WEBPHOTO(1) WEBPHOTO(1)
NAME
webphoto - internet photo album
exifsrv - expand EXIF metadata in digital camera files
SYNOPSIS
webphoto
exifsrv [ -m perm ][ -s name ]
DESCRIPTION
Webphoto renders simple directories of image files as an
html photo album, Digital Camera image files require no
pre-processing, they just need to be placed in a directories
under /usr/photos. The name of the directory becomes the
title of the album, the image file name becomes the caption
of the image.
Webphoto renders images as a thumbnails, directories as a
thumbnail of the first image in that directory (with a down
arrow), and directories containing no photos or unreadable
directories as a query icon.
Clicking on directory thumbnail decends into that image
directory, clicking on an image thumbnail displays the image
with a drop shadow. Clicking on this with display a thumb-
nail again, and any available camera metadata.
Webphoto can operate unassisted but the thumbnail and meta-
data features require exifsrv(4). Exifserv allows webphoto
to extract thumbnails and EXIF metadata from digital camera
images rather than downloading full sized images and resiz-
ing them on the client's browser.
The name that exifsrv(4) posts in /srv may be modified with
the -n option, the default is exif, and its file permission
flags changed using -m. The file permissions must be modi-
fied for exif to work in conjunction with webphoto as that
is envoked from httpd and runs as none. Exifsrv takes care
to change its uid to none if the user mounting its /srv file
is not the same as its origional envoker.
EXAMPLE
# add this line to /lib/namespace.html
mount #s/exif /usr/photos /usr/photos
# add these lines to cpurc
exifsrv -m 666
ip/httpd/httpd
# populate /usr/web with your pictures,
# these must be readable by anyone
WEBPHOTO(1) WEBPHOTO(1)
# follow this link
http://www.yoursite.dom/magic/webphoto?dir=/
BUGS
Its a shame that webphoto does not contain any resizing
code. For JPEGs this could be a lossless decode using just
the DC coeficents from the DCTs, which would give an 8:1
size reduction for minimal processing.
The fullsize file created by exifsrv should present a rea-
sonabbly sized image for internet content rather than the
entire photo file including metadata and thumbnail, downsam-
pling as required. This will become more important as very
high resolution digital cameras become common.