gio.c

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#include "gio.h"
#include "jbxl_state.h"
 
 
IRBound  ExRBound;
 
 
// ファイル名によるI/Oサポート
 
int  write_wsg_file(const char* fname, WSGraph gr)
{
    CmnHead hd;
    unsigned int  i;
 
    hd.xsize = gr.xs;
    hd.ysize = gr.ys;
    hd.zsize = gr.zs;
    hd.depth = 16;
    hd.grptr = (uByte*)gr.gp;
    hd.kind  = CT_3DM;
 
    if (hd.zsize<=1){
        hd.zsize = 1;
        hd.kind  = CT_DATA;
    }
    hd.lsize = (hd.depth+7)/8*hd.zsize*hd.ysize*hd.zsize;
    hd.bsize = sizeof(CTHead);
    hd.buf   = (uByte*)malloc(hd.bsize);
    if (hd.buf==NULL) {
        //fprintf(stderr, "WRITE_FILE: no more memory!! %d\n", hd.bsize);
        return JBXL_GRAPH_MEMORY_ERROR;
    }
    for (i=0; i<hd.bsize; i++) *(hd.buf+i) = (sByte)0;
    int ret = write_ct_file(fname, &hd);
 
    free(hd.buf);
    return ret;
}
 
 
int  write_ras_file(const char* fname, WSGraph gr)
{
    CmnHead hd;
 
    init_CmnHead(&hd);
    hd.xsize = gr.xs;
    hd.ysize = gr.ys;
    hd.zsize = gr.zs;
    hd.depth = 16;
    hd.grptr = (uByte*)gr.gp;
 
    if (hd.zsize>1) {
        //fprintf(stderr,"WRITE_RAS_FILE: 3D SunRaster is not supported!!\n");
        return JBXL_GRAPH_HEADER_ERROR;
    }
    else {
        hd.zsize = Max(hd.zsize, 1);
        hd.kind  = CT_DATA;
        hd.lsize = (hd.depth+7)/8*hd.xsize*hd.ysize*hd.zsize;
        hd.bsize = sizeof(CTHead);
        hd.buf   = (uByte*)malloc(hd.bsize);
        if (hd.buf==NULL) {
            //fprintf(stderr,"WRITE_RAS_FILE: no more memory!! %d\n", hd.bsize);
            return JBXL_GRAPH_MEMORY_ERROR;
        }
        memset(hd.buf, 0, hd.bsize);
    }
 
    int ret = write_ras_file_obit(fname, &hd, 8);
 
    free(hd.buf);
    return ret;
}
 
 
int  write_file_rb(const char* fname, WSGraph gr, IRBound rb)
{
    CmnHead hd;
    CTHead* chd;
    unsigned int  i;
 
    init_CmnHead(&hd);
    hd.xsize = gr.xs;
    hd.ysize = gr.ys;
    hd.zsize = gr.zs;
    hd.depth = 16;
    hd.grptr = (uByte*)gr.gp;
    hd.kind  = CT_3DM | HAS_RBOUND;
 
    if (hd.zsize<=0) {
        hd.zsize = 1;
        hd.kind  = CT_DATA | HAS_RBOUND;
    }
    hd.lsize = (hd.depth+7)/8*hd.zsize*hd.ysize*hd.zsize;
    hd.bsize = sizeof(CTHead);
    hd.buf   = (uByte*)malloc(hd.bsize);
    if (hd.buf==NULL) {
        //fprintf(stderr, "WRITE_FILE_RB: no more memory!! %d\n", hd.bsize);
        return JBXL_GRAPH_MEMORY_ERROR;
    }
    for (i=0; i<hd.bsize; i++) *(hd.buf+i) = (sByte)0;
 
    chd = (CTHead*)hd.buf;
    chd->cutleft  = rb.xmin;
    chd->cutright = rb.xmax;
    chd->cutup    = rb.ymin;
    chd->cutdown  = rb.ymax;
    chd->ctmin    = rb.zmin;
    chd->ctmax    = rb.zmax;
 
    if (RZxy!=1.0 && RZxy<RZXY_RATE && chk_RZxy()) {
        chd->anydata[0] = (sWord)(RZxy*RZXY_RATE);
        chd->anydata[1] = (sWord)RZXY_RATE;
        hd.kind        |= HAS_RZXY;
    }       
            
    if (ZeroBase!=0) {
        chd->anydata[2] = (sWord)ZeroBase;
        hd.kind        |= HAS_BASE;
    }   
 
    int ret = write_ct_file(fname, &hd);
 
    free(hd.buf);
    return ret;
}
 
 
WSGraph  read_wsg_file(const char* fname)
{
    WSGraph  gr;
    CmnHead  hd;
    int  i, xs, ys, zs;
    double rzm;
    sWord* rz;
 
    memset(&gr, 0, sizeof(WSGraph));
 
