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Showing content from http://libvips.github.io/libvips/API/current/ctor.Image.pdfload_buffer.html below:

Vips.Image.pdfload_buffer

int
vips_pdfload_buffer (
  void* buf,
  size_t len,
  VipsImage** out,
  ...
)

Read a PDF-formatted memory buffer into a VIPS image. Exactly as vips_pdfload(), but read from memory.

You must not free the buffer while out is active. The VipsObject::postclose signal on out is a good place to free.

Optional arguments

• page: gint, load this page, numbered from zero
• n: gint, load this many pages
• dpi: gdouble, render at this DPI
• scale: gdouble, scale render by this factor
• background: VipsArrayDouble, background colour

This constructor is not directly available to language bindings.

buf

Type: An array of guint8

Memory area to load.

The length of the array is specified in the len argument. The data is owned by the caller of the function.

len

Type: size_t

Size of memory area.

out

Type: VipsImage

Image to write.

The argument will be set by the function. The caller of the function takes ownership of the returned data, and is responsible for freeing it.

...

Type: 

NULL-terminated list of optional named arguments.

Type: int

0 on success, -1 on error.

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