externalvideo: Added support for various media sources

[mahara:mahara.git] / htdocs / blocktype / externalvideo / media_sources / teachertube / mediasource.php

<?php

require_once(dirname(__FILE__) . '/../Media_base.php');

class Media_teachertube implements MediaBase {

    private static $base_url = 'http://www.teachertube.com/';

    private static $default_width  = 485;
    private static $default_height = 300;

    private static $embed_sources  = array(
        array(
            'match' => '#.*teachertube\.com/flvideo/([0-9]+)\.flv.*#',
            'url'   => 'http://www.teachertube.com/skin-p/mediaplayer.swf?file=http://www.teachertube.com/flvideo/$1.flv',
        ),
        array(
            'match' => '#.*teachertube\.com/viewVideo\.php\?video_id=(\d+).*#',
            'url'   => 'http://www.teachertube.com/embed/player.swf?file=http://www.teachertube.com/embedFLV.php?pg=video_$1',
        ),
        array(
            'match' => '#.*http://(www\.)?teachertube\.com/embed/player\.swf\?file=http://(www\.)?teachertube\.com/embedFLV.php\?pg=video_([0-9]+).*#',
            'url'   => 'http://www.teachertube.com/embed/player.swf?file=http://www.teachertube.com/embedFLV.php?pg=video_$3',
        ),
        array(
            'match' => '#.*http://(www\.)?teachertube.com/skin-p/mediaplayer\.swf\?file=http://www.teachertube.com/flvideo/([0-9]+)\.flv.*#',
            'url'   => 'http://www.teachertube.com/skin-p/mediaplayer.swf?file=http://www.teachertube.com/flvideo/$2.flv',
        ),
    );

    public function process_url($input, $width=0, $height=0) {
        $width  = $width  ? (int)$width  : self::$default_width;
        $height = $height ? (int)$height : self::$default_height;

        foreach (self::$embed_sources as $source) {
            if (preg_match($source['match'], $input)) {
                $output = preg_replace($source['match'], $source['url'], $input);
                $result = array(
                    'videoid' => $output,
                    'type'    => 'embed',
                    'width'   => $width,
                    'height'  => $height,
                );
                return $result;
            }
        }
        return false;
    }

    public function validate_url($input) {
        foreach (self::$embed_sources as $source) {
            if (preg_match($source['match'], $input)) {
                return true;
            }
        }
        return false;
    }

    public function get_base_url() {
        return self::$base_url;
    }
}