RAM optimized version of Tremor for ARM |
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RAM optimized version of Tremor for ARM |
  Feb 28 2003, 16:24
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#1
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ARMv4 MPC Decoder developer Group: Developer Posts: 26 Joined: 5-November 01 From: Fuzhou Fujian Member No.: 406  |
My RAM optimized version of Tremor for ARM reach beta state. It can play 44.1 khz, upper then 64kbps stereo vorbis file encoded by libvorbis 1.0.
Need about 30kB RAM, 300kB ROM. Continue optimizing now using ASM. Still missing : seek Problem:need 50KB RAM to support low birate, but the chip only has 48kB need too many ROM to store residue huffman book for all mode, about 1MB. Otherwise it still a road to support vorbis decode on low resouce RISC and DSP chip. Exciting that my cheap player supports mp123,mpc,aac and vorbis now! |
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Feb 28 2003, 16:51
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#2
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Neutrino G-RSA developer Group: Developer Posts: 852 Joined: 8-May 02 From: Geneva Member No.: 2002 |
It's great ! Please, just ensure to support gapless playback + album/track gain for mpc, then all the people I know will buy it (due to my advice of course)
 By the way, why do lower Vorbis bitrates need more memory ? Oh, you mean, including those would need a few more constant tables ? Keep up the good work. This post has been edited by NumLOCK: Feb 28 2003, 16:53 -------------------- Try Leeloo Chat at http://leeloo.webhop.net
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Feb 28 2003, 17:56
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#3
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Group: Members Posts: 757 Joined: 8-October 01 Member No.: 247 |
QUOTE (c.b.2000 @ Feb 28 2003 - 04:24 PM) Exciting that my cheap player supports mp123,mpc,aac and vorbis now! Very exciting indeed! Is it possible to buy such a player yet or do you have some special developer's version? |
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Mar 1 2003, 10:48
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#4
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ARMv4 MPC Decoder developer Group: Developer Posts: 26 Joined: 5-November 01 From: Fuzhou Fujian Member No.: 406 |
for 44.1khz < 64kbps vorbis, it use bigger window size 4096. for >64kbps, only 2048. so it need twice RAM to store internal data.
this player is still in developing, buggy. |
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Mar 1 2003, 16:42
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#5
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 Server Admin Group: Admin Posts: 4810 Joined: 24-September 01 Member No.: 13 |
If you have specific problems, like for example the memory usage of the huffman tables, try segher@xiph.org, he can probably help you.
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Jul 11 2004, 09:14
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#6
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Group: Members Posts: 1234 Joined: 5-October 01 Member No.: 220 |
I am also interested in this player. Seems like it could become a gem for us!
This post has been edited by westgroveg: Jul 11 2004, 09:26 |
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Jul 11 2004, 10:54
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#7
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Group: Members Posts: 751 Joined: 1-October 01 From: Falkenberg Member No.: 3810 |
Add PS HE-AAC and I'm in ;o)
-------------------- http://davidnordin.wordpress.com/
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Lo-Fi Version | Time is now: 19th June 2013 - 09:24 |