    hd = read_xxx_file(fname);
    if (hd.kind==HEADER_NONE) {
        //fprintf(stderr,"READ_FILE: read file %s open error!!\n",fname);
        gr.state = JBXL_GRAPH_HEADER_ERROR;
        return gr;
    }
 
    if (checkBit(hd.kind, HAS_RBOUND)) {
        //fprintf(stderr,"read_wsg_file: this file %s has RBound data.\n",fname);
        //fprintf(stderr,"read_wsg_file: I call read_wsg_file_rb() function.\n");
        //fprintf(stderr,"read_wsg_file: RBound data is in ExRBound.\n");
        gr = read_wsg_file_rb(fname, &ExRBound);
        return gr;
    }
    
    xs = hd.xsize;
    ys = hd.ysize;
    zs = Max(hd.zsize, 1);
 
    if (hd.depth==16){
        gr.gp = (sWord*)hd.grptr;
    }
    else if (hd.depth<16){
        gr.gp = (sWord*)malloc(xs*ys*zs*sizeof(sWord));
        if (gr.gp==NULL) {
            //fprintf(stderr,"READ_FILE: no more memory! %d\n",xs*ys*zs*sizeof(sWord));
            free_CmnHead(&hd);
            gr.state = JBXL_GRAPH_MEMORY_ERROR;
            return gr;
        }
        for (i=0; i<xs*ys*zs; i++) gr.gp[i] = (uByte)hd.grptr[i];
        free(hd.grptr);
    }
    else if (hd.depth>16){
        gr.gp = (sWord*)malloc(xs*ys*zs*sizeof(sWord));
        if (gr.gp==NULL) {
            //fprintf(stderr,"READ_FILE: no more memory! %d\n",xs*ys*zs*sizeof(sWord));
            free_CmnHead(&hd);
            gr.state = JBXL_GRAPH_MEMORY_ERROR;
            return gr;
        }
        for (i=0;i<xs*ys*zs;i++) gr.gp[i]=(sWord)((uByte)hd.grptr[i]>>(hd.depth-15));
        free(hd.grptr);
    }
 
    gr.xs = xs;
    gr.ys = ys;
    gr.zs = zs;
    gr.state = JBXL_NORMAL;
 
    if (hd.bsize>0 && checkBit(hd.kind, CT_DATA)) {
        rz  = (sWord*)hd.buf;
        if (rz[9]==RZXY_RATE || checkBit(hd.kind, HAS_RZXY)) {
            rzm = (double)(rz[8])/rz[9];
            if (rzm<1.0 && rzm>0.1) set_RZxy(rzm);
            //else fprintf(stderr,"READ_FILE: RZxy = %f ?????\n",rzm);
        }
        if (rz[10]!=0 && checkBit(hd.kind, HAS_BASE)) {
            ZeroBase = rz[10];
        }
    }
    free(hd.buf);
 
    return  gr;
}
 
 
WSGraph  read_ras_file(const char* fn)
{
    int  i, sz;
    FILE *fp;
    CmnHead hd;
    WSGraph gd;
    size_t rs;
    UNUSED(rs);
 
    memset(&gd, 0, sizeof(WSGraph));
 
    if ((fp=fopen(fn,"rb"))==NULL) {
        //fprintf(stderr,"READ_RAS_FILE: read file open error!! %s\n",fn);
        gd.state = JBXL_GRAPH_OPFILE_ERROR;
        return gd;
    }
 
    rs = fread(&hd.entry, sizeof(CmnHead_Entry), 1, fp);
    ntoh_st(&hd.entry, 4);
    if (hd.kind!=RAS_MAGIC) {
        //fprintf(stderr,"READ_RAS_FILE: %s is not sunraster. kind = %d\n",fn,hd.kind);
        gd.state = JBXL_GRAPH_HEADER_ERROR;
        fclose(fp);
        return gd;
    }
 
    hd = read_ras_data(fp); 
    fclose(fp);
    if (hd.kind==HEADER_NONE) {
        free_CmnHead(&hd);
        gd.state = JBXL_GRAPH_HEADER_ERROR;
        return gd;
    }
 
    gd.xs = hd.xsize;
    gd.ys = hd.ysize;
    gd.zs = 1;
 
    sz  = gd.xs*gd.ys*gd.zs;
    gd.gp = (sWord*)malloc(sz*sizeof(sWord));
    if (gd.gp==NULL) {
        //fprintf(stderr,"READ_RAS_FILE: no more memory!! %d\n", sz);
        memset(&gd, 0, sizeof(WSGraph));
        gd.state = JBXL_GRAPH_MEMORY_ERROR;
        return gd;
    }
    for (i=0; i<sz; i++) gd.gp[i] = (uByte)hd.grptr[i];
    free_CmnHead(&hd);
 
    gd.state = JBXL_NORMAL;
    return gd;
}
 
 
WSGraph  read_wsg_file_rb(const char* fname, IRBound* rb)
{
    int  i, xs, ys, zs;
    double  rzm;
    WSGraph  gr;
    CmnHead  hd;
    CTHead*  chd;
    sWord* rz;
  
