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<?php
//$Id$
/*
* @file
* Class file used to store metadata on the video.
*
*/
class video_metadata {
private $metadata;
public function __construct($metadata = null) {
//get our configured transcoder.
if (!isset($metadata))
$metadata = variable_get('vid_metadata', 'flvtool2');
if (!module_load_include('inc', 'video', '/metadata/' . $metadata)) {
$modules = module_list();
foreach ($modules as $module) {
$mobule_files = array();
$module_path = drupal_get_path('module', $module) . '/metadata';
$mobule_files = file_scan_directory($module_path, '^.*\.inc$');
if (is_array($mobule_files)) {
foreach ($mobule_files as $file) {
if ($file->name == $metadata)
require_once $file->filename;
}
}
//
}
}
if (class_exists($metadata)) {
$this->metadata = new $metadata;
} else {
drupal_set_message(t('The metadata is not configured properly.'), 'error');
}
}
public function process($video) {
$command_output = $this->metadata->process($video);
return $command_output;
}
public function admin_settings() {
$form = array();
$form['video_metadata'] = array(
'#type' => 'checkbox',
'#title' => t('Enable Metadata'),
'#default_value' => variable_get('video_metadata', FALSE),
'#description' => t('Metadata is particularly useful in video, where information about its contents (such as transcripts of conversations and text descriptions of its scenes) are not directly understandable by a computer, but where efficient search is desirable.'),
);
$options = $this->_metadata();
$form['vid_metadata'] = array(
'#type' => 'radios',
'#title' => t('Video Metadata'),
'#default_value' => variable_get('vid_metadata', 'flvtool2'),
'#options' => $options['radios'],
'#description' => t('!list', array('!list' => theme('item_list', $options['help']))),
'#prefix' => '<div id="metadata-radios">',
'#suffix' => '</div>',
);
$form = $form + $options['admin_settings'];
$form['video_metadata_dimensions'] = array(
'#type' => 'textarea',
'#title' => t('Selectable Dimensions when uploading videos'),
'#description' => t('Enter one dimension per line as Video Resolutions. Each resolution must be in the form of WxH where W=Width and H=Height in pixels. Example dimensions are 1280x720.'),
'#default_value' => variable_get("video_metadata_dimensions", video_default_dimensions()),
);
return $form;
}
private function _metadata() {
$files = array();
// Lets find our transcoder classes and build our radio options
// We do this by scanning our transcoders folder
$form = array('radios' => array(), 'help' => array(), 'admin_settings' => array());
$path = drupal_get_path('module', 'video') . '/metadata';
$files = file_scan_directory($path, '^.*\.inc$');
// check inside sub modules
$modules = module_list();
foreach ($modules as $module) {
$mobule_files = array();
$module_path = drupal_get_path('module', $module) . '/metadata';
$mobule_files = file_scan_directory($module_path, '^.*\.inc$');
$files = array_merge($files, $mobule_files);
}
foreach ($files as $file) {
if (!module_load_include('inc', 'video', '/metadata/' . $file->name))
require_once $file->filename;
$focus = new $file->name;
$form['radios'][$focus->get_value()] = $focus->get_name();
$form['help'][] = $focus->get_help();
$form['admin_settings'] = $form['admin_settings'] + $focus->admin_settings();
}
return $form;
}
public function admin_settings_validate($form, $form_state) {
return $this->metadata->admin_settings_validate($form, $form_state);
}
}
interface metadata_interface {
public function get_name();
public function get_help();
public function process($video);
public function admin_settings();
public function admin_settings_validate($form, &$form_state);
}
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