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