lbajardsilogic@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
lbajardsilogic@0: 
lbajardsilogic@0: /*
lbajardsilogic@0:     Sonic Visualiser
lbajardsilogic@0:     An audio file viewer and annotation editor.
lbajardsilogic@0:     Centre for Digital Music, Queen Mary, University of London.
lbajardsilogic@0:     This file copyright 2006 Chris Cannam.
lbajardsilogic@0:     
lbajardsilogic@0:     This program is free software; you can redistribute it and/or
lbajardsilogic@0:     modify it under the terms of the GNU General Public License as
lbajardsilogic@0:     published by the Free Software Foundation; either version 2 of the
lbajardsilogic@0:     License, or (at your option) any later version.  See the file
lbajardsilogic@0:     COPYING included with this distribution for more information.
lbajardsilogic@0: */
lbajardsilogic@0: 
lbajardsilogic@0: #ifndef _RESIZEABLE_BITMAP_H_
lbajardsilogic@0: #define _RESIZEABLE_BITMAP_H_
lbajardsilogic@0: 
lbajardsilogic@0: #include <vector>
lbajardsilogic@0: //#include <stdint.h>
lbajardsilogic@0: #include "system/System.h"
lbajardsilogic@0: 
lbajardsilogic@0: class ResizeableBitset {
lbajardsilogic@0: 
lbajardsilogic@0: public:
lbajardsilogic@0:     ResizeableBitset() : m_bits(0) {
lbajardsilogic@0:     }
lbajardsilogic@0:     ResizeableBitset(size_t size) : m_bits(new std::vector<uint8_t>) {
lbajardsilogic@0:         m_bits->assign((size >> 3) + 1, 0);
lbajardsilogic@0:     }
lbajardsilogic@0:     ResizeableBitset(const ResizeableBitset &b) {
lbajardsilogic@0:         m_bits = new std::vector<uint8_t>(*b.m_bits);
lbajardsilogic@0:     }
lbajardsilogic@0:     ResizeableBitset &operator=(const ResizeableBitset &b) {
lbajardsilogic@0:         if (&b != this) return *this;
lbajardsilogic@0:         delete m_bits;
lbajardsilogic@0:         m_bits = new std::vector<uint8_t>(*b.m_bits);
lbajardsilogic@0:         return *this;
lbajardsilogic@0:     }
lbajardsilogic@0:     ~ResizeableBitset() {
lbajardsilogic@0:         delete m_bits;
lbajardsilogic@0:     }
lbajardsilogic@0:     
lbajardsilogic@0:     void resize(size_t bits) { // losing all data
lbajardsilogic@0:         if (!m_bits || bits < m_bits->size()) {
lbajardsilogic@0:             delete m_bits;
lbajardsilogic@0:             m_bits = new std::vector<uint8_t>;
lbajardsilogic@0:         }
lbajardsilogic@0:         m_bits->assign((bits >> 3) + 1, 0);
lbajardsilogic@0:     }
lbajardsilogic@0:     
lbajardsilogic@0:     bool get(size_t column) const {
lbajardsilogic@0:         return ((*m_bits)[column >> 3]) & (1u << (column & 0x07));
lbajardsilogic@0:     }
lbajardsilogic@0:     
lbajardsilogic@0:     void set(size_t column) {
lbajardsilogic@0:         ((*m_bits)[column >> 3]) |=  (uint8_t(1) << (column & 0x07));
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     void reset(size_t column) {
lbajardsilogic@0:         ((*m_bits)[column >> 3]) &= ~(uint8_t(1) << (column & 0x07));
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     void copy(size_t source, size_t dest) {
lbajardsilogic@0:         get(source) ? set(dest) : reset(dest);
lbajardsilogic@0:     }
lbajardsilogic@0:     
lbajardsilogic@0: private:
lbajardsilogic@0:     std::vector<uint8_t> *m_bits;
lbajardsilogic@0: };
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: #endif
lbajardsilogic@0: