| Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017-2021 Arm Limited. |
| 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 | #if defined(VEC_SIZE) && defined(DATA_TYPE_SRC) && defined(DATA_TYPE_DST) |
| 27 | /** This performs per channel dequantization of 8-bit signed integers to floating point. (NHWC) |
| 28 | * |
| 29 | * @note Source datatype should be given as a preprocessor argument using -DDATA_TYPE_SRC=type. e.g. -DDATA_TYPE_SRC=char |
| 30 | * @note Destination datatype should be given as a preprocessor argument using -DDATA_TYPE_DST=type. e.g. -DDATA_TYPE_DST=float |
| 31 | * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16 |
| 32 | * |
| 33 | * @param[in] input_ptr Pointer to the source tensor. Supported data types: QSYMM8_PER_CHANNEL |
| 34 | * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) |
| 35 | * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) |
| 36 | * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) |
| 37 | * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) |
| 38 | * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) |
| 39 | * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) |
| 40 | * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor |
| 41 | * @param[out] output_ptr Pointer to the destination tensor. Supported data types: F16/F32 |
| 42 | * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) |
| 43 | * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) |
| 44 | * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) |
| 45 | * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) |
| 46 | * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) |
| 47 | * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) |
| 48 | * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor |
| 49 | * @param[in] scale Pointer to buffer with the per channel quantized scales |
| 50 | */ |
| 51 | __kernel void dequantization_layer_per_channel_nhwc( |
| 52 | TENSOR3D_DECLARATION(input), |
| 53 | TENSOR3D_DECLARATION(output), |
| 54 | __global float *scale) |
| 55 | { |
| 56 | // Get pixels pointer |
| 57 | Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); |
| 58 | Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); |
| 59 | |
| 60 | #if 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; |
| 66 | scale -= max(xi - (int)LAST_ACCESSED_X, 0); |
| 67 | |
| 68 | // Load data |
| 69 | VEC_DATA_TYPE(int, VEC_SIZE) |
| 70 | val = CONVERT(VLOAD(VEC_SIZE)(0, (__global DATA_TYPE_SRC *)input.ptr), VEC_DATA_TYPE(int, VEC_SIZE)); |
| 71 | |
| 72 | // Create scale vectors |
| 73 | const VEC_DATA_TYPE(float, VEC_SIZE) |
| 74 | vscale = VLOAD(VEC_SIZE)(0, &scale[xi]); |
| 75 | |
| 76 | // Dequantize |
| 77 | VEC_DATA_TYPE(float, VEC_SIZE) |
| 78 | res = vscale * CONVERT((val), VEC_DATA_TYPE(float, VEC_SIZE)); |
| 79 | |
| 80 | // Store result |
| 81 | VSTORE(VEC_SIZE) |
| 82 | (CONVERT(res, VEC_DATA_TYPE(DATA_TYPE_DST, VEC_SIZE)), 0, (__global DATA_TYPE_DST *)output.ptr); |
| 83 | #else // !defined(LAST_ACCESSED_X) |
| 84 | *((__global DATA_TYPE_DST *)(output.ptr)) = (DATA_TYPE_DST)((float)((int)(*((__global DATA_TYPE_SRC *)(input.ptr)))) * scale[get_global_id(0)]); |
| 85 | #endif // defined(LAST_ACCESSED_X) |
| 86 | } |
| 87 | #endif // defined(VEC_SIZE) && defined(DATA_TYPE_SRC) && defined(DATA_TYPE_DST) |