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Diffstat (limited to 'src/core/CL/cl_kernels/common/quantization_layer.cl')
-rw-r--r-- | src/core/CL/cl_kernels/common/quantization_layer.cl | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/common/quantization_layer.cl b/src/core/CL/cl_kernels/common/quantization_layer.cl new file mode 100644 index 0000000000..69cc288c25 --- /dev/null +++ b/src/core/CL/cl_kernels/common/quantization_layer.cl @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2017-2021 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.h" + +#define CONVERT_RTE(x, type) (convert_##type##_rte((x))) +#define CONVERT_RTE_VEC_STR(x, type, size) (convert_##type##size##_rte((x))) +#define CONVERT_RTE_VEC(x, type, size) CONVERT_RTE_VEC_STR(x, type, size) + +#if defined(VEC_SIZE) && defined(DATA_TYPE_IN) && defined(DATA_TYPE_OUT) && defined(SCALE) && defined(OFFSET) && defined(MIN_QUANT_VAL) && defined(MAX_QUANT_VAL) + +/** This performs the quantization of floating point inputs or 8-bit quantized integers to 8-bit integers. + * + * @note Input data type should be given as a preprocessor argument using -DDATA_TYPE_IN=type. e.g. -DDATA_TYPE=short + * @note Output data type should be given as a preprocessor argument using -DDATA_TYPE_OUT=type. e.g. -DDATA_TYPE=short + * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16 + * @note Quantization scale should be given as a preprocessor argument using -DSCALE=scale. e.g. -DSCALE=0.125 + * @note Quantization offset should be given as a preprocessor argument using -DOFFSET=offset. e.g. -DOFFSET=125 + * @note Minimum value for quantized type should be given as a preprocessor argument using -DMIN_QUANT_VAL=value. e.g. -DMIN_QUANT_VAL=0 + * @note Maximum value for quantized type should be given as a preprocessor argument using -DMAX_QUANT_VAL=value. e.g. -DMAXIN_QUANT_VAL=255 + * @note If the input data type if a floating point (F16 or F32) the preprocessor argument should be give as -DIS_FLOAT + * + * @param[in] input_ptr Pointer to the source tensor. Supported data types: QASYMM8/QASYMM8_SIGNED/F16/F32 + * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) + * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) + * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor + * @param[out] output_ptr Pointer to the destination tensor. Supported data types: QASYMM8/QASYMM8_SIGNED + * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) + * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) + * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor + */ +__kernel void quantization_layer( + TENSOR3D_DECLARATION(input), + TENSOR3D_DECLARATION(output)) +{ + // Get pixels pointer + Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); + Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); + +#if defined(VEC_SIZE) && defined(LAST_ACCESSED_X) + // Check if access on width gets out of bounds + // If it does shift access vector to access elements within bounds + const int xi = (int)(get_global_id(0) * VEC_SIZE); + input.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * input_stride_x; + output.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * output_stride_x; + + // Load data +#if defined(IS_FLOAT) + // Load data + VEC_DATA_TYPE(DATA_TYPE_IN, VEC_SIZE) + val_float = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE_IN *)input.ptr); + + // Create scale and offset vectors + const VEC_DATA_TYPE(DATA_TYPE_IN, VEC_SIZE) vscale = SCALE; + const VEC_DATA_TYPE(int, VEC_SIZE) voffset = OFFSET; +#else // defined(IS_FLOAT) + // Load data + VEC_DATA_TYPE(DATA_TYPE_IN, VEC_SIZE) + val = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE_IN *)input.ptr); + + const VEC_DATA_TYPE(float, VEC_SIZE) + val_float = CONVERT(val, VEC_DATA_TYPE(float, VEC_SIZE)); + + // Create scale and offset vectors + const VEC_DATA_TYPE(float, VEC_SIZE) vscale = SCALE; + const VEC_DATA_TYPE(int, VEC_SIZE) voffset = OFFSET; +#endif // defined(IS_FLOAT) + + // Quantize + VEC_DATA_TYPE(int, VEC_SIZE) + res = CLAMP(CONVERT_RTE_VEC(val_float / vscale, int, VEC_SIZE) + voffset, MIN_QUANT_VAL, MAX_QUANT_VAL); + + // Store result + VSTORE(VEC_SIZE) + (CONVERT(res, VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE)), 0, (__global DATA_TYPE_OUT *)output.ptr); +#else //!defined(VEC_SIZE) || !defined(LAST_ACCESSED_X) + *((__global DATA_TYPE_OUT *)(output.ptr)) = (DATA_TYPE_OUT)CLAMP(CONVERT_RTE(((float) * (__global DATA_TYPE_IN *)input.ptr) / ((float)SCALE), int) + (int)OFFSET, MIN_QUANT_VAL, MAX_QUANT_VAL); +#endif // defined(VEC_SIZE) && defined(LAST_ACCESSED_X) +} +#endif // defined(VEC_SIZE) && defined(DATA_TYPE_IN) && defined(DATA_TYPE_OUT) && defined(SCALE) && defined(OFFSET) && defined(MIN_QUANT_VAL) && defined(MAX_QUANT_VAL) |