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<?php

/**
 *
 * This plugin directly handles `mp4`/`mp4` video and `mp3` audio natively in capable browsers
 * 
 * Other formats require a multimedia player to be enabled. The actual supported multimedia types may vary
 * according to the player enabled.
 *
 * @author Stephen Billard (sbillard), Malte Müller (acrylian)
 * @package plugins
 * @subpackage class-video
 */
// force UTF-8 Ø

$plugin_is_filter = 990 | CLASS_PLUGIN;
$plugin_description = gettext('The Zenphoto <em>audio-video</em> handler.');
$plugin_notice = gettext('This plugin must always be enabled to use multimedia content. It supports mp4/m4v video and mp3 audio natively in capable browsers. For more support you should also enable a multimedia player. See the info of the player you use to see how it is configured.');
$plugin_author = "Stephen Billard (sbillard), Malte Müller (acrylian)";
$plugin_category = gettext('Media');

Gallery::addImageHandler('mp4', 'Video');
Gallery::addImageHandler('m4v', 'Video');
Gallery::addImageHandler('m4a', 'Video');
Gallery::addImageHandler('mp3', 'Video');

$option_interface = 'VideoObject_Options';

define('GETID3_INCLUDEPATH', SERVERPATH . '/' . ZENFOLDER . '/' . PLUGIN_FOLDER . '/class-video/getid3/');
require_once(dirname(__FILE__) . '/class-video/getid3/getid3.php');

/**
 * Option class for video objects
 *
 */
class VideoObject_Options {

    function __construct() {
        purgeOption('class-video_mov_w');
        purgeOption('class-video_mov_h');
        purgeOption('class-video_3gp_w');
        purgeOption('class-video_3gp_h');
        purgeOption('class-video_videoalt');
    }

    /**
     * Standard option interface
     *
     * @return array
     */
    function getOptionsSupported() {
        return array(gettext('Watermark default images') => array(
                        'key' => 'video_watermark_default_images',
                        'type' => OPTION_TYPE_CHECKBOX,
                        'order' => 0,
                        'desc' => gettext('Check to place watermark image on default thumbnail images.'))
        );
    }

}

class Video extends Image {

    var $videoalt = array();

    /**
     * Constructor for class-video
     *
     * @param object &$album the owning album
     * @param sting $filename the filename of the image
     * @return Image
     */
    function __construct($album, $filename, $quiet = false) {
        global $_zp_supported_images;
        $msg = false;
        if (!is_object($album) || !$album->exists) {
            $msg = gettext('Invalid video instantiation: Album does not exist');
        } else if (!$this->classSetup($album, $filename) || !file_exists($this->localpath) || is_dir($this->localpath)) {
            $msg = gettext('Invalid video instantiation: file does not exist.');
        }
        if ($msg) {
            $this->exists = false;
            if (!$quiet) {
                trigger_error($msg, E_USER_ERROR);
            }
            return;
        }
        $alts = explode(',', extensionEnabled('class-video_videoalt'));
        foreach ($alts as $alt) {
            $this->videoalt[] = trim(strtolower($alt));
        }
        $this->sidecars = $_zp_supported_images;
        $this->video = true;
        $this->objectsThumb = checkObjectsThumb($this->localpath);

        // This is where the magic happens...
        $album_name = $album->name;
        $this->updateDimensions();

        $new = $this->instantiate('images', array('filename' => $filename, 'albumid' => $this->album->getID()), 'filename', true, empty($album_name));
        if ($new || $this->filemtime != $this->get('mtime')) {
            if ($new)
                $this->setTitle($this->displayname);
            $this->updateMetaData();
            $this->set('mtime', $this->filemtime);
            $this->save();
            if ($new)
                zp_apply_filter('new_image', $this);
        }
    }

