Vips.Image.webpload (original) (raw)
Constructor
VipsImagewebpload
Declaration [src]
int
vips_webpload (
const char* filename,
VipsImage** out,
...
)
Description [src]
Read a WebP file into a VIPS image.
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 scale to specify a scale-on-load factor. For example, 2.0 to double the size on load. Animated webp images don’t support shrink-on-load, so a further resize may be necessary.
The loader supports ICC, EXIF and XMP metadata.
Optional arguments
page:gint, page (frame) to readn:gint, load this many pagesscale:gdouble, scale by this much on load
This constructor is not directly available to language bindings.
Parameters
filename
Type: 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
Type: VipsImage
Decompressed 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. |
...
Type: ``
NULL-terminated list of optional named arguments.
Return value
Type: int
0 on success, -1 on error.