| Georgios Pinitas | 8be9148 | 2019-03-26 17:23:28 +0000 | [diff] [blame] | 1 | /* |
| Michele Di Giorgio | d9eaf61 | 2020-07-08 11:12:57 +0100 | [diff] [blame] | 2 | * Copyright (c) 2019 Arm Limited. |
| Georgios Pinitas | 8be9148 | 2019-03-26 17:23:28 +0000 | [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 | /** Computes the fft scale stage |
| 27 | * |
| 28 | * @param[in] src_ptr Pointer to the source tensor. Supported data types: F32 |
| 29 | * @param[in] src_stride_x Stride of the source tensor in X dimension (in bytes) |
| 30 | * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 31 | * @param[in] src_stride_y Stride of the source tensor in Y dimension (in bytes) |
| 32 | * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 33 | * @param[in] src_stride_z Stride of the source tensor in Z dimension (in bytes) |
| 34 | * @param[in] src_step_z src_stride_z * number of elements along Z processed per workitem(in bytes) |
| 35 | * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source tensor |
| 36 | * @param[out] dst_ptr (Optional) Pointer to the destination tensor. Supported data types: same as @p src_ptr |
| 37 | * @param[in] dst_stride_x (Optional) Stride of the destination tensor in X dimension (in bytes) |
| 38 | * @param[in] dst_step_x (Optional) dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 39 | * @param[in] dst_stride_y (Optional) Stride of the destination tensor in Y dimension (in bytes) |
| 40 | * @param[in] dst_step_y (Optional) dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 41 | * @param[in] dst_stride_z (Optional) Stride of the source tensor in Z dimension (in bytes) |
| 42 | * @param[in] dst_step_z (Optional) dst_stride_z * number of elements along Z processed per workitem(in bytes) |
| 43 | * @param[in] dst_offset_first_element_in_bytes (Optional) The offset of the first element in the destination tensor |
| 44 | * @param[in] scale Scale to apply to the complex value |
| 45 | */ |
| 46 | __kernel void fft_scale_conj( |
| 47 | TENSOR3D_DECLARATION(src) |
| 48 | #ifndef IN_PLACE |
| 49 | , |
| 50 | TENSOR3D_DECLARATION(dst) |
| 51 | #endif /* not IN_PLACE */ |
| 52 | , |
| 53 | float scale) |
| 54 | { |
| 55 | // Get tensor pointers |
| 56 | Tensor3D src = CONVERT_TO_TENSOR3D_STRUCT(src); |
| 57 | #if defined(IN_PLACE) |
| 58 | Tensor3D dst = src; |
| 59 | #else /* IN_PLACE */ |
| 60 | Tensor3D dst = CONVERT_TO_TENSOR3D_STRUCT(dst); |
| 61 | #endif /* IN_PLACE */ |
| 62 | |
| 63 | // Store result |
| 64 | #if VEC_SIZE == 1 |
| 65 | *((__global float *)dst.ptr) = (*(__global float *)src.ptr) / scale; |
| 66 | #elif VEC_SIZE == 2 |
| 67 | // Load data |
| 68 | float2 data = vload2(0, (__global float *)src.ptr); |
| 69 | data /= scale; |
| 70 | #if defined(CONJ) |
| 71 | vstore2((float2)(data.s0, -data.s1), 0, (__global float *)dst.ptr); |
| 72 | #else // defined(CONJ) |
| 73 | vstore2(data, 0, (__global float *)dst.ptr); |
| 74 | #endif // defined(CONJ) |
| 75 | #else // VEC_SIZE == 1 |
| 76 | #error "vec_size of 1 and 2 are supported" |
| 77 | #endif // VEC_SIZE == 1 |
| 78 | } |