1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef MEDIA_EXTRACTOR_FACTORY_H_
18 
19 #define MEDIA_EXTRACTOR_FACTORY_H_
20 
21 #include <stdio.h>
22 
23 #include <media/IMediaExtractor.h>
24 #include <media/MediaExtractor.h>
25 #include <utils/List.h>
26 
27 namespace android {
28 
29 class DataSource;
30 struct ExtractorPlugin;
31 
32 class MediaExtractorFactory {
33 public:
34     static sp<IMediaExtractor> Create(
35             const sp<DataSource> &source, const char *mime = NULL);
36     static sp<IMediaExtractor> CreateFromService(
37             const sp<DataSource> &source, const char *mime = NULL);
38     static void LoadPlugins(const ::std::string& apkPath);
39     static status_t dump(int fd, const Vector<String16>& args);
40 
41 private:
42     static Mutex gPluginMutex;
43     static std::shared_ptr<List<sp<ExtractorPlugin>>> gPlugins;
44     static bool gPluginsRegistered;
45 
46     static void RegisterExtractorsInApk(
47             const char *apkPath, List<sp<ExtractorPlugin>> &pluginList);
48     static void RegisterExtractorsInSystem(
49             const char *libDirPath, List<sp<ExtractorPlugin>> &pluginList);
50     static void RegisterExtractor(
51             const sp<ExtractorPlugin> &plugin, List<sp<ExtractorPlugin>> &pluginList);
52 
53     static MediaExtractor::CreatorFunc sniff(DataSourceBase *source,
54             float *confidence, void **meta, MediaExtractor::FreeMetaFunc *freeMeta,
55             sp<ExtractorPlugin> &plugin);
56 
57     static void UpdateExtractors(const char *newUpdateApkPath);
58 };
59 
60 }  // namespace android
61 
62 #endif  // MEDIA_EXTRACTOR_FACTORY_H_
63