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