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 FLAC_EXTRACTOR_H_
18 #define FLAC_EXTRACTOR_H_
19 
20 #include <media/stagefright/DataSource.h>
21 #include <media/stagefright/MediaExtractor.h>
22 #include <utils/String8.h>
23 
24 namespace android {
25 
26 class FLACParser;
27 
28 class FLACExtractor : public MediaExtractor {
29 
30 public:
31     // Extractor assumes ownership of source
32     FLACExtractor(const sp<DataSource> &source);
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 "FLACExtractor"; }
40 
41 protected:
42     virtual ~FLACExtractor();
43 
44 private:
45     sp<DataSource> mDataSource;
46     sp<FLACParser> mParser;
47     status_t mInitCheck;
48     sp<MetaData> mFileMetadata;
49 
50     // There is only one track
51     sp<MetaData> mTrackMetadata;
52 
53     status_t init();
54 
55     FLACExtractor(const FLACExtractor &);
56     FLACExtractor &operator=(const FLACExtractor &);
57 
58 };
59 
60 bool SniffFLAC(const sp<DataSource> &source, String8 *mimeType,
61         float *confidence, sp<AMessage> *);
62 
63 }  // namespace android
64 
65 #endif  // FLAC_EXTRACTOR_H_
66