1 //
2 // srecord - manipulate eprom load files
3 // Copyright (C) 1998, 1999, 2001, 2002, 2006-2008, 2010 Peter Miller
4 //
5 // This program is free software; you can redistribute it and/or modify
6 // it under the terms of the GNU Lesser General Public License as published by
7 // the Free Software Foundation; either version 3 of the License, or
8 // (at your option) any later version.
9 //
10 // This program is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU Lesser General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public License
16 // along with this program. If not, see
17 // <http://www.gnu.org/licenses/>.
18 //
19
20 #include <srecord/input/filter/unsplit.h>
21 #include <srecord/record.h>
22
23
~input_filter_unsplit()24 srecord::input_filter_unsplit::~input_filter_unsplit()
25 {
26 }
27
28
input_filter_unsplit(const srecord::input::pointer & a1,int a2,int a3,int a4)29 srecord::input_filter_unsplit::input_filter_unsplit(
30 const srecord::input::pointer &a1, int a2, int a3, int a4) :
31 srecord::input_filter(a1),
32 modulus(a2),
33 offset(a3),
34 width(a4),
35 buffer(),
36 buffer_pos(0)
37 {
38 }
39
40
41 srecord::input::pointer
create(const input::pointer & a_deeper,int a2,int a3,int a4)42 srecord::input_filter_unsplit::create(const input::pointer &a_deeper, int a2,
43 int a3, int a4)
44 {
45 return pointer(new srecord::input_filter_unsplit(a_deeper, a2, a3, a4));
46 }
47
48
49 bool
read(srecord::record & record)50 srecord::input_filter_unsplit::read(srecord::record &record)
51 {
52 for (;;)
53 {
54 while
55 (
56 buffer.get_type() != srecord::record::type_data
57 ||
58 buffer_pos >= buffer.get_length()
59 )
60 {
61 if (!srecord::input_filter::read(buffer))
62 return false;
63 if (buffer.get_type() != srecord::record::type_data)
64 {
65 record = buffer;
66 return true;
67 }
68 buffer_pos = 0;
69 }
70
71 unsigned long addr = buffer.get_address() + buffer_pos;
72 unsigned char c = buffer.get_data(buffer_pos++);
73 int phase = addr % width;
74 addr = (addr / width) * modulus + phase + offset;
75 record = srecord::record(srecord::record::type_data, addr, &c, 1);
76 return true;
77 }
78 }
79