# Copyright 2016 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Image represented by either a URI or byte stream."""
from base64 import b64encode
from google.cloud._helpers import _to_bytes
from google.cloud._helpers import _bytes_to_unicode
[docs]class Image(object):
"""Image representation containing information to be annotate.
:type image_source: str
:param image_source: A string which can a Google Cloud Storage URI, or
a byte stream of the image.
:type client: :class:`Client`
:param client: Instance of Vision client.
"""
def __init__(self, image_source, client):
self.client = client
self._content = None
self._source = None
if _bytes_to_unicode(image_source).startswith('gs://'):
self._source = image_source
else:
self._content = b64encode(_to_bytes(image_source))
[docs] def as_dict(self):
"""Generate dictionary structure for request"""
if self.content:
return {
'content': self.content
}
else:
return {
'source': {
'gcs_image_uri': self.source
}
}
@property
def content(self):
"""Base64 encoded image content"""
return self._content
@property
def source(self):
"""Google Cloud Storage URI"""
return self._source