 102400;
- private $start = -1;
- private $end = -1;
- private $size = 0;
- function __construct($filePath)
- {
- $this->path = $filePath;
- }
- /**
- * Open stream
- */
- private function open()
- {
- if (!($this->stream = fopen($this->path, 'rb'))) {
- die('Could not open stream for reading');
- }
- }
- /**
- * Set proper header to serve the video content
- */
- private function setHeader()
- {
- ob_get_clean();
- header("Content-Type: video/mp4");
- header("Cache-Control: max-age=2592000, public");
- header("Expires: ".gmdate('D, d M Y H:i:s', time()+2592000) . ' GMT');
- header("Last-Modified: ".gmdate('D, d M Y H:i:s', @filemtime($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_start = $this->start;
- $c_end = $this->end;
- list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
- if (strpos($range, ',') !== false) {
- header('HTTP/1.1 416 Requested Range Not Satisfiable');
- header("Content-Range: bytes $this->start-$this->end/$this->size");
- exit;
- }
- if ($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 - $this->start + 1;
- fseek($this->stream, $this->start);
- header('HTTP/1.1 206 Partial Content');
- header("Content-Length: ".$length);
- header("Content-Range: bytes $this->start-$this->end/".$this->size);
- }
- else
- {
- header("Content-Length: ".$this->size);
- }
- }
- /**
- * close curretly opened stream
- */
- private function end()
- {
- fclose($this->stream);
- exit;
- }
- /**
- * perform the streaming of calculated range
- */
- private function stream()
- {
- $i = $this->start;
- set_time_limit(0);
- while(!feof($this->stream) && $i <= $this->end) {
- $bytesToRead = $this->buffer;
- if(($i+$bytesToRead) > $this->end) {
- $bytesToRead = $this->end - $i + 1;
- }
- $data = fread($this->stream, $bytesToRead);
- echo $data;
- flush();
- $i += $bytesToRead;
- }
- }
- /**
- * Start streaming video content
- */
- function start()
- {
- $this->open();
- $this->setHeader();
- $this->stream();
- $this->end();
- }
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement