1 28994509 2004-04-21 devnull #include <u.h>
  2 28994509 2004-04-21 devnull #include <libc.h>
  3 28994509 2004-04-21 devnull #include <bio.h>
  4 28994509 2004-04-21 devnull #include <draw.h>
  5 28994509 2004-04-21 devnull #include <event.h>
  6 28994509 2004-04-21 devnull #include "imagefile.h"
  7 28994509 2004-04-21 devnull 
  8 28994509 2004-04-21 devnull extern int	debug;
  9 28994509 2004-04-21 devnull int	cflag = 0;
 10 28994509 2004-04-21 devnull int	dflag = 0;
 11 28994509 2004-04-21 devnull int	eflag = 0;
 12 28994509 2004-04-21 devnull int	nineflag = 0;
 13 28994509 2004-04-21 devnull int	threeflag = 0;
 14 28994509 2004-04-21 devnull int	colorspace = CRGB;
 15 28994509 2004-04-21 devnull int	output = 0;
 16 28994509 2004-04-21 devnull ulong	outchan = CMAP8;
 17 28994509 2004-04-21 devnull Image	*image;
 18 28994509 2004-04-21 devnull int	defaultcolor = 1;
 19 28994509 2004-04-21 devnull 
 20 28994509 2004-04-21 devnull enum{
 21 28994509 2004-04-21 devnull 	Border	= 2,
 22 28994509 2004-04-21 devnull 	Edge	= 5
 23 28994509 2004-04-21 devnull };
 24 28994509 2004-04-21 devnull 
 25 28994509 2004-04-21 devnull char	*show(int, char*, int);
 26 28994509 2004-04-21 devnull 
 27 28994509 2004-04-21 devnull void
 28 28994509 2004-04-21 devnull eresized(int new)
 29 28994509 2004-04-21 devnull {
 30 28994509 2004-04-21 devnull 	Rectangle r;
 31 28994509 2004-04-21 devnull 
 32 28994509 2004-04-21 devnull 	if(new && getwindow(display, Refnone) < 0){
 33 28994509 2004-04-21 devnull 		fprint(2, "png: can't reattach to window\n");
 34 28994509 2004-04-21 devnull 		exits("resize");
 35 28994509 2004-04-21 devnull 	}
 36 28994509 2004-04-21 devnull 	if(image == nil)
 37 28994509 2004-04-21 devnull 		return;
 38 846ec3d2 2006-02-15 devnull 	r = rectaddpt(image->r, subpt(screen->r.min, image->r.min));
 39 28a8042c 2006-03-19 devnull 	if(!new && !winsize)
 40 846ec3d2 2006-02-15 devnull 		drawresizewindow(r);
 41 28994509 2004-04-21 devnull 	draw(screen, r, image, nil, image->r.min);
 42 28994509 2004-04-21 devnull 	flushimage(display, 1);
 43 28994509 2004-04-21 devnull }
 44 28994509 2004-04-21 devnull 
 45 28994509 2004-04-21 devnull void
 46 be36ff68 2004-04-29 devnull usage(void)
 47 be36ff68 2004-04-29 devnull {
 48 be36ff68 2004-04-29 devnull 	fprint(2, "usage: png -39cdekrtv -W winsize [file.png ...]\n");
 49 be36ff68 2004-04-29 devnull 	exits("usage");
 50 be36ff68 2004-04-29 devnull }
 51 be36ff68 2004-04-29 devnull 
 52 be36ff68 2004-04-29 devnull void
 53 28994509 2004-04-21 devnull main(int argc, char *argv[])
 54 28994509 2004-04-21 devnull {
 55 28994509 2004-04-21 devnull 	int fd, i;
 56 28994509 2004-04-21 devnull 	char *err;
 57 28994509 2004-04-21 devnull 	char buf[12+1];
 58 28994509 2004-04-21 devnull 
 59 28994509 2004-04-21 devnull 	ARGBEGIN{
 60 be36ff68 2004-04-29 devnull 	case 'W':
 61 be36ff68 2004-04-29 devnull 		winsize = EARGF(usage());
 62 be36ff68 2004-04-29 devnull 		break;
 63 28994509 2004-04-21 devnull 	case 'c':		/* produce encoded, compressed, bitmap file; no display by default */
