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#ifndef lint |
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static const char RCSid[] = "$Id: meta2tga.c,v 1.8 2019/11/18 22:12:32 greg Exp $"; |
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#endif |
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/* |
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* Program to convert meta-files to Targa 8-bit color-mapped format |
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*/ |
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|
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#include "copyright.h" |
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|
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#include "rtprocess.h" |
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#include "meta.h" |
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#include "plot.h" |
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#include "rast.h" |
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#include "targa.h" |
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|
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#define MAXALLOC 100000 |
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#define DXSIZE 400 /* default x resolution */ |
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#define DYSIZE 400 /* default y resolution */ |
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#define XCOM "pexpand +vOCImsp -DP %s | psort +y" |
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|
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|
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char *progname; |
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|
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SCANBLOCK outblock; |
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|
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int dxsiz = DXSIZE, dysiz = DYSIZE; |
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|
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int maxalloc = MAXALLOC; |
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|
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int ydown = 0; |
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|
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static char outname[64]; |
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static char *outtack = NULL; |
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|
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static FILE *fout; |
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|
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static int lineno = 0; |
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|
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static short condonly = FALSE, |
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conditioned = FALSE; |
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|
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static int putthead(struct hdStruct *hp, char *ip, FILE *fp); |
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|
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|
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|
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char * |
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findtack(char *s) /* find place to tack on suffix */ |
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{ |
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while (*s && *s != '.') |
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s++; |
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return(s); |
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} |
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|
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|
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int |
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main( |
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int argc, |
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char **argv |
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) |
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{ |
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FILE *fp; |
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char comargs[200], command[300]; |
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|
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fout = stdout; |
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progname = *argv++; |
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argc--; |
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|
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condonly = FALSE; |
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conditioned = FALSE; |
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|
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while (argc && **argv == '-') { |
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switch (*(*argv+1)) { |
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case 'c': |
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condonly = TRUE; |
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break; |
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case 'r': |
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conditioned = TRUE; |
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break; |
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case 'm': |
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minwidth = atoi(*++argv); |
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argc--; |
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break; |
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case 'x': |
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dxsiz = atoi(*++argv); |
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argc--; |
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break; |
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case 'y': |
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dysiz = atoi(*++argv); |
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argc--; |
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break; |
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case 'o': |
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strcpy(outname, *++argv); |
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outtack = findtack(outname); |
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argc--; |
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break; |
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default: |
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error(WARNING, "unknown option"); |
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break; |
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} |
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argv++; |
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argc--; |
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} |
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|
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if (conditioned) { |
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if (argc) |
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while (argc) { |
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fp = efopen(*argv, "r"); |
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plot(fp); |
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fclose(fp); |
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argv++; |
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argc--; |
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} |
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else |
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plot(stdin); |
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if (lineno) |
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nextpage(); |
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} else { |
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comargs[0] = '\0'; |
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while (argc) { |
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strcat(comargs, " "); |
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strcat(comargs, *argv); |
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argv++; |
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argc--; |
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} |
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sprintf(command, XCOM, comargs); |
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if (condonly) |
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return(system(command)); |
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else { |
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if ((fp = popen(command, "r")) == NULL) |
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error(SYSTEM, "cannot execute input filter"); |
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plot(fp); |
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pclose(fp); |
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if (lineno) |
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nextpage(); |
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} |
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} |
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|
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return(0); |
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} |
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|
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|
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void |
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thispage(void) /* rewind current file */ |
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{ |
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if (lineno) |
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error(USER, "cannot restart page in thispage"); |
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} |
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|
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|
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void |
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initfile(void) /* initialize this file */ |
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{ |
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static const unsigned char cmap[24] = {0,0,0, 0,0,255, 0,188,0, 255,152,0, |
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0,200,200, 255,0,255, 179,179,0, 255,255,255}; |
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static int filenum = 0; |
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struct hdStruct thead; |
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int i; |
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|
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if (outtack != NULL) { |
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sprintf(outtack, "%d.tga", ++filenum); |
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fout = efopen(outname, "w"); |
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} |
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if (fout == NULL) |
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error(USER, "no output file"); |
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thead.mapType = CM_HASMAP; |
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thead.dataType = IM_CCMAP; |
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thead.mapOrig = 0; |
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thead.mapLength = 256; |
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thead.CMapBits = 24; |
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thead.XOffset = 0; |
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thead.YOffset = 0; |
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thead.x = dxsiz; |
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thead.y = dysiz; |
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thead.dataBits = 8; |
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thead.imType = 0; |
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putthead(&thead, NULL, fout); |
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for (i = 0; i < 8*3; i++) |
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putc(cmap[i], fout); |
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while (i++ < 256*3) |
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putc(0, fout); |
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} |
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|
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|
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void |
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nextpage(void) /* advance to next page */ |
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{ |
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|
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if (lineno == 0) |
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return; |
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if (fout != NULL) { |
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while (lineno < dysiz) { |
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nextblock(); |
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outputblock(); |
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} |
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fclose(fout); |
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fout = NULL; |
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} |
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lineno = 0; |
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|
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} |
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|
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|
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#define MINRUN 4 |
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|
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void |
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printblock(void) /* output scanline block to file */ |
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{ |
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int i, c2; |
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unsigned char *scanline; |
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int j, beg, cnt = 0; |
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|
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if (lineno == 0) |
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initfile(); |
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for (i = outblock.ybot; i <= outblock.ytop && i < dysiz; i++) { |
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scanline = outblock.cols[i-outblock.ybot]; |
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for (j = outblock.xleft; j <= outblock.xright; j += cnt) { |
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for (beg = j; beg <= outblock.xright; beg += cnt) { |
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for (cnt = 1; cnt < 128 && beg+cnt <= outblock.xright && |
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scanline[beg+cnt] == scanline[beg]; cnt++) |
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; |
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if (cnt >= MINRUN) |
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break; /* long enough */ |
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} |
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while (j < beg) { /* write out non-run */ |
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if ((c2 = beg-j) > 128) c2 = 128; |
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putc(c2-1, fout); |
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while (c2--) |
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putc(scanline[j++], fout); |
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} |
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if (cnt >= MINRUN) { /* write out run */ |
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putc(127+cnt, fout); |
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putc(scanline[beg], fout); |
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} else |
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cnt = 0; |
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} |
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lineno++; |
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} |
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|
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} |
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|
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|
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void |
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putint2( /* put a 2-byte positive integer */ |
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int i, |
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FILE *fp |
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) |
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{ |
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putc(i&0xff, fp); |
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putc(i>>8&0xff, fp); |
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} |
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|
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|
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int |
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putthead( /* write header to output */ |
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struct hdStruct *hp, |
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char *ip, |
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FILE *fp |
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) |
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{ |
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if (ip != NULL) |
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putc(strlen(ip), fp); |
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else |
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putc(0, fp); |
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putc(hp->mapType, fp); |
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putc(hp->dataType, fp); |
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putint2(hp->mapOrig, fp); |
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putint2(hp->mapLength, fp); |
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putc(hp->CMapBits, fp); |
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putint2(hp->XOffset, fp); |
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putint2(hp->YOffset, fp); |
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putint2(hp->x, fp); |
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putint2(hp->y, fp); |
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putc(hp->dataBits, fp); |
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putc(hp->imType, fp); |
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|
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if (ip != NULL) |
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fputs(ip, fp); |
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|
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return(ferror(fp) ? -1 : 0); |
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} |
