See Release Notes
Long Term Support Release
Differences Between: [Versions 310 and 401] [Versions 39 and 401]
1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 17 /** 18 * Main class for plugin 'media_html5video' 19 * 20 * @package media_html5video 21 * @copyright 2016 Marina Glancy 22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 23 */ 24 25 defined('MOODLE_INTERNAL') || die(); 26 27 /** 28 * Player that creates HTML5 <video> tag. 29 * 30 * @package media_html5video 31 * @copyright 2016 Marina Glancy 32 * @author 2011 The Open University 33 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 34 */ 35 class media_html5video_plugin extends core_media_player_native { 36 public function embed($urls, $name, $width, $height, $options) { 37 38 if (array_key_exists(core_media_manager::OPTION_ORIGINAL_TEXT, $options) && 39 preg_match('/^<(video|audio)\b/i', $options[core_media_manager::OPTION_ORIGINAL_TEXT], $matches)) { 40 // We already had media tag, do nothing here. 41 return $options[core_media_manager::OPTION_ORIGINAL_TEXT]; 42 } 43 44 // Special handling to make videos play on Android devices pre 2.3. 45 // Note: I tested and 2.3.3 (in emulator) works without, is 533.1 webkit. 46 $oldandroid = core_useragent::is_webkit_android() && 47 !core_useragent::check_webkit_android_version('533.1'); 48 49 // Build array of source tags. 50 $sources = array(); 51 foreach ($urls as $url) { 52 $mimetype = core_media_manager::instance()->get_mimetype($url); 53 if ($mimetype === 'video/quicktime' && (core_useragent::is_chrome() || core_useragent::is_edge())) { 54 // Set mimetype of quicktime videos to mp4 for Chrome/Edge browsers. 55 $mimetype = 'video/mp4'; 56 } 57 $source = html_writer::empty_tag('source', array('src' => $url, 'type' => $mimetype)); 58 if ($mimetype === 'video/mp4') { 59 if ($oldandroid) { 60 // Old Android fails if you specify the type param. 61 $source = html_writer::empty_tag('source', array('src' => $url)); 62 } 63 64 // Better add m4v as first source, it might be a bit more 65 // compatible with problematic browsers. 66 array_unshift($sources, $source); 67 } else { 68 $sources[] = $source; 69 } 70 } 71 72 $sources = implode("\n", $sources); 73 $title = $this->get_name($name, $urls); 74 // Escape title but prevent double escaping. 75 $title = s(preg_replace(['/&/', '/>/', '/</'], ['&', '>', '<'], $title)); 76 77 self::pick_video_size($width, $height); 78 if (!$height) { 79 // Let browser choose height automatically. 80 $size = "width=\"$width\""; 81 } else { 82 $size = "width=\"$width\" height=\"$height\""; 83 } 84 85 $sillyscript = ''; 86 $idtag = ''; 87 if ($oldandroid) { 88 // Old Android does not support 'controls' option. 89 $id = 'core_media_html5v_' . md5(time() . '_' . rand()); 90 $idtag = 'id="' . $id . '"'; 91 $sillyscript = <<<OET 92 <script type="text/javascript"> 93 document.getElementById('$id').addEventListener('click', function() { 94 this.play(); 95 }, false); 96 </script> 97 OET; 98 } 99 100 // We don't want fallback to another player because list_supported_urls() is already smart. 101 // Otherwise we could end up with nested <video> tags. Fallback to link only. 102 $fallback = self::LINKPLACEHOLDER; 103 return <<<OET 104 <span class="mediaplugin mediaplugin_html5video"> 105 <video $idtag controls="true" $size preload="metadata" title="$title"> 106 $sources 107 $fallback 108 </video> 109 $sillyscript 110 </span> 111 OET; 112 } 113 114 public function get_supported_extensions() { 115 global $CFG; 116 require_once($CFG->libdir . '/filelib.php'); 117 return file_get_typegroup('extension', 'html_video'); 118 } 119 120 public function list_supported_urls(array $urls, array $options = array()) { 121 $extensions = $this->get_supported_extensions(); 122 $result = array(); 123 foreach ($urls as $url) { 124 $ext = core_media_manager::instance()->get_extension($url); 125 if (in_array('.' . $ext, $extensions) && core_useragent::supports_html5($ext)) { 126 // Unfortunately html5 video does not handle fallback properly. 127 // https://www.w3.org/Bugs/Public/show_bug.cgi?id=10975 128 // That means we need to do browser detect and not use html5 on 129 // browsers which do not support the given type, otherwise users 130 // will not even see the fallback link. 131 $result[] = $url; 132 } 133 } 134 return $result; 135 } 136 137 /** 138 * Utility function that sets width and height to defaults if not specified 139 * as a parameter to the function (will be specified either if, (a) the calling 140 * code passed it, or (b) the URL included it). 141 * @param int $width Width passed to function (updated with final value) 142 * @param int $height Height passed to function (updated with final value) 143 */ 144 protected static function pick_video_size(&$width, &$height) { 145 global $CFG; 146 if (!$width) { 147 $width = $CFG->media_default_width; 148 } 149 } 150 151 /** 152 * Default rank 153 * @return int 154 */ 155 public function get_rank() { 156 return 50; 157 } 158 }
title
Description
Body
title
Description
Body
title
Description
Body
title
Body