chromium/third_party/mediapipe/src/mediapipe/framework/legacy_calculator_support.h

// Copyright 2019 The MediaPipe Authors.
//
// 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.

#ifndef MEDIAPIPE_FRAMEWORK_LEGACY_CALCULATOR_SUPPORT_H_
#define MEDIAPIPE_FRAMEWORK_LEGACY_CALCULATOR_SUPPORT_H_

#include "mediapipe/framework/calculator_context.h"
#include "mediapipe/framework/calculator_contract.h"

namespace mediapipe {

class LegacyCalculatorSupport { … };

#if !defined(_MSC_VER) || defined(__clang__)
// We only declare this variable for two specializations of the template because
// it is only meant to be used for these two types.
// Note that, since these variables are members of specific template
// _specializations_, they are not themselves templates, and therefore their
// definitions must be in the .cc file. However, a declaration still needs to be
// included in the header, or some compilers will assume they have no
// definition.
template <>
thread_local CalculatorContext*
    LegacyCalculatorSupport::Scoped<CalculatorContext>::current_;
template <>
thread_local CalculatorContract*
    LegacyCalculatorSupport::Scoped<CalculatorContract>::current_;
#endif

}  // namespace mediapipe

#endif  // MEDIAPIPE_FRAMEWORK_LEGACY_CALCULATOR_SUPPORT_H_