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Showing results 1 to 25 of 94 @ 0.04 seconds. Search: Posts Made By: Serge
Forum: OS2008 / Maemo 4 / Chinook - Diablo 2010-07-02, 22:56
Replies: 356
Views: 183,077
Posted By Serge
Re: A2DP works, help me test it?

Upstream bluez SBC codec got ARMv6 optimizations, which should be very useful for reducing A2DP CPU load on Nokia N800/N810:...
Forum: Nokia N900 2010-04-11, 13:25
Replies: 33
Views: 9,031
Posted By Serge
Re: Why does Nokia give us such a low default 600MHz?

They were not overclocked for sure. Those chips are "speed sorted OMAP2" and are really rated by TI as being able to run at 400MHz clock frequency. Have a look here:...
Forum: Nokia N900 2010-04-05, 14:35
Replies: 5,350
Views: 2,032,432
Posted By Serge
Re: Overclock the N900?

It seems to be more complex than this. Based on the tables from the datasheet, the lifespan gets significantly shorter if CPU runs more than 1/4 of time at 600MHz. I guess in reality there are no...
Forum: Nokia N900 2010-04-05, 14:14
Replies: 5,350
Views: 2,032,432
Posted By Serge
Re: Overclock the N900?

That's not quite right, the device is actually in off mode most of the time (and not clocked at all), so it is neither running at 125MHz nor 250MHz. The lowest operating point helps to reduce battery...
Forum: Nokia N900 2010-04-05, 13:46
Replies: 5,350
Views: 2,032,432
Posted By Serge
Re: Overclock the N900?

There is an official datasheet from TI (for omap3530 which is very similar to omap3430) with the information about the expected lifespan. Running the chip all the time at 600MHz vs. 500MHz already...
Forum: Nokia N810 2009-06-20, 17:58
Replies: 71
Views: 44,780
Posted By Serge
Re: Using PC to delete the wrong partition will fix the problem if stepped into this

Just don't use sfdisk, it is buggy and can fail like this. Unless somebody gets really annoyed and fixes it, fdisk is a much better alternative :)

You could also just clear the flash card...
Forum: Multimedia 2009-06-05, 12:53
Replies: 10
Views: 4,337
Posted By Serge
Re: N810 media player, very strage issue

You can try to reflash kernel only. Take the latest official firmware and unpack it:
flasher -u -F RX-44_DIABLO_5.2008.43-7_PR_COMBINED_MR0_ARM.bin
You will get lots of files extracted. File zImage...
Forum: Multimedia 2009-06-05, 12:26
Replies: 10
Views: 4,337
Posted By Serge
Re: N810 media player, very strage issue

Looks like blizzard video overlay is not working right (when something is displayed on top, Xv switches to a slower omap dispc overlay). Did you install any third-party kernels that might have broken...
Forum: Multimedia 2009-05-30, 00:00
Replies: 152
Views: 39,746
Posted By Serge
Re: Video can be better than expected !

Are you by chance looking for -nozoom mplayer option?
Forum: Community 2009-05-06, 11:32
Replies: 210
Views: 38,756
Posted By Serge
Re: Who finds themselves coming to these forums less after the change of image?

Yes, I also prefer to use a standard classic theme and ITT is not the only forum that I visit regularly. For me it is more important to have a standard, convenient and consistent UI across different...
Forum: Community 2009-05-02, 14:30
Replies: 210
Views: 38,756
Posted By Serge
Re: Who finds themselves coming to these forums less after the change of image?

I myself prefer to have two things in any kind of forum:
1. Efficient use of screen width so that more information is visible
2. Dark text on light background (but not bright white background!)
...
Forum: Multimedia 2009-03-15, 04:38
Replies: 49
Views: 35,773
Posted By Serge
Re: Best video quality supported by N800 and N810 via mpalyer

Yes, audio pipeline is a major pain on N8x0 devices. It goes through ESD daemon and ends up in DSP. It is hard to even get audio/video playback in sync, let alone be sure that no extra cpu resources...
Forum: Multimedia 2009-03-15, 03:48
Replies: 49
Views: 35,773
Posted By Serge
Re: Best video quality supported by N800 and N810 via mpalyer

