87 lines
2.6 KiB
C++
87 lines
2.6 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_DELEGATES_GPU_SPI_H_
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#define TENSORFLOW_LITE_DELEGATES_GPU_SPI_H_
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#include <cstdint>
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#include "tensorflow/lite/delegates/gpu/api.h"
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#include "tensorflow/lite/delegates/gpu/common/access_type.h"
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#include "tensorflow/lite/delegates/gpu/common/status.h"
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// Contains only service provider-related interfaces. Users should not use them
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// directly.
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namespace tflite {
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namespace gpu {
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// Converts a tensor object into another one.
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class TensorObjectConverter {
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public:
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virtual ~TensorObjectConverter() = default;
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virtual absl::Status Convert(const TensorObject& input,
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const TensorObject& output) = 0;
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};
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class TensorObjectConverterBuilder {
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public:
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virtual ~TensorObjectConverterBuilder() = default;
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virtual bool IsSupported(const TensorObjectDef& input,
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const TensorObjectDef& output) const = 0;
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virtual absl::Status MakeConverter(
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const TensorObjectDef& input, const TensorObjectDef& output,
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std::unique_ptr<TensorObjectConverter>* converter) = 0;
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};
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// Connects tensor definition provided by a user (external) with tensor
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// definition used by the inference engine (internal).
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struct TensorTieDef {
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uint32_t id;
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AccessType access_type;
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TensorObjectDef internal_def;
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TensorObjectDef external_def;
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};
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// Connects external tensor object to internal tensor object and provides
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// functionality to copy data to/from external object to internal.
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class TensorTie {
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public:
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explicit TensorTie(const TensorTieDef& def) : def_(def) {}
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virtual ~TensorTie() = default;
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virtual absl::Status SetExternalObject(TensorObject obj) = 0;
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virtual TensorObject GetExternalObject() = 0;
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virtual absl::Status CopyToExternalObject() = 0;
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virtual absl::Status CopyFromExternalObject() = 0;
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const TensorTieDef& def() const { return def_; }
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private:
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const TensorTieDef def_;
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};
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} // namespace gpu
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} // namespace tflite
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#endif // TENSORFLOW_LITE_DELEGATES_GPU_SPI_H_
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