Php Sonata Media中的自定义YouTube提供商

我想为索纳塔媒体创建自定义YouTubeProvider。我的文件看起来像：

src/Application/Sonata/MediaBundle/Provider/YouTubeCustomProvider.php

<?php

namespace Application\Sonata\MediaBundle\Provider;

use Sonata\MediaBundle\Model\MediaInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Gaufrette\Filesystem;
use Sonata\MediaBundle\CDN\CDNInterface;
use Sonata\MediaBundle\Generator\GeneratorInterface;
use Buzz\Browser;
use Sonata\MediaBundle\Thumbnail\ThumbnailInterface;
use Sonata\MediaBundle\Metadata\MetadataBuilderInterface;
use Sonata\MediaBundle\Provider\YouTubeProvider;

class YouTubeCustomProvider extends YouTubeProvider
{

/* @var boolean */
protected $html5;

/**
 * @param string                                                $name
 * @param \Gaufrette\Filesystem                                 $filesystem
 * @param \Sonata\MediaBundle\CDN\CDNInterface                  $cdn
 * @param \Sonata\MediaBundle\Generator\GeneratorInterface      $pathGenerator
 * @param \Sonata\MediaBundle\Thumbnail\ThumbnailInterface      $thumbnail
 * @param \Buzz\Browser                                         $browser
 * @param \Sonata\MediaBundle\Metadata\MetadataBuilderInterface $metadata
 * @param boolean                                               $html5
 */
public function __construct($name, Filesystem $filesystem, CDNInterface $cdn, GeneratorInterface $pathGenerator, ThumbnailInterface $thumbnail, Browser $browser, MetadataBuilderInterface $metadata = null, $html5 = false)
{
    parent::__construct($name, $filesystem, $cdn, $pathGenerator, $thumbnail, $browser, $metadata);
    $this->html5 = $html5;
}

/**
 * {@inheritdoc}
 */
public function getHelperProperties(MediaInterface $media, $format, $options = array())
{

    // Override html5 value if $options['html5'] is a boolean
    if (!isset($options['html5'])) {
        $options['html5'] = $this->html5;
    }

    // documentation : http://code.google.com/apis/youtube/player_parameters.html

    $default_player_url_parameters = array(

        //Values: 0 or 1. Default is 1. Sets whether the player should load related
        // videos once playback of the initial video starts. Related videos are
        // displayed in the "genie menu" when the menu button is pressed. The player
        // search functionality will be disabled if rel is set to 0.
        'rel'               => 0,

        // Values: 0 or 1. Default is 0. Sets whether or not the initial video will autoplay
        // when the player loads.
        'autoplay'          => 0,

        // Values: 0 or 1. Default is 0. In the case of a single video player, a setting of 1
        // will cause the player to play the initial video again and again. In the case of a
        // playlist player (or custom player), the player will play the entire playlist and
        // then start again at the first video.
        'loop'              => 0,

        // Values: 0 or 1. Default is 0. Setting this to 1 will enable the Javascript API.
        // For more information on the Javascript API and how to use it, see the JavaScript
        // API documentation.
        'enablejsapi'       => 0,

        // Value can be any alphanumeric string. This setting is used in conjunction with the
        // JavaScript API. See the JavaScript API documentation for details.
        'playerapiid'    => null,

        // Values: 0 or 1. Default is 0. Setting to 1 will disable the player keyboard controls.
        // Keyboard controls are as follows:
        //      Spacebar: Play / Pause
        //      Arrow Left: Jump back 10% in the current video
        //      Arrow Right: Jump ahead 10% in the current video
        //      Arrow Up: Volume up
        //      Arrow Down: Volume Down
        'disablekb'      => 0,

        // Values: 0 or 1. Default is 0. Setting to 1 enables the "Enhanced Genie Menu". This
        // behavior causes the genie menu (if present) to appear when the user's mouse enters
        // the video display area, as opposed to only appearing when the menu button is pressed.
        'egm'               => 0,

        // Values: 0 or 1. Default is 0. Setting to 1 enables a border around the entire video
        // player. The border's primary color can be set via the color1 parameter, and a
        // secondary color can be set by the color2 parameter.
        'border' => 0,

