Ok, according to the PDFlib docs,
bpc - only for imagetype raw (required in this case). The number of bits per component. Must be 1,2,4 or 8
components - only for imagetype raw (required in this case). The number of image components. Must be 1, 3 or 4.
Read the docs (page 171) for a full list of params I assume are used for the last argument.
pdf_open_image
Description
int pdf_open_image ( resource pdfdoc, string imagetype, string source, string data, int length, int width, int height, int components, int bpc, string params )Use image data from a variety of data sources. Supported types are jpeg, ccitt, raw. Supported sources are memory, fileref, url. len is only used when type is raw, params is only used when type is ccitt.
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User Contributed Notes
K
24-Apr-2003 08:36
24-Apr-2003 08:36
tfraser at jeffsys dot net
06-Mar-2003 05:41
06-Mar-2003 05:41
If you want to open a TIFF image, you have to use pdf_open_image_file(). If you want to open a TIFF image from memory, you'll have to wait until version 5. I gleaned this from the PDFlib folks themselves:
> from rp@pdflib.com
The only way to open TIFF with PDFlib 4 is to open it from
file. But in PDFlib 5 (http://www.pdflib.com/beta/) we add
a virtual file system, so you can easy open a file from
memory.
lindsayNOSPAM at NOSPAMdingos dot net
20-Dec-2002 10:42
20-Dec-2002 10:42
if you ahve pdflib v4 or higher, you may also use TIFF images, by specifying 'tiff' in the image type.
checked the pdflib documentation, tried it out, it works.
nils at deviant dot no
16-Jan-2002 09:00
16-Jan-2002 09:00
a quick example:
$pdfimage = pdf_open_image_file($pdf, "jpeg", "test.jpg");
pdf_place_image($pdf, $pdfimage, 10, 10, 0.6);
...
pdf_close etc..
bob at nijman dot de
02-Aug-2001 11:05
02-Aug-2001 11:05
mark troyan wrote:
> Can you use the PDF_open_image to handle gif's? How?
and Thomas Merz answered:
Nope. Unfortunately PDF supports _nearly_ everything needed
to decode GIFs internally (as with JPEG), but some minor
feature is missing. It seems Adobe also realized this --
they added the missing link in PostScript 3, so chances are
it will appear in PDF 1.4 or something...
Since the PDF_open_image() interface is meant for dumping
the image data to the PDF without any further interpretation,
it can't support GIF.
Found at:
http://groups.yahoo.com/group/pdflib/message/301
bob at nijman dot de
02-Aug-2001 08:54
02-Aug-2001 08:54
For good and easy to understand examples on images in PDFs go to
http://www.dynamicwebpages.de/50.tutorials.php?dwp_tutorialID=13
(It's in german, but the sources alone will be a great help and inspiration :-))