v4games
/
assimp
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

glTF: Try to remove duplicate code.

pull/2649/head
kimkulling 2019-09-11 17:00:39 +02:00
parent 28d0300dbe
commit 7ff7a5d64e
12 changed files with 479 additions and 547 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
code/CMakeLists.txt
View File

@ -766,6 +766,8 @@ ADD_ASSIMP_EXPORTER( X3D
)
ADD_ASSIMP_IMPORTER( GLTF
glTF/glTFCommon.h
glTF/glTFCommon.cpp
glTF/glTFAsset.h
glTF/glTFAsset.inl
glTF/glTFAssetWriter.h

2
code/Common/BaseImporter.cpp
View File

@ -85,7 +85,7 @@ void BaseImporter::UpdateImporterScale( Importer* pImp )
double activeScale = importerScale * fileScale;
// Set active scaling
pImp->SetPropertyFloat( AI_CONFIG_APP_SCALE_KEY, activeScale);
pImp->SetPropertyFloat( AI_CONFIG_APP_SCALE_KEY, static_cast<float>( activeScale) );
ASSIMP_LOG_DEBUG_F("UpdateImporterScale scale set: %f", activeScale );
}

69
code/glTF/glTFAsset.h
View File

@ -92,38 +92,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# endif
#endif
#include "glTF/glTFCommon.h"
namespace glTF
{
#ifdef ASSIMP_API
using Assimp::IOStream;
using Assimp::IOSystem;
using std::shared_ptr;
#else
using std::shared_ptr;
typedef std::runtime_error DeadlyImportError;
typedef std::runtime_error DeadlyExportError;
enum aiOrigin { aiOrigin_SET = 0, aiOrigin_CUR = 1, aiOrigin_END = 2 };
class IOSystem;
class IOStream
{
FILE* f;
public:
IOStream(FILE* file) : f(file) {}
~IOStream() { fclose(f); f = 0; }
size_t Read(void* b, size_t sz, size_t n) { return fread(b, sz, n, f); }
size_t Write(const void* b, size_t sz, size_t n) { return fwrite(b, sz, n, f); }
int Seek(size_t off, aiOrigin orig) { return fseek(f, off, int(orig)); }
size_t Tell() const { return ftell(f); }
size_t FileSize() {
long p = Tell(), len = (Seek(0, aiOrigin_END), Tell());
return size_t((Seek(p, aiOrigin_SET), len));
}
};
#endif
using glTFCommon::shared_ptr;
using glTFCommon::IOSystem;
using glTFCommon::IOStream;
using rapidjson::Value;
using rapidjson::Document;
@ -136,37 +111,9 @@ namespace glTF
struct Light;
struct Skin;
// Vec/matrix types, as raw float arrays
typedef float (vec3)[3];
typedef float (vec4)[4];
typedef float (mat4)[16];
namespace Util
{
void EncodeBase64(const uint8_t* in, size_t inLength, std::string& out);
size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out);
inline size_t DecodeBase64(const char* in, uint8_t*& out)
{
return DecodeBase64(in, strlen(in), out);
}
struct DataURI
{
const char* mediaType;
const char* charset;
bool base64;
const char* data;
size_t dataLength;
};
//! Check if a uri is a data URI
inline bool ParseDataURI(const char* uri, size_t uriLen, DataURI& out);
}
using glTFCommon::vec3;
using glTFCommon::vec4;
using glTFCommon::mat4;
//! Magic number for GLB files
#define AI_GLB_MAGIC_NUMBER "glTF"

