COMPMID-1734: Implement CLSelect

Change-Id: I49b2e8b4200c9ed654736d9451e4ab9c073b4b10

2 files changed, 86 insertions, 0 deletions

diff --git a/arm_compute/core/CL/CLKernels.h b/arm_compute/core/CL/CLKernels.h
index cc76231345..1457d7b3ac 100644
--- a/arm_compute/core/CL/CLKernels.h
+++ b/arm_compute/core/CL/CLKernels.h
@@ -116,6 +116,7 @@
 #include "arm_compute/core/CL/kernels/CLReshapeLayerKernel.h"
 #include "arm_compute/core/CL/kernels/CLScaleKernel.h"
 #include "arm_compute/core/CL/kernels/CLScharr3x3Kernel.h"
+#include "arm_compute/core/CL/kernels/CLSelectKernel.h"
 #include "arm_compute/core/CL/kernels/CLSobel3x3Kernel.h"
 #include "arm_compute/core/CL/kernels/CLSobel5x5Kernel.h"
 #include "arm_compute/core/CL/kernels/CLSobel7x7Kernel.h"
diff --git a/arm_compute/core/CL/kernels/CLSelectKernel.h b/arm_compute/core/CL/kernels/CLSelectKernel.h
new file mode 100644
index 0000000000..031166c37c
--- /dev/null
+++ b/arm_compute/core/CL/kernels/CLSelectKernel.h
@@ -0,0 +1,85 @@
+/*
+ * 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_CLSELECTKERNEL_H__
+#define __ARM_COMPUTE_CLSELECTKERNEL_H__
+
+#include "arm_compute/core/CL/ICLKernel.h"
+#include "arm_compute/core/Types.h"
+
+namespace arm_compute
+{
+// Forward declarations
+class ICLTensor;
+
+/** OpenCL interface for executing the select kernel
+ *
+ * Select is computed by:
+ * @f[ output(i) = condition(i) ? x(i) : y(i) @f]
+ **/
+class CLSelectKernel : public ICLKernel
+{
+public:
+    /** Default constructor */
+    CLSelectKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLSelectKernel(const CLSelectKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLSelectKernel &operator=(const CLSelectKernel &) = delete;
+    /** Allow instances of this class to be moved */
+    CLSelectKernel(CLSelectKernel &&) = default;
+    /** Allow instances of this class to be moved */
+    CLSelectKernel &operator=(CLSelectKernel &&) = default;
+    /** Default destructor */
+    ~CLSelectKernel() = default;
+    /** Initialise the kernel's inputs and output.
+     *
+     * @param[in]  c      Condition input tensor. Data types supported: U8.
+     * @param[in]  x      First input tensor. Data types supported: U8/S8/QASYMM8/U16/S16/U32/S32/F16/F32.
+     * @param[out] y      Second input tensor. Data types supported: Same as @p x
+     * @param[in]  output Output tensor. Data types supported: Same as @p x.
+     */
+    void configure(const ICLTensor *c, const ICLTensor *x, const ICLTensor *y, ICLTensor *output);
+    /** Static function to check if given info will lead to a valid configuration of @ref CLSelectKernel
+     *
+     * @param[in] c      Condition input tensor. Data types supported: U8.
+     * @param[in] x      First input tensor. Data types supported: U8/S8/QASYMM8/U16/S16/U32/S32/F16/F32.
+     * @param[in] y      Second input tensor. Data types supported: Same as @p x
+     * @param[in] output Output tensor. Data types supported: Same as @p x.
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *c, const ITensorInfo *x, const ITensorInfo *y, const ITensorInfo *output);
+
+    // Inherited methods overridden:
+    void run(const Window &window, cl::CommandQueue &queue) override;
+
+private:
+    const ICLTensor *_c;             /**< Condition tensor */
+    const ICLTensor *_x;             /**< Source tensor 1 */
+    const ICLTensor *_y;             /**< Source tensor 2 */
+    ICLTensor       *_output;        /**< Destination tensor */
+    bool             _has_same_rank; /**< Flag that indicates if condition tensor and other inputs have the same rank */
+};
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_CLWHEREKERNEL_H__ */