    /**
     * Update this object's values for width and height.
     *
     */
    function updateDimensions() {
        global $_zp_multimedia_extension;
        $ext = getSuffix($this->filename);
        $h = $_zp_multimedia_extension->getHeight($this);
        $w = $_zp_multimedia_extension->getWidth($this);
        $this->set('width', $w);
        $this->set('height', $h);
    }

    /**
     * Returns the image file name for the thumbnail image.
     *
     * @param string $path override path
     *
     * @return string
     */
    function getThumbImageFile($path = NULL) {
        global $_zp_gallery;
        if (is_null($path))
            $path = SERVERPATH;
        if (is_null($this->objectsThumb)) {
            $suffix = getSuffix($this->filename);
            switch ($suffix) {
                case "mp3":
                    $img = '/mp3Default.png';
                    break;
                case "mp4": // generic suffix for mp4 stuff - considered video
                    $img = '/mp4Default.png';
                    break;
                case "m4v": // specific suffix for mp4 video
                    $img = '/m4vDefault.png';
                    break;
                case "m4a": // specific suffix for mp4/AAC audio
                    $img = '/m4aDefault.png';
                    break;
                default: // just in case we extend and are lazy...
                    $img = '/multimediaDefault.png';
                    break;
            }
            $imgfile = $path . '/' . THEMEFOLDER . '/' . internalToFilesystem($_zp_gallery->getCurrentTheme()) . '/images' . $img;
            if (!file_exists($imgfile)) { // first check if the theme has adefault image
                $imgfile = $path . '/' . THEMEFOLDER . '/' . internalToFilesystem($_zp_gallery->getCurrentTheme()) . '/images/multimediaDefault.png';
                if (!file_exists($imgfile)) { // if theme has a generic default image use it otherwise use the Zenphoto image
                    $imgfile = $path . "/" . ZENFOLDER . '/' . PLUGIN_FOLDER . '/' . substr(basename(__FILE__), 0, -4) . $img;
                }
            }
        } else {
            $imgfile = ALBUM_FOLDER_SERVERPATH . internalToFilesystem($this->imagefolder) . '/' . $this->objectsThumb;
        }
        return $imgfile;
    }

    /**
     * Get a default-sized thumbnail of this image.
     *
     * @return string
     */
    function getThumb($type = 'image') {
        $ts = getOption('thumb_size');
        if (getOption('thumb_crop')) {
            $crop = true;
            $sw = getOption('thumb_crop_width');
            $sh = getOption('thumb_crop_height');
            list($custom, $cw, $ch, $cx, $cy) = $this->getThumbCropping($ts, $sw, $sh);
        } else {
            $crop = false;
            $sw = $sh = $cw = $ch = $cx = $cy = null;
        }
        $wmt = getOption('Video_watermark');
        if (empty($wmt)) {
            $wmt = getWatermarkParam($this, WATERMARK_THUMB);
        }
        if ($this->objectsThumb == NULL) {
            $mtime = $cx = $cy = NULL;
            $filename = makeSpecialImageName($this->getThumbImageFile());
            if (!getOption('video_watermark_default_images')) {
                $wmt = '!';
            }
        } else {
            $filename = filesystemToInternal($this->objectsThumb);
            $mtime = filemtime(ALBUM_FOLDER_SERVERPATH . '/' . internalToFilesystem($this->imagefolder) . '/' . $this->objectsThumb);
        }
        $args = getImageParameters(array($ts, $sw, $sh, $cw, $ch, $cx, $cy, null, true, $crop, true, $wmt, NULL, NULL), $this->album->name);
        return getImageURI($args, $this->album->name, $filename, $mtime);
    }
    
    /**
     * Returns an array with widht and height the sidecar thumb image
     * 
     * @since ZephotoCMS 1.5.8
     * 
     * @return array
     */
    function getThumbDimensions() {
        if (!is_null($this->thumbdimensions)) {
            return $this->thumbdimensions;
        }
        $imgfile = $this->getThumbImageFile();
        $image = zp_imageGet($imgfile);
        $width = zp_imageWidth($image);
        $height = zp_imageHeight($image);
        return $this->thumbdimensions = array(
                'width' => $width,
                'height' => $height
        );
    }

