However, I want to be able to read 32-bit color values. How does
Memimage store colors and will the code I use work? I can change it
to 24-bit if necessary, but that would make it slower to read files.
If I do what these programs say, how will my u32int be arranged?
On Jan 26, 2008, at 9:05 AM, Russ Cox wrote:
Hello. I'm porting Bell Labs' Pico image language over to Plan 9 to
use the Plan 9 native image format (image(6)), and I chose to use
Memimage. I'd like to know how to get the 32-bit RGB pixel
information out of a Memimage and into a properly allocated array of
u32ints, and to do the reverse. Is that possible? Thanks.
A good way to answer questions like these is to
cd /sys/src/cmd
grep -n Memimage *.c */*.c */*/*.c
Looking through the output, all of these:
/sys/src/cmd/crop.c
/sys/src/cmd/resample.c
/sys/src/cmd/jpg/writepng.c
are examples of programs that use memimages
in a byte-at-a-time fashion.
Russ
