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Experimental support for glTF

pull/697/head
Otger 2015-11-26 02:36:22 +01:00
parent 64a020965f
commit 148a20a703
7 changed files with 1509 additions and 31 deletions
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11
code/CMakeLists.txt
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@ -562,9 +562,12 @@ ADD_ASSIMP_IMPORTER(X
XFileExporter.cpp
)
ADD_ASSIMP_IMPORTER( glFT
glTFImporter.cpp
glTFImporter.h
ADD_ASSIMP_IMPORTER(GLTF
glTFImporter.cpp
glTFImporter.h
glTFUtil.cpp
glTFUtil.h
glTFFileData.h
)
SET( Step_SRCS
@ -654,6 +657,8 @@ SET( picojson_SRCS
)
SOURCE_GROUP( picojson FILES ${picojson_SRCS} )
INCLUDE_DIRECTORIES( "../contrib/rapidjson/include" )
# VC2010 fixes
if(MSVC10)
option( VC10_STDINT_FIX "Fix for VC10 Compiler regarding pstdint.h redefinition errors" OFF )

6
code/ImporterRegistry.cpp
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@ -167,6 +167,9 @@ corresponding preprocessor flag to selectively disable formats.
#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
# include "FBXImporter.h"
#endif
#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
# include "glTFImporter.h"
#endif
#ifndef ASSIMP_BUILD_NO_ASSBIN_IMPORTER
# include "AssbinLoader.h"
#endif
@ -302,6 +305,9 @@ void GetImporterInstanceList(std::vector< BaseImporter* >& out)
#if ( !defined ASSIMP_BUILD_NO_FBX_IMPORTER )
out.push_back( new FBXImporter() );
#endif
#if ( !defined ASSIMP_BUILD_NO_GLTF_IMPORTER )
out.push_back( new glTFImporter() );
#endif
#if ( !defined ASSIMP_BUILD_NO_ASSBIN_IMPORTER )
out.push_back( new AssbinImporter() );
#endif

122
code/glTFFileData.h 100644
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@ -0,0 +1,122 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2015, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
#ifndef AI_GLTFFILEDATA_H_INC
#define AI_GLTFFILEDATA_H_INC
#include <stdint.h>
namespace Assimp {
namespace glTF {
//! Magic number for GLB files
#define AI_GLB_MAGIC_NUMBER "glTF"
#include "./../include/assimp/Compiler/pushpack1.h"
// KHR_binary_glTF (binary .glb file)
// 20-byte header (+ the JSON + a "body" data section)
struct GLB_Header
{
//! Magic number: "glTF"
unsigned char magic[4]; // "glTF"
//! Version number (always 1 as of the last update)
uint32_t version;
//! Total length of the Binary glTF, including header, scene, and body, in bytes
uint32_t length;
//! Length, in bytes, of the glTF scene
uint32_t sceneLength;
//! Specifies the format of the glTF scene (see the SceneFormat enum)
uint32_t sceneFormat;
} PACK_STRUCT;
#include "./../include/assimp/Compiler/poppack1.h"
//! Values for the GLB_Header::sceneFormat field
enum SceneFormat
{
SceneFormat_JSON = 0
};
//! Values for the mesh primitive modes
enum PrimitiveMode
{
PrimitiveMode_POINTS = 0,
PrimitiveMode_LINES = 1,
PrimitiveMode_LINE_LOOP = 2,
PrimitiveMode_LINE_STRIP = 3,
PrimitiveMode_TRIANGLES = 4,
PrimitiveMode_TRIANGLE_STRIP = 5,
PrimitiveMode_TRIANGLE_FAN = 6
};
//! Values for the accessors component type field
enum ComponentType
{
ComponentType_BYTE = 5120,
ComponentType_UNSIGNED_BYTE = 5121,
ComponentType_SHORT = 5122,
ComponentType_UNSIGNED_SHORT = 5123,
ComponentType_FLOAT = 5126
};
//! Will hold the enabled extensions
struct Extensions
{
bool KHR_binary_glTF;
};
} // end namespaces
}
#endif // AI_GLTFFILEDATA_H_INC

1138
code/glTFImporter.cpp
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File diff suppressed because it is too large Load Diff

