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Diffstat (limited to 'src/core/CL/cl_kernels/warp_perspective.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/warp_perspective.cl | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/src/core/CL/cl_kernels/warp_perspective.cl b/src/core/CL/cl_kernels/warp_perspective.cl deleted file mode 100644 index 6ffb7e4a00..0000000000 --- a/src/core/CL/cl_kernels/warp_perspective.cl +++ /dev/null @@ -1,128 +0,0 @@ -/* - * 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" -#include "warp_helpers.h" - -/** Returns the perspective matrix */ -inline const float16 build_perspective_mtx() -{ - return (float16)(MAT0, MAT1, MAT2, MAT3, MAT4, MAT5, MAT6, MAT7, MAT8, 0, 0, 0, (float4)0); -} - -/** Transforms four 2D coordinates using the formula: - * - * x0 = M[1][1] * x + M[1][2] * y + M[1][3] - * y0 = M[2][1] * x + M[2][2] * y + M[2][3] - * z0 = M[3][1] * x + M[3][2] * y + M[3][3] - * - * (x0/z0,y0/z0) - * - * @param[in] coord 2D coordinate to transform. - * @param[in] mtx perspective matrix - * - * @return a vector float8 containing four 2D transformed values. - */ -inline const float8 apply_perspective_transform(const float2 coord, const float16 mtx) -{ - const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); - // transform [z,z+1,z+2,z+3] - const float4 z = (float4)mad(in_x_coords, (float4)(mtx.s2), mad((float4)(coord.s1), (float4)(mtx.s5), (float4)(mtx.s8))); - // NOTE: Do not multiply x&y by 1.f/Z as this will result in loss of accuracy and mismatches with VX reference implementation - // transform [x,x+1,x+2,x+3] - const float4 new_x = (float4)mad(in_x_coords, (float4)(mtx.s0), mad((float4)(coord.s1), (float4)(mtx.s3), (float4)(mtx.s6))) / z; - // transform [y,y+1,y+2,y+3] - const float4 new_y = (float4)mad(in_x_coords, (float4)(mtx.s1), mad((float4)(coord.s1), (float4)(mtx.s4), (float4)(mtx.s7))) / z; - return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); -} - -/** Performs perspective transformation on an image interpolating with the NEAREAST NEIGHBOUR method. Input and output are single channel U8. - * - * This kernel performs perspective transform with a 3x3 Matrix M with this method of pixel coordinate translation: - * x0 = M[1][1] * x + M[1][2] * y + M[1][3] - * y0 = M[2][1] * x + M[2][2] * y + M[2][3] - * z0 = M[3][1] * x + M[3][2] * y + M[3][3] - * - * output(x,y) = input(x0/z0,y0/z0) - * - * @attention The matrix coefficients need to be passed at compile time:\n - * const char build_options [] = "-DMAT0=1 -DMAT1=2 -DMAT2=3 -DMAT3=4 -DMAT4=5 -DMAT5=6 -DMAT6=7 -DMAT7=8 -DMAT8=9"\n - * clBuildProgram( program, 0, NULL, build_options, NULL, NULL); - * - * @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] width Width of the destination image - * @param[in] height Height of the destination image - */ -__kernel void warp_perspective_nearest_neighbour( - IMAGE_DECLARATION(in), - IMAGE_DECLARATION(out), - const int width, - const int height) -{ - Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); - Image out = CONVERT_TO_IMAGE_STRUCT(out); - vstore4(read_texels4(&in, convert_int8_rtn(clamp_to_border(apply_perspective_transform(get_current_coords(), build_perspective_mtx()), width, height))), 0, out.ptr); -} - -/** Performs a perspective transform on an image interpolating with the BILINEAR method. Input and output are single channel U8. - * - * @attention The matrix coefficients need to be passed at compile time:\n - * const char build_options [] = "-DMAT0=1 -DMAT1=2 -DMAT2=3 -DMAT3=4 -DMAT4=5 -DMAT5=6 -DMAT6=7 -DMAT7=8 -DMAT8=9"\n - * clBuildProgram( program, 0, NULL, build_options, NULL, NULL); - * - * @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] width Width of the destination image - * @param[in] height Height of the destination image - */ -__kernel void warp_perspective_bilinear( - IMAGE_DECLARATION(in), - IMAGE_DECLARATION(out), - const int width, - const int height) -{ - Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); - Image out = CONVERT_TO_IMAGE_STRUCT(out); - vstore4(bilinear_interpolate(&in, apply_perspective_transform(get_current_coords(), build_perspective_mtx()), width, height), 0, out.ptr); -} |