From 769c638959b8f8a11fe9d7880f3dcdebc181bb91 Mon Sep 17 00:00:00 2001
From: Manuel Bottini <manuel.bottini@arm.com>
Date: Thu, 22 Aug 2019 13:13:48 +0100
Subject: COMPMID-2314: Implement NEON INSTANCE_NORMALIZATION function

Change-Id: Ibaa574207aedf691953f8af8fa32b6408a1664ec
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1905
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
---
 .../functions/NEInstanceNormalizationLayer.cpp     | 88 ++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 src/runtime/NEON/functions/NEInstanceNormalizationLayer.cpp

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

diff --git a/src/runtime/NEON/functions/NEInstanceNormalizationLayer.cpp b/src/runtime/NEON/functions/NEInstanceNormalizationLayer.cpp
new file mode 100644
index 0000000000..295f80af95
--- /dev/null
+++ b/src/runtime/NEON/functions/NEInstanceNormalizationLayer.cpp
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2019 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/NEInstanceNormalizationLayer.h"
+
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/runtime/NEON/NEScheduler.h"
+
+namespace arm_compute
+{
+NEInstanceNormalizationLayer::NEInstanceNormalizationLayer(std::shared_ptr<IMemoryManager> memory_manager)
+    : _memory_group(std::move(memory_manager)), _normalization_kernel(), _is_nchw(false), _permute_input(), _permute_output(), _permuted_input(), _permuted_output()
+{
+}
+
+void NEInstanceNormalizationLayer::configure(ITensor *input, ITensor *output, float gamma, float beta, float epsilon)
+{
+    const DataLayout data_layout = input->info()->data_layout();
+
+    // Configure Kernels
+    _is_nchw = data_layout == DataLayout::NCHW;
+
+    if(!_is_nchw)
+    {
+        _memory_group.manage(&_permuted_input);
+        _memory_group.manage(&_permuted_output);
+
+        // Configure the function to transform the input tensor from NHWC -> NCHW
+        _permute_input.configure(input, &_permuted_input, PermutationVector(1U, 2U, 0U));
+        _permuted_input.info()->set_data_layout(DataLayout::NCHW);
+
+        _normalization_kernel.configure(&_permuted_input, &_permuted_output, gamma, beta, epsilon);
+        _permuted_output.info()->set_data_layout(DataLayout::NCHW);
+
+        _permute_output.configure(&_permuted_output, output != nullptr ? output : input, PermutationVector(2U, 0U, 1U));
+        _permuted_input.allocator()->allocate();
+        _permuted_output.allocator()->allocate();
+    }
+    else
+    {
+        _normalization_kernel.configure(input, output, gamma, beta, epsilon);
+    }
+}
+
+Status NEInstanceNormalizationLayer::validate(const ITensorInfo *input, const ITensorInfo *output, float gamma, float beta, float epsilon)
+{
+    return NEInstanceNormalizationLayerKernel::validate(input, &output->clone()->set_data_layout(DataLayout::NCHW), gamma, beta, epsilon);
+}
+
+void NEInstanceNormalizationLayer::run()
+{
+    MemoryGroupResourceScope scope_mg(_memory_group);
+
+    // Permute input
+    if(!_is_nchw)
+    {
+        _permute_input.run();
+    }
+
+    NEScheduler::get().schedule(&_normalization_kernel, Window::DimZ);
+
+    // Permute output
+    if(!_is_nchw)
+    {
+        _permute_output.run();
+    }
+}
+} // namespace arm_compute
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