video_google.module in Video 5

Enable Google Video support for video module.

@author Fabio Varesano <fvaresano at yahoo dot it>

File

types/video_google/video_google.module

<?php

// ex: set tabstop=2 expandtab shiftwidth=2 softtabstop=2:

/**
 * @file
 * Enable Google Video support for video module.
 *
 * @author Fabio Varesano <fvaresano at yahoo dot it>
 */

/**
 * Implementation of hook_menu
*/
function video_google_menu($maycache) {
  $items = array();
  if ($maycache) {
    $items[] = array(
      'path' => 'node/add/video/google',
      'title' => t('Google'),
      'access' => user_access('create video'),
    );
  }
  return $items;
}

/**
 * Implementation of hook_v_help
*/
function video_google_v_help() {
  $help = array();
  $help['google']['data'] = '<b><a href="http://video.google.com" name="video_google">' . t('Google Video support') . '</a></b>';
  $help['google']['children'] = array(
    t('You can host videos on video.google.com and put them on your site.
  To do this, after you upload the video on Google video you just have to get the URL of the video.'),
  );
  return $help;
}

/**
 * Implementation of hook_v_info()
*/
function video_google_v_info() {
  $info['google'] = array(
    '#name' => 'Google Video',
    '#description' => t('Post a video available on !link to this website.', array(
      '!link' => l(t('Google Video'), 'http://video.google.com'),
      NULL,
      NULL,
      NULL,
      TRUE,
    )),
    '#autothumbable' => true,
    '#autoresolution' => true,
    '#autoplaytime' => false,
  );
  return $info;
}

/**
 * Implementation of hook_v_form()
*/
function video_google_v_form(&$node, &$form) {
  $form['video']['vidfile'] = array(
    '#type' => 'textfield',
    '#title' => t('Google Video URL'),
    '#default_value' => $node->vidfile,
    '#maxlength' => 700,
    '#required' => TRUE,
    '#weight' => -20,
    '#description' => t('Insert the URL to the google video. ') . l(t('More information.'), 'video/help', NULL, NULL, 'videofile'),
  );
  return $form;
}

/**
 * implementation of hook_v_validate
*/
function video_google_v_validate($node) {

  // TODO: use youtube REST or XML-RPC to query youtube: check video available and embeddable
  if (!preg_match("/^http:\\/\\/video\\.google\\.com\\/videoplay\\?docid=/", $node->vidfile)) {
    form_set_error('vidfile', t('The Google Video URL field must be similar to <em>http://video.google.com/videoplay?docid=1806507480014945777</em>'));
  }
  else {

    //get the video id
    $id = _video_google_get_id($node->vidfile);
    $response = _video_apiclient_google_request($id);
    if (count($response) == 0) {

      // google video wasn't able to find the video
      form_set_error('vidfile', t('The system was not able to find this video on Google Video. Please check the URL of your Google video.'));
    }
  }
}

/**
 * Implementation of hook_v_play
*/
function video_google_v_play($node) {
  return theme('video_google_play', $node);
}

/** AUTOTHUMBNAILING LOGIC */
define('VIDEO_GOOGLE_XML', 'http://video.google.com/videofeed');
function _video_apiclient_google_request($id, $cacheable = TRUE) {
  $args = array(
    'docid' => $id,
  );
  return _video_apiclient_request_xml('google', VIDEO_GOOGLE_XML, $args, $cacheable);
}
function _video_apiclient_google_get_thumbnail_url($id) {
  $xml = _video_apiclient_google_request($id);

  // we *should* be able to use media:thumbnail
  // but unfortunately, that is stripped out from the request hook
  // so instead, we'll parse it from the description, where it's repeated.
  // TODO: look into how to fix this...
  $desc = $xml['ITEM']['DESCRIPTION'][0];
  $regex = '@<img src="([^"]*)"@';
  if (preg_match($regex, $desc, $matches)) {
    return $matches[1];
  }
  return null;
}

/**
 * Implementation of hook_v_auto_thumbnail
*/
function video_google_v_auto_thumbnail($node) {
  if (count($_POST)) {
    if ($_POST['vidfile'] == $node->vidfile) {
      _video_image_thumbnail_debug(t('No new video to thumbnail'));
      return NULL;
    }
    if ($_POST['tempimage']['fids']['_original']) {
      _video_image_thumbnail_debug(t('Video already thumbnailed'));
      return NULL;
    }
  }

