3 files changed, 227 insertions, 0 deletions
diff --git a/runtimes/neurun/src/internal/nnapi/feature/Reader.h b/runtimes/neurun/src/internal/nnapi/feature/Reader.h
new file mode 100644
index 000000000..eb513512d
--- /dev/null
+++ b/runtimes/neurun/src/internal/nnapi/feature/Reader.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __INTERNAL_NNAPI_FEATURE_READER_H__
+#define __INTERNAL_NNAPI_FEATURE_READER_H__
+
+#include "internal/nnapi/feature/Utils.h"
+
+#include "util/feature/Reader.h"
+
+namespace internal
+{
+namespace nnapi
+{
+namespace feature
+{
+
+template <typename T> class Reader;
+
+template <> class Reader<float> final : public nnfw::util::feature::Reader<float>
+{
+public:
+  Reader(const ::nnfw::util::feature::Shape &shape, const uint8_t *ptr, size_t len)
+      : _shape{shape}, _ptr{ptr}, _len{len}
+  {
+    // DO NOTHING
+  }
+
+public:
+  const nnfw::util::feature::Shape &shape(void) const { return _shape; }
+
+public:
+  float at(uint32_t ch, uint32_t row, uint32_t col) const override
+  {
+    uint32_t index = index_of(_shape, ch, row, col);
+
+    const auto arr = reinterpret_cast<const float *>(_ptr);
+
+    return arr[index];
+  }
+  float at(uint32_t batch, uint32_t ch, uint32_t row, uint32_t col) const override
+  {
+    uint32_t index = index_of(_shape, batch, ch, row, col);
+
+    const auto arr = reinterpret_cast<const float *>(_ptr);
+
+    return arr[index];
+  }
+
+private:
+  nnfw::util::feature::Shape _shape;
+
+private:
+  const uint8_t *_ptr;
+  const size_t _len;
+};
+
+} // namespace feature
+} // namespace nnapi
+} // namespace internal
+
+#endif // __INTERNAL_NNAPI_FEATURE_READER_H__
diff --git a/runtimes/neurun/src/internal/nnapi/feature/Utils.h b/runtimes/neurun/src/internal/nnapi/feature/Utils.h
new file mode 100644
index 000000000..e6e1e71bd
--- /dev/null
+++ b/runtimes/neurun/src/internal/nnapi/feature/Utils.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __INTERNAL_NNAPI_FEATURE_UTILS_H__
+#define __INTERNAL_NNAPI_FEATURE_UTILS_H__
+
+#include "util/feature/Shape.h"
+
+namespace internal
+{
+namespace nnapi
+{
+namespace feature
+{
+
+inline uint32_t index_of(const ::nnfw::util::feature::Shape &shape, uint32_t ch, uint32_t row,
+                         uint32_t col)
+{
+  uint32_t res = 0;
+
+  // NNAPI uses NHWC ordering
+  res += row * shape.W * shape.C;
+  res += col * shape.C;
+  res += ch;
+
+  return res;
+}
+
+inline uint32_t index_of(const ::nnfw::util::feature::Shape &shape, uint32_t batch, uint32_t ch,
+                         uint32_t row, uint32_t col)
+{
+  uint32_t res = 0;
+
+  // NNAPI uses NHWC ordering
+  res += batch * shape.H * shape.W * shape.C;
+  res += row * shape.W * shape.C;
+  res += col * shape.C;
+  res += ch;
+
+  return res;
+}
+
+} // namespace feature
+} // namespace nnapi
+} // namespace internal
+
+#endif // __INTERNAL_NNAPI_FEATURE_UTILS_H__
diff --git a/runtimes/neurun/src/internal/nnapi/feature/View.h b/runtimes/neurun/src/internal/nnapi/feature/View.h
new file mode 100644
index 000000000..60335dbf1
--- /dev/null
+++ b/runtimes/neurun/src/internal/nnapi/feature/View.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __INTERNAL_NNAPI_FEATURE_VIEW_H__
+#define __INTERNAL_NNAPI_FEATURE_VIEW_H__
+
+#include "internal/nnapi/feature/Utils.h"
+
+#include "util/feature/Reader.h"
+
+namespace internal
+{
+namespace nnapi
+{
+namespace feature
+{
+
+template <typename T> class View final : public nnfw::util::feature::Reader<float>
+{
+public:
+  View(const ::nnfw::util::feature::Shape &shape, uint8_t *ptr, size_t len)
+      : _shape{shape}, _ptr{ptr}, _len{len}
+  {
+    // DO NOTHING
+  }
+
+public:
+  const nnfw::util::feature::Shape &shape(void) const { return _shape; }
+
+public:
+  T at(uint32_t ch, uint32_t row, uint32_t col) const override
+  {
+    uint32_t index = index_of(_shape, ch, row, col);
+
+    T *arr = reinterpret_cast<T *>(_ptr);
+
+    return arr[index];
+  }
+
+  T at(uint32_t batch, uint32_t ch, uint32_t row, uint32_t col) const override
+  {
+    uint32_t index = index_of(_shape, batch, ch, row, col);
+
+    T *arr = reinterpret_cast<T *>(_ptr);
+
+    return arr[index];
+  }
+
+  T &at(uint32_t ch, uint32_t row, uint32_t col)
+  {
+    uint32_t index = index_of(_shape, ch, row, col);
+
+    T *arr = reinterpret_cast<T *>(_ptr);
+
+    return arr[index];
+  }
+
+  T &at(uint32_t batch, uint32_t ch, uint32_t row, uint32_t col)
+  {
+    uint32_t index = index_of(_shape, batch, ch, row, col);
+
+    T *arr = reinterpret_cast<T *>(_ptr);
+
+    return arr[index];
+  }
+
+private:
+  nnfw::util::feature::Shape _shape;
+
+private:
+  uint8_t *_ptr;
+  const size_t _len;
+};
+
+} // namespace feature
+} // namespace nnapi
+} // namespace internal
+
+#endif // __INTERNAL_NNAPI_FEATURE_VIEW_H__