1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 /*!
21 * \file pad_utils.h
22 * \brief Padding helpers
23 */
24 #ifndef TOPI_DETAIL_PAD_UTILS_H_
25 #define TOPI_DETAIL_PAD_UTILS_H_
26
27 #include <vector>
28
29 #include "tvm/expr.h"
30 #include "tvm/expr_operator.h"
31
32 namespace topi {
33 namespace detail {
34 using namespace tvm;
35
36 /*!
37 * \brief Get padding size for each side given padding height and width
38 *
39 * \param pad_h The amount to pad each of the top and bottom sides
40 * \param pad_w The amount to pad each of the left and right sides
41 *
42 * \return An array of 4 elements, representing padding sizes for
43 * each individual side. The array is in the order { top, left, bottom, right }
44 */
GetPadTuple(Expr pad_h,Expr pad_w)45 inline Array<Expr> GetPadTuple(Expr pad_h, Expr pad_w) {
46 pad_h *= 2;
47 pad_w *= 2;
48
49 auto pad_top = indexdiv(pad_h + 1, 2);
50 auto pad_left = indexdiv(pad_w + 1, 2);
51
52 return { pad_top, pad_left, pad_h - pad_top, pad_w - pad_left };
53 }
54
55 } // namespace detail
56 } // namespace topi
57 #endif // TOPI_DETAIL_PAD_UTILS_H_
58