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Subject: Gapless Playback Engine

Gapless Playback Engine

From: Spam Me <>
Date: Thu, 21 Oct 2004 22:00:46 +0200

I have a great interest in the development of a playback-engine with
support for multiple codecs. I'm an iRiver owner and don't know much
about Archos hardware, but my impression is that a major difference
between the Archos and the iRiver firmware, is the fact that iRiver
don't have any hardware codec-decoder chip, but needs to do all the
decoding on its Motorola MFC5249 CPU.

To me it seems natural to use this "opportunity" to make a
playback-engine for iRiver which support both gapless playback and
maybe even crossfading capabilities. There probably is a lot of
problems in designing such an engine which will have to be considered
and I think the Rockbox project will benefit from analyzing the
gapless playback problem at an early stage before making functional
playback-engine for each of the different codecs - this might avoid
problems which demand a re-design and re-programming of the
playback-engine later.

What are the possibility for implementing other codecs than mp3 on the
Archos players and should the Archos hardware be kept in mind when
designing this playback-engine which is compatible with the iRiver

The codecs which I find interesting to investigate is:

OGG (Ogg Vorbis)
FLAC (Free Lossless Audio Codec)
MPC (MusePack - a fixed-point decoder has just been released)

I really like some input on this issue and if someone with
developer-skills have free hands, then please feel free to contact me
- designing a gapless playback-engine is not a one-man project :)
Received on 2004-10-21

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