Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016-2021 Arm Limited. |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 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, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "helpers.h" |
Giorgio Arena | 511771f | 2021-08-19 13:04:56 +0100 | [diff] [blame] | 25 | #include "tile_helpers.h" |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 26 | |
| 27 | /** Transforms four 2D coordinates. This is used to map the output coordinates to the input coordinates. |
| 28 | * |
| 29 | * @param[in] coord 2D coordinates to transform. |
| 30 | * @param[in] scale input/output scale ratio |
| 31 | * |
| 32 | * @return a float8 containing 4 2D transformed values in the input image. |
| 33 | */ |
| 34 | inline const float8 transform_nearest(const float2 coord, const float2 scale) |
| 35 | { |
| 36 | #ifdef SAMPLING_POLICY_TOP_LEFT |
| 37 | const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
| 38 | const float4 new_x = in_x_coords * (float4)(scale.s0); |
| 39 | const float4 new_y = (float4)(coord.s1 * scale.s1); |
| 40 | 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); |
| 41 | #elif SAMPLING_POLICY_CENTER |
| 42 | const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
| 43 | const float4 new_x = (in_x_coords + ((float4)(0.5f))) * (float4)(scale.s0); |
| 44 | const float4 new_y = (float4)((coord.s1 + 0.5f) * scale.s1); |
| 45 | 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); |
| 46 | #else /* SAMPLING_POLICY */ |
| 47 | #error("Unsupported sampling policy"); |
| 48 | #endif /* SAMPLING_POLICY */ |
| 49 | } |
| 50 | |
| 51 | /** Transforms four 2D coordinates. This is used to map the output coordinates to the input coordinates. |
| 52 | * |
| 53 | * @param[in] coord 2D coordinates to transform. |
| 54 | * @param[in] scale input/output scale ratio |
| 55 | * |
| 56 | * @return a float8 containing 4 2D transformed values in the input image. |
| 57 | */ |
| 58 | inline const float8 transform_bilinear(const float2 coord, const float2 scale) |
| 59 | { |
| 60 | const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
| 61 | #ifdef SAMPLING_POLICY_TOP_LEFT |
| 62 | const float4 new_x = in_x_coords * (float4)(scale.s0); |
| 63 | const float4 new_y = (float4)(coord.s1 * scale.s1); |
| 64 | 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); |
| 65 | #elif SAMPLING_POLICY_CENTER |
| 66 | const float4 new_x = (in_x_coords + ((float4)(0.5f))) * (float4)(scale.s0) - (float4)(0.5f); |
| 67 | const float4 new_y = (float4)((coord.s1 + 0.5f) * scale.s1 - 0.5f); |
| 68 | 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); |
| 69 | #else /* SAMPLING_POLICY */ |
| 70 | #error("Unsupported sampling policy"); |
| 71 | #endif /* SAMPLING_POLICY */ |
| 72 | } |
| 73 | |
| 74 | /** Performs an affine transformation on an image interpolating with the NEAREAST NEIGHBOUR method. Input and output are single channel U8 or S16. |
| 75 | * |
| 76 | * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
| 77 | * |
| 78 | * @param[in] in_ptr Pointer to the source image. Supported data types: U8, S16. |
| 79 | * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| 80 | * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 81 | * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| 82 | * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 83 | * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image |
