55 lines
2.0 KiB
C++
55 lines
2.0 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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#include "mediapipe/framework/test_service.h"
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namespace mediapipe {
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const GraphService<TestServiceObject> kTestService("test_service");
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const GraphService<int> kAnotherService("another_service");
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absl::Status TestServiceCalculator::GetContract(CalculatorContract* cc) {
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cc->Inputs().Index(0).Set<int>();
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cc->Outputs().Index(0).SetSameAs(&cc->Inputs().Index(0));
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// This service will be required. The graph won't start without it.
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cc->UseService(kTestService);
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// This service is optional for this calculator.
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cc->UseService(kAnotherService).Optional();
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return absl::OkStatus();
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}
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absl::Status TestServiceCalculator::Open(CalculatorContext* cc) {
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cc->SetOffset(TimestampDiff(0));
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// For an optional service, check whether it's available.
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if (cc->Service(kAnotherService).IsAvailable()) {
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optional_bias_ = cc->Service(kAnotherService).GetObject();
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}
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return absl::OkStatus();
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}
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absl::Status TestServiceCalculator::Process(CalculatorContext* cc) {
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int value = cc->Inputs().Index(0).Value().Get<int>();
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// A required service is sure to be available, so we can just GetObject.
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TestServiceObject& service_object = cc->Service(kTestService).GetObject();
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int delta = service_object["delta"];
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service_object["count"] += 1;
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int x = value + delta + optional_bias_;
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cc->Outputs().Index(0).Add(new int(x), cc->InputTimestamp());
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return absl::OkStatus();
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}
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REGISTER_CALCULATOR(TestServiceCalculator);
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} // namespace mediapipe
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