コード例 #1
0
static void
jpx_ycc_to_rgb(fz_context *ctx, fz_pixmap *pix, int cbsign, int crsign)
{
	int w = pix->w;
	int h = pix->h;
	int stride = pix->stride;
	int x, y;

	for (y = 0; y < h; y++)
	{
		unsigned char * row = &pix->samples[stride * y];
		for (x = 0; x < w; x++)
		{
			int ycc[3];
			ycc[0] = row[x * 3 + 0];
			ycc[1] = row[x * 3 + 1];
			ycc[2] = row[x * 3 + 2];

			/* consciously skip Y */
			if (cbsign)
				ycc[1] -= 128;
			if (crsign)
				ycc[2] -= 128;

			row[x * 3 + 0] = fz_clampi(ycc[0] + 1.402f * ycc[2], 0, 255);
			row[x * 3 + 1] = fz_clampi(ycc[0] - 0.34413f * ycc[1] - 0.71414f * ycc[2], 0, 255);
			row[x * 3 + 2] = fz_clampi(ycc[0] + 1.772f * ycc[1], 0, 255);
		}
	}
}
コード例 #2
0
ファイル: pdfinfo.c プロジェクト: ArphonePei/PDFConverter
static void
showinfo(char *filename, int show, char *pagelist)
{
	int page, spage, epage;
	char *spec, *dash;
	int allpages;
	int pagecount;

	if (!doc)
		infousage();

	allpages = !strcmp(pagelist, "1-");

	pagecount = pdf_count_pages(doc);
	spec = fz_strsep(&pagelist, ",");
	while (spec && pagecount)
	{
		dash = strchr(spec, '-');

		if (dash == spec)
			spage = epage = pagecount;
		else
			spage = epage = atoi(spec);

		if (dash)
		{
			if (strlen(dash) > 1)
				epage = atoi(dash + 1);
			else
				epage = pagecount;
		}

		if (spage > epage)
			page = spage, spage = epage, epage = page;

		spage = fz_clampi(spage, 1, pagecount);
		epage = fz_clampi(epage, 1, pagecount);

		if (allpages)
			printf("Retrieving info from pages %d-%d...\n", spage, epage);
		for (page = spage; page <= epage; page++)
		{
			gatherpageinfo(page, show);
			if (!allpages)
			{
				printf("Page %d:\n", page);
				printinfo(filename, show, page);
				printf("\n");
			}
		}

		spec = fz_strsep(&pagelist, ",");
	}

	if (allpages)
		printinfo(filename, show, -1);
}
コード例 #3
0
ファイル: pdfmerge.c プロジェクト: gavanx/mupdf-1.9a-source
static void merge_range(char *range)
{
	int page, spage, epage, src_pagecount, des_pagecount;
	char *spec, *dash;
	pdf_graft_map *graft_map;

	src_pagecount = fz_count_pages(ctx, (fz_document*) doc_src);
	des_pagecount = fz_count_pages(ctx, (fz_document*) doc_des);
	spec = fz_strsep(&range, ",");
	graft_map = pdf_new_graft_map(ctx, doc_src);

	fz_try(ctx)
	{
		while (spec)
		{
			dash = strchr(spec, '-');

			if (dash == spec)
				spage = epage = src_pagecount;
			else
				spage = epage = atoi(spec);

			if (dash)
			{
				if (strlen(dash) > 1)
					epage = atoi(dash + 1);
				else
					epage = src_pagecount;
			}

			spage = fz_clampi(spage, 1, src_pagecount);
			epage = fz_clampi(epage, 1, src_pagecount);

			if (spage < epage)
				for (page = spage; page <= epage; page++, des_pagecount++)
					page_merge(page, des_pagecount + 1, graft_map);
			else
				for (page = spage; page >= epage; page--, des_pagecount++)
					page_merge(page, des_pagecount + 1, graft_map);
			spec = fz_strsep(&range, ",");
		}
	}
	fz_always(ctx)
	{
		pdf_drop_graft_map(ctx, graft_map);
	}
	fz_catch(ctx)
	{
		fz_rethrow(ctx);
	}
}
コード例 #4
0
ファイル: image.c プロジェクト: azaleafisitania/sumatrapdf
/* cf. http://bugs.ghostscript.com/show_bug.cgi?id=693517 */
static void
fz_unblend_masked_tile(fz_context *ctx, fz_pixmap *tile, fz_image *image)
{
	/* fz_image_get_pixmap tends to return too large tiles */
	int min_w = 1 << (int)floorf(logf(tile->w) / logf(2));
	int min_h = 1 << (int)floorf(logf(tile->h) / logf(2));
	fz_pixmap *mask = image->mask->get_pixmap(ctx, image->mask, min_w, min_h);
	unsigned char *s = mask->samples, *end = s + mask->w * mask->h;
	unsigned char *d = tile->samples;
	int k;

	if (tile->w != mask->w || tile->h != mask->h)
	{
		fz_warn(ctx, "mask must be of same size as image for /Matte");
		fz_drop_pixmap(ctx, mask);
		return;
	}

	for (; s < end; s++, d += tile->n)
	{
		if (!*s)
			continue;
		for (k = 0; k < image->n; k++)
			d[k] = fz_clampi(image->colorkey[k] + (d[k] - image->colorkey[k]) * 255 / *s, 0, 255);
	}

	fz_drop_pixmap(ctx, mask);
	tile->single_bit = 0; /* SumatraPDF: allow optimizing 1-bit pixmaps */
}
コード例 #5
0
ファイル: gl-main.c プロジェクト: ArtifexSoftware/mupdf
static void reload(void)
{
    fz_drop_outline(ctx, outline);
    fz_drop_document(ctx, doc);

    doc = fz_open_document(ctx, filename);
    if (fz_needs_password(ctx, doc))
    {
        if (!fz_authenticate_password(ctx, doc, password))
        {
            fprintf(stderr, "Invalid password.\n");
            exit(1);
        }
    }

    fz_layout_document(ctx, doc, layout_w, layout_h, layout_em);

    fz_try(ctx)
    outline = fz_load_outline(ctx, doc);
    fz_catch(ctx)
    outline = NULL;

    pdf = pdf_specifics(ctx, doc);
    if (pdf)
        pdf_enable_js(ctx, pdf);

    currentpage = fz_clampi(currentpage, 0, fz_count_pages(ctx, doc) - 1);

    render_page();
    update_title();
}
コード例 #6
0
ファイル: image.c プロジェクト: ericyeh92094/mupdf-printer
static void
fz_unblend_masked_tile(fz_context *ctx, fz_pixmap *tile, fz_image *image)
{
    fz_pixmap *mask = fz_image_get_pixmap(ctx, image->mask, tile->w, tile->h);
    unsigned char *s = mask->samples, *end = s + mask->w * mask->h;
    unsigned char *d = tile->samples;
    int k;

    if (tile->w != mask->w || tile->h != mask->h)
    {
        fz_warn(ctx, "mask must be of same size as image for /Matte");
        fz_drop_pixmap(ctx, mask);
        return;
    }

    for (; s < end; s++, d += tile->n)
    {
        if (*s == 0)
            for (k = 0; k < image->n; k++)
                d[k] = image->colorkey[k];
        else
            for (k = 0; k < image->n; k++)
                d[k] = fz_clampi(image->colorkey[k] + (d[k] - image->colorkey[k]) * 255 / *s, 0, 255);
    }

    fz_drop_pixmap(ctx, mask);
}
コード例 #7
0
ファイル: load-gif.c プロジェクト: arbitrary-dev/mupdf
static const unsigned char *
gif_read_lsd(fz_context *ctx, struct info *info, const unsigned char *p, const unsigned char *end)
{
	if (end - p < 7)
		fz_throw(ctx, FZ_ERROR_GENERIC, "premature end in logical screen descriptor in gif image");

	info->width = p[1] << 8 | p[0];
	info->height = p[3] << 8 | p[2];
	if (info->width <= 0)
		fz_throw(ctx, FZ_ERROR_GENERIC, "image width must be > 0");
	if (info->height <= 0)
		fz_throw(ctx, FZ_ERROR_GENERIC, "image height must be > 0");
	if (info->height > UINT_MAX / info->width / 3 /* components */)
		fz_throw(ctx, FZ_ERROR_GENERIC, "image dimensions might overflow");

	info->has_gct = (p[4] >> 7) & 0x1;
	if (info->has_gct)
	{
		info->gct_entries = 1 << ((p[4] & 0x7) + 1);
		info->gct_background = fz_clampi(p[5], 0, info->gct_entries - 1);
	}
	info->aspect = p[6];

	info->xres = 96;
	info->yres= 96;
	if (info->aspect > 0)
		info->yres = (((float) info->aspect + 15) / 64) * 96;

	return p + 7;
}
コード例 #8
0
static fz_colorspace *
load_indexed(pdf_document *doc, pdf_obj *array)
{
	fz_context *ctx = doc->ctx;
	pdf_obj *baseobj = pdf_array_get(array, 1);
	pdf_obj *highobj = pdf_array_get(array, 2);
	pdf_obj *lookupobj = pdf_array_get(array, 3);
	fz_colorspace *base = NULL;
	fz_colorspace *cs;
	int i, n, high;
	unsigned char *lookup = NULL;

	fz_var(base);
	fz_var(lookup);

	fz_try(ctx)
	{
		base = pdf_load_colorspace(doc, baseobj);

		high = pdf_to_int(highobj);
		high = fz_clampi(high, 0, 255);
		n = base->n * (high + 1);
		lookup = fz_malloc_array(ctx, 1, n);

		if (pdf_is_string(lookupobj) && pdf_to_str_len(lookupobj) >= n)
		{
			unsigned char *buf = (unsigned char *) pdf_to_str_buf(lookupobj);
			for (i = 0; i < n; i++)
				lookup[i] = buf[i];
		}
		else if (pdf_is_indirect(lookupobj))
		{
			fz_stream *file = NULL;

			fz_var(file);

			fz_try(ctx)
			{
				file = pdf_open_stream(doc, pdf_to_num(lookupobj), pdf_to_gen(lookupobj));
				i = fz_read(file, lookup, n);
				if (i < n)
					memset(lookup+i, 0, n-i);
			}
			fz_always(ctx)
			{
				fz_close(file);
			}
			fz_catch(ctx)
			{
				fz_rethrow_message(ctx, "cannot open colorspace lookup table (%d 0 R)", pdf_to_num(lookupobj));
			}
		}
		else
		{
			fz_rethrow_message(ctx, "cannot parse colorspace lookup table");
		}

		cs = fz_new_indexed_colorspace(ctx, base, high, lookup);
	}
コード例 #9
0
ファイル: gl-main.c プロジェクト: ArtifexSoftware/mupdf
static void jump_to_page(int newpage)
{
    newpage = fz_clampi(newpage, 0, fz_count_pages(ctx, doc) - 1);
    clear_future();
    push_history();
    currentpage = newpage;
    push_history();
}
コード例 #10
0
ファイル: pdfpages.c プロジェクト: Leadrive/mupdf-converter
static int
showpages(fz_context *ctx, pdf_document *doc, fz_output *out, char *pagelist)
{
	int page, spage, epage;
	char *spec, *dash;
	int pagecount;
	int ret = 0;

	if (!doc)
		infousage();

	pagecount = pdf_count_pages(ctx, doc);
	spec = fz_strsep(&pagelist, ",");
	while (spec && pagecount)
	{
		dash = strchr(spec, '-');

		if (dash == spec)
			spage = epage = pagecount;
		else
			spage = epage = atoi(spec);

		if (dash)
		{
			if (strlen(dash) > 1)
				epage = atoi(dash + 1);
			else
				epage = pagecount;
		}

		if (spage > epage)
			page = spage, spage = epage, epage = page;

		spage = fz_clampi(spage, 1, pagecount);
		epage = fz_clampi(epage, 1, pagecount);

		for (page = spage; page <= epage; page++)
		{
			ret |= showpage(ctx, doc, out, page);
		}

		spec = fz_strsep(&pagelist, ",");
	}

	return ret;
}
コード例 #11
0
ファイル: pdf_colorspace.c プロジェクト: AvinashKiran/mupdf
static void
indexed_to_rgb(fz_context *ctx, fz_colorspace *cs, float *color, float *rgb)
{
	struct indexed *idx = cs->data;
	float alt[FZ_MAX_COLORS];
	int i, k;
	i = color[0] * 255;
	i = fz_clampi(i, 0, idx->high);
	for (k = 0; k < idx->base->n; k++)
		alt[k] = idx->lookup[i * idx->base->n + k] / 255.0f;
	idx->base->to_rgb(ctx, idx->base, alt, rgb);
}
コード例 #12
0
ファイル: image.c プロジェクト: ArtifexSoftware/mupdf
static void
fz_unblend_masked_tile(fz_context *ctx, fz_pixmap *tile, fz_image *image)
{
	fz_pixmap *mask = fz_get_pixmap_from_image(ctx, image->mask, NULL, NULL, NULL, NULL);
	unsigned char *s = mask->samples;
	unsigned char *d = tile->samples;
	int n = tile->n;
	int k;
	int sstride = mask->stride - mask->w * mask->n;
	int dstride = tile->stride - tile->w * tile->n;
	int h = mask->h;

	if (tile->w != mask->w || tile->h != mask->h)
	{
		fz_warn(ctx, "mask must be of same size as image for /Matte");
		fz_drop_pixmap(ctx, mask);
		return;
	}

	if (mask->w != 0)
	{
		while (h--)
		{
			int w = mask->w;
			do
			{
				if (*s == 0)
					for (k = 0; k < image->n; k++)
						d[k] = image->colorkey[k];
				else
					for (k = 0; k < image->n; k++)
						d[k] = fz_clampi(image->colorkey[k] + (d[k] - image->colorkey[k]) * 255 / *s, 0, 255);
				s++;
				d += n;
			}
			while (--w);
			s += sstride;
			d += dstride;
		}
	}

	fz_drop_pixmap(ctx, mask);
}
コード例 #13
0
ファイル: load-gif.c プロジェクト: arbitrary-dev/mupdf
static void
gif_read_line(fz_context *ctx, struct info *info, unsigned char *dest, int ct_entries, const unsigned char *ct, unsigned int y, unsigned char *sp)
{
	unsigned int index = (info->image_top + y) * info->width + info->image_left;
	unsigned char *dp = &dest[index * 4];
	unsigned char *mp = &info->mask[index];
	unsigned int x, k;

	if (info->image_top + y >= info->height)
		return;

	for (x = 0; x < info->image_width && info->image_left + x < info->width; x++, sp++, mp++, dp += 4)
		if (!info->has_transparency || *sp != info->transparent)
		{
			*mp = 0x02;
			for (k = 0; k < 3; k++)
				dp[k] = ct[fz_clampi(*sp, 0, ct_entries - 1) * 3 + k];
			dp[3] = 255;
		}
		else if (*mp == 0x01)
			*mp = 0x00;
}
コード例 #14
0
ファイル: pdfviewer.c プロジェクト: klange/toaru-pdfviewer
static void drawrange(fz_context *ctx, fz_document *doc, char *range) {
	int page, spage, epage, pagecount;
	char *spec, *dash;

	pagecount = fz_count_pages(doc);
	spec = fz_strsep(&range, ",");
	while (spec)
	{
		dash = strchr(spec, '-');

		if (dash == spec)
			spage = epage = pagecount;
		else
			spage = epage = atoi(spec);

		if (dash)
		{
			if (strlen(dash) > 1)
				epage = atoi(dash + 1);
			else
				epage = pagecount;
		}

		spage = fz_clampi(spage, 1, pagecount);
		epage = fz_clampi(epage, 1, pagecount);

		current_doc = doc;
		current_ctx = ctx;
		current_epage = epage;

		for (page = spage; page <= epage; ) {
			if (page == 0) page = 1;

			current_page = page;

			drawpage(ctx, doc, page);
			draw_decors(page, epage);

			yutani_flip(yctx, window);

			yutani_msg_t * m = NULL;
			while (1) {
				m = yutani_poll(yctx);
				if (m) {
					switch (m->type) {
						case YUTANI_MSG_KEY_EVENT:
							{
								struct yutani_msg_key_event * ke = (void*)m->data;
								if (ke->event.action == KEY_ACTION_DOWN) {
									switch (ke->event.keycode) {
										case KEY_ESCAPE:
										case 'q':
											yutani_close(yctx, window);
											exit(0);
											break;
										case KEY_ARROW_LEFT:
										case 'a':
											page--;
											goto _continue;
										case KEY_ARROW_RIGHT:
										case 's':
											page++;
											if (page > epage) page = epage;
											goto _continue;
										case KEY_F12:
											toggle_decorations();
											goto _continue;
										default:
											break;
									}
								}
							}
							break;
						case YUTANI_MSG_SESSION_END:
							yutani_close(yctx, window);
							exit(0);
							break;
						case YUTANI_MSG_WINDOW_FOCUS_CHANGE:
							{
								struct yutani_msg_window_focus_change * wf = (void*)m->data;
								yutani_window_t * win = hashmap_get(yctx->windows, (void*)wf->wid);
								if (win) {
									win->focused = wf->focused;
									goto _continue;
								}
							}
							break;
						case YUTANI_MSG_RESIZE_OFFER:
							{
								struct yutani_msg_window_resize * wr = (void*)m->data;
								resize_finish(wr->width, wr->height);
								goto _continue;
							}
							break;
						case YUTANI_MSG_WINDOW_MOUSE_EVENT:
							if (decor_handle_event(yctx, m) == DECOR_CLOSE) {
								yutani_close(yctx, window);
								exit(0);
							}
							break;
						default:
							break;
					}
				}
				free(m);
			}
_continue:
			free(m);
		}

		spec = fz_strsep(&range, ",");
	}
}
コード例 #15
0
ファイル: pdf-interpret.c プロジェクト: ArtifexSoftware/mupdf
static void
pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_obj *dict)
{
	pdf_obj *obj;

	obj = pdf_dict_get(ctx, dict, PDF_NAME_LW);
	if (pdf_is_number(ctx, obj) && proc->op_w)
		proc->op_w(ctx, proc, pdf_to_real(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_LC);
	if (pdf_is_int(ctx, obj) && proc->op_J)
		proc->op_J(ctx, proc, fz_clampi(pdf_to_int(ctx, obj), 0, 2));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_LJ);
	if (pdf_is_int(ctx, obj) && proc->op_j)
		proc->op_j(ctx, proc, fz_clampi(pdf_to_int(ctx, obj), 0, 2));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_ML);
	if (pdf_is_number(ctx, obj) && proc->op_M)
		proc->op_M(ctx, proc, pdf_to_real(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_D);
	if (pdf_is_array(ctx, obj) && proc->op_d)
	{
		pdf_obj *dash_array = pdf_array_get(ctx, obj, 0);
		pdf_obj *dash_phase = pdf_array_get(ctx, obj, 1);
		proc->op_d(ctx, proc, dash_array, pdf_to_real(ctx, dash_phase));
	}

	obj = pdf_dict_get(ctx, dict, PDF_NAME_RI);
	if (pdf_is_name(ctx, obj) && proc->op_ri)
		proc->op_ri(ctx, proc, pdf_to_name(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_FL);
	if (pdf_is_number(ctx, obj) && proc->op_i)
		proc->op_i(ctx, proc, pdf_to_real(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_Font);
	if (pdf_is_array(ctx, obj) && proc->op_Tf)
	{
		pdf_obj *font_ref = pdf_array_get(ctx, obj, 0);
		pdf_obj *font_size = pdf_array_get(ctx, obj, 1);
		pdf_font_desc *font = load_font_or_hail_mary(ctx, csi->doc, csi->rdb, font_ref, 0, csi->cookie);
		fz_try(ctx)
			proc->op_Tf(ctx, proc, "ExtGState", font, pdf_to_real(ctx, font_size));
		fz_always(ctx)
			pdf_drop_font(ctx, font);
		fz_catch(ctx)
			fz_rethrow(ctx);
	}

