72 lines
3.0 KiB
C++
72 lines
3.0 KiB
C++
/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_LITE_TOOLS_SIGNATURE_DEF_UTIL_H_
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#define TENSORFLOW_LITE_TOOLS_SIGNATURE_DEF_UTIL_H_
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#include "tensorflow/core/lib/core/status.h"
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#include "tensorflow/core/platform/status.h"
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#include "tensorflow/core/protobuf/meta_graph.pb.h"
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#include "tensorflow/lite/c/common.h"
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#include "tensorflow/lite/schema/schema_generated.h"
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namespace tflite {
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// Constant for name of the Metadata entry associated with SignatureDefs.
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constexpr char kSignatureDefsMetadataName[] = "signature_defs_metadata";
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// The function `SetSignatureDefMap()` results in
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// `model_data_with_signature_defs` containing a serialized TFLite model
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// identical to `model` with a metadata and associated buffer containing
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// a FlexBuffer::Map with `signature_def_map` keys and values serialized to
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// String.
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//
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// If a Metadata entry containing a SignatureDef map exists, it will be
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// overwritten.
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//
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// Returns error if `model_data_with_signature_defs` is null or
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// `signature_def_map` is empty.
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//
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// On success, returns tensorflow::Status::OK() or error otherwise.
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// On error, `model_data_with_signature_defs` is unchanged.
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tensorflow::Status SetSignatureDefMap(
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const Model* model,
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const std::map<std::string, tensorflow::SignatureDef>& signature_def_map,
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std::string* model_data_with_signature_defs);
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// The function `HasSignatureDef()` returns true if `model` contains a Metadata
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// table pointing to a buffer containing a FlexBuffer::Map and the map has
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// `signature_key` as a key, or false otherwise.
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bool HasSignatureDef(const Model* model, const std::string& signature_key);
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// The function `GetSignatureDefMap()` results in `signature_def_map`
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// pointing to a map<std::string, tensorflow::SignatureDef>
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// parsed from `model`'s metadata buffer.
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//
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// If the Metadata entry does not exist, `signature_def_map` is unchanged.
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// If the Metadata entry exists but cannot be parsed, returns an error.
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tensorflow::Status GetSignatureDefMap(
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const Model* model,
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std::map<std::string, tensorflow::SignatureDef>* signature_def_map);
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// The function `ClearSignatureDefs` results in `model_data`
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// containing a serialized Model identical to `model` omitting any
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// SignatureDef-related metadata or buffers.
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tensorflow::Status ClearSignatureDefMap(const Model* model,
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std::string* model_data);
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} // namespace tflite
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#endif // TENSORFLOW_LITE_TOOLS_SIGNATURE_DEF_UTIL_H_
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