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Diffstat (limited to 'src/mesh/assimp-master/code/AssetLib/FBX/FBXBinaryTokenizer.cpp')
| -rw-r--r-- | src/mesh/assimp-master/code/AssetLib/FBX/FBXBinaryTokenizer.cpp | 485 |
1 files changed, 0 insertions, 485 deletions
diff --git a/src/mesh/assimp-master/code/AssetLib/FBX/FBXBinaryTokenizer.cpp b/src/mesh/assimp-master/code/AssetLib/FBX/FBXBinaryTokenizer.cpp deleted file mode 100644 index 1a4d118..0000000 --- a/src/mesh/assimp-master/code/AssetLib/FBX/FBXBinaryTokenizer.cpp +++ /dev/null @@ -1,485 +0,0 @@ -/* -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 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. - ----------------------------------------------------------------------- -*/ -/** @file FBXBinaryTokenizer.cpp - * @brief Implementation of a fake lexer for binary fbx files - - * we emit tokens so the parser needs almost no special handling - * for binary files. - */ - -#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER - -#include "FBXTokenizer.h" -#include "FBXUtil.h" -#include <assimp/defs.h> -#include <stdint.h> -#include <assimp/Exceptional.h> -#include <assimp/ByteSwapper.h> -#include <assimp/DefaultLogger.hpp> -#include <assimp/StringUtils.h> - -namespace Assimp { -namespace FBX { - -//enum Flag -//{ -// e_unknown_0 = 1 << 0, -// e_unknown_1 = 1 << 1, -// e_unknown_2 = 1 << 2, -// e_unknown_3 = 1 << 3, -// e_unknown_4 = 1 << 4, -// e_unknown_5 = 1 << 5, -// e_unknown_6 = 1 << 6, -// e_unknown_7 = 1 << 7, -// e_unknown_8 = 1 << 8, -// e_unknown_9 = 1 << 9, -// e_unknown_10 = 1 << 10, -// e_unknown_11 = 1 << 11, -// e_unknown_12 = 1 << 12, -// e_unknown_13 = 1 << 13, -// e_unknown_14 = 1 << 14, -// e_unknown_15 = 1 << 15, -// e_unknown_16 = 1 << 16, -// e_unknown_17 = 1 << 17, -// e_unknown_18 = 1 << 18, -// e_unknown_19 = 1 << 19, -// e_unknown_20 = 1 << 20, -// e_unknown_21 = 1 << 21, -// e_unknown_22 = 1 << 22, -// e_unknown_23 = 1 << 23, -// e_flag_field_size_64_bit = 1 << 24, // Not sure what is -// e_unknown_25 = 1 << 25, -// e_unknown_26 = 1 << 26, -// e_unknown_27 = 1 << 27, -// e_unknown_28 = 1 << 28, -// e_unknown_29 = 1 << 29, -// e_unknown_30 = 1 << 30, -// e_unknown_31 = 1 << 31 -//}; -// -//bool check_flag(uint32_t flags, Flag to_check) -//{ -// return (flags & to_check) != 0; -//} -// ------------------------------------------------------------------------------------------------ -Token::Token(const char* sbegin, const char* send, TokenType type, size_t offset) - : - #ifdef DEBUG - contents(sbegin, static_cast<size_t>(send-sbegin)), - #endif - sbegin(sbegin) - , send(send) - , type(type) - , line(offset) - , column(BINARY_MARKER) -{ - ai_assert(sbegin); - ai_assert(send); - - // binary tokens may have zero length because they are sometimes dummies - // inserted by TokenizeBinary() - ai_assert(send >= sbegin); -} - - -namespace { - -// ------------------------------------------------------------------------------------------------ -// signal tokenization error, this is always unrecoverable. Throws DeadlyImportError. -AI_WONT_RETURN void TokenizeError(const std::string& message, size_t offset) AI_WONT_RETURN_SUFFIX; -AI_WONT_RETURN void TokenizeError(const std::string& message, size_t offset) -{ - throw DeadlyImportError("FBX-Tokenize", Util::GetOffsetText(offset), message); -} - - -// ------------------------------------------------------------------------------------------------ -size_t Offset(const char* begin, const char* cursor) { - ai_assert(begin <= cursor); - - return cursor - begin; -} - -// ------------------------------------------------------------------------------------------------ -void TokenizeError(const std::string& message, const char* begin, const char* cursor) { - TokenizeError(message, Offset(begin, cursor)); -} - -// ------------------------------------------------------------------------------------------------ -uint32_t ReadWord(const char* input, const char*& cursor, const char* end) { - const size_t k_to_read = sizeof( uint32_t ); - if(Offset(cursor, end) < k_to_read ) { - TokenizeError("cannot ReadWord, out of bounds",input, cursor); - } - - uint32_t word; - ::memcpy(&word, cursor, 4); - AI_SWAP4(word); - - cursor += k_to_read; - - return word; -} - -// ------------------------------------------------------------------------------------------------ -uint64_t ReadDoubleWord(const char* input, const char*& cursor, const char* end) { - const size_t k_to_read = sizeof(uint64_t); - if(Offset(cursor, end) < k_to_read) { - TokenizeError("cannot ReadDoubleWord, out of bounds",input, cursor); - } - - uint64_t dword /*= *reinterpret_cast<const uint64_t*>(cursor)*/; - ::memcpy( &dword, cursor, sizeof( uint64_t ) ); - AI_SWAP8(dword); - - cursor += k_to_read; - - return dword; -} - -// ------------------------------------------------------------------------------------------------ -uint8_t ReadByte(const char* input, const char*& cursor, const char* end) { - if(Offset(cursor, end) < sizeof( uint8_t ) ) { - TokenizeError("cannot ReadByte, out of bounds",input, cursor); - } - - uint8_t word;/* = *reinterpret_cast< const uint8_t* >( cursor )*/ - ::memcpy( &word, cursor, sizeof( uint8_t ) ); - ++cursor; - - return word; -} - -// ------------------------------------------------------------------------------------------------ -unsigned int ReadString(const char*& sbegin_out, const char*& send_out, const char* input, - const char*& cursor, const char* end, bool long_length = false, bool allow_null = false) { - const uint32_t len_len = long_length ? 4 : 1; - if(Offset(cursor, end) < len_len) { - TokenizeError("cannot ReadString, out of bounds reading length",input, cursor); - } - - const uint32_t length = long_length ? ReadWord(input, cursor, end) : ReadByte(input, cursor, end); - - if (Offset(cursor, end) < length) { - TokenizeError("cannot ReadString, length is out of bounds",input, cursor); - } - - sbegin_out = cursor; - cursor += length; - - send_out = cursor; - - if(!allow_null) { - for (unsigned int i = 0; i < length; ++i) { - if(sbegin_out[i] == '\0') { - TokenizeError("failed ReadString, unexpected NUL character in string",input, cursor); - } - } - } - - return length; -} - -// ------------------------------------------------------------------------------------------------ -void ReadData(const char*& sbegin_out, const char*& send_out, const char* input, const char*& cursor, const char* end) { - if(Offset(cursor, end) < 1) { - TokenizeError("cannot ReadData, out of bounds reading length",input, cursor); - } - - const char type = *cursor; - sbegin_out = cursor++; - - switch(type) - { - // 16 bit int - case 'Y': - cursor += 2; - break; - - // 1 bit bool flag (yes/no) - case 'C': - cursor += 1; - break; - - // 32 bit int - case 'I': - // <- fall through - - // float - case 'F': - cursor += 4; - break; - - // double - case 'D': - cursor += 8; - break; - - // 64 bit int - case 'L': - cursor += 8; - break; - - // note: do not write cursor += ReadWord(...cursor) as this would be UB - - // raw binary data - case 'R': - { - const uint32_t length = ReadWord(input, cursor, end); - cursor += length; - break; - } - - case 'b': - // TODO: what is the 'b' type code? Right now we just skip over it / - // take the full range we could get - cursor = end; - break; - - // array of * - case 'f': - case 'd': - case 'l': - case 'i': - case 'c': { - const uint32_t length = ReadWord(input, cursor, end); - const uint32_t encoding = ReadWord(input, cursor, end); - - const uint32_t comp_len = ReadWord(input, cursor, end); - - // compute length based on type and check against the stored value - if(encoding == 0) { - uint32_t stride = 0; - switch(type) - { - case 'f': - case 'i': - stride = 4; - break; - - case 'd': - case 'l': - stride = 8; - break; - - case 'c': - stride = 1; - break; - - default: - ai_assert(false); - }; - ai_assert(stride > 0); - if(length * stride != comp_len) { - TokenizeError("cannot ReadData, calculated data stride differs from what the file claims",input, cursor); - } - } - // zip/deflate algorithm (encoding==1)? take given length. anything else? die - else if (encoding != 1) { - TokenizeError("cannot ReadData, unknown encoding",input, cursor); - } - cursor += comp_len; - break; - } - - // string - case 'S': { - const char* sb, *se; - // 0 characters can legally happen in such strings - ReadString(sb, se, input, cursor, end, true, true); - break; - } - default: - TokenizeError("cannot ReadData, unexpected type code: " + std::string(&type, 1),input, cursor); - } - - if(cursor > end) { - TokenizeError("cannot ReadData, the remaining size is too small for the data type: " + std::string(&type, 1),input, cursor); - } - - // the type code is contained in the returned range - send_out = cursor; -} - - -// ------------------------------------------------------------------------------------------------ -bool ReadScope(TokenList& output_tokens, const char* input, const char*& cursor, const char* end, bool const is64bits) -{ - // the first word contains the offset at which this block ends - const uint64_t end_offset = is64bits ? ReadDoubleWord(input, cursor, end) : ReadWord(input, cursor, end); - - // we may get 0 if reading reached the end of the file - - // fbx files have a mysterious extra footer which I don't know - // how to extract any information from, but at least it always - // starts with a 0. - if(!end_offset) { - return false; - } - - if(end_offset > Offset(input, end)) { - TokenizeError("block offset is out of range",input, cursor); - } - else if(end_offset < Offset(input, cursor)) { - TokenizeError("block offset is negative out of range",input, cursor); - } - - // the second data word contains the number of properties in the scope - const uint64_t prop_count = is64bits ? ReadDoubleWord(input, cursor, end) : ReadWord(input, cursor, end); - - // the third data word contains the length of the property list - const uint64_t prop_length = is64bits ? ReadDoubleWord(input, cursor, end) : ReadWord(input, cursor, end); - - // now comes the name of the scope/key - const char* sbeg, *send; - ReadString(sbeg, send, input, cursor, end); - - output_tokens.push_back(new_Token(sbeg, send, TokenType_KEY, Offset(input, cursor) )); - - // now come the individual properties - const char* begin_cursor = cursor; - - if ((begin_cursor + prop_length) > end) { - TokenizeError("property length out of bounds reading length ", input, cursor); - } - - for (unsigned int i = 0; i < prop_count; ++i) { - ReadData(sbeg, send, input, cursor, begin_cursor + prop_length); - - output_tokens.push_back(new_Token(sbeg, send, TokenType_DATA, Offset(input, cursor) )); - - if(i != prop_count-1) { - output_tokens.push_back(new_Token(cursor, cursor + 1, TokenType_COMMA, Offset(input, cursor) )); - } - } - - if (Offset(begin_cursor, cursor) != prop_length) { - TokenizeError("property length not reached, something is wrong",input, cursor); - } - - // at the end of each nested block, there is a NUL record to indicate - // that the sub-scope exists (i.e. to distinguish between P: and P : {}) - // this NUL record is 13 bytes long on 32 bit version and 25 bytes long on 64 bit. - const size_t sentinel_block_length = is64bits ? (sizeof(uint64_t)* 3 + 1) : (sizeof(uint32_t)* 3 + 1); - - if (Offset(input, cursor) < end_offset) { - if (end_offset - Offset(input, cursor) < sentinel_block_length) { - TokenizeError("insufficient padding bytes at block end",input, cursor); - } - - output_tokens.push_back(new_Token(cursor, cursor + 1, TokenType_OPEN_BRACKET, Offset(input, cursor) )); - - // XXX this is vulnerable to stack overflowing .. - while(Offset(input, cursor) < end_offset - sentinel_block_length) { - ReadScope(output_tokens, input, cursor, input + end_offset - sentinel_block_length, is64bits); - } - output_tokens.push_back(new_Token(cursor, cursor + 1, TokenType_CLOSE_BRACKET, Offset(input, cursor) )); - - for (unsigned int i = 0; i < sentinel_block_length; ++i) { - if(cursor[i] != '\0') { - TokenizeError("failed to read nested block sentinel, expected all bytes to be 0",input, cursor); - } - } - cursor += sentinel_block_length; - } - - if (Offset(input, cursor) != end_offset) { - TokenizeError("scope length not reached, something is wrong",input, cursor); - } - - return true; -} - -} // anonymous namespace - -// ------------------------------------------------------------------------------------------------ -// TODO: Test FBX Binary files newer than the 7500 version to check if the 64 bits address behaviour is consistent -void TokenizeBinary(TokenList& output_tokens, const char* input, size_t length) -{ - ai_assert(input); - ASSIMP_LOG_DEBUG("Tokenizing binary FBX file"); - - if(length < 0x1b) { - TokenizeError("file is too short",0); - } - - //uint32_t offset = 0x15; -/* const char* cursor = input + 0x15; - - const uint32_t flags = ReadWord(input, cursor, input + length); - - const uint8_t padding_0 = ReadByte(input, cursor, input + length); // unused - const uint8_t padding_1 = ReadByte(input, cursor, input + length); // unused*/ - - if (strncmp(input,"Kaydara FBX Binary",18)) { - TokenizeError("magic bytes not found",0); - } - - const char* cursor = input + 18; - /*Result ignored*/ ReadByte(input, cursor, input + length); - /*Result ignored*/ ReadByte(input, cursor, input + length); - /*Result ignored*/ ReadByte(input, cursor, input + length); - /*Result ignored*/ ReadByte(input, cursor, input + length); - /*Result ignored*/ ReadByte(input, cursor, input + length); - const uint32_t version = ReadWord(input, cursor, input + length); - ASSIMP_LOG_DEBUG("FBX version: ", version); - const bool is64bits = version >= 7500; - const char *end = input + length; - try - { - while (cursor < end ) { - if (!ReadScope(output_tokens, input, cursor, input + length, is64bits)) { - break; - } - } - } - catch (const DeadlyImportError& e) - { - if (!is64bits && (length > std::numeric_limits<std::uint32_t>::max())) { - throw DeadlyImportError("The FBX file is invalid. This may be because the content is too big for this older version (", ai_to_string(version), ") of the FBX format. (", e.what(), ")"); - } - throw; - } -} - -} // !FBX -} // !Assimp - -#endif |