Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 1 | /* |
Sheri Zhang | a14817a | 2020-02-26 10:30:15 +0000 | [diff] [blame] | 2 | * Copyright (c) 2018-2020 ARM Limited. |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "helpers.h" |
| 25 | |
| 26 | /** Perform a strided slice operation on a given input. |
| 27 | * |
| 28 | * @attention Supported tensor rank: up to 4 |
| 29 | * |
| 30 | * @attention Data type can be passed using the -DDATA_TYPE compile flag, e.g. -DDATA_TYPE=float |
| 31 | * @attention Input and output tensor dephts should be given as a preprocessor arguments using -DSRC_DEPTH=size. and -DDST_DEPTH=size |
| 32 | * @attention Absolute start coordinates for each dimension should be given as preprocessor -DSTART_index=value e.g. -DSTART_0=2 |
| 33 | * @attention Strides for each dimension should be given as preprocessor -DSTRIDE_index=value e.g. -DSTRIDE_1=1 |
| 34 | * |
Sheri Zhang | a14817a | 2020-02-26 10:30:15 +0000 | [diff] [blame] | 35 | * @param[in] input_ptr Pointer to the source tensor. Supported data types: All |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 36 | * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) |
| 37 | * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) |
| 38 | * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) |
| 39 | * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) |
| 40 | * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) |
| 41 | * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) |
| 42 | * @param[in] input_stride_w Stride of the source tensor in W dimension (in bytes) |
| 43 | * @param[in] input_step_w input_stride_w * number of elements along W processed per workitem(in bytes) |
| 44 | * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor |
| 45 | * @param[out] output_ptr Pointer to the destination tensor. Supported data types: same as @p input_ptr |
| 46 | * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) |
| 47 | * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) |
| 48 | * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) |
| 49 | * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) |
| 50 | * @param[in] output_stride_z Stride of the destination tensor in Z dimension (in bytes) |
| 51 | * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) |
| 52 | * @param[in] output_stride_w Stride of the destination tensor in W dimension (in bytes) |
| 53 | * @param[in] output_step_w output_stride_w * number of elements along W processed per workitem(in bytes) |
| 54 | * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor |
| 55 | */ |
| 56 | __kernel void strided_slice( |
| 57 | TENSOR4D_DECLARATION(input), |
| 58 | TENSOR4D_DECLARATION(output)) |
| 59 | { |
| 60 | // Get pixels pointer |
| 61 | Tensor4D input = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(input, SRC_DEPTH); |
| 62 | Tensor4D output = CONVERT_TO_TENSOR4D_STRUCT(output, DST_DEPTH); |
| 63 | |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 64 | int offset = 0; |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 65 | |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 66 | // Offset X |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 67 | #if defined(SHRINK_0) |
| 68 | input.ptr += (int)START_0 * input_stride_x; |
| 69 | #elif defined(START_0) && defined(STRIDE_0) && defined(VEC_SIZE) && defined(LAST_ACCESSED_X) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 70 | // Check if access on width gets out of bounds |
| 71 | // If it does shift access vector to access elements within bounds |
| 72 | const int xi = (int)(get_global_id(0) * VEC_SIZE); |
| 73 | offset = (int)START_0 + min(xi, (int)LAST_ACCESSED_X); |
| 74 | input.ptr += offset * input_stride_x; |
| 75 | output.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * output_stride_x; |
| 76 | #elif defined(START_0) && defined(STRIDE_0) |
| 77 | offset = (int)START_0 + (int)get_global_id(0) * (int)STRIDE_0; |
