tit.c

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/*
 * This file is part of Titan2Reader
 *
 * Copyright (C) 2006, Sebastien Judenherc <sebastien.judenherc@agecodagis.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 */

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include <math.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <assert.h>
#include <signal.h>

#include "common.h"

unsigned char synchro=0x50;
int firstFrame=1;

FILE *titBinFile=NULL;
char titBinFileName[255];

FILE* OpenTitBinFile(void)
{
        int i;
        if (currentTime.usecond>0)
        {
                // initialize the remaing channels
                for (i=0; i<MAX_CHANNEL; i++)
                {
                        // if this channel has samples in the queue but none
                        // processed, then process it
                        if (infoHeader[i].uncorrected.usecond==0LL)
                        {
                                InitInfoHeader(i);
                        }
                }
        }
        if (titBinFile==NULL)
        {
                int fd;
                strcpy(titBinFileName,"titanfileXXXXXX");
                fd=OpenTempFile(titBinFileName);
                assert((titBinFile=fdopen(fd,"wb"))!=NULL);
                setvbuf(titBinFile,NULL,_IOFBF,FILE_BUFFER_SIZE);
        }
        return(titBinFile);
}

void AbortTitBinFile(void)
{
        if (titBinFile)
        {
                fclose(titBinFile);
                titBinFile=NULL;
        }
        unlink(titBinFileName);
}

void AddTitFrame(const unsigned char *frame)
{
        char f2[12];
        // ignore the first frames if they are time frames
#if 0
        if (firstFrame)
        {
                if (((frame[11]&0x7)==TIME_FRAME)||((frame[11]&0x7)==GPST_FRAME))
                {
                        return;
                }
        }
        firstFrame=0;
#endif
        if (OpenTitBinFile())
        {
                memcpy(f2,frame,12);
                f2[11]&=0x0f;
                f2[11]|=synchro;
                if (synchro==0x50)
                {
                        synchro=0xa0;
                }
                else
                {
                        synchro=0x50;
                }
                fwrite(f2,12,1,titBinFile);
        }
}

void CloseTitFile(void)
{
        char line[128];
        int i;
        firstFrame=1;
        if (titBinFile==NULL)
        {
                return;
        }
        fclose(titBinFile);
        titBinFile=NULL;
        for (i=0; i<MAX_CHANNEL; i++)
        {
                UpdateInfoHeader(i);
        }
        strcpy(line,FileName("", ".tit", 0, fileNameOptions&(~ADD_CHANNEL_CODE)));
        PrintLog("OUTPUT: %s\n",line);
        Rename(titBinFileName,line);
        unlink(titBinFileName);
        for (i=0; i<MAX_CHANNEL; i++)
        {
                infoHeader[i].uncorrected.usecond=0LL;
        }
}

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