| /* |
| * Copyright (c) 2017-2021 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" |
| #include "warp_helpers.h" |
| |
| #ifndef DEPTH_OUT |
| /** Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation. |
| * |
| * This kernel performs remapping with this method of pixel coordinate translation: |
| * out(x,y) = in(mapx(x,y), mapy(x,y)); |
| * |
| * @param[in] in_ptr Pointer to the source image. Supported data types: U8. |
| * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| * @param[in] in_step_x in_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| * @param[in] in_step_y in_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] in_offset_first_element_in_bytes Offset of the first element in the source image |
| * @param[out] out_ptr Pointer to the destination image. Supported data types: U8. |
| * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| * @param[in] out_step_x out_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| * @param[in] out_step_y out_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] out_offset_first_element_in_bytes Offset of the first element in the destination image |
| * @param[in] mapx_ptr Pointer to the x remapping image. Supported data types: F32. |
| * @param[in] mapx_stride_x Stride of the remapping image in X dimension (in bytes) |
| * @param[in] mapx_step_x mapx_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] mapx_stride_y Stride of the remapping image in Y dimension (in bytes) |
| * @param[in] mapx_step_y mapy_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] mapx_offset_first_element_in_bytes Offset of the first element in the remapping image |
| * @param[in] mapy_ptr Pointer to the x remapping image. Supported data types: F32. |
| * @param[in] mapy_stride_x Stride of the remapping image in X dimension (in bytes) |
| * @param[in] mapy_step_x mapy_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] mapy_stride_y Stride of the remapping image in Y dimension (in bytes) |
| * @param[in] mapy_step_y mapy_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] mapy_offset_first_element_in_bytes Offset of the first element in the remapping image |
| * @param[in] width Width of the input image |
| * @param[in] height Height of the input image |
| */ |
| __kernel void remap_nearest_neighbour_nchw( |
| IMAGE_DECLARATION(in), |
| IMAGE_DECLARATION(out), |
| IMAGE_DECLARATION(mapx), |
| IMAGE_DECLARATION(mapy), |
| const float width, |
| const float height) |
| { |
| Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); |
| Image out = CONVERT_TO_IMAGE_STRUCT(out); |
| Image mapx = CONVERT_TO_IMAGE_STRUCT(mapx); |
| Image mapy = CONVERT_TO_IMAGE_STRUCT(mapy); |
| |
| float4 mapx_coords = vload4(0, (__global float *)mapx.ptr); |
| float4 mapy_coords = vload4(0, (__global float *)mapy.ptr); |
| float8 map_coords = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1, |
| mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3); |
| |
| vstore4(read_texels4(&in, convert_int8(clamp_to_border(map_coords, width, height))), 0, out.ptr); |
| } |
| |
| /** Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation. |
| * |
| * This kernel performs remapping with this method of pixel coordinate translation: |
| * out(x,y) = in(mapx(x,y), mapy(x,y)); |
| * |
| * @param[in] in_ptr Pointer to the source image. Supported data types: U8. |
| * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| * @param[in] in_step_x in_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| * @param[in] in_step_y in_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] in_offset_first_element_in_bytes Offset of the first element in the source image |
| * @param[out] out_ptr Pointer to the destination image. Supported data types: U8. |
| * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| * @param[in] out_step_x out_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| * @param[in] out_step_y out_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] out_offset_first_element_in_bytes Offset of the first element in the destination image |
| * @param[in] mapx_ptr Pointer to the x remapping image. Supported data types: F32. |
| * @param[in] mapx_stride_x Stride of the remapping image in X dimension (in bytes) |
| * @param[in] mapx_step_x mapx_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] mapx_stride_y Stride of the remapping image in Y dimension (in bytes) |
| * @param[in] mapx_step_y mapy_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] mapx_offset_first_element_in_bytes Offset of the first element in the remapping image |
| * @param[in] mapy_ptr Pointer to the x remapping image. Supported data types: F32. |
| * @param[in] mapy_stride_x Stride of the remapping image in X dimension (in bytes) |
| * @param[in] mapy_step_x mapy_stride_x * number of elements along X processed per work item (in bytes) |
| * @param[in] mapy_stride_y Stride of the remapping image in Y dimension (in bytes) |
| * @param[in] mapy_step_y mapy_stride_y * number of elements along Y processed per work item (in bytes) |
| * @param[in] mapy_offset_first_element_in_bytes Offset of the first element in the remapping image |
| * @param[in] width Width of the input image |
| * @param[in] height Height of the input image |
| */ |
| __kernel void remap_bilinear_nchw( |
| IMAGE_DECLARATION(in), |
| IMAGE_DECLARATION(out), |
| IMAGE_DECLARATION(mapx), |
| IMAGE_DECLARATION(mapy), |
| const float width, |
| const float height) |
| { |
| Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); |
| Image out = CONVERT_TO_IMAGE_STRUCT(out); |
| Image mapx = CONVERT_TO_IMAGE_STRUCT(mapx); |
| Image mapy = CONVERT_TO_IMAGE_STRUCT(mapy); |
| |
| float4 mapx_coords = vload4(0, (__global float *)mapx.ptr); |
| float4 mapy_coords = vload4(0, (__global float *)mapy.ptr); |
| float8 map_coords = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1, |
| mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3); |
| |
| vstore4(bilinear_interpolate(&in, clamp_to_border(map_coords, width, height), width, height), 0, out.ptr); |
| } |
| #endif // DEPTH_OUT |