input_stream_manager.h | Explore in Territory

// 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_INPUT_STREAM_MANAGER_H_
#define MEDIAPIPE_FRAMEWORK_INPUT_STREAM_MANAGER_H_

#include <cstdint>
#include <deque>
#include <functional>
#include <list>
#include <string>

#include "absl/base/thread_annotations.h"
#include "absl/synchronization/mutex.h"
#include "mediapipe/framework/packet.h"
#include "mediapipe/framework/packet_type.h"
#include "mediapipe/framework/port.h"
#include "mediapipe/framework/port/status.h"
#include "mediapipe/framework/timestamp.h"

namespace mediapipe {

// An OutputStreamManager will add packets to InputStreamManager through
// InputStreamHandler as they are output.  A CalculatorNode prepares the input
// packets for a particular invocation by calling InputStreamManager's
// PopPacketAtTimestamp() or PopQueueHead() function through InputStreamHandler.
//
// The InputStreamManager may be closed by the consumer. When the
// InputStreamManager is closed, any further modifications to it by the producer
// are silently ignored.
//
// An input stream is written to by exactly one output stream and is read by a
// single node. None of its methods should hold a lock when they invoke a
// callback in the scheduler.
class InputStreamManager { … };

}  // namespace mediapipe

#endif  // MEDIAPIPE_FRAMEWORK_INPUT_STREAM_MANAGER_H_
chromium/third_party/mediapipe/src/mediapipe/framework/input_stream_manager.h
