titan1.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
 *
 */

/*
   specific function to process auxilliary files from titan disks
   */

#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 <signal.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/resource.h>

#include "common.h"


struct IndexType {
        struct Titan2TimeType t;
        int type;
        int channel;
        int toDisk;
        int32_t flashCycleBegin;
        int32_t beginAddress;
        int32_t flashCycleEnd;
        int32_t endAddress;
        int32_t duration;
        int32_t max0;
        int32_t max1;
        int32_t max2;
};

int32_t lastDataOffset=-1;
int32_t lastIndexOffset=1<<31;

void ReadSize(char *fsize)
{
        FILE *f;
        char od[512];
        int i;
        // open the size.siz file
        f=fopen(fsize,"rb");
        lastDataOffset=0;
        lastIndexOffset=0;
        if (f!=NULL)
        {
                // read the offset for the last data
                if (fread(od, 512, 1, f)==1)
                {
                        for (i=0; i<4; i++)
                        {
                                lastDataOffset+=((od[i]&0xff)<<(8*i));
                                lastIndexOffset+=((od[4+i]&0xff)<<(8*i));
                        }
                        PrintLog("End of data at offset %d\n",lastDataOffset);
                        PrintLog("End of index at offset %d\n",lastIndexOffset);
                }
                else
                {
                        PrintError("could not read %s: %m\n",fsize);
                        exit(0);
                }
                fclose(f);
        }
        else
        {
                PrintError("could not open %s: %m\n",fsize);
                exit(0);
        }
}

void CutDataFile(char *fdata)
{
        FILE *f;
        char buffer[4096];
        int done;
        done=0;
        // open the data file
        PrintLog("Extracting %dMb\n",lastDataOffset/1024/1024);
        f=fopen(fdata,"rb");
        if (f!=NULL)
        {
                // read 4k blocks and dump up to the last offset
                while ((done<lastDataOffset)&&(fread(buffer,4096,1,f)==1))
                {
                        fwrite(buffer,4096,1,stdout);
                        done+=4096;
                        if ((done%10485760)==0)
                        {
                                PrintLog("%4dMb done...\n",done/1024/1024);
                        }
                }
                fclose(f);
        }
        else
        {
                PrintError("could not open %s: %m\n",fdata);
                exit(0);
        }
}


int UpdateIndex(struct IndexType *ndx, char *index)
{
        memset(ndx,0,sizeof(struct IndexType));
        ndx->t.usecond=frame2i32_64(index,0)<<32;
        if (ndx->t.usecond<=0)
        {
                return(-1);
        }
        ndx->type=index[5]&0xff;
        // analyse the index
        switch (ndx->type)
        {
                case 0:
                        // fill the index structure
                        ndx->channel=index[4]&0x7f;
                        if (index[4]&0x80)
                        {
                                ndx->toDisk=1;
                        }
                        if (frame2i32(index,16)==0)
                        {
                                ndx->flashCycleBegin=-1;
                                ndx->endAddress=-1;
                                ndx->flashCycleEnd=-1;
                                ndx->beginAddress=frame2i32(index,12);
                                // discard negative index
                                if (ndx->beginAddress<0)
                                {
                                        return(-1);
                                }
                                PrintLog("%s %2d %10d %s\n",
                                                StrTimeNS(&(ndx->t)),
                                                ndx->channel,
                                                ndx->beginAddress,
                                                ndx->toDisk?"normal":"todisk");

                        }
                        else
                        {
                                ndx->flashCycleBegin=index[12]&0xff;
                                ndx->beginAddress=frame2i24(index,13);
                                ndx->flashCycleEnd=index[8]&0xff;
                                ndx->endAddress=frame2i24(index,9);

                                ndx->duration=frame2i24(index,20);
                                ndx->max0=frame2i24(index,23);
                                ndx->max1=frame2i24(index,26);
                                ndx->max2=frame2i24(index,29);
                                // discard negative index
                                if (ndx->beginAddress<0)
                                {
                                        return(-1);
                                }
                                if (ndx->endAddress<0)
                                {
                                        return(-1);
                                }
                                PrintLog("%s %2d "
                                                " %2d %10d"
                                                " %2d %10d"
                                                " %s "
                                                " %5d"
                                                " %6d %6d %6d\n",
                                                StrTimeNS(&(ndx->t)),
                                                ndx->channel,
                                                ndx->flashCycleBegin,
                                                ndx->beginAddress,
                                                ndx->flashCycleEnd,
                                                ndx->endAddress,
                                                ndx->toDisk?"normal":"todisk",
                                                ndx->duration,
                                                ndx->max0,
                                                ndx->max1,
                                                ndx->max2);
                        }
                        // now dump the content
                        break;
                case 1:
                        ndx->beginAddress=frame2i32(index,12);
                        // discard negative index
                        if (ndx->beginAddress<0)
                        {
                                return(-1);
                        }
                        PrintLog("%s    %10d\n",
                                        StrTimeNS(&(ndx->t)),
                                        ndx->beginAddress);

                        break;
                case 2:
                        break;
                case 3:
                        break;
                default:
                        return(-1);
        }
        return(ndx->type);
}

void ReadIndex(char *fndx)
{
        FILE *f;
        char index[32];
        // index data
        struct IndexType indexInfo;
        // open the file
        f=fopen(fndx,"rb");
        if (f!=NULL)
        {
                // read the file up to the end
                while ((fread(index,32,1,f)==1)&&(ftell(f)<lastIndexOffset))
                {
                        // fill the ndx->structure
                        if (UpdateIndex(&indexInfo,index)==-1)
                        {
                                continue;
                        }

                        // now do something with the data

                        // if we want to generate a time
                        // list file, do it:
                        if (ndx2tl)
                        {
                        }
                        // if we want to generate a
                        // cache file, do it
                        if (ndx2cache)
                        {
                        }
                }
        }
        // process error
        else
        {
                PrintError("could not open %s: %m\n",fndx);
        }
}

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