Function
Vipspdfload
Declaration [src]
int
vips_pdfload (
const char* filename,
VipsImage** out,
...
)
Description [src]
Optional arguments:
page
: %gint, load this page, numbered from zeron
: %gint, load this many pagesdpi
: %gdouble, render at this DPIscale
: %gdouble, scale render by this factorbackground
:VipsArrayDouble
background colourpassword
: %gchararray background colour
Render a PDF file into a VIPS image.
The output image is always RGBA —- CMYK PDFs will be
converted. If you need CMYK bitmaps, you should use vips_magickload()
instead.
Use page
to select a page to render, numbering from zero.
Use n
to select the number of pages to render. The default is 1. Pages are
rendered in a vertical column, with each individual page aligned to the
left. Set to -1 to mean “until the end of the document”. Use vips_grid()
to change page layout.
Use dpi
to set the rendering resolution. The default is 72. Additionally,
you can scale by setting scale
. If you set both, they combine.
Use background
to set the background RGBA colour. The default is 255
(solid white), use eg. 0 for a transparent background.
Use password
to supply a decryption password.
The operation fills a number of header fields with metadata, for example “pdf-author”. They may be useful.
This function only reads the image header and does not render any pixel data. Rendering occurs when pixels are accessed.
See also: vips_image_new_from_file(), vips_magickload().
This function is not directly available to language bindings |
Parameters
filename |
const char* |
File to load. |
|
The data is owned by the caller of the function. | |
The value is a NUL terminated UTF-8 string. | |
out |
VipsImage |
Output image. |
|
The argument will be set by the function. | |
The called function takes ownership of the data, and is responsible for freeing it. | |
... |
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