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• Port r17546 from Tremor ; although pieces had made it over to libvorbis, a comprehensive

  3 février 2012, par Monty

  Port r17546 from Tremor ; although pieces had made it over to libvorbis, a comprehensive
  port and verification was called for.  This patch provided some additional floor0
  hardening :
    floor0 code could potentially use a book where the number of vals it
  
    needed to decode was not an integer number of dims wide.  This caused
  
    it to overflow the output vector as the termination condition was in
  
    the outer loop of vorbis_book_decodev_set.
    None of the various vorbis_book_decodeXXXX calls internally guard
  
    against this case either, but in every other use the calling code does
  
    properly guard (and avoids putting more checks in the tight inner
  
    decode loop).
    For floor0, move the checks into the inner loop as there’s little
  
    penalty for doing so.
  [an equivalent change was already in libvorbis, but I’ve
  
  harmonized the code with tremor]
    For floor0, move the checks into the inner loop as there’s little
  
    penalty for doing so.  Add commentary indicating where guarding is
  
    done for each call variant.
  git-svn-id : http://svn.xiph.org/trunk/vorbis@18183 0101bb08-14d6-0310-b084-bc0e0c8e3800
  

  • [DH] lib/codebook.c
  • [DH] lib/floor0.c

• Who Invented FLIC ?

  26 mai 2011, par Multimedia Mike — Multimedia History

  I have been reading through “All Your Base Are Belong To Us : How 50 Years of Video Games Conquered Pop Culture” by Harold Goldberg. Despite the title, Zero Wing has yet to be mentioned (I’m about halfway done).

  
  
  

  I just made it through the chapter describing early breakthrough CD-ROM games, including Myst, The 7th Guest, and The 11th Hour. Some interesting tidbits :

  The 7th Guest
  Of course, Graeme Devine created a new FMV format (called VDX, documented here) for The 7th Guest. The player was apparently called PLAY and the book claims that Autodesk was so impressed by the technology that it licensed the player for use in its own products. When I think of an Autodesk multimedia format, I think of FLIC. The VDX coding format doesn’t look too much like FLIC, per my reading.

  Here’s the relevant passage (pp 118-119) :

  Devine began working on creating software within the CD-ROM disk that would play full-motion video. Within days he had a robust but small ninety-kilobyte player called PLAY that was so good, it was licensed by Autodesk, the makers of the best 3-D animation program at the time. Then Devine figured out a way to compress the huge video files so that they would easily fit on two CD-ROMs.

  Googling for “autodesk trilobyte play program” (Trilobyte was the company behind 7th Guest) led me to this readme file for a program called PLAY73 (hosted at Jason Scott’s massive CD-ROM archive, and it’s on a disc that, incidentally, I donated to the archive ; so, let’s here it for Jason’s tireless archival efforts ! And for Google’s remarkable indexing prowess). The file — dated September 10, 1991 — mentions that it’s a FLICK player, copyright Trilobyte software.

  
  
  

  However, it also mentions being a Groovie Player. Based on ScummVM’s reimplementation of the VDX format, Groovie might refer to the engine behind The 7th Guest.

  So now I’m really interested : Did Graeme Devine create the FLIC file format ? Multimedia nerds want to know !

  I guess not. Thanks to Jim Leonard for digging up this item : “I developed the flic file format for the Autodesk Animator.” Jim Kent, Dr. Dobbs Magazine, March 1993.

  The PLAY73 changelog reveals something from the bad old days of DOS/PC programming : The necessity of writing graphics drivers for 1/2 dozen different video adapters. The PLAY73 readme file also has some vintage contact address for Graeme Devine ; remember when addresses looked like these ?

  If you have any comments, please send them to :
  	Compuserve : 72330,3276
  	Genie : G.DEVINE
  	Internet : 72330,3276@compuserve.com
  

  The 11th Hour
  The book didn’t really add anything I didn’t already know regarding the compression format (RoQ) used in 11th Hour. I already knew how hard Devine worked at it. This book took pains to emphasize the emotional toll taken on the format’s creator.

  I wonder if he would be comforted to know that, more than 15 years later, people are still finding ways to use the format.

• Anomalie #3227 : Bug date de publication

  13 juin 2014

  Je confirme un bug sur la date. En base, 00XX-12-12 12:12 est enregistré 90XX-12-12 12:12

  En php 5.2.6 (spip 3.0.16) : la date est indiquée 1er janvier 1970 dans le privé et le public. L’article est classé comme le plus récent et il est visible dans le privé et le public mais là le bouton Admin "Prévisualiser" s’affiche.

  En php 5.4.4 (spip 3.0.16 et spip 3.1-dev) : la date indiquée est XX dans le privé et l’article est mis en post-publication. Dans le public, en mode préview, la date est OK mais l’article n’est (logiquement) pas publié.