	/* transfer functions */

	obj = pdf_dict_get(ctx, dict, PDF_NAME_TR2);
	if (pdf_is_name(ctx, obj))
		if (!pdf_name_eq(ctx, obj, PDF_NAME_Identity) && !pdf_name_eq(ctx, obj, PDF_NAME_Default))
			fz_warn(ctx, "ignoring transfer function");
	if (!obj) /* TR is ignored in the presence of TR2 */
	{
		pdf_obj *tr = pdf_dict_get(ctx, dict, PDF_NAME_TR);
		if (pdf_is_name(ctx, tr))
			if (!pdf_name_eq(ctx, tr, PDF_NAME_Identity))
				fz_warn(ctx, "ignoring transfer function");
	}

	/* transparency state */

	obj = pdf_dict_get(ctx, dict, PDF_NAME_CA);
	if (pdf_is_number(ctx, obj) && proc->op_gs_CA)
		proc->op_gs_CA(ctx, proc, pdf_to_real(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_ca);
	if (pdf_is_number(ctx, obj) && proc->op_gs_ca)
		proc->op_gs_ca(ctx, proc, pdf_to_real(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_BM);
	if (pdf_is_array(ctx, obj))
		obj = pdf_array_get(ctx, obj, 0);
	if (pdf_is_name(ctx, obj) && proc->op_gs_BM)
		proc->op_gs_BM(ctx, proc, pdf_to_name(ctx, obj));

	obj = pdf_dict_get(ctx, dict, PDF_NAME_SMask);
	if (proc->op_gs_SMask)
	{
		if (pdf_is_dict(ctx, obj))
		{
			pdf_xobject *xobj;
			pdf_obj *group, *s, *bc, *tr;
			float softmask_bc[FZ_MAX_COLORS];
			fz_colorspace *colorspace;
			int colorspace_n = 1;
			int k, luminosity;

			fz_var(xobj);

			group = pdf_dict_get(ctx, obj, PDF_NAME_G);
			if (!group)
				fz_throw(ctx, FZ_ERROR_GENERIC, "cannot load softmask xobject (%d 0 R)", pdf_to_num(ctx, obj));
			xobj = pdf_load_xobject(ctx, csi->doc, group);

			fz_try(ctx)
			{
				colorspace = pdf_xobject_colorspace(ctx, xobj);
				if (colorspace)
				{
					colorspace_n = fz_colorspace_n(ctx, colorspace);
					fz_drop_colorspace(ctx, colorspace);
				}

				/* Default background color is black. */
				for (k = 0; k < colorspace_n; k++)
					softmask_bc[k] = 0;
				/* Which in CMYK means not all zeros! This should really be
				 * a test for subtractive color spaces, but this will have
				 * to do for now. */
				if (colorspace == fz_device_cmyk(ctx))
					softmask_bc[3] = 1.0;

				bc = pdf_dict_get(ctx, obj, PDF_NAME_BC);
				if (pdf_is_array(ctx, bc))
				{
					for (k = 0; k < colorspace_n; k++)
						softmask_bc[k] = pdf_to_real(ctx, pdf_array_get(ctx, bc, k));
				}

				s = pdf_dict_get(ctx, obj, PDF_NAME_S);
				if (pdf_name_eq(ctx, s, PDF_NAME_Luminosity))
					luminosity = 1;
				else
					luminosity = 0;

				tr = pdf_dict_get(ctx, obj, PDF_NAME_TR);
				if (tr && !pdf_name_eq(ctx, tr, PDF_NAME_Identity))
					fz_warn(ctx, "ignoring transfer function");

				proc->op_gs_SMask(ctx, proc, xobj, csi->rdb, softmask_bc, luminosity);
			}
			fz_always(ctx)
			{
				pdf_drop_xobject(ctx, xobj);
			}
			fz_catch(ctx)
			{
				fz_rethrow(ctx);
			}
		}
		else if (pdf_is_name(ctx, obj) && pdf_name_eq(ctx, obj, PDF_NAME_None))
		{
			proc->op_gs_SMask(ctx, proc, NULL, NULL, NULL, 0);
		}
	}
コード例 #16
0
static void retainpages(fz_context *ctx, globals *glo, int argc, char **argv)
{
	pdf_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;
	pdf_document *doc = glo->doc;
	int argidx = 0;
	pdf_obj *names_list = NULL;
	int pagecount;
	int i;

	/* Keep only pages/type and (reduced) dest entries to avoid
	 * references to unretained pages */
	oldroot = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
	pages = pdf_dict_get(ctx, oldroot, PDF_NAME_Pages);
	olddests = pdf_load_name_tree(ctx, doc, PDF_NAME_Dests);

	root = pdf_new_dict(ctx, doc, 2);
	pdf_dict_put(ctx, root, PDF_NAME_Type, pdf_dict_get(ctx, oldroot, PDF_NAME_Type));
	pdf_dict_put(ctx, root, PDF_NAME_Pages, pdf_dict_get(ctx, oldroot, PDF_NAME_Pages));

	pdf_update_object(ctx, doc, pdf_to_num(ctx, oldroot), root);

	pdf_drop_obj(ctx, root);

	/* Create a new kids array with only the pages we want to keep */
	parent = pdf_new_indirect(ctx, doc, pdf_to_num(ctx, pages), pdf_to_gen(ctx, pages));
	kids = pdf_new_array(ctx, doc, 1);

	/* Retain pages specified */
	while (argc - argidx)
	{
		int page, spage, epage;
		char *spec, *dash;
		char *pagelist = argv[argidx];

		pagecount = pdf_count_pages(ctx, doc);
		spec = fz_strsep(&pagelist, ",");
		while (spec)
		{
			dash = strchr(spec, '-');

			if (dash == spec)
				spage = epage = pagecount;
			else
				spage = epage = atoi(spec);

			if (dash)
			{
				if (strlen(dash) > 1)
					epage = atoi(dash + 1);
				else
					epage = pagecount;
			}

			spage = fz_clampi(spage, 1, pagecount);
			epage = fz_clampi(epage, 1, pagecount);

			if (spage < epage)
				for (page = spage; page <= epage; ++page)
					retainpage(ctx, doc, parent, kids, page);
			else
				for (page = spage; page >= epage; --page)
					retainpage(ctx, doc, parent, kids, page);

			spec = fz_strsep(&pagelist, ",");
		}

		argidx++;
	}

	pdf_drop_obj(ctx, parent);

