Adding video_ffmpeg_php transcoder

This transcoder extends video_ffmpeg and uses ffmpeg-php extension
to get duration, dimensions and generating thumbnails.

This allows the video module to run in a restricted environment
where exec() and variants are not available.

1 files changed, 190 insertions, 0 deletions

diff --git a/transcoders/video_ffmpeg_php.inc b/transcoders/video_ffmpeg_php.inc
new file mode 100644
index 0000000..478c333
--- /dev/null
+++ b/transcoders/video_ffmpeg_php.inc
@@ -0,0 +1,190 @@
+<?php
+
+/*
+ * @file
+ * Transcoder class file to handle ffmpeg settings and conversions.
+ */
+
+// Make sure that the parent class is included.
+include_once 'video_ffmpeg.inc';
+
+class video_ffmpeg_php extends video_ffmpeg implements transcoder_interface {
+
+  // Naming for our radio options. Makes it easy to extend our transcoders.
+  private $name  = 'FFMPEG-PHP (Use ffmpeg-php when possible)';
+  private $value = 'video_ffmpeg_php';
+
+  /**
+   * Constructor. Just call the parent.
+   */
+  public function __construct() {
+    parent::__construct();
+  }
+
+  /**
+   * Generate video thumbs.
+   *
+   * @todo
+   *   Use php-ffmpeg API instead of run_command().
+   */
+  public function generate_thumbnails($video) {
+    global $user;
+    // Setup our thmbnail path.
+    $video_thumb_path = variable_get('video_thumb_path', 'videos/thumbnails');
+    // Get the file system directory.
+    // @todo : get the field file system settings to this
+    $schema_thumb_path = file_default_scheme() . '://' . $video_thumb_path . '/' . $video['fid'];
+    file_prepare_directory($schema_thumb_path, FILE_CREATE_DIRECTORY);
+    // Total thumbs to generate
+    $total_thumbs = variable_get('video_thumbs', 5);
+    $videofile = file_load($video['fid']);
+    //get the actual video file path from the stream wrappers
+    $videopath = drupal_realpath($videofile->uri);
+    //get the playtime from the current transcoder
+    $duration = $this->get_playtime($videopath);
+
+    $files = NULL;
+    for ($i = 1; $i <= $total_thumbs; $i++) {
+      $seek = ($duration / $total_thumbs) * $i - 1;  //adding minus one to prevent seek times equaling the last second of the video
+      $filename = file_munge_filename("video-thumb-" . $video['fid'] . "-$i.jpg", '', TRUE);
+      $thumbfile = $schema_thumb_path . '/' . $filename;
+      //skip files already exists, this will save ffmpeg traffic
+      if (!is_file(drupal_realpath($thumbfile))) {
+        // Use PHP-FFMPEG
+        $movie  = new ffmpeg_movie($videopath);
+        $frames = $movie->getFrameCount();
+        $fps    = $movie->getFrameRate();
+
+        // Get the right frame number
+        $framenumber = (int) $seek * $fps;
+        if ($framenumber > $frames) {
+          $framenumber = $frames;
+        }
+
+        // Get the frame and create thumb file
+        $frame = $movie->getFrame($framenumber);
+        $thumb = $frame->toGDImage();
+        imagejpeg($thumb, drupal_realpath($thumbfile));
+
+        if (!file_exists(drupal_realpath($thumbfile))) {
+          $error_param = array('%file' => $thumbfile, '%cmd' => $command, '%out' => $command_output);
+          $error_msg = t("Error generating thumbnail for video: generated file %file does not exist.<br />Command Executed:<br />%cmd<br />Command Output:<br />%out", $error_param);
+          // Log the error message.
+          watchdog('transcoder', $error_msg, array(), WATCHDOG_ERROR);
+          continue;
+        }
+      }
+      // Begin building the file object.
+      // @TODO : use file_munge_filename()
+      $file = new stdClass();
+      $file->uid = $user->uid;
+      $file->status = 0;
+      $file->filename = trim($filename);
+      $file->uri = $thumbfile;
+      $file->filemime = file_get_mimetype($filename);
+      $file->filesize = filesize(drupal_realpath($thumbfile));
+      $file->timestamp = time();
+      $files[] = $file;
+    }
+    return $files;
+  }
+
+  /**
+   * Return the playtime seconds of a video
+   */
+  public function get_playtime($video) {
+    $movie = new ffmpeg_movie($video);
+    return $movie->getDuration();
+  }
+
+  /**
+   * Return the dimensions of a video
+   */
+  public function get_dimensions($video) {
+    $movie         = new ffmpeg_movie($video);
+    $res['width']  = $movie->getFrameWidth();
+    $res['height'] = $movie->getFrameHeight();
+    return $res;
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#get_name()
+   */
+  public function get_name() {
+    return $this->name;
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#get_value()
+   */
+  public function get_value() {
+    return $this->value;
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#get_help()
+   */
+  public function get_help() {
+    return l(t('FFMPEG-PHP Online Manual'), 'http://ffmpeg-php.sourceforge.net/');
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#admin_settings()
+   */
+  public function admin_settings() {
+    return parent::admin_settings();
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#admin_settings_validate()
+   */
+  public function admin_settings_validate($form, &$form_state) {
+    return;
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#create_job()
+   */
+  public function create_job($video, $nid) {
+    return parent::create_job($video, $nid);
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#delete_job()
+   */
+  public function delete_job($video) {
+    return parent::delete_job($video);
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#load_job()
+   */
+  public function load_job($fid) {
+    return parent::load_job($fid);
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#load_job_queue()
+   */
+  public function load_job_queue() {
+    return parent::load_job_queue();
+  }
+
+  /**
+   * Interface Implementations
+   * @see sites/all/modules/video/includes/transcoder_interface#load_completed_job()
+   */
+  public function load_completed_job(&$video) {
+    return parent::load_completed_job($video);
+  }
+
+}