2 * Copyright (c) 2016, 2017 ARM Limited.
4 * SPDX-License-Identifier: MIT
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7 * of this software and associated documentation files (the "Software"), to
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11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 /** This function performs table lookup on U8 input/output images.
28 * Global Workgroup Size [ DIV_CEIL(width, 8), height ]
31 * @param[in] src_ptr Pointer to the source image. Supported data types: U8
32 * @param[in] src_stride_x Stride of the source image in X dimension (in bytes)
33 * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
34 * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes)
35 * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
36 * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image
37 * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8
38 * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes)
39 * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
40 * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes)
41 * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
42 * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image
43 * @param[in] lut LUT table. Supported data types: U8
45 __kernel void tablelookup_U8(
46 IMAGE_DECLARATION(src),
47 IMAGE_DECLARATION(dst),
50 Image src = CONVERT_TO_IMAGE_STRUCT(src);
51 Image dst = CONVERT_TO_IMAGE_STRUCT(dst);
54 uchar8 data = vload8(0, src.ptr);
57 uchar8 lut_data = (uchar8)(lut[data.s0], lut[data.s1], lut[data.s2], lut[data.s3],
58 lut[data.s4], lut[data.s5], lut[data.s6], lut[data.s7]);
61 vstore8(lut_data, 0, dst.ptr);
64 /** This function performs table lookup on S16 input/output images.
66 * Global Workgroup Size [ DIV_CEIL(width, 8), height ]
68 * @param[in] src_ptr Pointer to the source image. Supported data types: S16
69 * @param[in] src_stride_x Stride of the source image in X dimension (in bytes)
70 * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
71 * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes)
72 * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
73 * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image
74 * @param[out] dst_ptr Pointer to the destination image. Supported data types: S16
75 * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes)
76 * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
77 * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes)
78 * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
79 * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image
80 * @param[in] lut LUT table. Supported data types: S16
81 * @param[in] offset LUT offset
82 * @param[in] count Number of elements in the LUT
84 __kernel void tablelookup_S16(
85 IMAGE_DECLARATION(src),
86 IMAGE_DECLARATION(dst),
91 Image src = CONVERT_TO_IMAGE_STRUCT(src);
92 Image dst = CONVERT_TO_IMAGE_STRUCT(dst);
95 short8 data = vload8(0, (__global short *)src.ptr);
97 /* Load output data */
98 int8 out_data = convert_int8(vload8(0, (__global short *)dst.ptr));
100 /* Calculate index */
101 int8 index = convert_int8(data) + (int8)(offset);
102 int8 cond = (index >= 0 && index < (int8)count);
103 index = select(0, index, cond);
106 int8 lut_data = (int8)(lut[index.s0], lut[index.s1], lut[index.s2], lut[index.s3],
107 lut[index.s4], lut[index.s5], lut[index.s6], lut[index.s7]);
109 /* Select output data depending on condition */
110 lut_data = select(out_data, lut_data, cond);
113 vstore8(convert_short8(lut_data), 0, (__global short *)dst.ptr);