194
code/glTF/glTFAsset.inl
View File

@ -4,7 +4,6 @@ Open Asset Import Library (assimp)
Copyright (c) 2006-2019, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
@ -52,6 +51,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endif
using namespace Assimp;
using namespace glTFCommon;
namespace glTF {
@ -301,7 +301,7 @@ inline void Buffer::Read(Value& obj, Asset& r)
const char* uri = it->GetString();
Util::DataURI dataURI;
glTFCommon::Util::DataURI dataURI;
if (ParseDataURI(uri, it->GetStringLength(), dataURI)) {
if (dataURI.base64) {
uint8_t* data = 0;
@ -654,12 +654,12 @@ inline void Image::Read(Value& obj, Asset& r)
if (Value* uri = FindString(obj, "uri")) {
const char* uristr = uri->GetString();
Util::DataURI dataURI;
glTFCommon::Util::DataURI dataURI;
if (ParseDataURI(uristr, uri->GetStringLength(), dataURI)) {
mimeType = dataURI.mediaType;
if (dataURI.base64) {
uint8_t *ptr = nullptr;
mDataLength = Util::DecodeBase64(dataURI.data, dataURI.dataLength, ptr);
mDataLength = glTFCommon::Util::DecodeBase64(dataURI.data, dataURI.dataLength, ptr);
mData.reset(ptr);
}
}
@ -1474,190 +1474,4 @@ inline std::string Asset::FindUniqueID(const std::string& str, const char* suffi
return id;
}
namespace Util {
inline
bool ParseDataURI(const char* const_uri, size_t uriLen, DataURI& out) {
if ( NULL == const_uri ) {
return false;
}
if (const_uri[0] != 0x10) { // we already parsed this uri?
if (strncmp(const_uri, "data:", 5) != 0) // not a data uri?
return false;
}
// set defaults
out.mediaType = "text/plain";
out.charset = "US-ASCII";
out.base64 = false;
char* uri = const_cast<char*>(const_uri);
if (uri[0] != 0x10) {
uri[0] = 0x10;
uri[1] = uri[2] = uri[3] = uri[4] = 0;
size_t i = 5, j;
if (uri[i] != ';' && uri[i] != ',') { // has media type?
uri[1] = char(i);
for (; uri[i] != ';' && uri[i] != ',' && i < uriLen; ++i) {
// nothing to do!
}
}
while (uri[i] == ';' && i < uriLen) {
uri[i++] = '\0';
for (j = i; uri[i] != ';' && uri[i] != ',' && i < uriLen; ++i) {
// nothing to do!
}
if ( strncmp( uri + j, "charset=", 8 ) == 0 ) {
uri[2] = char(j + 8);
} else if ( strncmp( uri + j, "base64", 6 ) == 0 ) {
uri[3] = char(j);
}
}
if (i < uriLen) {
uri[i++] = '\0';
uri[4] = char(i);
} else {
uri[1] = uri[2] = uri[3] = 0;
uri[4] = 5;
}
}
if ( uri[ 1 ] != 0 ) {
out.mediaType = uri + uri[ 1 ];
}
if ( uri[ 2 ] != 0 ) {
out.charset = uri + uri[ 2 ];
}
if ( uri[ 3 ] != 0 ) {
out.base64 = true;
}
out.data = uri + uri[4];
out.dataLength = (uri + uriLen) - out.data;
return true;
}
template<bool B>
struct DATA
{
static const uint8_t tableDecodeBase64[128];
};
template<bool B>
const uint8_t DATA<B>::tableDecodeBase64[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 64, 0, 0,
0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0,
0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0
};
inline char EncodeCharBase64(uint8_t b)
{
return "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="[size_t(b)];
}
inline uint8_t DecodeCharBase64(char c)
{
return DATA<true>::tableDecodeBase64[size_t(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;
if (c == '+') return 62;
if (c == '/') return 63;
return 64; // '-' */
}
inline size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out)
{
ai_assert(inLength % 4 == 0);
if (inLength < 4) {
out = 0;
return 0;
}
int nEquals = int(in[inLength - 1] == '=') +
int(in[inLength - 2] == '=');
size_t outLength = (inLength * 3) / 4 - nEquals;
out = new uint8_t[outLength];
memset(out, 0, outLength);
size_t i, j = 0;
for (i = 0; i + 4 < 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);
}
{
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));
if (b2 < 64) out[j++] = (uint8_t)((b1 << 4) | (b2 >> 2));
if (b3 < 64) out[j++] = (uint8_t)((b2 << 6) | b3);
}
return outLength;
}
inline void EncodeBase64(
const uint8_t* in, size_t inLength,
std::string& out)
{
size_t outLength = ((inLength + 2) / 3) * 4;
size_t j = out.size();
out.resize(j + outLength);
for (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++] = '=';
}
}
}
}
} // ns glTF

2
code/glTF/glTFAssetWriter.inl
View File

@ -215,7 +215,7 @@ namespace glTF {
else if (img.HasData()) {
uri = "data:" + (img.mimeType.empty() ? "application/octet-stream" : img.mimeType);
uri += ";base64,";
Util::EncodeBase64(img.GetData(), img.GetDataLength(), uri);
glTFCommon::Util::EncodeBase64(img.GetData(), img.GetDataLength(), uri);
}
else {
uri = img.uri;

