65 lines
2.8 KiB
C++
65 lines
2.8 KiB
C++
/* Copyright 2019 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_EXPERIMENTAL_RESOURCE_LOOKUP_INTERFACES_H_
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#define TENSORFLOW_LITE_EXPERIMENTAL_RESOURCE_LOOKUP_INTERFACES_H_
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#include <unordered_map>
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#include "tensorflow/lite/c/common.h"
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#include "tensorflow/lite/experimental/resource/lookup_util.h"
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#include "tensorflow/lite/experimental/resource/resource_base.h"
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#include "tensorflow/lite/kernels/internal/tensor_ctypes.h"
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#include "tensorflow/lite/string_util.h"
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namespace tflite {
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namespace resource {
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/// WARNING: Experimental interface, subject to change.
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// A resource hash table interface. It's similar to TensorFlow core's
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// LookupInterface class. But it's identified with int32 ID in TFLite (instead
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// of using Resource handle like TensorFlow).
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class LookupInterface : public ResourceBase {
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public:
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virtual TfLiteStatus Lookup(TfLiteContext* context, const TfLiteTensor* keys,
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TfLiteTensor* values,
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const TfLiteTensor* default_value) = 0;
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virtual TfLiteStatus Import(TfLiteContext* context, const TfLiteTensor* keys,
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const TfLiteTensor* values) = 0;
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virtual size_t Size() = 0;
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virtual TfLiteType GetKeyType() const = 0;
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virtual TfLiteType GetValueType() const = 0;
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virtual TfLiteStatus CheckKeyAndValueTypes(TfLiteContext* context,
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const TfLiteTensor* keys,
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const TfLiteTensor* values) = 0;
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};
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// Creates an resource hash table, shared among all the subgraphs with the
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// given resource id if there is an existing one.
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// WARNING: Experimental interface, subject to change.
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void CreateHashtableResourceIfNotAvailable(ResourceMap* resources,
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int resource_id,
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TfLiteType key_dtype,
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TfLiteType value_dtype);
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// Returns the corresponding resource hash table, or nullptr if none.
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// WARNING: Experimental interface, subject to change.
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LookupInterface* GetHashtableResource(ResourceMap* resources, int resource_id);
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} // namespace resource
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} // namespace tflite
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#endif // TENSORFLOW_LITE_EXPERIMENTAL_RESOURCE_LOOKUP_INTERFACES_H_
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