COMPMID-2313: Implement CL INSTANCE_NORMALIZATION function

Change-Id: If11799bef1bbb973d4287ffc1c6eb4c2a28bbf5f
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1989
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>

4 files changed, 154 insertions, 0 deletions

diff --git a/arm_compute/core/CL/CLKernels.h b/arm_compute/core/CL/CLKernels.h
index e298247e2e..3d9b2c81cd 100644
--- a/arm_compute/core/CL/CLKernels.h
+++ b/arm_compute/core/CL/CLKernels.h
@@ -106,6 +106,7 @@
 #include "arm_compute/core/CL/kernels/CLHeightConcatenateLayerKernel.h"
 #include "arm_compute/core/CL/kernels/CLHistogramKernel.h"
 #include "arm_compute/core/CL/kernels/CLIm2ColKernel.h"
+#include "arm_compute/core/CL/kernels/CLInstanceNormalizationLayerKernel.h"
 #include "arm_compute/core/CL/kernels/CLIntegralImageKernel.h"
 #include "arm_compute/core/CL/kernels/CLL2NormalizeLayerKernel.h"
 #include "arm_compute/core/CL/kernels/CLLKTrackerKernel.h"
diff --git a/arm_compute/core/CL/kernels/CLInstanceNormalizationLayerKernel.h b/arm_compute/core/CL/kernels/CLInstanceNormalizationLayerKernel.h
new file mode 100644
index 0000000000..bc016d1ceb
--- /dev/null
+++ b/arm_compute/core/CL/kernels/CLInstanceNormalizationLayerKernel.h
@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+#ifndef __ARM_COMPUTE_CLINSTANCENORMALIZATIONLAYERKERNEL_H__
+#define __ARM_COMPUTE_CLINSTANCENORMALIZATIONLAYERKERNEL_H__
+
+#include "arm_compute/core/CL/ICLKernel.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Interface for performing an instance normalization */
+class CLInstanceNormalizationLayerKernel : public ICLKernel
+{
+public:
+    /** Constructor */
+    CLInstanceNormalizationLayerKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLInstanceNormalizationLayerKernel(const CLInstanceNormalizationLayerKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLInstanceNormalizationLayerKernel &operator=(const CLInstanceNormalizationLayerKernel &) = delete;
+    /** Default Move Constructor. */
+    CLInstanceNormalizationLayerKernel(CLInstanceNormalizationLayerKernel &&) = default;
+    /** Default move assignment operator */
+    CLInstanceNormalizationLayerKernel &operator=(CLInstanceNormalizationLayerKernel &&) = default;
+    /** Default destructor */
+    ~CLInstanceNormalizationLayerKernel() = default;
+
+    /** Set the input and output tensors.
+     *
+     * @param[in, out] input   Source tensor. Data types supported: F16/F32. Data layout supported: NCHW
+     * @param[out]     output  Destination tensor. Data types and data layouts supported: same as @p input.
+     * @param[in]      gamma   (Optional) The scale scalar value applied to the normalized tensor. Defaults to 1.0
+     * @param[in]      beta    (Optional) The offset scalar value applied to the normalized tensor. Defaults to 0.0
+     * @param[in]      epsilon (Optional) Lower bound value for the normalization. Defaults to 1e-12
+     */
+    void configure(ICLTensor *input, ICLTensor *output, float gamma = 1.0f, float beta = 0.0f, float epsilon = 1e-12f);
+
+    /** Static function to check if given info will lead to a valid configuration of @ref CLInstanceNormalizationLayer.
+     *
+     * @param[in] input   Source tensor info. In case of @p output tensor = nullptr this tensor will store the result of the normalization.
+     *                    Data types supported: F16/F32. Data layout supported: NHWC, NCHW
+     * @param[in] output  Destination tensor info. Data types and data layouts supported: same as @p input.
+     * @param[in] gamma   (Optional) The scale scalar value applied to the normalized tensor. Defaults to 1.0
+     * @param[in] beta    (Optional) The offset scalar value applied to the normalized tensor. Defaults to 0.0
+     * @param[in] epsilon (Optional) Lower bound value for the normalization. Defaults to 1e-12
