Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, 2017 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 | /** This function accumulates an input image into output image. |
| 27 | * |
| 28 | * @param[in] input_ptr Pointer to the source image. Supported data types: U8 |
| 29 | * @param[in] input_stride_x Stride of the source image in X dimension (in bytes) |
| 30 | * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) |
| 31 | * @param[in] input_stride_y Stride of the source image in Y dimension (in bytes) |
| 32 | * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) |
| 33 | * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image |
| 34 | * @param[out] accu_ptr Pointer to the destination image. Supported data types: S16 |
| 35 | * @param[in] accu_stride_x Stride of the destination image in X dimension (in bytes) |
| 36 | * @param[in] accu_step_x accu_stride_x * number of elements along X processed per workitem(in bytes) |
| 37 | * @param[in] accu_stride_y Stride of the destination image in Y dimension (in bytes) |
| 38 | * @param[in] accu_step_y accu_stride_y * number of elements along Y processed per workitem(in bytes) |
| 39 | * @param[in] accu_offset_first_element_in_bytes The offset of the first element in the destination image |
| 40 | */ |
| 41 | __kernel void accumulate( |
| 42 | IMAGE_DECLARATION(input), |
| 43 | IMAGE_DECLARATION(accu)) |
| 44 | { |
| 45 | // Get pixels pointer |
| 46 | Image input = CONVERT_TO_IMAGE_STRUCT(input); |
| 47 | Image accu = CONVERT_TO_IMAGE_STRUCT(accu); |
| 48 | |
| 49 | // Load data |
| 50 | uchar16 in_data = vload16(0, input.ptr); |
| 51 | short16 accu_data = vload16(0, (__global short *)accu.ptr); |
| 52 | |
| 53 | // Perform accumulation |
| 54 | short16 res = add_sat(convert_short16(in_data), accu_data); |
| 55 | |
| 56 | // Store result |
| 57 | vstore16(res, 0, (__global short *)accu.ptr); |
| 58 | } |
| 59 | |
| 60 | /** This function accumulates a weighted value from an input image to an output image. |
| 61 | * |
| 62 | * @param[in] input_ptr Pointer to the source image. Supported data types: U8 |
| 63 | * @param[in] input_stride_x Stride of the source image in X dimension (in bytes) |
| 64 | * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) |
| 65 | * @param[in] input_stride_y Stride of the source image in Y dimension (in bytes) |
| 66 | * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) |
| 67 | * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image |
| 68 | * @param[out] accu_ptr Pointer to the destination image. Supported data types: S16 |
| 69 | * @param[in] accu_stride_x Stride of the destination image in X dimension (in bytes) |
| 70 | * @param[in] accu_step_x accu_stride_x * number of elements along X processed per workitem(in bytes) |
| 71 | * @param[in] accu_stride_y Stride of the destination image in Y dimension (in bytes) |
| 72 | * @param[in] accu_step_y accu_stride_y * number of elements along Y processed per workitem(in bytes) |
| 73 | * @param[in] accu_offset_first_element_in_bytes The offset of the first element in the destination image |
| 74 | * @param[in] alpha The float scalar value with a value in the range of 0 to 1 |
| 75 | */ |
| 76 | __kernel void accumulate_weighted( |
| 77 | IMAGE_DECLARATION(input), |
| 78 | IMAGE_DECLARATION(accu), |
| 79 | const float alpha) |
| 80 | { |
| 81 | // Get pixels pointer |
| 82 | Image input = CONVERT_TO_IMAGE_STRUCT(input); |
| 83 | Image accu = CONVERT_TO_IMAGE_STRUCT(accu); |
| 84 | |
| 85 | // Load data |
| 86 | const float16 in_data = convert_float16(vload16(0, input.ptr)); |
| 87 | const float16 accu_data = convert_float16(vload16(0, accu.ptr)); |
| 88 | |
| 89 | // Calculate weighted accumulation |
| 90 | const uchar16 res = convert_uchar16((1.0f - alpha) * accu_data + alpha * in_data); |
| 91 | |
| 92 | // Store result |
| 93 | vstore16(res, 0, accu.ptr); |
| 94 | } |
| 95 | |
| 96 | /** This function accumulates a squared value from an input image to an output image. |
| 97 | * |
| 98 | * @param[in] input_ptr Pointer to the source image. Supported data types: U8 |
| 99 | * @param[in] input_stride_x Stride of the source image in X dimension (in bytes) |
| 100 | * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) |
| 101 | * @param[in] input_stride_y Stride of the source image in Y dimension (in bytes) |
| 102 | * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) |
| 103 | * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image |
| 104 | * @param[out] accu_ptr Pointer to the destination image. Supported data types: S16 |
| 105 | * @param[in] accu_stride_x Stride of the destination image in X dimension (in bytes) |
| 106 | * @param[in] accu_step_x accu_stride_x * number of elements along X processed per workitem(in bytes) |
| 107 | * @param[in] accu_stride_y Stride of the destination image in Y dimension (in bytes) |
| 108 | * @param[in] accu_step_y accu_stride_y * number of elements along Y processed per workitem(in bytes) |
| 109 | * @param[in] accu_offset_first_element_in_bytes The offset of the first element in the destination image |
| 110 | * @param[in] shift The U32 scalar value with a value in the range of 0 to 15 |
| 111 | */ |
| 112 | __kernel void accumulate_squared( |
| 113 | IMAGE_DECLARATION(input), |
| 114 | IMAGE_DECLARATION(accu), |
| 115 | const uint shift) |
| 116 | { |
| 117 | // Get pixels pointer |
| 118 | Image input = CONVERT_TO_IMAGE_STRUCT(input); |
| 119 | Image accu = CONVERT_TO_IMAGE_STRUCT(accu); |
| 120 | |
| 121 | // Load data |
| 122 | ushort16 in_data = convert_ushort16(vload16(0, input.ptr)); |
| 123 | uint16 accu_data = convert_uint16(vload16(0, (__global short *)accu.ptr)); |
| 124 | |
| 125 | // Calculate squared accumulation |
| 126 | short16 res = convert_short16_sat(accu_data + convert_uint16((in_data * in_data) >> shift)); |
| 127 | |
| 128 | // Store result |
| 129 | vstore16(res, 0, (__global short *)accu.ptr); |
| 130 | } |