    memset(&gr, 0, sizeof(WSGraph));
 
    hd = read_xxx_file(fname);
    if (hd.kind==HEADER_NONE) {
        //fprintf(stderr,"READ_FILE_RB: read file %s open error!!\n",fname);
        //fprintf(stderr,"\n");
        gr.state = JBXL_GRAPH_OPFILE_ERROR;
        return gr;
    }
    
    xs = hd.xsize;
    ys = hd.ysize;
    zs = Max(hd.zsize, 1);
    rb->xmin = rb->ymin = rb->zmin = 0;
    rb->xmax = xs - 1;
    rb->ymax = ys - 1;
    rb->zmax = zs - 1;
 
    if (hd.depth==16){
        gr.gp = (sWord*)hd.grptr;
    }
    else if (hd.depth<16){
        gr.gp = (sWord*)malloc(xs*ys*zs*sizeof(sWord));
        if (gr.gp==NULL) {
            //fprintf(stderr,"READ_FILE_RB: no more memory! %d\n",xs*ys*zs*sizeof(sWord));
            gr.state = JBXL_GRAPH_MEMORY_ERROR;
            return gr;
        }
        for (i=0; i<xs*ys*zs; i++) gr.gp[i] = (uByte)hd.grptr[i];
        free(hd.grptr);
    }
    else if (hd.depth>16){
        gr.gp = (sWord*)malloc(xs*ys*zs*sizeof(sWord));
        if (gr.gp==NULL) { 
            //fprintf(stderr,"READ_FILE_RB: no more miemory! %d\n",xs*ys*zs*sizeof(sWord));
            gr.state = JBXL_GRAPH_MEMORY_ERROR;
            return gr;
        }
        for (i=0;i<xs*ys*zs;i++) gr.gp[i]=(sWord)((uByte)hd.grptr[i]>>(hd.depth-15));
        free(hd.grptr);
    }
 
    gr.xs = xs;
    gr.ys = ys;
    gr.zs = zs;
 
    if (hd.bsize>0 && checkBit(hd.kind, CT_DATA)) {
        if (checkBit(hd.kind, HAS_RBOUND)) {
            chd = (CTHead*)hd.buf;
            rb->xmin = chd->cutleft;
            rb->xmax = chd->cutright;
            rb->ymin = chd->cutup;
            rb->ymax = chd->cutdown;
            rb->zmin = chd->ctmin;
            rb->zmax = chd->ctmax;
        }
        rz  = (sWord*)hd.buf;
        if (rz[9]==RZXY_RATE || checkBit(hd.kind, HAS_RZXY)) {
            rzm = (double)(rz[8])/rz[9];
            if (rzm<1.0 && rzm>0.1) set_RZxy(rzm);
            //else fprintf(stderr,"READ_FILE_RB: RZxy = %f ?????\n",rzm);
        }
        if (rz[10]!=0 && checkBit(hd.kind, HAS_BASE)) {
            ZeroBase = rz[10];
        }
    }
    free(hd.buf);
 
    gr.state = JBXL_NORMAL;
    return gr;
}
 
 
 
// ファイル名と共通ヘッダによるI/Oサポート
 
int  write_ras_file_obit(const char* fn, CmnHead* hd, int obit)
{
    FILE *fp;
    RasHead shd;
    int  i, j, k, l, linebyte, databyte, depth, lsize;
    uByte null=0x00, *ptr, *buf;
 
    if ((fp=fopen(fn,"wb"))==NULL) return JBXL_GRAPH_OPFILE_ERROR;
    obit = Xabs(obit);
 
    if (hd->kind == RAS_DATA) {
        unsigned int u;
        memcpy((sByte*)&shd, hd->buf, hd->bsize);
        ptr = (uByte*)malloc(hd->lsize);
        if (ptr==NULL) {
            fclose(fp);
            return JBXL_GRAPH_MEMORY_ERROR;
        }
        lsize = hd->lsize;
        for (u=0; u<hd->lsize; u++) ptr[u] = hd->grptr[u];
    }
    else { // CT -> RAS 
        if (hd->depth==16) {
 
            if (obit==8) depth = 8;
            else         depth = 24;
 
            lsize = hd->xsize*hd->ysize*depth/8;
            buf = (uByte*)malloc(lsize);
            if (buf==NULL) {
                 fclose(fp);
                 return JBXL_GRAPH_MEMORY_ERROR;
            }
            memset(buf, 0, lsize);
 
            if (obit==8) {
                int  max = 255; // 8bit mode での最大値 
                uWord* wp = (uWord*)hd->grptr;
                for (i=0; i<hd->xsize*hd->ysize; i++) {
                    max = Max(max, wp[i]);
                }
                for (i=0; i<hd->ysize*hd->xsize; i++) {
                    buf[i] = 255*wp[i]/max;
                }
            }
            else {
                k = l = 0;
                for (i=0; i<hd->ysize*hd->xsize; i++) {
                    buf[k++] = hd->grptr[l++];
                    buf[k++] = hd->grptr[l++];
                    buf[k++] = null;
                }
            }
        }
        else {
            depth = hd->depth;
            lsize = hd->lsize;
            buf   = (uByte*)hd->grptr;
        }
 
