1 /* 2 * Copyright (C) 2012 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 ANDROID_AUDIO_LIBSNDFILE_SOURCE_H 18 #define ANDROID_AUDIO_LIBSNDFILE_SOURCE_H 19 20 #include <media/nbaio/NBAIO.h> 21 22 #include "sndfile.h" 23 24 // Implementation of NBAIO_Source that wraps a libsndfile opened in SFM_READ mode 25 26 namespace android { 27 28 class LibsndfileSource : public NBAIO_Source { 29 30 public: 31 // If 'loop' is true and it permits seeking, then we'll act as an infinite source 32 LibsndfileSource(SNDFILE *sndfile, const SF_INFO &sfinfo, bool loop = false); 33 virtual ~LibsndfileSource(); 34 35 // NBAIO_Port interface 36 37 //virtual ssize_t negotiate(const NBAIO_Format offers[], size_t numOffers, 38 // NBAIO_Format counterOffers[], size_t& numCounterOffers); 39 //virtual NBAIO_Format format() const; 40 41 // NBAIO_Source interface 42 43 //virtual size_t framesRead() const; 44 //virtual size_t framesOverrun(); 45 //virtual size_t overruns(); 46 virtual ssize_t availableToRead(); 47 virtual ssize_t read(void *buffer, size_t count); 48 //virtual ssize_t readVia(readVia_t via, size_t total, void *user, size_t block); 49 50 private: 51 SNDFILE * mSndfile; 52 sf_count_t mEstimatedFramesUntilEOF; 53 bool mLooping; 54 bool mReadAnyFramesThisLoopCycle; 55 }; 56 57 } // namespace android 58 59 #endif // ANDROID_AUDIO_LIBSNDFILE_SOURCE_H 60
