home *** CD-ROM | disk | FTP | other *** search
- Path: nntp.teleport.com!sschaem
- From: sschaem@teleport.com (Stephan Schaem)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Is a real good mpeg player possible on the amiga ?
- Date: 27 Jan 1996 23:42:15 GMT
- Organization: Teleport - Portland's Public Access (503) 220-1016
- Message-ID: <4eed8n$pte@maureen.teleport.com>
- References: <4e2gqu$5ca@caers3.unicaen.fr> <oj6ensqud6u.fsf@hpsrk.fc.hp.com> <4e5l6r$r5l@ulke.hiMolde.no> <4e616e$9hq@serpens.rhein.de>
- NNTP-Posting-Host: julie.teleport.com
- X-Newsreader: TIN [version 1.2 PL2]
-
- Michael van Elst (mlelstv@serpens.rhein.de) wrote:
- : runee@hai.hiMolde.no (Rune Espeseth) writes:
-
- : >Maybe when someone gets their finger out and start making an mpeg-player
- : >that supports cybergraphics (24bit) speeds will start showing.
- : >(Won't have to do c2p and color-decoding to 8 bit.)
- : >So, anyone ? :)
-
- : Most 24bit output modes in mp1.03 do not have to do c2p or
- : color-decoding to 8bit. However, they still have to convert
- : from 24bit YUV to 24bit RGB and transfer the data to the card.
- : And no, these aren't significantly faster (depending on your
- : graphics card these are even slower).
-
- If you had something like 'direct draw', something you are totaly
- oposed too, and say is no speed advantage, you could interleave
- pixel write with pixel calculation.
- ex, is if your cpu can decode .5 million pixel second and your
- video card as a bandwidth of .5 mpix second... if you do decode
- then copy VS decode+write you will run twice slower (Worse case).
- Also mp would not run slower on a firecracker VS cybergfx unless
- the decoding take less then the card bandwidth.
- Maybe the least would be YUV to RGB free...
-
- Stephan
-