	/* Update page count and kids array */
	countobj = pdf_new_int(ctx, doc, pdf_array_len(ctx, kids));
	pdf_dict_put(ctx, pages, PDF_NAME_Count, countobj);
	pdf_drop_obj(ctx, countobj);
	pdf_dict_put(ctx, pages, PDF_NAME_Kids, kids);
	pdf_drop_obj(ctx, kids);

	/* Also preserve the (partial) Dests name tree */
	if (olddests)
	{
		pdf_obj *names = pdf_new_dict(ctx, doc, 1);
		pdf_obj *dests = pdf_new_dict(ctx, doc, 1);
		int len = pdf_dict_len(ctx, olddests);

		names_list = pdf_new_array(ctx, doc, 32);

		for (i = 0; i < len; i++)
		{
			pdf_obj *key = pdf_dict_get_key(ctx, olddests, i);
			pdf_obj *val = pdf_dict_get_val(ctx, olddests, i);
			pdf_obj *dest = pdf_dict_get(ctx, val, PDF_NAME_D);

			dest = pdf_array_get(ctx, dest ? dest : val, 0);
			if (pdf_array_contains(ctx, pdf_dict_get(ctx, pages, PDF_NAME_Kids), dest))
			{
				pdf_obj *key_str = pdf_new_string(ctx, doc, pdf_to_name(ctx, key), strlen(pdf_to_name(ctx, key)));
				pdf_array_push(ctx, names_list, key_str);
				pdf_array_push(ctx, names_list, val);
				pdf_drop_obj(ctx, key_str);
			}
		}

		root = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
		pdf_dict_put(ctx, dests, PDF_NAME_Names, names_list);
		pdf_dict_put(ctx, names, PDF_NAME_Dests, dests);
		pdf_dict_put(ctx, root, PDF_NAME_Names, names);

		pdf_drop_obj(ctx, names);
		pdf_drop_obj(ctx, dests);
		pdf_drop_obj(ctx, names_list);
		pdf_drop_obj(ctx, olddests);
	}

	/* Force the next call to pdf_count_pages to recount */
	glo->doc->page_count = 0;

	/* Edit each pages /Annot list to remove any links that point to
	 * nowhere. */
	pagecount = pdf_count_pages(ctx, doc);
	for (i = 0; i < pagecount; i++)
	{
		pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
		pdf_obj *pageobj = pdf_resolve_indirect(ctx, pageref);

		pdf_obj *annots = pdf_dict_get(ctx, pageobj, PDF_NAME_Annots);

		int len = pdf_array_len(ctx, annots);
		int j;

		for (j = 0; j < len; j++)
		{
			pdf_obj *o = pdf_array_get(ctx, annots, j);
			pdf_obj *p;

			if (!pdf_name_eq(ctx, pdf_dict_get(ctx, o, PDF_NAME_Subtype), PDF_NAME_Link))
				continue;

			p = pdf_dict_get(ctx, o, PDF_NAME_A);
			if (!pdf_name_eq(ctx, pdf_dict_get(ctx, p, PDF_NAME_S), PDF_NAME_GoTo))
				continue;

			if (string_in_names_list(ctx, pdf_dict_get(ctx, p, PDF_NAME_D), names_list))
				continue;

			/* FIXME: Should probably look at Next too */

			/* Remove this annotation */
			pdf_array_delete(ctx, annots, j);
			j--;
		}
	}
}
コード例 #17
0
ファイル: pdf_colorspace.c プロジェクト: AvinashKiran/mupdf
static fz_colorspace *
load_indexed(pdf_document *xref, pdf_obj *array)
{
	struct indexed *idx = NULL;
	fz_context *ctx = xref->ctx;
	pdf_obj *baseobj = pdf_array_get(array, 1);
	pdf_obj *highobj = pdf_array_get(array, 2);
	pdf_obj *lookup = pdf_array_get(array, 3);
	fz_colorspace *base = NULL;
	fz_colorspace *cs = NULL;
	int i, n;

	fz_var(idx);
	fz_var(base);
	fz_var(cs);

	fz_try(ctx)
	{
		base = pdf_load_colorspace(xref, baseobj);

		idx = fz_malloc_struct(ctx, struct indexed);
		idx->lookup = NULL;
		idx->base = base;
		idx->high = pdf_to_int(highobj);
		idx->high = fz_clampi(idx->high, 0, 255);
		n = base->n * (idx->high + 1);
		idx->lookup = fz_malloc_array(ctx, 1, n);

		cs = fz_new_colorspace(ctx, "Indexed", 1);
		cs->to_rgb = indexed_to_rgb;
		cs->free_data = free_indexed;
		cs->data = idx;
		cs->size += sizeof(*idx) + n + (base ? base->size : 0);

		if (pdf_is_string(lookup) && pdf_to_str_len(lookup) == n)
		{
			unsigned char *buf = (unsigned char *) pdf_to_str_buf(lookup);
			for (i = 0; i < n; i++)
				idx->lookup[i] = buf[i];
		}
		else if (pdf_is_indirect(lookup))
		{
			fz_stream *file = NULL;

			fz_var(file);

			fz_try(ctx)
			{
				file = pdf_open_stream(xref, pdf_to_num(lookup), pdf_to_gen(lookup));
				i = fz_read(file, idx->lookup, n);
			}
			fz_always(ctx)
			{
				fz_close(file);
			}
			fz_catch(ctx)
			{
				fz_throw(ctx, "cannot open colorspace lookup table (%d 0 R)", pdf_to_num(lookup));
			}
		}
		else
		{
			fz_throw(ctx, "cannot parse colorspace lookup table");
		}
	}
コード例 #18
0
ファイル: load-pnm.c プロジェクト: iezbli/zbli
static fz_pixmap *
pnm_ascii_read_image(fz_context *ctx, struct info *pnm, unsigned char *p, unsigned char *e, int onlymeta, int bitmap)
{
	fz_pixmap *img = NULL;

	p = pnm_read_number(ctx, p, e, &pnm->width);
	p = pnm_read_white(ctx, p, e, 0);