32
code/glTFImporter.h
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@ -41,10 +41,34 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define AI_GLTFIMPORTER_H_INC
#include "BaseImporter.h"
#include "LogAux.h"
#include "DefaultIOSystem.h"
#if _MSC_VER > 1500 || (defined __GNUC___)
# define ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
# else
# define gltf_unordered_map map
# define gltf_unordered_multimap multimap
#endif
#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
# include <unordered_map>
# if _MSC_VER > 1600
# define gltf_unordered_map unordered_map
# define gltf_unordered_multimap unordered_multimap
# else
# define gltf_unordered_map tr1::unordered_map
# define gltf_unordered_multimap tr1::unordered_multimap
# endif
#endif
namespace Assimp {
class glTFImporter : public BaseImporter {
/**
* Load the glTF format.
* https://github.com/KhronosGroup/glTF/tree/master/specification
*/
class glTFImporter : public BaseImporter, public LogFunctions<glTFImporter> {
public:
glTFImporter();
virtual ~glTFImporter();
@ -55,8 +79,10 @@ protected:
virtual void InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler );
private:
aiScene *m_scene;
std::vector<char> m_buffer;
void ReadBinaryHeader(IOStream& stream);
std::size_t mSceneLength;
std::size_t mBodyOffset, mBodyLength;
};
} // Namespace assimp

164
code/glTFUtil.cpp 100644
View File

@ -0,0 +1,164 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2015, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
#include "glTFUtil.h"
using namespace Assimp;
using namespace Assimp::glTF;
bool Assimp::glTF::IsDataURI(const char* uri)
{
return strncmp(uri, "data:", 5) == 0;
}
static const uint8_t tableDecodeBase64[128] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x3F,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,
0x3C, 0x3D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
0x17, 0x18, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,
0x31, 0x32, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00
};
static inline char EncodeCharBase64(uint8_t b)
{
return "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="[b];
}
static inline uint8_t DecodeCharBase64(char c)
{
return tableDecodeBase64[c]; // TODO faster with lookup table or ifs?
/*if (c >= 'A' && c <= 'Z') return c - 'A';
if (c >= 'a' && c <= 'z') return c - 'a' + 26;
if (c >= '0' && c <= '9') return c - '0' + 52;
return c == '+' ? 62 : 63;*/
}
std::size_t Assimp::glTF::DecodeBase64(
const char* in, uint8_t*& out)
{
return DecodeBase64(in, strlen(in), out);
}
std::size_t Assimp::glTF::DecodeBase64(
const char* in, std::size_t inLength, uint8_t*& out)
{
ai_assert(dataLen % 4 == 0);
if (inLength < 4) {
out = 0;
return 0;
}
int nEquals = int(in[inLength - 1] == '=') +
int(in[inLength - 2] == '=');
std::size_t outLength = (inLength * 3) / 4 - nEquals;
out = new uint8_t[outLength];
memset(out, 0, outLength);
std::size_t j = 0;
for (std::size_t i = 0; i < inLength; i += 4) {
uint8_t b0 = DecodeCharBase64(in[i]);
uint8_t b1 = DecodeCharBase64(in[i + 1]);
uint8_t b2 = DecodeCharBase64(in[i + 2]);
uint8_t b3 = DecodeCharBase64(in[i + 3]);
out[j++] = (uint8_t)((b0 << 2) | (b1 >> 4));
out[j++] = (uint8_t)((b1 << 4) | (b2 >> 2));
out[j++] = (uint8_t)((b2 << 6) | b3);
}
return outLength;
}
void Assimp::glTF::EncodeBase64(
const uint8_t* in, std::size_t inLength,
std::string& out)
{
std::size_t outLength = ((inLength + 2) / 3) * 4;
out.resize(outLength);
std::size_t j = 0;
for (std::size_t i = 0; i < inLength; i += 3) {
uint8_t b = (in[i] & 0xFC) >> 2;
out[j++] = EncodeCharBase64(b);
b = (in[i] & 0x03) << 4;
if (i + 1 < inLength) {
b |= (in[i + 1] & 0xF0) >> 4;
out[j++] = EncodeCharBase64(b);
b = (in[i + 1] & 0x0F) << 2;
if (i + 2 < inLength) {
b |= (in[i + 2] & 0xC0) >> 6;
out[j++] = EncodeCharBase64(b);
b = in[i + 2] & 0x3F;
out[j++] = EncodeCharBase64(b);
}
else {
out[j++] = EncodeCharBase64(b);
out[j++] = '=';
}
}
else {
out[j++] = EncodeCharBase64(b);
out[j++] = '=';
out[j++] = '=';
}
}
}

67
code/glTFUtil.h 100644
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@ -0,0 +1,67 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2015, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
#ifndef AI_GLTFUTIL_H_INC
#define AI_GLTFUTIL_H_INC
//#include "StreamReader.h"
//#include "MemoryIOWrapper.h"
#include "StringComparison.h"
namespace Assimp {
namespace glTF {
//
// Misc
//
std::size_t DecodeBase64(const char* in, uint8_t*& out);
std::size_t DecodeBase64(const char* in, std::size_t inLength, uint8_t*& out);
void EncodeBase64(const uint8_t* in, std::size_t inLength, std::string& out);
bool IsDataURI(const char* uri);
}
}
#endif // AI_GLTFUTIL_H_INC