        databyte = hd->xsize*depth/8;
        linebyte = lsize/hd->ysize;
        if (linebyte%2==1) {
            linebyte++;
            lsize = linebyte*hd->ysize;
        }
 
        shd.ras_magic    = RAS_MAGIC;
        shd.ras_width    = hd->xsize;
        shd.ras_height   = hd->ysize;
        shd.ras_depth    = depth;
        shd.ras_length   = lsize;
        shd.ras_type     = RT_STANDARD;
        shd.ras_maptype  = RMT_NONE;
        shd.ras_maplength= 0;
 
        ptr = (uByte*)malloc(lsize);
        if (ptr==NULL) {
            if (hd->depth==16) free(buf);
            fclose(fp);
            return JBXL_GRAPH_MEMORY_ERROR;
        }
        memset(ptr, 0, lsize);
 
        k = l = 0;
        for (i=0 ; i<hd->ysize; i++) {
            for (j=0; j<databyte; j++)          ptr[k++] = buf[l++];
            for (j=0; j<linebyte-databyte; j++) ptr[k++] = null;
        }
 
        if (hd->depth==16) free(buf);
    }
 
    hton_st(&shd, 4);
    fwrite(&shd, sizeof(RasHead), 1, fp);
    fwrite(ptr, lsize, 1, fp);
 
    fclose(fp);
    free(ptr);
    return  0;
}
 
 
int  write_ct_file(const char* fn, CmnHead* hd)
{
    CTHead  chd;
    CmnHead cmd;
    FILE*  fp;
    sByte* ptr;
    sWord* wp;
    sByte  null=0x00;
    int i, j, k, l, lsize;
    int dbyte=2;   //  sWord TYPE data 
 
    if ((fp=fopen(fn,"wb"))==NULL) return JBXL_GRAPH_OPFILE_ERROR;
 
    hd->zsize = Max(hd->zsize, 1); 
    lsize = hd->xsize*hd->ysize*hd->zsize*dbyte;
    hd->lsize = lsize;
    ptr = (sByte*)malloc(lsize);
    if (ptr==NULL) {
        fclose(fp);
        return JBXL_GRAPH_MEMORY_ERROR;
    }
    memset(ptr, 0, lsize);
 
    if (checkBit(hd->kind, CT_DATA) || checkBit(hd->kind, CT_3DM)) {
        memcpy((sByte*)&chd, hd->buf, hd->bsize);
        hton_st(&chd, 2);
        chd.xsize = htons((sWord)hd->xsize);
        chd.ysize = htons((sWord)hd->ysize);
        for(i=0; i<lsize; i++) ptr[i] = hd->grptr[i];
    }
    else { // ANY DATA -> CT_DATA 
        chd.xsize   = htons((sWord)hd->xsize);
        chd.ysize   = htons((sWord)hd->ysize);
        chd.ctmin   = 0;
        chd.ctmax   = 0;
        chd.cutup   = 0;
        chd.cutdown = 0;
        chd.cutleft = 0;
        chd.cutright= 0;
 
        k = l = 0;
        if (hd->depth < dbyte*8){   
            for (i=0; i<hd->xsize*hd->ysize; i++) {
                for (j=0; j<hd->depth/8; j++) ptr[k++] = null;
                for (j=hd->depth/8; j<dbyte; j++) 
                ptr[k++] = hd->grptr[l++];
            }
        }
        else if (hd->depth == dbyte*8) {
            for (i=0; i<hd->xsize*hd->ysize; i++) {
                for (j=0; j<dbyte; j++) ptr[k++] = hd->grptr[l++];
            }
        }
        else {
            for (i=0; i<hd->xsize*hd->ysize; i++) {
                for (j=0; j<dbyte; j++) ptr[k++] = hd->grptr[l++];
                l += (hd->depth)/8 - dbyte;
            }
        }
     
    }
 
    if (RZxy!=1.0 && RZxy<RZXY_RATE && chk_RZxy()) {
        chd.anydata[0] = htons((sWord)(RZxy*RZXY_RATE));
        chd.anydata[1] = htons((sWord)RZXY_RATE);
        hd->kind |= HAS_RZXY;
    }
 
    if (ZeroBase!=0) {
        chd.anydata[2] = htons((sWord)ZeroBase);
        hd->kind |= HAS_BASE;
    }
 
    fseek(fp, 0, 0);
    if (checkBit(hd->kind, CT_3DM)) {
        cmd = *hd;
        hton_st(&cmd.entry, 4);
        fwrite(&cmd.entry, sizeof(CmnHead_Entry), 1, fp);
    }
    fwrite(&chd, sizeof(CTHead), 1, fp);
 
