1 /*
2 * Copyright (c) 2016-2020 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/NEON/functions/NEHistogram.h"
25
26 #include "arm_compute/core/Error.h"
27 #include "arm_compute/core/IDistribution1D.h"
28 #include "arm_compute/core/ITensor.h"
29 #include "arm_compute/core/TensorInfo.h"
30 #include "arm_compute/core/Validate.h"
31 #include "arm_compute/runtime/NEON/NEScheduler.h"
32 #include "src/core/NEON/kernels/NEHistogramKernel.h"
33 #include "support/MemorySupport.h"
34
35 namespace arm_compute
36 {
37 NEHistogram::~NEHistogram() = default;
38
NEHistogram()39 NEHistogram::NEHistogram()
40 : _histogram_kernel(), _local_hist(), _window_lut(window_lut_default_size), _local_hist_size(0)
41 {
42 }
43
configure(const IImage * input,IDistribution1D * output)44 void NEHistogram::configure(const IImage *input, IDistribution1D *output)
45 {
46 ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(input);
47 ARM_COMPUTE_ERROR_ON(nullptr == output);
48
49 // Allocate space for threads local histograms
50 _local_hist_size = output->num_bins() * NEScheduler::get().num_threads();
51 _local_hist.resize(_local_hist_size);
52
53 // Configure kernel
54 _histogram_kernel = arm_compute::support::cpp14::make_unique<NEHistogramKernel>();
55 _histogram_kernel->configure(input, output, _local_hist.data(), _window_lut.data());
56 }
57
run()58 void NEHistogram::run()
59 {
60 // Calculate histogram of input.
61 NEScheduler::get().schedule(_histogram_kernel.get(), Window::DimY);
62 }
63 } // namespace arm_compute
64