2 24c02865 2005-01-04 devnull * graphics file reading for page
5 24c02865 2005-01-04 devnull #include <u.h>
6 24c02865 2005-01-04 devnull #include <libc.h>
7 24c02865 2005-01-04 devnull #include <draw.h>
8 24c02865 2005-01-04 devnull #include <event.h>
9 24c02865 2005-01-04 devnull #include <bio.h>
10 24c02865 2005-01-04 devnull #include "page.h"
12 24c02865 2005-01-04 devnull typedef struct Convert Convert;
13 24c02865 2005-01-04 devnull typedef struct GfxInfo GfxInfo;
14 24c02865 2005-01-04 devnull typedef struct Graphic Graphic;
16 24c02865 2005-01-04 devnull struct Convert {
17 24c02865 2005-01-04 devnull char *name;
18 24c02865 2005-01-04 devnull char *cmd;
19 24c02865 2005-01-04 devnull char *truecmd; /* cmd for true color */
22 24c02865 2005-01-04 devnull struct GfxInfo {
23 24c02865 2005-01-04 devnull Graphic *g;
26 24c02865 2005-01-04 devnull struct Graphic {
27 24c02865 2005-01-04 devnull int type;
28 24c02865 2005-01-04 devnull char *name;
29 24c02865 2005-01-04 devnull uchar *buf; /* if stdin */
30 24c02865 2005-01-04 devnull int nbuf;
38 24c02865 2005-01-04 devnull Iinferno,
40 24c02865 2005-01-04 devnull Icvt2pic,
41 24c02865 2005-01-04 devnull Iplan9bm,
42 24c02865 2005-01-04 devnull Iccittg4,
50 24c02865 2005-01-04 devnull * N.B. These commands need to read stdin if %a is replaced
51 24c02865 2005-01-04 devnull * with an empty string.
53 24c02865 2005-01-04 devnull Convert cvt[] = {
54 24c02865 2005-01-04 devnull [Ipic] { "plan9", "fb/3to1 rgbv %a |fb/pcp -tplan9" },
55 24c02865 2005-01-04 devnull [Itiff] { "tiff", "fb/tiff2pic %a | fb/3to1 rgbv | fb/pcp -tplan9" },
56 24c02865 2005-01-04 devnull [Iplan9bm] { "plan9bm", nil },
57 24c02865 2005-01-04 devnull [Ijpeg] { "jpeg", "jpg -9 %a", "jpg -t9 %a" },
58 24c02865 2005-01-04 devnull [Igif] { "gif", "gif -9 %a", "gif -t9 %a" },
59 24c02865 2005-01-04 devnull [Iinferno] { "inferno", nil },
60 24c02865 2005-01-04 devnull [Ifax] { "fax", "aux/g3p9bit -g %a" },
61 24c02865 2005-01-04 devnull [Icvt2pic] { "unknown", "fb/cvt2pic %a |fb/3to1 rgbv" },
62 24c02865 2005-01-04 devnull [Ippm] { "ppm", "ppm -9 %a", "ppm -t9 %a" },
63 24c02865 2005-01-04 devnull /* ``temporary'' hack for hobby */
64 24c02865 2005-01-04 devnull [Iccittg4] { "ccitt-g4", "cat %a|rx nslocum /usr/lib/ocr/bin/bcp -M|fb/pcp -tcompressed -l0" },
65 24c02865 2005-01-04 devnull [Ipng] { "png", "png -9 %a", "png -t9 %a" },
66 24c02865 2005-01-04 devnull [Iyuv] { "yuv", "yuv -9 %a", "yuv -t9 %a" },
67 24c02865 2005-01-04 devnull [Ibmp] { "bmp", "bmp -9 %a", "bmp -t9 %a" },
70 24c02865 2005-01-04 devnull static Image* convert(Graphic*);
71 24c02865 2005-01-04 devnull static Image* gfxdrawpage(Document *d, int page);
72 24c02865 2005-01-04 devnull static char* gfxpagename(Document*, int);
73 24c02865 2005-01-04 devnull static int spawnrc(char*, uchar*, int);
74 24c02865 2005-01-04 devnull static int addpage(Document*, char*);
75 24c02865 2005-01-04 devnull static int rmpage(Document*, int);
76 24c02865 2005-01-04 devnull static int genaddpage(Document*, char*, uchar*, int);
78 24c02865 2005-01-04 devnull static char*
79 24c02865 2005-01-04 devnull gfxpagename(Document *doc, int page)
81 24c02865 2005-01-04 devnull GfxInfo *gfx = doc->extra;
82 24c02865 2005-01-04 devnull return gfx->g[page].name;
85 24c02865 2005-01-04 devnull static Image*
86 24c02865 2005-01-04 devnull gfxdrawpage(Document *doc, int page)
