Field3D
OData.cpp
Go to the documentation of this file.
1//-*****************************************************************************
2//
3// Copyright (c) 2013,
4// Sony Pictures Imageworks Inc. and
5// Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
6//
7// All rights reserved.
8//
9// Redistribution and use in source and binary forms, with or without
10// modification, are permitted provided that the following conditions are
11// met:
12// * Redistributions of source code must retain the above copyright
13// notice, this list of conditions and the following disclaimer.
14// * Redistributions in binary form must reproduce the above
15// copyright notice, this list of conditions and the following disclaimer
16// in the documentation and/or other materials provided with the
17// distribution.
18// * Neither the name of Industrial Light & Magic nor the names of
19// its contributors may be used to endorse or promote products derived
20// from this software without specific prior written permission.
21//
22// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33//
34//-*****************************************************************************
35
36#include "OGroup.h"
37#include "OData.h"
38#include "OStream.h"
39
40namespace Alembic {
41namespace Ogawa {
42namespace ALEMBIC_VERSION_NS {
43
44class OData::PrivateData
45{
46public:
47
48 // for the empty dataset
49 PrivateData()
50 {
51 pos = 0;
52 size = 0;
53 }
54
55 PrivateData(OStreamPtr iStream,
56 Alembic::Util::uint64_t iPos,
57 Alembic::Util::uint64_t iSize) :
58 stream(iStream), pos(iPos), size(iSize) {}
59
60 ~PrivateData() {}
61
62 OStreamPtr stream;
63
64 Alembic::Util::uint64_t pos;
65 Alembic::Util::uint64_t size;
66};
67
68OData::OData() : mData(new OData::PrivateData())
69{
70}
71
72OData::OData(OStreamPtr iStream,
73 Alembic::Util::uint64_t iPos,
74 Alembic::Util::uint64_t iSize)
75 : mData(new OData::PrivateData(iStream, iPos, iSize))
76{
77}
78
79OData::~OData()
80{
81}
82
83void OData::rewrite(Alembic::Util::uint64_t iSize, void * iData,
84 Alembic::Util::uint64_t iOffset)
85{
86
87 // don't write anything if we will write beyond our buffer or the
88 // stream is invalid
89 if (!mData->stream || iSize == 0 || mData->size == 0 ||
90 iOffset + iSize > mData->size)
91 {
92 return;
93 }
94
95 // +8 is to account for the written out size
96 mData->stream->seek(mData->pos + iOffset + 8);
97 mData->stream->write(iData, iSize);
98}
99
100Alembic::Util::uint64_t OData::getSize() const
101{
102 return mData->size;
103}
104
105Alembic::Util::uint64_t OData::getPos() const
106{
107 return mData->pos;
108}
109
110} // End namespace ALEMBIC_VERSION_NS
111} // End namespace Ogawa
112} // End namespace Alembic
#define FIELD3D_MTX_T
Definition StdMathLib.h:99