im_png2vips, im_png2vips - convert PNG images to and from VIPS format
int im_png2vips( const char *filename, IMAGE *out )
int im_vips2png( IMAGE *in, const char *filename )
im_png2vips(3) reads the png image in filename, and writes the image
out in VIPS format.
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
The mode string has the following syntax:
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.
im_vips2png fred.v fred.png
Writes a compression 6, uninterlaced PNG image.
im_vips2png fred.v fred.tif:,1
Writes an interlaced image.
Hey, you want this? You have it!
3 Jan 2003 IM_PNG(3)