assimp/code/AssetLib/MD5/MD5Parser.cpp

477 lines
20 KiB
C++

/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2022, 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
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* Redistributions of source code must retain the above
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following disclaimer.
* Redistributions in binary form must reproduce the above
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* 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
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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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
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
/** @file MD5Parser.cpp
* @brief Implementation of the MD5 parser class
*/
// internal headers
#include "AssetLib/MD5/MD5Loader.h"
#include "Material/MaterialSystem.h"
#include <assimp/ParsingUtils.h>
#include <assimp/StringComparison.h>
#include <assimp/fast_atof.h>
#include <assimp/mesh.h>
#include <assimp/DefaultLogger.hpp>
using namespace Assimp;
using namespace Assimp::MD5;
// ------------------------------------------------------------------------------------------------
// Parse the segment structure for an MD5 file
MD5Parser::MD5Parser(char *_buffer, unsigned int _fileSize) : buffer(_buffer), bufferEnd(nullptr), fileSize(_fileSize), lineNumber(0) {
ai_assert(nullptr != _buffer);
ai_assert(0 != _fileSize);
bufferEnd = buffer + fileSize;
ASSIMP_LOG_DEBUG("MD5Parser begin");
// parse the file header
ParseHeader();
// and read all sections until we're finished
bool running = true;
while (running) {
mSections.emplace_back();
Section &sec = mSections.back();
if (!ParseSection(sec)) {
break;
}
}
if (!DefaultLogger::isNullLogger()) {
char szBuffer[128]; // should be sufficiently large
::ai_snprintf(szBuffer, 128, "MD5Parser end. Parsed %i sections", (int)mSections.size());
ASSIMP_LOG_DEBUG(szBuffer);
}
}
// ------------------------------------------------------------------------------------------------
// Report error to the log stream
/*static*/ AI_WONT_RETURN void MD5Parser::ReportError(const char *error, unsigned int line) {
char szBuffer[1024];
::ai_snprintf(szBuffer, 1024, "[MD5] Line %u: %s", line, error);
throw DeadlyImportError(szBuffer);
}
// ------------------------------------------------------------------------------------------------
// Report warning to the log stream
/*static*/ void MD5Parser::ReportWarning(const char *warn, unsigned int line) {
char szBuffer[1024];
::snprintf(szBuffer, sizeof(szBuffer), "[MD5] Line %u: %s", line, warn);
ASSIMP_LOG_WARN(szBuffer);
}
// ------------------------------------------------------------------------------------------------
// Parse and validate the MD5 header
void MD5Parser::ParseHeader() {
// parse and validate the file version
SkipSpaces();
if (!TokenMatch(buffer, "MD5Version", 10)) {
ReportError("Invalid MD5 file: MD5Version tag has not been found");
}
SkipSpaces();
unsigned int iVer = ::strtoul10(buffer, (const char **)&buffer);
if (10 != iVer) {
ReportError("MD5 version tag is unknown (10 is expected)");
}
SkipLine();
if (buffer == bufferEnd) {
return;
}
// print the command line options to the console
// FIX: can break the log length limit, so we need to be careful
char *sz = buffer;
while (!IsLineEnd(*buffer++))
;
ASSIMP_LOG_INFO(std::string(sz, std::min((uintptr_t)MAX_LOG_MESSAGE_LENGTH, (uintptr_t)(buffer - sz))));
SkipSpacesAndLineEnd();
