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2007-08-07
, 22:20
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Posts: 2,152 |
Thanked: 1,490 times |
Joined on Jan 2006
@ Czech Republic
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#12
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Originally Posted by daihard
Yes. Google for OMAP 1710 (used in N770) or 2420 (N800). There is C55x DSP CPU together with ARM CPU. MP3 decoding runs on DSP.
Is a DSP some sort of an onboard processor for MP3?
__________________
Newbies click here before posting. Thanks.
If you really need to PM me with troubleshooting question please consider posting it to the forum instead. It is OK to PM me a link to such post then. Thank you.
Newbies click here before posting. Thanks.
If you really need to PM me with troubleshooting question please consider posting it to the forum instead. It is OK to PM me a link to such post then. Thank you.
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2007-08-07
, 22:38
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Posts: 29 |
Thanked: 0 times |
Joined on Mar 2007
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#13
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I also believe that the stock vorbis library makes use of alot of floating point operations which is harder to do for the ARM types. I think I saw an eariler effort to make an ARM version of the library some time ago.
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2007-08-08
, 03:25
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Posts: 68 |
Thanked: 1 time |
Joined on Aug 2007
@ Lynnwood, WA
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#14
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Originally Posted by fanoush
Thanks! You guys sure know a lot. I'm really impressed with the quality of the posts made in this forum.
Yes. Google for OMAP 1710 (used in N770) or 2420 (N800). There is C55x DSP CPU together with ARM CPU. MP3 decoding runs on DSP.
__________________
Registered Linux User: #281828
Fedora Core 6 / Nokia N800
Registered Linux User: #281828
Fedora Core 6 / Nokia N800
Last edited by daihard; 2007-08-08 at 03:27.
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2007-08-08
, 03:44
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Posts: 1,107 |
Thanked: 720 times |
Joined on Mar 2007
@ Germany
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#15
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As a business decision i can understand nokia not paying for developing ogg playback in the DSP.
As a proponent of open standards and open source software I find this a sad state of affairs. Ogg is superior to mp3 and patent-free, however the mp3 patent holders keep making vague threats about prosecution against ogg implementations. This scares some companies away. Perhaps nokia too.
This is a crying shame because many games use ogg music. There is a fast ogg decoder (libvorbisidec, also called the 'tremor' library), but it sucks about 10-12% cpu.
To get music playback without the performance penalty i have to convert ogg to mp3 and host the data for the games. What a waste.
I know of one guy who would be interested in implementing ogg playback on the DSP processor, but he's being hampered by lack of access to kernel headers for the dsp. Please support the cause and request dsp accelerated ogg-vorbis playback in the next nokia tablet.
Cheers
As a proponent of open standards and open source software I find this a sad state of affairs. Ogg is superior to mp3 and patent-free, however the mp3 patent holders keep making vague threats about prosecution against ogg implementations. This scares some companies away. Perhaps nokia too.
This is a crying shame because many games use ogg music. There is a fast ogg decoder (libvorbisidec, also called the 'tremor' library), but it sucks about 10-12% cpu.
To get music playback without the performance penalty i have to convert ogg to mp3 and host the data for the games. What a waste.
I know of one guy who would be interested in implementing ogg playback on the DSP processor, but he's being hampered by lack of access to kernel headers for the dsp. Please support the cause and request dsp accelerated ogg-vorbis playback in the next nokia tablet.
Cheers
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2007-08-08
, 12:06
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Posts: 102 |
Thanked: 16 times |
Joined on Sep 2006
@ Manchester
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#16
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subscribe yourslef to the bug report https://bugs.maemo.org/show_bug.cgi?id=1035 the more people do, the more nokia will know how much it is wanted.
(another alternative is to file a new bug about it, then the nokia devs have to mark it as a dupe of the first one)
update:
just noticed that the maemo bugzilla has voting enabled, so you can add a vote to the bug
(another alternative is to file a new bug about it, then the nokia devs have to mark it as a dupe of the first one)
update:
just noticed that the maemo bugzilla has voting enabled, so you can add a vote to the bug
__________________
put wikipedia on you 770 or n800
put wikipedia on you 770 or n800
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2007-08-08
, 12:52
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Posts: 11,700 |
Thanked: 10,045 times |
Joined on Jun 2006
@ North Texas, USA
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#17
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The tablet software folks do care about Ogg.
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2007-08-08
, 14:04
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Posts: 660 |
Thanked: 685 times |
Joined on Jul 2007
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#18
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I sure wish that OGG was better supported. I have an iAudio X5L that holds close to 30GB of OGGs. That player is ugly but functionally amazing. So I am firmly entrenched in OGG. People need to realize that OGG is better and free. What's not to love?
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2007-08-08
, 17:43
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Posts: 68 |
Thanked: 1 time |
Joined on Aug 2007
@ Lynnwood, WA
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#19
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Originally Posted by Texrat
I am sure they do. I just wish there was a simple solution to the issue.
The tablet software folks do care about Ogg.
__________________
Registered Linux User: #281828
Fedora Core 6 / Nokia N800
Registered Linux User: #281828
Fedora Core 6 / Nokia N800
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2007-08-08
, 17:47
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Posts: 68 |
Thanked: 1 time |
Joined on Aug 2007
@ Lynnwood, WA
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#20
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Originally Posted by ssam
Thanks! I just created an account there and added my comment to the specific bug.
subscribe yourslef to the bug report https://bugs.maemo.org/show_bug.cgi?id=1035 the more people do, the more nokia will know how much it is wanted.
(another alternative is to file a new bug about it, then the nokia devs have to mark it as a dupe of the first one)
update:
just noticed that the maemo bugzilla has voting enabled, so you can add a vote to the bug
__________________
Registered Linux User: #281828
Fedora Core 6 / Nokia N800
Registered Linux User: #281828
Fedora Core 6 / Nokia N800
Would you be kind enough to elaborate on that? Is a DSP some sort of an onboard processor for MP3?