	if (bitmap)
	{
		p = pnm_read_number(ctx, p, e, &pnm->height);
		p = pnm_read_white(ctx, p, e, 1);
		pnm->maxval = 1;
	}
	else
	{
		p = pnm_read_number(ctx, p, e, &pnm->height);
		p = pnm_read_white(ctx, p, e, 0);
		p = pnm_read_number(ctx, p, e, &pnm->maxval);
		p = pnm_read_white(ctx, p, e, 0);
		if (pnm->maxval < 0 || pnm->maxval >= 65536)
			fz_throw(ctx, FZ_ERROR_GENERIC, "maximum sample value of out range in pnm image: %d", pnm->maxval);
	}

	if (!onlymeta)
	{
		unsigned char *dp;
		int x, y, k;

		img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, 0);
		dp = img->samples;

		if (bitmap)
		{
			for (y = 0; y < pnm->height; y++)
			{
				for (x = 0; x < pnm->width; x++)
				{
					int v = 0;
					p = pnm_read_number(ctx, p, e, &v);
					p = pnm_read_white(ctx, p, e, 0);
					if (v == 0)
						*dp = 0x00;
					else
						*dp = 0xff;

					dp++;
				}
			}
		}
		else
		{
			for (y = 0; y < pnm->height; y++)
				for (x = 0; x < pnm->width; x++)
					for (k = 0; k < img->colorspace->n; k++)
					{
						int v = 0;
						p = pnm_read_number(ctx, p, e, &v);
						p = pnm_read_white(ctx, p, e, 0);
						v = fz_clampi(v, 0, pnm->maxval);
						*dp++ = map_color(ctx, v, pnm->maxval, 255);
					}
		}

	}

	return img;
}
コード例 #19
0
ファイル: gl-main.c プロジェクト: ArtifexSoftware/mupdf
static void do_app(void)
{
    if (ui.key == KEY_F4 && ui.mod == GLFW_MOD_ALT)
        quit();

    if (ui.down || ui.middle || ui.right || ui.key)
        showinfo = 0;

    if (!ui.focus && ui.key)
    {
        switch (ui.key)
        {
        case 'q':
            quit();
            break;
        case 'm':
            if (number == 0)
                push_history();
            else if (number > 0 && number < nelem(marks))
                marks[number] = currentpage;
            break;
        case 't':
            if (number == 0)
            {
                if (history_count > 0)
                    pop_history();
            }
            else if (number > 0 && number < nelem(marks))
            {
                jump_to_page(marks[number]);
            }
            break;
        case 'T':
            if (number == 0)
            {
                if (future_count > 0)
                    pop_future();
            }
            break;
        case 'N':
            search_dir = -1;
            if (search_hit_page == currentpage)
                search_page = currentpage + search_dir;
            else
                search_page = currentpage;
            if (search_page >= 0 && search_page < fz_count_pages(ctx, doc))
            {
                search_hit_page = -1;
                if (search_needle)
                    search_active = 1;
            }
            break;
        case 'n':
            search_dir = 1;
            if (search_hit_page == currentpage)
                search_page = currentpage + search_dir;
            else
                search_page = currentpage;
            if (search_page >= 0 && search_page < fz_count_pages(ctx, doc))
            {
                search_hit_page = -1;
                if (search_needle)
                    search_active = 1;
            }
            break;
        case 'f':
            toggle_fullscreen();
            break;
        case 'w':
            shrinkwrap();
            break;
        case 'r':
            reload();
            break;
        case 'o':
            toggle_outline();
            break;
        case 'W':
            auto_zoom_w();
            break;
        case 'H':
            auto_zoom_h();
            break;
        case 'Z':
            auto_zoom();
            break;
        case 'z':
            currentzoom = number > 0 ? number : DEFRES;
            break;
        case '<':
            currentpage -= 10 * fz_maxi(number, 1);
            break;
        case '>':
            currentpage += 10 * fz_maxi(number, 1);
            break;
        case ',':
        case KEY_PAGE_UP:
            currentpage -= fz_maxi(number, 1);
            break;
        case '.':
        case KEY_PAGE_DOWN:
            currentpage += fz_maxi(number, 1);
            break;
        case 'b':
            number = fz_maxi(number, 1);
            while (number--) smart_move_backward();
            break;
        case ' ':
            number = fz_maxi(number, 1);
            while (number--) smart_move_forward();
            break;
        case 'g':
            jump_to_page(number - 1);
            break;
        case 'G':
            jump_to_page(fz_count_pages(ctx, doc) - 1);
            break;
        case '+':
            currentzoom = zoom_in(currentzoom);
            break;
        case '-':
            currentzoom = zoom_out(currentzoom);
            break;
        case '[':
            currentrotate += 90;
            break;
        case ']':
            currentrotate -= 90;
            break;
        case 'l':
            showlinks = !showlinks;
            break;
        case 'i':
            showinfo = !showinfo;
            break;
        case '/':
            search_dir = 1;
            showsearch = 1;
            search_input.p = search_input.text;
            search_input.q = search_input.end;
            break;
        case '?':
            search_dir = -1;
            showsearch = 1;
            search_input.p = search_input.text;
            search_input.q = search_input.end;
            break;
        case KEY_UP:
            scroll_y -= 10;
            break;
        case KEY_DOWN:
            scroll_y += 10;
            break;
        case KEY_LEFT:
            scroll_x -= 10;
            break;
        case KEY_RIGHT:
            scroll_x += 10;
            break;
        }

        if (ui.key >= '0' && ui.key <= '9')
            number = number * 10 + ui.key - '0';
        else
            number = 0;

        currentpage = fz_clampi(currentpage, 0, fz_count_pages(ctx, doc) - 1);
        currentzoom = fz_clamp(currentzoom, MINRES, MAXRES);
        while (currentrotate < 0) currentrotate += 360;
        while (currentrotate >= 360) currentrotate -= 360;

        if (search_hit_page != currentpage)
            search_hit_page = -1; /* clear highlights when navigating */

        ui_needs_update = 1;

        ui.key = 0; /* we ate the key event, so zap it */
    }
}
コード例 #20
0
ファイル: load-pnm.c プロジェクト: JorjMcKie/mupdf
static fz_pixmap *
pnm_ascii_read_image(fz_context *ctx, struct info *pnm, const unsigned char *p, const unsigned char *e, int onlymeta, int bitmap, const unsigned char **out)
{
	fz_pixmap *img = NULL;

	p = pnm_read_number(ctx, p, e, &pnm->width);
	p = pnm_read_white(ctx, p, e, 0);