| 84 | * @param[out] out_ptr Pointer to the destination image. Supported data types: U8, S16. (Must be the same as the input) |
| 85 | * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| 86 | * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 87 | * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| 88 | * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 89 | * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 90 | */ |
| 91 | __kernel void scale_nearest_neighbour_nchw( |
| 92 | IMAGE_DECLARATION(in), |
Giorgio Arena | 511771f | 2021-08-19 13:04:56 +0100 | [diff] [blame] | 93 | IMAGE_DECLARATION(out)) |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 94 | { |
Giorgio Arena | 511771f | 2021-08-19 13:04:56 +0100 | [diff] [blame] | 95 | const int x = get_global_id(0); |
| 96 | const int y = get_global_id(1); |
| 97 | |
| 98 | float8 transformed = transform_nearest((float2)(x * VEC_SIZE, y), (float2)(SCALE_X, SCALE_Y)); |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 99 | #ifdef ALIGN_CORNERS |
| 100 | transformed = round(transformed); |
| 101 | #endif // ALIGN_CORNERS |
Giorgio Arena | 511771f | 2021-08-19 13:04:56 +0100 | [diff] [blame] | 102 | |
| 103 | TILE(SELECT_DATA_TYPE(DATA_TYPE), 1, 4, cond); |
| 104 | cond[0].v = CONVERT(((transformed.even < 0) || (transformed.even >= (int)SRC_WIDTH)) || ((transformed.odd < 0) || (transformed.odd >= (int)SRC_HEIGHT)), SELECT_VEC_DATA_TYPE(DATA_TYPE, 4)); |
| 105 | |
| 106 | TILE(int, 1, 4, in_x); |
| 107 | TILE(int, 1, 4, in_y); |
| 108 | in_x[0].v = convert_int4(clamp(transformed.even, 0.f, SRC_WIDTH - 1.f)); |
| 109 | in_y[0].v = convert_int4(clamp(transformed.odd, 0.f, SRC_HEIGHT - 1.f)); |
| 110 | |
| 111 | TILE(DATA_TYPE, 1, VEC_SIZE, out_vals); |
| 112 | LOOP_UNROLLING(int, i, 0, 1, VEC_SIZE, |
| 113 | { |
| 114 | out_vals[0].s[i] = select(*((__global DATA_TYPE *)(in_ptr + in_offset_first_element_in_bytes + in_x[0].s[i] * sizeof(DATA_TYPE) + in_y[0].s[i] * in_stride_y)), (DATA_TYPE)CONSTANT_VALUE, cond[0].s[i]); |
| 115 | }) |
| 116 | |
| 117 | __global uchar *out_addr = out_ptr + out_offset_first_element_in_bytes + x * out_step_x + y * out_stride_y; |
| 118 | |
| 119 | if(x == get_global_size(0) - 1) |
| 120 | { |
| 121 | #if VEC_SIZE == 1 |
| 122 | VSTORE_PARTIAL(VEC_SIZE, VEC_SIZE_LEFTOVER) |
| 123 | (out_vals[0].s[0], 0, (__global DATA_TYPE *)out_addr); |
| 124 | #else // VEC_SIZE == 1 |
| 125 | VSTORE_PARTIAL(VEC_SIZE, VEC_SIZE_LEFTOVER) |
| 126 | (out_vals[0].v, 0, (__global DATA_TYPE *)out_addr); |
| 127 | #endif // VEC_SIZE == 1 |
| 128 | } |
| 129 | else |
| 130 | { |
| 131 | #if VEC_SIZE == 1 |
| 132 | VSTORE(VEC_SIZE) |
| 133 | (out_vals[0].s[0], 0, (__global DATA_TYPE *)out_addr); |
| 134 | #else // VEC_SIZE == 1 |
| 135 | VSTORE(VEC_SIZE) |
| 136 | (out_vals[0].v, 0, (__global DATA_TYPE *)out_addr); |
| 137 | #endif // VEC_SIZE == 1 |
| 138 | } |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | /** Performs an affine transformation on an image interpolating with the BILINEAR method. |
| 142 | * |
| 143 | * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
| 144 | * |
