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// 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_STREAM_HANDLER_DEFAULT_INPUT_STREAM_HANDLER_H_
#define MEDIAPIPE_FRAMEWORK_STREAM_HANDLER_DEFAULT_INPUT_STREAM_HANDLER_H_
#include <memory>
#include <vector>
// TODO: Move protos in another CL after the C++ code migration.
#include "mediapipe/framework/input_stream_handler.h"
#include "mediapipe/framework/stream_handler/default_input_stream_handler.pb.h"
namespace mediapipe {
// Implementation of the "default" input stream handler that is applied on a
// given CalculatorGraph when no input stream handler is explicitly specified.
class DefaultInputStreamHandler : public InputStreamHandler {
public:
DefaultInputStreamHandler() = delete;
DefaultInputStreamHandler(std::shared_ptr<tool::TagMap> tag_map,
CalculatorContextManager* cc_manager,
const MediaPipeOptions& options,
bool calculator_run_in_parallel);
protected:
// In DefaultInputStreamHandler, a node is "ready" if:
// - all streams are done (need to call Close() in this case), or
// - the minimum bound (over all empty streams) is greater than the smallest
// timestamp of any stream, which means we have received all the packets
// that will be available at the next timestamp.
NodeReadiness GetNodeReadiness(Timestamp* min_stream_timestamp) override;
// Only invoked when associated GetNodeReadiness() returned kReadyForProcess.
void FillInputSet(Timestamp input_timestamp,
InputStreamShardSet* input_set) override;
};
} // namespace mediapipe
#endif // MEDIAPIPE_FRAMEWORK_STREAM_HANDLER_DEFAULT_INPUT_STREAM_HANDLER_H_
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