	if (bitmap)
	{
		p = pnm_read_number(ctx, p, e, &pnm->height);
		p = pnm_read_white(ctx, p, e, 1);
		pnm->maxval = 1;
	}
	else
	{
		p = pnm_read_number(ctx, p, e, &pnm->height);
		p = pnm_read_white(ctx, p, e, 0);
		p = pnm_read_number(ctx, p, e, &pnm->maxval);
		p = pnm_read_white(ctx, p, e, 0);
	}

	if (pnm->maxval <= 0 || pnm->maxval >= 65536)
		fz_throw(ctx, FZ_ERROR_GENERIC, "maximum sample value of out range in pnm image: %d", pnm->maxval);

	pnm->bitdepth = bitdepth_from_maxval(pnm->maxval);

	if (pnm->height <= 0)
		fz_throw(ctx, FZ_ERROR_GENERIC, "image height must be > 0");
	if (pnm->width <= 0)
		fz_throw(ctx, FZ_ERROR_GENERIC, "image width must be > 0");
	if ((unsigned int)pnm->height > UINT_MAX / pnm->width / fz_colorspace_n(ctx, pnm->cs) / (pnm->bitdepth / 8 + 1))
		fz_throw(ctx, FZ_ERROR_GENERIC, "image too large");

	if (onlymeta)
	{
		int x, y, k;
		int w, h, n;

		w = pnm->width;
		h = pnm->height;
		n = fz_colorspace_n(ctx, pnm->cs);

		if (bitmap)
		{
			for (y = 0; y < h; y++)
				for (x = -1; x < w; x++)
				{
					p = pnm_read_number(ctx, p, e, NULL);
					p = pnm_read_white(ctx, p, e, 0);
				}
		}
		else
		{
			for (y = 0; y < h; y++)
				for (x = 0; x < w; x++)
					for (k = 0; k < n; k++)
					{
						p = pnm_read_number(ctx, p, e, NULL);
						p = pnm_read_white(ctx, p, e, 0);
					}
		}
	}
	else
	{
		unsigned char *dp;
		int x, y, k;
		int w, h, n;

		img = fz_new_pixmap(ctx, pnm->cs, pnm->width, pnm->height, NULL, 0);
		dp = img->samples;

		w = img->w;
		h = img->h;
		n = img->n;

		if (bitmap)
		{
			for (y = 0; y < h; y++)
			{
				for (x = 0; x < w; x++)
				{
					int v = 0;
					p = pnm_read_number(ctx, p, e, &v);
					p = pnm_read_white(ctx, p, e, 0);
					*dp++ = v ? 0x00 : 0xff;
				}
			}
		}
		else
		{
			for (y = 0; y < h; y++)
				for (x = 0; x < w; x++)
					for (k = 0; k < n; k++)
					{
						int v = 0;
						p = pnm_read_number(ctx, p, e, &v);
						p = pnm_read_white(ctx, p, e, 0);
						v = fz_clampi(v, 0, pnm->maxval);
						*dp++ = map_color(ctx, v, pnm->maxval, 255);
					}
		}
	}

	if (out)
		*out = p;

	return img;
}
コード例 #21
0
static void retainpages(int argc, char **argv)
{
	pdf_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;

	/* Keep only pages/type and (reduced) dest entries to avoid
	 * references to unretained pages */
	oldroot = pdf_dict_gets(xref->trailer, "Root");
	pages = pdf_dict_gets(oldroot, "Pages");
	olddests = pdf_load_name_tree(xref, "Dests");

	root = pdf_new_dict(ctx, 2);
	pdf_dict_puts(root, "Type", pdf_dict_gets(oldroot, "Type"));
	pdf_dict_puts(root, "Pages", pdf_dict_gets(oldroot, "Pages"));

	pdf_update_object(xref, pdf_to_num(oldroot), root);

	pdf_drop_obj(root);

	/* Create a new kids array with only the pages we want to keep */
	parent = pdf_new_indirect(ctx, pdf_to_num(pages), pdf_to_gen(pages), xref);
	kids = pdf_new_array(ctx, 1);

	/* Retain pages specified */
	while (argc - fz_optind)
	{
		int page, spage, epage, pagecount;
		char *spec, *dash;
		char *pagelist = argv[fz_optind];

		pagecount = pdf_count_pages(xref);
		spec = fz_strsep(&pagelist, ",");
		while (spec)
		{
			dash = strchr(spec, '-');

			if (dash == spec)
				spage = epage = pagecount;
			else
				spage = epage = atoi(spec);

			if (dash)
			{
				if (strlen(dash) > 1)
					epage = atoi(dash + 1);
				else
					epage = pagecount;
			}

			if (spage > epage)
				page = spage, spage = epage, epage = page;

			spage = fz_clampi(spage, 1, pagecount);
			epage = fz_clampi(epage, 1, pagecount);

			for (page = spage; page <= epage; page++)
			{
				pdf_obj *pageobj = xref->page_objs[page-1];
				pdf_obj *pageref = xref->page_refs[page-1];

				pdf_dict_puts(pageobj, "Parent", parent);

				/* Store page object in new kids array */
				pdf_array_push(kids, pageref);
			}

			spec = fz_strsep(&pagelist, ",");
		}

		fz_optind++;
	}

	pdf_drop_obj(parent);

	/* Update page count and kids array */
	countobj = pdf_new_int(ctx, pdf_array_len(kids));
	pdf_dict_puts(pages, "Count", countobj);
	pdf_drop_obj(countobj);
	pdf_dict_puts(pages, "Kids", kids);
	pdf_drop_obj(kids);

	/* Also preserve the (partial) Dests name tree */
	if (olddests)
	{
		int i;
		pdf_obj *names = pdf_new_dict(ctx, 1);
		pdf_obj *dests = pdf_new_dict(ctx, 1);
		pdf_obj *names_list = pdf_new_array(ctx, 32);
		int len = pdf_dict_len(olddests);

		for (i = 0; i < len; i++)
		{
			pdf_obj *key = pdf_dict_get_key(olddests, i);
			pdf_obj *val = pdf_dict_get_val(olddests, i);
			pdf_obj *key_str = pdf_new_string(ctx, pdf_to_name(key), strlen(pdf_to_name(key)));
			pdf_obj *dest = pdf_dict_gets(val, "D");

			dest = pdf_array_get(dest ? dest : val, 0);
			if (pdf_array_contains(pdf_dict_gets(pages, "Kids"), dest))
			{
				pdf_array_push(names_list, key_str);
				pdf_array_push(names_list, val);
			}
			pdf_drop_obj(key_str);
		}

		root = pdf_dict_gets(xref->trailer, "Root");
		pdf_dict_puts(dests, "Names", names_list);
		pdf_dict_puts(names, "Dests", dests);
		pdf_dict_puts(root, "Names", names);

		pdf_drop_obj(names);
		pdf_drop_obj(dests);
		pdf_drop_obj(names_list);
		pdf_drop_obj(olddests);
	}
}
コード例 #22
0
static void retainpages(fz_context *ctx, globals *glo, int argc, char **argv)
{
	pdf_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;
	pdf_document *doc = glo->doc;
	int argidx = 0;
	pdf_obj *names_list = NULL;
	pdf_obj *outlines;
	int pagecount;
	int i;
	int *page_object_nums;

