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module_video.inc.php
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module_video.inc.php
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<?php
/**
* module_video.inc.php
* Module for embedding video elements on a page
*
* Copyright Gottfried Haider, Danja Vasiliev 2010.
* This source code is licensed under the GNU General Public License.
* See the file COPYING for more details.
*/
@require_once('config.inc.php');
require_once('html.inc.php');
require_once('html_parse.inc.php');
require_once('modules.inc.php');
// module glue gets loaded on demand
require_once('util.inc.php');
// module_image.inc.php has more information on what's going on inside modules
// (they can be easier than that one though)
function video_alter_save($args)
{
$elem = $args['elem'];
$obj = &$args['obj'];
if (!elem_has_class($elem, 'video')) {
return false;
}
// parse children elements to find video
$childs = html_parse(elem_val($elem));
$v = false;
foreach ($childs as $c) {
if (elem_tag($c) == 'video') {
$v = $c;
break;
}
}
if (!$v) {
log_msg('warn', 'video_alter_save: no video element found, inner html is '.var_dump_inl($childs));
return false;
}
// autoplay
if (elem_attr($v, 'autoplay') !== NULL) {
$obj['video-autoplay'] = 'autoplay';
} else {
$obj['video-autoplay'] = '';
}
// loop
if (elem_attr($v, 'loop') !== NULL) {
$obj['video-loop'] = 'loop';
} else {
unset($obj['video-loop']);
}
// controls
if (elem_attr($v, 'controls') !== NULL) {
$obj['video-controls'] = 'controls';
} else {
unset($obj['video-controls']);
}
// volume
if (elem_attr($v, 'audio') == 'muted') {
$obj['video-volume'] = '0';
} else {
unset($obj['video-volume']);
}
}
function video_delete_object($args)
{
$obj = $args['obj'];
if (!isset($obj['type']) || $obj['type'] != 'video') {
return false;
}
load_modules('glue');
if (!empty($obj['video-file'])) {
$pn = array_shift(expl('.', $obj['name']));
delete_upload(array('pagename'=>$pn, 'file'=>$obj['video-file'], 'max_cnt'=>1));
}
}
function video_has_reference($args)
{
$obj = $args['obj'];
if (!isset($obj['type']) || $obj['type'] != 'video') {
return false;
}
// symlinks have their referenced files in a different page that's why
// they are not relevant here
if (@is_link(CONTENT_DIR.'/'.str_replace('.', '/', $obj['name']))) {
return false;
}
if (!empty($obj['video-file']) && $obj['video-file'] == $args['file']) {
return true;
} else {
return false;
}
}
function video_alter_render_early($args)
{
$elem = &$args['elem'];
$obj = $args['obj'];
if (!elem_has_class($elem, 'video')) {
return false;
}
// add a css (for viewing as well as editing)
html_add_css(base_url().'modules/video/video.css');
$v = elem('video');
if (empty($obj['video-file'])) {
elem_attr($v, 'src', '');
} else {
// TODO (later): support URLs as well
if (SHORT_URLS) {
elem_attr($v, 'src', base_url().urlencode($obj['name']));
} else {
elem_attr($v, 'src', base_url().'?'.urlencode($obj['name']));
}
}
elem_css($v, 'width', '100%');
elem_css($v, 'height', '100%');
elem_css($v, 'preload', 'preload');
// set some fallback text
if (!empty($obj['video-file']) && !empty($obj['video-file-mime'])) {
elem_val($v, '<div class="video-fallback">You are not seeing the video because your browser does not support '.htmlspecialchars($obj['video-file-mime'], ENT_NOQUOTES, 'UTF-8').'. Consider using a contemporary web browser.</div>');
} else {
elem_val($v, '<div class="video-fallback">You are not seeing the video because your browser does not support it. Consider using a contemporary web browser.</div>');
}
// autoplay
if (!isset($obj['video-autoplay']) || $obj['video-autoplay'] == 'autoplay') {
// autoplay is the default
elem_attr($v, 'autoplay', 'autoplay');
} else {
if (VIDEO_START_ON_CLICK) {
elem_attr($v, 'onclick', 'this.play()');
}
}
// loop
if (!empty($obj['video-loop'])) {
elem_attr($v, 'loop', 'loop');
}
// controls
if (!empty($obj['video-controls'])) {
