1 files changed, 150 insertions, 0 deletions
diff --git a/runtime/neurun/core/src/exec/interp/operations/Concat.cc b/runtime/neurun/core/src/exec/interp/operations/Concat.cc
new file mode 100644
index 000000000..a127e5f30
--- /dev/null
+++ b/runtime/neurun/core/src/exec/interp/operations/Concat.cc
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2019 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.
+ */
+
+#include <cker/operation/Concatenation.h>
+
+#include "OperationUtil.h"
+
+#include "exec/interp/Registration.h"
+#include "ir/operation/Concat.h"
+#include "misc/polymorphic_downcast.h"
+
+namespace neurun
+{
+namespace exec
+{
+namespace interp
+{
+namespace concat
+{
+
+void prepareConcat(ExecEnv *env, const ir::Operation &node)
+{
+  const auto &concat_node = nnfw::misc::polymorphic_downcast<const ir::operation::Concat &>(node);
+
+  const auto first_index = node.getInputs().at(0);
+  const auto out_index = node.getOutputs().at(0);
+
+  const auto first_tensor = env->tensorAt(first_index);
+  uint32_t out_axis_dimension = 0;
+  const int32_t axis_raw = concat_node.param().axis;
+  const uint32_t axis = (axis_raw < 0) ? (axis_raw + first_tensor->num_dimensions()) : axis_raw;
+
+  // All inputs shape should be same except axis dimension
+  // All inputs type should be same
+  for (auto input : node.getInputs())
+  {
+    assert(first_tensor->num_dimensions() == env->tensorAt(input)->num_dimensions());
+    assert(first_tensor->data_type() == env->tensorAt(input)->data_type());
+    for (uint32_t i = 0; i < first_tensor->num_dimensions(); i++)
+    {
+      if (i == axis)
+      {
+        out_axis_dimension += env->tensorAt(input)->dimension(i);
+        continue;
+      }
+      assert(first_tensor->dimension(i) == env->tensorAt(input)->dimension(i));
+    }
+  }
+
+  // Make output tensor info using first input tensor info, and accumulated axis dimension value
+  auto out_shape = first_tensor->tensorInfo().shape();
+  out_shape.dim(axis) = out_axis_dimension;
+  env->allocateIfNeeded(out_index,
+                        ir::OperandInfo{out_shape, first_tensor->tensorInfo().typeInfo()});
+
+  auto out_tensor = env->tensorAt(out_index);
+  UNUSED_RELEASE(out_tensor);
+
+  // Output shape should be same with input except axis dimension
+  // Output type should be same with input
+  assert(first_tensor->data_type() == out_tensor->data_type());
+  for (uint32_t i = 0; i < first_tensor->num_dimensions(); i++)
+  {
+    if (i == axis)
+    {
+      continue;
+    }
+    assert(first_tensor->dimension(i) == out_tensor->dimension(i));
+  }
+}
+
+void invoke(const std::vector<const ITensor *> in_tensors, const ITensor *out_tensor, uint32_t axis)
+{
+  const uint32_t count = in_tensors.size();
+
+  // Calculate
+  nnfw::cker::ConcatenationParams cker_param;
+  cker_param.axis = (int8_t)axis;
+  cker_param.inputs_count = count;
+
+  const auto out_shape = convertShape(out_tensor->tensorInfo().shape());
+
+  std::vector<nnfw::cker::Shape> in_shapes;
+  std::vector<const nnfw::cker::Shape *> in_shape_ptrs;
+  in_shapes.reserve(count);
+  in_shape_ptrs.reserve(count);
+  std::vector<const float *> in_ptrs;
+  for (uint32_t i = 0; i < count; i++)
+  {
+    in_shapes.push_back(convertShape(in_tensors[i]->tensorInfo().shape()));
+    in_shape_ptrs.push_back(&in_shapes[i]);
+    in_ptrs.push_back(reinterpret_cast<const float *>(in_tensors[i]->bufferRO()));
+  }
+
+  auto out_buffer = out_tensor->buffer();
+  float *out_ptr = reinterpret_cast<float *>(out_buffer);
+
+  nnfw::cker::Concatenation<float>(cker_param, in_shape_ptrs.data(), in_ptrs.data(), out_shape,
+                                   out_ptr);
+}
+
+void invokeConcat(const ExecEnv *env, const ir::Operation &node)
+{
+  const auto &concat_node = nnfw::misc::polymorphic_downcast<const ir::operation::Concat &>(node);
+  const int32_t axis_raw = concat_node.param().axis;
+
+  std::vector<const ITensor *> in_tensors;
+  for (const auto &e : concat_node.getInputs())
+  {
+    in_tensors.emplace_back(env->tensorAt(e));
+  }
+
+  const auto out_index = node.getOutputs().at(0);
+  const auto out_tensor = env->tensorAt(out_index);
+  const uint32_t axis = (axis_raw < 0) ? (axis_raw + out_tensor->num_dimensions()) : axis_raw;
+
+  const auto data_type = in_tensors[0]->data_type();
+  if (data_type == ir::DataType::FLOAT32)
+  {
+    invoke(in_tensors, out_tensor, axis);
+  }
+  else
+  {
+    throw std::runtime_error{"NYI: Support float32 only"};
+  }
+}
+} // namespace concat
+
+OpKernel *getConcat()
+{
+  static OpKernel kernel = {concat::prepareConcat, concat::invokeConcat};
+  return &kernel;
+}
+
+} // namespace interp
+} // namespace exec
+} // namespace neurun