libopenraw
orfcontainer.cpp
1 /*
2  * libopenraw - orfcontainer.cpp
3  *
4  * Copyright (C) 2006-2016 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 
26 using namespace Debug;
27 
28 namespace OpenRaw {
29 
30 namespace Internals {
31 
32 OrfContainer::OrfContainer(const IO::Stream::Ptr &_file, off_t _offset)
33  : IfdFileContainer(_file, _offset), subtype_(0)
34 {
35 }
36 
38 {
39 }
40 
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  Trace(DEBUG1) << "Identified EL ORF file. Subtype = " << p[3]
51  << "\n";
52  subtype_ = p[3];
53  return ENDIAN_LITTLE;
54  }
55  } else if ((p[0] == 'M') && (p[1] == 'M')) {
56  if ((p[3] == 'R') && ((p[2] == 'O') || (p[2] == 'S'))) {
57 
58  Trace(DEBUG1) << "Identified BE ORF file. Subtype = " << p[2]
59  << "\n";
60  subtype_ = p[2];
61  return ENDIAN_BIG;
62  }
63  }
64 
65  Trace(ERROR) << "Unidentified ORF file\n";
66 
67  return ENDIAN_NULL;
68 }
69 }
70 }
CIFF is the container for CRW files. It is an attempt from Canon to make this a standard. I guess it failed.
Definition: arwfile.cpp:30
virtual IfdFileContainer::EndianType isMagicHeader(const char *p, int len) override
Definition: trace.cpp:30