1/*
2 * Copyright (c) 2023-2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#ifndef HISTREAMER_PIPELINE_CORE_PIPELINE_H
17#define HISTREAMER_PIPELINE_CORE_PIPELINE_H
18
19#include <string>
20#include <vector>
21#include <memory>
22#include "common/status.h"
23#include "filter/filter.h"
24#include "osal/task/mutex.h"
25
26namespace OHOS {
27namespace Media {
28namespace Pipeline {
29class FilterCallback;
30
31class Pipeline : public EventReceiver {
32public:
33    ~Pipeline();
34
35    void Init(const std::shared_ptr<EventReceiver>& receiver,
36        const std::shared_ptr<FilterCallback>& callback, const std::string& groupId);
37
38    Status Prepare();
39
40    Status Start();
41
42    Status Pause();
43
44    Status Resume();
45
46    Status Stop();
47
48    Status Flush();
49
50    Status Release();
51
52    Status Preroll(bool render);
53
54    Status SetPlayRange(int64_t start, int64_t end);
55
56    Status AddHeadFilters(std::vector<std::shared_ptr<Filter>> filters);
57
58    Status RemoveHeadFilter(const std::shared_ptr<Filter>& filter);
59
60    Status LinkFilters(const std::shared_ptr<Filter>& preFilter,
61                       const std::vector<std::shared_ptr<Filter>>& filters, StreamType type);
62
63    Status UpdateFilters(const std::shared_ptr<Filter>& preFilter,
64                         const std::vector<std::shared_ptr<Filter>>& filters, StreamType type);
65
66    Status UnLinkFilters(const std::shared_ptr<Filter>& preFilter,
67                         const std::vector<std::shared_ptr<Filter>>& filters, StreamType type);
68
69    void OnEvent(const Event& event) override;
70
71    static int32_t GetNextPipelineId();
72private:
73    std::string groupId_;
74    Mutex mutex_ {};
75    std::vector<std::shared_ptr<Filter>> filters_ {};
76    std::shared_ptr<EventReceiver> eventReceiver_ {nullptr};
77    std::shared_ptr<FilterCallback> filterCallback_ {nullptr};
78};
79} // namespace Pipeline
80} // namespace Media
81} // namespace OHOS
82#endif // HISTREAMER_PIPELINE_CORE_PIPELINE_H
83