  // let's include apiclient logic

  //get the video id
  if (!$node->vidfile && count($_POST)) {
    $vidfile = $_POST['vidfile'];
  }
  else {
    $vidfile = $node->vidfile;
  }
  $id = _video_google_get_id($vidfile);

  // get thumbnail url
  $thumbnail_url = _video_apiclient_google_get_thumbnail_url($id);
  return _video_image_get_thumb_file_object($thumbnail_url, $id);
}

/**
 * Implementation of hook_v_auto_resolution
*/
function video_google_v_auto_resolution(&$node) {

  // we set google videos to 400x326 by default
  return array(
    400,
    326,
  );
}

/** THEMEABLE FUNCTIONS */

/**
 * Play videos hosted on video.google.com
 * Allows users to host videos on video.google.com and then use the video ID to post it in the module.
 *
 * @param $node
 *   object with node information
 *
 * @return
 *   string of content to display
 */
function theme_video_google_play($node) {
  $width = $node->video_scaled_x ? $node->video_scaled_x : '425';
  $height = $node->video_scaled_y ? $node->video_scaled_y : '350';

  // Strip heading "google:"
  $videoid = _video_google_get_id(check_plain($node->vidfile));

  //$videoid = substr($node->vidfile, 7);

  // this will be executed by not Internet Explorer browsers
  $output = '<!--[if !IE]> <-->
<object type="application/x-shockwave-flash" width="' . $width . '" height="' . $height . '"
data="http://video.google.com/googleplayer.swf?docId=' . check_plain($videoid) . '">
<!--> <![endif]-->' . "\n";

  // this will be executed by Internet Explorer
  $output .= '<!--[if IE]>
<object type="application/x-shockwave-flash" width="' . $width . '" height="' . $height . '"
classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0">
<![endif]-->' . "\n";

  // params will be passed to both IE or not IE browsers
  $output .= '<param name="movie" value="http://video.google.com/googleplayer.swf?docId=' . check_plain($videoid) . '" />' . "\n";

  // following a list of params simply copied from old embed tag params. I don't know if this are really needed.
  $output .= '<param name="quality" value="best" />
  <param name="bgcolor" value="#ffffff" />
  <param name="allowScriptAccess" value="sameDomain" />
  <param name="scale" value="noScale" />
  <param name="wmode" value="transparent" />
  <param name="salign" value="TL" />
  <param name="FlashVars" value="playerMode=embedded" />' . _video_get_parameters($node) . '<p>' . t('Your browser is not able to display this multimedia content.') . '</p>
</object>';
  $output = theme('video_format_play', $output, t('http://video.google.com/support'), t('Link to video.google.com'), t('video.google.com'));
  return $output;
}

/** HELPER FUNCTIONS */

/**
 * Get the docid from an URL
*/
function _video_google_get_id($url) {
  $pattern = '/-?[0-9]+/';

  // maybe too weak? some id have a leading -
  preg_match_all($pattern, $url, $matches, PREG_PATTERN_ORDER);
  return $matches[0][0];
}
require_once drupal_get_path('module', 'video') . '/includes/apiclient.inc';

Functions

Name	Description
theme_video_google_play	Play videos hosted on video.google.com Allows users to host videos on video.google.com and then use the video ID to post it in the module.
video_google_menu	Implementation of hook_menu
video_google_v_auto_resolution	Implementation of hook_v_auto_resolution
video_google_v_auto_thumbnail	Implementation of hook_v_auto_thumbnail
video_google_v_form	Implementation of hook_v_form()
video_google_v_help	Implementation of hook_v_help
video_google_v_info	Implementation of hook_v_info()
video_google_v_play	Implementation of hook_v_play
video_google_v_validate	implementation of hook_v_validate
_video_apiclient_google_get_thumbnail_url
_video_apiclient_google_request
_video_google_get_id	Get the docid from an URL

Constants

Name	Description
VIDEO_GOOGLE_XML	AUTOTHUMBNAILING LOGIC