1 /*
2  * Copyright (c) 2021-2021 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_PLUGIN_CORE_DEMUXER_H
17 #define HISTREAMER_PLUGIN_CORE_DEMUXER_H
18 
19 #include <memory>
20 #include "plugin/common/plugin_buffer.h"
21 #include "plugin/core/base.h"
22 
23 namespace OHOS {
24 namespace Media {
25 namespace Plugin {
26 struct MediaInfoHelper {
27     Meta globalMeta;
28     std::vector<Meta> trackMeta;
29 };
30 
31 struct DataSourceHelper {
32     virtual ~DataSourceHelper() = default;
33     virtual Status ReadAt(int64_t offset, std::shared_ptr<Buffer> &buffer, size_t expectedLen) = 0;
34     virtual Status GetSize(uint64_t& size) = 0;
35     virtual Seekable GetSeekable() = 0;
36 };
37 
38 struct DemuxerPlugin;
39 
40 class Demuxer : public Base {
41 public:
42     Demuxer(const Demuxer &) = delete;
43     Demuxer operator=(const Demuxer &) = delete;
44     ~Demuxer() override = default;
45 
46     Status SeekTo(int32_t trackId, int64_t seekTime, SeekMode mode, int64_t& realSeekTime);
47 
48     Status SetDataSource(const std::shared_ptr<DataSourceHelper> &source);
49 
50     Status GetMediaInfo(MediaInfoHelper &mediaInfo);
51 
52     Status ReadFrame(Buffer &info, int32_t timeOutMs);
53 
54 private:
55     friend class PluginManager;
56 
57     Demuxer(uint32_t pkgVer, uint32_t apiVer, std::shared_ptr<DemuxerPlugin> plugin);
58 
59 private:
60     std::shared_ptr<DemuxerPlugin> demuxer_;
61 };
62 } // namespace Plugin
63 } // namespace Media
64 } // namespace OHOS
65 #endif // HISTREAMER_PLUGIN_CORE_DEMUXER_H
66