1 /* lot's of code c&p-ed directly from mupdf */
16 /* fugly as hell and GCC specific but... */
18 #define GL_GLEXT_PROTOTYPES
24 #include <caml/fail.h>
25 #include <caml/alloc.h>
26 #include <caml/memory.h>
27 #include <caml/unixsupport.h>
33 #define lprintf printf
38 #define ARSERT(cond) for (;;) { \
40 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
56 struct pagedim
*pagedim
;
58 struct slice slices
[];
74 struct pagedim
*pagedims
;
99 static pthread_mutex_t mutex
= PTHREAD_MUTEX_INITIALIZER
;
101 static void lock (const char *cap
)
103 int ret
= pthread_mutex_lock (&mutex
);
105 errx (1, "%s: pthread_mutex_lock: %s", cap
, strerror (ret
));
109 static void unlock (const char *cap
)
111 int ret
= pthread_mutex_unlock (&mutex
);
113 errx (1, "%s: pthread_mutex_unlock: %s", cap
, strerror (ret
));
117 static int trylock (const char *cap
)
119 int ret
= pthread_mutex_trylock (&mutex
);
121 if (ret
&& ret
!= EBUSY
) {
122 errx (1, "%s: pthread_mutex_trylock: %s", cap
, strerror (ret
));
127 static void *parse_pointer (const char *cap
, const char *s
)
132 ret
= sscanf (s
, "%p", &ptr
);
134 errx (1, "%s: cannot parse pointer in `%s'", cap
, s
);
139 static int hasdata (int sock
)
146 ret
= poll (&pfd
, 1, 0);
153 return pfd
.revents
& POLLIN
;
156 static double now (void)
160 if (gettimeofday (&tv
, NULL
)) {
161 err (1, "gettimeofday");
163 return tv
.tv_sec
+ tv
.tv_usec
*1e-6;
166 static void readdata (int fd
, char *p
, int size
)
170 n
= read (fd
, p
, size
);
172 err (1, "read (req %d, ret %zd)", size
, n
);
176 static void writedata (int fd
, char *p
, int size
)
181 buf
[0] = (size
>> 24) & 0xff;
182 buf
[1] = (size
>> 16) & 0xff;
183 buf
[2] = (size
>> 8) & 0xff;
184 buf
[3] = (size
>> 0) & 0xff;
186 n
= write (fd
, buf
, 4);
188 err (1, "write %zd", n
);
191 n
= write (fd
, p
, size
);
193 err (1, "write (req %d, ret %zd)", size
, n
);
197 static void __attribute__ ((format (printf
, 2, 3)))
198 printd (int fd
, const char *fmt
, ...)
205 len
= vsnprintf (buf
, sizeof (buf
), fmt
, ap
);
207 writedata (fd
, buf
, len
);
210 static void die (fz_error error
)
212 fz_catch (error
, "aborting");
214 pdf_closexref (state
.xref
);
218 void openxref (char *filename
)
223 fd
= open (filename
, O_BINARY
| O_RDONLY
, 0666);
225 die (fz_throw ("cannot open file '%s'", filename
));
227 file
= fz_openfile (fd
);
228 state
.xref
= pdf_openxref (file
);
230 die (fz_throw ("cannot open PDF file '%s'", filename
));
231 fz_dropstream (file
);
233 if (pdf_needspassword (state
.xref
)) {
234 die (fz_throw ("password protected"));
237 state
.pagecount
= pdf_getpagecount (state
.xref
);
238 state
.pagetbl
= stat_alloc (state
.pagecount
* sizeof (*state
.pagetbl
));
241 static int readlen (int fd
)
248 err (1, "read %zd", n
);
251 return (p
[0] << 24) | (p
