ampache/lib/class/webplayer.class.php

<?php
/* vim:set softtabstop=4 shiftwidth=4 expandtab: */
/**
 *
 * LICENSE: GNU General Public License, version 2 (GPLv2)
 * Copyright 2001 - 2013 Ampache.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License v2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

class WebPlayer
{
    public static function is_playlist_radio($playlist)
    {
        $radioas = array();

        foreach ($playlist->urls as $item) {
            if ($item->type == "radio") {
                $radios[] = $item;
            }
        }

        return (count($playlist->urls) == 1 && count($radios) > 0 && AmpConfig::get('webplayer_flash'));
    }

    public static function browser_info($agent=null)
    {
        // Declare known browsers to look for
        $known = array('msie', 'trident', 'firefox', 'safari', 'webkit', 'opera', 'netscape', 'konqueror', 'gecko');

        // Clean up agent and build regex that matches phrases for known browsers
        // (e.g. "Firefox/2.0" or "MSIE 6.0" (This only matches the major and minor
        // version numbers.  E.g. "2.0.0.6" is parsed as simply "2.0"
        $agent = strtolower($agent ? $agent : $_SERVER['HTTP_USER_AGENT']);
        $pattern = '#(?<browser>' . join('|', $known) . ')[/ ]+(?<version>[0-9]+(?:\.[0-9]+)?)#';

        // Find all phrases (or return empty array if none found)
        if (!preg_match_all($pattern, $agent, $matches)) return array();

        // Since some UAs have more than one phrase (e.g Firefox has a Gecko phrase,
        // Opera 7,8 have a MSIE phrase), use the last one found (the right-most one
        // in the UA).  That's usually the most correct.
        $i = count($matches['browser'])-1;
        return array($matches['browser'][$i] => $matches['version'][$i]);

    }

    public static function add_media_js($playlist, $callback='addMedia')
    {
        $addjs = "";
        foreach ($playlist->urls as $item) {
            $js = array();
            foreach (array('title', 'author') as $member) {
                if ($member == "author")
                    $kmember = "artist";
                else
                    $kmember = $member;

                $js[$kmember] = addslashes($item->$member);
            }

            $url = $item->url;
            $browsers = array_keys(self::browser_info());
            if (count($browsers) > 0 ) {
                $browser = $browsers[0];
            }
            if ($browser == "msie" || $browser == "trident" || $browser == "webkit" || $browser == "safari") {
                $type = "mp3";
            } else {
                $type = "ogg";
            }

            $ftype = "mp3";
            $urlinfo = Stream_URL::parse($url);
            $transcode = false;
            if ($urlinfo['id']) {
                $song = new Song($urlinfo['id']);
                $ftype = $song->type;

                $js['artist_id'] = $song->artist;
                $js['album_id'] = $song->album;
                $js['song_id'] = $song->id;

                $transcode_cfg = AmpConfig::get('transcode');
                // Check transcode is required
                if ($transcode_cfg == 'always' || $type != $ftype) {
                    $valid_types = Song::get_stream_types_for_type($ftype);
                    if ($transcode_cfg == 'always' || ($transcode_cfg != 'never' && in_array('transcode', $valid_types))) {
                        // Transcode only if excepted type available
                        $transcode_settings = $song->get_transcode_settings($type);
                        if ($transcode_settings) {
                            $transcode = true;
                        } else {
                            if (!in_array('native', $valid_types)) {
                                $transcode_settings = $song->get_transcode_settings(null);
                                if ($transcode_settings) {
                                    $type = $transcode_settings['format'];
                                    $transcode = true;
                                }
                            }
                        }

                    }
                }

                if ($transcode) {
                    $url .= '&transcode_to=' . $type;
                } else {
                    $type = $ftype;
                }
                //$url .= "&content_length=required";
            } else {
                $js['artist_id'] = $song->artist;
                $js['album_id'] = $song->album;
                $js['song_id'] = $song->id;
                $ext = pathinfo($url, PATHINFO_EXTENSION);
                $type = $ext ?: $ftype;
            }

            $jtype = ($type == "ogg" || $type == "flac") ? "oga" : $type;

            $js['filetype'] = $jtype;
            $js['url'] = $url;
            $js['poster'] = $item->image_url . (!$iframed ? '&thumb=4' : '');

            $addjs .= $callback . "(" . json_encode($js) . ");";
        }

        return $addjs;
    }
}