src/meta/meta2tga.c

#ifndef lint
static const char       RCSid[] = "$Id: meta2tga.c,v 1.8 2019/11/18 22:12:32 greg Exp $";
#endif
/*
 *  Program to convert meta-files to Targa 8-bit color-mapped format
 */

#include  "copyright.h"

#include  "rtprocess.h"
#include  "meta.h"
#include  "plot.h"
#include  "rast.h"
#include  "targa.h"

#define  MAXALLOC  100000
#define  DXSIZE  400            /* default x resolution */
#define  DYSIZE  400            /* default y resolution */
#define  XCOM  "pexpand +vOCImsp -DP %s | psort +y"


char  *progname;

SCANBLOCK       outblock;

int  dxsiz = DXSIZE, dysiz = DYSIZE;

int  maxalloc = MAXALLOC;

int  ydown = 0;

static char  outname[64];
static char  *outtack = NULL;

static FILE  *fout;

static int  lineno = 0; 

static short  condonly = FALSE,
              conditioned = FALSE;

static int putthead(struct hdStruct  *hp, char  *ip, FILE  *fp);


char *
findtack(char *s)               /* find place to tack on suffix */
{
        while (*s && *s != '.')
                s++;
        return(s);
}


int
main(
        int  argc,
        char  **argv
)
{
 FILE  *fp;
 char  comargs[200], command[300];

  fout = stdout;
 progname = *argv++;
 argc--;

 condonly = FALSE;
 conditioned = FALSE;
 
 while (argc && **argv == '-')  {
    switch (*(*argv+1))  {
       case 'c':
          condonly = TRUE;
          break;
       case 'r':
          conditioned = TRUE;
          break;
       case 'm':
          minwidth = atoi(*++argv);
          argc--;
          break;
       case 'x':
          dxsiz = atoi(*++argv);
          argc--;
          break;
       case 'y':
          dysiz = atoi(*++argv);
          argc--;
          break;
       case 'o':
          strcpy(outname, *++argv);
          outtack = findtack(outname);
          argc--;
          break;
       default:
          error(WARNING, "unknown option");
          break;
       }
    argv++;
    argc--;
    }

 if (conditioned) {
    if (argc)
       while (argc)  {
          fp = efopen(*argv, "r");
          plot(fp);
          fclose(fp);
          argv++;
          argc--;
          }
    else
       plot(stdin);
    if (lineno)
        nextpage();
 } else  {
    comargs[0] = '\0';
    while (argc)  {
       strcat(comargs, " ");
       strcat(comargs, *argv);
       argv++;
       argc--;
       }
    sprintf(command, XCOM, comargs);
    if (condonly)
       return(system(command));
    else  {
       if ((fp = popen(command, "r")) == NULL)
          error(SYSTEM, "cannot execute input filter");
       plot(fp);
       pclose(fp);
       if (lineno)
          nextpage();
       }
    }

 return(0);
}


void
thispage(void)          /* rewind current file */
{
    if (lineno)
        error(USER, "cannot restart page in thispage");
}


void
initfile(void)          /* initialize this file */
{
    static const unsigned char  cmap[24] = {0,0,0, 0,0,255, 0,188,0, 255,152,0,
                        0,200,200, 255,0,255, 179,179,0, 255,255,255};
    static int  filenum = 0;
    struct hdStruct  thead;
    int  i;

    if (outtack != NULL) {
        sprintf(outtack, "%d.tga", ++filenum);
        fout = efopen(outname, "w");
    }
    if (fout == NULL)
        error(USER, "no output file");
    thead.mapType = CM_HASMAP;
    thead.dataType = IM_CCMAP;
    thead.mapOrig = 0;
    thead.mapLength = 256;
    thead.CMapBits = 24;
    thead.XOffset = 0;
    thead.YOffset = 0;
    thead.x = dxsiz;
    thead.y = dysiz;
    thead.dataBits = 8;
    thead.imType = 0;
    putthead(&thead, NULL, fout);
    for (i = 0; i < 8*3; i++)
        putc(cmap[i], fout);
    while (i++ < 256*3)
        putc(0, fout);
}


void
nextpage(void)          /* advance to next page */
{

    if (lineno == 0)
        return;
    if (fout != NULL) {
        while (lineno < dysiz) {
            nextblock();
            outputblock();
        }
        fclose(fout);
        fout = NULL;
    }
    lineno = 0;

