/src/freeimage-svn/FreeImage/trunk/Source/OpenEXR/IlmImf/ImfGenericInputFile.cpp
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1 | | /////////////////////////////////////////////////////////////////////////// |
2 | | // |
3 | | // Copyright (c) 2011, Industrial Light & Magic, a division of Lucas |
4 | | // Digital Ltd. LLC |
5 | | // |
6 | | // All rights reserved. |
7 | | // |
8 | | // Redistribution and use in source and binary forms, with or without |
9 | | // modification, are permitted provided that the following conditions are |
10 | | // met: |
11 | | // * Redistributions of source code must retain the above copyright |
12 | | // notice, this list of conditions and the following disclaimer. |
13 | | // * Redistributions in binary form must reproduce the above |
14 | | // copyright notice, this list of conditions and the following disclaimer |
15 | | // in the documentation and/or other materials provided with the |
16 | | // distribution. |
17 | | // * Neither the name of Industrial Light & Magic nor the names of |
18 | | // its contributors may be used to endorse or promote products derived |
19 | | // from this software without specific prior written permission. |
20 | | // |
21 | | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
22 | | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
23 | | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
24 | | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
25 | | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
26 | | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
27 | | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
28 | | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
29 | | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
30 | | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
31 | | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
32 | | // |
33 | | /////////////////////////////////////////////////////////////////////////// |
34 | | |
35 | | #include "ImfGenericInputFile.h" |
36 | | |
37 | | #include <ImfVersion.h> |
38 | | #include <ImfXdr.h> |
39 | | #include <Iex.h> |
40 | | #include <OpenEXRConfig.h> |
41 | | |
42 | | OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER |
43 | | |
44 | | void GenericInputFile::readMagicNumberAndVersionField(OPENEXR_IMF_INTERNAL_NAMESPACE::IStream& is, int& version) |
45 | 0 | { |
46 | | // |
47 | | // Read the magic number and the file format version number. |
48 | | // Then check if we can read the rest of this file. |
49 | | // |
50 | |
|
51 | 0 | int magic; |
52 | |
|
53 | 0 | OPENEXR_IMF_INTERNAL_NAMESPACE::Xdr::read <OPENEXR_IMF_INTERNAL_NAMESPACE::StreamIO> (is, magic); |
54 | 0 | OPENEXR_IMF_INTERNAL_NAMESPACE::Xdr::read <OPENEXR_IMF_INTERNAL_NAMESPACE::StreamIO> (is, version); |
55 | |
|
56 | 0 | if (magic != MAGIC) |
57 | 0 | { |
58 | 0 | throw IEX_NAMESPACE::InputExc ("File is not an image file."); |
59 | 0 | } |
60 | | |
61 | 0 | if (getVersion (version) != EXR_VERSION) |
62 | 0 | { |
63 | 0 | THROW (IEX_NAMESPACE::InputExc, "Cannot read " |
64 | 0 | "version " << getVersion (version) << " " |
65 | 0 | "image files. Current file format version " |
66 | 0 | "is " << EXR_VERSION << "."); |
67 | 0 | } |
68 | | |
69 | 0 | if (!supportsFlags (getFlags (version))) |
70 | 0 | { |
71 | 0 | THROW (IEX_NAMESPACE::InputExc, "The file format version number's flag field " |
72 | 0 | "contains unrecognized flags."); |
73 | 0 | } |
74 | 0 | } |
75 | | |
76 | | OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT |