1 /*
2 * Copyright (c) 2017-2020 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #include "arm_compute/runtime/CL/functions/CLHOGDetector.h"
25
26 #include "arm_compute/core/Helpers.h"
27 #include "arm_compute/runtime/CL/CLScheduler.h"
28 #include "src/core/CL/kernels/CLHOGDetectorKernel.h"
29 #include "support/MemorySupport.h"
30
31 #include <algorithm>
32
33 using namespace arm_compute;
34
CLHOGDetector()35 CLHOGDetector::CLHOGDetector()
36 : _hog_detector_kernel(support::cpp14::make_unique<CLHOGDetectorKernel>()), _detection_windows(nullptr), _num_detection_windows()
37 {
38 }
39
40 CLHOGDetector::~CLHOGDetector() = default;
41
configure(const ICLTensor * input,const ICLHOG * hog,ICLDetectionWindowArray * detection_windows,const Size2D & detection_window_stride,float threshold,size_t idx_class)42 void CLHOGDetector::configure(const ICLTensor *input, const ICLHOG *hog, ICLDetectionWindowArray *detection_windows, const Size2D &detection_window_stride, float threshold, size_t idx_class)
43 {
44 configure(CLKernelLibrary::get().get_compile_context(), input, hog, detection_windows, detection_window_stride, threshold, idx_class);
45 }
46
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)47 void CLHOGDetector::configure(const CLCompileContext &compile_context, const ICLTensor *input, const ICLHOG *hog, ICLDetectionWindowArray *detection_windows, const Size2D &detection_window_stride,
48 float threshold, size_t idx_class)
49 {
50 _detection_windows = detection_windows;
51
52 // Allocate buffer for storing the number of detected objects
53 _num_detection_windows = cl::Buffer(CLScheduler::get().context(), CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, sizeof(unsigned int));
54
55 // Configure HOGDetectorKernel
56 _hog_detector_kernel->configure(compile_context, input, hog, detection_windows, &_num_detection_windows, detection_window_stride, threshold, idx_class);
57 }
58
run()59 void CLHOGDetector::run()
60 {
61 cl::CommandQueue q = CLScheduler::get().queue();
62
63 // Reset number of detections
64 const unsigned int init_num_detection_windows = _detection_windows->num_values();
65 q.enqueueWriteBuffer(_num_detection_windows, CL_FALSE, 0, sizeof(unsigned int), &init_num_detection_windows);
66
67 // Run CLHOGDetectorKernel
68 CLScheduler::get().enqueue(*_hog_detector_kernel);
69
70 // Read number of detections
71 unsigned int num_detection_windows = 0;
72 q.enqueueReadBuffer(_num_detection_windows, CL_TRUE, 0, sizeof(unsigned int), &num_detection_windows);
73
74 // Update the number of values stored in _detection_windows
75 _detection_windows->resize(static_cast<size_t>(num_detection_windows));
76
77 q.flush();
78 }