Vips.Image.new_from_memory (original) (raw)

Constructor

VipsImagenew_from_memory

Declaration [src]

VipsImage*
vips_image_new_from_memory (
  void* data,
  size_t size,
  int width,
  int height,
  int bands,
  VipsBandFormat format
)

Description [src]

This function wraps a VipsImage around a memory area. The memory area must be a simple array, for example RGBRGBRGB, left-to-right, top-to-bottom. Use vips_image_new_from_buffer() to load an area of memory containing an image in a format.

VIPS does not take responsibility for the area of memory, it’s up to you to make sure it’s freed when the image is closed. See for example VipsObject::close.

Because VIPS is “borrowing” data from the caller, this function is extremely dangerous. Unless you are very careful, you will get crashes or memory corruption. Use vips_image_new_from_memory_copy() instead if you are at all unsure.

Use vips_copy() to set other image properties.

Parameters

data

Type: An array of guint8

Start of memory area.

size

Type: size_t

Length of memory area.

width

Type: int

Image width.

height

Type: int

Image height.

bands

Type: int

Image bands (or bytes per pixel).

format

Type: VipsBandFormat

Image format.

Return value

The caller of the function takes ownership of the data, and is responsible for freeing it.