| 145 | * @param[in] in_ptr Pointer to the source image. Supported data types: U8, S16. |
| 146 | * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| 147 | * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 148 | * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| 149 | * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 150 | * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image |
| 151 | * @param[out] out_ptr Pointer to the destination image. Supported data types: U8, S16. (Must be the same as the input) |
| 152 | * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| 153 | * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 154 | * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| 155 | * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 156 | * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 157 | */ |
| 158 | __kernel void scale_bilinear_nchw( |
| 159 | IMAGE_DECLARATION(in), |
Giorgio Arena | 511771f | 2021-08-19 13:04:56 +0100 | [diff] [blame] | 160 | IMAGE_DECLARATION(out)) |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 161 | { |
Giorgio Arena | 511771f | 2021-08-19 13:04:56 +0100 | [diff] [blame] | 162 | const int x = get_global_id(0); |
| 163 | const int y = get_global_id(1); |
| 164 | |
| 165 | TILE(float, 1, 8, trans_coords); |
| 166 | TILE(float, 1, 8, floor_coords); |
| 167 | TILE(int, 1, 16, in_x); |
| 168 | TILE(int, 1, 16, in_y); |
| 169 | |
| 170 | trans_coords[0].v = transform_bilinear((float2)(x * VEC_SIZE, y), (float2)(SCALE_X, SCALE_Y)); |
| 171 | floor_coords[0].v = floor(trans_coords[0].v); |
| 172 | |
| 173 | LOOP_UNROLLING(int, i, 0, 1, 4, |
| 174 | { |
| 175 | LOOP_UNROLLING(int, j, 0, 1, 4, |
| 176 | { |
| 177 | in_x[0].s[i * 4 + j] = floor_coords[0].s[i * 2 + 0] + (j % 2); |
| 178 | in_y[0].s[i * 4 + j] = floor_coords[0].s[i * 2 + 1] + (j > 1); |
| 179 | }) |
| 180 | }) |
| 181 | |
| 182 | #if defined(BORDER_MODE_CONSTANT) |
| 183 | TILE(SELECT_DATA_TYPE(DATA_TYPE), 1, 16, cond); |
| 184 | cond[0].v = CONVERT(((in_x[0].v < 0) || (in_x[0].v >= (int)SRC_WIDTH)) || ((in_y[0].v < 0) || (in_y[0].v >= (int)SRC_HEIGHT)), SELECT_VEC_DATA_TYPE(DATA_TYPE, 16)); |
| 185 | #endif // defined(BORDER_MODE_CONSTANT) |
| 186 | |
| 187 | in_x[0].v = clamp(in_x[0].v, 0, (int16)((int)SRC_WIDTH - 1)); |
| 188 | in_y[0].v = clamp(in_y[0].v, 0, (int16)((int)SRC_HEIGHT - 1)); |
| 189 | |
| 190 | TILE(DATA_TYPE, 1, 16, in_vals); |
| 191 | |
| 192 | // Loads the values from the input image |
| 193 | #if defined(BORDER_MODE_CONSTANT) |
| 194 | LOOP_UNROLLING(int, i, 0, 1, 16, |
| 195 | { |
| 196 | in_vals[0].s[i] = select(*((__global DATA_TYPE *)(in_ptr + in_offset_first_element_in_bytes + in_x[0].s[i] * sizeof(DATA_TYPE) + in_y[0].s[i] * (int)in_stride_y)), (DATA_TYPE)CONSTANT_VALUE, cond[0].s[i]); |
| 197 | }) |
| 198 | #else // defined(BORDER_MODE_CONSTANT) |
| 199 | LOOP_UNROLLING(int, i, 0, 1, 16, |
| 200 | { |
| 201 | in_vals[0].s[i] = *((__global DATA_TYPE *)(in_ptr + in_offset_first_element_in_bytes + in_x[0].s[i] * sizeof(DATA_TYPE) + in_y[0].s[i] * (int)in_stride_y)); |
| 202 | }) |
| 203 | #endif // defined(BORDER_MODE_CONSTANT) |
| 204 | |
| 205 | TILE(float, 1, 8, a); |
| 206 | TILE(float, 1, 8, b); |
| 207 | |
| 208 | a[0].v = trans_coords[0].v - floor_coords[0].v; |
