NAME

       PS_open_image — Reads an image for later placement

SYNOPSIS

       #include <pslib.h>

       int  PS_open_image(PSDoc  *psdoc,  char  *type,  char *source, char *data, int lenght, int
       width, int height, int components, int bpc, const char *params)

DESCRIPTION

       Reads an image which is already available in memory. The parameter source is currently not
       evaluated  and  assumed  to  be `memory'. The parameter type can be either `raw' or `eps'.
       Images in raw format are expected to be a stream of pixels starting in the upper left  and
       ending  in  the  lower  right corner. Each pixel is a tuple of components representing the
       colors. Each component consists of bpc bit. Color  imgags  expect  the  components  to  be
       stored in RGB or CMYK order. The number of components implies the colorspace. 4 components
       imply a CMYK image and not an RGB image with an alpha channel.  This  restriction  may  be
       removed in later versions.

       EPS images are expect as stored in a file. There is no need to set any other paramter. The
       height und width of the image is taken from the bounding box within the image data.

       Since version 0.4.5 of pslib images are read by default for later reuse. This  means  that
       the   image   is   saved  into  a  so  called  reusable  stream  object.  Later  calls  of
       PS_place_image(3)             will only put a short sequence of postscript code  into  the
       output file replaying the image.  This reduces the overall postscript file size, speeds up
       its processing by the postscript rip and allows  to  place  images  into  templates.  This
       behaviour  can  be  turned  off  by  setting  the  parameter  `imagereuse'  to  false with
       PS_set_parameter(3).

RETURN VALUE

       Returns identifier of the image or zero in case of an error.  The identifier is a  positiv
       number greater 0.

SEE ALSO

       PS_open_image_file(3), PS_place_image(3), PS_close_image(3)

AUTHOR

       This manual page was written by Uwe Steinmann uwe@steinmann.cx.

                                                                                 PS_OPEN_IMAGE(3)