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      1 # Copyright 2016 The TensorFlow Authors. All Rights Reserved.
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #     http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 # =============================================================================
     15 """Tests for third_party.tensorflow.contrib.ffmpeg.decode_video_op."""
     16 
     17 from __future__ import absolute_import
     18 from __future__ import division
     19 from __future__ import print_function
     20 
     21 import os.path
     22 
     23 import six  # pylint: disable=unused-import
     24 
     25 from tensorflow.contrib import ffmpeg
     26 from tensorflow.python.ops import image_ops
     27 from tensorflow.python.platform import resource_loader
     28 from tensorflow.python.platform import test
     29 
     30 
     31 class DecodeVideoOpTest(test.TestCase):
     32 
     33   def _loadFileAndTest(self, filename, width, height, frames, bmp_filename,
     34                        index):
     35     """Loads an video file and validates the output tensor.
     36 
     37     Args:
     38       filename: The filename of the input file.
     39       width: The width of the video.
     40       height: The height of the video.
     41       frames: The frames of the video.
     42       bmp_filename: The filename for the bmp file.
     43       index: Index location inside the video.
     44     """
     45     with self.test_session():
     46       path = os.path.join(resource_loader.get_data_files_path(), 'testdata',
     47                           filename)
     48       with open(path, 'rb') as f:
     49         contents = f.read()
     50 
     51       bmp_path = os.path.join(resource_loader.get_data_files_path(), 'testdata',
     52                               bmp_filename)
     53       with open(bmp_path, 'rb') as f:
     54         bmp_contents = f.read()
     55 
     56       image_op = image_ops.decode_bmp(bmp_contents)
     57       image = image_op.eval()
     58       self.assertEqual(image.shape, (height, width, 3))
     59       video_op = ffmpeg.decode_video(contents)
     60       video = video_op.eval()
     61       self.assertEqual(video.shape, (frames, height, width, 3))
     62       self.assertAllEqual(video[index, :, :, :], image)
     63 
     64   def testMp4(self):
     65     self._loadFileAndTest('small.mp4', 560, 320, 166, 'small_100.bmp', 99)
     66 
     67 
     68 if __name__ == '__main__':
     69   test.main()
     70