diff options
Diffstat (limited to 'src/core/CL/cl_kernels/nhwc/scale_quantized.cl')
-rw-r--r-- | src/core/CL/cl_kernels/nhwc/scale_quantized.cl | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/nhwc/scale_quantized.cl b/src/core/CL/cl_kernels/nhwc/scale_quantized.cl new file mode 100644 index 0000000000..de9bb607b0 --- /dev/null +++ b/src/core/CL/cl_kernels/nhwc/scale_quantized.cl @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2018-2021 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_asymm.h" +#include "warp_helpers_quantized.h" + +#if defined(DEPTH_OUT) +/** Performs scale on an image interpolating with the BILINEAR method. (NHWC) + * + * @note Sampling policy to be used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT + * @note Scale value for QASYMM8 data type to used is passed as -DSCALE=<VALUE> e.g. -DSCALE=0.5 + * @note Offset value for QASYMM8 data type to used is passed as -DOFFSET=<VALUE> e.g. -DOFFSET=1 + * @note If border mode replicate is used, is should be passed as -DBORDER_MODE_REPLICATE + * @note Output tensor's depth should be given as a preprocessor argument using -DDEPTH_OUT=size. e.g. -DDEPTH=16 + * @note The value to be used at the edges of the images shoud be given as a preprocessor argument using -DCONSTANT_VALUE=value. + * + * @param[in] in_ptr Pointer to the source image. Supported data types: QASYMM8. + * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) + * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) + * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] in_stride_z Stride of the source image in Z dimension (in bytes) + * @param[in] in_step_z src_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image + * @param[out] out_ptr Pointer to the destination image. Supported data types: same as @p in_ptr + * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) + * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) + * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] out_stride_z Stride of the destination image in Z dimension (in bytes) + * @param[in] out_step_z dst_stride_y * number of elements along Z processed per workitem(in bytes) + * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image + * @param[in] input_width Input image width + * @param[in] input_height Input image height + * @param[in] scale_x The scale factor along x dimension + * @param[in] scale_y The scale factor along y dimension + * @param[in] constant_border_value Constant border value to use + */ +__kernel void scale_bilinear_quantized_nhwc( + TENSOR4D_DECLARATION(in), + TENSOR4D_DECLARATION(out), + const float input_width, + const float input_height, + const float scale_x, + const float scale_y) +{ + Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0); + Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT); + +#ifdef SAMPLING_POLICY_TOP_LEFT + const float new_x = get_global_id(1) * scale_x; + const float new_y = (get_global_id(2) % DEPTH_OUT) * scale_y; +#elif SAMPLING_POLICY_CENTER + const float new_x = (get_global_id(1) + 0.5f) * scale_x - 0.5f; + const float new_y = ((get_global_id(2) % DEPTH_OUT) + 0.5f) * scale_y - 0.5f; +#else /* SAMPLING_POLICY */ +#error("Unsupported sampling policy"); +#endif /* SAMPLING_POLICY */ + + const float new_xf = floor(new_x); + const float new_yf = floor(new_y); + const float clamped_x = clamp(new_xf, 0.0f, input_width - 1); + const float clamped_x1 = clamp(new_xf + 1, 0.0f, input_width - 1); + const float clamped_y = clamp(new_yf, 0.0f, input_height - 1); + const float clamped_y1 = clamp(new_yf + 1, 0.0f, input_height - 1); + +#ifndef BORDER_MODE_REPLICATE + const bool check_x = (0.f <= new_xf && new_xf < input_width); + const bool check_x1 = (-1.f <= new_xf && new_xf < input_width - 1); + const bool check_y = (0.f <= new_yf && new_yf < input_height); + const bool check_y1 = (-1.f <= new_yf && new_yf < input_height - 1); + const int ins_0 = select((int)(CONSTANT_VALUE), (int)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y), + (get_global_id(2) / DEPTH_OUT)))), + check_x && check_y); + const int ins_1 = select((int)(CONSTANT_VALUE), (int)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y), + (get_global_id(2) / DEPTH_OUT)))), + check_x1 && check_y); + const int ins_2 = select((int)(CONSTANT_VALUE), (int)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y1), + (get_global_id(2) / DEPTH_OUT)))), + check_x && check_y1); + const int ins_3 = select((int)(CONSTANT_VALUE), (int)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y1), + (get_global_id(2) / DEPTH_OUT)))), + check_x1 && check_y1); + int4 ins = (int4)(ins_0, ins_1, ins_2, ins_3); +#else /* BORDER_MODE_REPLICATE */ + int4 ins = (int4)(*((__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)))); +#endif /* BORDER_MODE_REPLICATE */ + + const float a = new_x - new_xf; + const float b = 1.f - a; + const float a1 = new_y - new_yf; + const float b1 = 1.f - a1; + const float4 insf32 = convert_float4(ins - (int4)OFFSET) * (float4)SCALE; + + const float fr = ((insf32.s0 * b * b1) + (insf32.s1 * a * b1) + (insf32.s2 * b * a1) + (insf32.s3 * a * a1)); + + DATA_TYPE res = CONVERT_SAT(convert_int_sat_rtp(fr / SCALE) + OFFSET, DATA_TYPE); + + *((__global DATA_TYPE *)out.ptr) = res; +} +#endif /* defined(DEPTH_OUT) */
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