1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* Copyright (c) 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"
/** 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(
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);
map_coords += (float8)(0.5f);
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(
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);
}
|
