da1f80c1f2
This reverts commit 78b22393a8.
It caused a regression in FBX import leading to crashes.
Fixes #36908.
1310 lines
37 KiB
C++
1310 lines
37 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2019, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 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 DAMAGE.
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----------------------------------------------------------------------
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*/
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/** @file FBXParser.cpp
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* @brief Implementation of the FBX parser and the rudimentary DOM that we use
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*/
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#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
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#ifdef ASSIMP_BUILD_NO_OWN_ZLIB
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# include <zlib.h>
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#else
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# include "../contrib/zlib/zlib.h"
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#endif
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#include "FBXTokenizer.h"
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#include "FBXParser.h"
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#include "FBXUtil.h"
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#include <assimp/ParsingUtils.h>
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#include <assimp/fast_atof.h>
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#include <assimp/ByteSwapper.h>
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#include <iostream>
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using namespace Assimp;
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using namespace Assimp::FBX;
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namespace {
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// ------------------------------------------------------------------------------------------------
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// signal parse error, this is always unrecoverable. Throws DeadlyImportError.
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AI_WONT_RETURN void ParseError(const std::string& message, const Token& token) AI_WONT_RETURN_SUFFIX;
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AI_WONT_RETURN void ParseError(const std::string& message, const Token& token)
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{
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throw DeadlyImportError(Util::AddTokenText("FBX-Parser",message,&token));
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}
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// ------------------------------------------------------------------------------------------------
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AI_WONT_RETURN void ParseError(const std::string& message, const Element* element = NULL) AI_WONT_RETURN_SUFFIX;
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AI_WONT_RETURN void ParseError(const std::string& message, const Element* element)
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{
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if(element) {
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ParseError(message,element->KeyToken());
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}
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throw DeadlyImportError("FBX-Parser " + message);
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}
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// ------------------------------------------------------------------------------------------------
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void ParseError(const std::string& message, TokenPtr token)
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{
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if(token) {
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ParseError(message, *token);
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}
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ParseError(message);
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}
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// Initially, we did reinterpret_cast, breaking strict aliasing rules.
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// This actually caused trouble on Android, so let's be safe this time.
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// https://github.com/assimp/assimp/issues/24
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template <typename T>
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T SafeParse(const char* data, const char* end) {
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// Actual size validation happens during Tokenization so
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// this is valid as an assertion.
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(void)(end);
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ai_assert(static_cast<size_t>(end - data) >= sizeof(T));
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T result = static_cast<T>(0);
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::memcpy(&result, data, sizeof(T));
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return result;
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}
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}
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namespace Assimp {
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namespace FBX {
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// ------------------------------------------------------------------------------------------------
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Element::Element(const Token& key_token, Parser& parser)
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: key_token(key_token)
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{
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TokenPtr n = nullptr;
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do {
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n = parser.AdvanceToNextToken();
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if(!n) {
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ParseError("unexpected end of file, expected closing bracket",parser.LastToken());
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}
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if (n->Type() == TokenType_DATA) {
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tokens.push_back(n);
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TokenPtr prev = n;
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n = parser.AdvanceToNextToken();
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if(!n) {
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ParseError("unexpected end of file, expected bracket, comma or key",parser.LastToken());
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}
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const TokenType ty = n->Type();
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// some exporters are missing a comma on the next line
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if (ty == TokenType_DATA && prev->Type() == TokenType_DATA && (n->Line() == prev->Line() + 1)) {
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tokens.push_back(n);
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continue;
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}
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if (ty != TokenType_OPEN_BRACKET && ty != TokenType_CLOSE_BRACKET && ty != TokenType_COMMA && ty != TokenType_KEY) {
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ParseError("unexpected token; expected bracket, comma or key",n);
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}
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}
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if (n->Type() == TokenType_OPEN_BRACKET) {
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compound.reset(new Scope(parser));
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// current token should be a TOK_CLOSE_BRACKET
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n = parser.CurrentToken();
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ai_assert(n);
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if (n->Type() != TokenType_CLOSE_BRACKET) {
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ParseError("expected closing bracket",n);
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}
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parser.AdvanceToNextToken();
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return;
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}
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}
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while(n->Type() != TokenType_KEY && n->Type() != TokenType_CLOSE_BRACKET);
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}
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// ------------------------------------------------------------------------------------------------
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Element::~Element()
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{
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// no need to delete tokens, they are owned by the parser
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}
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// ------------------------------------------------------------------------------------------------
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Scope::Scope(Parser& parser,bool topLevel)
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{
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if(!topLevel) {
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TokenPtr t = parser.CurrentToken();
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if (t->Type() != TokenType_OPEN_BRACKET) {
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ParseError("expected open bracket",t);
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}
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}
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TokenPtr n = parser.AdvanceToNextToken();
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if(n == NULL) {
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ParseError("unexpected end of file");
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}
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// note: empty scopes are allowed
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while(n->Type() != TokenType_CLOSE_BRACKET) {
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if (n->Type() != TokenType_KEY) {
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ParseError("unexpected token, expected TOK_KEY",n);
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}
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const std::string& str = n->StringContents();
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elements.insert(ElementMap::value_type(str,new_Element(*n,parser)));