193
code/glTF/glTFCommon.cpp 100644
View File

@ -0,0 +1,193 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, 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 "glTF/glTFCommon.h"
namespace glTFCommon {
using namespace glTFCommon::Util;
namespace Util {
size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out) {
ai_assert(inLength % 4 == 0);
if (inLength < 4) {
out = 0;
return 0;
}
int nEquals = int(in[inLength - 1] == '=') +
int(in[inLength - 2] == '=');
size_t outLength = (inLength * 3) / 4 - nEquals;
out = new uint8_t[outLength];
memset(out, 0, outLength);
size_t i, j = 0;
for (i = 0; i + 4 < 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);
}
{
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));
if (b2 < 64) out[j++] = (uint8_t)((b1 << 4) | (b2 >> 2));
if (b3 < 64) out[j++] = (uint8_t)((b2 << 6) | b3);
}
return outLength;
}
void EncodeBase64(const uint8_t* in, size_t inLength, std::string& out) {
size_t outLength = ((inLength + 2) / 3) * 4;
size_t j = out.size();
out.resize(j + outLength);
for (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++] = '=';
}
}
}
bool ParseDataURI(const char* const_uri, size_t uriLen, DataURI& out) {
if (nullptr == const_uri) {
return false;
}
if (const_uri[0] != 0x10) { // we already parsed this uri?
if (strncmp(const_uri, "data:", 5) != 0) // not a data uri?
return false;
}
// set defaults
out.mediaType = "text/plain";
out.charset = "US-ASCII";
out.base64 = false;
char* uri = const_cast<char*>(const_uri);
if (uri[0] != 0x10) {
uri[0] = 0x10;
uri[1] = uri[2] = uri[3] = uri[4] = 0;
size_t i = 5, j;
if (uri[i] != ';' && uri[i] != ',') { // has media type?
uri[1] = char(i);
for (; uri[i] != ';' && uri[i] != ',' && i < uriLen; ++i) {
// nothing to do!
}
}
while (uri[i] == ';' && i < uriLen) {
uri[i++] = '\0';
for (j = i; uri[i] != ';' && uri[i] != ',' && i < uriLen; ++i) {
// nothing to do!
}
if (strncmp(uri + j, "charset=", 8) == 0) {
uri[2] = char(j + 8);
}
else if (strncmp(uri + j, "base64", 6) == 0) {
uri[3] = char(j);
}
}
if (i < uriLen) {
uri[i++] = '\0';
uri[4] = char(i);
}
else {
uri[1] = uri[2] = uri[3] = 0;
uri[4] = 5;
}
}
if (uri[1] != 0) {
out.mediaType = uri + uri[1];
}
if (uri[2] != 0) {
out.charset = uri + uri[2];
}
if (uri[3] != 0) {
out.base64 = true;
}
out.data = uri + uri[4];
out.dataLength = (uri + uriLen) - out.data;
return true;
}
}
}