88 24c02865 2005-01-04 devnull GfxInfo *gfx = doc->extra;
89 24c02865 2005-01-04 devnull return convert(gfx->g+page);
92 24c02865 2005-01-04 devnull Document*
93 24c02865 2005-01-04 devnull initgfx(Biobuf *b, int argc, char **argv, uchar *buf, int nbuf)
95 24c02865 2005-01-04 devnull GfxInfo *gfx;
96 24c02865 2005-01-04 devnull Document *doc;
100 24c02865 2005-01-04 devnull doc = emalloc(sizeof(*doc));
101 24c02865 2005-01-04 devnull gfx = emalloc(sizeof(*gfx));
102 24c02865 2005-01-04 devnull gfx->g = nil;
104 24c02865 2005-01-04 devnull doc->npage = 0;
105 24c02865 2005-01-04 devnull doc->drawpage = gfxdrawpage;
106 24c02865 2005-01-04 devnull doc->pagename = gfxpagename;
107 24c02865 2005-01-04 devnull doc->addpage = addpage;
108 24c02865 2005-01-04 devnull doc->rmpage = rmpage;
109 24c02865 2005-01-04 devnull doc->extra = gfx;
110 24c02865 2005-01-04 devnull doc->fwdonly = 0;
112 24c02865 2005-01-04 devnull fprint(2, "reading through graphics...\n");
113 24c02865 2005-01-04 devnull if(argc==0 && buf)
114 24c02865 2005-01-04 devnull genaddpage(doc, nil, buf, nbuf);
116 24c02865 2005-01-04 devnull for(i=0; i<argc; i++)
117 24c02865 2005-01-04 devnull if(addpage(doc, argv[i]) < 0)
118 24c02865 2005-01-04 devnull fprint(2, "warning: not including %s: %r\n", argv[i]);
121 24c02865 2005-01-04 devnull return doc;
124 24c02865 2005-01-04 devnull static int
125 24c02865 2005-01-04 devnull genaddpage(Document *doc, char *name, uchar *buf, int nbuf)
127 24c02865 2005-01-04 devnull Graphic *g;
128 24c02865 2005-01-04 devnull GfxInfo *gfx;
129 24c02865 2005-01-04 devnull Biobuf *b;
130 24c02865 2005-01-04 devnull uchar xbuf[32];
131 24c02865 2005-01-04 devnull int i, l;
134 24c02865 2005-01-04 devnull gfx = doc->extra;
136 24c02865 2005-01-04 devnull assert((name == nil) ^ (buf == nil));
137 24c02865 2005-01-04 devnull assert(name != nil || doc->npage == 0);
139 24c02865 2005-01-04 devnull for(i=0; i<doc->npage; i++)
140 24c02865 2005-01-04 devnull if(strcmp(gfx->g[i].name, name) == 0)
141 24c02865 2005-01-04 devnull return i;
143 24c02865 2005-01-04 devnull if(name){
144 24c02865 2005-01-04 devnull l = strlen(name);
145 24c02865 2005-01-04 devnull if((b = Bopen(name, OREAD)) == nil) {
146 24c02865 2005-01-04 devnull werrstr("Bopen: %r");
147 24c02865 2005-01-04 devnull return -1;
150 24c02865 2005-01-04 devnull if(Bread(b, xbuf, sizeof xbuf) != sizeof xbuf) {
151 24c02865 2005-01-04 devnull werrstr("short read: %r");
152 24c02865 2005-01-04 devnull return -1;
154 24c02865 2005-01-04 devnull Bterm(b);
155 24c02865 2005-01-04 devnull buf = xbuf;
156 24c02865 2005-01-04 devnull nbuf = sizeof xbuf;
160 24c02865 2005-01-04 devnull gfx->g = erealloc(gfx->g, (doc->npage+1)*(sizeof(*gfx->g)));
161 24c02865 2005-01-04 devnull g = &gfx->g[doc->npage];
163 24c02865 2005-01-04 devnull memset(g, 0, sizeof *g);
164 24c02865 2005-01-04 devnull if(memcmp(buf, "GIF", 3) == 0)
165 24c02865 2005-01-04 devnull g->type = Igif;
166 24c02865 2005-01-04 devnull else if(memcmp(buf, "\111\111\052\000", 4) == 0)
167 24c02865 2005-01-04 devnull g->type = Itiff;
168 24c02865 2005-01-04 devnull else if(memcmp(buf, "\115\115\000\052", 4) == 0)
169 24c02865 2005-01-04 devnull g->type = Itiff;
170 24c02865 2005-01-04 devnull else if(memcmp(buf, "\377\330\377", 3) == 0)
171 24c02865 2005-01-04 devnull g->type = Ijpeg;
