1 /*
2  * Copyright (C) 2009 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 MP3_EXTRACTOR_H_
18 
19 #define MP3_EXTRACTOR_H_
20 
21 #include <utils/Errors.h>
22 #include <media/MediaExtractorPluginApi.h>
23 #include <media/MediaExtractorPluginHelper.h>
24 #include <media/NdkMediaFormat.h>
25 
26 namespace android {
27 
28 class DataSourceHelper;
29 
30 struct AMessage;
31 struct MP3Seeker;
32 class String8;
33 struct Mp3Meta;
34 
35 class MP3Extractor : public MediaExtractorPluginHelper {
36 public:
37     MP3Extractor(DataSourceHelper *source, Mp3Meta *meta);
38     ~MP3Extractor();
39 
40     virtual size_t countTracks();
41     virtual MediaTrackHelper *getTrack(size_t index);
42     virtual media_status_t getTrackMetaData(AMediaFormat *meta, size_t index, uint32_t flags);
43 
44     virtual media_status_t getMetaData(AMediaFormat *meta);
name()45     virtual const char * name() { return "MP3Extractor"; }
46 
47 private:
48     status_t mInitCheck = NO_INIT;
49 
50     DataSourceHelper *mDataSource = NULL;
51     off64_t mFirstFramePos = -1;
52     AMediaFormat *mMeta = NULL;
53     uint32_t mFixedHeader = 0;
54     MP3Seeker *mSeeker = NULL;
55 
56     MP3Extractor(const MP3Extractor &);
57     MP3Extractor &operator=(const MP3Extractor &);
58 };
59 
60 }  // namespace android
61 
62 #endif  // MP3_EXTRACTOR_H_
63