241
code/glTF/glTFCommon.h 100644
View File

@ -0,0 +1,241 @@
/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, 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_GLFTCOMMON_H_INC
#define AI_GLFTCOMMON_H_INC
#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
#include <assimp/Exceptional.h>
#include <map>
#include <string>
#include <list>
#include <vector>
#include <algorithm>
#include <stdexcept>
#define RAPIDJSON_HAS_STDSTRING 1
#include <rapidjson/rapidjson.h>
#include <rapidjson/document.h>
#include <rapidjson/error/en.h>
#ifdef ASSIMP_API
# include <memory>
# include <assimp/DefaultIOSystem.h>
# include <assimp/ByteSwapper.h>
#else
# include <memory>
# define AI_SWAP4(p)
# define ai_assert
#endif
#if _MSC_VER > 1500 || (defined __GNUC___)
# define ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
# else
# define gltf_unordered_map map
#endif
#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
# include <unordered_map>
# if _MSC_VER > 1600
# define gltf_unordered_map unordered_map
# else
# define gltf_unordered_map tr1::unordered_map
# endif
#endif
namespace glTFCommon {
#ifdef ASSIMP_API
using Assimp::IOStream;
using Assimp::IOSystem;
using std::shared_ptr;
#else
using std::shared_ptr;
typedef std::runtime_error DeadlyImportError;
typedef std::runtime_error DeadlyExportError;
enum aiOrigin {
aiOrigin_SET = 0,
aiOrigin_CUR = 1,
aiOrigin_END = 2
};
class IOSystem;
class IOStream {
public:
IOStream(FILE* file) : f(file) {}
~IOStream() { fclose(f); f = 0; }
size_t Read(void* b, size_t sz, size_t n) { return fread(b, sz, n, f); }
size_t Write(const void* b, size_t sz, size_t n) { return fwrite(b, sz, n, f); }
int Seek(size_t off, aiOrigin orig) { return fseek(f, off, int(orig)); }
size_t Tell() const { return ftell(f); }
size_t FileSize() {
long p = Tell(), len = (Seek(0, aiOrigin_END), Tell());
return size_t((Seek(p, aiOrigin_SET), len));
}
private:
FILE* f;
};
#endif
// Vec/matrix types, as raw float arrays
typedef float(vec3)[3];
typedef float(vec4)[4];
typedef float(mat4)[16];
static void CopyValue(const glTFCommon::vec3& v, aiColor4D& out) {
out.r = v[0];
out.g = v[1];
out.b = v[2];
out.a = 1.0;
}
static void CopyValue(const glTFCommon::vec4& v, aiColor4D& out) {
out.r = v[0];
out.g = v[1];
out.b = v[2];
out.a = v[3];
}
static void CopyValue(const glTFCommon::vec4& v, aiColor3D& out) {
out.r = v[0];
out.g = v[1];
out.b = v[2];
}
static void CopyValue(const glTFCommon::vec3& v, aiColor3D& out) {
out.r = v[0];
out.g = v[1];
out.b = v[2];
}
static void CopyValue(const glTFCommon::vec3& v, aiVector3D& out) {
out.x = v[0];
out.y = v[1];
out.z = v[2];
}
static void CopyValue(const glTFCommon::vec4& v, aiQuaternion& out) {
out.x = v[0];
out.y = v[1];
out.z = v[2];
out.w = v[3];
}
static void CopyValue(const glTFCommon::mat4& v, aiMatrix4x4& o) {
o.a1 = v[0]; o.b1 = v[1]; o.c1 = v[2]; o.d1 = v[3];
o.a2 = v[4]; o.b2 = v[5]; o.c2 = v[6]; o.d2 = v[7];
o.a3 = v[8]; o.b3 = v[9]; o.c3 = v[10]; o.d3 = v[11];
o.a4 = v[12]; o.b4 = v[13]; o.c4 = v[14]; o.d4 = v[15];
}
namespace Util {
void EncodeBase64(const uint8_t* in, size_t inLength, std::string& out);
size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out);
inline
size_t DecodeBase64(const char* in, uint8_t*& out) {
return DecodeBase64(in, strlen(in), out);
}
struct DataURI {
const char* mediaType;
const char* charset;
bool base64;
const char* data;
size_t dataLength;
};
//! Check if a uri is a data URI
bool ParseDataURI(const char* const_uri, size_t uriLen, DataURI& out);
template<bool B>
struct DATA {
static const uint8_t tableDecodeBase64[128];
};
template<bool B>
const uint8_t DATA<B>::tableDecodeBase64[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 64, 0, 0,
0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0,
0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0
};
inline
char EncodeCharBase64(uint8_t b) {
return "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="[size_t(b)];
}
inline
uint8_t DecodeCharBase64(char c) {
return DATA<true>::tableDecodeBase64[size_t(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;
if (c == '+') return 62;
if (c == '/') return 63;
return 64; // '-' */
}
size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out);
void EncodeBase64(const uint8_t* in, size_t inLength, std::string& out);
}
}
#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
#endif // AI_GLFTCOMMON_H_INC

