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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (c) 2016-2017 Fabian David Tschopp, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#if defined(cl_khr_fp16)
#pragma OPENCL EXTENSION cl_khr_fp16 : enable
#endif
__kernel void prior_box(const int nthreads,
const float stepX,
const float stepY,
__global const float* _offsetsX,
__global const float* _offsetsY,
const int offsetsX_size,
__global const float* _widths,
__global const float* _heights,
const int widths_size,
__global Dtype* dst,
const int _layerHeight,
const int _layerWidth,
const int imgHeight,
const int imgWidth)
{
for (int index = get_global_id(0); index < nthreads; index += get_global_size(0))
{
int w = index % _layerWidth;
int h = index / _layerWidth;
__global Dtype* outputPtr;
outputPtr = dst + index * 4 * offsetsX_size * widths_size;
float _boxWidth, _boxHeight;
Dtype4 vec;
for (int i = 0; i < widths_size; ++i)
{
_boxWidth = _widths[i];
_boxHeight = _heights[i];
for (int j = 0; j < offsetsX_size; ++j)
{
Dtype center_x = (w + _offsetsX[j]) * (Dtype)stepX;
Dtype center_y = (h + _offsetsY[j]) * (Dtype)stepY;
vec.x = (center_x - _boxWidth * 0.5f) / imgWidth; // xmin
vec.y = (center_y - _boxHeight * 0.5f) / imgHeight; // ymin
vec.z = (center_x + _boxWidth * 0.5f) / imgWidth; // xmax
vec.w = (center_y + _boxHeight * 0.5f) / imgHeight; // ymax
vstore4(vec, 0, outputPtr);
outputPtr += 4;
}
}
}
}
__kernel void set_variance(const int nthreads,
const int offset,
const int variance_size,
__global const float* variance,
__global Dtype* dst)
{
for (int index = get_global_id(0); index < nthreads; index += get_global_size(0))
{
Dtype4 var_vec;
if (variance_size == 1)
var_vec = (Dtype4)(variance[0]);
else
var_vec = convert_T(vload4(0, variance));
vstore4(var_vec, 0, dst + offset + index * 4);
}
}
__kernel void clip(const int nthreads,
__global Dtype* dst)
{
for (int index = get_global_id(0); index < nthreads; index += get_global_size(0))
{
Dtype4 vec = vload4(index, dst);
vstore4(clamp(vec, 0.0f, 1.0f), index, dst);
}
}