<?php
/*
* Name: Handle Video
* Author: velocity37 <velocity37@gmail.com>
* Modified By: Shish <webmaster@shishnet.org>, jgen <jeffgenovy@gmail.com>, im-mi <im.mi.mail.mi@gmail.com>
* License: GPLv2
* Description: Handle FLV, MP4, OGV and WEBM video files.
* Documentation:
* Based heavily on "Handle MP3" by Shish.<br><br>
* FLV: Flash player<br>
* MP4: HTML5 with Flash fallback<br>
* OGV, WEBM: HTML5<br>
* MP4's flash fallback is forced with a bit of Javascript as some browsers won't fallback if they can't play H.264.
* In the future, it may be necessary to change the user agent checks to reflect the current state of H.264 support.<br><br>
* Made possible by:<br>
* <a href='http://getid3.sourceforge.net/'>getID3()</a> - Gets media information with PHP (no bulky FFMPEG API required).<br>
*/
class VideoFileHandler extends DataHandlerExtension {
public function onInitExt(InitExtEvent $event) {
global $config;
if($config->get_int("ext_handle_video_version") < 1) {
if($ffmpeg = shell_exec((PHP_OS == 'WINNT' ? 'where' : 'which') . ' ffmpeg')) {
//ffmpeg exists in PATH, check if it's executable, and if so, default to it instead of static
if(is_executable(strtok($ffmpeg, PHP_EOL))) {
$config->set_default_string('video_thumb_engine', 'ffmpeg');
$config->set_default_string('thumb_ffmpeg_path', 'ffmpeg');
}
} else {
$config->set_default_string('video_thumb_engine', 'static');
$config->set_default_string('thumb_ffmpeg_path', '');
}
// By default we generate thumbnails ignoring the aspect ratio of the video file.
//
// Why? - This allows Shimmie to work with older versions of FFmpeg by default,
// rather than completely failing out of the box. If people complain that their
// thumbnails are distorted, then they can turn this feature on manually later.
$config->set_default_bool('video_thumb_ignore_aspect_ratio', TRUE);
$config->set_int("ext_handle_video_version", 1);
log_info("handle_video", "extension installed");
}
$config->set_default_bool('video_playback_autoplay', TRUE);
$config->set_default_bool('video_playback_loop', TRUE);
}
public function onSetupBuilding(SetupBuildingEvent $event) {
//global $config;
$thumbers = array(
'None' => 'static',
'ffmpeg' => 'ffmpeg'
);
$sb = new SetupBlock("Video Thumbnail Options");
$sb->add_choice_option("video_thumb_engine", $thumbers, "Engine: ");
//if($config->get_string("video_thumb_engine") == "ffmpeg") {
$sb->add_label("<br>Path to ffmpeg: ");
$sb->add_text_option("thumb_ffmpeg_path");
//}
// Some older versions of ffmpeg have trouble with the automatic aspect ratio scaling.
// This adds an option in the Board Config to disable the aspect ratio scaling.
$sb->add_label("<br>");
$sb->add_bool_option("video_thumb_ignore_aspect_ratio", "Ignore aspect ratio when creating thumbnails: ");
$event->panel->add_block($sb);
$sb = new SetupBlock("Video Playback Options");
$sb->add_bool_option("video_playback_autoplay", "Autoplay: ");
$sb->add_label("<br>");
$sb->add_bool_option("video_playback_loop", "Loop: ");
$event->panel->add_block($sb);
}
/**
* Generate the Thumbnail image for particular file.
*
* @param string $hash
* @return bool Returns true on successful thumbnail creation.
*/
protected function create_thumb($hash) {
global $config;
$ok = false;
switch($config->get_string("video_thumb_engine"))
{
default:
case 'static':
$outname = warehouse_path("thumbs", $hash);
copy("ext/handle_video/thumb.jpg", $outname);
$ok = true;
break;
case 'ffmpeg':
$ffmpeg = escapeshellcmd($config->get_string("thumb_ffmpeg_path"));
$w = (int)$config->get_int("thumb_width");
$h = (int)$config->get_int("thumb_height");
$inname = escapeshellarg(warehouse_path("images", $hash));
$outname = escapeshellarg(warehouse_path("thumbs", $hash));
if ($config->get_bool("video_thumb_ignore_aspect_ratio") == true)
{
$cmd = escapeshellcmd("{$ffmpeg} -y -i {$inname} -ss 00:00:00.0 -f image2 -vframes 1 {$outname}");
}
else
{
$scale = 'scale="' . escapeshellarg("if(gt(a,{$w}/{$h}),{$w},-1)") . ':' . escapeshellarg("if(gt(a,{$w}/{$h}),-1,{$h})") . '"';
$cmd = "{$ffmpeg} -y -i {$inname} -vf {$scale} -ss 00:00:00.0 -f image2 -vframes 1 {$outname}";
}
exec($cmd, $output, $returnValue);
if ((int)$returnValue == (int)1)
{
$ok = true;
}
log_debug('handle_video', "Generating thumbnail with command `$cmd`, returns $returnValue");
break;
}
return $ok;
}
/**
* @param string $ext
* @return bool
*/
protected function supported_ext($ext) {
$exts = array("flv", "mp4", "m4v", "ogv", "webm");
return in_array(strtolower($ext), $exts);
}
/**
* @param string $filename
* @param mixed[] $metadata
* @return Image
*/
protected function create_image_from_data($filename, $metadata) {
$image = new Image();
require_once('lib/getid3/getid3/getid3.php');
$getID3 = new getID3;
$ThisFileInfo = $getID3->analyze($filename);
if (isset($ThisFileInfo['video']['resolution_x']) && isset($ThisFileInfo['video']['resolution_y'])) {
$image->width = $ThisFileInfo['video']['resolution_x'];
$image->height = $ThisFileInfo['video']['resolution_y'];
} else {
$image->width = 0;
$image->height = 0;
}
switch ($ThisFileInfo['mime_type']) {
case "video/webm":
$image->ext = "webm";
break;
case "video/quicktime":
$image->ext = "mp4";
break;
case "application/ogg":
$image->ext = "ogv";
break;
case "video/x-flv":
$image->ext = "flv";
break;
}
$image->filesize = $metadata['size'];
$image->hash = $metadata['hash'];
$image->filename = $metadata['filename'];
$image->tag_array = $metadata['tags'];
$image->source = $metadata['source'];
return $image;
}
/**
* @param string $file
* @return bool
*/
protected function check_contents($file) {
if (file_exists($file)) {
require_once('lib/getid3/getid3/getid3.php');
$getID3 = new getID3;
$ThisFileInfo = $getID3->analyze($file);
if (isset($ThisFileInfo['mime_type']) && (
$ThisFileInfo['mime_type'] == "video/webm" ||
$ThisFileInfo['mime_type'] == "video/quicktime" ||
$ThisFileInfo['mime_type'] == "application/ogg" ||
$ThisFileInfo['mime_type'] == 'video/x-flv')
) {
return TRUE;
}
}
return FALSE;
}
}