1 /* 2 * Copyright (C) 2011 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 #ifndef _READ_BUFFER_H 17 #define _READ_BUFFER_H 18 19 #include "IOStream.h" 20 21 class ReadBuffer { 22 public: 23 ReadBuffer(IOStream *stream, size_t bufSize); 24 ~ReadBuffer(); 25 int getData(); // get fresh data from the stream 26 unsigned char *buf() { return m_readPtr; } // return the next read location 27 size_t validData() { return m_validData; } // return the amount of valid data in readptr 28 void consume(size_t amount); // notify that 'amount' data has been consumed; 29 private: 30 unsigned char *m_buf; 31 unsigned char *m_readPtr; 32 size_t m_size; 33 size_t m_validData; 34 IOStream *m_stream; 35 }; 36 #endif 37
