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brightcove.module in Brightcove Video Connect 6

Same filename and directory in other branches
  1. 8.2 brightcove.module
  2. 8 brightcove.module
  3. 6.2 brightcove.module
  4. 7.7 brightcove.module
  5. 7.2 brightcove.module
  6. 7.3 brightcove.module
  7. 7.4 brightcove.module
  8. 7.5 brightcove.module
  9. 7.6 brightcove.module
  10. 3.x brightcove.module

Brightcove module is an integration layer between any modules using Brightcove API. It makes all necessary checks for the API and makes settings available to the user.

@author Jakub Suchy <jakub@dynamiteheads.com> Parts of code taken from Media Brightcove module by Aaron Winborn - http://advomatic.com

Module development sponsored by Brightcove, Inc.

File

brightcove.module
View source 
<?php

/*
http://docs.brightcove.com/en/media/
http://support.brightcove.com/en/docs/category/players
http://support.brightcove.com/en/docs/media-api-error-message-reference
http://support.brightcove.com/en/docs/media-api-objects-reference
*/

/**
 * @file
 * Brightcove module is an integration layer between any modules using
 * Brightcove API. It makes all necessary checks for the API and makes
 * settings available to the user.
 *
 * @author
 * Jakub Suchy <jakub@dynamiteheads.com>
 * Parts of code taken from Media Brightcove module by Aaron Winborn - http://advomatic.com
 * 
 * Module development sponsored by Brightcove, Inc.
 */
define('BRIGHTCOVE_STATUS_COMPLETE', 'COMPLETE');
define('BRIGHTCOVE_STATUS_ERROR', 'ERROR');

/**
 * Settings needed:
 *  - API key
 *  - Allow public videos
 */

/**
 * Implementation of hook_menu().
 */
function brightcove_menu() {
  $items['admin/settings/brightcove'] = array(
    'title' => 'Brightcove settings',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'brightcove_admin_settings',
    ),
    'type' => MENU_NORMAL_ITEM,
    'access arguments' => array(
      'administer brightcove settings',
    ),
    'file' => 'brightcove.admin.inc',
  );
  return $items;
}

/**
 * Implementation of hook_perm().
 */
function brightcove_perm() {
  return array(
    'administer brightcove settings',
  );
}
function brightcove_init() {

  // Autoload the BCMAPI class when needed.
  spl_autoload_register('brightcove_autoload');
}

/**
 * Autoload the BCMAPI class when needed.
 */
function brightcove_autoload($class_name) {
  if (in_array($class_name, array(
    'BCMAPI',
    'BCMAPIException',
  ))) {
    include_once brightcove_mapi_path() . '/bc-mapi.php';
  }
}

/**
 * Return the path to the Brightcove MAPI library.
 *
 * If brightcove_variable_get('brightcove_mapi_path') has not yet been set, then
 * this will attempt to autodiscover the path if the bc-mapi.php file exists
 * within sites/all/libraries/* or sites/example.com/libraries/*. It will also
 * set the path to media_brightcove_variable_get('brightcove_mapi_path').
 *
 * The library is available from http://opensource.brightcove.com/project/PHP-MAPI-Wrapper/.
 *
 * @param boolean $reset
 *  (Optional) If TRUE, then reset the variable and attempt a new autodiscovery.
 * @return string
 *  The path to the bc-mapi.php file.
 */
function brightcove_mapi_path($reset = FALSE) {
  static $path;
  if (!isset($path) || $reset) {
    if (!($path = variable_get('brightcove_mapi_path', FALSE)) || $reset) {
      $files = drupal_system_listing('^bc-mapi.php$', 'libraries', 'basename', 0);
      if (isset($files['bc-mapi.php'])) {
        $path = dirname($files['bc-mapi.php']->filename);
        variable_set('brightcove_mapi_path', $path);
      }
    }
  }
  return $path;
}

/**
 * Include all BC MAPI SDK files.
 */
function _brightcove_initialize() {
  $read_token = variable_get('brightcove_read_api_key', '');
  $write_token = variable_get('brightcove_write_api_key', '');
  if (empty($read_token)) {
    drupal_set_message(t('Cannot initialize Brightcove API. Contact site administrators.'));
    watchdog('brightcove', 'Brightcove Read API keys not found, cannot initialize Brightcove MAPI SDK.', array(), WATCHDOG_ERROR);
    return FALSE;
  }
  $bc = new BCMAPI($read_token, $write_token);
  return $bc;
}

/**
 * Check a set of API keys to determine write access to Brightcove Studio.
 * Only customers with Professional and higher accounts have write access.
 *
 * @return
 *  TRUE for write access allowed.
 *  FALSE for write access forbidden.
 */
function brightcove_write_api_access() {
  if (variable_get('brightcove_write_api_key', '')) {
    return TRUE;
  }
  else {
    return FALSE;
  }
}