    wp = (sWord*)ptr;
    hton_ar(wp, lsize);
    fwrite(ptr, lsize, 1, fp);
 
    fclose(fp);
    free(ptr);
    
    return  0;
}
 
 
int  write_cmn_file(const char* fn, CmnHead* hd)
{
    FILE*   fp;
    CmnHead cd;
 
    if ((fp=fopen(fn,"wb"))==NULL) return JBXL_GRAPH_OPFILE_ERROR;
 
    cd = *hd;
    hton_st(&cd.entry, 4);
    fwrite(&cd.entry, sizeof(CmnHead_Entry), 1, fp);
    if (hd->bsize>0) fwrite(hd->buf, hd->bsize, 1, fp);
    if (hd->lsize>0) fwrite(hd->grptr, hd->lsize, 1, fp);
 
    fclose(fp);
    return 0;
}
 
 
CmnHead  read_xxx_file(const char* fn)
{
    FILE* fp;
    int   i;
    sWord*  wptr;
    CmnHead hd;
    size_t rs;
    UNUSED(rs);
 
    init_CmnHead(&hd);
 
    int fsz = file_size(fn);
    if ((fp=fopen(fn,"rb"))==NULL) {
        hd.xsize = JBXL_GRAPH_OPFILE_ERROR;
        return hd;
    }
 
    int hsz = sizeof(CmnHead_Entry);
    fseek(fp,0,0);
    rs = fread(&hd.entry, hsz, 1, fp);
    ntoh_st(&hd.entry, 4);
    hd.buf = NULL;
    hd.grptr = NULL;
 
    if (hd.kind>=0 && hd.kind<=NUM_KDATA) { 
        hd.zsize = Max(hd.zsize, 1);
 
        if (fsz == (int)(hsz + hd.bsize + hd.lsize) + 4 ) hsz = 36;     // x86 file
        if (fsz == (int)(hsz + hd.bsize + hd.lsize) + 16) hsz = 48;     // x64 file
        //
        if (fsz == (int)(hsz + hd.bsize + hd.lsize)) {
            fseek(fp, hsz, 0);
            hd.buf   = (uByte*)malloc(hd.bsize);
            hd.grptr = (uByte*)malloc(hd.lsize);
            if ((hd.bsize>0 && hd.buf==NULL) || hd.grptr==NULL) {
                init_CmnHead(&hd);
                hd.xsize = JBXL_GRAPH_HEADER_ERROR;
                fclose(fp);
                return hd;
            }
            memset(hd.buf,   0, hd.bsize);
            memset(hd.grptr, 0, hd.lsize);
 
            rs = fread(hd.buf, hd.bsize, 1, fp);
            wptr = (sWord*)hd.buf;
            ntoh_ar(wptr, hd.bsize);
 
            rs = fread(hd.grptr, hd.lsize, 1, fp);
            if (hd.depth==16) {
                wptr = (sWord*)hd.grptr;
                for(i=0; i<hd.xsize*hd.ysize*hd.zsize; i++) wptr[i] = ntohs(wptr[i]);
            }
            fclose(fp);
            return hd;
        }
    }
 
    if (hd.kind==RAS_MAGIC) {
        hd = read_ras_data(fp); 
        fclose(fp);
        return hd;
    }
    
    hd = read_ct_data(fp);
    if (fsz != (int)(hd.lsize+hd.bsize)) {
        hd.xsize = hd.ysize = hd.depth = 0;
        hd = read_user_data(fp, &hd);
    }
 
    fclose(fp);
    return hd;
}
 
 
CmnHead  read_cmn_header(const char* fn)
{
    FILE*   fp;
    CmnHead hd;
    size_t rs;
    UNUSED(rs);
 
    init_CmnHead(&hd);
    int fsz = file_size(fn);
 
    if ((fp=fopen(fn,"rb"))==NULL) {
        hd.xsize = JBXL_GRAPH_OPFILE_ERROR;
        return hd;
    }
 
    int hsz = sizeof(CmnHead_Entry);
    fseek(fp, 0, 0);
    rs = fread(&hd.entry, hsz, 1, fp);
    ntoh_st(&hd.entry, 4);
    hd.buf = NULL;
    hd.grptr = NULL;
 
    if (fsz == (int)(hsz + hd.bsize + hd.lsize) + 4 ) hsz = 36;     // x86 file
    if (fsz == (int)(hsz + hd.bsize + hd.lsize) + 16) hsz = 48;     // x64 file
    fseek(fp, hsz, 0);
 
    if (hd.bsize>0) {
        hd.buf = (uByte*)malloc(hd.bsize);
        if (hd.buf==NULL) {
            init_CmnHead(&hd);
            hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
            fclose(fp);
            return hd;
        }
        memset(hd.buf, 0, hd.bsize);
        rs = fread(hd.buf, hd.bsize, 1, fp);
    }
    else  {
        hd.bsize = 0;
        hd.buf = NULL;
    }
 