 64 28994509 2004-04-21 devnull 		cflag++;
 65 28994509 2004-04-21 devnull 		dflag++;
 66 28994509 2004-04-21 devnull 		output++;
 67 28994509 2004-04-21 devnull 		if(defaultcolor)
 68 28994509 2004-04-21 devnull 			outchan = CMAP8;
 69 28994509 2004-04-21 devnull 		break;
 70 28994509 2004-04-21 devnull 	case 'D':
 71 28994509 2004-04-21 devnull 		debug++;
 72 28994509 2004-04-21 devnull 		break;
 73 28994509 2004-04-21 devnull 	case 'd':		/* suppress display of image */
 74 28994509 2004-04-21 devnull 		dflag++;
 75 28994509 2004-04-21 devnull 		break;
 76 28994509 2004-04-21 devnull 	case 'e':		/* disable floyd-steinberg error diffusion */
 77 28994509 2004-04-21 devnull 		eflag++;
 78 28994509 2004-04-21 devnull 		break;
 79 28994509 2004-04-21 devnull 	case 'k':		/* force black and white */
 80 28994509 2004-04-21 devnull 		defaultcolor = 0;
 81 28994509 2004-04-21 devnull 		outchan = GREY8;
 82 28994509 2004-04-21 devnull 		break;
 83 28994509 2004-04-21 devnull 	case 'r':
 84 28994509 2004-04-21 devnull 		colorspace = CRGB;
 85 28994509 2004-04-21 devnull 		break;
 86 28994509 2004-04-21 devnull 	case '3':		/* produce encoded, compressed, three-color bitmap file; no display by default */
 87 28994509 2004-04-21 devnull 		threeflag++;
 88 28994509 2004-04-21 devnull 		/* fall through */
 89 28994509 2004-04-21 devnull 	case 't':		/* produce encoded, compressed, true-color bitmap file; no display by default */
 90 28994509 2004-04-21 devnull 		cflag++;
 91 28994509 2004-04-21 devnull 		dflag++;
 92 28994509 2004-04-21 devnull 		output++;
 93 28994509 2004-04-21 devnull 		defaultcolor = 0;
 94 28994509 2004-04-21 devnull 		outchan = RGB24;
 95 28994509 2004-04-21 devnull 		break;
 96 28994509 2004-04-21 devnull 	case 'v':		/* force RGBV */
 97 28994509 2004-04-21 devnull 		defaultcolor = 0;
 98 28994509 2004-04-21 devnull 		outchan = CMAP8;
 99 28994509 2004-04-21 devnull 		break;
100 28994509 2004-04-21 devnull 	case '9':		/* produce plan 9, uncompressed, bitmap file; no display by default */
101 28994509 2004-04-21 devnull 		nineflag++;
102 28994509 2004-04-21 devnull 		dflag++;
103 28994509 2004-04-21 devnull 		output++;
104 28994509 2004-04-21 devnull 		if(defaultcolor)
105 28994509 2004-04-21 devnull 			outchan = CMAP8;
106 28994509 2004-04-21 devnull 		break;
107 28994509 2004-04-21 devnull 	default:
108 be36ff68 2004-04-29 devnull 		usage();
109 28994509 2004-04-21 devnull 	}ARGEND;
110 28994509 2004-04-21 devnull 
111 28994509 2004-04-21 devnull 	if(dflag==0 && colorspace==CYCbCr){	/* see if we should convert right to RGB */
112 28994509 2004-04-21 devnull 		fd = open("/dev/screen", OREAD);
113 28994509 2004-04-21 devnull 		if(fd > 0){
114 28994509 2004-04-21 devnull 			buf[12] = '\0';
115 28994509 2004-04-21 devnull 			if(read(fd, buf, 12)==12 && chantodepth(strtochan(buf))>8)
116 28994509 2004-04-21 devnull 				colorspace = CRGB;
117 28994509 2004-04-21 devnull 			close(fd);
118 28994509 2004-04-21 devnull 		}
