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Conference hydra::amiga_v1

Title:	AMIGA NOTES
Notice:	Join us in the NEW conference - HYDRA::AMIGA_V2
Moderator:	HYDRA::MOORE

Created:	Sat Apr 26 1986
Last Modified:	Wed Feb 05 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	5378
Total number of notes:	38326

1353.0. "IFF compressing program?" by BAGELS::BRANNON (Dave Brannon) Tue Apr 19 1988 20:29

    Anybody have a program that will convert IFF uncompressed to IFF compressed?
    Preferably something that runs from the CLI and can be run from
    a command procedure (I have lots of pictures I'd love to compress).
    
    I've been trying to get one I wrote to work, somewhere I botched
    it.  I've been converting ST .TNY pics to IFF, but that has been
    working out to 2 Amiga disks = 1 ST disk since the ST pictures
    are compressed.  My "C" expertise is still limited to getting
    very confused trying to understand the CBM IFF programs.
    
    Thanks,
    -Dave

T.R	Title	User	Personal Name	Date	Lines
1353.1	Noah Turned His ARC into a ZOO	DICKNS::MACDONALD	WA1OMM Listening 52.525	`Tue Apr 19 1988 21:28`	1
	How about ZOO or ARC?
1353.2		BAGELS::BRANNON	Dave Brannon	`Tue Apr 19 1988 22:13`	12
	I considered that. But I just want to be able to set up a slideshow with compressed IFF files. Not something that has to be unpacked by another program before using it. It also bothers me that the ST world has .TNY pictures and a TNY picture viewer. IFF has had picture compression built into the format from day 1, but very few programs used it until recently. Just think of all that wasted disk space, 32K-128K per picture just waiting to be compressed. -dave
1353.3	...look on the bright side...	WAV14::HICKS	Tim Hicks @BXO	`Wed Apr 20 1988 14:05`	3
	Re: .2 Yes, but think of the boost that the 3.5" diskette makers got. 8^)
1353.4	DPAINT compresses pics	OLIVER::OSBORNE	Blade Walker	`Mon May 02 1988 15:57`	10
	re: .2 >IFF has had picture compression built into the format from day 1. True enough. Have you tried loading an IFF into DPAINT or DPAINT II and then saving it as another file? I know DP uses the file compression algorithm that is specified in the IFF documents, and while I'm no expert on compression, it seems pretty good... John O.
1353.5		BAGELS::BRANNON	Dave Brannon	`Mon May 02 1988 18:37`	9
	re: .4 Yes, I tried that. I just don't want to manually compress a lot of files that way. I guess the program I was looking for just doesn't exist. So its time to write one that will compress or decompress a directory of IFF pictures. The compression method is simple, but difficult to debug when you botch it. -dave