elem_attr($v, 'controls', 'controls');
}
// volume
if (isset($obj['video-volume']) && $obj['video-volume'] == '0') {
elem_attr($v, 'audio', 'muted');
}
elem_append($elem, $v);
return true;
}
function video_render_object($args)
{
$obj = $args['obj'];
if (!isset($obj['type']) || $obj['type'] != 'video') {
return false;
}
$e = elem('div');
elem_attr($e, 'id', $obj['name']);
elem_add_class($e, 'video');
elem_add_class($e, 'resizable');
elem_add_class($e, 'object');
// hooks
invoke_hook_first('alter_render_early', 'video', array('obj'=>$obj, 'elem'=>&$e, 'edit'=>$args['edit']));
$html = elem_finalize($e);
invoke_hook_last('alter_render_late', 'video', array('obj'=>$obj, 'html'=>&$html, 'elem'=>$e, 'edit'=>$args['edit']));
return $html;
}
function video_render_page_early($args)
{
if ($args['edit']) {
html_add_js(base_url().'modules/video/video-edit.js');
html_add_css(base_url().'modules/video/video-edit.css');
}
}
function video_save_state($args)
{
$elem = $args['elem'];
$obj = $args['obj'];
if (array_shift(elem_classes($elem)) != 'video') {
return false;
}
// make sure the type is set
$obj['type'] = 'video';
$obj['module'] = 'video';
// hook
invoke_hook('alter_save', array('obj'=>&$obj, 'elem'=>$elem));
load_modules('glue');
$ret = save_object($obj);
if ($ret['#error']) {
log_msg('error', 'video_save_state: save_object returned '.quot($ret['#data']));
return false;
} else {
return true;
}
}
function video_serve_resource($args)
{
$obj = $args['obj'];
if (!isset($obj['type']) || $obj['type'] != 'video') {
return false;
}
if (!empty($obj['video-file'])) {
$pn = array_shift(expl('.', $obj['name']));
if (empty($obj['video-file-mime'])) {
$obj['video-file-mime'] = '';
}
serve_file(CONTENT_DIR.'/'.$pn.'/shared/'.$obj['video-file'], $args['dl'], $obj['video-file-mime']);
}
return false;
}
function video_snapshot_symlink($args)
{
$obj = $args['obj'];
if (!isset($obj['type']) || $obj['type'] != 'video') {
return false;
}
$dest_dir = CONTENT_DIR.'/'.array_shift(expl('.', $obj['name'])).'/shared';
$src_file = CONTENT_DIR.'/'.array_shift(expl('.', $args['origin'])).'/shared/'.$obj['video-file'];
if (($f = dir_has_same_file($dest_dir, $src_file)) !== false) {
$obj['video-file'] = $f;
} else {
// copy file
$dest_file = $dest_dir.'/'.unique_filename($dest_dir, $src_file);
$m = umask(0111);
if (!(@copy($src_file, $dest_file))) {
umask($m);
log_msg('error', 'video_snapshot_symlink: error copying referenced file '.quot($src_file).' to '.quot($dest_file));
return false;
}
umask($m);
$obj['video-file'] = basename($dest_file);
log_msg('info', 'video_snapshot_symlink: copied referenced file to '.quot($dest_file));
}
$ret = save_object($obj);
if ($ret['#error']) {
log_msg('error', 'video_snapshot_symlink: error saving object '.quot($obj['name']));
return false;
} else {
return true;
}
}
function video_upload($args)
{
$ext = filext($args['file']);
if ($args['mime'] == 'video/ogg' || $ext == 'ogv' || $ext == 'ogg') {
// notice: we also handle ogg here although this also could be a
// different mime type
// make sure mime type is set
$mime = 'video/ogg';
} elseif ($args['mime'] == 'video/h264' || $ext == 'h264') {
// haven't seen these out there
$mime = 'video/h264';
} elseif ($args['mime'] == 'video/mp4' || $ext == 'mp4') {
// think this need not be h264, but well
$mime = 'video/mp4';
} elseif ($args['mime'] == 'video/webm' || $ext == 'webm') {
// again, webm could also be audio/webm
$mime = 'video/webm';
} else {
return false;
}
load_modules('glue');
$obj = create_object($args);
if ($obj['#error']) {
return false;
} else {
$obj = $obj['#data'];
}
$obj['type'] = 'video';
$obj['module'] = 'video';
$obj['video-file'] = $args['file'];
$obj['video-file-mime'] = $mime;
save_object($obj);
$ret = render_object(array('name'=>$obj['name'], 'edit'=>true));
if ($ret['#error']) {
return false;
} else {
return $ret['#data'];
}
}
?>

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