    fclose(fp);
    return hd;
}
 
 
CmnHead  read_cmn_file(const char* fn)
{
    FILE*   fp;
    CmnHead hd;
    size_t rs;
    UNUSED(rs);
 
    init_CmnHead(&hd);
    int fsz = file_size(fn);
 
    if ((fp=fopen(fn,"rb"))==NULL) {
        hd.xsize = JBXL_GRAPH_OPFILE_ERROR;
        return hd;
    }
    
    int hsz = sizeof(CmnHead_Entry);
    fseek(fp, 0, 0);
    rs = fread(&hd.entry, hsz, 1, fp);
    ntoh_st(&hd.entry, 4);
    hd.buf = NULL;
    hd.grptr = NULL;
 
    if (fsz == (int)(hsz + hd.bsize + hd.lsize) + 4 ) hsz = 36;     // x86 file
    if (fsz == (int)(hsz + hd.bsize + hd.lsize) + 16) hsz = 48;     // x64 file
    fseek(fp, hsz, 0);
 
    if (hd.bsize>0) {
        hd.buf = (uByte*)malloc(hd.bsize);
        if (hd.buf==NULL) {
            init_CmnHead(&hd);
            hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
            fclose(fp);
            return hd;
        }
        memset(hd.buf, 0, hd.bsize);
        rs = fread(hd.buf, hd.bsize, 1, fp);
    }
    else  {
        hd.bsize = 0;
        hd.buf = NULL;
    }
 
    if (hd.lsize<=0) hd.lsize = file_size(fn) - hsz - hd.bsize;
    hd.grptr = (uByte*)malloc(hd.lsize);
    if (hd.grptr==NULL) {
        free_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        fclose(fp);
        return hd;
    }
    memset(hd.grptr, 0, hd.lsize);
    rs = fread(hd.grptr, hd.lsize, 1, fp);
 
    fclose(fp);
    return hd;
}
 
 
 
// ファイル識別子と共通ヘッダによるI/Oサポート
 
CmnHead  read_user_data(FILE* fp, CmnHead* chd)
{
    int  i;
    CmnHead hd;
    size_t rs;
    UNUSED(rs);
 
    init_CmnHead(&hd);
 
    if (chd==NULL) {
        hd.xsize = JBXL_GRAPH_HEADER_ERROR;
        return hd;
    }
    else if (!checkBit(chd->kind, USERSET_DATA)) {
        hd.xsize = JBXL_GRAPH_HEADER_ERROR;
        return hd;
    }
    hd = *chd;
 
    // ヘッダ読み込み
    fseek(fp, 0, 0);
    hd.buf = (uByte*)malloc(hd.bsize);
    if (hd.buf==NULL) {
        init_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        return hd;
    }
    memset(hd.buf, 0, hd.bsize);
    rs = fread((void*)hd.buf, hd.bsize, 1, fp);
 
    hd.grptr = (uByte*)malloc(hd.lsize);
    if (hd.grptr==NULL) {
        free_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        return hd;
    }
    memset(hd.grptr, 0, hd.lsize);
 
    fseek(fp, hd.bsize, 0);
    rs = fread(hd.grptr, hd.lsize, 1, fp);
    //int psize = hd.xsize*hd.ysize*((hd.depth+7)/8);
    //for (int i=0; i<hd.zsize; i++) {
    //    rs = fread(hd.grptr+i*psize, psize, 1, fp);
    //}
 
    if (is_little_endian()) {
        if (hd.depth==16 && !checkBit(chd->kind, HAS_LENDIAN)) {
            sWord* wptr = (sWord*)hd.grptr;
            for (i=0; i<hd.xsize*hd.ysize*hd.zsize; i++) wptr[i] = ntohs(wptr[i]);
        }
    }
    else {
        if (hd.depth==16 && checkBit(chd->kind, HAS_LENDIAN)) {
            uWord* wptr = (uWord*)hd.grptr;
            for (i=0; i<hd.xsize*hd.ysize*hd.zsize; i++) wptr[i] = swaps(wptr[i]);
        }
    }
 
    return hd;
}
 
 
CmnHead  read_ras_data(FILE* fp)
{
    RasHead rhd;
    CmnHead  hd;
    int  i, linebyte, databyte;
    uByte null[2], *buf;
    sWord* wptr;
    size_t rs;
    UNUSED(rs);
 
    init_CmnHead(&hd);
    hd.kind  = RAS_DATA;
    hd.bsize = 32;
 
    fseek(fp, 0, 0);
    rs = fread(&rhd, hd.bsize, 1, fp);
    ntoh_st(&rhd, 4);
 
    hd.xsize = rhd.ras_width;
    hd.ysize = rhd.ras_height;
    hd.zsize = 1;
    hd.depth = rhd.ras_depth;
    hd.lsize = hd.xsize*hd.ysize*((hd.depth+7)/8);
    hd.buf   = (uByte*)malloc(hd.bsize);
    if (hd.buf==NULL) {
        init_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        return hd;
    }
    memcpy(hd.buf, (uByte*)&rhd, hd.bsize);
 
