COMPMID-2318: Implement NEROIAlignLayer

Change-Id: I2665c98b5d6523a9ddaef0b7c220aecd22559ce6
Signed-off-by: Pablo Tello <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1826
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>

2 files changed, 100 insertions, 0 deletions

diff --git a/arm_compute/core/NEON/NEKernels.h b/arm_compute/core/NEON/NEKernels.h
index bf77e576ad..5e3389744f 100644
--- a/arm_compute/core/NEON/NEKernels.h
+++ b/arm_compute/core/NEON/NEKernels.h
@@ -118,6 +118,7 @@
 #include "arm_compute/core/NEON/kernels/NEPoolingLayerKernel.h"
 #include "arm_compute/core/NEON/kernels/NEPriorBoxLayerKernel.h"
 #include "arm_compute/core/NEON/kernels/NEQuantizationLayerKernel.h"
+#include "arm_compute/core/NEON/kernels/NEROIAlignLayerKernel.h"
 #include "arm_compute/core/NEON/kernels/NEROIPoolingLayerKernel.h"
 #include "arm_compute/core/NEON/kernels/NERangeKernel.h"
 #include "arm_compute/core/NEON/kernels/NEReductionOperationKernel.h"
diff --git a/arm_compute/core/NEON/kernels/NEROIAlignLayerKernel.h b/arm_compute/core/NEON/kernels/NEROIAlignLayerKernel.h
new file mode 100644
index 0000000000..00c6f07cb5
--- /dev/null
+++ b/arm_compute/core/NEON/kernels/NEROIAlignLayerKernel.h
@@ -0,0 +1,99 @@
+/*
+ * 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_NEROIALIGNLAYERKERNEL_H__
+#define __ARM_COMPUTE_NEROIALIGNLAYERKERNEL_H__
+
+#include "arm_compute/core/NEON/INEKernel.h"
+
+namespace arm_compute
+{
+class ITensor;
+
+/** Interface for the RoIAlign kernel.
+ */
+class NEROIAlignLayerKernel : public INEKernel
+{
+public:
+    const char *name() const override
+    {
+        return "NEROIAlignLayerKernel";
+    }
+
+    /** Constructor */
+    NEROIAlignLayerKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NEROIAlignLayerKernel(const NEROIAlignLayerKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NEROIAlignLayerKernel &operator=(const NEROIAlignLayerKernel &) = delete;
+    /** Default Move Constructor. */
+    NEROIAlignLayerKernel(NEROIAlignLayerKernel &&) = default;
+    /** Default move assignment operator. */
+    NEROIAlignLayerKernel &operator=(NEROIAlignLayerKernel &&) = default;
+    /** Default destructor */
+    ~NEROIAlignLayerKernel() = default;
+
+    /** Set the input and output tensors.
+     *
+     * @param[in]  input     Source tensor. Data types supported: F16/F32.
+     * @param[in]  rois      ROIs tensor, it is a 2D tensor of size [5, N] (where N is the number of ROIs) containing top left and bottom right corner
+     *                       as coordinate of an image and batch_id of ROI [ batch_id, x1, y1, x2, y2 ]. Data types supported: same as @p input
+     * @param[out] output    Destination tensor. Data types supported: Same as @p input.
+     * @param[in]  pool_info Contains pooling operation information described in @ref ROIPoolingLayerInfo.
+     *
+     * @note The x and y dimensions of @p output tensor must be the same as @p pool_info 's pooled
+     * width and pooled height.
+     * @note The z dimensions of @p output tensor and @p input tensor must be the same.
+     * @note The fourth dimension of @p output tensor must be the same as the number of elements in @p rois array.
+     */
+    void configure(const ITensor *input, const ITensor *rois, ITensor *output, const ROIPoolingLayerInfo &pool_info);
+    /** Static function to check if given info will lead to a valid configuration of @ref NEROIAlignLayerKernel
+     *
+     * @param[in] input     Source tensor info. Data types supported: F16/F32.
+     * @param[in] rois      ROIs tensor info. Data types supported: same as @p input
+     * @param[in] output    Destination tensor info. Data types supported: Same as @p input.
+     * @param[in] pool_info Contains pooling operation information described in @ref ROIPoolingLayerInfo.
+     *
+     * @note The x and y dimensions of @p output tensor must be the same as @p pool_info 's pooled
+     * width and pooled height.
+     * @note The z dimensions of @p output tensor and @p input tensor must be the same.
+     * @note The fourth dimension of @p output tensor must be the same as the number of elements in @p rois array.
+     *
+     * @return a Status
+     */
+    static Status validate(const ITensorInfo *input, const ITensorInfo *rois, ITensorInfo *output, const ROIPoolingLayerInfo &pool_info);
+
+    // Inherited methods overridden:
+    void run(const Window &window, const ThreadInfo &info) override;
+
+private:
+    template <DataLayout data_layout, typename data_type>
+    void internal_run(const Window &window, const ThreadInfo &info);
+
+    const ITensor      *_input;
+    ITensor            *_output;
+    const ITensor      *_rois;
+    ROIPoolingLayerInfo _pool_info;
+};
+} // namespace arm_compute
+#endif /*__ARM_COMPUTE_NEROIALIGNLAYERKERNEL_H__*/