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/*
* Copyright (c) 2017-2020 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 "arm_compute/runtime/CL/functions/CLHOGDetector.h"
#include "arm_compute/core/CL/kernels/CLHOGDetectorKernel.h"
#include "arm_compute/core/Helpers.h"
#include "arm_compute/runtime/CL/CLScheduler.h"
#include <algorithm>
using namespace arm_compute;
CLHOGDetector::CLHOGDetector()
: _hog_detector_kernel(), _detection_windows(nullptr), _num_detection_windows()
{
}
void CLHOGDetector::configure(const ICLTensor *input, const ICLHOG *hog, ICLDetectionWindowArray *detection_windows, const Size2D &detection_window_stride, float threshold, size_t idx_class)
{
configure(CLKernelLibrary::get().get_compile_context(), input, hog, detection_windows, detection_window_stride, threshold, idx_class);
}
void CLHOGDetector::configure(const CLCompileContext &compile_context, const ICLTensor *input, const ICLHOG *hog, ICLDetectionWindowArray *detection_windows, const Size2D &detection_window_stride,
float threshold, size_t idx_class)
{
_detection_windows = detection_windows;
// Allocate buffer for storing the number of detected objects
_num_detection_windows = cl::Buffer(CLScheduler::get().context(), CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, sizeof(unsigned int));
// Configure HOGDetectorKernel
_hog_detector_kernel.configure(compile_context, input, hog, detection_windows, &_num_detection_windows, detection_window_stride, threshold, idx_class);
}
void CLHOGDetector::run()
{
cl::CommandQueue q = CLScheduler::get().queue();
// Reset number of detections
const unsigned int init_num_detection_windows = _detection_windows->num_values();
q.enqueueWriteBuffer(_num_detection_windows, CL_FALSE, 0, sizeof(unsigned int), &init_num_detection_windows);
// Run CLHOGDetectorKernel
CLScheduler::get().enqueue(_hog_detector_kernel);
// Read number of detections
unsigned int num_detection_windows = 0;
q.enqueueReadBuffer(_num_detection_windows, CL_TRUE, 0, sizeof(unsigned int), &num_detection_windows);
// Update the number of values stored in _detection_windows
_detection_windows->resize(static_cast<size_t>(num_detection_windows));
q.flush();
}
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