Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 1 | /* |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 2 | * Copyright (c) 2017-2019 ARM Limited. |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +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 | |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 26 | #if defined(VEC_SIZE) && defined(DATA_TYPE) && defined(SCALE) && defined(OFFSET) |
| 27 | |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 28 | /** This performs the dequantization of 8-bit unsigned integers to floating point. |
| 29 | * |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 30 | * @note Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=float |
| 31 | * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16 |
| 32 | * @note Quantization scale of input tensor is passed in with -DSCALE=scale. |
| 33 | * @note Quantization offset of input tensor is passed in with -DOFFSET=offset. |
| 34 | * |
| 35 | * @param[in] input_ptr Pointer to the source tensor. Supported data types: QASYMM8 |
| 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_offset_first_element_in_bytes The offset of the first element in the source tensor |
| 43 | * @param[out] output_ptr Pointer to the destination tensor. Supported data types: F16/F32 |
| 44 | * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) |
| 45 | * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) |
| 46 | * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) |
| 47 | * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) |
| 48 | * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) |
| 49 | * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) |
| 50 | * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 51 | */ |
| 52 | __kernel void dequantization_layer( |
| 53 | TENSOR3D_DECLARATION(input), |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 54 | TENSOR3D_DECLARATION(output)) |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 55 | { |
| 56 | // Get pixels pointer |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 57 | Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); |
| 58 | Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 59 | |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 60 | #if defined(VEC_SIZE) && defined(LAST_ACCESSED_X) |
| 61 | // Check if access on width gets out of bounds |
| 62 | // If it does shift access vector to access elements within bounds |
| 63 | const int xi = (int)(get_global_id(0) * VEC_SIZE); |
| 64 | input.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * input_stride_x; |
| 65 | output.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * output_stride_x; |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 66 | |
| 67 | // Load data |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 68 | VEC_DATA_TYPE(int, VEC_SIZE) |
| 69 | val = CONVERT(VLOAD(VEC_SIZE)(0, (__global uchar *)input.ptr), VEC_DATA_TYPE(int, VEC_SIZE)); |
| 70 | |
| 71 | // Create scale and offset vectors |
| 72 | const VEC_DATA_TYPE(float, VEC_SIZE) |
| 73 | vscale = SCALE; |
| 74 | |
| 75 | const VEC_DATA_TYPE(int, VEC_SIZE) |
| 76 | voffset = OFFSET; |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 77 | |
| 78 | // Dequantize |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 79 | VEC_DATA_TYPE(float, VEC_SIZE) |
| 80 | res = vscale * CONVERT((val - voffset), VEC_DATA_TYPE(float, VEC_SIZE)); |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 81 | |
| 82 | // Store result |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 83 | VSTORE(VEC_SIZE) |
| 84 | (CONVERT(res, VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE)), 0, (__global DATA_TYPE *)output.ptr); |
| 85 | #else // !defined(VEC_SIZE) || !defined(LAST_ACCESSED_X) |
| 86 | *((__global DATA_TYPE *)(output.ptr)) = (DATA_TYPE)((float)((int)(*((__global uchar *)(input.ptr))) - (int)(OFFSET)) * (float)(SCALE)); |
| 87 | #endif // defined(VEC_SIZE) && defined(LAST_ACCESSED_X) |
Michele Di Giorgio | 56dd726 | 2017-07-27 09:53:49 +0100 | [diff] [blame] | 88 | } |
Georgios Pinitas | 574775c | 2019-02-18 20:08:02 +0000 | [diff] [blame^] | 89 | |
| 90 | #endif // defined(VEC_SIZE) && defined(DATA_TYPE) && defined(SCALE) && defined(OFFSET) |