| 78 | input.ptr += offset * input_stride_x; |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 79 | #endif // defined(START_0) && defined(STRIDE_0) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 80 | |
| 81 | // Offset Y |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 82 | #if defined(SHRINK_1) |
| 83 | input.ptr += (int)START_1 * input_stride_y; |
| 84 | #elif defined(START_1) && defined(STRIDE_1) |
| 85 | #if defined(SHRINK_0) |
| 86 | offset = (int)START_1 + (int)get_global_id(0) * (int)STRIDE_1; |
| 87 | #else // defined(SHRINK_0) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 88 | offset = (int)START_1 + (int)get_global_id(1) * (int)STRIDE_1; |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 89 | #endif // defined(SHRINK_0) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 90 | input.ptr += offset * input_stride_y; |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 91 | #endif // defined(START_1) && defined(STRIDE_1) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 92 | |
| 93 | // Offset Z |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 94 | #if defined(SHRINK_2) |
| 95 | input.ptr += (int)START_2 * input_stride_z; |
| 96 | #elif defined(START_2) && defined(STRIDE_2) |
| 97 | |
| 98 | #if defined(SHRINK_1) && defined(SHRINK_0) |
| 99 | offset = (int)START_2 + (int)get_global_id(0) * (int)STRIDE_2; |
| 100 | #elif defined(SHRINK_1) || defined(SHRINK_0) |
| 101 | offset = (int)START_2 + (int)get_global_id(1) * (int)STRIDE_2; |
| 102 | #else // defined(SHRINK_1) && defined(SHRINK_0) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 103 | offset = (int)START_2 + ((int)get_global_id(2) % (int)DST_DEPTH) * (int)STRIDE_2; |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 104 | #endif // defined(SHRINK_1) && defined(SHRINK_0) |
| 105 | |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 106 | input.ptr += offset * input_stride_z; |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 107 | #endif // defined(START_2) && defined(STRIDE_2) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 108 | |
| 109 | // Offset depth |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 110 | #if defined(SHRINK_3) |
| 111 | input.ptr += (int)START_3 * input_stride_w; |
| 112 | #elif defined(START_3) && defined(STRIDE_3) |
| 113 | #if defined(SHRINK_2) && defined(SHRINK_1) && defined(SHRINK_0) |
| 114 | offset = (int)START_3 + (int)get_global_id(0) * (int)STRIDE_3; |
| 115 | #elif !defined(SHRINK_2) && !defined(SHRINK_1) && !defined(SHRINK_0) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 116 | offset = (int)START_3 + ((int)get_global_id(2) / (int)DST_DEPTH) * (int)STRIDE_3; |
Georgios Pinitas | b4af2c6 | 2018-12-10 18:45:35 +0000 | [diff] [blame] | 117 | #elif(defined(SHRINK_0) && defined(SHRINK_1)) || (defined(SHRINK_1) && defined(SHRINK_2)) || (defined(SHRINK_0) && defined(SHRINK_2)) |
| 118 | offset = (int)START_3 + (int)get_global_id(1) * (int)STRIDE_3; |
| 119 | #else // defined(SHRINK_2) && defined(SHRINK_1) && defined(SHRINK_0) |
| 120 | offset = (int)START_3 + ((int)get_global_id(2) % (int)DST_DEPTH) * (int)STRIDE_3; |
| 121 | #endif // defined(SHRINK_2) && defined(SHRINK_1) && defined(SHRINK_0) |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 122 | input.ptr += offset * input_stride_w; |
| 123 | #endif // defined(START_3) && defined(STRIDE_3) |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 124 | |
| 125 | // Store result |
Georgios Pinitas | c1a7245 | 2018-08-24 11:25:32 +0100 | [diff] [blame] | 126 | #if defined(VEC_SIZE) && defined(LAST_ACCESSED_X) |
| 127 | VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE) |
| 128 | val = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)(input.ptr)); |
| 129 | |
| 130 | VSTORE(VEC_SIZE) |
| 131 | (val, 0, (__global DATA_TYPE *)(output.ptr)); |
| 132 | #else // defined(VEC_SIZE) && defined(LAST_ACCESSED_X) |
| 133 | *((__global DATA_TYPE *)(output.ptr)) = *((__global DATA_TYPE *)(input.ptr)); |
| 134 | #endif // defined(VEC_SIZE) && defined(LAST_ACCESSED_X) |
Georgios Pinitas | 77589b5 | 2018-08-21 14:41:35 +0100 | [diff] [blame] | 135 | } |