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<?php |
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namespace Iman\Streamer; |
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class VideoStreamer |
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{ |
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private $path = ''; |
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private $stream = ''; |
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private $buffer = 102400; |
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private $start = -1; |
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private $end = -1; |
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private $size = 0; |
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private $mime = ''; |
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public function __construct($filePath, $stream) |
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{ |
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$this->path = $filePath; |
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$this->stream = $stream; |
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$this->mime = mime_content_type($filePath); |
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} |
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/** |
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* Set proper header to serve the video content. |
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*/ |
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private function setHeader() |
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{ |
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ob_get_clean(); |
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header('Content-Type: '.$this->mime); |
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header('Cache-Control: max-age=2592000, public'); |
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header('Expires: '.gmdate('D, d M Y H:i:s', time() + 2592000).' GMT'); |
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header('Last-Modified: '.gmdate('D, d M Y H:i:s', @filemtime($this->path)).' GMT'); |
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$this->start = 0; |
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$this->size = filesize($this->path); |
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$this->end = $this->size - 1; |
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header('Accept-Ranges: 0-'.$this->end); |
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if (! isset($_SERVER['HTTP_RANGE'])) { |
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header('Content-Length: '.$this->size); |
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return; |
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} |
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$c_end = $this->end; |
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[ |
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, |
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$range, |
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] = explode('=', $_SERVER['HTTP_RANGE'], 2); |
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if (strpos($range, ',') !== false) { |
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header('HTTP/1.1 416 Requested Range Not Satisfiable'); |
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header("Content-Range: bytes $this->start-$this->end/$this->size"); |
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exit; |
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} |
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if ($range == '-') { |
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$c_start = $this->size - substr($range, 1); |
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} else { |
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$range = explode('-', $range); |
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$c_start = $range[0]; |
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$c_end = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $c_end; |
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} |
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$c_end = ($c_end > $this->end) ? $this->end : $c_end; |
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if ($c_start > $c_end || $c_start > $this->size - 1 || $c_end >= $this->size) { |
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header('HTTP/1.1 416 Requested Range Not Satisfiable'); |
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header("Content-Range: bytes $this->start-$this->end/$this->size"); |
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exit; |
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} |
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$this->start = $c_start; |
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$this->end = $c_end; |
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$length = $this->end - $this->start + 1; |
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fseek($this->stream, $this->start); |
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header('HTTP/1.1 206 Partial Content'); |
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header('Content-Length: ' . $length); |
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header("Content-Range: bytes $this->start-$this->end/" . $this->size); |
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} |
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/** |
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* close curretly opened stream |
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*/ |
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private function end() |
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{ |
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fclose($this->stream); |
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exit; |
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} |
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/** |
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* perform the streaming of calculated range. |
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*/ |
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private function stream() |
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{ |
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$i = $this->start; |
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set_time_limit(0); |
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while (!feof($this->stream) && $i <= $this->end) { |
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$bytesToRead = $this->buffer; |
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if (($i + $bytesToRead) > $this->end) { |
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$bytesToRead = $this->end - $i + 1; |
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} |
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$data = fread($this->stream, $bytesToRead); |
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echo $data; |
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flush(); |
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$i += $bytesToRead; |
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} |
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} |
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111
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112
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/** |
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* Start streaming video content. |
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*/ |
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115
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public function start() |
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{ |
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$this->setHeader(); |
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$this->stream(); |
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$this->end(); |
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} |
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public static function streamFile($path) |
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123
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{ |
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$stream = fopen($path, 'rb'); |
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if (! $stream) { |
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throw new \Exception('File not found in: '.$path, 6542); |
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} |
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129
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(new static($path, $stream))->start(); |
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130
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} |
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131
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} |
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imanghafoori1 /
laravel-video
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