From 6ff3b19ee6120edf015fad8caab2991faa3070af Mon Sep 17 00:00:00 2001
From: Anthony Barbier <anthony.barbier@arm.com>
Date: Mon, 4 Sep 2017 18:44:23 +0100
Subject: COMPMID-344 Updated doxygen

Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
---
 src/runtime/NEON/functions/NEFastCorners.cpp | 101 +++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 src/runtime/NEON/functions/NEFastCorners.cpp

(limited to 'src/runtime/NEON/functions/NEFastCorners.cpp')

diff --git a/src/runtime/NEON/functions/NEFastCorners.cpp b/src/runtime/NEON/functions/NEFastCorners.cpp
new file mode 100644
index 0000000000..33a58f1904
--- /dev/null
+++ b/src/runtime/NEON/functions/NEFastCorners.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2016, 2017 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/NEON/functions/NEFastCorners.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/ITensor.h"
+#include "arm_compute/core/NEON/kernels/NEFillBorderKernel.h"
+#include "arm_compute/core/PixelValue.h"
+#include "arm_compute/core/TensorInfo.h"
+#include "arm_compute/core/Validate.h"
+#include "arm_compute/runtime/Array.h"
+#include "arm_compute/runtime/NEON/NEScheduler.h"
+#include "arm_compute/runtime/TensorAllocator.h"
+
+using namespace arm_compute;
+
+NEFastCorners::NEFastCorners()
+    : _fast_corners_kernel(),
+      _border_handler(),
+      _nonmax_kernel(),
+      _fill_kernel(),
+      _output(),
+      _suppressed(),
+      _non_max(false)
+{
+}
+
+void NEFastCorners::configure(IImage *input, float threshold, bool nonmax_suppression, KeyPointArray *corners,
+                              BorderMode border_mode, uint8_t constant_border_value)
+{
+    ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(input);
+    ARM_COMPUTE_ERROR_ON(BorderMode::UNDEFINED != border_mode);
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
+    ARM_COMPUTE_ERROR_ON(nullptr == corners);
+    ARM_COMPUTE_ERROR_ON(threshold < 1 && threshold > 255);
+
+    _non_max = nonmax_suppression;
+
+    TensorInfo tensor_info(input->info()->tensor_shape(), Format::U8);
+    _output.allocator()->init(tensor_info);
+
+    // If border is UNDEFINED _fast_corners_kernel will operate in xwindow (3,
+    // width - 3) and ywindow (3, height -3) so the output image will leave the
+    // pixels on the borders unchanged. This is reflected in the valid region
+    // of the output. The non maxima suppression is only run on the valid
+    // pixels.
+    _fast_corners_kernel.configure(input, &_output, threshold, nonmax_suppression, BorderMode::UNDEFINED == border_mode);
+    _border_handler.configure(input, _fast_corners_kernel.border_size(), border_mode, constant_border_value);
+
+    if(!_non_max)
+    {
+        _fill_kernel.configure(&_output, 1 /* we keep all texels >0 */, corners);
+    }
+    else
+    {
+        _suppressed.allocator()->init(tensor_info);
+        _nonmax_kernel.configure(&_output, &_suppressed, BorderMode::UNDEFINED == border_mode);
+        _fill_kernel.configure(&_suppressed, 1 /* we keep all texels >0 */, corners);
+
+        // Allocate intermediate tensors
+        _suppressed.allocator()->allocate();
+    }
+
+    // Allocate intermediate tensors
+    _output.allocator()->allocate();
+}
+
+void NEFastCorners::run()
+{
+    _border_handler.run(_border_handler.window());
+
+    NEScheduler::get().schedule(&_fast_corners_kernel, Window::DimY);
+
+    if(_non_max)
+    {
+        NEScheduler::get().schedule(&_nonmax_kernel, Window::DimY);
+    }
+
+    NEScheduler::get().schedule(&_fill_kernel, Window::DimY);
+}
-- 
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