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// Element() should stop at the next Key token (or right after a Close token)
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n = parser.CurrentToken();
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if(n == NULL) {
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if (topLevel) {
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return;
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}
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ParseError("unexpected end of file",parser.LastToken());
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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Scope::~Scope()
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{
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for(ElementMap::value_type& v : elements) {
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delete v.second;
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}
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}
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// ------------------------------------------------------------------------------------------------
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Parser::Parser (const TokenList& tokens, bool is_binary)
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: tokens(tokens)
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, last()
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, current()
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, cursor(tokens.begin())
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, is_binary(is_binary)
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{
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root.reset(new Scope(*this,true));
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}
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// ------------------------------------------------------------------------------------------------
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Parser::~Parser()
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{
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// empty
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}
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// ------------------------------------------------------------------------------------------------
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TokenPtr Parser::AdvanceToNextToken()
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{
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last = current;
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if (cursor == tokens.end()) {
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current = NULL;
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} else {
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current = *cursor++;
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}
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return current;
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}
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// ------------------------------------------------------------------------------------------------
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TokenPtr Parser::CurrentToken() const
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{
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return current;
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}
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// ------------------------------------------------------------------------------------------------
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TokenPtr Parser::LastToken() const
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{
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return last;
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}
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// ------------------------------------------------------------------------------------------------
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uint64_t ParseTokenAsID(const Token& t, const char*& err_out)
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{
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err_out = NULL;
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if (t.Type() != TokenType_DATA) {
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err_out = "expected TOK_DATA token";
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return 0L;
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}
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if(t.IsBinary())
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{
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const char* data = t.begin();
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if (data[0] != 'L') {
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err_out = "failed to parse ID, unexpected data type, expected L(ong) (binary)";
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return 0L;
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}
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BE_NCONST uint64_t id = SafeParse<uint64_t>(data+1, t.end());
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AI_SWAP8(id);
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return id;
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}
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// XXX: should use size_t here
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unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
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ai_assert(length > 0);
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const char* out = nullptr;
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const uint64_t id = strtoul10_64(t.begin(),&out,&length);
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if (out > t.end()) {
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err_out = "failed to parse ID (text)";
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return 0L;
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}
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return id;
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}
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// ------------------------------------------------------------------------------------------------
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size_t ParseTokenAsDim(const Token& t, const char*& err_out)
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{
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// same as ID parsing, except there is a trailing asterisk
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err_out = NULL;
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if (t.Type() != TokenType_DATA) {
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err_out = "expected TOK_DATA token";
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return 0;
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}
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if(t.IsBinary())
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{
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const char* data = t.begin();
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if (data[0] != 'L') {
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err_out = "failed to parse ID, unexpected data type, expected L(ong) (binary)";
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return 0;
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}
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BE_NCONST uint64_t id = SafeParse<uint64_t>(data+1, t.end());
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AI_SWAP8(id);
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return static_cast<size_t>(id);
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}
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if(*t.begin() != '*') {
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err_out = "expected asterisk before array dimension";
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return 0;
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}
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// XXX: should use size_t here
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unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
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if(length == 0) {
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err_out = "expected valid integer number after asterisk";
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return 0;
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}
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const char* out = nullptr;
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const size_t id = static_cast<size_t>(strtoul10_64(t.begin() + 1,&out,&length));
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if (out > t.end()) {
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err_out = "failed to parse ID";
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return 0;
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}
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return id;
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}
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// ------------------------------------------------------------------------------------------------
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float ParseTokenAsFloat(const Token& t, const char*& err_out)
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{
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err_out = NULL;
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if (t.Type() != TokenType_DATA) {
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err_out = "expected TOK_DATA token";
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return 0.0f;
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}
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if(t.IsBinary())
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{
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const char* data = t.begin();
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if (data[0] != 'F' && data[0] != 'D') {
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err_out = "failed to parse F(loat) or D(ouble), unexpected data type (binary)";
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return 0.0f;
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}
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if (data[0] == 'F') {
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return SafeParse<float>(data+1, t.end());
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}
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else {
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return static_cast<float>( SafeParse<double>(data+1, t.end()) );
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}
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}
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// need to copy the input string to a temporary buffer
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// first - next in the fbx token stream comes ',',
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// which fast_atof could interpret as decimal point.
