package camlpdf

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package camlpdf

camlpdf
- Pdf
- Pdfafm
- Pdfafmdata
- Pdfannot
- Pdfcodec
- Pdfcrypt
- Pdfcryptprimitives
- Pdfdate
- Pdfdest
- Pdfe
- Pdfflate
- Pdffun
- Pdfgenlex
- Pdfglyphlist
- Pdfimage
- Pdfio
- Pdfjpeg
- Pdfmarks
- Pdfmerge
- Pdfocg
- Pdfops
- Pdfpage
- Pdfpagelabels
- Pdfpaper
- Pdfread
- Pdfspace
- Pdfstandard14
- Pdftext
- Pdftransform
- Pdfunits
- Pdfutil
- Pdfwrite

Legend:
Library
Module
Module type
Parameter
Class
Class type

Extract Images

type pixel_layout =

| BPP1
| BPP8
| BPP24
| BPP48

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

val get_image_24bpp : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t

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 : 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_raw_24bpp : 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 : 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_unprocessed_pixel : 
  Pdf.t ->
  Pdf.pdfobject ->
  Pdf.pdfobject ->
  (int -> int array) option

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 colspace : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> Pdfspace.t

Given a PDF, an image and a /Resources dictionary, return the colourspace of the image

val bpc : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject option

Given a PDF and an image, return any /BPC entry