33
code/glTF/glTFImporter.cpp
View File

@ -115,39 +115,6 @@ bool glTFImporter::CanRead(const std::string& pFile, IOSystem* pIOHandler, bool
return false;
}
static void CopyValue(const glTF::vec4& v, aiColor4D& out) {
out.r = v[0];
out.g = v[1];
out.b = v[2];
out.a = v[3];
}
static void CopyValue(const glTF::vec4& v, aiColor3D& out) {
out.r = v[0];
out.g = v[1];
out.b = v[2];
}
static void CopyValue(const glTF::vec3& v, aiVector3D& out) {
out.x = v[0];
out.y = v[1];
out.z = v[2];
}
static void CopyValue(const glTF::vec4& v, aiQuaternion& out) {
out.x = v[0];
out.y = v[1];
out.z = v[2];
out.w = v[3];
}
static void CopyValue(const glTF::mat4& v, aiMatrix4x4& o) {
o.a1 = v[ 0]; o.b1 = v[ 1]; o.c1 = v[ 2]; o.d1 = v[ 3];
o.a2 = v[ 4]; o.b2 = v[ 5]; o.c2 = v[ 6]; o.d2 = v[ 7];
o.a3 = v[ 8]; o.b3 = v[ 9]; o.c3 = v[10]; o.d3 = v[11];
o.a4 = v[12]; o.b4 = v[13]; o.c4 = v[14]; o.d4 = v[15];
}
inline
void SetMaterialColorProperty(std::vector<int>& embeddedTexIdxs, Asset& /*r*/, glTF::TexProperty prop, aiMaterial* mat,
aiTextureType texType, const char* pKey, unsigned int type, unsigned int idx) {

69
code/glTF2/glTF2Asset.h
View File

@ -95,38 +95,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <assimp/StringUtils.h>
#include "glTF/glTFCommon.h"
namespace glTF2
{
#ifdef ASSIMP_API
using Assimp::IOStream;
using Assimp::IOSystem;
using std::shared_ptr;
#else
using std::shared_ptr;
typedef std::runtime_error DeadlyImportError;
typedef std::runtime_error DeadlyExportError;
enum aiOrigin { aiOrigin_SET = 0, aiOrigin_CUR = 1, aiOrigin_END = 2 };
class IOSystem;
class IOStream
{
FILE* f;
public:
IOStream(FILE* file) : f(file) {}
~IOStream() { fclose(f); f = 0; }
size_t Read(void* b, size_t sz, size_t n) { return fread(b, sz, n, f); }
size_t Write(const void* b, size_t sz, size_t n) { return fwrite(b, sz, n, f); }
int Seek(size_t off, aiOrigin orig) { return fseek(f, off, int(orig)); }
size_t Tell() const { return ftell(f); }
size_t FileSize() {
long p = Tell(), len = (Seek(0, aiOrigin_END), Tell());
return size_t((Seek(p, aiOrigin_SET), len));
}
};
#endif
using glTFCommon::shared_ptr;
using glTFCommon::IOSystem;
using glTFCommon::IOStream;
using rapidjson::Value;
using rapidjson::Document;
@ -138,35 +113,9 @@ namespace glTF2
struct Texture;
struct Skin;
// Vec/matrix types, as raw float arrays
typedef float (vec3)[3];
typedef float (vec4)[4];
typedef float (mat4)[16];
namespace Util
{
void EncodeBase64(const uint8_t* in, size_t inLength, std::string& out);
size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out);
inline size_t DecodeBase64(const char* in, uint8_t*& out)
{
return DecodeBase64(in, strlen(in), out);
}
struct DataURI
{
const char* mediaType;
const char* charset;
bool base64;
const char* data;
size_t dataLength;
};
//! Check if a uri is a data URI
inline bool ParseDataURI(const char* uri, size_t uriLen, DataURI& out);
}
using glTFCommon::vec3;
using glTFCommon::vec4;
using glTFCommon::mat4;
//! Magic number for GLB files
#define AI_GLB_MAGIC_NUMBER "glTF"
@ -552,7 +501,7 @@ namespace glTF2
/// but in real life you'll get:
/// "accessor_0" : { byteOffset: 0, byteLength: 4}, "accessor_1" : { byteOffset: 2, byteLength: 4}
/// Yes, accessor of next mesh has offset and length which mean: current mesh data is decoded, all other data is encoded.
/// And when before you start to read data of current mesh (with encoded data ofcourse) you must decode region of "bufferView", after read finished
/// And when before you start to read data of current mesh (with encoded data of course) you must decode region of "bufferView", after read finished
/// delete encoding mark. And after that you can repeat process: decode data of mesh, read, delete decoded data.
///
/// Remark. Encoding all data at once is good in world with computers which do not has RAM limitation. So, you must use step by step encoding in

