Ptex
ptex
PtexIO.h
Go to the documentation of this file.
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#ifndef PtexIO_h
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#define PtexIO_h
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/*
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PTEX SOFTWARE
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Copyright 2014 Disney Enterprises, Inc. All rights reserved
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* The names "Disney", "Walt Disney Pictures", "Walt Disney Animation
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Studios" or the names of its contributors may NOT be used to
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endorse or promote products derived from this software without
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specific prior written permission from Walt Disney Pictures.
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Disclaimer: THIS SOFTWARE IS PROVIDED BY WALT DISNEY PICTURES AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE, NONINFRINGEMENT AND TITLE ARE DISCLAIMED.
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IN NO EVENT SHALL WALT DISNEY PICTURES, THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND BASED ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "
Ptexture.h
"
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PTEX_NAMESPACE_BEGIN
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#pragma pack(push, 1)
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struct
Header
{
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uint32_t
magic
;
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uint32_t
version
;
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uint32_t
meshtype
;
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uint32_t
datatype
;
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int32_t
alphachan
;
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uint16_t
nchannels
;
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uint16_t
nlevels
;
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uint32_t
nfaces
;
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uint32_t
extheadersize
;
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uint32_t
faceinfosize
;
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uint32_t
constdatasize
;
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uint32_t
levelinfosize
;
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uint32_t
minorversion
;
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uint64_t
leveldatasize
;
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uint32_t
metadatazipsize
;
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uint32_t
metadatamemsize
;
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int
pixelSize
()
const
{
return
DataSize
(
DataType
(
datatype
)) *
nchannels
; }
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bool
hasAlpha
()
const
{
return
alphachan
>= 0 &&
alphachan
<
nchannels
; }
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};
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struct
ExtHeader
{
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uint16_t
ubordermode
;
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uint16_t
pad
;
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uint16_t
vbordermode
;
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uint16_t
edgefiltermode
;
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uint32_t
lmdheaderzipsize
;
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uint32_t
lmdheadermemsize
;
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uint64_t
lmddatasize
;
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uint64_t
editdatasize
;
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uint64_t
editdatapos
;
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};
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struct
LevelInfo
{
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uint64_t
leveldatasize
;
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uint32_t
levelheadersize
;
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uint32_t
nfaces
;
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LevelInfo
() :
leveldatasize
(0),
levelheadersize
(0),
nfaces
(0) {}
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};
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enum
Encoding
{
enc_constant
,
enc_zipped
,
enc_diffzipped
,
enc_tiled
};
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struct
FaceDataHeader
{
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uint32_t
data
;
// bits 0..29 = blocksize, bits 30..31 = encoding
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uint32_t
blocksize
()
const
{
return
data
& 0x3fffffff; }
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Encoding
encoding
()
const
{
return
Encoding
((
data