[1] << 16) | (p
[2] << 8) | p
[3];
254 static void freepage (struct page
*page
)
259 fz_droppixmap (page
->pixmap
);
260 for (p
= state
.pages
; p
; p
= p
->prev
) {
261 if (p
->prev
== page
) {
262 p
->prev
= page
->prev
;
266 for (i
= 0; i
< page
->slicecount
; ++i
) {
267 struct slice
*s
= &page
->slices
[i
];
268 if (s
->texindex
!= -1) {
269 if (state
.texowners
[s
->texindex
].slice
== s
) {
270 state
.texowners
[s
->texindex
].slice
= NULL
;
271 ARSERT (state
.texowners
[s
->texindex
].w
== s
->w
);
272 ARSERT (state
.texowners
[s
->texindex
].h
>= s
->h
);
277 fz_freetextspan (page
->text
);
279 if (page
->drawpage
) {
280 pdf_droppage (page
->drawpage
);
286 static void subdivide (struct page
*p
)
289 int h
= p
->pixmap
->h
;
290 int th
= MIN (h
, state
.sliceheight
);
292 for (i
= 0; i
< p
->slicecount
; ++i
) {
293 struct slice
*s
= &p
->slices
[i
];
301 static void *render (int pageno
, int pindex
)
309 fz_displaylist
*list
;
310 fz_device
*idev
, *mdev
;
311 struct pagedim
*pagedim
;
314 /* printd (state.sock, "T \"rendering %d\"", pageno); */
315 pdf_flushxref (state
.xref
, 0);
317 pagedim
= &state
.pagedims
[pindex
];
318 slicecount
= (pagedim
->bbox
.y1
- pagedim
->bbox
.y0
319 + state
.sliceheight
- 1) / state
.sliceheight
;
320 slicecount
+= slicecount
== 0;
322 page
= calloc (sizeof (*page
)
323 + (slicecount
* sizeof (struct slice
)), 1);
325 err (1, "calloc page %d\n", pageno
);
327 page
->slicecount
= slicecount
;
328 page
->prev
= state
.pages
;
331 pageobj
= pdf_getpageobject (state
.xref
, pageno
);
333 die (fz_throw ("cannot retrieve info from page %d", pageno
));
335 error
= pdf_loadpage (&drawpage
, state
.xref
, pageobj
);
339 page
->pixmap
= fz_newpixmapwithrect (pdf_devicergb
, pagedim
->bbox
);
342 fz_clearpixmap (page
->pixmap
, 0xFF);
344 list
= fz_newdisplaylist ();
346 die (fz_throw ("fz_newdisplaylist failed"));
348 mdev
= fz_newlistdevice (list
);
349 error
= pdf_runcontentstream (mdev
, fz_identity (), state
.xref
,
354 fz_freedevice (mdev
);
356 idev
= fz_newdrawdevice (state
.cache
, page
->pixmap
);
358 die (fz_throw ("fz_newdrawdevice failed"));
359 fz_executedisplaylist (list
, idev
, pagedim
->ctm
);
360 fz_freedevice (idev
);
362 fz_freedisplaylist (list
);
364 page
->drawpage
= drawpage
;
365 page
->pagedim
= pagedim
;
366 page
->pageno
= pageno
;
370 if (!state
.lotsamemory
) {
371 pdf_agestoreditems (state
.xref
->store
);
372 pdf_evictageditems (state
.xref
->store
);
375 /* printd (state.sock, "T \"rendering %d took %f sec\"", pageno, end - start); */
379 static void initpdims (void)
391 for (pageno
= 1; pageno
<= state
.pagecount
; ++pageno
) {
397 if (!(pageno
& 31)) {
402 printd (state
.sock
, "T \"processing page %d %f\"", pageno
, d
- c
);
406 pageobj
= pdf_getpageobject (state
.xref
, pageno
);
408 die (fz_throw ("cannot retrieve info from page %d", pageno
));
411 state
.pagetbl
[pageno
- 1] = fz_tonum (pageobj
);
412 obj
= fz_dictgets (pageobj
, "CropBox");
413 if (!fz_isarray (obj
)) {
414 obj
= fz_dictgets (pageobj
, "MediaBox");
415 if (!fz_isarray (obj
)) {
416 die (fz_throw ("cannot find page bounds %d (%d R)",
417 fz_tonum (obj
), fz_togen (obj
)));
421 box
= pdf_torect (obj
);
422 obj
= fz_dictgets (pageobj
, "Rotate");
424 rotate
= fz_toint (obj
);
429 && (p
->rotate
== rotate
430 && !memcmp (&p
->box
, &box
, sizeof (box
)))) {
434 size
+= sizeof (*state
.pagedims
);
435 state
.pagedims
= realloc (state
.pagedims
, size
);
436 if (!state
.pagedims
) {
437 err (1, "realloc pagedims %zu", size
);
440 p
= &state
.pagedims
[pindex
++];
441 memcpy (&p
->box
, &box
, sizeof (box
));
444 p
->pageno
= pageno
- 1;
447 state
.pagedimcount
= pindex
;
449 printd (state
.sock
, "T \"Processed %d pages in %f seconds\"",
450 state
.pagecount
, b
- a
);
453 static void layout (void)
459 struct pagedim
*p
= state
.pagedims
;
462 printd (state
.sock
, "c");
463 for (pindex
= 0; pindex
< state
.pagedimcount
; ++pindex
, ++p
) {
464 box
.x0
= MIN (p
->box
.x0
, p
->box
.x1
);
465 box
.y0
= MIN (p
->box
.y0
, p
->box
.y1
);
466 box
.x1
= MAX (p
->box
.x0
, p
->box
.x1
);
467 box
.y1
= MAX (p
->box
.y0
, p
->box
.y1
);
469 ctm
= fz_identity ();
470 ctm
= fz_concat (ctm
, fz_translate (0, -box
.y1
));
471 ctm
= fz_concat (ctm
, fz_rotate (p
->rotate
));
472 box2
= fz_transformrect (ctm
, box
);
473 w
= box2
.x1
- box2
.x0
;
475 zoom
= (state
.w
/ w
);
476 ctm
= fz_identity ();
477 ctm
= fz_concat (ctm
, fz_translate (0, -box
.y1
));
478 ctm
= fz_concat (ctm
, fz_scale (zoom
, -zoom
));
479 ctm
= fz_concat (ctm
, fz_rotate (p
->rotate
));
480 p
->bbox
= fz_roundrect (fz_transformrect (ctm
, box
));
481 memcpy (&p
->ctm
, &ctm
, sizeof (ctm
));
484 while (p
-- != state
.pagedims
) {
485 printd (state
.sock
, "l %d %d %d",
486 p
->pageno
, p
->bbox
.x1
- p
->bbox
.x0
, p
->bbox
.y1
- p
->bbox
.y0
);
489 printd (state
.sock
, "C %d", state
.pagecount
);
492 static void recurse_outline (pdf_outline
*outline
, int level
)
499 if (!outline
->link
) goto next
;
501 obj
= outline
->link
->dest
;
502 if (fz_isarray (obj
)) {
506 struct pagedim
*pagedim
= state
.pagedims
;
508 obj2
= fz_arrayget (obj
, 0);
509 if (fz_isint (obj2
)) {
510 pageno
= fz_toint (obj2
);
513 num
= fz_tonum (obj2
);
514 for (i
= 0; i
< state
.pagecount
; ++i
) {
515 if (state
.pagetbl
[i
] == num
) {
522 for (i
= 0; i
< state
.pagedimcount
; ++i
) {
523 if (state
.pagedims
[i
].pageno
> pageno
)
525 pagedim
= &state
.pagedims
[i
];
528 if (fz_arraylen (obj
) > 3) {
531 p
.x
= fz_toint (fz_arrayget (obj
, 2));
532 p
.y
= fz_toint (fz_arrayget (obj
, 3));
533 p
= fz_transformpoint (pagedim
->ctm
, p
);
538 lprintf ("%*c%s %d\n", level
, ' ', outline
->title
, pageno
);
539 printd (state
.sock
, "o %d %d %d %s",
540 level
, pageno
, top
, outline
->title
);
542 if (outline
->child
) {
543 recurse_outline (outline
->child
, level
+ 1);
545 outline
= outline
->next
;
549 static void process_outline (void)
551 pdf_outline
*outline
;
553 outline
= pdf_loadoutline (state
.xref
);
555 recurse_outline (outline
, 0);
556 pdf_dropoutline (outline
);
560 /* wishful thinking function */
561 static void search (regex_t
*re
, int pageno
, int y
, int forward
)
571 fz_textspan
*text
, *span
;
572 struct pagedim
*pdim
, *pdimprev
;
578 while (pageno
>= 0 && pageno
< state
.pagecount
&& !stop
) {
581 if (hasdata (state
.sock
)) {
582 printd (state
.sock
, "T \"attention requested aborting search at %d\"",
587 printd (state
.sock
, "T \"searching in page %d\"", pageno
);
591 for (i
= 0; i
< state
.pagedimcount
; ++i
) {
592 pdim
= &state
.pagedims
[i
];
593 if (pdim
->pageno
== pageno
) {
596 if (pdim
->pageno
> pageno
) {
605 pageobj
= pdf_getpageobject (state
.xref
, pageno
+ 1);
607 die (fz_throw ("cannot retrieve info from page %d", pageno
));
609 error
= pdf_loadpage (&drawpage
, state
.xref
, pageobj
);
613 text
= fz_newtextspan ();
614 tdev
= fz_newtextdevice (text
);
615 error
= pdf_runcontentstream (tdev
, pdim
->ctm
, state
.xref
,
618 if (error
) die (error
);
619 fz_freedevice (tdev
);
621 for (span
= text
; span
; span
= span
->next
) {
625 /* XXX: spans are not sorted "visually" */
626 for (i
= 0; i
< MIN (span
->len
, sizeof (buf
) - 1); ++i
) {
628 if (span
->text
[i
].bbox
.y0
< y
+ 1) {
633 if (span
->text
[i
].bbox
.y0
> y
- 1) {
637 if (span
->text
[i
].c
< 256) {
638 *p
++ = span
->text
[i
].c
;
649 ret
= regexec (re
, buf
, 1, &rm
, 0);
651 if (ret
!= REG_NOMATCH
) {
654 size
= regerror (ret
, re
, errbuf
, sizeof (errbuf
));
656 "T \"regexec error `%.*s'\"",
663 r
.x0
= span
->text
[rm
.rm_so
].bbox
.x0
- pdim
->bbox
.x0
;
664 r
.y0
= span
->text
[rm
.rm_so
].bbox
.y0
;
665 r
.x1
= span
->text
[rm
.rm_eo
- 1].bbox
.x1
- pdim
->bbox
.x0
;
666 r
.y1
= span
->text
[rm
.rm_eo
- 1].bbox
.y1
;
669 printd (state
.sock
, "F %d %d %f %f %f %f",
675 printd (state
.sock
, "R %d %d %f %f %f %f",
680 printd (state
.sock
, "T \"found at %d `%.*s' %f in %f sec\"",
681 pageno
, rm
.rm_eo
- rm
.rm_so
, &buf
[rm
.rm_so
],
682 span
->text
[0].bbox
.y0
- drawpage
->mediabox
.y0
,
695 fz_freetextspan (text
);
696 pdf_droppage (drawpage
);
700 printd (state
.sock
, "T \"no matches %f sec\"", end
- start
);
702 printd (state
.sock
, "d");
705 static void *mainloop (void *unused
)
708 int len
, ret
, oldlen
= 0;
711 len
= readlen (state
.sock
);
713 errx (1, "readlen returned 0");
716 if (oldlen
< len
+ 1) {
717 p
= realloc (p
, len
+ 1);
719 err (1, "realloc %d failed", len
+ 1);
723 readdata (state
.sock
, p
, len
);
726 if (!strncmp ("open", p
, 4)) {
727 char *filename
= p
+ 5;
732 else if (!strncmp ("free", p
, 4)) {
735 ret
= sscanf (p
+ 4, " %p", &ptr
);
737 errx (1, "malformed free `%.*s' ret=%d", len
, p
, ret
);
742 printd (state
.sock
, "d");
744 else if (!strncmp ("search", p
, 6)) {
745 int icase
, pageno
, y
, ret
, len2
, forward
;
749 ret
= sscanf (p
+ 6, " %d %d %d %d %n",
750 &icase
, &pageno
, &y
, &forward
, &len2
);
752 errx (1, "malformed search `%s' ret=%d", p
, ret
);
755 pattern
= p
+ 6 + len2
;
756 ret
= regcomp (&re
, pattern
,
757 REG_EXTENDED
| (icase
? REG_ICASE
: 0));
762 size
= regerror (ret
, &re
, errbuf
, sizeof (errbuf
));
763 printd (state
.sock
, "T \"regcomp failed `%.*s'\"", (int) size
, errbuf
);
766 search (&re
, pageno
, y
, forward
);
770 else if (!strncmp ("geometry", p
, 8)) {
773 ret
= sscanf (p
+ 8, " %d %d", &w
, &h
);
775 errx (1, "malformed geometry `%.*s' ret=%d", len
, p
, ret
);
781 for (i
= 0; i
< state
.texcount
; ++i
) {
782 state
.texowners
[i
].slice
= NULL
;
789 printd (state
.sock
, "d");
791 else if (!strncmp ("render", p
, 6)) {
792 int pageno
, pindex
, w
, h
, ret
;
795 ret
= sscanf (p
+ 6, " %d %d %d %d", &pageno
, &pindex
, &w
, &h
);
797 errx (1, "bad render line `%.*s' ret=%d", len
, p
, ret
);
800 page
= render (pageno
, pindex
);
801 printd (state
.sock
, "r %d %d %d %p\n",
808 errx (1, "unknown command %.*s", len
, p
);
814 static void upload2 (struct page
*page
, int slicenum
, const char *cap
)
819 struct slice
*slice
= &page
->slices
[slicenum
];
824 ARSERT (w
== slice
->w
);
825 if (slice
->texindex
!= -1
826 && state
.texowners
[slice
->texindex
].slice
== slice
) {
827 glBindTexture (GL_TEXTURE_RECTANGLE_ARB
, state
.texids
[slice
->texindex
]);
831 int index
= (state
.texindex
++ % state
.texcount
);
834 for (i
= 0; i
< slicenum
; ++i
) {
835 offset
+= w
* page
->slices
[i
].h
* 4;
838 if (state
.texowners
[index
].w
== slice
->w
) {
839 if (state
.texowners
[index
].h
>= slice
->h
) {
843 state
.texowners
[index
].h
= slice
->h
;
847 state
.texowners
[index
].h
= slice
->h
;
850 state
.texowners
[index
].slice
= slice
;
851 state
.texowners
[index
].w
= slice
->w
;
852 slice
->texindex
= index
;
854 glBindTexture (GL_TEXTURE_RECTANGLE_ARB
, state
.texids
[slice
->texindex
]);
858 GLenum err
= glGetError ();
859 if (err
!= GL_NO_ERROR
) {
860 printf ("\e[0;31mERROR1 %d %d %#x\e[0m\n", w
, slice
->h
, err
);
864 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB
,
872 page
->pixmap
->samples
+ offset
875 GLenum err
= glGetError ();
876 if (err
!= GL_NO_ERROR
) {
877 printf ("\e[0;31mERROR %d %d %#x\e[0m\n", w
, slice
->h
, err
);
883 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB
,
891 page
->pixmap
->samples
+ offset
896 lprintf ("%s[%d] slice=%d(%d,%d) texid=%d %f sec\n",
897 subimage
? "sub" : "img",
898 page
->pageno
, slicenum
,
900 state
.texids
[slice
->texindex
],
905 CAMLprim value
ml_preload (value ptr_v
)
911 char *s
= String_val (ptr_v
);
914 if (trylock ("ml_preload")) {
917 ret
= sscanf (s
, "%p", &ptr
);
919 errx (1, "cannot parse pointer `%s'", s
);
923 for (i
= 0; i
< page
->slicecount
; ++i
) {
924 upload2 (ptr
, i
, "preload");
927 unlock ("ml_preload");
929 CAMLreturn (Val_unit
);
932 CAMLprim value
ml_draw (value dispy_v
, value w_v
, value h_v
,
933 value py_v
, value ptr_v
)
935 CAMLparam5 (dispy_v
, w_v
, h_v
, py_v
, ptr_v
);
936 int dispy
= Int_val (dispy_v
);
937 int w
= Int_val (w_v
);
938 int h
= Int_val (h_v
);
939 int py
= Int_val (py_v
);
940 char *s
= String_val (ptr_v
);
946 if (trylock ("ml_draw")) {
950 ret
= sscanf (s
, "%p", &ptr
);
952 errx (1, "cannot parse pointer `%s'", s
);
958 ARSERT (h
>= 0 && "ml_draw wrong h");
960 glEnable (GL_TEXTURE_RECTANGLE_ARB
);
961 if (state
.useatifs
) {
962 glEnable (GL_FRAGMENT_SHADER_ATI
);
965 for (slicenum
= 0; slicenum
< page
->slicecount
; ++slicenum
) {
966 struct slice
*slice
= &page
->slices
[slicenum
];
973 h
= MIN (state
.h
, h
);
976 struct slice
*slice
= &page
->slices
[slicenum
];
978 ARSERT (slicenum
< page
->slicecount
&& "ml_draw wrong slicenum");
980 th
= MIN (h
, slice
->h
- py
);
981 upload2 (page
, slicenum
, "upload");
985 glTexCoord2i (0, py
);
986 glVertex2i (0, dispy
);
988 glTexCoord2i (w
, py
);
989 glVertex2i (w
, dispy
);
991 glTexCoord2i (w
, py
+th
);
992 glVertex2i (w
, dispy
+ th
);
994 glTexCoord2i (0, py
+th
);
995 glVertex2i (0, dispy
+ th
);
1005 glDisable (GL_TEXTURE_RECTANGLE_ARB
);
1006 if (state
.useatifs
) {
1007 glDisable (GL_FRAGMENT_SHADER_ATI
);
1012 CAMLreturn (Val_unit
);
1015 static pdf_link
*getlink (struct page
*page
, int x
, int y
)
1024 ctm
= fz_invertmatrix (page
->pagedim
->ctm
);
1025 p
= fz_transformpoint (ctm
, p
);
1027 for (link
= page
->drawpage
->links
; link
; link
= link
->next
) {
1028 if (p
.x
>= link
->rect
.x0
&& p
.x
<= link
->rect
.x1
) {
1029 if (p
.y
>= link
->rect
.y0
&& p
.y
<= link
->rect
.y1
) {
1030 if (link
->kind
== PDF_LGOTO
) {
1039 CAMLprim value
ml_checklink (value ptr_v
, value x_v
, value y_v
)
1041 CAMLparam3 (ptr_v
, x_v
, y_v
);
1042 char *s
= String_val (ptr_v
);
1045 if (trylock ("ml_checklink")) {
1049 ret
= NULL
!= getlink (parse_pointer ("ml_checklink", s
),
1050 Int_val (x_v
), Int_val (y_v
));
1051 unlock ("ml_checklink");
1053 CAMLreturn (Val_bool (ret
));
1056 CAMLprim value
ml_getlink (value ptr_v
, value x_v
, value y_v
)
1058 CAMLparam3 (ptr_v
, x_v
, y_v
);
1059 CAMLlocal2 (ret_v
, tup_v
);
1062 char *s
= String_val (ptr_v
);
1064 if (trylock ("ml_gettext")) {
1065 ret_v
= Val_int (0);
1069 page
= parse_pointer ("ml_getlink", s
);
1071 link
= getlink (page
, Int_val (x_v
), Int_val (y_v
));
1078 obj
= fz_arrayget (link
->dest
, 0);
1079 if (fz_isindirect (obj
)) {
1080 pageno
= pdf_findpageobject (state
.xref
, obj
) - 1;
1082 else if (fz_isint (obj
)) {
1083 pageno
= fz_toint (obj
);
1086 if (fz_arraylen (link
->dest
) > 3) {
1087 p
.x
= fz_toint (fz_arrayget (link
->dest
, 2));
1088 p
.y
= fz_toint (fz_arrayget (link
->dest
, 3));
1089 p
= fz_transformpoint (page
->pagedim
->ctm
, p
);
1096 tup_v
= caml_alloc_tuple (2);
1097 ret_v
= caml_alloc_small (1, 1);
1098 Field (tup_v
, 0) = Val_int (pageno
);
1099 Field (tup_v
, 1) = Val_int (p
.y
);
1100 Field (ret_v
, 0) = tup_v
;
1103 ret_v
= Val_int (0);
1105 unlock ("ml_getlink");
1111 CAMLprim value
ml_gettext (value ptr_v
, value rect_v
, value oy_v
, value rectsel_v
)
1113 CAMLparam4 (ptr_v
, rect_v
, oy_v
, rect_v
);
1118 char *s
= String_val (ptr_v
);
1119 int rectsel
= Bool_val (rectsel_v
);
1120 int i
, bx0
, bx1
, by0
, by1
, x0
, x1
, y0
, y1
, oy
;
1122 /* stop GCC from complaining about uninitialized variables */
1123 int rx0
= rx0
, rx1
= rx1
, ry0
= ry0
, ry1
= ry1
;
1125 if (trylock ("ml_gettext")) {
1129 page
= parse_pointer ("ml_gettext", s
);
1131 oy
= Int_val (oy_v
);
1132 p1
.x
= Int_val (Field (rect_v
, 0));
1133 p1
.y
= Int_val (Field (rect_v
, 1));
1134 p2
.x
= Int_val (Field (rect_v
, 2));
1135 p2
.y
= Int_val (Field (rect_v
, 3));
1138 glEnable (GL_BLEND
);
1139 glPolygonMode (GL_FRONT_AND_BACK
, GL_LINE
);
1140 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1141 glColor4f (0, 0, 0, 0.2);
1142 glRecti (p1
.x
, p1
.y
, p2
.x
, p2
.y
);
1143 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1144 glDisable (GL_BLEND
);
1147 ctm
= page
->pagedim
->ctm
;
1152 page
->text
= fz_newtextspan ();
1153 tdev
= fz_newtextdevice (page
->text
);
1154 error
= pdf_runcontentstream (tdev
, page
->pagedim
->ctm
, state
.xref
,
1155 page
->drawpage
->resources
,
1156 page
->drawpage
->contents
);
1157 if (error
) die (error
);
1158 fz_freedevice (tdev
);
1163 printf ("BBox %f %f %f %f\n", p1
.x
, p1
.y
, p2
.x
, p2
.y
);
1164 p1
.x
+= page
->pixmap
->x
;
1165 p1
.y
+= page
->pixmap
->y
;
1166 p2
.x
+= page
->pixmap
->x
;
1167 p2
.y
+= page
->pixmap
->y
;
1172 printf ("BBox %d %d %d %d %d %d\n", x0
, y0
, x1
, y1
, oy
, page
->pageno
);
1174 for (span
= page
->text
; span
; span
= span
->next
) {
1177 /* fz_debugtextspanxml (span); */
1178 for (i
= 0; i
< span
->len
; ++i
) {
1181 bx0
= span
->text
[i
].bbox
.x0
;
1182 bx1
= span
->text
[i
].bbox
.x1
;
1183 by0
= span
->text
[i
].bbox
.y0
+ oy
;
1184 by1
= span
->text
[i
].bbox
.y1
+ oy
;
1186 if ((bx1
>= x0
&& bx0
<= x1
&& by1
>= y0
&& by0
<= y1
)) {
1188 rx0
= bx0
- page
->pixmap
->x
;
1189 rx1
= bx1
- page
->pixmap
->x
;
1195 c
= span
->text
[i
].c
