<?php
// $Id$
/**
 * @file
 * FileField Meta: Add Video Support to File Field.
 */

/**
 * Implementation of hook_theme().
 */
function filefield_meta_theme() {
  return array(
    'filefield_meta_duration' => array(
      'arguments' => array('duration' => NULL),
    ),
  );
}

/**
 * Implementation of filefield's hook_file_insert().
 */
function filefield_meta_file_insert(&$file) {
  filefield_meta($file);
  $record = array_merge(array('fid' => $file->fid), $file->data);
  drupal_write_record('filefield_meta', $record);
}

/**
 * Implementation of filefield's hook_file_update().
 */
function filefield_meta_file_update(&$file) {
  filefield_meta_file_delete($file);
  filefield_meta_file_insert($file);
}

/**
 * Implementation of filefield's hook_file_delete().
 */
function filefield_meta_file_delete($file) {
  db_query('DELETE FROM {filefield_meta} WHERE fid = %d', $file->fid);
}

/**
 * Adds the width, height and duration to the file's data property.
 */
function filefield_meta(&$file) {
  $info = getid3_analyze($file->filepath);
  $file->data['width'] = $file->data['height'] = $file->data['duration'] = 0;
  if (isset($info['video']['resolution_x'])) {
    $file->data['width'] = $info['video']['resolution_x'];
    $file->data['height'] = $info['video']['resolution_y'];
  }
  else if (isset($info['video']['streams'])) {
    foreach($info['video']['streams'] as $stream) {
      $file->data['width'] = max($file->data['width'], $stream['resolution_x']);
      $file->data['height'] = max($file->data['height'], $stream['resolution_y']);
    }
  }
  $file->data['duration'] = $info['playtime_seconds'];
};

/**
 * Convert the float druation into a pretty string.
 *
 * @param $duration
 */
function theme_filefield_meta_duration($duration) {
  $seconds = round((($duration / 60) - floor($duration / 60)) * 60);
  $minutes = floor($duration / 60);
  if ($seconds >= 60) {
      $seconds -= 60;
      $minutes++;
  }
  return intval($minutes).':'.str_pad($seconds, 2, 0, STR_PAD_LEFT);
}