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/*
* 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"
/** Calculate the absolute difference of two input images.
*
* @attention The input and output data types need to be passed at compile time using -DDATA_TYPE_IN1, -DDATA_TYPE_IN2 and -DDATA_TYPE_OUT:\n
* e.g. -DDATA_TYPE_IN1=uchar -DDATA_TYPE_IN2=uchar -DDATA_TYPE_OUT=short
*
* @param[in] in1_ptr Pointer to the first source image. Supported data types: U8, S16
* @param[in] in1_stride_x Stride of the first source image in X dimension (in bytes)
* @param[in] in1_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] in1_stride_y Stride of the first source image in Y dimension (in bytes)
* @param[in] in1_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] in1_offset_first_element_in_bytes The offset of the first element in the first source image
* @param[in] in2_ptr Pointer to the second source image. Supported data types: U8, S16
* @param[in] in2_stride_x Stride of the second source image in X dimension (in bytes)
* @param[in] in2_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] in2_stride_y Stride of the second source image in Y dimension (in bytes)
* @param[in] in2_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] in2_offset_first_element_in_bytes The offset of the first element in the second source image
* @param[out] out_ptr Pointer to the destination image. Supported data types: U8, S16
* @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
*/
__kernel void absdiff(
IMAGE_DECLARATION(in1),
IMAGE_DECLARATION(in2),
IMAGE_DECLARATION(out))
{
Image in1 = CONVERT_TO_IMAGE_STRUCT(in1);
Image in2 = CONVERT_TO_IMAGE_STRUCT(in2);
Image out = CONVERT_TO_IMAGE_STRUCT(out);
VEC_DATA_TYPE(DATA_TYPE_OUT, 16)
in_a = CONVERT(vload16(0, (__global DATA_TYPE_IN1 *)in1.ptr), VEC_DATA_TYPE(DATA_TYPE_OUT, 16));
VEC_DATA_TYPE(DATA_TYPE_OUT, 16)
in_b = CONVERT(vload16(0, (__global DATA_TYPE_IN2 *)in2.ptr), VEC_DATA_TYPE(DATA_TYPE_OUT, 16));
vstore16(CONVERT_SAT(abs_diff(in_a, in_b), VEC_DATA_TYPE(DATA_TYPE_OUT, 16)), 0, (__global DATA_TYPE_OUT *)out.ptr);
}
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