    /**
     *  Get a custom sized version of this image based on the parameters.
     *
     * @param string $alt Alt text for the url
     * @param int $size size
     * @param int $width width
     * @param int $height height
     * @param int $cropw crop width
     * @param int $croph crop height
     * @param int $cropx crop x axis
     * @param int $cropy crop y axis
     * @param string $class Optional style class
     * @param string $id Optional style id
     * @param bool $thumbStandin set to true to treat as thumbnail
     * @param bool $effects ignored
     * @return string
     */
    function getCustomImage($size, $width, $height, $cropw, $croph, $cropx, $cropy, $thumbStandin = false, $effects = NULL) {
        if ($thumbStandin) {
            $wmt = getOption('Video_watermark');
            if (empty($wmt)) {
                $wmt = getWatermarkParam($this, WATERMARK_THUMB);
            }
        } else {
            $wmt = NULL;
        }
        if ($thumbStandin & 1) {
            $args = array($size, $width, $height, $cropw, $croph, $cropx, $cropy, NULL, $thumbStandin, NULL, $thumbStandin, NULL, NULL, NULL);
            if ($this->objectsThumb == NULL) {
                $filename = makeSpecialImageName($this->getThumbImageFile());
                if (!getOption('video_watermark_default_images')) {
                    $args[11] = '!';
                }
                $mtime = NULL;
            } else {
                $filename = filesystemToInternal($this->objectsThumb);
                $mtime = filemtime(ALBUM_FOLDER_SERVERPATH . '/' . internalToFilesystem($this->imagefolder) . '/' . $this->objectsThumb);
            }
            return getImageURI($args, $this->album->name, $filename, $this->filemtime);
        } else {
            $args = getImageParameters(array($size, $width, $height, $cropw, $croph, $cropx, $cropy, NULL, $thumbStandin, NULL, $thumbStandin, $wmt, NULL, $effects), $this->album->name);
            $filename = $this->filename;
            return getImageURI($args, $this->album->name, $filename, $this->filemtime);
        }
    }

    /**
     * (non-PHPdoc)
     * @see zp-core/Image::getSizedImage()
     */
    function getSizedImage($size) {
        $width = $this->getWidth();
        $height = $this->getHeight();
        if ($width > $height) { //portrait
            $height = $height * $size / $width;
        } else {
            $width = $width * $size / $height;
        }
        return $this->getContent($width, $height);
    }

    /**
     * returns URL to the original image or to a high quality alternate
     * e.g. ogg, avi, wmv files that can be handled by the client browser
     *
     * @param unknown_type $path
     */
    function getFullImageURL() {
        // Search for a high quality version of the video
        if ($vid = parent::getFullImageURL()) {
            $folder = ALBUM_FOLDER_SERVERPATH . internalToFilesystem($this->album->getFileName());
            $video = stripSuffix($this->filename);
            $curdir = getcwd();
            chdir($folder);
            $candidates = safe_glob($video . '.*');
            chdir($curdir);
            foreach ($candidates as $target) {
                $ext = getSuffix($target);
                if (in_array($ext, $this->videoalt)) {
                    $vid = stripSuffix($vid) . '.' . substr(strrchr($target, "."), 1);
                }
            }
        }
        return $vid;
    }

    /**
     * returns the content of the vido
     *
     * @param $w
     * @param $h
     * @return string
     */
    function getContent($w = NULL, $h = NULL) {
        global $_zp_multimedia_extension;
        if (is_null($w))
            $w = $this->getWidth();
        if (is_null($h))
            $h = $this->getHeight();
        $ext = getSuffix($this->getFullImage());
        return $_zp_multimedia_extension->getPlayerConfig($this, NULL, NULL, $w, $h);
    }

