Constructor

VipsImagethumbnail_buffer

Declaration [src] 

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

Description [src]

Optional arguments:

  • height: %gint, target height in pixels
  • size: VipsSize, upsize, downsize, both or force
  • no_rotate: %gboolean, don’t rotate upright using orientation tag
  • crop: VipsInteresting, shrink and crop to fill target
  • linear: %gboolean, perform shrink in linear light
  • import_profile: %gchararray, fallback import ICC profile
  • export_profile: %gchararray, export ICC profile
  • intent: VipsIntent, rendering intent
  • fail_on: VipsFailOn, load error types to fail on
  • option_string: %gchararray, extra loader options

Exactly as vips_thumbnail(), but read from a memory buffer. One extra optional argument, option_string, lets you pass options to the underlying loader.

See also: vips_thumbnail().

This constructor is not directly available to language bindings.

Parameters

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

Output image.

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.
width

Type: int

Target width in pixels.

...

Type: 

NULL-terminated list of optional named arguments.

Return value

Type: int

0 on success, -1 on error.