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<?php
/*
* @file
* Transcoder class file to handle ffmpeg settings and conversions.
*/
// Make sure that the parent class is included.
include_once 'video_ffmpeg.inc';
class video_ffmpeg_php extends video_ffmpeg implements transcoder_interface {
// Naming for our radio options. Makes it easy to extend our transcoders.
private $name = 'FFMPEG-PHP (Use ffmpeg-php when possible)';
private $value = 'video_ffmpeg_php';
/**
* Constructor. Just call the parent.
*/
public function __construct() {
parent::__construct();
}
/**
* Load a movie.
*
* @param $videopath
* Video file path.
*
* @return
* An ffmpeg_movie object on success, FALSE otherwise.
*/
private function load_movie($videopath) {
if(!extension_loaded('ffmpeg')) {
$error_msg = t("Extension ffmpeg-php not available.");
watchdog('transcoder', $error_msg, array(), WATCHDOG_ERROR);
return FALSE;
}
return new ffmpeg_movie($videopath);
}
/**
* Generate video thumbs.
*/
public function generate_thumbnails($video) {
global $user;
// Setup our thmbnail path.
$video_thumb_path = variable_get('video_thumb_path', 'videos/thumbnails');
// Get the file system directory.
// @todo : get the field file system settings to this
$schema_thumb_path = file_default_scheme() . '://' . $video_thumb_path . '/' . $video['fid'];
file_prepare_directory($schema_thumb_path, FILE_CREATE_DIRECTORY);
// Total thumbs to generate
$total_thumbs = variable_get('video_thumbs', 5);
$videofile = file_load($video['fid']);
//get the actual video file path from the stream wrappers
$videopath = drupal_realpath($videofile->uri);
//get the playtime from the current transcoder
$duration = $this->get_playtime($videopath);
$files = array();
for ($i = 1; $i <= $total_thumbs; $i++) {
$seek = ($duration / $total_thumbs) * $i - 1; //adding minus one to prevent seek times equaling the last second of the video
$filename = file_munge_filename("video-thumb-" . $video['fid'] . "-$i.jpg", '', TRUE);
$thumbfile = $schema_thumb_path . '/' . $filename;
//skip files already exists, this will save ffmpeg traffic
if (!is_file(drupal_realpath($thumbfile))) {
// Use PHP-FFMPEG
$movie = $this->load_movie($videopath);
if (!$movie) {
return $files;
}
$frames = $movie->getFrameCount();
$fps = $movie->getFrameRate();
// Get the right frame number
$framenumber = (int) $seek * $fps;
if ($framenumber > $frames) {
$framenumber = $frames;
}
// Get the frame and create thumb file
$frame = $movie->getFrame($framenumber);
if (!$frame || !imagejpeg($frame->toGDImage(), drupal_realpath($thumbfile))) {
$error_param = array('%file' => $thumbfile);
$error_msg = t("Error generating thumbnail for video: generated file %file does not exist.", $error_param);
// Log the error message.
watchdog('transcoder', $error_msg, array(), WATCHDOG_ERROR);
continue;
}
}
// Begin building the file object.
// @TODO : use file_munge_filename()
$file = new stdClass();
$file->uid = $user->uid;
$file->status = 0;
$file->filename = trim($filename);
$file->uri = $thumbfile;
$file->filemime = file_get_mimetype($filename);
$file->filesize = filesize(drupal_realpath($thumbfile));
$file->timestamp = time();
$files[] = $file;
}
return $files;
}
/**
* Return the playtime seconds of a video
*/
public function get_playtime($video) {
$movie = $this->load_movie($video);
return (!$movie) ? 0 : $movie->getDuration();
}
/**
* Return the dimensions of a video
*/
public function get_dimensions($video) {
$movie = $this->load_movie($video);
if (!$movie) {
return array(
'width' => 0,
'height' => 0,
);
}
$res['width'] = $movie->getFrameWidth();
$res['height'] = $movie->getFrameHeight();
return $res;
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#get_name()
*/
public function get_name() {
return $this->name;
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#get_value()
*/
public function get_value() {
return $this->value;
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#get_help()
*/
public function get_help() {
return l(t('FFMPEG-PHP Online Manual'), 'http://ffmpeg-php.sourceforge.net/');
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#admin_settings()
*/
public function admin_settings() {
return parent::admin_settings();
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#admin_settings_validate()
*/
public function admin_settings_validate($form, &$form_state) {
return;
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#create_job()
*/
public function create_job($video, $nid) {
return parent::create_job($video, $nid);
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#delete_job()
*/
public function delete_job($video) {
return parent::delete_job($video);
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#load_job()
*/
public function load_job($fid) {
return parent::load_job($fid);
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#load_job_queue()
*/
public function load_job_queue() {
return parent::load_job_queue();
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#load_completed_job()
*/
public function load_completed_job(&$video) {
return parent::load_completed_job($video);
}
}
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