    hd.grptr = (uByte*)malloc(hd.lsize);
    if (hd.grptr==NULL) {
        free_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        return hd;
    }
    memset(hd.grptr, 0, hd.lsize);
    buf = (uByte*)hd.grptr;
 
    fseek(fp, rhd.ras_maplength, 1); 
 
    databyte = hd.xsize*((hd.depth+7)/8);
    linebyte = rhd.ras_length/hd.ysize;
 
    if (databyte==linebyte) {
        rs = fread(buf, hd.lsize, 1, fp);
    }
    else {
        for (i=0; i<hd.ysize; i++) {
            rs = fread(buf, databyte, 1, fp);
            rs = fread(null, linebyte-databyte, 1, fp);
            buf += databyte;
        }
    }
 
    if (hd.depth==16){
        wptr = (sWord*)hd.grptr;
        for(i=0; i<hd.xsize*hd.ysize; i++) wptr[i] = ntohs(wptr[i]);
    }
 
    return hd;
}
 
 
CmnHead  read_ct_data(FILE* fp)
{
    int i;
    CTHead chd;
    CmnHead hd;
    sWord *wptr;
    size_t rs;
    UNUSED(rs);
 
    init_CmnHead(&hd);
 
    // ヘッダ読み込み
    fseek(fp, 0, 0);
    hd.bsize = 64;
    rs = fread((void*)&chd, hd.bsize, 1, fp);
    ntoh_st(&chd, 2);
 
    hd.xsize = chd.xsize - chd.cutleft - chd.cutright;
    hd.ysize = chd.ysize - chd.cutup   - chd.cutdown;
    hd.zsize = 1;
    hd.depth = 16;
    hd.lsize = hd.xsize*hd.ysize*(hd.depth/8);
 
    hd.buf   = (uByte*)malloc(hd.bsize);
    if (hd.buf==NULL) {
        init_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        return hd;
    }
    hd.kind  = CT_DATA;
    memcpy(hd.buf, &chd, hd.bsize);
 
    hd.grptr = (uByte*)malloc(hd.lsize);
    if (hd.grptr==NULL) {
        free_CmnHead(&hd);
        hd.xsize = JBXL_GRAPH_MEMORY_ERROR;
        return hd;
    }
    memset(hd.grptr, 0, hd.lsize);
 
    fseek(fp, hd.bsize, 0);
    rs = fread(hd.grptr, hd.lsize, 1, fp);
 
    wptr = (sWord*)hd.grptr;
    for (i=0; i<hd.xsize*hd.ysize; i++) wptr[i] = ntohs(wptr[i]);
 
    return hd;
}
 
 
 
// DICOM
 
int  dicom_header(FILE* fp, int fsize, int* dsize, int* xsize, int* ysize, int* depth, double* rzxy)
{
    int    i, j, sz, rp, ef;
    int    ln, hsize;
    int    xs = 0, ys = 0, dp = 0;
    double rz = 0.0;
 
    uWord  dt, cn[2];
    uWord* wp;
 
    if (fp==NULL || fsize<=0 || dsize==NULL) return JBXL_GRAPH_IVDARG_ERROR;
 
    *dsize = 0;
    if (rzxy!=NULL) *rzxy = 0.0;
    ef = OFF;
    fseek(fp, 0, 0);
 
    // ヘッダの区切りを検出
    rp = (int)fread(&dt, sizeof(uWord), 1, fp);
    while(!feof(fp) && ef!=ON) {
        //if ((uWord)ntohs(dt)==0xe07f) {
        if (dt==DICOM_PIXEL_GROUP) {
            rp += (int)fread(&dt, sizeof(uWord), 1, fp);
            //if ((uWord)ntohs(dt)==0x1000) {
            if (dt==DICOM_PIXEL_ELEMENT) {
                rp += (int)fread(&cn, sizeof(uWord), 2, fp);
                //if ((uWord)ntohs(cn[0])==0x4f57 && cn[1]==0x0000) {
                if (cn[0]==DICOM_PIXCEL_VR && cn[1]==0x0000) {
                    rp += (int)fread(&cn, sizeof(uWord), 2, fp);
                    *dsize = *(int*)cn;
                    hsize = rp*sizeof(uWord);
                    if (fsize>=*dsize+hsize) {      // footer
                        ef = ON;
                        break;
                    }
                }
                else {
                    *dsize = *(int*)cn;
                    hsize = rp*sizeof(uWord);
                    if (fsize>=*dsize+hsize) {      // footer
                        ef = ON;
                        break;
                    }
                }
            }
        }
        rp += (int)fread(&dt, sizeof(uWord), 1, fp);
    }
 
    if (!ef) return 0;
 
    sz = rp*sizeof(uWord);
    wp = (uWord*)malloc(sz);
    if (wp==NULL) return JBXL_GRAPH_MEMORY_ERROR;
    memset(wp, 0, sz);
 
