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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"
/** This function accumulates an input image into output image.
*
* @param[in] input_ptr Pointer to the source image. Supported data types: U8
* @param[in] input_stride_x Stride of the source image in X dimension (in bytes)
* @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] input_stride_y Stride of the source image in Y dimension (in bytes)
* @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image
* @param[out] accu_ptr Pointer to the destination image. Supported data types: S16
* @param[in] accu_stride_x Stride of the destination image in X dimension (in bytes)
* @param[in] accu_step_x accu_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] accu_stride_y Stride of the destination image in Y dimension (in bytes)
* @param[in] accu_step_y accu_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] accu_offset_first_element_in_bytes The offset of the first element in the destination image
*/
__kernel void accumulate(
IMAGE_DECLARATION(input),
IMAGE_DECLARATION(accu))
{
// Get pixels pointer
Image input = CONVERT_TO_IMAGE_STRUCT(input);
Image accu = CONVERT_TO_IMAGE_STRUCT(accu);
// Load data
uchar16 in_data = vload16(0, input.ptr);
short16 accu_data = vload16(0, (__global short *)accu.ptr);
// Perform accumulation
short16 res = add_sat(convert_short16(in_data), accu_data);
// Store result
vstore16(res, 0, (__global short *)accu.ptr);
}
/** This function accumulates a weighted value from an input image to an output image.
*
* @param[in] input_ptr Pointer to the source image. Supported data types: U8
* @param[in] input_stride_x Stride of the source image in X dimension (in bytes)
* @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] input_stride_y Stride of the source image in Y dimension (in bytes)
* @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image
* @param[out] accu_ptr Pointer to the destination image. Supported data types: S16
* @param[in] accu_stride_x Stride of the destination image in X dimension (in bytes)
* @param[in] accu_step_x accu_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] accu_stride_y Stride of the destination image in Y dimension (in bytes)
* @param[in] accu_step_y accu_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] accu_offset_first_element_in_bytes The offset of the first element in the destination image
* @param[in] alpha The float scalar value with a value in the range of 0 to 1
*/
__kernel void accumulate_weighted(
IMAGE_DECLARATION(input),
IMAGE_DECLARATION(accu),
const float alpha)
{
// Get pixels pointer
Image input = CONVERT_TO_IMAGE_STRUCT(input);
Image accu = CONVERT_TO_IMAGE_STRUCT(accu);
// Load data
const float16 in_data = convert_float16(vload16(0, input.ptr));
const float16 accu_data = convert_float16(vload16(0, accu.ptr));
// Calculate weighted accumulation
const uchar16 res = convert_uchar16((1.0f - alpha) * accu_data + alpha * in_data);
// Store result
vstore16(res, 0, accu.ptr);
}
/** This function accumulates a squared value from an input image to an output image.
*
* @param[in] input_ptr Pointer to the source image. Supported data types: U8
* @param[in] input_stride_x Stride of the source image in X dimension (in bytes)
* @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] input_stride_y Stride of the source image in Y dimension (in bytes)
* @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image
* @param[out] accu_ptr Pointer to the destination image. Supported data types: S16
* @param[in] accu_stride_x Stride of the destination image in X dimension (in bytes)
* @param[in] accu_step_x accu_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] accu_stride_y Stride of the destination image in Y dimension (in bytes)
* @param[in] accu_step_y accu_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] accu_offset_first_element_in_bytes The offset of the first element in the destination image
* @param[in] shift The U32 scalar value with a value in the range of 0 to 15
*/
__kernel void accumulate_squared(
IMAGE_DECLARATION(input),
IMAGE_DECLARATION(accu),
const uint shift)
{
// Get pixels pointer
Image input = CONVERT_TO_IMAGE_STRUCT(input);
Image accu = CONVERT_TO_IMAGE_STRUCT(accu);
// Load data
ushort16 in_data = convert_ushort16(vload16(0, input.ptr));
uint16 accu_data = convert_uint16(vload16(0, (__global short *)accu.ptr));
// Calculate squared accumulation
short16 res = convert_short16_sat(accu_data + convert_uint16((in_data * in_data) >> shift));
// Store result
vstore16(res, 0, (__global short *)accu.ptr);
}
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