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#define MAX_FLOAT_LENGTH 31
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char temp[MAX_FLOAT_LENGTH + 1];
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const size_t length = static_cast<size_t>(t.end()-t.begin());
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std::copy(t.begin(),t.end(),temp);
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temp[std::min(static_cast<size_t>(MAX_FLOAT_LENGTH),length)] = '\0';
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return fast_atof(temp);
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}
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// ------------------------------------------------------------------------------------------------
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int ParseTokenAsInt(const Token& t, const char*& err_out)
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{
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err_out = NULL;
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if (t.Type() != TokenType_DATA) {
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err_out = "expected TOK_DATA token";
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return 0;
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}
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if(t.IsBinary())
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{
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const char* data = t.begin();
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if (data[0] != 'I') {
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err_out = "failed to parse I(nt), unexpected data type (binary)";
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return 0;
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}
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BE_NCONST int32_t ival = SafeParse<int32_t>(data+1, t.end());
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AI_SWAP4(ival);
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return static_cast<int>(ival);
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}
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ai_assert(static_cast<size_t>(t.end() - t.begin()) > 0);
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const char* out;
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const int intval = strtol10(t.begin(),&out);
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if (out != t.end()) {
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err_out = "failed to parse ID";
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return 0;
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}
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return intval;
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}
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// ------------------------------------------------------------------------------------------------
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int64_t ParseTokenAsInt64(const Token& t, const char*& err_out)
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{
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err_out = NULL;
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if (t.Type() != TokenType_DATA) {
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err_out = "expected TOK_DATA token";
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return 0L;
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}
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if (t.IsBinary())
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{
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const char* data = t.begin();
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if (data[0] != 'L') {
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err_out = "failed to parse Int64, unexpected data type";
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return 0L;
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}
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BE_NCONST int64_t id = SafeParse<int64_t>(data + 1, t.end());
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AI_SWAP8(id);
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return id;
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}
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// XXX: should use size_t here
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unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
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ai_assert(length > 0);
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const char* out = nullptr;
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const int64_t id = strtol10_64(t.begin(), &out, &length);
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if (out > t.end()) {
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err_out = "failed to parse Int64 (text)";
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return 0L;
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}
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return id;
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}
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// ------------------------------------------------------------------------------------------------
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std::string ParseTokenAsString(const Token& t, const char*& err_out)
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{
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err_out = NULL;
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if (t.Type() != TokenType_DATA) {
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err_out = "expected TOK_DATA token";
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return "";
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}
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if(t.IsBinary())
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{
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const char* data = t.begin();
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if (data[0] != 'S') {
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err_out = "failed to parse S(tring), unexpected data type (binary)";
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return "";
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}
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// read string length
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BE_NCONST int32_t len = SafeParse<int32_t>(data+1, t.end());
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AI_SWAP4(len);
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ai_assert(t.end() - data == 5 + len);
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return std::string(data + 5, len);
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}
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const size_t length = static_cast<size_t>(t.end() - t.begin());
|
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if(length < 2) {
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err_out = "token is too short to hold a string";
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return "";
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}
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const char* s = t.begin(), *e = t.end() - 1;
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if (*s != '\"' || *e != '\"') {
|
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err_out = "expected double quoted string";
