| .TH IM_PNG 3 "3 Jan 2003" |
| .SH NAME |
| im_png2vips, im_png2vips \- convert PNG images to and from VIPS format |
| .SH SYNOPSIS |
| #include <vips/vips.h> |
| |
| int im_png2vips( const char *filename, IMAGE *out ) |
| |
| int im_vips2png( IMAGE *in, const char *filename ) |
| |
| .SH DESCRIPTION |
| .B im_png2vips(3) |
| reads the png image in filename, and writes the image out |
| in VIPS format. |
| |
| .B im_vips2png(3) |
| reads the image in and writes a PNG file to the specified |
| filename. The filename may include an optional mode string, following a ':' |
| character, which you can use to specify compression and interlace. |
| |
| The mode string has the following syntax: |
| |
| <compression>,<interlace> |
| |
| where <compression> is an integer between 0 and 9 specifying the amount of |
| compression (6 is the default), and <interlace> is 0 for no interlace (this is |
| the default) and 1 for ADAM7 interlace. |
| |
| Beware that writing an interlaced image is potentially up to 7 times slower |
| than writing a non-interlaced image. |
| |
| The image is automatically converted to RGB or Monochrome (with an optional |
| alpha channel) before saving. |
| |
| .SH EXAMPLES |
| |
| The call: |
| |
| im_vips2png fred.v fred.png |
| |
| Writes a compression 6, uninterlaced PNG image. |
| |
| im_vips2png fred.v fred.tif:,1 |
| |
| Writes an interlaced image. |
| |
| .SH SEE ALSO |
| im_open(3), im_vips2tiff(3) |
| .SH COPYRIGHT |
| Hey, you want this? You have it! |