        // Values: Any RGB value in hexadecimal format. color1 is the primary border color, and
        // color2 is the video control bar background color and secondary border color.
        'color1'            => null,
        'color2'            => null,

        // Values: 0 or 1. Default is 0. Setting to 1 enables the fullscreen button. This has no
        // effect on the Chromeless Player. Note that you must include some extra arguments to
       // your embed code for this to work.
        'fs'             => 1,

        // Values: A positive integer. This parameter causes the player to begin playing the video
        // at the given number of seconds from the start of the video. Note that similar to the
        // seekTo function, the player will look for the closest keyframe to the time you specify.
        // This means sometimes the play head may seek to just before the requested time, usually
        // no more than ~2 seconds
        'start'             => 0,

        // Values: 0 or 1. Default is 0. Setting to 1 enables HD playback by default. This has no
        // effect on the Chromeless Player. This also has no effect if an HD version of the video
        // is not available. If you enable this option, keep in mind that users with a slower
        // connection may have an sub-optimal experience unless they turn off HD. You should ensure
        // your player is large enough to display the video in its native resolution.
        'hd'                => 1,

        // Values: 0 or 1. Default is 1. Setting to 0 disables the search box from displaying when
        // the video is minimized. Note that if the rel parameter is set to 0 then the search box
        // will also be disabled, regardless of the value of showsearch.
        'showsearch'        => 0,

        // Values: 0 or 1. Default is 1. Setting to 0 causes the player to not display information
        // like the video title and rating before the video starts playing.
        'showinfo'          => 0,

        // Values: 1 or 3. Default is 1. Setting to 1 will cause video annotations to be shown by
        // default, whereas setting to 3 will cause video annotation to not be shown by default.
        'iv_load_policy'    => 1,

        // Values: 1. Default is based on user preference. Setting to 1 will cause closed captions
        // to be shown by default, even if the user has turned captions off.
        'cc_load_policy' => 1,

        // Values: 'window' or 'opaque' or 'transparent'.
        // When wmode=window, the Flash movie is not rendered in the page.
        // When wmode=opaque, the Flash movie is rendered as part of the page.
        // When wmode=transparent, the Flash movie is rendered as part of the page.
        'wmode' => 'window'

    );

    $default_player_parameters = array(

        // Values: 0 or 1. Default is 0. Setting to 1 enables a border around the entire video
        // player. The border's primary color can be set via the color1 parameter, and a
        // secondary color can be set by the color2 parameter.
        'border'            => $default_player_url_parameters['border'],

        // Values: 'allowfullscreen' or empty. Default is 'allowfullscreen'. Setting to empty value disables
        //  the fullscreen button.
        'allowFullScreen'   => $default_player_url_parameters['fs'] == '1' ? true : false,

        // The allowScriptAccess parameter in the code is needed to allow the player SWF to call
        // functions on the containing HTML page, since the player is hosted on a different domain
        // from the HTML page.
        'allowScriptAccess' => isset($options['allowScriptAccess']) ? $options['allowScriptAccess'] : 'always',

        // Values: 'window' or 'opaque' or 'transparent'.
        // When wmode=window, the Flash movie is not rendered in the page.
        // When wmode=opaque, the Flash movie is rendered as part of the page.
        // When wmode=transparent, the Flash movie is rendered as part of the page.
        'wmode' => $default_player_url_parameters['wmode']

    );

    $player_url_parameters = array_merge($default_player_url_parameters, isset($options['player_url_parameters']) ? $options['player_url_parameters'] : array());

    $box = $this->getBoxHelperProperties($media, $format, $options);

    $player_parameters = array_merge($default_player_parameters, isset($options['player_parameters']) ? $options['player_parameters'] : array(), array(
        'width' => $box->getWidth(),
        'height' => $box->getHeight()
    ));