    // ヘッダ読み込み
    size_t rs;
    UNUSED(rs);
 
    fseek(fp, 0, 0);
    rs = fread(wp, sz, 1, fp);
 
    for (i=0; i<sz/2-3; i++) {
        //if ((uWord)ntohs(wp[i])==0x2800 && (uWord)ntohs(wp[i+1])==0x3000) {
        if (wp[i]==DICOM_IMAGE_GROUP) {
 
            // Z方向の歪
            if (wp[i+1]==DICOM_PXLSPC_ELEMENT) {
                char   rx[LNAME], ry[LNAME];
                uByte* bp;
 
                memset(rx, 0, LNAME);
                memset(ry, 0, LNAME);
 
                if (wp[i+2]==DICOM_STR_VR) ln = wp[i+3];
                else                       ln = *(int*)&wp[i+2];
 
                if (ln<LNAME-1) {
                    bp = (uByte*)&wp[i+4];
                    j  = 0;
                    while (j<ln-1 && bp[j]!='\\') {
                        rx[j] = bp[j];
                        j++;
                    }
                    ln -= j + 1;
                    bp += j + 1;
                    j   = 0;
                    while (j<ln-1 && bp[j]!=' ') {
                        ry[j] = bp[j];
                        j++;
                    }
                    if (!strcmp(rx, ry)) {
                        rz = atof(rx);
                    } 
                }
            }
 
            // X サイズ
            else if (wp[i+1]==DICOM_XSIZE_ELEMENT) {
                if (wp[i+2]==DICOM_INT_VR) ln = wp[i+3];
                else                       ln = *(int*)&wp[i+2];
                if (ln==2) {
                    xs = (int)*(sWord*)&wp[i+4];
                }
                else if (ln==4) {
                    xs = *(int*)&wp[i+4];
                }
            }
 
            // Y サイズ
            else if (wp[i+1]==DICOM_YSIZE_ELEMENT) {
                if (wp[i+2]==DICOM_INT_VR) ln = wp[i+3];
                else                       ln = *(int*)&wp[i+2];
                if (ln==2) {
                    ys = (int)*(sWord*)&wp[i+4];
                }
                else if (ln==4) {
                    ys = *(int*)&wp[i+4];
                }
            }
 
            // Depth
            else if (wp[i+1]==DICOM_DEPTH_ELEMENT) {
                if (wp[i+2]==DICOM_INT_VR) ln = wp[i+3];
                else                       ln = *(int*)&wp[i+2];
                if (ln==2) {
                    dp = (int)*(sWord*)&wp[i+4];
                }
                else if (ln==4) {
                    dp = *(int*)&wp[i+4];
                }
            }
        }
    }
    free(wp);
    
    if (rzxy!=NULL)  *rzxy  = rz;
    if (xsize!=NULL) *xsize = xs;
    if (ysize!=NULL) *ysize = ys;
    if (depth!=NULL) *depth = dp;
    
    return sz;
}
 
 
WSGraph  read_dicom_file(const char* fn)
{
    int  sz, fsize, dsize, xsize, ysize, depth;
    double rzxy;
    FILE*  fp;
    size_t rs;
    UNUSED(rs);
 
    WSGraph vp;
 
    memset(&vp, 0, sizeof(WSGraph));
 
    fsize = file_size(fn);
    if (fsize<=0) {
        vp.state = JBXL_GRAPH_NOFILE_ERROR;
        return vp;
    }
 
    if ((fp=fopen(fn,"rb"))==NULL) {
        vp.state = JBXL_GRAPH_OPFILE_ERROR;
        return vp;
    }
 
    sz = dicom_header(fp, fsize, &dsize, &xsize, &ysize, &depth, &rzxy);
    if (sz<=0) {
        fclose(fp);
        vp.state = JBXL_GRAPH_HEADER_ERROR;
        return vp;
    }
 
    DEBUG_MODE PRINT_MESG("read_dicom_file: xsize = %d, ysize = %d, depth = %d, RZxy = %f\n", xsize, ysize, depth, rzxy);
 
    // Read Data
    if (dsize!=xsize*ysize*((depth+7)/8)) {
        unset_RZxy();
        fclose(fp);
        vp.state = JBXL_GRAPH_HEADER_ERROR;
        return vp;
    }
 
    if ((depth+7)/8!=2) {
        unset_RZxy();
        fclose(fp);
        vp.state = JBXL_GRAPH_HEADER_ERROR;
        return vp;
    }
 
    vp = make_WSGraph(xsize, ysize, 1);
    if (vp.gp==NULL) {
        vp.state = JBXL_GRAPH_MEMORY_ERROR;
        return vp;
    }
 
    fseek(fp, sz, 0);
    rs = fread(vp.gp, dsize, 1, fp);
    fclose(fp);
 
    if (rzxy>0.0) set_RZxy(rzxy);   
    vp.state = JBXL_NORMAL;
    return vp;
}