AudioBufferProviderSource.h revision 010662326b9c43c703725f933e95e0897f8a6bdd
1010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten/* 2010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * Copyright (C) 2012 The Android Open Source Project 3010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * 4010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * Licensed under the Apache License, Version 2.0 (the "License"); 5010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * you may not use this file except in compliance with the License. 6010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * You may obtain a copy of the License at 7010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * 8010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * http://www.apache.org/licenses/LICENSE-2.0 9010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * 10010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * Unless required by applicable law or agreed to in writing, software 11010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * distributed under the License is distributed on an "AS IS" BASIS, 12010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * See the License for the specific language governing permissions and 14010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten * limitations under the License. 15010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten */ 16010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 17010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten// Implementation of NBAIO_Source that wraps an AudioBufferProvider 18010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 19010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten#ifndef ANDROID_AUDIO_BUFFER_PROVIDER_SOURCE_H 20010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten#define ANDROID_AUDIO_BUFFER_PROVIDER_SOURCE_H 21010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 22010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten#include "NBAIO.h" 23010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten#include "AudioBufferProvider.h" 24010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 25010662326b9c43c703725f933e95e0897f8a6bddGlenn Kastennamespace android { 26010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 27010662326b9c43c703725f933e95e0897f8a6bddGlenn Kastenclass AudioBufferProviderSource : public NBAIO_Source { 28010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 29010662326b9c43c703725f933e95e0897f8a6bddGlenn Kastenpublic: 30010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten AudioBufferProviderSource(AudioBufferProvider *provider, NBAIO_Format format); 31010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten virtual ~AudioBufferProviderSource(); 32010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 33010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten // NBAIO_Port interface 34010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 35010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten //virtual ssize_t negotiate(const NBAIO_Format offers[], size_t numOffers, 36010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten // NBAIO_Format counterOffers[], size_t& numCounterOffers); 37010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten //virtual NBAIO_Format format(); 38010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 39010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten // NBAIO_Source interface 40010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 41010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten //virtual size_t framesRead() const; 42010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten //virtual size_t framesOverrun(); 43010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten //virtual size_t overruns(); 44010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten virtual ssize_t availableToRead(); 45010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten virtual ssize_t read(void *buffer, size_t count); 46010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten virtual ssize_t readVia(readVia_t via, size_t total, void *user, size_t block); 47010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 48010662326b9c43c703725f933e95e0897f8a6bddGlenn Kastenprivate: 49010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten AudioBufferProvider * const mProvider; 50010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten AudioBufferProvider::Buffer mBuffer; // current buffer 51010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten size_t mConsumed; // number of frames consumed so far from current buffer 52010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten}; 53010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 54010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten} // namespace android 55010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten 56010662326b9c43c703725f933e95e0897f8a6bddGlenn Kasten#endif // ANDROID_AUDIO_BUFFER_PROVIDER_SOURCE_H 57