csplugincommon/sndsys/cyclicbuf.h
Go to the documentation of this file.00001 /* 00002 Copyright (C) 2004 by Andrew Mann 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public 00015 License along with this library; if not, write to the Free 00016 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00017 */ 00018 00019 #ifndef __CS_SNDSYS_CYCLICBUF_H__ 00020 #define __CS_SNDSYS_CYCLICBUF_H__ 00021 00026 namespace CrystalSpace 00027 { 00028 00032 class SoundCyclicBuffer 00033 { 00034 public: 00036 SoundCyclicBuffer(size_t buffer_size); 00037 ~SoundCyclicBuffer(); 00038 00040 size_t GetFreeBytes(); 00041 00047 void AddBytes(void *bytes_ptr, size_t bytes_length); 00048 00052 size_t GetStartValue(); 00057 size_t GetEndValue(); 00062 void AdvanceStartValue (size_t advance_amount); 00063 00067 void Clear (long value=0); 00068 00072 void GetDataPointersFromPosition (size_t* position_value, size_t max_length, 00073 uint8 **buffer1, size_t* buffer1_length, uint8 **buffer2, 00074 size_t* buffer2_length); 00075 00079 size_t GetLength() { return length; }; 00080 00081 private: 00083 size_t length; 00085 00089 size_t start_value; 00090 size_t end_value; 00092 00094 00098 uint8 *buffer_base; 00099 uint8 *write_ptr; 00101 }; 00102 00103 } // namespace CrystalSpace 00104 00105 #endif // __CS_SNDSYS_CYCLICBUF_H__
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