2 Copyright 2004-2005 Chris Tallon
4 This file is part of VOMP.
6 VOMP is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 VOMP is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with VOMP; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "ringbuffer.h"
23 Ringbuffer::Ringbuffer()
32 Ringbuffer::~Ringbuffer()
34 if (buffer) free(buffer);
42 int Ringbuffer::init(size_t size)
45 buffer = (UCHAR*)malloc(capacity);
46 if (!buffer) return 0;
52 int Ringbuffer::put(UCHAR* from, size_t amount)
54 if (amount > capacity) return 0;
56 if ((end + amount) <= (buffer + capacity))
58 memcpy(end, from, amount);
62 if (end == (buffer + capacity)) end = buffer;
63 if (content >= capacity)
72 size_t firstAmount = buffer + capacity - end;
73 return (put(from, firstAmount) && put(from + firstAmount, amount - firstAmount));
77 int Ringbuffer::get(UCHAR* to, size_t amount)
79 if (amount > content) return get(to, content);
81 if ((start + amount) <= (buffer + capacity))
83 memcpy(to, start, amount);
87 if (start == (buffer + capacity)) start = buffer;
92 size_t firstAmount = buffer + capacity - start;
93 return (get(to, firstAmount) + get(to + firstAmount, amount - firstAmount));
97 int Ringbuffer::getContent()