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NAME
runpcdviewer - reads and displays photocd images through the
invocation of a pcdviewer program
SYNOPSIS
runpcdviewer [ -d cd_path ][ -a audio_path ][ -c colorspace
][ -p default_directory ][ -h ][ -sdk ][ -k ]
AVAILABILITY
SUNWkcspg
DESCRIPTION
runpcdviewer is a shell script which sets up the resources
for and invokes the execution of a demo program called
pcdviewer. This program finds the directory which is serv-
ing as the mount point for the cdrom containing the photocd
disk and reads the disk. It displays thumbnail versions of
each image on the disk as well as the first base image. The
user may then invoke the "I" or information button to guide
him through the various display options. The text of the
information is included below.
INTERACTIVITY VS. SPEED
Reading images off of a CD is by its nature a rela-
tively slow process. Though XIL cannot make the
transfer rate off of the CD faster the easy to use
region of interest capabilities of XIL make it possible
to process images in pieces so that the program can
continue to be responsive even when doing an operation
which takes a long time. As you use this program try to
remember that you don't need to wait for operations to
complete to do other operations.
THE CONTACT SHEET
The contact sheet area is a scrollable list of
thumbnail images. These images are produced with XIL by
loading the smallest version of the image (192 by 128)
and scaling it down to 96 by 64. The thumbnail frames
are created immediately when the CD is open. The
thumbnails themselves load as time permits. You may
begin browsing through the list before all of the
thumbnails are loaded. Selecting a thumbnail will make
it the current image. If any of the image windows are
open they will be updated to show the selected image.
Selecting another thumbnail will interrupt any loading
and restart the loading of the new image.
EJECT
This button ejects the CD and waits for a new CD to be
inserted. When a new CD is inserted the thumbnails will
be loaded automatically. Allow a few seconds for the
CD to be mounted.
REMOTE CONTROL
This button brings up the remote control window. The
remote control window provides a simple interface for
selecting images by number, rotating images, and step-
ping through the images. If the CD in the drive is a
Portfolio CD the remote control uses the same buttons
as well as a few more to allow the user to make
choices, pause, and advance through the presentation.
CD INFORMATION
This button brings up a description of the CD which is
currently in the drive. It provides the serial number
of the CD, the creation date, the last time it was
modified, the number of images on the CD, the dimen-
sions of the highest resolution image on the CD, and
the number of sessions that are on the CD. If the CD
drive on the system is not a multisession CD the number
of sessions will always be 1 and only the images from
the first session will be readable. This information is
provided for demonstration purposes only and is not
available through the XIL interface.
IMAGE INFORMATION
This button brings up a description of the currently
selected image. It provides the date the image was
scanned, information about what it was scanned off of,
as well as who scanned it. For images which have been
modified since it was scanned the magnification factor
and the date of last modification are provided. A copy
of the slide is also provided. The slide is identical
to the slides in the main panel and can be selected to
make it the currently displayed image. More than 1 of
these windows can be displayed at once allowing com-
parisons of information as well as the ability to
easily switch between 2 or more images which are far
apart in the scrollable list. This information is pro-
vided for demonstration purposes only and is not avail-
able throught the XIL interface.
BASE
This button brings up the 768x512 version of the image.
Using XIL the image is read, converted to RGB, and
dithered if necessary. Using regions of interest the
image is loaded a small piece at a time allowing the
program to continue to be responsive while the image is
loading.
4BASE 16BASE 64BASE
When enabled these buttons provide access to the higher
resolution images (1536 by 1024, 3072 by 2048, and 6144
by 4096 respectively). Most images do not have a
64Base version and some do not have 4Base or 16Base
version. As with the base image these images are loaded
and processed using XIL. Using XIL's region of interest
capability only the portion of the image which is
displayed is read off of the CD allowing access to por-
tions of the higher resolution images faster than with
other programs. Once a section has been loaded it is
saved so you may notice the program takes a little
while to display the image when you first look at a
particular portion but will quickly redisplay it if you
leave that area and then return to it. Use the scroll
bars to change your view of the image. Resize the win-
dow to see more of the image at once.
SAVE
This button brings up the Image Save window. The Image
Save window allows PhotoCD images to be saved as either
Sun Raster or Tiff files with a colorspace or RGB
linear or RGB CCIR 709. The program will continue to
operate while the image is being saved (it often takes
a while for higher resolution images to be read off of
the CD and decompressed) including bringing up another
Image Save window to save another image. If an image
save is already in progress additional saves will be
queued up rather than happening simultaneously to
prevent system thrashing and problems with insufficient
memory. To allow confirmation of successful write the
window does not go away automatically. Use the cancel
button to dismiss the window when the "Done" message
appears or change the settings and save again.
HELP
The help button brings up this information in a scroll-
able window.
HOW WAS THIS DONE?
This demonstration was developed for SunSoft Inc. by
Makitso Graphics on a single 66Mhz 486 running Solaris
2.1 for x86, SunPro C 2.0.1, XIL 2.2, and Motif 1.2.2.
OPTIONS
-d cd_path specifies a path name to the cd images
-a audio_path specifies the path name to audio files
-c colorspace species the colorspace to use for photocd
colorspace conversion - one of the valid xil colorspaces
(photocd iamges are in "photoycc" space).
-h lists the above available options
-sdk requests use of the sdk color cube. It creates a
colorcube with reds=6 greens=7 blues=4, red changes fastest.
This is so the colormap is the same as other SDK demos.
Otherwise the standard xil colorcube will be used.
-k requests that the photocd images be passed through the
KCMS color correction profiles. At this time, the default
profiles are kcmsEKphcdcn04.inp for the photocd image and
the default configured visual profile for the current
machine (or kcmsEKcorona04.mon monitor profile if the
machine had not been configured). If the user sets the
environment variable, KCMS_PCD_PROFILE, to a photocd profile
name, that will be uses instead of the default photocd pro-
file. It is intended that the usr configure (and calibrate,
if possible) the monitor prior to running this program.
EXAMPLES
Example 1:
example% runpcdviewer -k
start the pcdviewer program and correct the image data
through KCMS device profiles using kcmsEKphcdcn04 as the
input profile (if KCMS_PCD_PROFILE is not set) and the
default configured visual (assuming either kcms_configure or
kcms_calibrate has been run).
ENVIRONMENT
KCMS_PROFILES is a colon separated list of directories con-
taining profiles. The KCMS library will search this list of
directories if the environment variable exists.
KCMS_PCD_PROFILE may be set to the name of an alternate pho-
tocd profile, which will override the hard-coded one.
SEE ALSO
profile_demo(6),print_montbls(6),print_header(6),kcms_configure(1)
kcms_create(6), kcms_update(6), kcmstest_tiff(6),
kcms_photocd, kcms_calibrate(1)
DIAGNOSTICS
runpcdviewer will display errors relating to profile exis-
tance and access.
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