/**
 * Loads Brightcove video from BC Media API. Uses a 5 minutes cache to speed up lookups.
 *
 * @param $video_id
 * Brightcove Studio video ID.
 * @param $cache
 * TRUE or FALSE. Whether to return a video from cache, if present.
 *
 * @return $video
 * Video object or FALSE if video not found.
 */
function brightcove_video_load($video_id, $cache = TRUE) {
  $cache = cache_get('bc:video:' . $video_id, 'cache');
  $video = $cache->data;
  if (!empty($video->id)) {
    return $video;
  }
  else {
    $bc = _brightcove_initialize();
    try {
      $video = $bc
        ->find('find_video_by_id', $video_id);
    } catch (Exception $error) {
      watchdog('brightcove', 'Loading Brightcove video failed.', array(), WATCHDOG_ERROR);
      return FALSE;
    }
    if (!empty($video->id)) {
      cache_set('bc:video:' . $video_id, $video, 'cache', $_SERVER['REQUEST_TIME'] + 300);
      return $video;
    }
  }
  return FALSE;
}

/**
 * Function that saves a remote image as a local file.
 *
 * @param $url
 * Remote image URL.
 *
 * @return
 * Returns FALSE if image doesn't exist, cannot be saved or is not image (based on extension).
 * Returns local file path if image already exists or was saved correctly.
 */
function brightcove_remote_image($url) {
  $parse = parse_url($url);
  $path = pathinfo($parse['path']);
  $fullpath = file_directory_path() . '/brightcove_thumbnail';
  $final_file = $fullpath . '/' . $path['basename'];
  if (file_exists($final_file)) {
    return $final_file;
  }

  // Perform basic extension check.
  if (!in_array(strtolower($path['extension']), array(
    'jpg',
    'jpeg',
    'png',
    'gif',
  ))) {
    return FALSE;
  }
  if (!file_check_directory($fullpath, FILE_CREATE_DIRECTORY)) {
    return FALSE;
  }
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_HEADER, FALSE);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

  // Causes a warning if PHP safe mode is on.
  @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
  $rawdata = curl_exec($ch);
  if ($fp = @fopen($final_file, 'x')) {
    fwrite($fp, $rawdata);
    fclose($fp);
  }
  return $final_file;
}

/**
 * Implementation of hook_theme().
 */
function brightcove_theme($existing, $type, $theme, $path) {
  return array(
    'brightcove_unavailable_message' => array(
      'arguments' => array(
        'message' => NULL,
      ),
    ),
  );
}
function theme_brightcove_unavailable_message($message) {
  return '<div class="video-unavailable">' . $message . '</div>';
}

/**
 * Will return a default image for videos without a thumbnail or still image.
 */
function brightcove_get_default_image() {
  return drupal_get_path('module', 'brightcove') . '/images/default-image.png';
}

/*
 * Return the status of a specific video.
 *
 * @param string $code
 * The code for the Brightcove video.
 * @param boolean $reset
 * (Optional) If TRUE, then reset the cached status.
 * @return string
 * The status code returned by Brightcove.
 */
function brightcove_status($code, $reset = FALSE) {
  static $status;
  if (!isset($status) || $reset) {
    $status = array();
  }
  if (!isset($status[$code])) {
    if ($cache = cache_get('brightcove:status:' . $code, 'cache')) {
      $status[$code] = $cache->data;
    }
    else {
      $bc = _brightcove_initialize();
      try {

        // Get the status of the desired status.
        $status[$code] = $bc
          ->getStatus('video', $code);
      } catch (BCMAPIException $error) {
        watchdog('brightcove', 'Unhandled error from Brightcove when retrieving the status of video ID %video: %error', array(
          '%video' => $code,
          '%error' => $error
            ->getMessage(),
        ), WATCHDOG_ERROR);
        $status[$code] = 'ERROR';
      }
      cache_set('brightcove:status:' . $code, $status[$code], 'cache', CACHE_TEMPORARY);
    }
  }
  return $status[$code];
}

/**
 * Check if expose unavailability message in case the video is not available.
 *
 * @return
 * Returns a themed message if checks are enabled.
 */
function brightcove_expose_unavailable() {
  if (variable_get('brightcove_check_for_unavailable', TRUE) && ($unavailable_message = variable_get('brightcove_status_display_unavailable', 'This video is unavailable for the moment.'))) {
    return theme('brightcove_unavailable_message', $unavailable_message, $status);
  }
}

/**
 * Implementation of hook_media_mover().
 *
 * Taken from Media Brightcove module by Aaron Winborn - http:/advomatic.com
 * http://drupalcode.org/viewvc/drupal/contributions/modules/media_brightcove/media_brightcove.module?revision=1.1.2.14&content-type=text%2Fplain&view=co&pathrev=DRUPAL-6--1
 *
 * @param $op is the operator to return
 * @param $action is which action is being called
 * @param $verb is the verb being run
 * @param $configuration is the specific configuration saved for the action for this configuration
 * @param $file is the file in use
 * @param $job is the full configuration data currently running
 */
function brightcove_media_mover($op = NULL, $action = NULL, $configuration = NULL, &$file = array(), $job = NULL, $nid = NULL) {
  switch ($op) {
    case 'name':
      return t('Brightcove');
      break;
    case 'actions':
      return array(
        'process' => array(
          1 => t('Upload video to Brightcove.'),
        ),
        'storage' => array(
          2 => t('Upload video to Brightcove.'),
        ),
        'complete' => array(
          3 => t('Attach Brightcove video to a CCK video field'),
        ),
      );
      break;
    case 'complete':
      module_load_include('inc', 'brightcove', 'brightcove.media_mover');
      return brightcove_mm_complete_video($file, $configuration);
      break;
    case 'process':
    case 'storage':
      module_load_include('inc', 'brightcove', 'brightcove.media_mover');
      return brightcove_mm_upload_video($file, $configuration);
      break;
    case 'config':
      switch ($action) {
        case '1':
        case '2':
          module_load_include('inc', 'brightcove', 'brightcove.media_mover');
          return brightcove_mm_config($configuration);
          break;
        case '3':
          module_load_include('inc', 'brightcove', 'brightcove.media_mover');
          return brightcove_mm_complete_config($configuration);
          break;
      }
      break;
  }
}