}


#define MINRUN  4

void
printblock(void)                /* output scanline block to file */
{
    int  i, c2;
    unsigned char  *scanline;
    int  j, beg, cnt = 0;

    if (lineno == 0)
        initfile();
    for (i = outblock.ybot; i <= outblock.ytop && i < dysiz; i++) {
        scanline = outblock.cols[i-outblock.ybot];
        for (j = outblock.xleft; j <= outblock.xright; j += cnt) {
            for (beg = j; beg <= outblock.xright; beg += cnt) {
                for (cnt = 1; cnt < 128 && beg+cnt <= outblock.xright &&
                        scanline[beg+cnt] == scanline[beg]; cnt++)
                    ;
                if (cnt >= MINRUN)
                    break;                      /* long enough */
            }
            while (j < beg) {           /* write out non-run */
                if ((c2 = beg-j) > 128) c2 = 128;
                putc(c2-1, fout);
                while (c2--)
                    putc(scanline[j++], fout);
            }
            if (cnt >= MINRUN) {                /* write out run */
                putc(127+cnt, fout);
                putc(scanline[beg], fout);
            } else
                cnt = 0;
        }
        lineno++;
    }
    
}


void
putint2(                        /* put a 2-byte positive integer */
        int  i,
        FILE    *fp
)
{
        putc(i&0xff, fp);
        putc(i>>8&0xff, fp);
}


int
putthead(               /* write header to output */
        struct hdStruct  *hp,
        char  *ip,
        FILE  *fp
)
{
        if (ip != NULL)
                putc(strlen(ip), fp);
        else
                putc(0, fp);
        putc(hp->mapType, fp);
        putc(hp->dataType, fp);
        putint2(hp->mapOrig, fp);
        putint2(hp->mapLength, fp);
        putc(hp->CMapBits, fp);
        putint2(hp->XOffset, fp);
        putint2(hp->YOffset, fp);
        putint2(hp->x, fp);
        putint2(hp->y, fp);
        putc(hp->dataBits, fp);
        putc(hp->imType, fp);

        if (ip != NULL)
                fputs(ip, fp);

