[COMPMID-1331] Add support for RoIAlign operator in CL

Change-Id: Ie215daacd10477309dbf8af1bb2b05b7a0a8f203
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/150773
Tested-by: bsgcomp <bsgcomp@arm.com>
Reviewed-by: Isabella Gottardi <isabella.gottardi@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/arm_compute/core/CL/kernels/CLROIAlignLayerKernel.h b/arm_compute/core/CL/kernels/CLROIAlignLayerKernel.h
new file mode 100644
index 0000000000..6908675ec1
--- /dev/null
+++ b/arm_compute/core/CL/kernels/CLROIAlignLayerKernel.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018 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_CLROIALIGNLAYERKERNEL_H__
+#define __ARM_COMPUTE_CLROIALIGNLAYERKERNEL_H__
+
+#include "arm_compute/core/CL/ICLArray.h"
+#include "arm_compute/core/CL/ICLKernel.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Interface for the RoIAlign kernel.
+ */
+class CLROIAlignLayerKernel : public ICLKernel
+{
+public:
+    /** Constructor */
+    CLROIAlignLayerKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLROIAlignLayerKernel(const CLROIAlignLayerKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLROIAlignLayerKernel &operator=(const CLROIAlignLayerKernel &) = delete;
+    /** Default Move Constructor. */
+    CLROIAlignLayerKernel(CLROIAlignLayerKernel &&) = default;
+    /** Default move assignment operator. */
+    CLROIAlignLayerKernel &operator=(CLROIAlignLayerKernel &&) = default;
+    /** Default destructor */
+    ~CLROIAlignLayerKernel() = default;
+
+    /** Set the input and output tensors.
+     *
+     * @param[in]  input     Source tensor. Data types supported: F16/F32.
+     * @param[in]  rois      Array containing @ref ROI.
+     * @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 ICLTensor *input, const ICLROIArray *rois, ICLTensor *output, const ROIPoolingLayerInfo &pool_info);
+    /** Static function to check if given info will lead to a valid configuration of @ref CLROIAlignLayerKernel
+     *
+     * @param[in]  input     Source tensor info. Data types supported: F16/F32.
+     * @param[in]  num_rois  Length of the array containing @ref ROI.
+     * @param[out] 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, size_t num_rois, ITensorInfo *output, const ROIPoolingLayerInfo &pool_info);
+
+    // Inherited methods overridden:
+    void run(const Window &window, cl::CommandQueue &queue);
+
+private:
+    const ICLTensor    *_input;
+    ICLTensor          *_output;
+    const ICLROIArray *_rois;
+    ROIPoolingLayerInfo _pool_info;
+};
+} // namespace arm_compute
+#endif /*__ARM_COMPUTE_CLROIALIGNLAYERKERNEL_H__*/