WAVExtractor.h revision f99f049dd228333e3d6f886efe373f8e461ff2da
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 <media/stagefright/MediaExtractor.h> 22 23namespace android { 24 25class DataSource; 26class String8; 27 28class WAVExtractor : public MediaExtractor { 29public: 30 // Extractor assumes ownership of "source". 31 WAVExtractor(const sp<DataSource> &source); 32 33 virtual size_t countTracks(); 34 virtual sp<MediaSource> getTrack(size_t index); 35 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 36 37 virtual sp<MetaData> getMetaData(); 38 39protected: 40 virtual ~WAVExtractor(); 41 42private: 43 sp<DataSource> mDataSource; 44 status_t mInitCheck; 45 bool mValidFormat; 46 uint16_t mNumChannels; 47 uint32_t mSampleRate; 48 uint16_t mBitsPerSample; 49 off_t mDataOffset; 50 size_t mDataSize; 51 sp<MetaData> mTrackMeta; 52 53 status_t init(); 54 55 WAVExtractor(const WAVExtractor &); 56 WAVExtractor &operator=(const WAVExtractor &); 57}; 58 59bool SniffWAV( 60 const sp<DataSource> &source, String8 *mimeType, float *confidence); 61 62} // namespace android 63 64#endif // WAV_EXTRACTOR_H_ 65 66