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return "";
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}
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return std::string(s+1,length-2);
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}
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namespace {
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// ------------------------------------------------------------------------------------------------
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// read the type code and element count of a binary data array and stop there
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void ReadBinaryDataArrayHead(const char*& data, const char* end, char& type, uint32_t& count,
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const Element& el)
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{
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if (static_cast<size_t>(end-data) < 5) {
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ParseError("binary data array is too short, need five (5) bytes for type signature and element count",&el);
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}
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// data type
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type = *data;
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// read number of elements
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BE_NCONST uint32_t len = SafeParse<uint32_t>(data+1, end);
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AI_SWAP4(len);
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count = len;
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data += 5;
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}
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// ------------------------------------------------------------------------------------------------
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// read binary data array, assume cursor points to the 'compression mode' field (i.e. behind the header)
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void ReadBinaryDataArray(char type, uint32_t count, const char*& data, const char* end,
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std::vector<char>& buff,
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const Element& /*el*/)
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{
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BE_NCONST uint32_t encmode = SafeParse<uint32_t>(data, end);
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AI_SWAP4(encmode);
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data += 4;
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// next comes the compressed length
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BE_NCONST uint32_t comp_len = SafeParse<uint32_t>(data, end);
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AI_SWAP4(comp_len);
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data += 4;
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ai_assert(data + comp_len == end);
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// determine the length of the uncompressed data by looking at the type signature
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uint32_t stride = 0;
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switch(type)
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{
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case 'f':
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case 'i':
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stride = 4;
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break;
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case 'd':
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case 'l':
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stride = 8;
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break;
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default:
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ai_assert(false);
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};
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const uint32_t full_length = stride * count;
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buff.resize(full_length);
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if(encmode == 0) {
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ai_assert(full_length == comp_len);
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// plain data, no compression
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std::copy(data, end, buff.begin());
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}
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else if(encmode == 1) {
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// zlib/deflate, next comes ZIP head (0x78 0x01)
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// see http://www.ietf.org/rfc/rfc1950.txt
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|
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z_stream zstream;
|
|
zstream.opaque = Z_NULL;
|
|
zstream.zalloc = Z_NULL;
|
|
zstream.zfree = Z_NULL;
|
|
zstream.data_type = Z_BINARY;
|
|
|
|
// http://hewgill.com/journal/entries/349-how-to-decompress-gzip-stream-with-zlib
|
|
if(Z_OK != inflateInit(&zstream)) {
|
|
ParseError("failure initializing zlib");
|
|
}
|
|
|
|
zstream.next_in = reinterpret_cast<Bytef*>( const_cast<char*>(data) );
|
|
zstream.avail_in = comp_len;
|
|
|
|
zstream.avail_out = static_cast<uInt>(buff.size());
|
|
zstream.next_out = reinterpret_cast<Bytef*>(&*buff.begin());
|
|
const int ret = inflate(&zstream, Z_FINISH);
|
|
|
|
if (ret != Z_STREAM_END && ret != Z_OK) {
|
|
ParseError("failure decompressing compressed data section");
|
|
}
|
|
|
|
// terminate zlib
|
|
inflateEnd(&zstream);
|
|
}
|
|
#ifdef ASSIMP_BUILD_DEBUG
|
|
else {
|
|
// runtime check for this happens at tokenization stage
|
|
ai_assert(false);
|
|
}
|
|
#endif
|
|
|
|
data += comp_len;
|
|
ai_assert(data == end);
|
|
}
|
|
|
|
} // !anon
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of float3 tuples
|
|
void ParseVectorDataArray(std::vector<aiVector3D>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(count % 3 != 0) {
|
|
ParseError("number of floats is not a multiple of three (3) (binary)",&el);
|
|
}
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'd' && type != 'f') {
|
|
ParseError("expected float or double array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * (type == 'd' ? 8 : 4));
|
|
|
|
const uint32_t count3 = count / 3;
|
|
out.reserve(count3);
|
|
|
|
if (type == 'd') {
|
|
const double* d = reinterpret_cast<const double*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count3; ++i, d += 3) {
|
|
out.push_back(aiVector3D(static_cast<ai_real>(d[0]),
|
|
static_cast<ai_real>(d[1]),
|
|
static_cast<ai_real>(d[2])));
|
|
}
|
|
// for debugging
|
|
/*for ( size_t i = 0; i < out.size(); i++ ) {
|
|
aiVector3D vec3( out[ i ] );
|
|
std::stringstream stream;
|
|
stream << " vec3.x = " << vec3.x << " vec3.y = " << vec3.y << " vec3.z = " << vec3.z << std::endl;
|
|
DefaultLogger::get()->info( stream.str() );
|
|
}*/
|
|
}
|
|
else if (type == 'f') {
|
|
const float* f = reinterpret_cast<const float*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count3; ++i, f += 3) {
|
|
out.push_back(aiVector3D(f[0],f[1],f[2]));
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// may throw bad_alloc if the input is rubbish, but this need
|
|
// not to be prevented - importing would fail but we wouldn't
|
|
// crash since assimp handles this case properly.
