debian man page for ps_open_image

PS_OPEN_IMAGE(3)					     Library Functions Manual						  PS_OPEN_IMAGE(3)

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 param-
       eter 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  replay-
       ing  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)