| /* |
| * 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" |
| |
| #ifdef DEPTH_OUT |
| /** Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation. |
| * Also applies constant border value, "border_val", if "CONSTANT_BORDER" is set. |
| * |
| * 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,F16. |
| * @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,F16. |
| * @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 |
| * @param[in] border_val Value to use for border around input tensor when in CONSTANT border is selected |
| */ |
| __kernel void remap_nearest_neighbour_nhwc( |
| TENSOR4D_DECLARATION(in), |
| TENSOR4D_DECLARATION(out), |
| TENSOR4D_DECLARATION(mapx), |
| TENSOR4D_DECLARATION(mapy), |
| const float width, |
| const float height |
| #ifdef CONSTANT_BORDER |
| , |
| const DATA_TYPE border_val |
| #endif // CONSTANT_BORDER |
| ) |
| { |
| Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0); |
| Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT); |
| Tensor4D mapx = CONVERT_TO_TENSOR4D_STRUCT(mapx, DEPTH_OUT); |
| Tensor4D mapy = CONVERT_TO_TENSOR4D_STRUCT(mapy, DEPTH_OUT); |
| |
| float mapx_coord = (float) * (__global float *)mapx.ptr; |
| float mapy_coord = (float) * (__global float *)mapy.ptr; |
| |
| #ifdef CONSTANT_BORDER |
| if(mapx_coord < 0 || mapx_coord > width - 1 || mapy_coord < 0 || mapy_coord > height - 1) |
| { |
| *((__global DATA_TYPE *)out.ptr) = border_val; |
| return; |
| } |
| #else // CONSTANT_BORDER |
| mapx_coord = clamp(mapx_coord, 0.0f, width - 1); |
| mapy_coord = clamp(mapy_coord, 0.0f, height - 1); |
| #endif // CONSTANT_BORDER |
| *((__global DATA_TYPE *)out.ptr) = *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(mapx_coord), convert_int(mapy_coord), (get_global_id(2) / DEPTH_OUT))); |
| } |
| |
| /** Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation. |
| * Also applies constant border value, "border_val", if "CONSTANT_BORDER" is set. |
| * |
| * 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,F16. |
| * @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,F16. |
| * @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 |
| * @param[in] border_val Value to use for border around input tensor when in CONSTANT border is selected |
| */ |
| __kernel void remap_bilinear_nhwc( |
| TENSOR4D_DECLARATION(in), |
| TENSOR4D_DECLARATION(out), |
| TENSOR4D_DECLARATION(mapx), |
| TENSOR4D_DECLARATION(mapy), |
| const float width, |
| const float height |
| #ifdef CONSTANT_BORDER |
| , |
| const DATA_TYPE border_val |
| #endif // CONSTANT_BORDER |
| ) |
| { |
| Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0); |
| Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT); |
| Tensor4D mapx = CONVERT_TO_TENSOR4D_STRUCT(mapx, DEPTH_OUT); |
| Tensor4D mapy = CONVERT_TO_TENSOR4D_STRUCT(mapy, DEPTH_OUT); |
| |
| float mapx_coord = (float) * (__global float *)mapx.ptr; |
| float mapy_coord = (float) * (__global float *)mapy.ptr; |
| |
| #ifdef CONSTANT_BORDER |
| if(mapx_coord < 0 || mapx_coord > width - 1 || mapy_coord < 0 || mapy_coord > height - 1) |
| { |
| *((__global DATA_TYPE *)out.ptr) = border_val; |
| return; |
| } |
| #endif // CONSTANT_BORDER |
| |
| const float new_xf = floor(mapx_coord); |
| const float new_yf = floor(mapy_coord); |
| const float clamped_x = clamp(new_xf, 0.0f, width - 1); |
| const float clamped_x1 = clamp(new_xf + 1, 0.0f, width - 1); |
| const float clamped_y = clamp(new_yf, 0.0f, height - 1); |
| const float clamped_y1 = clamp(new_yf + 1, 0.0f, height - 1); |
| |
| float4 ins = (float4)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))), |
| *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))), |
| *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y1), (get_global_id(2) / DEPTH_OUT))), |
| *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y1), (get_global_id(2) / DEPTH_OUT)))); |
| |
| const float a = mapx_coord - new_xf; |
| const float b = 1.f - a; |
| const float a1 = mapy_coord - new_yf; |
| const float b1 = 1.f - a1; |
| const float fr = ((ins.s0 * b * b1) + (ins.s1 * a * b1) + (ins.s2 * b * a1) + (ins.s3 * a * a1)); |
| |
| *((__global DATA_TYPE *)out.ptr) = CONVERT(fr, DATA_TYPE); |
| } |
| |
| #endif // DEPTH_OUT |