172 24c02865 2005-01-04 devnull else if(memcmp(buf, "\211PNG\r\n\032\n", 3) == 0)
173 24c02865 2005-01-04 devnull g->type = Ipng;
174 24c02865 2005-01-04 devnull else if(memcmp(buf, "compressed\n", 11) == 0)
175 24c02865 2005-01-04 devnull g->type = Iinferno;
176 24c02865 2005-01-04 devnull else if(memcmp(buf, "\0PC Research, Inc", 17) == 0)
177 24c02865 2005-01-04 devnull g->type = Ifax;
178 24c02865 2005-01-04 devnull else if(memcmp(buf, "TYPE=ccitt-g31", 14) == 0)
179 24c02865 2005-01-04 devnull g->type = Ifax;
180 24c02865 2005-01-04 devnull else if(memcmp(buf, "II*", 3) == 0)
181 24c02865 2005-01-04 devnull g->type = Ifax;
182 24c02865 2005-01-04 devnull else if(memcmp(buf, "TYPE=ccitt-g4", 13) == 0)
183 24c02865 2005-01-04 devnull g->type = Iccittg4;
184 24c02865 2005-01-04 devnull else if(memcmp(buf, "TYPE=", 5) == 0)
185 24c02865 2005-01-04 devnull g->type = Ipic;
186 24c02865 2005-01-04 devnull else if(buf[0] == 'P' && '0' <= buf[1] && buf[1] <= '9')
187 24c02865 2005-01-04 devnull g->type = Ippm;
188 24c02865 2005-01-04 devnull else if(memcmp(buf, "BM", 2) == 0)
189 24c02865 2005-01-04 devnull g->type = Ibmp;
190 24c02865 2005-01-04 devnull else if(memcmp(buf, " ", 10) == 0 &&
191 24c02865 2005-01-04 devnull '0' <= buf[10] && buf[10] <= '9' &&
192 24c02865 2005-01-04 devnull buf[11] == ' ')
193 24c02865 2005-01-04 devnull g->type = Iplan9bm;
194 24c02865 2005-01-04 devnull else if(strtochan((char*)buf) != 0)
195 24c02865 2005-01-04 devnull g->type = Iplan9bm;
196 24c02865 2005-01-04 devnull else if (l > 4 && strcmp(name + l -4, ".yuv") == 0)
197 24c02865 2005-01-04 devnull g->type = Iyuv;
199 24c02865 2005-01-04 devnull g->type = Icvt2pic;
201 24c02865 2005-01-04 devnull if(name)
202 24c02865 2005-01-04 devnull g->name = estrdup(name);
204 24c02865 2005-01-04 devnull g->name = estrdup("stdin"); /* so it can be freed */
205 24c02865 2005-01-04 devnull g->buf = buf;
206 24c02865 2005-01-04 devnull g->nbuf = nbuf;
209 24c02865 2005-01-04 devnull if(chatty) fprint(2, "classified \"%s\" as \"%s\"\n", g->name, cvt[g->type].name);
210 24c02865 2005-01-04 devnull return doc->npage++;
213 24c02865 2005-01-04 devnull static int
214 24c02865 2005-01-04 devnull addpage(Document *doc, char *name)
216 24c02865 2005-01-04 devnull return genaddpage(doc, name, nil, 0);
219 24c02865 2005-01-04 devnull static int
220 24c02865 2005-01-04 devnull rmpage(Document *doc, int n)
223 24c02865 2005-01-04 devnull GfxInfo *gfx;
225 24c02865 2005-01-04 devnull if(n < 0 || n >= doc->npage)
226 24c02865 2005-01-04 devnull return -1;
228 24c02865 2005-01-04 devnull gfx = doc->extra;
229 24c02865 2005-01-04 devnull doc->npage--;
230 24c02865 2005-01-04 devnull free(gfx->g[n].name);
232 24c02865 2005-01-04 devnull for(i=n; i<doc->npage; i++)
233 24c02865 2005-01-04 devnull gfx->g[i] = gfx->g[i+1];
235 24c02865 2005-01-04 devnull if(n < doc->npage)
236 24c02865 2005-01-04 devnull return n;
237 24c02865 2005-01-04 devnull if(n == 0)
238 24c02865 2005-01-04 devnull return 0;
239 24c02865 2005-01-04 devnull return n-1;
243 24c02865 2005-01-04 devnull static Image*
244 24c02865 2005-01-04 devnull convert(Graphic *g)
247 24c02865 2005-01-04 devnull Convert c;
248 24c02865 2005-01-04 devnull char *cmd;
249 24c02865 2005-01-04 devnull char *name, buf[1000];
250 24c02865 2005-01-04 devnull Image *im;
251 24c02865 2005-01-04 devnull int rcspawned = 0;
252 24c02865 2005-01-04 devnull Waitmsg *w;