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output, float gamma = 1.0f, float beta = 0.0f, float epsilon = 1e-12f);
+
+    // Inherited methods overridden:
+    void run(const Window &window, cl::CommandQueue &queue) override;
+
+private:
+    ICLTensor *_input;
+    ICLTensor *_output;
+    float      _gamma;
+    float      _beta;
+    float      _epsilon;
+    bool       _run_in_place;
+};
+} // namespace arm_compute
+#endif /*__ARM_COMPUTE_CLINSTANCENORMALIZATIONLAYERKERNEL_H__ */
diff --git a/arm_compute/runtime/CL/CLFunctions.h b/arm_compute/runtime/CL/CLFunctions.h
index 007ee707c5..e647819bff 100644
--- a/arm_compute/runtime/CL/CLFunctions.h
+++ b/arm_compute/runtime/CL/CLFunctions.h
@@ -90,6 +90,7 @@
 #include "arm_compute/runtime/CL/functions/CLHOGMultiDetection.h"
 #include "arm_compute/runtime/CL/functions/CLHarrisCorners.h"
 #include "arm_compute/runtime/CL/functions/CLHistogram.h"
+#include "arm_compute/runtime/CL/functions/CLInstanceNormalizationLayer.h"
 #include "arm_compute/runtime/CL/functions/CLIntegralImage.h"
 #include "arm_compute/runtime/CL/functions/CLL2NormalizeLayer.h"
 #include "arm_compute/runtime/CL/functions/CLLSTMLayer.h"
diff --git a/arm_compute/runtime/CL/functions/CLInstanceNormalizationLayer.h b/arm_compute/runtime/CL/functions/CLInstanceNormalizationLayer.h
new file mode 100644
index 0000000000..e13826aeff
--- /dev/null
+++ b/arm_compute/runtime/CL/functions/CLInstanceNormalizationLayer.h
@@ -0,0 +1,67 @@
+/*
+ * 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.
+ */
+#ifndef __ARM_COMPUTE_CLINSTANCENORMALIZATIONLAYER_H__
+#define __ARM_COMPUTE_CLINSTANCENORMALIZATIONLAYER_H__
+
+#include "arm_compute/runtime/CL/ICLSimpleFunction.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Basic function to perform a Instance normalization.
+ *
+ * This function runs the following kernels:
+ * -# @ref CLInstanceNormalizationLayerKernel
+ */
+class CLInstanceNormalizationLayer : public ICLSimpleFunction
+{
+public:
+    /** Default constructor */
+    CLInstanceNormalizationLayer();
+    /** Set the input and output tensors.
+     *
+     * @param[in, out] input   Source tensor. In case of @p output tensor = nullptr this tensor will store the result of the normalization.
+     *                         Data types supported: F16/F32. Data layout supported: NHWC, NCHW
+     * @param[out]     output  Destination tensor. Data types and data layouts supported: same as @p input.
+     * @param[in]      gamma   (Optional) The scale scalar value applied to the normalized tensor. Defaults to 1.0
+     * @param[in]      beta    (Optional) The offset scalar value applied to the normalized tensor. Defaults to 0.0
+     * @param[in]      epsilon (Optional) Lower bound value for the normalization. Defaults to 1e-12
+     */
+    void configure(ICLTensor *input, ICLTensor *output, float gamma = 1.0f, float beta = 0.0f, float epsilon = 1e-12f);
+
+    /** Static function to check if given info will lead to a valid configuration of @ref CLInstanceNormalizationLayer.
+     *
+     * @param[in] input   Source tensor info. Data types supported: F16/F32. Data layout supported: NHWC, NCHW
+     * @param[in] output  Destination tensor info. Data types and data layouts supported: same as @p input.
+     * @param[in] gamma   (Optional) The scale scalar value applied to the normalized tensor. Defaults to 1.0
+     * @param[in] beta    (Optional) The offset scalar value applied to the normalized tensor. Defaults to 0.0
+     * @param[in] epsilon (Optional) Lower bound value for the normalization. Defaults to 1e-12
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output, float gamma = 1.0f, float beta = 0.0f, float epsilon = 1e-12f);
+};
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_CLINSTANCENORMALIZATIONLAYER_H__ */