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
if (a.Tokens().size() % 3 != 0) {
|
|
ParseError("number of floats is not a multiple of three (3)",&el);
|
|
}
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
aiVector3D v;
|
|
v.x = ParseTokenAsFloat(**it++);
|
|
v.y = ParseTokenAsFloat(**it++);
|
|
v.z = ParseTokenAsFloat(**it++);
|
|
|
|
out.push_back(v);
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of color4 tuples
|
|
void ParseVectorDataArray(std::vector<aiColor4D>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(count % 4 != 0) {
|
|
ParseError("number of floats is not a multiple of four (4) (binary)",&el);
|
|
}
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'd' && type != 'f') {
|
|
ParseError("expected float or double array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * (type == 'd' ? 8 : 4));
|
|
|
|
const uint32_t count4 = count / 4;
|
|
out.reserve(count4);
|
|
|
|
if (type == 'd') {
|
|
const double* d = reinterpret_cast<const double*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count4; ++i, d += 4) {
|
|
out.push_back(aiColor4D(static_cast<float>(d[0]),
|
|
static_cast<float>(d[1]),
|
|
static_cast<float>(d[2]),
|
|
static_cast<float>(d[3])));
|
|
}
|
|
}
|
|
else if (type == 'f') {
|
|
const float* f = reinterpret_cast<const float*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count4; ++i, f += 4) {
|
|
out.push_back(aiColor4D(f[0],f[1],f[2],f[3]));
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray() above
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
if (a.Tokens().size() % 4 != 0) {
|
|
ParseError("number of floats is not a multiple of four (4)",&el);
|
|
}
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
aiColor4D v;
|
|
v.r = ParseTokenAsFloat(**it++);
|
|
v.g = ParseTokenAsFloat(**it++);
|
|
v.b = ParseTokenAsFloat(**it++);
|
|
v.a = ParseTokenAsFloat(**it++);
|
|
|
|
out.push_back(v);
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of float2 tuples
|
|
void ParseVectorDataArray(std::vector<aiVector2D>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(count % 2 != 0) {
|
|
ParseError("number of floats is not a multiple of two (2) (binary)",&el);
|
|
}
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'd' && type != 'f') {
|
|
ParseError("expected float or double array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * (type == 'd' ? 8 : 4));
|
|
|
|
const uint32_t count2 = count / 2;
|
|
out.reserve(count2);
|
|
|
|
if (type == 'd') {
|
|
const double* d = reinterpret_cast<const double*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count2; ++i, d += 2) {
|
|
out.push_back(aiVector2D(static_cast<float>(d[0]),
|
|
static_cast<float>(d[1])));
|
|
}
|
|
}
|
|
else if (type == 'f') {
|
|
const float* f = reinterpret_cast<const float*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count2; ++i, f += 2) {
|
|
out.push_back(aiVector2D(f[0],f[1]));
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray() above
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
if (a.Tokens().size() % 2 != 0) {
|
|
ParseError("number of floats is not a multiple of two (2)",&el);
|
|
}
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
aiVector2D v;
|
|
v.x = ParseTokenAsFloat(**it++);
|
|
v.y = ParseTokenAsFloat(**it++);
|
|
|
|
out.push_back(v);
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of ints
|
|
void ParseVectorDataArray(std::vector<int>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'i') {
|
|
ParseError("expected int array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * 4);
|
|
|
|
out.reserve(count);
|
|
|
|
const int32_t* ip = reinterpret_cast<const int32_t*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count; ++i, ++ip) {
|
|
BE_NCONST int32_t val = *ip;
|
|
AI_SWAP4(val);
|
|
out.push_back(val);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray()
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
const int ival = ParseTokenAsInt(**it++);
|
|