        return(ferror(fp) ? -1 : 0);
}
Revision:	1.9
Committed:	Wed May 13 00:30:13 2020 UTC (4 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R4, rad5R3, HEAD
Changes since 1.8:	+12 -23 lines
Log Message:	Minor code cleanup
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	1.9	static const char RCSid[] = "$Id: meta2tga.c,v 1.8 2019/11/18 22:12:32 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* Program to convert meta-files to Targa 8-bit color-mapped format
6			*/
7
8	schorsch	1.4	#include "copyright.h"
9	greg	1.1
10	schorsch	1.4	#include "rtprocess.h"
11	greg	1.1	#include "meta.h"
12			#include "plot.h"
13			#include "rast.h"
14			#include "targa.h"
15
16	greg	1.7	#define MAXALLOC 100000
17	schorsch	1.4	#define DXSIZE 400 /* default x resolution */
18			#define DYSIZE 400 /* default y resolution */
19			#define XCOM "pexpand +vOCImsp -DP %s \| psort +y"
20	greg	1.1
21
22			char *progname;
23
24			SCANBLOCK outblock;
25
26	greg	1.8	int dxsiz = DXSIZE, dysiz = DYSIZE;
27	greg	1.1
28			int maxalloc = MAXALLOC;
29
30			int ydown = 0;
31
32			static char outname[64];
33			static char *outtack = NULL;
34
35			static FILE *fout;
36
37			static int lineno = 0;
38
39			static short condonly = FALSE,
40			conditioned = FALSE;
41
42	schorsch	1.5	static int putthead(struct hdStruct hp, char ip, FILE *fp);
43
44
45
46	greg	1.1	char *
47	greg	1.9	findtack(char s) / find place to tack on suffix */
48	greg	1.1	{
49			while (s && s != '.')
50			s++;
51			return(s);
52			}
53
54
55	schorsch	1.5	int
56			main(
57			int argc,
58			char **argv
59			)
60	greg	1.1	{
61			FILE *fp;
62			char comargs[200], command[300];
63
64			fout = stdout;
65			progname = *argv++;
66			argc--;
67
68			condonly = FALSE;
69			conditioned = FALSE;
70
71			while (argc && **argv == '-') {
72			switch ((argv+1)) {
73			case 'c':
74			condonly = TRUE;
75			break;
76			case 'r':
77			conditioned = TRUE;
78			break;
79			case 'm':
80			minwidth = atoi(*++argv);
81			argc--;
82			break;
83			case 'x':
84	greg	1.8	dxsiz = atoi(*++argv);
85	greg	1.1	argc--;
86			break;
87			case 'y':
88	greg	1.8	dysiz = atoi(*++argv);
89	greg	1.1	argc--;
90			break;
91			case 'o':
92			strcpy(outname, *++argv);
93			outtack = findtack(outname);
94			argc--;
95			break;
96			default:
97			error(WARNING, "unknown option");
98			break;
99			}
100			argv++;
101			argc--;
102			}
103
104			if (conditioned) {
105			if (argc)
106			while (argc) {
107			fp = efopen(*argv, "r");
108			plot(fp);
109			fclose(fp);
110			argv++;
111			argc--;
112			}
113			else
114			plot(stdin);
115			if (lineno)
116			nextpage();
117			} else {
118			comargs[0] = '\0';
119			while (argc) {
120			strcat(comargs, " ");
121			strcat(comargs, *argv);
122			argv++;
123			argc--;
124			}
125			sprintf(command, XCOM, comargs);
126			if (condonly)
127			return(system(command));
128			else {
129			if ((fp = popen(command, "r")) == NULL)
130			error(SYSTEM, "cannot execute input filter");
131			plot(fp);
132			pclose(fp);
133			if (lineno)
134			nextpage();
135			}
136			}
137
138			return(0);
139	greg	1.9	}
140	greg	1.1
141
142	schorsch	1.5	void
143			thispage(void) /* rewind current file */
144	greg	1.1	{
145			if (lineno)
146			error(USER, "cannot restart page in thispage");
147			}
148
149
150	schorsch	1.5	void
151			initfile(void) /* initialize this file */
152	greg	1.1	{
153	greg	1.9	static const unsigned char cmap[24] = {0,0,0, 0,0,255, 0,188,0, 255,152,0,
154			0,200,200, 255,0,255, 179,179,0, 255,255,255};
155	greg	1.1	static int filenum = 0;
156			struct hdStruct thead;
157	greg	1.9	int i;
158	greg	1.1
159			if (outtack != NULL) {
160			sprintf(outtack, "%d.tga", ++filenum);
161			fout = efopen(outname, "w");
162			}
163			if (fout == NULL)
164			error(USER, "no output file");
165			thead.mapType = CM_HASMAP;
166			thead.dataType = IM_CCMAP;
167			thead.mapOrig = 0;
168			thead.mapLength = 256;
169			thead.CMapBits = 24;
170			thead.XOffset = 0;
171			thead.YOffset = 0;
172	greg	1.8	thead.x = dxsiz;
173			thead.y = dysiz;
174	greg	1.1	thead.dataBits = 8;
175			thead.imType = 0;
176			putthead(&thead, NULL, fout);
177			for (i = 0; i < 8*3; i++)
178			putc(cmap[i], fout);
179			while (i++ < 256*3)
180			putc(0, fout);
181			}
182
183
184	schorsch	1.5	void
185			nextpage(void) /* advance to next page */
186	greg	1.1	{
187
188			if (lineno == 0)
189			return;
190			if (fout != NULL) {
191	greg	1.8	while (lineno < dysiz) {
192	greg	1.1	nextblock();
193			outputblock();
194			}
195			fclose(fout);
196			fout = NULL;
197			}
198			lineno = 0;
199
200			}
201
202
203			#define MINRUN 4
204
205	greg	1.9	void
206	schorsch	1.5	printblock(void) /* output scanline block to file */
207	greg	1.1	{
208			int i, c2;
209	greg	1.9	unsigned char *scanline;
210			int j, beg, cnt = 0;
211	greg	1.1
212			if (lineno == 0)
213			initfile();
214	greg	1.8	for (i = outblock.ybot; i <= outblock.ytop && i < dysiz; i++) {
215	greg	1.1	scanline = outblock.cols[i-outblock.ybot];
216			for (j = outblock.xleft; j <= outblock.xright; j += cnt) {
217			for (beg = j; beg <= outblock.xright; beg += cnt) {
218			for (cnt = 1; cnt < 128 && beg+cnt <= outblock.xright &&
219			scanline[beg+cnt] == scanline[beg]; cnt++)
220			;
221			if (cnt >= MINRUN)
222			break; /* long enough */
223			}
224			while (j < beg) { /* write out non-run */
225			if ((c2 = beg-j) > 128) c2 = 128;
226			putc(c2-1, fout);
227			while (c2--)
228			putc(scanline[j++], fout);
229			}
230			if (cnt >= MINRUN) { /* write out run */
231			putc(127+cnt, fout);
232			putc(scanline[beg], fout);
233			} else
234			cnt = 0;
235			}
236			lineno++;
237			}
238
239			}
240
241
242	schorsch	1.5	void
243			putint2( /* put a 2-byte positive integer */
244	greg	1.9	int i,
245			FILE *fp
246	schorsch	1.5	)
247	greg	1.1	{
248			putc(i&0xff, fp);
249			putc(i>>8&0xff, fp);
250			}
251
252
253	schorsch	1.5	int
254			putthead( /* write header to output */
255			struct hdStruct *hp,
256			char *ip,
257	greg	1.9	FILE *fp
258	schorsch	1.5	)
259	greg	1.1	{
260			if (ip != NULL)
261			putc(strlen(ip), fp);
262			else
263			putc(0, fp);
264			putc(hp->mapType, fp);
265			putc(hp->dataType, fp);
266			putint2(hp->mapOrig, fp);
267			putint2(hp->mapLength, fp);
268			putc(hp->CMapBits, fp);
269			putint2(hp->XOffset, fp);
270			putint2(hp->YOffset, fp);
271			putint2(hp->x, fp);
272			putint2(hp->y, fp);
273			putc(hp->dataBits, fp);
274			putc(hp->imType, fp);
275
276			if (ip != NULL)
277			fputs(ip, fp);
278
279			return(ferror(fp) ? -1 : 0);
280			}