}
// ------------------------------------------------------------------------------------------------
// Recursive MD5 parsing function
bool MD5Parser::ParseSection(Section &out) {
// store the current line number for use in error messages
out.iLineNumber = lineNumber;
// first parse the name of the section
char *sz = buffer;
while (!IsSpaceOrNewLine(*buffer)) {
++buffer;
}
out.mName = std::string(sz, (uintptr_t)(buffer - sz));
SkipSpaces();
bool running = true;
while (running) {
if ('{' == *buffer) {
// it is a normal section so read all lines
++buffer;
bool run = true;
while (run) {
if (!SkipSpacesAndLineEnd()) {
return false; // seems this was the last section
}
if ('}' == *buffer) {
++buffer;
break;
}
out.mElements.emplace_back();
Element &elem = out.mElements.back();
elem.iLineNumber = lineNumber;
elem.szStart = buffer;
// terminate the line with zero
while (!IsLineEnd(*buffer))
++buffer;
if (*buffer) {
++lineNumber;
*buffer++ = '\0';
}
}
break;
} else if (!IsSpaceOrNewLine(*buffer)) {
// it is an element at global scope. Parse its value and go on
sz = buffer;
while (!IsSpaceOrNewLine(*buffer++))
;
out.mGlobalValue = std::string(sz, (uintptr_t)(buffer - sz));
continue;
}
break;
}
return SkipSpacesAndLineEnd();
}
// ------------------------------------------------------------------------------------------------
// Some dirty macros just because they're so funny and easy to debug
// skip all spaces ... handle EOL correctly
#define AI_MD5_SKIP_SPACES() \
if (!SkipSpaces(&sz)) \
MD5Parser::ReportWarning("Unexpected end of line", elem.iLineNumber);
// read a triple float in brackets: (1.0 1.0 1.0)
#define AI_MD5_READ_TRIPLE(vec) \
AI_MD5_SKIP_SPACES(); \
if ('(' != *sz++) \
MD5Parser::ReportWarning("Unexpected token: ( was expected", elem.iLineNumber); \
AI_MD5_SKIP_SPACES(); \
sz = fast_atoreal_move<float>(sz, (float &)vec.x); \
AI_MD5_SKIP_SPACES(); \
sz = fast_atoreal_move<float>(sz, (float &)vec.y); \
AI_MD5_SKIP_SPACES(); \
sz = fast_atoreal_move<float>(sz, (float &)vec.z); \
AI_MD5_SKIP_SPACES(); \
if (')' != *sz++) \
MD5Parser::ReportWarning("Unexpected token: ) was expected", elem.iLineNumber);
// parse a string, enclosed in quotation marks or not
#define AI_MD5_PARSE_STRING(out) \
bool bQuota = (*sz == '\"'); \
const char *szStart = sz; \
while (!IsSpaceOrNewLine(*sz)) \
++sz; \
const char *szEnd = sz; \
if (bQuota) { \
szStart++; \
if ('\"' != *(szEnd -= 1)) { \
MD5Parser::ReportWarning("Expected closing quotation marks in string", \
elem.iLineNumber); \
continue; \
} \
} \
out.length = (size_t)(szEnd - szStart); \
::memcpy(out.data, szStart, out.length); \
out.data[out.length] = '\0';
// parse a string, enclosed in quotation marks
#define AI_MD5_PARSE_STRING_IN_QUOTATION(out) \
out.length = 0; \
while ('\"' != *sz && '\0' != *sz) \
++sz; \
if ('\0' != *sz) { \
const char *szStart = ++sz; \
while ('\"' != *sz && '\0' != *sz) \
++sz; \
if ('\0' != *sz) { \
const char *szEnd = (sz++); \
out.length = (ai_uint32)(szEnd - szStart); \
::memcpy(out.data, szStart, out.length); \
} \
} \
out.data[out.length] = '\0';
// ------------------------------------------------------------------------------------------------
// .MD5MESH parsing function
MD5MeshParser::MD5MeshParser(SectionList &mSections) {
ASSIMP_LOG_DEBUG("MD5MeshParser begin");
// now parse all sections
for (SectionList::const_iterator iter = mSections.begin(), iterEnd = mSections.end(); iter != iterEnd; ++iter) {
if ((*iter).mName == "numMeshes") {
