1cee8de707
- Create complete VS2022 solution with 3 projects: * V2GDecoder: Main EXI decoder with debugging support * HexToBinary: Hex string to binary utility * HexDumpToBinary: Hex dump to binary utility - Copy all source files locally for Windows compilation: * Added Windows compatibility for unistd.h, fstat, S_ISREG * Fixed VLA issues in EncoderChannel.c with macro definitions * Include all required modules: codec, iso1, iso2, din, appHandshake - Build configuration: * Support Debug/Release x86/x64 configurations * Proper include directories and preprocessor definitions * Windows-specific compiler flags (_WIN32, __STDC_NO_VLA__) - Verification: * Both test4.exi and test5.exi decode/encode perfectly * 100% binary compatibility: original ↔ XML ↔ reencoded * Ready for step-by-step debugging in Visual Studio 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
|
|
/*
|
|
* Copyright (C) 2007-2018 Siemens AG
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published
|
|
* by the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*******************************************************************
|
|
*
|
|
* @author Sebastian.Kaebisch@siemens.com
|
|
* @author Daniel.Peintner.EXT@siemens.com
|
|
* @version 0.9.4
|
|
* @contact Richard.Kuntschke@siemens.com
|
|
*
|
|
********************************************************************/
|
|
|
|
/*
|
|
* This file implements the v2gtp header writer and reader.
|
|
*
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include <string.h>
|
|
|
|
#include "v2gtp.h"
|
|
|
|
|
|
int write_v2gtpHeader(uint8_t* outStream, uint32_t outStreamLength, uint16_t payloadType)
|
|
{
|
|
|
|
/* write v2gtp version number 1=byte */
|
|
outStream[0]=V2GTP_VERSION;
|
|
|
|
/* write inverse v2gtp version */
|
|
outStream[1]=V2GTP_VERSION_INV;
|
|
|
|
|
|
/* write payload type */
|
|
outStream[3] = (uint8_t)(payloadType & 0xFF);
|
|
outStream[2] = (uint8_t)(payloadType >> 8 & 0xFF);
|
|
|
|
/* write payload length */
|
|
outStream[7] = (uint8_t)(outStreamLength & 0xFF);
|
|
outStream[6] = (uint8_t)(outStreamLength>>8 & 0xFF);
|
|
outStream[5] = (uint8_t)(outStreamLength>>16 & 0xFF);
|
|
outStream[4] = (uint8_t)(outStreamLength>>24 & 0xFF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int read_v2gtpHeader(uint8_t* inStream, uint32_t* payloadLength)
|
|
{
|
|
uint16_t payloadType=0;
|
|
|
|
|
|
/* check, if we support this v2gtp version */
|
|
if(inStream[0]!=V2GTP_VERSION || inStream[1]!=V2GTP_VERSION_INV)
|
|
return -1;
|
|
|
|
|
|
/* check, if we support this payload type*/
|
|
payloadType = inStream[2];
|
|
payloadType = (payloadType << 8 | inStream[3]);
|
|
|
|
if(payloadType != V2GTP_EXI_TYPE)
|
|
return -1;
|
|
|
|
|
|
/* determine payload length*/
|
|
*payloadLength = inStream[4];
|
|
*payloadLength = (*payloadLength << 8 | inStream[5]);
|
|
*payloadLength = (*payloadLength << 8 | inStream[6]);
|
|
*payloadLength = (*payloadLength << 8 | inStream[7]);
|
|
|
|
return 0;
|
|
}
|
|
|