# Copyright 2018 The TensorFlow Authors. 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.
# ==============================================================================
"""Model script to test TF-TensorRT integration."""

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function

import numpy as np

from tensorflow.contrib.tensorrt.test import tf_trt_integration_test_base as trt_test
from tensorflow.python.framework import constant_op
from tensorflow.python.framework import dtypes
from tensorflow.python.framework import ops
from tensorflow.python.ops import array_ops
from tensorflow.python.ops import gen_array_ops
from tensorflow.python.ops import gen_math_ops
from tensorflow.python.platform import test


class ConcatenationTest(trt_test.TfTrtIntegrationTestBase):

  def GetParams(self):
    """Testing Concatenation in TF-TRT conversion."""
    dtype = dtypes.float32
    input_name = "input"
    input_dims = [2, 3, 3, 1]
    output_name = "output"
    g = ops.Graph()
    with g.as_default():
      x = array_ops.placeholder(dtype=dtype, shape=input_dims, name=input_name)
      # scale
      a = constant_op.constant(np.random.randn(3, 1, 1), dtype=dtype)
      r1 = x / a
      a = constant_op.constant(np.random.randn(3, 1, 1), dtype=dtype)
      r2 = a / x
      a = constant_op.constant(np.random.randn(1, 3, 1), dtype=dtype)
      r3 = a + x
      a = constant_op.constant(np.random.randn(1, 3, 1), dtype=dtype)
      r4 = x * a
      a = constant_op.constant(np.random.randn(3, 1, 1), dtype=dtype)
      r5 = x - a
      a = constant_op.constant(np.random.randn(3, 1, 1), dtype=dtype)
      r6 = a - x
      a = constant_op.constant(np.random.randn(3, 1), dtype=dtype)
      r7 = x - a
      a = constant_op.constant(np.random.randn(3, 1), dtype=dtype)
      r8 = a - x
      a = constant_op.constant(np.random.randn(3, 1, 1), dtype=dtype)
      r9 = gen_math_ops.maximum(x, a)
      a = constant_op.constant(np.random.randn(3, 1), dtype=dtype)
      r10 = gen_math_ops.minimum(a, x)
      a = constant_op.constant(np.random.randn(3), dtype=dtype)
      r11 = x * a
      a = constant_op.constant(np.random.randn(1), dtype=dtype)
      r12 = a * x
      concat1 = array_ops.concat([r1, r2, r3, r4, r5, r6], axis=-1)
      concat2 = array_ops.concat([r7, r8, r9, r10, r11, r12], axis=3)
      x = array_ops.concat([concat1, concat2], axis=-1)
      gen_array_ops.reshape(x, [2, -1], name=output_name)
    return trt_test.TfTrtIntegrationTestParams(
        gdef=g.as_graph_def(),
        input_names=[input_name],
        input_dims=[input_dims],
        output_names=[output_name],
        expected_output_dims=[(2, 126)])

  def ExpectedEnginesToBuild(self, run_params):
    """Return the expected engines to build."""
    return ["TRTEngineOp_0"]


if __name__ == "__main__":
  test.main()
