COMPMID-344 Updated doxygen
Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
diff --git a/src/runtime/NEON/functions/NECannyEdge.cpp b/src/runtime/NEON/functions/NECannyEdge.cpp
new file mode 100644
index 0000000..26f31f5
--- /dev/null
+++ b/src/runtime/NEON/functions/NECannyEdge.cpp
@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 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/NECannyEdge.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/ITensor.h"
+#include "arm_compute/core/NEON/kernels/NECannyEdgeKernel.h"
+#include "arm_compute/core/NEON/kernels/NEFillBorderKernel.h"
+#include "arm_compute/core/TensorInfo.h"
+#include "arm_compute/core/Validate.h"
+#include "arm_compute/runtime/NEON/NEScheduler.h"
+#include "arm_compute/runtime/NEON/functions/NESobel3x3.h"
+#include "arm_compute/runtime/NEON/functions/NESobel5x5.h"
+#include "arm_compute/runtime/NEON/functions/NESobel7x7.h"
+#include "arm_compute/runtime/TensorAllocator.h"
+
+#include <cstring>
+#include <utility>
+
+using namespace arm_compute;
+
+NECannyEdge::NECannyEdge()
+ : _sobel(), _gradient(), _non_max_suppr(), _edge_trace(), _border_mag_gradient(), _border_edge_trace(), _gx(), _gy(), _magnitude(), _phase(), _nonmax(), _output(nullptr)
+{
+}
+
+void NECannyEdge::configure(ITensor *input, ITensor *output, int32_t upper_thr, int32_t lower_thr, int32_t gradient_size, int32_t norm_type, BorderMode border_mode, uint8_t constant_border_value,
+ bool use_fp16)
+{
+ ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
+ ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
+ ARM_COMPUTE_ERROR_ON(gradient_size < 3);
+ ARM_COMPUTE_ERROR_ON(gradient_size > 7);
+ ARM_COMPUTE_ERROR_ON(lower_thr > upper_thr);
+ ARM_COMPUTE_ERROR_ON((1 != norm_type) && (2 != norm_type));
+
+ _output = output;
+
+ const TensorShape &shape = input->info()->tensor_shape();
+ TensorInfo gradient_info;
+ TensorInfo magnitude_info;
+
+ // Initialize images
+ if(gradient_size < 7)
+ {
+ gradient_info.init(shape, Format::S16);
+ magnitude_info.init(shape, Format::U16);
+ }
+ else
+ {
+ gradient_info.init(shape, Format::S32);
+ magnitude_info.init(shape, Format::U32);
+ }
+
+ _gx.allocator()->init(gradient_info);
+ _gy.allocator()->init(gradient_info);
+ _magnitude.allocator()->init(magnitude_info);
+
+ TensorInfo info(shape, Format::U8);
+ _phase.allocator()->init(info);
+ _nonmax.allocator()->init(info);
+
+ // Configure/Init sobelNxN
+ if(gradient_size == 3)
+ {
+ auto k = arm_compute::cpp14::make_unique<NESobel3x3>();
+ k->configure(input, &_gx, &_gy, border_mode, constant_border_value);
+ _sobel = std::move(k);
+ }
+ else if(gradient_size == 5)
+ {
+ auto k = arm_compute::cpp14::make_unique<NESobel5x5>();
+ k->configure(input, &_gx, &_gy, border_mode, constant_border_value);
+ _sobel = std::move(k);
+ }
+ else if(gradient_size == 7)
+ {
+ auto k = arm_compute::cpp14::make_unique<NESobel7x7>();
+ k->configure(input, &_gx, &_gy, border_mode, constant_border_value);
+ _sobel = std::move(k);
+ }
+ else
+ {
+ ARM_COMPUTE_ERROR("Gradient size not supported\n");
+ }
+
+ // Configure gradient
+ if(use_fp16)
+ {
+ auto k = arm_compute::cpp14::make_unique<NEGradientFP16Kernel>();
+ k->configure(&_gx, &_gy, &_magnitude, &_phase, norm_type);
+ _gradient = std::move(k);
+ }
+ else
+ {
+ auto k = arm_compute::cpp14::make_unique<NEGradientKernel>();
+ k->configure(&_gx, &_gy, &_magnitude, &_phase, norm_type);
+ _gradient = std::move(k);
+ }
+
+ // Configure non-maxima suppression
+ _non_max_suppr.configure(&_magnitude, &_phase, &_nonmax, upper_thr, lower_thr, border_mode == BorderMode::UNDEFINED);
+
+ // Fill border around magnitude image as non-maxima suppression will access
+ // it. If border mode is undefined filling the border is a nop.
+ _border_mag_gradient.configure(&_magnitude, _non_max_suppr.border_size(), border_mode, constant_border_value);
+
+ // Configure edge tracing
+ _edge_trace.configure(&_nonmax, output);
+
+ // Fill border with "No edge" to stop recursion in edge trace
+ _border_edge_trace.configure(&_nonmax, _edge_trace.border_size(), BorderMode::CONSTANT, 0);
+
+ // Allocate intermediate tensors
+ _gx.allocator()->allocate();
+ _gy.allocator()->allocate();
+ _phase.allocator()->allocate();
+ _magnitude.allocator()->allocate();
+ _nonmax.allocator()->allocate();
+}
+
+void NECannyEdge::run()
+{
+ ARM_COMPUTE_ERROR_ON_MSG(_sobel == nullptr, "Unconfigured function");
+ ARM_COMPUTE_ERROR_ON(_output == nullptr);
+
+ // Run sobelNxN
+ _sobel->run();
+
+ // Fill border before non-maxima suppression. Nop for border mode undefined.
+ _border_mag_gradient.run(_border_mag_gradient.window());
+
+ // Run gradient
+ NEScheduler::get().schedule(_gradient.get(), Window::DimY);
+
+ // Run non-maxima suppression
+ NEScheduler::get().schedule(&_non_max_suppr, Window::DimY);
+
+ ARM_COMPUTE_ERROR_ON(_output->buffer() == nullptr);
+ memset(_output->buffer(), 0, _output->info()->total_size());
+
+ // Fill border before edge trace
+ _border_edge_trace.run(_border_edge_trace.window());
+
+ // Run edge tracing
+ _edge_trace.run(_edge_trace.window());
+}