  
          self.output_message = ""
          logger.debug("Initialized %s", self.__class__.__name__)
  
      def get_source_dir(self, arguments):
          """ Set the correct source folder """
          if (hasattr(arguments, "faces_dir") and arguments.faces_dir and
                  hasattr(arguments, "frames_dir") and arguments.frames_dir):
              logger.error("Only select a source frames (-fr) or source faces (-fc) folder")
              sys.exit(1)
 
</s> remove             self.type = "faces"
 </s> add             self._type = "faces" </s> remove             self.type = "frames"
 </s> add             self._type = "frames" </s> remove         self.job = arguments.job
        self.type = None
        self.is_video = False  # Set when getting items
        self.output = arguments.output
        self.source_dir = self.get_source_dir(arguments)
        self.validate()
        self.items = self.get_items()
 </s> add         self._job = arguments.job
        self._type = None
        self._is_video = False  # Set when getting items
        self._output = arguments.output
        self._source_dir = self._get_source_dir(arguments)
        self._validate()
        self._items = self._get_items() </s> remove         logger.debug("type: '%s', source_dir: '%s'", self.type, source_dir)
 </s> add         logger.debug("type: '%s', source_dir: '%s'", self._type, source_dir) </s> remove                          "supported for 'multi-faces' and 'leftover-faces'")
            sys.exit(1)
        if self.type == "frames" and self.job == "leftover-faces":
            logger.error("You must provide a faces folder (-fc) NOT a frames folder (-fr) if "
                         "running the 'leftover-faces' job.")
 </s> add                          "supported for 'multi-faces'")
    def _get_source_dir(self, arguments):
  
          self.output_message = ""
          logger.debug("Initialized %s", self.__class__.__name__)
  
    def _get_source_dir(self, arguments):
          """ Set the correct source folder """
          if (hasattr(arguments, "faces_dir") and arguments.faces_dir and
                  hasattr(arguments, "frames_dir") and arguments.frames_dir):
              logger.error("Only select a source frames (-fr) or source faces (-fc) folder")
              sys.exit(1)
keep keep keep keep replace keep keep keep keep keep
 Update extracted faces to use PNG EXIF data (#1123)

Documentation
  - Update Usage.md, align.rst and image.rst
lib.image.py
  - read_image - Remove hash return, add metadata return
  - Remove read_image_hash functions
  - Add read_image_meta functios
  - Replace encode_image_with_hash with encode_image (to store metadata)
  - Add png meta reading and writing functions
  - Update Image Loaders/Savers to handle metadata rather than hashes
lib.training_data
  - Naming updates to remove references to hashes
lib.align.Alignments
  - Add versioning notes
  - Increment alignments version to 2.1
  - Deprecate hashing lookup functions
  - Replace filter_hashes with filter_faces
lib.align.detected_face
  - DetectedFace
    - Remove hash property
    - Add png header data serializing/deserializing functions
  - Mask
    - Add png header data serializing/deserializing functions
  - add update_legacy_png_header function to update png meta data
lib.cli.args - Deprecate alignments files for training
- plugins.train.trainer
  - Update alignments/mask code to read png header data
- scripts.convert
  - Aligned images folder - read data from png headers
- scripts.extract
  - Write png header information and no longer store hash of face
- tools.alignments
  - remove leftover-faces, merge and update-hashes jobs
  - Update jobs to use png meta data rather than hashes
- tools.manual
  - Update extract code to output png meta data and don't store hashes
  - Perform check on launch that tool is not pointing at a faces folder
tools.mask
  - Update to use png meta data
tools.sort
  - Update to use png meta data 
tools/alignments/jobs.py