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/*
* 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.h"
#if defined(DATA_TYPE) && defined(VEC_SIZE) && defined(OFFSET) && defined(SCALE)
#define TYPE VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE)
#define OFFSET_FLT ((float)OFFSET)
#define SCALE_FLT ((float)SCALE)
#if defined(NUM_CHANNELS)
/** Apply normalize_planar_yuv layer on tensors with NCHW data layout.
*
* @note Data type should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=float
* @note Vector size should be given as a preprocessor argument using -DVEC_SIZE e.g. -DVEC_SIZE=8
* @note The depth of the input tensor should be given as a preprocessor argument using -DNUM_CHANNELS e.g. -DNUM_CHANNELS=8
* @note The quantization offset should be given as a preprocessor argument using -DOFFSET e.g. -DOFFSET=8
* @note The quantization scale should be given as a preprocessor argument using -DSCALE e.g. -DSCALE=8
*
* @param[in] src_ptr Pointer to the first source tensor. Supported data types: QASYMM8/QASYMM8_SIGNED
* @param[in] src_stride_x Stride of the first source tensor in X dimension (in bytes)
* @param[in] src_step_x input_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] src_stride_y Stride of the first source tensor in Y dimension (in bytes)
* @param[in] src_step_y input_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] src_stride_z Stride of the first source tensor in Z dimension (in bytes)
* @param[in] src_step_z input_stride_z * number of elements along Z processed per workitem(in bytes)
* @param[in] src_offset_first_element_in_bytes The offset of the first element in the first source tensor
* @param[out] dst_ptr Pointer to the destination tensor. Supported data types: same as @p src_ptr
* @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes)
* @param[in] dst_step_x output_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes)
* @param[in] dst_step_y output_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] dst_stride_z Stride of the destination tensor in Z dimension (in bytes)
* @param[in] dst_step_z output_stride_z * number of elements along Z processed per workitem(in bytes)
* @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
* @param[in] mean_ptr Pointer to the mean source tensor. Supported data types: same as @p src_ptr
* @param[in] mean_stride_x Stride of the mean source tensor in X dimension (in bytes)
* @param[in] mean_step_x mean_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] mean_offset_first_element_in_bytes The offset of the first element in the mean source tensor
* @param[in] std_ptr Pointer to the std tensor. Supported data types: same as @p src_ptr
* @param[in] std_stride_x Stride of the std tensor in X dimension (in bytes)
* @param[in] std_step_x std_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] std_offset_first_element_in_bytes The offset of the first element in the var source tensor
*/
__kernel void normalize_planar_yuv_layer_q8_nchw(TENSOR3D_DECLARATION(src),
TENSOR3D_DECLARATION(dst),
VECTOR_DECLARATION(mean),
VECTOR_DECLARATION(std))
{
Tensor3D src = CONVERT_TO_TENSOR3D_STRUCT(src);
Tensor3D dst = CONVERT_TO_TENSOR3D_STRUCT(dst);
Vector mean = CONVERT_TO_VECTOR_STRUCT(mean);
Vector std = CONVERT_TO_VECTOR_STRUCT(std);
const uint current_slice = get_global_id(2) % NUM_CHANNELS;
VEC_DATA_TYPE(float, VEC_SIZE)
curr_mean_flt = (VEC_DATA_TYPE(float, VEC_SIZE))(*((__global DATA_TYPE *)(mean.ptr + current_slice * sizeof(DATA_TYPE))));
curr_mean_flt = round(curr_mean_flt - OFFSET_FLT) * SCALE_FLT;
VEC_DATA_TYPE(float, VEC_SIZE)
curr_std_flt = (VEC_DATA_TYPE(float, VEC_SIZE))(*((__global DATA_TYPE *)(std.ptr + current_slice * sizeof(DATA_TYPE))));
curr_std_flt = round(curr_std_flt - OFFSET_FLT) * SCALE_FLT;
VEC_DATA_TYPE(float, VEC_SIZE)
data_flt = CONVERT(VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)src.ptr), VEC_DATA_TYPE(float, VEC_SIZE));
data_flt = round(data_flt - OFFSET_FLT) * SCALE_FLT;
// Perform normalization
VEC_DATA_TYPE(float, VEC_SIZE)
res_flt = (data_flt - curr_mean_flt) / curr_std_flt;
const TYPE res_u8 = CONVERT_SAT(round(res_flt / SCALE_FLT) + OFFSET_FLT, TYPE);
VSTORE(VEC_SIZE)
(res_u8, 0, (__global DATA_TYPE *)dst.ptr);
}
#endif // defined(NUM_CHANNELS)
#endif // defined(DATA_TYPE) && defined(VEC_SIZE) && defined(OFFSET) && defined(SCALE)
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