Make CL Pooling kernels and functions state-less

Resolves COMPMID-4000

Change-Id: I64878f93c033b4928fdefbb964c37c67fdecfaab
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4971
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/src/runtime/gpu/cl/operators/ClPooling.h b/src/runtime/gpu/cl/operators/ClPooling.h
new file mode 100644
index 0000000000..99de6d0dcf
--- /dev/null
+++ b/src/runtime/gpu/cl/operators/ClPooling.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2021 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_CL_POOLING_H
+#define ARM_COMPUTE_CL_POOLING_H
+
+#include "src/core/gpu/cl/ClCompileContext.h"
+#include "src/runtime/gpu/cl/IClOperator.h"
+
+#include <memory>
+
+namespace arm_compute
+{
+namespace opencl
+{
+/** Basic function to simulate a pooling layer with the specified pooling operation. This function calls the following OpenCL kernels:
+ *
+ * -# @ref CLFillBorderKernel (executed if padding size is different from zero)
+ * -# @ref opencl::ClPooling
+ */
+class ClPooling : public IClOperator
+{
+public:
+    /** Constructor */
+    ClPooling() = default;
+    /** Configure operator for a given list of arguments
+     *
+     * @param[in]  compile_context The compile context to be used.
+     * @param[in]  src             Source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
+     * @param[out] dst             Destination tensor info. Data type supported: same as @p src
+     * @param[in]  info            Pooling layer parameters.
+     * @param[out] indices         (optional) The indices info of the maximal values. Data type supported: U32.
+     */
+    void configure(const ClCompileContext &compile_context, ITensorInfo *src, ITensorInfo *dst, const PoolingLayerInfo &info, ITensorInfo *indices = nullptr);
+    /** Static function to check if given info will lead to a valid configuration of @ref ClPooling
+     *
+     * @param[in]  src     Source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
+     * @param[out] dst     Destination tensor info. Data type supported: same as @p src
+     * @param[in]  info    Pooling layer parameters.
+     * @param[out] indices (optional) The indices info of the maximal values. Data type supported: U32.
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *src, const ITensorInfo *dst, const PoolingLayerInfo &info, const ITensorInfo *indices = nullptr);
+
+    // Inherited method overridden
+    void run(ITensorPack &tensors) override;
+
+private:
+    std::unique_ptr<ICLKernel> _pooling{ nullptr };
+    std::unique_ptr<ICLKernel> _border_handler{ nullptr };
+};
+} // namespace opencl
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_CL_POOLING_H */