>> 30) & 0x3); }
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uint32_t&
val
() {
return
*(uint32_t*)
this
; }
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const
uint32_t&
val
()
const
{
return
*(
const
uint32_t*)
this
; }
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void
set
(uint32_t blocksizeArg,
Encoding
encodingArg)
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{
data
= (blocksizeArg & 0x3fffffff) | ((encodingArg & 0x3) << 30); }
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FaceDataHeader
() :
data
(0) {}
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};
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enum
EditType
{
et_editfacedata
,
et_editmetadata
};
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struct
EditFaceDataHeader
{
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uint32_t
faceid
;
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FaceInfo
faceinfo
;
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FaceDataHeader
fdh
;
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};
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struct
EditMetaDataHeader
{
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uint32_t
metadatazipsize
;
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uint32_t
metadatamemsize
;
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};
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#pragma pack(pop)
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const
uint32_t
Magic
=
'P'
| (
't'
<<8) | (
'e'
<<16) | (
'x'
<<24);
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const
int
HeaderSize
=
sizeof
(
Header
);
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const
int
ExtHeaderSize
=
sizeof
(
ExtHeader
);
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const
int
LevelInfoSize
=
sizeof
(
LevelInfo
);
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const
int
FaceDataHeaderSize
=
sizeof
(
FaceDataHeader
);
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const
int
EditFaceDataHeaderSize
=
sizeof
(
EditFaceDataHeader
);
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const
int
EditMetaDataHeaderSize
=
sizeof
(
EditMetaDataHeader
);
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// these constants can be tuned for performance
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const
int
IBuffSize
= 8192;
// default input buffer size
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const
int
BlockSize
= 16384;
// target block size for file I/O
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const
int
TileSize
= 65536;
// target tile size (uncompressed)
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const
int
AllocaMax
= 16384;
// max size for using alloca
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const
int
MetaDataThreshold
= 1024;
// cutoff for large meta data
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inline
bool
LittleEndian
() {
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short
word = 0x0201;
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return
*(
char
*)&word == 1;
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}
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PTEX_NAMESPACE_END
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#endif
Magic
const uint32_t Magic
Definition:
PtexIO.h:104
EditMetaDataHeaderSize
const int EditMetaDataHeaderSize
Definition:
PtexIO.h:110
FaceDataHeaderSize
const int FaceDataHeaderSize
Definition:
PtexIO.h:108
ExtHeaderSize
const int ExtHeaderSize
Definition:
PtexIO.h:106
EditFaceDataHeaderSize
const int EditFaceDataHeaderSize
Definition:
PtexIO.h:109
AllocaMax
const int AllocaMax
Definition:
PtexIO.h:116
HeaderSize
const int HeaderSize
Definition:
PtexIO.h:105
IBuffSize
const int IBuffSize
Definition:
PtexIO.h:113
LevelInfoSize
const int LevelInfoSize
Definition:
PtexIO.h:107
BlockSize
const int BlockSize
Definition:
PtexIO.h:114
LittleEndian
bool LittleEndian()
Definition:
PtexIO.h:119
EditType
EditType
Definition:
PtexIO.h:92
et_editfacedata
@ et_editfacedata
Definition:
PtexIO.h:92
et_editmetadata
@ et_editmetadata
Definition:
PtexIO.h:92
TileSize
const int TileSize
Definition:
PtexIO.h:115
Encoding
Encoding
Definition:
PtexIO.h:81
enc_diffzipped
@ enc_diffzipped
Definition:
PtexIO.h:81
enc_zipped
@ enc_zipped
Definition:
PtexIO.h:81
enc_constant
@ enc_constant
Definition:
PtexIO.h:81
enc_tiled
@ enc_tiled
Definition:
PtexIO.h:81
MetaDataThreshold
const int MetaDataThreshold
Definition:
PtexIO.h:117
PTEX_NAMESPACE_END
#define PTEX_NAMESPACE_END
Definition:
PtexVersion.h:62
Ptexture.h
Public API classes for reading, writing, caching, and filtering Ptex files.
PTEX_NAMESPACE_BEGIN
Definition:
PtexSeparableKernel.cpp:42
Ptex::DataSize
int DataSize(DataType dt)
Look up size of given data type (in bytes).
Definition:
Ptexture.h:130
Ptex::DataType
DataType
Type of data stored in texture file.
