/*
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* task_taits.h
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*
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* Copyright (c) 2021 Rockchip Electronics Co., Ltd.
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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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* Author: Cody Xie <cody.xie@rock-chips.com>
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*/
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#ifndef TASK_TRAITS_H
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#define TASK_TRAITS_H
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#include <chrono>
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#include <memory>
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namespace XCam {
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enum class TaskResult {
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kSuccess, // Output valid
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kAgain, // Need more inputs
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kSkipped, // The result is skipped
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kFailed, // Process failed
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};
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template <typename R, typename... Ts>
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struct Task {
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R operator()(Ts... args);
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};
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enum class ParamState {
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kNull, // Holds empty value
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kAllocated, // Initial state, allocated but no content
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kReadyForProcess, // Filled with content, waiting to be processed
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kProcessing, // Being proccessing by task
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kProcessedError, // Be Processed but failed
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kProcessedSuccess, // Be Processed, waiting to be dequeued
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kProcessedDequed, // Be processed and dequed, canbe either error or
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// success,
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kMaxState,
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};
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// template <typename T>
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// using ServiceParam = std::pair<ParamState, std::shared_ptr<T>>;
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template <typename T>
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struct ServiceParam {
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ParamState state; // params state
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int32_t unique_id; // same as frame id
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std::shared_ptr<T> payload; // holds actual params
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};
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template <typename T>
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struct ServiceTask : public Task<TaskResult, ServiceParam<T>> {
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ServiceTask() = default;
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// Allow inherit class to dtor
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virtual ~ServiceTask() = default;
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virtual TaskResult operator()(ServiceParam<T>& p) { return TaskResult::kSkipped; }
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};
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using TaskDuration = std::chrono::duration<double, std::milli>;
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using TaskTimePoint = std::chrono::time_point<std::chrono::system_clock>;
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constexpr uint8_t default_max_param_count = 5;
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constexpr TaskDuration default_process_time = TaskDuration(33);
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constexpr bool default_may_block = false;
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}; // namespace XCam
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#endif // TASK_TRAITS_H
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