View Source Image.Options.Open (image v0.55.2)
Options and option validation for Image.open/2.
Summary
Types
Stop attempting to load an image file
when a level of error is detected.
The default is :none.
The file access mode when opening
image files. The default in :sequential.
The options applicable to opening an image.
The number of pages to open. Either
a positive integer or one of -1 or :all
meaning all pages.
Types
@type fail_on() :: :none | :truncated | :error | :warning
Stop attempting to load an image file
when a level of error is detected.
The default is :none.
Each error state implies all the states
before it such that :error implies
also :truncated.
@type file_access() :: :sequential | :random
The file access mode when opening
image files. The default in :sequential.
@type gif_open_options() :: [ access: file_access(), fail_on: fail_on(), pages: pages(), page: 0..100_000 ]
@type image_open_options() :: jpeg_open_options() | png_open_options() | tiff_open_options() | webp_open_options() | gif_open_options() | other_open_options()
The options applicable to opening an image.
@type jpeg_open_options() :: [ shrink: 1..16, access: file_access(), fail_on: fail_on() ]
@type other_open_options() :: [access: file_access(), fail_on: fail_on()]
@type pages() :: pos_integer() | -1 | :all
The number of pages to open. Either
a positive integer or one of -1 or :all
meaning all pages.
@type png_open_options() :: [access: file_access(), fail_on: fail_on()]
@type tiff_open_options() :: [ access: file_access(), fail_on: fail_on(), pages: pages(), page: 1..100_000 ]
@type webp_open_options() :: [ access: file_access(), fail_on: fail_on(), pages: pages(), page: 0..100_000, scale: non_neg_integer() | float() ]