Definition:
Ptexture.h:72
EditFaceDataHeader
Definition:
PtexIO.h:93
EditFaceDataHeader::faceid
uint32_t faceid
Definition:
PtexIO.h:94
EditFaceDataHeader::fdh
FaceDataHeader fdh
Definition:
PtexIO.h:96
EditFaceDataHeader::faceinfo
FaceInfo faceinfo
Definition:
PtexIO.h:95
EditMetaDataHeader
Definition:
PtexIO.h:98
EditMetaDataHeader::metadatazipsize
uint32_t metadatazipsize
Definition:
PtexIO.h:99
EditMetaDataHeader::metadatamemsize
uint32_t metadatamemsize
Definition:
PtexIO.h:100
ExtHeader
Definition:
PtexIO.h:64
ExtHeader::edgefiltermode
uint16_t edgefiltermode
Definition:
PtexIO.h:68
ExtHeader::vbordermode
uint16_t vbordermode
Definition:
PtexIO.h:67
ExtHeader::ubordermode
uint16_t ubordermode
Definition:
PtexIO.h:65
ExtHeader::lmddatasize
uint64_t lmddatasize
Definition:
PtexIO.h:71
ExtHeader::editdatapos
uint64_t editdatapos
Definition:
PtexIO.h:73
ExtHeader::pad
uint16_t pad
Definition:
PtexIO.h:66
ExtHeader::lmdheadermemsize
uint32_t lmdheadermemsize
Definition:
PtexIO.h:70
ExtHeader::lmdheaderzipsize
uint32_t lmdheaderzipsize
Definition:
PtexIO.h:69
ExtHeader::editdatasize
uint64_t editdatasize
Definition:
PtexIO.h:72
FaceDataHeader
Definition:
PtexIO.h:82
FaceDataHeader::set
void set(uint32_t blocksizeArg, Encoding encodingArg)
Definition:
PtexIO.h:88
FaceDataHeader::encoding
Encoding encoding() const
Definition:
PtexIO.h:85
FaceDataHeader::val
uint32_t & val()
Definition:
PtexIO.h:86
FaceDataHeader::blocksize
uint32_t blocksize() const
Definition:
PtexIO.h:84
FaceDataHeader::val
const uint32_t & val() const
Definition:
PtexIO.h:87
FaceDataHeader::FaceDataHeader
FaceDataHeader()
Definition:
PtexIO.h:90
FaceDataHeader::data
uint32_t data
Definition:
PtexIO.h:83
Header
Definition:
PtexIO.h:44
Header::metadatamemsize
uint32_t metadatamemsize
Definition:
PtexIO.h:60
Header::faceinfosize
uint32_t faceinfosize
Definition:
PtexIO.h:54
Header::nlevels
uint16_t nlevels
Definition:
PtexIO.h:51
Header::nchannels
uint16_t nchannels
Definition:
PtexIO.h:50
Header::meshtype
uint32_t meshtype
Definition:
PtexIO.h:47
Header::constdatasize
uint32_t constdatasize
Definition:
PtexIO.h:55
Header::levelinfosize
uint32_t levelinfosize
Definition:
PtexIO.h:56
Header::extheadersize
uint32_t extheadersize
Definition:
PtexIO.h:53
Header::minorversion
uint32_t minorversion
Definition:
PtexIO.h:57
Header::metadatazipsize
uint32_t metadatazipsize
Definition:
PtexIO.h:59
Header::datatype
uint32_t datatype
Definition:
PtexIO.h:48
Header::pixelSize
int pixelSize() const
Definition:
PtexIO.h:61
Header::alphachan
int32_t alphachan
Definition:
PtexIO.h:49
Header::magic
uint32_t magic
Definition:
PtexIO.h:45
Header::nfaces
uint32_t nfaces
Definition:
PtexIO.h:52
Header::leveldatasize
uint64_t leveldatasize
Definition:
PtexIO.h:58
Header::version
uint32_t version
Definition:
PtexIO.h:46
Header::hasAlpha
bool hasAlpha() const
Definition:
PtexIO.h:62
LevelInfo
Definition:
PtexIO.h:75
LevelInfo::levelheadersize
uint32_t levelheadersize
Definition:
PtexIO.h:77
LevelInfo::LevelInfo
LevelInfo()
Definition:
PtexIO.h:79
LevelInfo::leveldatasize
uint64_t leveldatasize
Definition:
PtexIO.h:76
LevelInfo::nfaces
uint32_t nfaces
Definition:
PtexIO.h:78
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