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Efika 5200B Project
Reggae on Efika

in category Multimedia
proposed by Grzegorz Kraszewski on 21st February 2006 (accepted on 20th March 2006)

Blog Entry

  One step to animation
posted by Grzegorz Kraszewski on 26th July 2007

By quick hack to RView tool i was able to watch first anim GIF-s yesterday. I just made RView to fetch frames in a loop until error with 1/10 s of delay. Of course this fixed framerate distorted the timeline, but this will change soon. I have to implement frame disposition methods also, but the method 2 can be easily done with RECTFILL instruction of video metaformat, for method 3 I will need two more instructions: SAVE and RESTORE.

An API for animation timing is also needed. The first approach is to simulate fixed framerate of GIF animation by repeating frames. While ineffective for display, it is useful for processing (imagine inserting an anim into a bigger one, or even a movie). The second way will be to use metaformat with timing based on WAIT instructions, but this requires an application to implement a metaformat parser (very simple, but it has to be written anyway). That is why I plan a separate metaformat player as a Reggae class, running separate process and communicating to the application with messaging or rendering callbacks.

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