COMPMID-2080 Create a new kernel for CLPad with CONSTANT mode

Change-Id: Ib67bacd40c13c7784ca9f5699a235f9d106baddb
Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1739
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Giuseppe Rossini <giuseppe.rossini@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

2 files changed, 86 insertions, 0 deletions

diff --git a/arm_compute/core/CL/CLKernels.h b/arm_compute/core/CL/CLKernels.h
index cd9eadc1cd..e002de7b89 100644
--- a/arm_compute/core/CL/CLKernels.h
+++ b/arm_compute/core/CL/CLKernels.h
@@ -121,6 +121,7 @@
 #include "arm_compute/core/CL/kernels/CLNonMaximaSuppression3x3Kernel.h"
 #include "arm_compute/core/CL/kernels/CLNormalizationLayerKernel.h"
 #include "arm_compute/core/CL/kernels/CLNormalizePlanarYUVLayerKernel.h"
+#include "arm_compute/core/CL/kernels/CLPadLayerKernel.h"
 #include "arm_compute/core/CL/kernels/CLPermuteKernel.h"
 #include "arm_compute/core/CL/kernels/CLPixelWiseMultiplicationKernel.h"
 #include "arm_compute/core/CL/kernels/CLPoolingLayerKernel.h"
diff --git a/arm_compute/core/CL/kernels/CLPadLayerKernel.h b/arm_compute/core/CL/kernels/CLPadLayerKernel.h
new file mode 100644
index 0000000000..7e4b31cfda
--- /dev/null
+++ b/arm_compute/core/CL/kernels/CLPadLayerKernel.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_CLPADLAYERKERNEL_H__
+#define __ARM_COMPUTE_CLPADLAYERKERNEL_H__
+
+#include "arm_compute/core/CL/ICLKernel.h"
+#include "arm_compute/core/CL/ICLTensor.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Interface for the PadLayer function. Only CONSTANT PaddingMode is currently supported*/
+class CLPadLayerKernel : public ICLKernel
+{
+public:
+    /** Default constructor */
+    CLPadLayerKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLPadLayerKernel(const CLPadLayerKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLPadLayerKernel &operator=(const CLPadLayerKernel &) = delete;
+    /** Allow instances of this class to be moved */
+    CLPadLayerKernel(CLPadLayerKernel &&) = default;
+    /** Allow instances of this class to be moved */
+    CLPadLayerKernel &operator=(CLPadLayerKernel &&) = default;
+    /** Default destructor */
+    ~CLPadLayerKernel() = default;
+    /** Set the input and output tensor.
+     *
+     * @param[in]  input          Source tensor. Data types supported: U8/S8/QASYMM8/U16/S16/F16/U32/S32/F32.
+     * @param[out] output         Output tensor. Data type supported: same as @p input
+     * @param[in]  padding        The padding for each spatial dimension of the input tensor. The pair padding[i]
+     *                            specifies the front and the end padding in the i-th dimension.
+     * @param[in]  constant_value (Optional) Constant value to be used for the padding.
+     * @param[in]  mode           (Optional) Controls whether the padding should be filled with @p constant_value using CONSTANT,
+     *                            or reflect the input, either including the border values (SYMMETRIC) or not (REFLECT).
+     *                            Only CONSTANT mode is currently supported.
+     */
+    void configure(const ICLTensor *input, ICLTensor *output, const PaddingList &padding, PixelValue constant_value = PixelValue(), PaddingMode mode = PaddingMode::CONSTANT);
+    /** Static function to check if given info will lead to a valid configuration of @ref CLPadLayerKernel
+     *
+     * @param[in] input          Source tensor info. Data types supported: U8/S8/QASYMM8/U16/S16/F16/U32/S32/F32.
+     * @param[in] output         Output tensor info. Data type supported: same as @p input
+     * @param[in] padding        The padding for each spatial dimension of the input tensor. The pair padding[i]
+     *                           specifies the front and the end padding in the i-th dimension.
+     * @param[in] constant_value (Optional) Constant value to be used for the padding.
+     * @param[in] mode           (Optional) Controls whether the padding should be filled with @p constant_value using CONSTANT,
+     *                            or reflect the input, either including the border values (SYMMETRIC) or not (REFLECT).
+     *                            Only CONSTANT mode is currently supported.
+     */
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output, const PaddingList &padding, PixelValue constant_value = PixelValue(), PaddingMode mode = PaddingMode::CONSTANT);
+
+    // Inherited methods overridden:
+    void run(const Window &window, cl::CommandQueue &queue) override;
+
+private:
+    const ICLTensor *_input;
+    ICLTensor       *_output;
+    int              _input_start_x;
+    int              _input_start_y;
+};
+} // namespace arm_compute
+#endif /*__ARM_COMPUTE_CLPADLAYERKERNEL_H__ */