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#include <fitz.h>
#include <mupdf.h>
int showtree = 0;
float zoom = 1.0;
char *namefmt = nil;
fz_renderer *gc;
int nbands = 1;
int verbose = 0;
void usage()
{
fprintf(stderr,
"usage: pdfrip [options] file.pdf pageranges\n"
" -b -\trender page in N bands (default 1)\n"
" -d -\tpassword for decryption\n"
" -o -\toutput filename format (default out-%%03d.ppm)\n"
" -t \tshow display tree\n"
" -v \tverbose\n"
" -z -\tzoom factor (default 1.0 = 72 dpi)\n"
);
exit(1);
}
/*
* Draw page
*/
void showpage(pdf_xref *xref, fz_obj *pageobj, int pagenum)
{
fz_error *error;
pdf_page *page;
char namebuf[256];
char buf[128];
fz_pixmap *pix;
fz_matrix ctm;
fz_irect bbox;
int fd;
int x, y;
int w, h;
int b, bh;
if (verbose)
printf("page %d\n", pagenum);
sprintf(namebuf, namefmt, pagenum);
error = pdf_loadpage(&page, xref, pageobj);
if (error)
fz_abort(error);
if (showtree)
{
fz_debugobj(pageobj);
printf("\n");
printf("page\n");
printf(" mediabox [ %g %g %g %g ]\n",
page->mediabox.min.x, page->mediabox.min.y,
page->mediabox.max.x, page->mediabox.max.y);
printf(" rotate %d\n", page->rotate);
printf(" resources\n");
fz_debugobj(page->resources);
printf("\n");
printf("tree\n");
fz_debugtree(page->tree);
printf("endtree\n");
}
ctm = fz_concat(fz_translate(0, -page->mediabox.max.y),
fz_scale(zoom, -zoom));
bbox = fz_roundrect(page->mediabox);
bbox.min.x = bbox.min.x * zoom;
bbox.min.y = bbox.min.y * zoom;
bbox.max.x = bbox.max.x * zoom;
bbox.max.y = bbox.max.y * zoom;
w = bbox.max.x - bbox.min.x;
h = bbox.max.y - bbox.min.y;
bh = h / nbands;
fd = open(namebuf, O_BINARY|O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (fd < 0)
fz_abort(fz_throw("open %s failed: %s", namebuf, strerror(errno)));
sprintf(buf, "P6\n%d %d\n255\n", w, bh * nbands);
write(fd, buf, strlen(buf));
error = fz_newpixmap(&pix, bbox.min.x, bbox.min.y, w, bh, 4);
if (error)
fz_abort(error);
for (b = 0; b < nbands; b++)
{
if (verbose)
printf("render band %d of %d\n", b + 1, nbands);
memset(pix->samples, 0xff, pix->w * pix->h * 4);
error = fz_rendertreeover(gc, pix, page->tree, ctm);
if (error)
fz_abort(error);
for (y = 0; y < pix->h; y++)
{
unsigned char *src = pix->samples + y * pix->w * 4;
unsigned char *dst = src;
for (x = 0; x < pix->w; x++)
{
dst[x * 3 + 0] = src[x * 4 + 1];
dst[x * 3 + 1] = src[x * 4 + 2];
dst[x * 3 + 2] = src[x * 4 + 3];
}
write(fd, dst, pix->w * 3);
}
pix->y += bh;
}
fz_droppixmap(pix);
close(fd);
}
int main(int argc, char **argv)
{
fz_error *error;
char *filename;
pdf_xref *xref;
pdf_pagetree *pages;
int c;
char *password = "";
fz_cpudetect();
fz_accelerate();
while ((c = getopt(argc, argv, "Vtvz:d:o:b:")) != -1)
{
switch (c)
{
case 't': ++showtree; break;
case 'v': ++verbose; break;
case 'd': password = optarg; break;
case 'z': zoom = atof(optarg); break;
case 'o': namefmt = optarg; break;
case 'b': nbands = atoi(optarg); break;
default: usage();
}
}
if (argc - optind == 0)
usage();
filename = argv[optind++];
if (!namefmt)
{
#if 1
namefmt = "out-%03d.ppm";
#else
char namebuf[256];
char *s;
s = strrchr(filename, '/');
if (!s)
s = filename;
else
s ++;
strcpy(namebuf, s);
s = strrchr(namebuf, '.');
if (s)
strcpy(s, "-%03d.ppm");
else
strcat(namebuf, "-%03d.ppm");
namefmt = namebuf;
#endif
}
if (verbose)
printf("loading pdf: '%s'\n", filename);
error = pdf_newxref(&xref);
if (error)
fz_abort(error);
error = pdf_loadxref(xref, filename);
if (error)
fz_abort(error);
error = pdf_decryptxref(xref);
if (error)
fz_abort(error);
if (xref->crypt)
{
error = pdf_setpassword(xref->crypt, password);
if (error)
fz_abort(error);
}
error = pdf_loadpagetree(&pages, xref);
if (error)
fz_abort(error);
if (verbose)
pdf_debugpagetree(pages);
if (optind == argc)
printf("%d pages\n", pdf_getpagecount(pages));
error = fz_newrenderer(&gc, pdf_devicergb, 0, 1024 * 512);
if (error)
fz_abort(error);
for ( ; optind < argc; optind++)
{
int spage, epage, page;
char *spec = argv[optind];
char *dash = strchr(spec, '-');
if (dash == spec)
spage = epage = 1;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash+1);
else
epage = pdf_getpagecount(pages);
}
if (spage > epage)
page = spage, spage = epage, epage = page;
for (page = spage; page <= epage; page++)
{
if (page < 1 || page > pdf_getpagecount(pages))
fprintf(stderr, "page out of bounds: %d\n", page);
else
{
showpage(xref, pdf_getpageobject(pages, page - 1), page);
}
}
}
fz_droprenderer(gc);
pdf_closexref(xref);
return 0;
}
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