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# Copyright (C) 2020 Arm Limited or its affiliates. All rights reserved.
#
# SPDX-License-Identifier: Apache-2.0
#
# 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
#
# 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.
# Description:
# Contains unit tests for npu_encode_weights API for an external consumer
import numpy as np
import pytest
from ethosu.vela.api import npu_encode_weights
from ethosu.vela.api import NpuAccelerator
from ethosu.vela.api import NpuBlockTraversal
@pytest.mark.parametrize(
"arch",
list(NpuAccelerator),
)
@pytest.mark.parametrize("dilation_x", [1, 2])
@pytest.mark.parametrize("dilation_y", [1, 2])
@pytest.mark.parametrize("ifm_bitdepth", [8, 16])
@pytest.mark.parametrize("depth_control", [1, 2, 3])
@pytest.mark.parametrize("weights_shape_and_block_depth", [((16, 16, 16, 16), 8), ((3, 3, 25, 16), 8)])
def test_encode_weights(
arch,
weights_shape_and_block_depth,
dilation_x,
dilation_y,
ifm_bitdepth,
depth_control,
):
"""
This unit test checks the interface of the API function but not the functionality.
Functional correctness is tested at a system level.
"""
weights_shape = weights_shape_and_block_depth[0]
ofm_block_depth = weights_shape_and_block_depth[1]
val_max = np.iinfo(np.uint8).max
weights_hwio = np.random.randint(val_max, size=weights_shape, dtype=np.uint8)
weights_ohwi = np.transpose(weights_hwio, (3, 0, 1, 2))
is_depthwise = True if depth_control == 2 else False
block_traversal = NpuBlockTraversal.PART_KERNEL_FIRST if depth_control == 3 else NpuBlockTraversal.DEPTH_FIRST
dilation_xy = (dilation_x, dilation_y)
encoded_stream = npu_encode_weights(
accelerator=arch,
weights_volume=weights_ohwi,
dilation_xy=dilation_xy,
ifm_bitdepth=ifm_bitdepth,
ofm_block_depth=ofm_block_depth,
is_depthwise=is_depthwise,
block_traversal=block_traversal,
)
assert type(encoded_stream) == bytearray
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