1: <?php
  2: /**
  3:  * Copyright 2011-2014 Horde LLC (http://www.horde.org/)
  4:  *
  5:  * See the enclosed file COPYING for license information (GPL). If you
  6:  * did not receive this file, see http://www.horde.org/licenses/gpl.
  7:  *
  8:  * @category  Horde
  9:  * @copyright 2011-2014 Horde LLC
 10:  * @license   http://www.horde.org/licenses/gpl GPL
 11:  * @package   IMP
 12:  */
 13: 
 14: /**
 15:  * Renderer to output information on:
 16:  *   1. The duration of the video data, if that information was provided in
 17:  *      the original message.
 18:  *   2. Output thumbnails of the video file.
 19:  *
 20:  * @author    Michael Slusarz <slusarz@horde.org>
 21:  * @category  Horde
 22:  * @copyright 2011-2014 Horde LLC
 23:  * @license   http://www.horde.org/licenses/gpl GPL
 24:  * @package   IMP
 25:  */
 26: class IMP_Mime_Viewer_Video extends Horde_Mime_Viewer_Default
 27: {
 28:     /**
 29:      * This driver's display capabilities.
 30:      *
 31:      * @var array
 32:      */
 33:     protected $_capability = array(
 34:         'full' => false,
 35:         'info' => true,
 36:         'inline' => true,
 37:         'raw' => false
 38:     );
 39: 
 40:     /**
 41:      * Return the full rendered version of the Horde_Mime_Part object.
 42:      *
 43:      * URL parameters used by this function:
 44:      *   - imp_video_view: (string) One of the following:
 45:      *     - view_thumbnail: Create thumbnail and display.
 46:      *
 47:      * @return array  See parent::render().
 48:      */
 49:     protected function _render()
 50:     {
 51:         switch ($GLOBALS['injector']->getInstance('Horde_Variables')->imp_video_view) {
 52:         case 'view_thumbnail':
 53:             /* Create thumbnail and display. */
 54:             return $this->_thumbnail();
 55: 
 56:         default:
 57:             return parent::_render();
 58:         }
 59:     }
 60: 
 61:     /**
 62:      * Return the rendered information about the Horde_Mime_Part object.
 63:      *
 64:      * @return array  See parent::render().
 65:      */
 66:     protected function _renderInfo()
 67:     {
 68:         global $registry;
 69: 
 70:         if ($registry->getView() == $registry::VIEW_MINIMAL) {
 71:             return array();
 72:         }
 73: 
 74:         $status = array();
 75: 
 76:         $mime_id = $this->_mimepart->getMimeId();
 77:         $headers = Horde_Mime_Headers::parseHeaders($this->getConfigParam('imp_contents')->getBodyPart($mime_id, array(
 78:             'length' => 0,
 79:             'mimeheaders' => true,
 80:             'stream' => true
 81:         ))->data);
 82: 
 83:         if (($duration = $headers->getValue('content-duration')) !== null) {
 84:             $text = array();
 85: 
 86:             if ($minutes = floor($duration / 60)) {
 87:                 $text[] = sprintf(
 88:                     ngettext(_("%d minute"), _("%d minutes"), $minutes),
 89:                     $minutes
 90:                 );
 91:             }
 92: 
 93:             if ($seconds = ($duration % 60)) {
 94:                 $text[] = sprintf(
 95:                     ngettext(_("%d second"), _("%d seconds"), $seconds),
 96:                     $seconds
 97:                 );
 98:             }
 99: 
100:             $status[] = sprintf(_("This video file is reported to be %s in length."), implode(' ', $text));
101:         }
102: 
103:         if ($this->_thumbnailBinary()) {
104:             $status[] = _("This is a thumbnail of a video attachment.");
105:             $status[] = $this->getConfigParam('imp_contents')->linkViewJS(
106:                 $this->_mimepart,
107:                 'view_attach',
108:                 '<img src="' . $this->getConfigParam('imp_contents')->urlView($this->_mimepart, 'view_attach', array('params' => array('imp_video_view' => 'view_thumbnail'))) . '" />',
109:                 null,
110:                 null,
111:                 null
112:             );
113:         }
114: 
115:         if (empty($status)) {
116:             return array();
117:         }
118: 
119:         $s = new IMP_Mime_Status($status);
120:         $s->icon('mime/video.png');
121: 
122:         return array(
123:             $this->_mimepart->getMimeId() => array(
124:                 'data' => '',
125:                 'status' => $s,
126:                 'type' => 'text/html; charset=UTF-8'
127:             )
128:         );
129:     }
130: 
131:     /**
132:      * Generate thumbnail for the video.
133:      *
134:      * @return array  See parent::render().
135:      */
136:     protected function _thumbnail()
137:     {
138:         if (!($ffmpeg = $this->_thumbnailBinary())) {
139:             return array();
140:         }
141: 
142:         $process = proc_open(
143:             escapeshellcmd($ffmpeg) . ' -i pipe:0 -vframes 1 -an -ss 1 -s 240x180 -f mjpeg pipe:1',
144:             array(
145:                 0 => array('pipe', 'r'),
146:                 1 => array('pipe', 'w')
147:             ),
148:             $pipes
149:         );
150: 
151:         $out = null;
152:         if (is_resource($process)) {
153:             fwrite($pipes[0], $this->_mimepart->getContents());
154:             fclose($pipes[0]);
155: 
156:             $out = stream_get_contents($pipes[1]);
157:             fclose($pipes[1]);
158:         }
159: 
160:         if (strlen($out)) {
161:             $type = 'image/jpeg';
162:         } else {
163:             $type = 'image/png';
164:             $img_ob = Horde_Themes::img('mini-error.png', 'imp');
165:             $out = file_get_contents($img_ob->fs);
166:         }
167: 
168:         return array(
169:             $this->_mimepart->getMimeId() => array(
170:                 'data' => $out,
171:                 'type' => 'image/jpeg'
172:             )
173:         );
174:     }
175: 
176:     /**
177:      * Get the ffmpeg binary.
178:      *
179:      * @return mixed  The binary location, or false if not available.
180:      */
181:     protected function _thumbnailBinary()
182:     {
183:         return ($this->getConfigParam('thumbnails') &&
184:                 ($ffmpeg = $this->getConfigParam('ffmpeg')) &&
185:                 is_executable($ffmpeg))
186:             ? $ffmpeg
187:             : false;
188:     }
189: 
190: }
191: