/*
*/
-#include "ocr.h"
+#include "structure.h"
#include <X11/Xlib.h>
#include <X11/extensions/XTest.h>
#include <X11/keysym.h>
+#include <X11/Xutil.h>
CanonImage *page_images[MAX_PAGES];
int npages;
+static XWindowAttributes attr;
static Window id;
static Display *disp;
static struct timeval tv_startup;
+static unsigned wwidth, wheight;
+static int wxpos, wypos;
+
+DEBUG_DEFINE_DEBUGF(pages)
static KeyCode keycode(KeySym sym) {
return XKeysymToKeycode(disp,sym);
}
-static void check_exitstatus(int st) {
- eassert(WIFEXITED(st));
- eassert(!WEXITSTATUS(st));
-}
-
-static void check_pclose(FILE *f, char *cmd) {
- int r;
- eassert(!ferror(f));
- r= fgetc(f); eassert(r==EOF); eassert(feof(f));
- r= pclose(f); eassert(r>=0); check_exitstatus(r);
- free(cmd);
-}
-
-#if 0
-static CanonImage *screenshot_now(void) {
- char *cmd;
- CanonImage *ci;
- int r;
-
- r= asprintf(&cmd, "xwd -silent -id 0x%lx | xwdtopnm", (unsigned long)id);
- eassert(r>=0);
- FILE *f= popen(cmd,"r"); eassert(f);
- ci= file_read_image(f);
- check_pclose(f, cmd);
- return ci;
-}
-#endif
-
-static void screenshot_startup(void) {
+void screenshot_startup(void) {
int r;
disp= XOpenDisplay(0); eassert(disp);
r= gettimeofday(&tv_startup,0); eassert(!r);
}
-#if 0
-static CanonImage *single_page(void) {
- int r;
- r= XRaiseWindow(disp, id); eassert(r);
- r= XSync(disp, False); eassert(r);
- return screenshot_now();
-}
-#endif
-
/*---------- pager ----------*/
-typedef struct {
- size_t len;
- unsigned char d[];
-} Snapshot;
+typedef XImage Snapshot;
-static size_t snapshot_alloc= 1024;
static double last_input;
-static const double min_update_allowance= 0.5;
+static const double min_update_allowance= 0.25;
static double timestamp(void) {
struct timeval tv;
r= gettimeofday(&tv,0); eassert(!r);
double t= (tv.tv_sec - tv_startup.tv_sec) +
(tv.tv_usec - tv_startup.tv_usec) * 1e-6;
- fprintf(stderr,"%f\n",t);
+ debugf("PAGING %f\n",t);
return t;
}
static void delay(double need_sleep) {
int r;
- fprintf(stderr,"PAGING delay %f\n",need_sleep);
+ debugf("PAGING delay %f\n",need_sleep);
r= usleep(need_sleep * 1e6); eassert(!r);
}
int i;
for (i=0; i<25; i++)
send_key(XK_Prior);
- fprintf(stderr,"PAGING PageUp x %d\n",i);
+ debugf("PAGING PageUp x %d\n",i);
sync_after_input();
}
static void send_pgdown(void) {
send_key(XK_Next);
- fprintf(stderr,"PAGING PageDown\n");
+ debugf("PAGING PageDown\n");
sync_after_input();
}
+static void free_snapshot(Snapshot **io) {
+ if (*io) XDestroyImage(*io);
+ *io= 0;
+}
+
static void snapshot(Snapshot **output) {
- char *cmd;
- int r;
+// char *cmd;
+// int r;
+// XImage *xim;
- free(*output); *output=0;
-
- fprintf(stderr,"PAGING snapshot\n");
-
- r= asprintf(&cmd, "xwd -silent -id 0x%lx", (unsigned long)id); eassert(r>=0);
- FILE *f= popen(cmd,"r"); eassert(f);
+ free_snapshot(output);
- int need_alloc=1;
- size_t used=0;
- for (;;) {
- size_t allow= snapshot_alloc - used;
- if (!allow) {
- snapshot_alloc <<= 1;
- need_alloc= 1;
- fprintf(stderr,"PAGING snapshot grow %ld\n", (long)snapshot_alloc);
- continue;
- }
- if (need_alloc) {
- *output= realloc(*output, sizeof(**output) + snapshot_alloc);
- eassert(*output);
- need_alloc= 0;
- }
- size_t got= fread((*output)->d, 1, allow, f);
- if (got==0) break;
- used += got;
- }
- check_pclose(f,cmd);
+ debugf("PAGING snapshot\n");
- (*output)->len= used;
- snapshot_alloc= used+1;
- *output= realloc(*output, sizeof(**output) + snapshot_alloc);
- eassert(*output);
+ timestamp();
+ *output= XGetImage(disp,id, 0,0, wwidth,wheight, AllPlanes, ZPixmap);
+ timestamp();
- fprintf(stderr,"PAGING snapshot len=%ld\n", (long)used);
+ debugf("PAGING snapshot done.\n");
}
static int identical(const Snapshot *a, const Snapshot *b) {
- return !(memcmp(a, b, sizeof(*a)) ||
- memcmp(a->d, b->d, a->len));
+ if (!(a->width == b->width &&
+ a->height == b->height &&
+ a->bytes_per_line == b->bytes_per_line &&
+ a->format == b->format))
+ return 0;
+ return !memcmp(a->data, b->data, a->bytes_per_line * a->height);
}
static void wait_for_stability(Snapshot **output,
/* waits longer if we're going to return an image identical to previously
* if previously==0, all images are considered identical to it */
- fprintf(stderr,"PAGING wait_for_stability"
+ debugf("PAGING wait_for_stability"
" last_input=%f previously=%p\n",
last_input, previously);
if (!with_keypress &&
!(previously && identical(*output,previously))) {
- fprintf(stderr,"PAGING wait_for_stability simple\n");
+ debugf("PAGING wait_for_stability simple\n");
break;
}
if (last && identical(*output,last)) {
- fprintf(stderr,"PAGING wait_for_stability stabilised\n");
+ debugf("PAGING wait_for_stability stabilised\n");
break;
}
- fprintf(stderr,"PAGING wait_for_stability retry\n");
+ debugf("PAGING wait_for_stability retry\n");
- free(last); last=*output; *output=0;
+ free_snapshot(&last); last=*output; *output=0;
if (with_keypress)
with_keypress();
delay(0.5);
}
- free(last);
- fprintf(stderr,"PAGING wait_for_stability done.\n");
+ free_snapshot(&last);
+ debugf("PAGING wait_for_stability done.\n");
}
-static void raise_and_set_focus(void) {
+static void raise_and_get_details(void) {
int r;
- XWindowAttributes attr;
- int xpos,ypos, evbase,errbase,majver,minver;
- unsigned width,height,bd,depth;
+ int evbase,errbase,majver,minver;
+ unsigned bd,depth;
Window dummy;
- fprintf(stderr,"PAGING raise_and_set_focus\n");
+ debugf("PAGING raise_and_get_details\n");
r= XTestQueryExtension(disp, &evbase,&errbase,&majver,&minver);
eassert(r==True);
r= XRaiseWindow(disp, id); eassert(r);
r= XGetWindowAttributes(disp, id, &attr); eassert(r);
- r= XGetGeometry(disp,id, &attr.root,&xpos,&ypos,&width,&height, &bd,&depth);
+ r= XGetGeometry(disp,id, &attr.root,
+ &wxpos,&wypos, &wwidth,&wheight,
+ &bd,&depth);
eassert(r);
- r= XTranslateCoordinates(disp, id,attr.root, 160,160, &xpos,&ypos,
+ r= XTranslateCoordinates(disp, id,attr.root, 160,160, &wxpos,&wypos,
&dummy);
eassert(r);
+}
+static void set_focus(void) {
int screen= XScreenNumberOfScreen(attr.screen);
- XTestFakeMotionEvent(disp,screen, xpos, ypos, 0);
+
+ debugf("PAGING set_focus\n");
+
+ XTestFakeMotionEvent(disp,screen, wxpos,wypos, 0);
XTestFakeButtonEvent(disp,1,1, 50);
XTestFakeButtonEvent(disp,1,0, 50);
sync_after_input();
- fprintf(stderr,"PAGING raise_and_set_focus done.\n");
+ debugf("PAGING raise_and_set_focus done.\n");
}
-static void store_page(int pageno, Snapshot *sn) {
- pid_t converter, paster;
- eassert(pageno < MAX_PAGES);
- int paste[2], results[2];
- FILE *err;
- int r;
-
- eassert(!fflush(stdout));
- eassert(!fflush(stderr));
-
- r= pipe(paste); eassert(!r);
- r= pipe(results); eassert(!r);
- err= tmpfile(); eassert(err);
-
- converter= fork(); eassert(converter!=-1);
- if (!converter) {
- r= dup2(paste[0],0); eassert(r==0);
- r= dup2(results[1],1); eassert(r==1);
- r= dup2(2,4); eassert(r==4); /* fileno(errn) > 4, see above */
- r= dup2(fileno(err),2); eassert(r==2);
- close(paste[0]);
- close(paste[1]);
- close(results[0]);
- close(results[1]);
- execlp("xwdtopnm", "xwdtopnm",(char*)0);
- dup2(4,2);
- eassert(!"xwdtopnm exec failure");
- }
+#define SAMPLEMASK 0xfful
- paster= fork(); eassert(paster!=-1);
- if (!paster) {
- FILE *f= fdopen(paste[1],"w"); eassert(f);
- close(paste[0]);
- close(results[0]);
- close(results[1]);
- size_t did= fwrite(sn->d, 1, sn->len, f);
- eassert(did==sn->len);
- eassert(!fclose(f));
- exit(0);
- }
+typedef struct {
+ int lshift, rshift;
+} ShMask;
- close(paste[0]);
- close(paste[1]);
- close(results[1]);
-
- FILE *f= fdopen(results[0],"r");
- int c1= fgetc(f);
- if (c1!=EOF) {
- ungetc(c1,f);
- page_images[pageno]= file_read_image(f);
- r= fgetc(f); eassert(r==EOF); eassert(!ferror(f)); eassert(feof(f));
- fclose(f);
+static void compute_shift_mask(ShMask *sm, unsigned long ximage_mask) {
+ sm->lshift= 0;
+ sm->rshift= 0;
+
+ for (;;) {
+ if (ximage_mask <= (SAMPLEMASK>>1)) {
+ sm->lshift++; ximage_mask <<= 1;
+ } else if (ximage_mask > SAMPLEMASK) {
+ sm->rshift++; ximage_mask >>= 1;
+ } else {
+ break;
+ }
+ assert(!(sm->lshift && sm->rshift));
}
+ assert(sm->lshift < LONG_BIT);
+ assert(sm->rshift < LONG_BIT);
+}
- pid_t got_conv,got_paste;
- int st_conv, st_paste;
+static CanonImage *convert_page(Snapshot *sn) {
+ ShMask shiftmasks[3];
+ CanonImage *im;
+
+ fprintf(screenshots_file,
+ "P6\n"
+ "%d %d\n"
+ "255\n", sn->width, sn->height);
+
+#define COMPUTE_SHIFT_MASK(ix, rgb) \
+ compute_shift_mask(&shiftmasks[ix], sn->rgb##_mask)
+ COMPUTE_SHIFT_MASK(0, red);
+ COMPUTE_SHIFT_MASK(1, green);
+ COMPUTE_SHIFT_MASK(2, blue);
+
+ CANONICALISE_IMAGE(im, sn->width, sn->height, {
+ long xrgb= XGetPixel(sn, x, y);
+ int i;
+ rgb= 0;
+ for (i=0; i<3; i++) {
+ rgb <<= 8;
+ unsigned long sample=
+ ((xrgb << shiftmasks[i].lshift)
+ >> shiftmasks[i].rshift) & SAMPLEMASK;
+ rgb |= sample;
+ fputc(sample, screenshots_file);
+ }
+ });
- got_conv= waitpid(converter,&st_conv,0); eassert(got_conv==converter);
- got_paste= waitpid(paster,&st_paste,0); eassert(got_paste==paster);
+ eassert(!fflush(screenshots_file));
- if (!st_conv &&
- (!st_paste || (WIFSIGNALED(st_paste) && WTERMSIG(st_paste)==SIGPIPE))
- && c1!=EOF) {
- fclose(err);
- return;
- }
- rewind(err); int c; while ((c=getc(err))!=EOF) fputc(c,stderr);
- fprintf(stderr, "convert: subprocess statuses: %d %d\n", st_conv, st_paste);
- _exit(127);
+ return im;
}
-static void read_pages(void) {
+void take_screenshots(void) {
Snapshot *current=0, *last=0;
+ CanonImage *test;
- raise_and_set_focus();
+ /* find the window and check it's on the right kind of screen */
+ raise_and_get_details();
+ wait_for_stability(¤t,0,0);
+ test= convert_page(current);
+ find_structure(test);
+ free(test);
/* page to the top - keep pressing page up until the image stops changing */
+ set_focus();
wait_for_stability(¤t,0, send_pgup_many);
/* now to actually page down */
for (;;) {
- fprintf(stderr,"PAGING page %d\n",npages);
- store_page(npages, current);
- free(last); last=current; current=0;
- fprintf(stderr,"PAGING page %d converted\n",npages);
+ debugf("paging page %d\n",npages);
+
+ eassert(npages < MAX_PAGES);
+ page_images[npages]= convert_page(current);
+ free_snapshot(&last); last=current; current=0;
+
+ debugf("PAGING page %d converted\n",npages);
wait_for_stability(¤t,last, 0);
if (npages && /* first pagedown doesn't do much */
identical(current,last)) {
- free(current);
+ free_snapshot(¤t);
break;
}
send_pgdown();
npages++;
}
- fprintf(stderr,"PAGING all done.\n");
+ debugf("PAGING all done.\n");
}
-int main(int argc, char **argv) {
- screenshot_startup();
-
- id= strtoul(*++argv,0,0);
+void take_one_screenshot(void) {
+ Snapshot *current=0;
+
+ raise_and_get_details();
+ sync_after_input();
+ wait_for_stability(¤t,0,0);
+ page_images[0]= convert_page(current);
+ npages= 1;
+}
- read_pages();
- return 0;
+void set_yppclient_window(unsigned long wul) {
+ id= wul;
}
+void find_yppclient_window(void) {
+ if (id) return;
+ eassert(!"finding client window NYI");
+}