1 /*
2  * Copyright (C) 2011 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 AAC_EXTRACTOR_H_
18 
19 #define AAC_EXTRACTOR_H_
20 
21 #include <media/MediaExtractor.h>
22 #include <media/stagefright/MetaDataBase.h>
23 
24 #include <utils/Vector.h>
25 
26 namespace android {
27 
28 struct AMessage;
29 class String8;
30 
31 class AACExtractor : public MediaExtractor {
32 public:
33     AACExtractor(DataSourceBase *source, off64_t offset);
34 
35     virtual size_t countTracks();
36     virtual MediaTrack *getTrack(size_t index);
37     virtual status_t getTrackMetaData(MetaDataBase& meta, size_t index, uint32_t flags);
38 
39     virtual status_t getMetaData(MetaDataBase& meta);
name()40     virtual const char * name() { return "AACExtractor"; }
41 
42 protected:
43     virtual ~AACExtractor();
44 
45 private:
46     DataSourceBase *mDataSource;
47     MetaDataBase mMeta;
48     status_t mInitCheck;
49 
50     Vector<uint64_t> mOffsetVector;
51     int64_t mFrameDurationUs;
52 
53     AACExtractor(const AACExtractor &);
54     AACExtractor &operator=(const AACExtractor &);
55 };
56 
57 bool SniffAAC(
58         DataSourceBase *source, String8 *mimeType, float *confidence, off64_t *offset);
59 
60 }  // namespace android
61 
62 #endif  // AAC_EXTRACTOR_H_
63