119 28994509 2004-04-21 devnull 	}
120 28994509 2004-04-21 devnull 
121 28994509 2004-04-21 devnull 	err = nil;
122 28994509 2004-04-21 devnull 	if(argc == 0)
123 28994509 2004-04-21 devnull 		err = show(0, "<stdin>", outchan);
124 28994509 2004-04-21 devnull 	else{
125 28994509 2004-04-21 devnull 		for(i=0; i<argc; i++){
126 28994509 2004-04-21 devnull 			fd = open(argv[i], OREAD);
127 28994509 2004-04-21 devnull 			if(fd < 0){
128 28994509 2004-04-21 devnull 				fprint(2, "png: can't open %s: %r\n", argv[i]);
129 28994509 2004-04-21 devnull 				err = "open";
130 28994509 2004-04-21 devnull 			}else{
131 28994509 2004-04-21 devnull 				err = show(fd, argv[i], outchan);
132 28994509 2004-04-21 devnull 				close(fd);
133 28994509 2004-04-21 devnull 			}
134 28994509 2004-04-21 devnull 			if((nineflag || cflag) && argc>1 && err==nil){
135 28994509 2004-04-21 devnull 				fprint(2, "png: exiting after one file\n");
136 28994509 2004-04-21 devnull 				break;
137 28994509 2004-04-21 devnull 			}
138 28994509 2004-04-21 devnull 		}
139 28994509 2004-04-21 devnull 	}
140 28994509 2004-04-21 devnull 	exits(err);
141 28994509 2004-04-21 devnull }
142 28994509 2004-04-21 devnull 
143 28994509 2004-04-21 devnull char*
144 28994509 2004-04-21 devnull show(int fd, char *name, int outc)
145 28994509 2004-04-21 devnull {
146 28994509 2004-04-21 devnull 	Rawimage **array, *r, *c;
147 28994509 2004-04-21 devnull 	static int inited;
148 28994509 2004-04-21 devnull 	Image *i;
149 28994509 2004-04-21 devnull 	int j, ch, outchan;
150 28994509 2004-04-21 devnull 	Biobuf b;
151 28994509 2004-04-21 devnull 	char buf[32];
152 28994509 2004-04-21 devnull 
153 28994509 2004-04-21 devnull 	if(Binit(&b, fd, OREAD) < 0)
154 28994509 2004-04-21 devnull 		return nil;
155 28994509 2004-04-21 devnull 	outchan = outc;
156 28994509 2004-04-21 devnull 	array = Breadpng(&b, colorspace);
157 28994509 2004-04-21 devnull 	if(array == nil || array[0]==nil){
158 28994509 2004-04-21 devnull 		fprint(2, "png: decode %s failed: %r\n", name);
159 28994509 2004-04-21 devnull 		return "decode";
160 28994509 2004-04-21 devnull 	}
161 28994509 2004-04-21 devnull 	Bterm(&b);
162 28994509 2004-04-21 devnull 
163 28994509 2004-04-21 devnull 	r = array[0];
164 28994509 2004-04-21 devnull 	if(!dflag && !inited){
165 28994509 2004-04-21 devnull 		if(initdraw(0, 0, 0) < 0){
166 28994509 2004-04-21 devnull 			fprint(2, "png: initdraw failed: %r\n");
167 28994509 2004-04-21 devnull 			return "initdraw";
168 28994509 2004-04-21 devnull 		}
169 28994509 2004-04-21 devnull 		einit(Ekeyboard|Emouse);
170 28994509 2004-04-21 devnull 		if(defaultcolor && screen->depth>8 && outchan==CMAP8)
171 28994509 2004-04-21 devnull 			outchan = RGB24;
172 28994509 2004-04-21 devnull 		inited++;
173 28994509 2004-04-21 devnull 	}
174 28994509 2004-04-21 devnull 	if(outchan == CMAP8)
175 28994509 2004-04-21 devnull 		c = torgbv(r, !eflag);
176 28994509 2004-04-21 devnull 	else{
177 28994509 2004-04-21 devnull 		if(outchan==GREY8 || (r->chandesc==CY && threeflag==0)){
