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/stagefright/MediaExtractor.h> 23 24namespace android { 25 26struct AMessage; 27class DataSource; 28class String8; 29 30class WAVExtractor : public MediaExtractor { 31public: 32 // Extractor assumes ownership of "source". 33 WAVExtractor(const sp<DataSource> &source); 34 35 virtual size_t countTracks(); 36 virtual sp<MediaSource> getTrack(size_t index); 37 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 38 39 virtual sp<MetaData> getMetaData(); 40 41protected: 42 virtual ~WAVExtractor(); 43 44private: 45 sp<DataSource> mDataSource; 46 status_t mInitCheck; 47 bool mValidFormat; 48 uint16_t mWaveFormat; 49 uint16_t mNumChannels; 50 uint32_t mSampleRate; 51 uint16_t mBitsPerSample; 52 off64_t mDataOffset; 53 size_t mDataSize; 54 sp<MetaData> mTrackMeta; 55 56 status_t init(); 57 58 WAVExtractor(const WAVExtractor &); 59 WAVExtractor &operator=(const WAVExtractor &); 60}; 61 62bool SniffWAV( 63 const sp<DataSource> &source, String8 *mimeType, float *confidence, 64 sp<AMessage> *); 65 66} // namespace android 67 68#endif // WAV_EXTRACTOR_H_ 69 70