    /**
     *
     * "video" metadata support function
     */
    private function getMetaDataID3() {
        $suffix = getSuffix($this->localpath);
        if (in_array($suffix, array('m4a', 'm4v', 'mp3', 'mp4'))) {
            $getID3 = new getID3;
            @set_time_limit(30);
            $ThisFileInfo = $getID3->analyze($this->localpath);
            getid3_lib::CopyTagsToComments($ThisFileInfo);
            // output desired information in whatever format you want
            if (is_array($ThisFileInfo)) {
                return $ThisFileInfo;
            }
        }
        return NULL; // don't try to cover other files even if getid3 reads images as well
    }

    /**
     * Processes multi-media file metadata
     * (non-PHPdoc)
     * @see zp-core/Image::updateMetaData()
     */
    function updateMetaData() {
        global $_zp_exifvars;
        parent::updateMetaData();
        //see if there are any "enabled" VIDEO fields
        $process = array();
        foreach ($_zp_exifvars as $field => $exifvar) {
            if ($exifvar[5] && $exifvar[0] == 'VIDEO') {
                $process[$field] = $exifvar;
            }
        }
        if (!empty($process)) {
            $ThisFileInfo = $this->getMetaDataID3();
            if (is_array($ThisFileInfo)) {
                foreach ($ThisFileInfo as $key => $info) {
                    if (is_array($info)) {
                        switch ($key) {
                            case 'comments':
                                foreach ($info as $key1 => $data) {
                                    $ThisFileInfo[$key1] = array_shift($data);
                                }
                                break;
                            case 'audio':
                            case 'video':
                                foreach ($info as $key1 => $data) {
                                    $ThisFileInfo[$key1] = $data;
                                }
                                break;
                            case 'error':
                                $msg = sprintf(gettext('getid3 exceptions for %1$s::%2$s'), $this->album->name, $this->filename);
                                foreach ($info as $data) {
                                    $msg .= "\n" . $data;
                                }
                                debugLog($msg);
                                break;
                            default:
                                //discard, not used
                                break;
                        }
                        unset($ThisFileInfo[$key]);
                    }
                }
                foreach ($process as $field => $exifvar) {
                    if (isset($ThisFileInfo[$exifvar[1]])) {
                        $data = $ThisFileInfo[$exifvar[1]];
                        if (!empty($data)) {
                            $this->set($field, $data);
                            $this->set('hasMetadata', 1);
                        }
                    }
                }
                $title = $this->get('VideoTitle');
                if (!empty($title)) {
                    $this->setTitle($title);
                }
            }
        }
    }


}

class pseudoPlayer {

    public $name = '';
    private $width = 480;
    private $height = 360;

    function getWidth($dummy) {
        return $this->width;
    }

    function getHeight($dummy) {
        return $this->height;
    }

    function getPlayerConfig($obj, $movietitle = NULL, $count = NULL) {
        $movie = $obj->getFullImage(FULLWEBPATH);
        $suffix = getSuffix($movie);
        $poster =  $obj->getCustomImage(null, $obj->getWidth(), $obj->getHeight(), $obj->getWidth(), $obj->getHeight(), null, null, true);
        $content = '';
        switch ($suffix) {
            case 'mp4':
            case 'm4v':
                $content = '<video poster="' . html_encode($poster) . '" src="' . html_encode($movie) . '" controls width="100%">';
                $content .= gettext('Your browser sadly does not support this video format.');
                $content .= '</video>';
                break;
            case 'm4a':
            case 'mp3':
                $content = '<audio src="' . html_encode($movie) . '" controls>';
                $content .= gettext('Your browser sadly does not support this audio format.');
                $content .= '</audio>';
                break;
        }
        if (empty($content)) {
            return '<img src="' . WEBPATH . '/' . ZENFOLDER . '/images/err-noflashplayer.png" alt="' . gettext('No multimedia extension installed for this format.') . '" />';
        }
        return $content;
    }

}

$_zp_multimedia_extension = new pseudoPlayer();