The Jpeg module

val load : string -> Image.load_option list -> Image.t;;

Loads a jpeg image.

val load_thumbnail : string -> Image.load_option list -> Geometry.spec -> 
  int * int * Image.t;;

val save : string -> Image.save_option list -> Image.t -> unit;;

Save a full-color image in jpeg format file. Raises Invalid_argument if the image is not a full-color image.

val save_as_cmyk : string -> Image.save_option list -> 
  (Image.rgb -> int * int * int * int) -> Image.t -> unit;;

This converts RGB images to CMYK, but the color conversion is not something fancy.

val save_cmyk_sample : string -> Image.save_option list -> unit;;

Create CMYK jpeg image sample. Just for developpers.

Scanline based I/O functions

type in_handle

val open_in : string -> int * int * in_handle

val open_in_thumbnail : string -> Geometry.spec -> int * int * (int * int * in_handle)

val read_scanline : in_handle -> string -> unit

val close_in : in_handle -> unit
  

type out_handle

val open_out : string -> int -> int -> int -> out_handle

val write_scanline : out_handle -> string -> unit

val close_out : out_handle -> unit

val check_header : string -> Image.header;;

Checks the file header

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