Photo Processing , Gallery and IPTC Data app

[Ian Wood]

On 27 Jan 2008, at 04:55, Sivakatirswami wrote:

> If it were Apple Only it would be so easy, but we need a cross  
> platform solution. Andre is looking into SIPS (yes if you have code  
> we could use it!)

See below for some sample code. ImageMagick would do things like  
resizing on multiple platforms, but I've not used to know how much  
installation is involved.

> and he is looking at a VB /ASP solution for Windows.
> But, at least for version 1.0  if photos are coming in at 2.5 Megs  
> of smaller (typical for my users) a clean native transcript solution  
> for the downsizing and preview thumbnails is not all that  
> bad...open, scale down, write image data to a new image and save  
> out... if you do it as invisible.

To be honest I've lost track of the maximum pixel dimensions that Rev  
can deal with in image object without having to use a QT player object  
instead. I just remember having problems with anything bigger than  
about 6 megapixels. The file size has nothing to do with it.

> Professionals tend to be speed addicts and they can't stand it. they  
> want the computer do everything right now...

Only too true... ;-)

> So then we only need to write a small bit of IPTC data, data,  
> caption, author of caption, that's about it, keywords  
> possibly...back into the files... so that's were EXIFTools comes in.

That makes life a lot easier.


SIPS stuff:

function ijwAPLIB_SIPSRotateImage tInput, tDegrees, tOutput
if tDegrees = 0 then return true
put ijwAPLIB_MakeOSXShellPath(tInput) into tShellInput
put "sips -r" && tDegrees && tShellInput into tScript
if tOutput is not empty then
put ijwAPLIB_MakeOSXShellPath(tOutput) into tShellOutput
put space & tShellOutput after tScript
end if
return shell(tScript)
end ijwAPLIB_SIPSRotateImage

function ijwAPLIB_SIPSImageInfo tPath, tInfo
put ijwAPLIB_MakeOSXShellPath(tPath) into tPath
put "sips -g" && tInfo into tScript
put space & tPath after tScript
get shell(tScript)
return last word of it
end ijwAPLIB_SIPSImageInfo

function ijwAPLIB_MakeOSXShellPath tPath
put "set tOut to quoted form of POSIX path of tPath" into tScript
replace "tPath" with quote & revMacFromUnixPath(tPath) & quote in  
tScript
do tScript as applescript
put the result into tNewPath
delete char 1 of tNewPath
delete last char of tNewPath
return tNewPath
end ijwAPLIB_MakeOSXShellPath


Type 'man sips' into the terminal for a list of properties that can be  
retrieved, 'pixelHeight' and pixelWidth' are particularly useful for  
seeing if an image is small enough to load into Rev without using a QT  
player.
The shell path function isn't particularly pretty, but it works...

Ian