out.push_back(ival);
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of floats
|
|
void ParseVectorDataArray(std::vector<float>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'd' && type != 'f') {
|
|
ParseError("expected float or double array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * (type == 'd' ? 8 : 4));
|
|
|
|
if (type == 'd') {
|
|
const double* d = reinterpret_cast<const double*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count; ++i, ++d) {
|
|
out.push_back(static_cast<float>(*d));
|
|
}
|
|
}
|
|
else if (type == 'f') {
|
|
const float* f = reinterpret_cast<const float*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count; ++i, ++f) {
|
|
out.push_back(*f);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray()
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
const float ival = ParseTokenAsFloat(**it++);
|
|
out.push_back(ival);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of uints
|
|
void ParseVectorDataArray(std::vector<unsigned int>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'i') {
|
|
ParseError("expected (u)int array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * 4);
|
|
|
|
out.reserve(count);
|
|
|
|
const int32_t* ip = reinterpret_cast<const int32_t*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count; ++i, ++ip) {
|
|
BE_NCONST int32_t val = *ip;
|
|
if(val < 0) {
|
|
ParseError("encountered negative integer index (binary)");
|
|
}
|
|
|
|
AI_SWAP4(val);
|
|
out.push_back(val);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray()
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
const int ival = ParseTokenAsInt(**it++);
|
|
if(ival < 0) {
|
|
ParseError("encountered negative integer index");
|
|
}
|
|
out.push_back(static_cast<unsigned int>(ival));
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of uint64_ts
|
|
void ParseVectorDataArray(std::vector<uint64_t>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if(tok.empty()) {
|
|
ParseError("unexpected empty element",&el);
|
|
}
|
|
|
|
if(tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if(!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'l') {
|
|
ParseError("expected long array (binary)",&el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * 8);
|
|
|
|
out.reserve(count);
|
|
|
|
const uint64_t* ip = reinterpret_cast<const uint64_t*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count; ++i, ++ip) {
|
|
BE_NCONST uint64_t val = *ip;
|
|
AI_SWAP8(val);
|
|
out.push_back(val);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray()
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope,"a",&el);
|
|
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
|
|
const uint64_t ival = ParseTokenAsID(**it++);
|
|
|
|
out.push_back(ival);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// read an array of int64_ts
|
|
void ParseVectorDataArray(std::vector<int64_t>& out, const Element& el)
|
|
{
|
|
out.resize( 0 );
|
|
const TokenList& tok = el.Tokens();
|
|
if (tok.empty()) {
|
|
ParseError("unexpected empty element", &el);
|
|
}
|
|
|
|
if (tok[0]->IsBinary()) {
|
|
const char* data = tok[0]->begin(), *end = tok[0]->end();
|
|
|
|
char type;
|
|
uint32_t count;
|
|
ReadBinaryDataArrayHead(data, end, type, count, el);
|
|
|
|
if (!count) {
|
|
return;
|
|
}
|
|
|
|
if (type != 'l') {
|
|
ParseError("expected long array (binary)", &el);
|
|
}
|
|
|
|
std::vector<char> buff;
|
|
ReadBinaryDataArray(type, count, data, end, buff, el);
|
|
|
|
ai_assert(data == end);
|
|
ai_assert(buff.size() == count * 8);
|
|
|
|
out.reserve(count);
|
|
|
|
const int64_t* ip = reinterpret_cast<const int64_t*>(&buff[0]);
|
|
for (unsigned int i = 0; i < count; ++i, ++ip) {
|
|
BE_NCONST int64_t val = *ip;
|
|
AI_SWAP8(val);
|
|
out.push_back(val);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const size_t dim = ParseTokenAsDim(*tok[0]);
|
|
|
|
// see notes in ParseVectorDataArray()
|
|
out.reserve(dim);
|
|
|
|
