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<?php
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/**
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* @file
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* Extends the MediaReadOnlyStreamWrapper class to handle YouTube videos.
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*/
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/**
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* Create an instance like this:
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* $youtube = new MediaYouTubeStreamWrapper('youtube://v/[video-code]');
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*/
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class MediaYouTubeStreamWrapper extends MediaReadOnlyStreamWrapper {
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protected $base_url = 'http://www.youtube.com/watch';
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static function getMimeType($uri, $mapping = NULL) {
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return 'video/youtube';
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}
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function getOriginalThumbnailPath() {
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$parts = $this->get_parameters();
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$uri = file_stream_wrapper_uri_normalize('youtube://v/' . check_plain($parts['v']));
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$external_url = file_create_url($uri);
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$oembed_url = url('http://www.youtube.com/oembed', array('query' => array('url' => $external_url, 'format' => 'json')));
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$response = drupal_http_request($oembed_url);
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if (!isset($response->error)) {
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$data = drupal_json_decode($response->data);
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return $data['thumbnail_url'];
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}
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else {
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throw new Exception("Error Processing Request. (Error: {$response->code}, {$response->error})");
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return;
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}
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}
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function getLocalThumbnailPath() {
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$parts = $this->get_parameters();
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// There's no need to hide thumbnails, always use the public system rather
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// than file_default_scheme().
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$local_path = 'public://media-youtube/' . check_plain($parts['v']) . '.jpg';
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if (!file_exists($local_path)) {
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$dirname = drupal_dirname($local_path);
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file_prepare_directory($dirname, FILE_CREATE_DIRECTORY | FILE_MODIFY_PERMISSIONS);
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$response = drupal_http_request($this->getOriginalThumbnailPath());
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if (!isset($response->error)) {
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file_unmanaged_save_data($response->data, $local_path, TRUE);
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}
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else {
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@copy($this->getOriginalThumbnailPath(), $local_path);
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}
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}
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return $local_path;
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}
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} |