libopenraw
orfcontainer.cpp
1/*
2 * libopenraw - orfcontainer.cpp
3 *
4 * Copyright (C) 2006-2017 Hubert Figuière
5 *
6 * This library is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public License
8 * as published by the Free Software Foundation, either version 3 of
9 * the License, or (at your option) any later version.
10 *
11 * This library 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library. If not, see
18 * <http://www.gnu.org/licenses/>.
19 */
20
21#include <libopenraw/debug.h>
22
23#include "trace.hpp"
24#include "orfcontainer.hpp"
25
26using namespace Debug;
27
28namespace OpenRaw {
29
30namespace Internals {
31
32OrfContainer::OrfContainer(const IO::Stream::Ptr &_file, off_t _offset)
33 : IfdFileContainer(_file, _offset), subtype_(0)
34{
35}
36
37OrfContainer::~OrfContainer()
38{
39}
40
41IfdFileContainer::EndianType OrfContainer::isMagicHeader(const char *p, int len)
42{
43 if (len < 4) {
44 // we need at least 4 bytes to check
45 return ENDIAN_NULL;
46 }
47 if ((p[0] == 'I') && (p[1] == 'I')) {
48 if ((p[2] == 'R') && ((p[3] == 'O') || (p[3] == 'S'))) {
49
50 LOGDBG1("Identified EL ORF file. Subtype = %c\n", p[3]);
51 subtype_ = p[3];
52 return ENDIAN_LITTLE;
53 }
54 } else if ((p[0] == 'M') && (p[1] == 'M')) {
55 if ((p[3] == 'R') && ((p[2] == 'O') || (p[2] == 'S'))) {
56
57 LOGDBG1("Identified BE ORF file. Subtype = %c\n", p[2]);
58 subtype_ = p[2];
59 return ENDIAN_BIG;
60 }
61 }
62
63 LOGERR("Unidentified ORF file\n");
64
65 return ENDIAN_NULL;
66}
67}
68}
CIFF is the container for CRW files. It is an attempt from Canon to make this a standard....
Definition: arwfile.cpp:30