mMeshes.reserve(::strtoul10((*iter).mGlobalValue.c_str()));
} else if ((*iter).mName == "numJoints") {
mJoints.reserve(::strtoul10((*iter).mGlobalValue.c_str()));
} else if ((*iter).mName == "joints") {
// "origin" -1 ( -0.000000 0.016430 -0.006044 ) ( 0.707107 0.000000 0.707107 )
for (const auto &elem : (*iter).mElements) {
mJoints.emplace_back();
BoneDesc &desc = mJoints.back();
const char *sz = elem.szStart;
AI_MD5_PARSE_STRING_IN_QUOTATION(desc.mName);
AI_MD5_SKIP_SPACES();
// negative values, at least -1, is allowed here
desc.mParentIndex = (int)strtol10(sz, &sz);
AI_MD5_READ_TRIPLE(desc.mPositionXYZ);
AI_MD5_READ_TRIPLE(desc.mRotationQuat); // normalized quaternion, so w is not there
}
} else if ((*iter).mName == "mesh") {
mMeshes.emplace_back();
MeshDesc &desc = mMeshes.back();
for (const auto &elem : (*iter).mElements) {
const char *sz = elem.szStart;
// shader attribute
if (TokenMatch(sz, "shader", 6)) {
AI_MD5_SKIP_SPACES();
AI_MD5_PARSE_STRING_IN_QUOTATION(desc.mShader);
}
// numverts attribute
else if (TokenMatch(sz, "numverts", 8)) {
AI_MD5_SKIP_SPACES();
desc.mVertices.resize(strtoul10(sz));
}
// numtris attribute
else if (TokenMatch(sz, "numtris", 7)) {
AI_MD5_SKIP_SPACES();
desc.mFaces.resize(strtoul10(sz));
}
// numweights attribute
else if (TokenMatch(sz, "numweights", 10)) {
AI_MD5_SKIP_SPACES();
desc.mWeights.resize(strtoul10(sz));
}
// vert attribute
// "vert 0 ( 0.394531 0.513672 ) 0 1"
else if (TokenMatch(sz, "vert", 4)) {
AI_MD5_SKIP_SPACES();
const unsigned int idx = ::strtoul10(sz, &sz);
AI_MD5_SKIP_SPACES();
if (idx >= desc.mVertices.size())
desc.mVertices.resize(idx + 1);
VertexDesc &vert = desc.mVertices[idx];
if ('(' != *sz++)
MD5Parser::ReportWarning("Unexpected token: ( was expected", elem.iLineNumber);
AI_MD5_SKIP_SPACES();
sz = fast_atoreal_move<float>(sz, (float &)vert.mUV.x);
AI_MD5_SKIP_SPACES();
sz = fast_atoreal_move<float>(sz, (float &)vert.mUV.y);
AI_MD5_SKIP_SPACES();
if (')' != *sz++)
MD5Parser::ReportWarning("Unexpected token: ) was expected", elem.iLineNumber);
AI_MD5_SKIP_SPACES();
vert.mFirstWeight = ::strtoul10(sz, &sz);
AI_MD5_SKIP_SPACES();
vert.mNumWeights = ::strtoul10(sz, &sz);
}
// tri attribute
// "tri 0 15 13 12"
else if (TokenMatch(sz, "tri", 3)) {
AI_MD5_SKIP_SPACES();
const unsigned int idx = strtoul10(sz, &sz);
if (idx >= desc.mFaces.size())
desc.mFaces.resize(idx + 1);
aiFace &face = desc.mFaces[idx];
face.mIndices = new unsigned int[face.mNumIndices = 3];
for (unsigned int i = 0; i < 3; ++i) {
AI_MD5_SKIP_SPACES();
face.mIndices[i] = strtoul10(sz, &sz);
}
}
// weight attribute
// "weight 362 5 0.500000 ( -3.553583 11.893474 9.719339 )"
else if (TokenMatch(sz, "weight", 6)) {
AI_MD5_SKIP_SPACES();
const unsigned int idx = strtoul10(sz, &sz);
AI_MD5_SKIP_SPACES();
if (idx >= desc.mWeights.size())
desc.mWeights.resize(idx + 1);
WeightDesc &weight = desc.mWeights[idx];
weight.mBone = strtoul10(sz, &sz);
AI_MD5_SKIP_SPACES();
sz = fast_atoreal_move<float>(sz, weight.mWeight);
AI_MD5_READ_TRIPLE(weight.vOffsetPosition);
}
}
}
}
ASSIMP_LOG_DEBUG("MD5MeshParser end");
}
// ------------------------------------------------------------------------------------------------
// .MD5ANIM parsing function
MD5AnimParser::MD5AnimParser(SectionList &mSections) {
ASSIMP_LOG_DEBUG("MD5AnimParser begin");
fFrameRate = 24.0f;
mNumAnimatedComponents = UINT_MAX;
for (SectionList::const_iterator iter = mSections.begin(), iterEnd = mSections.end(); iter != iterEnd; ++iter) {
if ((*iter).mName == "hierarchy") {
