/usr/lib/ocaml/camlpdf/pdfimage.mli is in libcamlpdf-ocaml-dev 2.1.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | (** Extract Images. *)
(* FIXME: Also CMYK etc... *)
type pixel_layout =
| BPP1 (* Black and white *)
| BPP8 (* Greyscale *)
| BPP24 (* Colour *)
| BPP48 (* 48 bit colour *)
type t =
| JPEG of Pdfio.bytes * float list option
| JPEG2000 of Pdfio.bytes * float list option
| JBIG2 of Pdfio.bytes * float list option
| Raw of int * int * pixel_layout * Pdfio.bytes
(** Given a pdf document, resources dictionary and a stream representing an
image, return a triple : width, height, and a stream of (width * height * 3)
bytes RGBRGB etc. In all instances, if JPEG or JPEG2000 or JBIG2 is the compression
method, data is returned still encoded. *)
val get_image_24bpp :
Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
(** Similarly, but if it's to be Raw, use the smallest pixel layout required to
represent the data. Not implemented yet. *)
val get_image :
Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
(** Get the uncompressed image contents in 24bpp, decoding JPEG, JPEG2000 and JBIG2 as
required. Not implemented yet. *)
val get_image_raw_24bpp :
Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
(** Get the uncompressed image contents, decoding JPEG, JPEG2000 and JBIG2 as
required. Not implemented yet. *)
val get_image_raw :
Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
(** Return a function which, when given an x and y coordinate, returns the pixel
byte values prior to any decoding, i.e in the raw input image data before /Decode,
/Index lookups and so on. Returns array of components as bytes. *)
val get_image_unprocessed_pixel : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject
-> (int -> int array) option
|