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Rockbox mail archiveSubject: Re: MPEG thread global struct interface defnRe: MPEG thread global struct interface defn
From: Lion Templin <ltemplin_at_leonine.com>
Date: Sat, 1 Jun 2002 02:07:21 -0500 (CDT) On Sat, 1 Jun 2002, Dave Chapman wrote: > Do you also need the current position in seconds? We seemed to think that it would be difficult to know the fileposition by time becuase of the buffering nature of the internal MPEG chipset. Since I am not yet aquainted with the specifics of loading streams into the chipset, I can't comment from first-hand knowledge and my assumptions have been more "blackbox" than anything. Other developers seemed to indicate this was the case. The idea was to implement a method where the total time of a track is computed before it is sent to the player, then an independant clock is ran and controlled by changes in this structure as necessary. Fileposition can also give us an accurate method of recomputing time independantly of the player. > What about mpeg_version and mpeg_layer? Useful, and I will add to my version. My construction of this simple struct is a byproduct of a greater project I mean to undertake (provided it's usefulness), which is to provide a high degree of abstraction between the top layer UI code and the underlying LCD screen. Both the Archos firmware and this project suffer from a very immature UI becuase of the limitations of the LCD controller used (a problem in the player, of which I own. I plan to ignore the recorder, for it can be bitmap addressed). My plan is to build a virtual screen, much like the ncurses library, and manage the loading, display, and storage of custom single and multi-part characters. One of the primary applications I plan on using this library for is to have a custom 5x5 or 5x6 font combined with a progress bar that spans multiple cells. Until, of course, I found that the primary caller of the MPEG thread ('apps/play.c') doesn't have any idea of what's going on in the MPEG thread itself. Lion = lion is Lion J Templin (KB9ENE) lion_at_leonine.com = = || // ||> UNIX Systems Consulting for the = = ||=EONINE \OMPUTATIONAL ||\ESOURCES Northland FROM the Northland = = UNIX Systems Consultants http://www.leonine.com = Received on 2002-06-01 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |