49 lines
1.9 KiB
C++
49 lines
1.9 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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//
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// Abstract base class for basic MediaPipe calculators that operate on
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// TimeSeries streams and don't require any Options protos.
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// Subclasses must override ProcessMatrix, and optionally
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// MutateHeader.
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#ifndef MEDIAPIPE_CALCULATORS_AUDIO_BASIC_TIME_SERIES_CALCULATORS_H_
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#define MEDIAPIPE_CALCULATORS_AUDIO_BASIC_TIME_SERIES_CALCULATORS_H_
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#include "mediapipe/framework/calculator_framework.h"
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#include "mediapipe/framework/formats/matrix.h"
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#include "mediapipe/framework/formats/time_series_header.pb.h"
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namespace mediapipe {
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class BasicTimeSeriesCalculatorBase : public CalculatorBase {
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public:
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static absl::Status GetContract(CalculatorContract* cc);
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absl::Status Open(CalculatorContext* cc) final;
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absl::Status Process(CalculatorContext* cc) final;
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protected:
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// Open() calls this method to mutate the output stream header. The input
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// to this function will contain a copy of the input stream header, so
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// subclasses that do not need to mutate the header do not need to override
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// it.
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virtual absl::Status MutateHeader(TimeSeriesHeader* output_header);
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// Process() calls this method on each packet to compute the output matrix.
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virtual Matrix ProcessMatrix(const Matrix& input_matrix) = 0;
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};
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} // namespace mediapipe
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#endif // MEDIAPIPE_CALCULATORS_AUDIO_BASIC_TIME_SERIES_CALCULATORS_H_
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