/**
 * Upload video to Brightcove.
 *
 * @param $path
 * Filepath to video file.
 * @param $meta
 * Meta data array. Required values:
 *     array(
 *       'name' => 'video name',
 *       'shortDescription' => 'short description',
 *     );
 * @see http://support.brightcove.com/en/docs/media-api-objects-reference#Video
 */
function brightcove_upload_video($path, $meta) {
  if (empty($meta['name'])) {
    $meta['name'] = t('Video');
  }
  if (empty($meta['shortDescription'])) {
    $meta['shortDescription'] = t('Short Description');
  }
  $bc = _brightcove_initialize();
  try {
    $id = $bc
      ->createMedia('video', $path, $meta);
  } catch (Exception $error) {
    drupal_set_message(t('Video upload to Brightcove failed. Error: @error', array(
      '@error' => $error,
    )), 'error');
    return;
  }
  return $id;
}

/**
 * Parse a field value in form of "title [id:123]" and return 123
 *
 * @param $id
 *  Video ID in form of "title [id:123]".
 * @return
 *  Int value of the ID.
 */
function brightcove_parse_id($id) {
  preg_match('/\\[id:([^\\[]*)\\]$/', $id, $matches);
  return $matches[1];
}

/**
 * Generate a reference ID based on Drupal version and User ID.
 *
 * @param $account
 * Account UID that is responsible for this video. If NULL, logged in user is used.
 */
function brightcove_generate_reference($account = NULL) {
  global $user;
  if (!isset($account)) {
    $account = $user->uid;
  }
  return "drupal:" . DRUPAL_CORE_COMPATIBILITY . ":" . $account . ":" . md5(microtime());
}

/**
 * Caches the status of a video for faster validation.
 *
 * This function also helps work around the lag in Brightcove API when
 * videos are uploaded.
 *
 * @param $id
 *  The Brightcove identifier for the video.
 *
 * @param $video
 *  The video object to be cached.
 */
function brightcove_video_cache_set($id, $video) {
  if (!isset($_SESSION['brightcove'])) {
    $_SESSION['brightcove'] = array();
  }
  $id = (int) $id;
  $_SESSION['brightcove']["video_{$id}"] = $video;
}

/**
 * Fetches a brighcove video object from the cache, if available.
 *
 * @param
 *  The Brightcove identifier for the video.
 *
 * @return
 *  Object the Brightcove video object.
 */
function brightcove_video_cache_get($id) {
  $id = (int) $id;
  $key = "video_{$id}";
  if ($id && isset($_SESSION['brightcove'][$key])) {
    return $_SESSION['brightcove'][$key];
  }
  return NULL;
}

Functions

Namesort descending Description
brightcove_autoload Autoload the BCMAPI class when needed.
brightcove_expose_unavailable Check if expose unavailability message in case the video is not available.
brightcove_generate_reference Generate a reference ID based on Drupal version and User ID.
brightcove_get_default_image Will return a default image for videos without a thumbnail or still image.
brightcove_init
brightcove_mapi_path Return the path to the Brightcove MAPI library.
brightcove_media_mover Implementation of hook_media_mover().
brightcove_menu Implementation of hook_menu().
brightcove_parse_id Parse a field value in form of "title [id:123]" and return 123
brightcove_perm Implementation of hook_perm().
brightcove_remote_image Function that saves a remote image as a local file.
brightcove_status
brightcove_theme Implementation of hook_theme().
brightcove_upload_video Upload video to Brightcove.
brightcove_video_cache_get Fetches a brighcove video object from the cache, if available.
brightcove_video_cache_set Caches the status of a video for faster validation.
brightcove_video_load Loads Brightcove video from BC Media API. Uses a 5 minutes cache to speed up lookups.
brightcove_write_api_access Check a set of API keys to determine write access to Brightcove Studio. Only customers with Professional and higher accounts have write access.
theme_brightcove_unavailable_message
_brightcove_initialize Include all BC MAPI SDK files.

Constants

Namesort descending Description
BRIGHTCOVE_STATUS_COMPLETE @file Brightcove module is an integration layer between any modules using Brightcove API. It makes all necessary checks for the API and makes settings available to the user.
BRIGHTCOVE_STATUS_ERROR