196
code/glTF2/glTF2Asset.inl
View File

@ -282,9 +282,7 @@ Ref<T> LazyDict<T>::Retrieve(unsigned int i)
template<class T>
Ref<T> LazyDict<T>::Get(unsigned int i)
{
return Ref<T>(mObjs, i);
}
template<class T>
@ -361,11 +359,11 @@ inline void Buffer::Read(Value& obj, Asset& r)
const char* uri = it->GetString();
Util::DataURI dataURI;
glTFCommon::Util::DataURI dataURI;
if (ParseDataURI(uri, it->GetStringLength(), dataURI)) {
if (dataURI.base64) {
uint8_t* data = 0;
this->byteLength = Util::DecodeBase64(dataURI.data, dataURI.dataLength, data);
this->byteLength = glTFCommon::Util::DecodeBase64(dataURI.data, dataURI.dataLength, data);
this->mData.reset(data, std::default_delete<uint8_t[]>());
if (statedLength > 0 && this->byteLength != statedLength) {
@ -717,12 +715,12 @@ inline void Image::Read(Value& obj, Asset& r)
if (Value* uri = FindString(obj, "uri")) {
const char* uristr = uri->GetString();
Util::DataURI dataURI;
glTFCommon::Util::DataURI dataURI;
if (ParseDataURI(uristr, uri->GetStringLength(), dataURI)) {
mimeType = dataURI.mediaType;
if (dataURI.base64) {
uint8_t *ptr = nullptr;
mDataLength = Util::DecodeBase64(dataURI.data, dataURI.dataLength, ptr);
mDataLength = glTFCommon::Util::DecodeBase64(dataURI.data, dataURI.dataLength, ptr);
mData.reset(ptr);
}
}
@ -1515,190 +1513,4 @@ inline std::string Asset::FindUniqueID(const std::string& str, const char* suffi
return id;
}
namespace Util {
inline
bool ParseDataURI(const char* const_uri, size_t uriLen, DataURI& out) {
if ( NULL == const_uri ) {
return false;
}
if (const_uri[0] != 0x10) { // we already parsed this uri?
if (strncmp(const_uri, "data:", 5) != 0) // not a data uri?
return false;
}
// set defaults
out.mediaType = "text/plain";
out.charset = "US-ASCII";
out.base64 = false;
char* uri = const_cast<char*>(const_uri);
if (uri[0] != 0x10) {
uri[0] = 0x10;
uri[1] = uri[2] = uri[3] = uri[4] = 0;
size_t i = 5, j;
if (uri[i] != ';' && uri[i] != ',') { // has media type?
uri[1] = char(i);
for (; uri[i] != ';' && uri[i] != ',' && i < uriLen; ++i) {
// nothing to do!
}
}
while (uri[i] == ';' && i < uriLen) {
uri[i++] = '\0';
for (j = i; uri[i] != ';' && uri[i] != ',' && i < uriLen; ++i) {
// nothing to do!
}
if ( strncmp( uri + j, "charset=", 8 ) == 0 ) {
uri[2] = char(j + 8);
} else if ( strncmp( uri + j, "base64", 6 ) == 0 ) {
uri[3] = char(j);
}
}
if (i < uriLen) {
uri[i++] = '\0';
uri[4] = char(i);
} else {
uri[1] = uri[2] = uri[3] = 0;
uri[4] = 5;
}
}
if ( uri[ 1 ] != 0 ) {
out.mediaType = uri + uri[ 1 ];
}
if ( uri[ 2 ] != 0 ) {
out.charset = uri + uri[ 2 ];
}
if ( uri[ 3 ] != 0 ) {
out.base64 = true;
}
out.data = uri + uri[4];
out.dataLength = (uri + uriLen) - out.data;
return true;
}
template<bool B>
struct DATA
{
static const uint8_t tableDecodeBase64[128];
};
template<bool B>
const uint8_t DATA<B>::tableDecodeBase64[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 64, 0, 0,
0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0,
0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0
};
inline char EncodeCharBase64(uint8_t b)
{
return "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="[size_t(b)];
}
inline uint8_t DecodeCharBase64(char c)
{
return DATA<true>::tableDecodeBase64[size_t(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;
if (c == '+') return 62;
if (c == '/') return 63;
return 64; // '-' */
}
inline size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out)
{
ai_assert(inLength % 4 == 0);
if (inLength < 4) {
out = 0;
return 0;
}
int nEquals = int(in[inLength - 1] == '=') +
int(in[inLength - 2] == '=');
size_t outLength = (inLength * 3) / 4 - nEquals;
out = new uint8_t[outLength];
memset(out, 0, outLength);
size_t i, j = 0;
for (i = 0; i + 4 < 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);
}
{
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));
if (b2 < 64) out[j++] = (uint8_t)((b1 << 4) | (b2 >> 2));
if (b3 < 64) out[j++] = (uint8_t)((b2 << 6) | b3);
}
return outLength;
}
inline void EncodeBase64(
const uint8_t* in, size_t inLength,
std::string& out)
{
size_t outLength = ((inLength + 2) / 3) * 4;
size_t j = out.size();
out.resize(j + outLength);
for (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++] = '=';
}
}
}
}
} // ns glTF