const Scope& scope = GetRequiredScope(el);
|
|
const Element& a = GetRequiredElement(scope, "a", &el);
|
|
|
|
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end;) {
|
|
const int64_t ival = ParseTokenAsInt64(**it++);
|
|
|
|
out.push_back(ival);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
aiMatrix4x4 ReadMatrix(const Element& element)
|
|
{
|
|
std::vector<float> values;
|
|
ParseVectorDataArray(values,element);
|
|
|
|
if(values.size() != 16) {
|
|
ParseError("expected 16 matrix elements");
|
|
}
|
|
|
|
aiMatrix4x4 result;
|
|
|
|
|
|
result.a1 = values[0];
|
|
result.a2 = values[1];
|
|
result.a3 = values[2];
|
|
result.a4 = values[3];
|
|
|
|
result.b1 = values[4];
|
|
result.b2 = values[5];
|
|
result.b3 = values[6];
|
|
result.b4 = values[7];
|
|
|
|
result.c1 = values[8];
|
|
result.c2 = values[9];
|
|
result.c3 = values[10];
|
|
result.c4 = values[11];
|
|
|
|
result.d1 = values[12];
|
|
result.d2 = values[13];
|
|
result.d3 = values[14];
|
|
result.d4 = values[15];
|
|
|
|
result.Transpose();
|
|
return result;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// wrapper around ParseTokenAsString() with ParseError handling
|
|
std::string ParseTokenAsString(const Token& t)
|
|
{
|
|
const char* err;
|
|
const std::string& i = ParseTokenAsString(t,err);
|
|
if(err) {
|
|
ParseError(err,t);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
bool HasElement( const Scope& sc, const std::string& index ) {
|
|
const Element* el = sc[ index ];
|
|
if ( nullptr == el ) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// extract a required element from a scope, abort if the element cannot be found
|
|
const Element& GetRequiredElement(const Scope& sc, const std::string& index, const Element* element /*= NULL*/)
|
|
{
|
|
const Element* el = sc[index];
|
|
if(!el) {
|
|
ParseError("did not find required element \"" + index + "\"",element);
|
|
}
|
|
return *el;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// extract required compound scope
|
|
const Scope& GetRequiredScope(const Element& el)
|
|
{
|
|
const Scope* const s = el.Compound();
|
|
if(!s) {
|
|
ParseError("expected compound scope",&el);
|
|
}
|
|
|
|
return *s;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// get token at a particular index
|
|
const Token& GetRequiredToken(const Element& el, unsigned int index)
|
|
{
|
|
const TokenList& t = el.Tokens();
|
|
if(index >= t.size()) {
|
|
ParseError(Formatter::format( "missing token at index " ) << index,&el);
|
|
}
|
|
|
|
return *t[index];
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// wrapper around ParseTokenAsID() with ParseError handling
|
|
uint64_t ParseTokenAsID(const Token& t)
|
|
{
|
|
const char* err;
|
|
const uint64_t i = ParseTokenAsID(t,err);
|
|
if(err) {
|
|
ParseError(err,t);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// wrapper around ParseTokenAsDim() with ParseError handling
|
|
size_t ParseTokenAsDim(const Token& t)
|
|
{
|
|
const char* err;
|
|
const size_t i = ParseTokenAsDim(t,err);
|
|
if(err) {
|
|
ParseError(err,t);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// wrapper around ParseTokenAsFloat() with ParseError handling
|
|
float ParseTokenAsFloat(const Token& t)
|
|
{
|
|
const char* err;
|
|
const float i = ParseTokenAsFloat(t,err);
|
|
if(err) {
|
|
ParseError(err,t);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// wrapper around ParseTokenAsInt() with ParseError handling
|
|
int ParseTokenAsInt(const Token& t)
|
|
{
|
|
const char* err;
|
|
const int i = ParseTokenAsInt(t,err);
|
|
if(err) {
|
|
ParseError(err,t);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// wrapper around ParseTokenAsInt64() with ParseError handling
|
|
int64_t ParseTokenAsInt64(const Token& t)
|
|
{
|
|
const char* err;
|
|
const int64_t i = ParseTokenAsInt64(t, err);
|
|
if (err) {
|
|
ParseError(err, t);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
} // !FBX
|
|
} // !Assimp
|
|
|
|
#endif
|