254 24c02865 2005-01-04 devnull c = cvt[g->type];
255 24c02865 2005-01-04 devnull if(c.cmd == nil) {
256 24c02865 2005-01-04 devnull if(chatty) fprint(2, "no conversion for bitmap \"%s\"...\n", g->name);
257 24c02865 2005-01-04 devnull if(g->buf == nil){ /* not stdin */
258 24c02865 2005-01-04 devnull fd = open(g->name, OREAD);
259 24c02865 2005-01-04 devnull if(fd < 0) {
260 24c02865 2005-01-04 devnull fprint(2, "cannot open file: %r\n");
261 24c02865 2005-01-04 devnull wexits("open");
264 24c02865 2005-01-04 devnull fd = stdinpipe(g->buf, g->nbuf);
265 24c02865 2005-01-04 devnull } else {
266 24c02865 2005-01-04 devnull cmd = c.cmd;
267 24c02865 2005-01-04 devnull if(truecolor && c.truecmd)
268 24c02865 2005-01-04 devnull cmd = c.truecmd;
270 24c02865 2005-01-04 devnull if(g->buf != nil) /* is stdin */
271 24c02865 2005-01-04 devnull name = "";
273 24c02865 2005-01-04 devnull name = g->name;
274 24c02865 2005-01-04 devnull if(strlen(cmd)+strlen(name) > sizeof buf) {
275 24c02865 2005-01-04 devnull fprint(2, "command too long\n");
276 24c02865 2005-01-04 devnull wexits("convert");
278 24c02865 2005-01-04 devnull snprint(buf, sizeof buf, cmd, name);
279 24c02865 2005-01-04 devnull if(chatty) fprint(2, "using \"%s\" to convert \"%s\"...\n", buf, g->name);
280 24c02865 2005-01-04 devnull fd = spawnrc(buf, g->buf, g->nbuf);
281 24c02865 2005-01-04 devnull rcspawned++;
282 24c02865 2005-01-04 devnull if(fd < 0) {
283 24c02865 2005-01-04 devnull fprint(2, "cannot spawn converter: %r\n");
284 24c02865 2005-01-04 devnull wexits("convert");
288 24c02865 2005-01-04 devnull im = readimage(display, fd, 0);
289 24c02865 2005-01-04 devnull if(im == nil) {
290 24c02865 2005-01-04 devnull fprint(2, "warning: couldn't read image: %r\n");
292 24c02865 2005-01-04 devnull close(fd);
294 24c02865 2005-01-04 devnull /* for some reason rx doesn't work well with wait */
295 24c02865 2005-01-04 devnull /* for some reason 3to1 exits on success with a non-null status of |3to1 */
296 24c02865 2005-01-04 devnull if(rcspawned && g->type != Iccittg4) {
297 24c02865 2005-01-04 devnull if((w=wait())!=nil && w->msg[0] && !strstr(w->msg, "3to1"))
298 24c02865 2005-01-04 devnull fprint(2, "slave wait error: %s\n", w->msg);
299 24c02865 2005-01-04 devnull free(w);
301 24c02865 2005-01-04 devnull return im;
304 24c02865 2005-01-04 devnull static int
305 24c02865 2005-01-04 devnull spawnrc(char *cmd, uchar *stdinbuf, int nstdinbuf)
307 24c02865 2005-01-04 devnull int pfd[2];
308 24c02865 2005-01-04 devnull int pid;
310 24c02865 2005-01-04 devnull if(chatty) fprint(2, "spawning(%s)...", cmd);
312 24c02865 2005-01-04 devnull if(pipe(pfd) < 0)
313 24c02865 2005-01-04 devnull return -1;
314 24c02865 2005-01-04 devnull if((pid = fork()) < 0)
315 24c02865 2005-01-04 devnull return -1;
317 24c02865 2005-01-04 devnull if(pid == 0) {
318 24c02865 2005-01-04 devnull close(pfd[1]);
319 24c02865 2005-01-04 devnull if(stdinbuf)
320 24c02865 2005-01-04 devnull dup(stdinpipe(stdinbuf, nstdinbuf), 0);
322 24c02865 2005-01-04 devnull dup(open("/dev/null", OREAD), 0);
323 24c02865 2005-01-04 devnull dup(pfd[0], 1);
324 24c02865 2005-01-04 devnull //dup(pfd[0], 2);
325 24c02865 2005-01-04 devnull execl("/bin/rc", "rc", "-c", cmd, nil);
326 24c02865 2005-01-04 devnull wexits("exec");
328 24c02865 2005-01-04 devnull close(pfd[0]);
329 24c02865 2005-01-04 devnull return pfd[1];