// "sheath" 0 63 6
for (const auto &elem : (*iter).mElements) {
mAnimatedBones.emplace_back();
AnimBoneDesc &desc = mAnimatedBones.back();
const char *sz = elem.szStart;
AI_MD5_PARSE_STRING_IN_QUOTATION(desc.mName);
AI_MD5_SKIP_SPACES();
// parent index - negative values are allowed (at least -1)
desc.mParentIndex = ::strtol10(sz, &sz);
// flags (highest is 2^6-1)
AI_MD5_SKIP_SPACES();
if (63 < (desc.iFlags = ::strtoul10(sz, &sz))) {
MD5Parser::ReportWarning("Invalid flag combination in hierarchy section", elem.iLineNumber);
}
AI_MD5_SKIP_SPACES();
// index of the first animation keyframe component for this joint
desc.iFirstKeyIndex = ::strtoul10(sz, &sz);
}
} else if ((*iter).mName == "baseframe") {
// ( -0.000000 0.016430 -0.006044 ) ( 0.707107 0.000242 0.707107 )
for (const auto &elem : (*iter).mElements) {
const char *sz = elem.szStart;
mBaseFrames.emplace_back();
BaseFrameDesc &desc = mBaseFrames.back();
AI_MD5_READ_TRIPLE(desc.vPositionXYZ);
AI_MD5_READ_TRIPLE(desc.vRotationQuat);
}
} else if ((*iter).mName == "frame") {
if (!(*iter).mGlobalValue.length()) {
MD5Parser::ReportWarning("A frame section must have a frame index", (*iter).iLineNumber);
continue;
}
mFrames.emplace_back();
FrameDesc &desc = mFrames.back();
desc.iIndex = strtoul10((*iter).mGlobalValue.c_str());
// we do already know how much storage we will presumably need
if (UINT_MAX != mNumAnimatedComponents) {
desc.mValues.reserve(mNumAnimatedComponents);
}
// now read all elements (continuous list of floats)
for (const auto &elem : (*iter).mElements) {
const char *sz = elem.szStart;
while (SkipSpacesAndLineEnd(&sz)) {
float f;
sz = fast_atoreal_move<float>(sz, f);
desc.mValues.push_back(f);
}
}
} else if ((*iter).mName == "numFrames") {
mFrames.reserve(strtoul10((*iter).mGlobalValue.c_str()));
} else if ((*iter).mName == "numJoints") {
const unsigned int num = strtoul10((*iter).mGlobalValue.c_str());
mAnimatedBones.reserve(num);
// try to guess the number of animated components if that element is not given
if (UINT_MAX == mNumAnimatedComponents) {
mNumAnimatedComponents = num * 6;
}
} else if ((*iter).mName == "numAnimatedComponents") {
mAnimatedBones.reserve(strtoul10((*iter).mGlobalValue.c_str()));
} else if ((*iter).mName == "frameRate") {
fast_atoreal_move<float>((*iter).mGlobalValue.c_str(), fFrameRate);
}
}
ASSIMP_LOG_DEBUG("MD5AnimParser end");
}
// ------------------------------------------------------------------------------------------------
// .MD5CAMERA parsing function
MD5CameraParser::MD5CameraParser(SectionList &mSections) {
ASSIMP_LOG_DEBUG("MD5CameraParser begin");
fFrameRate = 24.0f;
for (SectionList::const_iterator iter = mSections.begin(), iterEnd = mSections.end(); iter != iterEnd; ++iter) {
if ((*iter).mName == "numFrames") {
frames.reserve(strtoul10((*iter).mGlobalValue.c_str()));
} else if ((*iter).mName == "frameRate") {
fFrameRate = fast_atof((*iter).mGlobalValue.c_str());
} else if ((*iter).mName == "numCuts") {
cuts.reserve(strtoul10((*iter).mGlobalValue.c_str()));
} else if ((*iter).mName == "cuts") {
for (const auto &elem : (*iter).mElements) {
cuts.push_back(strtoul10(elem.szStart) + 1);
}
} else if ((*iter).mName == "camera") {
for (const auto &elem : (*iter).mElements) {
const char *sz = elem.szStart;
frames.emplace_back();
CameraAnimFrameDesc &cur = frames.back();
AI_MD5_READ_TRIPLE(cur.vPositionXYZ);
AI_MD5_READ_TRIPLE(cur.vRotationQuat);
AI_MD5_SKIP_SPACES();
cur.fFOV = fast_atof(sz);
}
}
}
ASSIMP_LOG_DEBUG("MD5CameraParser end");
}