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 WAV_EXTRACTOR_H_
18 
19 #define WAV_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 struct AMessage;
29 struct CDataSource;
30 class String8;
31 
32 class WAVExtractor : public MediaExtractorPluginHelper {
33 public:
34     explicit WAVExtractor(DataSourceHelper *source);
35 
36     virtual size_t countTracks();
37     virtual MediaTrackHelper *getTrack(size_t index);
38     virtual media_status_t getTrackMetaData(AMediaFormat *meta, size_t index, uint32_t flags);
39 
40     virtual media_status_t getMetaData(AMediaFormat *meta);
name()41     virtual const char * name() { return "WAVExtractor"; }
42 
43     virtual ~WAVExtractor();
44 
45 private:
46     DataSourceHelper *mDataSource;
47     status_t mInitCheck;
48     bool mValidFormat;
49     uint16_t mWaveFormat;
50     uint16_t mNumChannels;
51     uint32_t mChannelMask;
52     uint32_t mSampleRate;
53     uint16_t mBitsPerSample;
54     off64_t mDataOffset;
55     size_t mDataSize;
56     AMediaFormat *mTrackMeta;
57 
58     status_t init();
59 
60     WAVExtractor(const WAVExtractor &);
61     WAVExtractor &operator=(const WAVExtractor &);
62 };
63 
64 }  // namespace android
65 
66 #endif  // WAV_EXTRACTOR_H_
67 
68