    $params = array(
        'html5' => $options['html5'],
        'player_url_parameters' => http_build_query($player_url_parameters),
        'player_parameters' => $player_parameters
    );

    return $params;
}

/**
 * {@inheritdoc}
 */
protected function fixBinaryContent(MediaInterface $media)
{
    if (!$media->getBinaryContent()) {
        return;
    }

    if (preg_match("/(?<=v(\=|\/))([-a-zA-Z0-9_]+)|(?<=youtu\.be\/)([-a-zA-Z0-9_]+)/", $media->getBinaryContent(), $matches)) {
        $media->setBinaryContent($matches[2]);
    }
}

/**
 * {@inheritdoc}
 */
protected function doTransform(MediaInterface $media)
{
    $this->fixBinaryContent($media);

    if (!$media->getBinaryContent()) {
        return;
    }

    $media->setProviderName($this->name);
    $media->setProviderStatus(MediaInterface::STATUS_OK);
    $media->setProviderReference($media->getBinaryContent());

    $this->updateMetadata($media, true);
}

/**
 * {@inheritdoc}
 */
public function updateMetadata(MediaInterface $media, $force = false)
{
    $url = sprintf('http://www.youtube.com/oembed?url=http://www.youtube.com/watch?v=%s&format=json', $media->getProviderReference());

    try {
        $metadata = $this->getMetadata($media, $url);
    } catch (\RuntimeException $e) {
        $media->setEnabled(false);
        $media->setProviderStatus(MediaInterface::STATUS_ERROR);

        return;
    }

    $media->setProviderMetadata($metadata);

    if ($force) {
        $media->setName($metadata['title']);
        $media->setAuthorName($metadata['author_name']);
    }

    $media->setHeight($metadata['height']);
    $media->setWidth($metadata['width']);
    $media->setContentType('video/x-flv');
}

/**
 * {@inheritdoc}
 */
public function getDownloadResponse(MediaInterface $media, $format, $mode, array $headers = array())
{
    return new RedirectResponse(sprintf('http://www.youtube.com/watch?v=%s', $media->getProviderReference()), 302, $headers);
}

}

app/config/config.yml

imports:
    - { resource: @ApplicationSonataMediaBundle/Resources/config/services.yml }    
sonata_media:
        providers:
            image:
                resizer: sonata.media.resizer.square
        default_context: izobrazevanja
        db_driver: doctrine_orm # or doctrine_mongodb, doctrine_phpcr
        contexts:
            default:  # the default context is mandatory
                providers:
                    - sonata.media.provider.dailymotion
                    - sonata.media.provider.youtubecustom
                    - sonata.media.provider.youtube
                    - sonata.media.provider.image
                    - sonata.media.provider.file
                formats:
                    small: { width: 100 , quality: 70}
                    big:   { width: 500 , quality: 70}

        cdn:
            server:
                path: /uploads/media

        filesystem:
            local:
                directory:  %kernel.root_dir%/../web/uploads/media
                create:     false

这些文件不会产生任何错误。我可以添加YouTubeCustom视频，但没有生成缩略图。例如，如果我在文章中选择此视频，则网站会给我一个错误：

FatalErrorException:错误：对/home/smn/dev/site/app/cache/dev/classes.php第15400行中的非对象调用成员函数getBox（）

---

知道怎么回事吗？

为什么要使用自定义提供商？有Youtube提供商。

我想更改一些属性，如“wmode”=>“window”为“不透明”等。

imports:
    - { resource: @ApplicationSonataMediaBundle/Resources/config/services.yml }    
sonata_media:
        providers:
            image:
                resizer: sonata.media.resizer.square
        default_context: izobrazevanja
        db_driver: doctrine_orm # or doctrine_mongodb, doctrine_phpcr
        contexts:
            default:  # the default context is mandatory
                providers:
                    - sonata.media.provider.dailymotion
                    - sonata.media.provider.youtubecustom
                    - sonata.media.provider.youtube
                    - sonata.media.provider.image
                    - sonata.media.provider.file
                formats:
                    small: { width: 100 , quality: 70}
                    big:   { width: 500 , quality: 70}

        cdn:
            server:
                path: /uploads/media

        filesystem:
            local:
                directory:  %kernel.root_dir%/../web/uploads/media
                create:     false