Blame - src/core/CL/cl_kernels/nchw/remap.cl - ml/ComputeLibrary

Adnan AlSinan

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2021-07-05 13:12:52 +0100

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/*

*

* SPDX-License-Identifier: MIT

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*

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* Permission is hereby granted, free of charge, to any person obtaining a copy

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* of this software and associated documentation files (the "Software"), to

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* deal in the Software without restriction, including without limitation the

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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

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* sell copies of the Software, and to permit persons to whom the Software is

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* furnished to do so, subject to the following conditions:

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*

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* The above copyright notice and this permission notice shall be included in all

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* copies or substantial portions of the Software.

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*

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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

* SOFTWARE.

*/

#include "helpers.h"

#include "warp_helpers.h"

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#ifndef DEPTH_OUT

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/** Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation.

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*

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* This kernel performs remapping with this method of pixel coordinate translation:

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* out(x,y) = in(mapx(x,y), mapy(x,y));

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*

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* @param[in] in_ptr Pointer to the source image. Supported data types: U8.

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* @param[in] in_stride_x Stride of the source image in X dimension (in bytes)

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* @param[in] in_step_x in_stride_x * number of elements along X processed per work item (in bytes)

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* @param[in] in_stride_y Stride of the source image in Y dimension (in bytes)

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* @param[in] in_step_y in_stride_y * number of elements along Y processed per work item (in bytes)

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* @param[in] in_offset_first_element_in_bytes Offset of the first element in the source image

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* @param[out] out_ptr Pointer to the destination image. Supported data types: U8.

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* @param[in] out_stride_x Stride of the destination image in X dimension (in bytes)

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* @param[in] out_step_x out_stride_x * number of elements along X processed per work item (in bytes)

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* @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes)

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* @param[in] out_step_y out_stride_y * number of elements along Y processed per work item (in bytes)

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* @param[in] out_offset_first_element_in_bytes Offset of the first element in the destination image

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* @param[in] mapx_ptr Pointer to the x remapping image. Supported data types: F32.

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* @param[in] mapx_stride_x Stride of the remapping image in X dimension (in bytes)

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* @param[in] mapx_step_x mapx_stride_x * number of elements along X processed per work item (in bytes)

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* @param[in] mapx_stride_y Stride of the remapping image in Y dimension (in bytes)

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* @param[in] mapx_step_y mapy_stride_y * number of elements along Y processed per work item (in bytes)

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* @param[in] mapx_offset_first_element_in_bytes Offset of the first element in the remapping image

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* @param[in] mapy_ptr Pointer to the x remapping image. Supported data types: F32.

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* @param[in] mapy_stride_x Stride of the remapping image in X dimension (in bytes)

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* @param[in] mapy_step_x mapy_stride_x * number of elements along X processed per work item (in bytes)

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* @param[in] mapy_stride_y Stride of the remapping image in Y dimension (in bytes)

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* @param[in] mapy_step_y mapy_stride_y * number of elements along Y processed per work item (in bytes)

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* @param[in] mapy_offset_first_element_in_bytes Offset of the first element in the remapping image

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* @param[in] width Width of the input image

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* @param[in] height Height of the input image

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*/

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__kernel void remap_nearest_neighbour_nchw(

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IMAGE_DECLARATION(in),

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IMAGE_DECLARATION(out),

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IMAGE_DECLARATION(mapx),

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IMAGE_DECLARATION(mapy),

const float width,

const float height)

{

Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in);

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Image out = CONVERT_TO_IMAGE_STRUCT(out);

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Image mapx = CONVERT_TO_IMAGE_STRUCT(mapx);

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Image mapy = CONVERT_TO_IMAGE_STRUCT(mapy);

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float4 mapx_coords = vload4(0, (__global float *)mapx.ptr);

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float4 mapy_coords = vload4(0, (__global float *)mapy.ptr);

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float8 map_coords = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1,

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mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3);

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vstore4(read_texels4(&in, convert_int8(clamp_to_border(map_coords, width, height))), 0, out.ptr);

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}

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/** Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation.

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*

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