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/*
* Copyright (c) 2017-2019 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(NUM_GROUPS)
/** This kernel reshapes the tensor's low three dimensions to single column
*
* @note Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=short
* @note The number of groups should be given as a preprocessor argument using -DNUM_GROUPS=number. e.g. -DNUM_GROUPS=2
*
* @param[in] src_ptr Pointer to the source tensor. Supported data types: All
* @param[in] src_stride_x Stride of the source tensor in X dimension (in bytes)
* @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] src_stride_y Stride of the source tensor in Y dimension (in bytes)
* @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] src_stride_z Stride of the source tensor in Z dimension (in bytes)
* @param[in] src_step_z src_stride_z * number of elements along Y processed per workitem(in bytes)
* @param[in] src_offset_first_element_in_bytes The offset of the first element in the source tensor
* @param[out] dst_ptr Pointer to the destination tensor. 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 dst_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 dst_stride_y * number of elements along Y 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] bias_ptr Pointer to the bias tensor. Supported data types: F16/F32, for quantized types this must be nullptr
* @param[in] bias_stride_x Stride of the bias tensor in X dimension (in bytes)
* @param[in] bias_step_x bias_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] bias_offset_first_element_in_bytes The offset of the first element in the source tensor
* @param[in] width The width of the input tensor
* @param[in] height The height of the input tensor
* @param[in] depth The depth of the input tensor
* @param[in] total_filters Total number of filters. 4th dimension of the weights matrix
* @param[in] dst_stride_z Stride of the destination tensor in Z dimension (in bytes)
*/
__kernel void reshape_to_columns(
TENSOR3D_DECLARATION(src),
IMAGE_DECLARATION(dst),
#ifdef HAS_BIAS
VECTOR_DECLARATION(bias),
#endif /* HAS_BIAS */
uint width, uint height, uint depth, uint total_filters, uint dst_stride_z)
{
Tensor3D src = CONVERT_TO_TENSOR3D_STRUCT(src);
bool is_last_thread = (get_global_id(0) == (get_global_size(0) - 1) && get_global_id(1) == (get_global_size(1) - 1) && get_global_id(2) == (get_global_size(2) - 1));
__global uchar *tmp_src_ptr = src.ptr;
__global uchar *tmp_dst_ptr = dst_ptr + dst_offset_first_element_in_bytes + get_global_id(0) * dst_stride_y + get_global_id(1) * width * dst_stride_y + get_global_id(
2) * width * height * dst_stride_y;
#ifdef HAS_BIAS
__global uchar *tmp_bias_ptr = bias_ptr + bias_offset_first_element_in_bytes;
#endif /* HAS_BIAS */
if(is_last_thread)
{
for(uint g = 0; g < NUM_GROUPS; ++g)
{
__global uchar *curr_group_dst = tmp_dst_ptr;
for(uint i = 0; i < total_filters / NUM_GROUPS; ++i)
{
*((__global DATA_TYPE *)curr_group_dst) = *((__global DATA_TYPE *)tmp_src_ptr);
#ifdef HAS_BIAS
*((__global DATA_TYPE *)(curr_group_dst + dst_stride_y)) = *((__global DATA_TYPE *)(tmp_bias_ptr));
tmp_bias_ptr += bias_stride_x;
#endif /* HAS_BIAS */
tmp_src_ptr += depth * src_stride_z;
curr_group_dst += dst_stride_x;
}
tmp_dst_ptr += dst_stride_z;
}
}
else
{
for(uint g = 0; g < NUM_GROUPS; ++g)
{
__global uchar *curr_group_dst = tmp_dst_ptr;
for(uint i = 0; i < total_filters / NUM_GROUPS; ++i)
{
*((__global DATA_TYPE *)curr_group_dst) = *((__global DATA_TYPE *)tmp_src_ptr);
tmp_src_ptr += depth * src_stride_z;
curr_group_dst += dst_stride_x;
}
tmp_dst_ptr += dst_stride_z;
}
}
}
#endif // defined(DATA_TYPE)
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