	/* Keep only pages/type and (reduced) dest entries to avoid
	 * references to unretained pages */
	oldroot = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
	pages = pdf_dict_get(ctx, oldroot, PDF_NAME_Pages);
	olddests = pdf_load_name_tree(ctx, doc, PDF_NAME_Dests);
	outlines = pdf_dict_get(ctx, oldroot, PDF_NAME_Outlines);

	root = pdf_new_dict(ctx, doc, 3);
	pdf_dict_put(ctx, root, PDF_NAME_Type, pdf_dict_get(ctx, oldroot, PDF_NAME_Type));
	pdf_dict_put(ctx, root, PDF_NAME_Pages, pdf_dict_get(ctx, oldroot, PDF_NAME_Pages));
	pdf_dict_put(ctx, root, PDF_NAME_Outlines, outlines);

	pdf_update_object(ctx, doc, pdf_to_num(ctx, oldroot), root);

	/* Create a new kids array with only the pages we want to keep */
	parent = pdf_new_indirect(ctx, doc, pdf_to_num(ctx, pages), pdf_to_gen(ctx, pages));
	kids = pdf_new_array(ctx, doc, 1);

	/* Retain pages specified */
	while (argc - argidx)
	{
		int page, spage, epage;
		char *spec, *dash;
		char *pagelist = argv[argidx];

		pagecount = pdf_count_pages(ctx, doc);
		spec = fz_strsep(&pagelist, ",");
		while (spec)
		{
			dash = strchr(spec, '-');

			if (dash == spec)
				spage = epage = pagecount;
			else
				spage = epage = atoi(spec);

			if (dash)
			{
				if (strlen(dash) > 1)
					epage = atoi(dash + 1);
				else
					epage = pagecount;
			}

			spage = fz_clampi(spage, 1, pagecount);
			epage = fz_clampi(epage, 1, pagecount);

			if (spage < epage)
				for (page = spage; page <= epage; ++page)
					retainpage(ctx, doc, parent, kids, page);
			else
				for (page = spage; page >= epage; --page)
					retainpage(ctx, doc, parent, kids, page);

			spec = fz_strsep(&pagelist, ",");
		}

		argidx++;
	}

	pdf_drop_obj(ctx, parent);

	/* Update page count and kids array */
	countobj = pdf_new_int(ctx, doc, pdf_array_len(ctx, kids));
	pdf_dict_put(ctx, pages, PDF_NAME_Count, countobj);
	pdf_drop_obj(ctx, countobj);
	pdf_dict_put(ctx, pages, PDF_NAME_Kids, kids);
	pdf_drop_obj(ctx, kids);

	/* Force the next call to pdf_count_pages to recount */
	glo->doc->page_count = 0;

	pagecount = pdf_count_pages(ctx, doc);
	page_object_nums = fz_calloc(ctx, pagecount, sizeof(*page_object_nums));
	for (i = 0; i < pagecount; i++)
	{
		pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
		page_object_nums[i] = pdf_to_num(ctx, pageref);
	}

	/* If we had an old Dests tree (now reformed as an olddests
	 * dictionary), keep any entries in there that point to
	 * valid pages. This may mean we keep more than we need, but
	 * it's safe at least. */
	if (olddests)
	{
		pdf_obj *names = pdf_new_dict(ctx, doc, 1);
		pdf_obj *dests = pdf_new_dict(ctx, doc, 1);
		int len = pdf_dict_len(ctx, olddests);

		names_list = pdf_new_array(ctx, doc, 32);

		for (i = 0; i < len; i++)
		{
			pdf_obj *key = pdf_dict_get_key(ctx, olddests, i);
			pdf_obj *val = pdf_dict_get_val(ctx, olddests, i);
			pdf_obj *dest = pdf_dict_get(ctx, val, PDF_NAME_D);

			dest = pdf_array_get(ctx, dest ? dest : val, 0);
			if (dest_is_valid_page(ctx, dest, page_object_nums, pagecount))
			{
				pdf_obj *key_str = pdf_new_string(ctx, doc, pdf_to_name(ctx, key), strlen(pdf_to_name(ctx, key)));
				pdf_array_push(ctx, names_list, key_str);
				pdf_array_push(ctx, names_list, val);
				pdf_drop_obj(ctx, key_str);
			}
		}

		pdf_dict_put(ctx, dests, PDF_NAME_Names, names_list);
		pdf_dict_put(ctx, names, PDF_NAME_Dests, dests);
		pdf_dict_put(ctx, root, PDF_NAME_Names, names);

		pdf_drop_obj(ctx, names);
		pdf_drop_obj(ctx, dests);
		pdf_drop_obj(ctx, olddests);
	}

	/* Edit each pages /Annot list to remove any links that point to
	 * nowhere. */
	for (i = 0; i < pagecount; i++)
	{
		pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
		pdf_obj *pageobj = pdf_resolve_indirect(ctx, pageref);

		pdf_obj *annots = pdf_dict_get(ctx, pageobj, PDF_NAME_Annots);

		int len = pdf_array_len(ctx, annots);
		int j;

		for (j = 0; j < len; j++)
		{
			pdf_obj *o = pdf_array_get(ctx, annots, j);

			if (!pdf_name_eq(ctx, pdf_dict_get(ctx, o, PDF_NAME_Subtype), PDF_NAME_Link))
				continue;

			if (!dest_is_valid(ctx, o, pagecount, page_object_nums, names_list))
			{
				/* Remove this annotation */
				pdf_array_delete(ctx, annots, j);
				j--;
			}
		}
	}

	if (strip_outlines(ctx, doc, outlines, pagecount, page_object_nums, names_list) == 0)
	{
		pdf_dict_del(ctx, root, PDF_NAME_Outlines);
	}

	fz_free(ctx, page_object_nums);
	pdf_drop_obj(ctx, names_list);
	pdf_drop_obj(ctx, root);
}