| /* |
| * Copyright (c) 2016, 2017 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include "helpers.h" |
| |
| /** Perform binary thresholding on an image. |
| * |
| * @param[in] in_ptr Pointer to the source image |
| * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] in_offset_first_element_in_bytes The offset of the first element in the first source image |
| * @param[out] out_ptr Pointer to the destination image |
| * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
| * @param[in] false_val False value |
| * @param[in] true_val True value |
| * @param[in] threshold The thresold value |
| */ |
| __kernel void threshold_binary( |
| IMAGE_DECLARATION(in), |
| IMAGE_DECLARATION(out), |
| const uchar false_val, |
| const uchar true_val, |
| const uchar threshold) |
| { |
| // Get pixels pointer |
| Image in = CONVERT_TO_IMAGE_STRUCT(in); |
| Image out = CONVERT_TO_IMAGE_STRUCT(out); |
| |
| // Load data |
| uchar16 in_data = vload16(0, in.ptr); |
| |
| // Perform binary thresholding |
| in_data = select((uchar16)false_val, (uchar16)true_val, in_data > (uchar16)threshold); |
| |
| // Store result |
| vstore16(in_data, 0, out.ptr); |
| } |
| |
| /** Perform range thresholding on an image. |
| * |
| * @param[in] in_ptr Pointer to the source image |
| * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] in_offset_first_element_in_bytes The offset of the first element in the first source image |
| * @param[out] out_ptr Pointer to the destination image |
| * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
| * @param[in] false_val False value |
| * @param[in] true_val True value |
| * @param[in] lower Lower threshold |
| * @param[in] upper Upper threshold |
| */ |
| __kernel void threshold_range( |
| IMAGE_DECLARATION(in), |
| IMAGE_DECLARATION(out), |
| const uchar false_val, |
| const uchar true_val, |
| const uchar lower, |
| const uchar upper) |
| { |
| // Get pixels pointer |
| Image in = CONVERT_TO_IMAGE_STRUCT(in); |
| Image out = CONVERT_TO_IMAGE_STRUCT(out); |
| |
| // Load data |
| uchar16 in_data = vload16(0, in.ptr); |
| |
| // Perform range thresholding |
| in_data = select((uchar16)true_val, (uchar16)false_val, in_data > (uchar16)upper || in_data < (uchar16)lower); |
| |
| // Store result |
| vstore16(in_data, 0, out.ptr); |
| } |