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<?php
//$Id$
/*
* @file
* Transcoder class file to handle ffmpeg_wrapper settings and conversions.
*
*/
class video_ffmpeg_wrapper implements transcoder_interface {
private $name = 'FFmpeg Wrapper';
private $value = 'video_ffmpeg_wrapper';
private $video_ext = 'flv';
protected $thumb_command = '-i !videofile -an -y -f mjpeg -ss !seek -vframes 1 !thumbfile';
public function __construct() {
$this->params['thumb_command'] = variable_get('video_ffmpeg_thumbnailer_options', $this->thumb_command);
}
public function run_command($options) {
watchdog('ffmpeg_wrapper', 'Sending options: '. $options, array(), WATCHDOG_DEBUG);
$output = ffmpeg_wrapper_run_command($options);
if(is_object($output) && ISSET($output->errors)) {
return implode("\n", $output->errors);
}
return $output;
}
public function generate_thumbnails($video) {
global $user;
// Setup our thmbnail path.
$video_thumb_path = variable_get('video_thumb_path', 'video_thumbs');
$final_thumb_path = file_directory_path(). '/' . $video_thumb_path . '/' . $video['fid'];
// Ensure the destination directory exists and is writable.
$directories = explode('/', $final_thumb_path);
// Get the file system directory.
$file_system = file_directory_path();
foreach ($directories as $directory) {
$full_path = isset($full_path) ? $full_path . '/' . $directory : $directory;
// Don't check directories outside the file system path.
if (strpos($full_path, $file_system) === 0) {
field_file_check_directory($full_path, FILE_CREATE_DIRECTORY);
}
}
// Total thumbs to generate
$total_thumbs = variable_get('no_of_video_thumbs', 5);
$videofile = escapeshellarg($video['filepath']);
//get the playtime from the current transcoder
$duration = $this->get_playtime($video);
$files = NULL;
for($i = 1; $i <= $total_thumbs; $i++) {
$seek = ($duration/$total_thumbs) * $i - 1;
$filename = "/video-thumb-for-$fid-$i.jpg";
$thumbfile = $final_thumb_path . $filename;
//skip files already exists, this will save ffmpeg traffic
if (!is_file($thumbfile)) {
//setup the command to be passed to the transcoder.
$options = t($this->params['thumb_command'], array('!videofile' => $videofile, '!seek' => $seek, '!thumbfile' => $thumbfile));
// Generate the thumbnail from the video.
$command_output = $this->run_command($options);
if (!file_exists($thumbfile)) {
$error_param = array('%file' => $thumbfile, '%cmd' => $command, '%out' => $command_output);
$error_msg = t("Error generating thumbnail for video: generated file %file does not exist.<br />Command Executed:<br />%cmd<br />Command Output:<br />%out", $error_param);
// Log the error message.
watchdog('video_transcoder',$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 = FILE_STATUS_TEMPORARY;
$file->filename = trim($filename);
$file->filepath = $thumbfile;
$file->filemime = file_get_mimetype($filename);
$file->filesize = filesize($thumbfile);
$file->timestamp = REQUEST_TIME;
$files[] = $file;
}
return $files;
}
public function video_converted_extension() {
global $conf;
if(isset($conf['ffmpeg_output_type']) && !empty($conf['ffmpeg_output_type'])) {
return $conf['ffmpeg_output_type'];
}
return $this->video_ext;
}
public function convert_video($video, $converted, $dimensions) {
$ffmpeg_object = new stdClass();
// check configuration are pass of then use global $conf
if (empty($params)) {
global $conf;
$params = $conf;
}
// first error check, make sure that we can decode this kind of file
if (!ffmpeg_wrapper_can_decode($video->filepath)) {
$message = 'FFmpeg Wrapper can not decode this file: !file';
$variables = array('!file' => l($video->filepath, file_create_url($video->filepath)));
watchdog('video_render', $message, $variables, WATCHDOG_ERROR);
return false;
}
// did the admin define a specific FFmpeg comand to run?