The amount of data may be fixed, but it does not mean that the amount of work to be done will be fixed as well when decoding video. Scenes with lots of motion or panning still take more cpu than...
Forum: Multimedia 2009-03-14, 16:59
Replies: 49
Views: 35,773
Posted By Serge
Re: Best video quality supported by N800 and N810 via mpalyer

That's a vague statement. Of course any software is limited by hardware capabilities. But reaching the real hardware bounds is possible only with really well optimized software. And mplayer/ffmpeg is...
Forum: OS2008 / Maemo 4 / Chinook - Diablo 2009-03-05, 08:15
Replies: 356
Views: 183,077
Posted By Serge
Re: A2DP works, help me test it?

You probably need a gstreamer plugin for mp3, which works both as sink and source.

Also sbc gstreamer plugin is very slow and has huge cpu overhead. I have not measured its performance on ARM11...
Forum: Nokia 770 2009-03-04, 10:15
Replies: 2
Views: 2,220
Posted By Serge
Re: Constant rebooting!

http://www.internettablettalk.com/forums/showthread.php?t=11824
Forum: OS2008 / Maemo 4 / Chinook - Diablo 2009-02-22, 00:21
Replies: 356
Views: 183,077
Posted By Serge
Re: A2DP works, help me test it?

Hello,

Regarding A2DP performance on N800/N810. Using the latest diablo firmware, a2dp-support_0.9_all.deb package and nothing else, we get the following profiling statistics (Signed 16 bit Little...
Forum: Applications 2009-01-31, 22:22
Replies: 3
Views: 11,788
Posted By Serge
Re: Fast XV video output in MPlayer

MPlayer has always supported these configuration options.

The point is that XV got ARMv6 optimizations for the color format conversion (https://bugs.maemo.org/show_bug.cgi?id=1278), but also now...
Forum: Applications 2009-01-30, 22:54
Replies: 3
Views: 11,788
Posted By Serge
Fast XV video output in MPlayer

Many of you probably know that mplayer uses '-vo omapfb' video output code with direct framebuffer access in order to improve performance. But XV can be almost as fast with the help of some...
Forum: General 2009-01-19, 08:17
Replies: 13
Views: 7,947
Posted By Serge
Re: Change settings for Video Playback in Mplayer

MPlayer will not play mp4 videos well (h.264 codec). It it missing armv6 assembly optimizations for it, which is quite a bit of work and needs to be done by somebody. Moreover, armv6 optimizations...
Forum: OS2008 / Maemo 4 / Chinook - Diablo 2008-12-25, 13:06
Replies: 205
Views: 67,575
Posted By Serge
Re: SSU 5.2008.43-7 is available

Yes, xserver optimizations from 5.2008.43-7 improve fonts rendering speed and graphics blitting operations. This results in some small performance improvement practically everywhere, and in the...
Forum: General 2008-12-10, 15:22
Replies: 49
Views: 18,798
Posted By Serge
Re: Canonical and ARM officially porting Ubuntu to ARM

armv5te, armv6 or armv7 are most useful when having hand crafted optimizations for these instruction sets. The difference can be very significant, especially for multimedia. But the compiler itself...
Forum: General 2008-12-03, 20:36
Replies: 62
Views: 14,946
Posted By Serge
Re: Is the Maemo5 development/release process unprecedented?

No comments about powervr, but 4.2008.36-5 diablo software update had introduced fixes for tearing problems in the omapfb kernel driver.


You can even have full 800x480 resolution tearfree rgb,...
Forum: Nokia N810 2008-11-17, 01:28
Replies: 43
Views: 10,456
Posted By Serge
Re: Nokia N810 Frustration

This may come as a surprise for you, but it is really hard to find any applications that are not bug-infested (be it commercial or free software). Of course exceptions exist for the areas where bugs...
Forum: General 2008-11-16, 16:06
Replies: 11
Views: 10,377
Posted By Serge
Re: mplayer: aspect ratio or zoom for the N8x0, -vo nokia770

I think a much better idea is to report this problem to the maintainer(s) of the screen rotation patches. They need to verify if Xv extension works correctly (this can be done with some simple test...
Showing results 1 to 25 of 94


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