.TH "PS_OPEN_IMAGE" "3" 
.SH "NAME" 
PS_open_image \(em Reads an image for later placement 
.SH "SYNOPSIS" 
.PP 
#include <pslib.h> 
.PP 
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) 
.SH "DESCRIPTION" 
.PP 
Reads an image which is already available in memory. The parameter 
\fBsource\fR is currently not evaluated and assumed 
to be `memory'. The parameter \fBtype\fR 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 \fBbpc\fR 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. 
.PP 
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. 
.PP 
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 \fBPS_place_image(3)\fP 			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 \fBPS_set_parameter(3)\fP. 
.SH "RETURN VALUE" 
.PP 
Returns identifier of the image or zero in case of an error. 
The identifier is a positiv number greater 0. 
.SH "SEE ALSO" 
.PP 
PS_open_image_file(3), PS_place_image(3), PS_close_image(3) 
.SH "AUTHOR" 
.PP 
This manual page was written by Uwe Steinmann uwe@steinmann.cx. 
.\" created by instant / docbook-to-man