// we only run what the admin specified
if ($params['ffmpeg_video_custom']) {
$options[] = str_replace(array('%in_file', '%out_file'), array($video->filepath, $converted), $params['ffmpeg_video_custom_command']);
}
// build a standard configuration
else {
// build the ffmpeg command structure out
$options = array();
// input file
$options[] = "-i '". $video->filepath ."'";
// build the watermark config
if ($params['ffmpeg_video_wm']) $options[] = "-vhook '". ffmpeg_wrapper_path_to_vhook('watermark.so') ." -f ". $params['ffmpeg_video_wm_file'] ."'";
// build the audio config
if ($params['ffmpeg_audio_advanced']) {
// use a specifc codec?
if ($params['ffmpeg_audio_acodec']) $options[] = '-acodec '. $params['ffmpeg_audio_acodec'];
// use a specific sample rate?
if ($params['ffmpeg_audio_ar']) $options[] = '-ar '. $params['ffmpeg_audio_ar'];
// use a specific bit rate?
if ($params['ffmpeg_audio_ab']) $options[] = '-ab '. $params['ffmpeg_audio_ab'];
}
//custom sizing per video
$options[] = '-s '. $dimensions;
// build the video config
if ($params['ffmpeg_video_advanced']) {
// is codec set?
if ($params['ffmpeg_video_vcodec']) $options[] = '-vcodec '. $params['ffmpeg_video_vcodec'];
// is the bit rate set?
if ($params['ffmpeg_video_br']) $options[] = '-b '. $params['ffmpeg_video_br'];
// is frame rate set?
if ($params['ffmpeg_video_fps']) $options[] = '-r '. $params['ffmpeg_video_fps'];
}
// implement truncating
if ($params['ffmpeg_time_advanced']) $options[] = '-t '. $params['ffmpeg_time'];
// add the output file
$options[] = "'". $converted ."'";
}
$ffmpeg_object->command = implode(" ", $options);
// run our command and return the output.
return $this->run_command($ffmpeg_object->command);
}
/**
* Return the playtime seconds of a video
*/
public function get_playtime($video) {
$ffmpeg_output = ffmpeg_wrapper_get_file_data($video['filepath']);
return $ffmpeg_output['duration'];
}
/**
* Return the dimensions of a video
*/
public function get_dimensions($video) {
$ffmpeg_output = ffmpeg_wrapper_get_file_data($video);
$res = array('width' => 0,'height' => 0);
if($ffmpeg_output['video']['s']) {
$dimensions = explode("x", $ffmpeg_output['video']['s']);
$res['width'] = $dimensions[0] ? $dimensions[0] : NULL;
$res['height'] = $dimensions[1] ? $dimensions[1] : NULL;
}
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() {
$help = l(t('FFMPEG Wrapper'), 'http://drupal.org/project/ffmpeg_wrapper');
// If the module isn't loaded, show an error next to the link.
if(!module_exists('ffmpeg_wrapper')) {
$help .= ' <span class="error">'.t('You currently do not have this installed.').'</span>';
}
return $help;
}
/**
* Interface Implementations
* @see sites/all/modules/video/includes/transcoder_interface#admin_settings()
*/
public function admin_settings() {
global $conf;
$form = array();
if (!module_exists('ffmpeg_wrapper')) {
$markup = t('You must download and install the !ffmpeg_wrapper to use the FFmpeg Wrapper as a transcoder.', array('!ffmpeg_wrapper' => l(t('FFmpeg Wrapper Module'), 'http://www.drupal.org/project/ffmpeg_wrapper')));
$form['video_wrapper_info'] = array(
'#type' => 'markup',
'#value' => $markup,
'#prefix' => '<div id="'. $this->value .'">',
'#suffix' => '</div>',
);
}
else {
$form['video_ffmpeg_wrapper_start'] = array(
'#type' => 'markup',
'#value' => '<div id="video_ffmpeg_wrapper">',
);
if(module_exists('ffmpeg_wrapper_ui')) {
$ffmpeg_admin_form = ffmpeg_wrapper_ui_configuration_form($conf);
} else if (module_exists('ffmpeg_wrapper')) {
$ffmpeg_admin_form = ffmpeg_wrapper_configuration_form($conf);
}
$form = array_merge($form, $ffmpeg_admin_form['ffmpeg_wrapper']);
$form['video_ffmpeg_wrapper_end'] = array(
'#type' => 'markup',
'#value' => '</div>',
);
}
return $form;
}
}
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