178 28994509 2004-04-21 devnull 			c = totruecolor(r, CY);
179 28994509 2004-04-21 devnull 			outchan = GREY8;
180 28994509 2004-04-21 devnull 		}else
181 28994509 2004-04-21 devnull 			c = totruecolor(r, CRGB24);
182 28994509 2004-04-21 devnull 	}
183 28994509 2004-04-21 devnull 	if(c == nil){
184 28994509 2004-04-21 devnull 		fprint(2, "png: conversion of %s failed: %r\n", name);
185 28994509 2004-04-21 devnull 		return "torgbv";
186 28994509 2004-04-21 devnull 	}
187 28994509 2004-04-21 devnull 	if(!dflag){
188 28994509 2004-04-21 devnull 		if(c->chandesc == CY)
189 28994509 2004-04-21 devnull 			i = allocimage(display, c->r, GREY8, 0, 0);
190 28994509 2004-04-21 devnull 		else
191 28994509 2004-04-21 devnull 			i = allocimage(display, c->r, outchan, 0, 0);
192 28994509 2004-04-21 devnull 		if(i == nil){
193 28994509 2004-04-21 devnull 			fprint(2, "png: allocimage %s failed: %r\n", name);
194 28994509 2004-04-21 devnull 			return "allocimage";
195 28994509 2004-04-21 devnull 		}
196 28994509 2004-04-21 devnull 		if(loadimage(i, i->r, c->chans[0], c->chanlen) < 0){
197 28994509 2004-04-21 devnull 			fprint(2, "png: loadimage %s failed: %r\n", name);
198 28994509 2004-04-21 devnull 			return "loadimage";
199 28994509 2004-04-21 devnull 		}
200 28994509 2004-04-21 devnull 		image = i;
201 28994509 2004-04-21 devnull 		eresized(0);
202 28994509 2004-04-21 devnull 		if((ch=ekbd())=='q' || ch==0x7F || ch==0x04)
203 28994509 2004-04-21 devnull 			exits(nil);
204 28994509 2004-04-21 devnull 		draw(screen, screen->clipr, display->white, nil, ZP);
205 28994509 2004-04-21 devnull 		image = nil;
206 28994509 2004-04-21 devnull 		freeimage(i);
207 28994509 2004-04-21 devnull 	}
208 28994509 2004-04-21 devnull 	if(nineflag){
209 28994509 2004-04-21 devnull 		chantostr(buf, outchan);
210 28994509 2004-04-21 devnull 		print("%11s %11d %11d %11d %11d ", buf,
211 28994509 2004-04-21 devnull 			c->r.min.x, c->r.min.y, c->r.max.x, c->r.max.y);
212 28994509 2004-04-21 devnull 		if(write(1, c->chans[0], c->chanlen) != c->chanlen){
213 28994509 2004-04-21 devnull 			fprint(2, "png: %s: write error %r\n", name);
214 28994509 2004-04-21 devnull 			return "write";
215 28994509 2004-04-21 devnull 		}
216 28994509 2004-04-21 devnull 	}else if(cflag){
217 28994509 2004-04-21 devnull 		if(writerawimage(1, c) < 0){
218 28994509 2004-04-21 devnull 			fprint(2, "png: %s: write error: %r\n", name);
219 28994509 2004-04-21 devnull 			return "write";
220 28994509 2004-04-21 devnull 		}
221 28994509 2004-04-21 devnull 	}
222 28994509 2004-04-21 devnull 	for(j=0; j<r->nchans; j++)
223 28994509 2004-04-21 devnull 		free(r->chans[j]);
224 28994509 2004-04-21 devnull 	free(r->cmap);
225 28994509 2004-04-21 devnull 	free(r);
226 28994509 2004-04-21 devnull 	free(array);
227 28994509 2004-04-21 devnull 	if(c){
228 28994509 2004-04-21 devnull 		free(c->chans[0]);
229 28994509 2004-04-21 devnull 		free(c);
230 28994509 2004-04-21 devnull 	}
231 28994509 2004-04-21 devnull 	return nil;
232 28994509 2004-04-21 devnull }