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This thread is locked; no one can reply to it.
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| Write My Own MP3 Decoder? |
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Billybob
Member #3,136
January 2003
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I'm looking for good resources on writing my own MP3 decoder. Sounds silly, I know. This is for an embedded system. I don't think mpg123 will compile easily for an embedded system. Thanks!
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Marco Radaelli
Member #3,028
December 2002
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Quote: This is for an embedded system. What about using an hardware decoder?
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Thomas Fjellstrom
Member #476
June 2000
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libmad has a integer decoder for those devices with no floating point support. But yeah, if you have the option of using a hardware decoder, do it. Sparkfun sells some -- |
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Spyridon Gulgas
Member #8,150
December 2006
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MP3 Decoder... what do you mean by that: like a MP3 File Parser (some programs have those) google a program called MPXPlay. made in OpenWatcom 1.30 emulates every Soundboard with OGG\MP3\WMA\ect. support! Source Available! Get IT! I know some OS's if needed that work under ROM: FreeDOS - Good ol' DOS, the mighty Allegro Started on DOS! DSL - A VERY FREAKIN SMALL Linux DISTRO!!! CLI and no packs (for minumum download)! DOS Alive, DOS Community and Restoration project |
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Michael Jensen
Member #2,870
October 2002
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Using a hardware decoder is the best option for embedded devices since they've got almost no processing power/memory to speak of. I'm curious though: would the device need to be able to parse the files at all? Or can you just send an entire .mp3 file straight to the chip raw?
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ImLeftFooted
Member #3,935
October 2003
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I've heard it is very hard to do. (sorry I can't be more helpful |
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Michael Jensen
Member #2,870
October 2002
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Wow, $11! -- I remember seeing the "build it yourself mp3 player" project back in like 99 or so, and the IC you had to buy was like $60+ (the total parts cost was around $110, IIRC)
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Billybob
Member #3,136
January 2003
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Well I wanted to do it in software so I can save money on the chip. It's not $11, it's $11 + the cost of all the components needed to drive it. Timing crystal, resistors, capacitors, board, power supply, etc, etc. Sparkfun does have this breakout board with everything, for $40. I suppose that's what I'll go with since it's easiest. It's an unfortunately large amount of my budget though
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Marco Radaelli
Member #3,028
December 2002
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Well, if you go for the software way, you'll anyway need a cpu, maybe it would be less expensive, but then you'll need the circuitry to program it Quote: I don't think mpg123 will compile easily for an embedded system. I don't know on which dependencies it relies on, but IIRC gcc can cross-compile to arm processors.
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