1 files changed, 138 insertions, 0 deletions
diff --git a/compiler/tf2circle/src/CustomopConfLoader.cpp b/compiler/tf2circle/src/CustomopConfLoader.cpp
new file mode 100644
index 000000000..412405893
--- /dev/null
+++ b/compiler/tf2circle/src/CustomopConfLoader.cpp
@@ -0,0 +1,138 @@
+/*
+ * 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 "CustomopConfLoader.h"
+
+#include <loco.h>
+#include <cwrap/Fildes.h>
+#include <angkor/TensorShape.h>
+
+#include <CustomOpInfo.pb.h>
+
+#include <google/protobuf/io/zero_copy_stream_impl.h>
+#include <google/protobuf/text_format.h>
+
+#include <fcntl.h>
+
+namespace
+{
+bool load_text(const cwrap::Fildes &fildes, tf2circle::CustomOpInfoDef &def)
+{
+  google::protobuf::io::FileInputStream fis(fildes.get());
+
+  return google::protobuf::TextFormat::Parse(&fis, &def);
+}
+
+angkor::TensorShape convert_shape(const tf2circle::ShapeProto &shape)
+{
+  angkor::TensorShape to_shape;
+
+  int64_t rank64 = shape.dim_size();
+  assert(rank64 < std::numeric_limits<uint32_t>::max());
+
+  int32_t rank = static_cast<int32_t>(rank64);
+  to_shape.resize(rank);
+
+  for (int32_t d = 0; d < rank; d++)
+  {
+    int64_t dim_value = shape.dim(d).size();
+    assert(dim_value >= 0ULL);
+    assert(dim_value < std::numeric_limits<uint32_t>::max());
+
+    uint32_t dim_value32 = static_cast<uint32_t>(dim_value);
+    to_shape.dim(d) = dim_value32;
+  }
+
+  return to_shape;
+}
+
+loco::DataType convert_dtype(const tf2circle::DataType &dtype)
+{
+  if (dtype == tf2circle::DT_FLOAT)
+    return loco::DataType::FLOAT32;
+  else if (dtype == tf2circle::DT_INT32)
+    return loco::DataType::S32;
+  else
+    throw std::runtime_error("Not yet supported datatype. Cannot convert.");
+}
+
+// Note : the following functions look similar with plier::tf::Convert.h.
+// However, the schema is different.(not "tensorflow::..." but "tf2circle::...")
+// So, plier::tf cannot be used.
+loco::DataType get_dtype_attr(const tf2circle::CustomOpDef &custom_op)
+{
+  std::string type_attr_name("dtype");
+
+  assert(custom_op.attr().count(type_attr_name) > 0);
+  const auto &attr = custom_op.attr().at(type_attr_name);
+  assert(attr.value_case() == tf2circle::AttrValue::kType);
+  auto dtype_def = attr.type();
+
+  return convert_dtype(dtype_def);
+}
+
+angkor::TensorShape get_shape_attr(const tf2circle::CustomOpDef &custom_op)
+{
+  std::string shape_attr_name("output_shape");
+
+  assert(custom_op.attr().count(shape_attr_name) > 0);
+  const auto &attr = custom_op.attr().at(shape_attr_name);
+  assert(attr.value_case() == tf2circle::AttrValue::kShape);
+  auto shape_def = attr.shape();
+
+  return convert_shape(shape_def);
+}
+
+void add_customop(tf2circle::CustomOpInfoDef &def, moco::ModelSignature &sig)
+{
+  for (const auto &custom_op : def.custom_op())
+  {
+    sig.add_customop(custom_op.op());
+
+    auto name = custom_op.name();
+
+    // setting dtype and shape to ModelSignature
+    sig.dtype(name, get_dtype_attr(custom_op));
+    sig.shape(name, get_shape_attr(custom_op));
+  }
+}
+
+} // namespace
+
+namespace tf2circle
+{
+
+void load_customop_conf(const std::string &path, moco::ModelSignature &sig)
+{
+  CustomOpInfoDef def;
+
+  // TODO Consider Windows
+  cwrap::Fildes fildes{open(path.c_str(), O_RDONLY)};
+
+  if (fildes.get() < 0)
+  {
+    throw std::runtime_error{"Error: " + path + " not found"};
+  }
+
+  if (!load_text(fildes, def))
+  {
+    throw std::runtime_error{"Error: Failed to parse prototxt " + path};
+  }
+
+  add_customop(def, sig);
+}
+
+} // namespace tf2circle