1 files changed, 116 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/arm_conv/pooling/pooling_implementation.hpp b/src/core/NEON/kernels/arm_conv/pooling/pooling_implementation.hpp
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+++ b/src/core/NEON/kernels/arm_conv/pooling/pooling_implementation.hpp
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2021-2023 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.
+ */
+#pragma once
+
+#include "pooling.hpp"
+
+#include <cstddef>
+#include <functional>
+#include <cstring>
+
+namespace arm_conv {
+namespace pooling {
+
+template <typename TInput, typename TOutput, class OutputStage = Nothing>
+struct PoolingImplementation
+{
+  const PoolingMethod method;
+  const char * name;
+  std::function<bool(const PoolingArgs &, const OutputStage &)> is_supported;
+  std::function<uint64_t(const PoolingArgs &, const OutputStage &)> cycle_estimate;
+  std::function<PoolingCommon<TInput, TOutput> *(const PoolingArgs &, const OutputStage &)> initialise;
+
+  bool get_is_supported(const PoolingArgs &args, const OutputStage &os) const
+  {
+    return (is_supported == nullptr) ? true : is_supported(args, os);
+  }
+
+  uint64_t get_cycle_estimate(const PoolingArgs &args, const OutputStage &os) const
+  {
+    return (cycle_estimate == nullptr) ? 0 : cycle_estimate(args, os);
+  }
+
+  PoolingCommon<TInput, TOutput> *get_instance(const PoolingArgs &args, const OutputStage &os) const
+  {
+    return initialise(args, os);
+  }
+};
+
+/**
+ * \relates PoolingImplementation
+ */
+template <typename TInput, typename TOutput, class OutputStage = Nothing>
+const PoolingImplementation<TInput, TOutput, OutputStage> *pooling_implementation_list();
+
+template <typename TInput, typename TOutput, class OutputStage = Nothing>
+bool find_implementation(
+  const PoolingArgs &args,
+  const OutputStage &os,
+  const PoolingImplementation<TInput, TOutput, OutputStage> * &selected
+)
+{
+  // For now, return the first valid implementation
+  const auto *impl = pooling_implementation_list<TInput, TOutput, OutputStage>();
+  for (; impl->method != PoolingMethod::DEFAULT; impl++)
+  {
+    if (args.config != nullptr)
+    {
+      // Apply filters provided by the configuration
+      const auto cfg = args.config;
+
+      if (cfg->filter != "" && !std::strstr(impl->name, cfg->filter.c_str()))
+      {
+        continue;
+      }
+    }
+
+    if (impl->get_is_supported(args, os))
+    {
+      selected = impl;
+      return true;
+    }
+  }
+  return false;
+}
+
+template <typename TInput, typename TOutput, class OutputStage>
+UniquePoolingCommon<TInput, TOutput> pooling(const PoolingArgs &args, const OutputStage &os)
+{
+  const PoolingImplementation<TInput, TOutput, OutputStage> *impl = nullptr;
+  const bool success = find_implementation<TInput, TOutput, OutputStage>(args, os, impl);
+  return UniquePoolingCommon<TInput, TOutput>(success ? impl->get_instance(args, os) : nullptr);
+}
+
+template <class Strategy>
+bool is_supported(const PoolingArgs &args, const Nothing &)
+{
+  return ((args.pool_type == Strategy::pooling_type) &&
+          (args.pool_window.rows == Strategy::pool_rows) &&
+          (args.pool_window.cols == Strategy::pool_cols) &&
+          (args.pool_stride.rows == Strategy::stride_rows) &&
+          (args.pool_stride.cols == Strategy::stride_cols));
+}
+
+}  //  namespace pooling
+}  //  namespace arm_conv