| 209 | b[0].v = ((float8)(1.f)) - a[0].v; |
| 210 | |
| 211 | #if defined(OFFSET) && defined(SCALE) |
| 212 | TILE(float, 1, 16, in_vals_f32); |
| 213 | TILE(float, 1, 4, out_vals_f32); |
| 214 | |
| 215 | in_vals_f32[0].v = convert_float16(convert_int16(in_vals[0].v) - (int16)OFFSET) * (float16)SCALE; |
| 216 | |
| 217 | // Bilinear interpolation: (in0 * b0 * b1) + (in1 * a0 * b1) + (in2 * b0 * a1) + (in3 * a0 * a1) |
| 218 | // (in4 * b2 * b3) + (in5 * a2 * b3) + (in6 * b2 * a3) + (in7 * a2 * a3) |
| 219 | // (in8 * b4 * b5) + (in9 * a4 * b5) + (in10 * b4 * a5) + (in11 * a4 * a5) |
| 220 | // (in12 * b6 * b7) + (in13 * a6 * b7) + (in14 * b6 * a7) + (in15 * a6 * a7) |
| 221 | LOOP_UNROLLING(int, i, 0, 1, 4, |
| 222 | { |
| 223 | out_vals_f32[0].s[i] = (in_vals_f32[0].s[i * 4 + 0] * b[0].s[i * 2] * b[0].s[i * 2 + 1]) + (in_vals_f32[0].s[i * 4 + 1] * a[0].s[i * 2] * b[0].s[i * 2 + 1]) + (in_vals_f32[0].s[i * 4 + 2] * b[0].s[i * 2] * a[0].s[i * 2 + 1]) + (in_vals_f32[0].s[i * 4 + 3] * a[0].s[i * 2] * a[0].s[i * 2 + 1]); |
| 224 | }) |
| 225 | |
| 226 | TILE(DATA_TYPE, 1, 4, out_vals_4); |
| 227 | TILE(DATA_TYPE, 1, VEC_SIZE, out_vals); |
| 228 | |
| 229 | out_vals_4[0].v = CONVERT_SAT(convert_int4_sat_rtp(out_vals_f32[0].v / (float)SCALE) + OFFSET, VEC_DATA_TYPE(DATA_TYPE, 4)); |
| 230 | |
| 231 | LOOP_UNROLLING(int, i, 0, 1, VEC_SIZE, |
| 232 | { |
| 233 | out_vals[0].s[i] = out_vals_4[0].s[i]; |
| 234 | }) |
| 235 | #else // defined(OFFSET) && defined(SCALE) |
| 236 | |
| 237 | TILE(DATA_TYPE, 1, VEC_SIZE, out_vals); |
| 238 | |
| 239 | // Bilinear interpolation: (in0 * b0 * b1) + (in1 * a0 * b1) + (in2 * b0 * a1) + (in3 * a0 * a1) |
| 240 | // (in4 * b2 * b3) + (in5 * a2 * b3) + (in6 * b2 * a3) + (in7 * a2 * a3) |
| 241 | // (in8 * b4 * b5) + (in9 * a4 * b5) + (in10 * b4 * a5) + (in11 * a4 * a5) |
| 242 | // (in12 * b6 * b7) + (in13 * a6 * b7) + (in14 * b6 * a7) + (in15 * a6 * a7) |
| 243 | LOOP_UNROLLING(int, i, 0, 1, VEC_SIZE, |
| 244 | { |
| 245 | out_vals[0].s[i] = (in_vals[0].s[i * 4 + 0] * b[0].s[i * 2] * b[0].s[i * 2 + 1]) + (in_vals[0].s[i * 4 + 1] * a[0].s[i * 2] * b[0].s[i * 2 + 1]) + (in_vals[0].s[i * 4 + 2] * b[0].s[i * 2] * a[0].s[i * 2 + 1]) + (in_vals[0].s[i * 4 + 3] * a[0].s[i * 2] * a[0].s[i * 2 + 1]); |
| 246 | }) |
| 247 | #endif // defined(OFFSET) && defined(SCALE) |
| 248 | |
| 249 | __global uchar *out_addr = out_ptr + out_offset_first_element_in_bytes + x * out_step_x + y * out_stride_y; |
| 250 | |
| 251 | if(x == get_global_size(0) - 1) |
| 252 | { |
| 253 | #if VEC_SIZE == 1 |
| 254 | VSTORE_PARTIAL(VEC_SIZE, VEC_SIZE_LEFTOVER) |
| 255 | (out_vals[0].s[0], 0, (__global DATA_TYPE *)out_addr); |
| 256 | #else // VEC_SIZE == 1 |
| 257 | VSTORE_PARTIAL(VEC_SIZE, VEC_SIZE_LEFTOVER) |
| 258 | (out_vals[0].v, 0, (__global DATA_TYPE *)out_addr); |
| 259 | #endif // VEC_SIZE == 1 |
| 260 | } |
| 261 | else |
| 262 | { |
| 263 | #if VEC_SIZE == 1 |
| 264 | VSTORE(VEC_SIZE) |
| 265 | (out_vals[0].s[0], 0, (__global DATA_TYPE *)out_addr); |
| 266 | #else // VEC_SIZE == 1 |
| 267 | VSTORE(VEC_SIZE) |
| 268 | (out_vals[0].v, 0, (__global DATA_TYPE *)out_addr); |
| 269 | #endif // VEC_SIZE == 1 |
| 270 | } |
Adnan AlSinan | 7075fe2 | 2021-07-05 13:12:52 +0100 | [diff] [blame] | 271 | } |