;
1197 if ((isprint (c
) && !isspace (c
))) {
1199 bx0
-= page
->pixmap
->x
;
1200 bx1
-= page
->pixmap
->x
;
1201 glEnable (GL_BLEND
);
1202 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1203 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1204 glColor4f (0.5, 0.5, 0.0, 0.6);
1205 glRecti (bx0
, by0
, bx1
, by1
);
1206 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1207 glDisable (GL_BLEND
);
1209 if (isprint (c
) || c
==' ') {
1224 glEnable (GL_BLEND
);
1225 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1226 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1227 glColor4f (0.5, 0.5, 0.0, 0.6);
1228 glRecti (rx0
, ry0
, rx1
, ry1
);
1229 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1230 glDisable (GL_BLEND
);
1234 if (seen
&& span
->eol
) {
1235 x0
= page
->pixmap
->x
;
1236 putc ('\n', stdout
);
1239 unlock ("ml_gettext");
1242 CAMLreturn (Val_unit
);
1245 static void initgl (void)
1248 if (strstr ((char *) glGetString (GL_EXTENSIONS
),
1249 "GL_ATI_fragment_shader")) {
1250 /* Here, with MESA, rv280, powerpc32: BGRA(rev) is slow while
1251 ABGR is fast, so fix things in the shader */
1252 state
.texform
= GL_ABGR_EXT
;
1253 state
.texty
= GL_UNSIGNED_INT_8_8_8_8
;
1255 glBindFragmentShaderATI (1);
1256 glBeginFragmentShaderATI ();
1258 glSampleMapATI (GL_REG_0_ATI
, GL_TEXTURE0_ARB
, GL_SWIZZLE_STR_ATI
);
1260 glColorFragmentOp1ATI (GL_MOV_ATI
,
1261 GL_REG_1_ATI
, GL_RED_BIT_ATI
, GL_NONE
,
1262 GL_REG_0_ATI
, GL_BLUE
, GL_NONE
);
1263 glColorFragmentOp1ATI (GL_MOV_ATI
,
1264 GL_REG_1_ATI
, GL_BLUE_BIT_ATI
, GL_NONE
,
1265 GL_REG_0_ATI
, GL_RED
, GL_NONE
);
1266 glColorFragmentOp1ATI (
1268 GL_REG_0_ATI
, GL_RED_BIT_ATI
| GL_BLUE_BIT_ATI
, GL_NONE
,
1269 GL_REG_1_ATI
, GL_NONE
, GL_NONE
1272 glEndFragmentShaderATI ();
1276 state
.texform
= GL_BGRA_EXT
;
1277 state
.texty
= GL_UNSIGNED_INT_8_8_8_8_REV
;
1280 state
.texform
= GL_BGRA_EXT
;
1281 state
.texty
= GL_UNSIGNED_INT_8_8_8_8
;
1285 CAMLprim value
ml_init (value sock_v
)
1288 CAMLparam1 (sock_v
);
1290 state
.texcount
= 128;
1291 state
.sliceheight
= 64;
1293 state
.texids
= calloc (state
.texcount
* sizeof (*state
.texids
), 1);
1294 if (!state
.texids
) {
1295 err (1, "calloc texids %zu", state
.texcount
* sizeof (*state
.texids
));
1298 state
.texowners
= calloc (state
.texcount
* sizeof (*state
.texowners
), 1);
1299 if (!state
.texowners
) {
1300 err (1, "calloc texowners %zu",
1301 state
.texcount
* sizeof (*state
.texowners
));
1304 glGenTextures (state
.texcount
, state
.texids
);
1306 state
.sock
= Int_val (sock_v
);
1309 state
.cache
= fz_newglyphcache ();
1311 errx (1, "fz_newglyphcache failed");
1314 ret
= pthread_create (&state
.thread
, NULL
, mainloop
, NULL
);
1316 errx (1, "pthread_create: %s", strerror (errno
));
1319 CAMLreturn (Val_unit
);