From 8f486613be58ced269db1d437e560c16558604e8 Mon Sep 17 00:00:00 2001 From: becquet Date: Thu, 10 May 2007 18:49:20 +0000 Subject: Création de chuck, le programme du robot 2007. --- i/chuck/src/data/data_circular_buffer.hh | 64 ++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 i/chuck/src/data/data_circular_buffer.hh (limited to 'i/chuck/src/data/data_circular_buffer.hh') diff --git a/i/chuck/src/data/data_circular_buffer.hh b/i/chuck/src/data/data_circular_buffer.hh new file mode 100644 index 0000000..f08426d --- /dev/null +++ b/i/chuck/src/data/data_circular_buffer.hh @@ -0,0 +1,64 @@ +#ifndef data_circular_buffer_hh +#define data_circular_buffer_hh +// data_circular_buffer.hh +// marvin - programme du robot 2006. {{{ +// +// Copyright (C) 2006 Dufour Jérémy +// +// Robot APB Team/Efrei 2004. +// Web: http://assos.efrei.fr/robot/ +// Email: robot AT efrei DOT fr +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} + +#include "data_input.hh" +#include "data_output.hh" + +#include // uint8_t + +class DataCircularBuffer : public DataInput, public DataOutput +{ + private: + /// Calculate the quantity of maximum data we can read. + unsigned maxReadableData (void) + { return (endPos_ + size_ - startPos_) % size_; } + /// Internal read, do the real job. + unsigned internalRead (uint8_t *data, unsigned size); + /// Buffer. + uint8_t *buffer_; + /// Size of the buffer. + unsigned size_; + /// Start and end positions of data in the buffer. + unsigned startPos_, endPos_; + public: + /// Default constructor. + /// Size is the allocated size in memory. + DataCircularBuffer (unsigned size); + /// Destructor. + ~DataCircularBuffer (void); + /// Read data of maximum size in the data pointer (data must be allocated + /// of size). + unsigned read (uint8_t *data, unsigned size); + /// Write data of size length. + void write (const uint8_t *data, unsigned size); + /// Size of the buffer. + unsigned size (void) const { return size_; } + /// Swap data between tow DataCircularBuffer. + void swap (DataCircularBuffer &d); +}; + +#endif // data_circular_buffer_hh -- cgit v1.2.3