2
code/glTF2/glTF2AssetWriter.inl
View File

@ -218,7 +218,7 @@ namespace glTF2 {
if (img.HasData()) {
uri = "data:" + (img.mimeType.empty() ? "application/octet-stream" : img.mimeType);
uri += ";base64,";
Util::EncodeBase64(img.GetData(), img.GetDataLength(), uri);
glTFCommon::Util::EncodeBase64(img.GetData(), img.GetDataLength(), uri);
}
else {
uri = img.uri;

23
code/glTF2/glTF2Importer.cpp
View File

@ -64,6 +64,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
using namespace Assimp;
using namespace glTF2;
using namespace glTFCommon;
namespace {
// generate bi-tangents from normals and tangents according to spec
@ -140,22 +141,23 @@ static aiTextureMapMode ConvertWrappingMode(SamplerWrap gltfWrapMode)
}
}
static void CopyValue(const glTF2::vec3& v, aiColor3D& out)
/*static void CopyValue(const glTF2::vec3& v, aiColor3D& out)
{
out.r = v[0]; out.g = v[1]; out.b = v[2];
}
static void CopyValue(const glTF2::vec4& v, aiColor4D& out)
{
out.r = v[0]; out.g = v[1]; out.b = v[2]; out.a = v[3];
}
}*/
/*static void CopyValue(const glTF2::vec4& v, aiColor3D& out)
{
out.r = v[0]; out.g = v[1]; out.b = v[2];
}*/
static void CopyValue(const glTF2::vec3& v, aiColor4D& out)
/*static void CopyValue(const glTF2::vec3& v, aiColor4D& out)
{
out.r = v[0]; out.g = v[1]; out.b = v[2]; out.a = 1.0;
}
@ -168,15 +170,15 @@ static void CopyValue(const glTF2::vec3& v, aiVector3D& out)
static void CopyValue(const glTF2::vec4& v, aiQuaternion& out)
{
out.x = v[0]; out.y = v[1]; out.z = v[2]; out.w = v[3];
}
}*/
static void CopyValue(const glTF2::mat4& v, aiMatrix4x4& o)
/*static void CopyValue(const glTF2::mat4& v, aiMatrix4x4& o)
{
o.a1 = v[ 0]; o.b1 = v[ 1]; o.c1 = v[ 2]; o.d1 = v[ 3];
o.a2 = v[ 4]; o.b2 = v[ 5]; o.c2 = v[ 6]; o.d2 = v[ 7];
o.a3 = v[ 8]; o.b3 = v[ 9]; o.c3 = v[10]; o.d3 = v[11];
o.a4 = v[12]; o.b4 = v[13]; o.c4 = v[14]; o.d4 = v[15];
}
}*/
inline void SetMaterialColorProperty(Asset& /*r*/, vec4& prop, aiMaterial* mat, const char* pKey, unsigned int type, unsigned int idx)
{
@ -188,7 +190,7 @@ inline void SetMaterialColorProperty(Asset& /*r*/, vec4& prop, aiMaterial* mat,
inline void SetMaterialColorProperty(Asset& /*r*/, vec3& prop, aiMaterial* mat, const char* pKey, unsigned int type, unsigned int idx)
{
aiColor4D col;
CopyValue(prop, col);
glTFCommon::CopyValue(prop, col);
mat->AddProperty(&col, 1, pKey, type, idx);
}
@ -987,7 +989,12 @@ void glTF2Importer::ImportNodes(glTF2::Asset& r)
}
struct AnimationSamplers {
AnimationSamplers() : translation(nullptr), rotation(nullptr), scale(nullptr) {}
AnimationSamplers()
: translation(nullptr)
, rotation(nullptr)
, scale(nullptr) {
// empty
}
Animation::Sampler* translation;
Animation::Sampler* rotation;