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changed the readfile.php to some class from teh intwerwebz

Moritz Schmidt преди 10 години
родител
ревизия
3d2840385a
променени са 1 файла, в които са добавени 124 реда и са изтрити 11 реда
  1. 124 11
      readfile.php

+ 124 - 11
readfile.php

@@ -1,18 +1,131 @@
 <?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;
 
-if(!isset($_GET['file']) || !$_GET['file']) {
-    die();
-}
+    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);
+        header('Accept-Ranges: bytes');
+
+        if (isset($_SERVER['HTTP_RANGE'])) {
 
-$mime = explode(';', finfo_file(finfo_open(FILEINFO_MIME), $_GET['file']));
+            $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];
 
-header('Content-Type: ' . $mime[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);
+        }
 
-$handle = fopen($_GET['file'], "r");
-$filesize = filesize($_GET['file']);
-$fs = 2097152; // read 2mb per cycle
-while($fs < $filesize) {
-    echo fread($handle, $fs);
+    }
+
+    /**
+     * close curretly opened stream
+     */
+    private function end()
+    {
+        fclose($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();
+        $this->end();
+    }
 }
-fclose($handle);
+
+
+$stream = new VideoStream($_GET['file']);
+$stream->start();