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<?php
//$Id$
/*
* @file
* Class file used to wrap the transcoder functions.
*
* @todo need more commenting
* - Add Metadata support
* Add autoloading
* # http://stackoverflow.com/questions/3343208/php-class-lazy-loading
* # http://php.net/manual/en/language.oop5.autoload.php
*
*/
class video_transcoder {
private $transcoder;
public function __construct($transcoder = null) {
$this->transcoder = $this->get_instance($transcoder);
}
/**
*
* @param <type> $transcoder
*/
private function get_instance($transcoder = null) {
//get our configured transcoder.
if (!isset($transcoder))
$transcoder = variable_get('vid_convertor', 'video_ffmpeg');
// module_load_include('inc', 'video', '/transcoders/' . $transcoder);
if (!module_load_include('inc', 'video', '/transcoders/' . $transcoder)) {
$modules = module_list();
$files = array();
foreach ($modules as $module) {
$module_path = drupal_get_path('module', $module) . '/transcoders';
$inc_files = file_scan_directory($module_path, '^.*\.inc$');
if (!empty($inc_files))
$files[$module] = $inc_files;
}
// @TODO : add lazy load
foreach ($files as $module => $_files) {
foreach ($_files as $file) {
if ($file->name == $transcoder)
module_load_include('inc', $module, '/transcoders/' . $file->name);
}
}
}
if (class_exists($transcoder)) {
$transcoder_instance = new $transcoder;
$this->transcoder = $transcoder_instance;
return $transcoder_instance;
} else {
drupal_set_message(t('The transcoder is not configured properly.'), 'error');
}
}
public function generate_thumbnails($video) {
return $this->transcoder->generate_thumbnails($video);
}
public function convert_video(&$video) {
module_load_include('inc', 'video', '/includes/preset');
$video_preset = new video_preset();
$presets = $video_preset->properties();
$video->presets = $presets;
$output = $this->transcoder->convert_video($video);
// if successfully converted the video then update the status to publish
if ($output)
// Update our node id to published. We do not do a node_load as it causes editing problems when saving.
db_query("UPDATE {node} SET status=%d WHERE nid=%d", 1, $video->nid);
// If they are using metadata.
// @TODO : add meta data support
// if (variable_get('video_metadata', FALSE)) {
// module_load_include('inc', 'video', '/includes/metadata');
// $metadata = new video_metadata;
// $metadata->process($converted);
// }
return $output;
}
public function admin_settings() {
$form = array();
$options = $this->_transcoders();
$form['vid_convertor'] = array(
'#type' => 'radios',
'#title' => t('Video transcoder'),
'#default_value' => variable_get('vid_convertor', 'video_ffmpeg'),
'#options' => $options['radios'],
'#description' => t('Selecting a video transcoder will help you convert videos and generate thumbnails. !list', array('!list' => theme('item_list', $options['help']))),
'#prefix' => '<div id="transcoder-radios">',
'#suffix' => '</div>',
);
$form = $form + $options['admin_settings'];
return $form;
}
public function admin_settings_validate($form, &$form_state) {
return $this->transcoder->admin_settings_validate($form, $form_state);
}
private function _transcoders() {
// @TODO : think to change this to observer patteren
$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') . '/transcoders';
$files = file_scan_directory($path, '^.*\.inc$');
// check inside sub modules
$modules = module_list();
foreach ($modules as $module) {
$mobule_files = array();
$module_path = drupal_get_path('module', $module) . '/transcoders';
$mobule_files = file_scan_directory($module_path, '^.*\.inc$');
$files = array_merge($files, $mobule_files);
}
foreach ($files as $file) {
if (!module_load_include('inc', 'video', '/transcoders/' . $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();
}
// //we need to move our video/thumbnail fieldsets to the bottom of our form as they are used for each trancoder
// $autothumb = $form['admin_settings']['autothumb'];
// $autoconv = $form['admin_settings']['autoconv'];
// unset($form['admin_settings']['autothumb'], $form['admin_settings']['autoconv']);
// if(!$this->transcoder->is_wsod())
// $form['admin_settings']['autothumb'] = $autothumb;
// $form['admin_settings']['autoconv'] = $autoconv;
return $form;
}
public function get_dimensions($video) {
return $this->transcoder->get_dimensions($video);
}
public function create_job($video) {
return $this->transcoder->create_job($video);
}
public function update_job($video) {
return $this->transcoder->update_job($video);
}
public function delete_job($video) {
return $this->transcoder->delete_job($video);
}
/**
* Load a file based on the file id ($fid)
*
* @param $fid
* Integer of the file id to be loaded.
*/
public function load_job($fid) {
return $this->transcoder->load_job($fid);
}
public function load_job_queue() {
return $this->transcoder->load_job_queue();
}
public function load_completed_job(&$video) {
return $this->transcoder->load_completed_job($video);
}
}
interface transcoder_interface {
public function create_job($video);
public function update_job($video);
public function delete_job($video);
public function load_job($fid);
public function load_job_queue();
public function load_completed_job(&$video);
public function change_status($vid, $status);
public function generate_thumbnails($video);
public function convert_video($video);
public function get_name();
public function get_value();
public function get_help();
public function admin_settings();
public function admin_settings_validate($form, &$form_state);
}
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