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by dom
Fri Feb 03, 2012 1:07 pm
Forum: General discussion
Topic: ARM-side privileged closed-source Broadcom libraries?
Replies: 62
Views: 7343

Re: ARM-side privileged closed-source Broadcom libraries?

Actually a colleague had built a hardfloat ABI gcc toolchain. CMake seems to build something. Looks plausible - I'll investigate more closely tonight.
by dom
Fri Feb 03, 2012 11:47 am
Forum: General discussion
Topic: ARM-side privileged closed-source Broadcom libraries?
Replies: 62
Views: 7343

Re: ARM-side privileged closed-source Broadcom libraries?

<r>Out cmake build system fails with -mfloat-abi=hard:<br/> <br/> <URL url="http://pastebin.com/zZRML4wF">http://pastebin.com/zZRML4wF</URL><br/> <br/> Our compiler doesn't have c runtime libs built with hardfloat abi - I guess that's the problem.<br/> <br/> Did you build a gcc/libs with hardfloat a...
by dom
Fri Feb 03, 2012 10:22 am
Forum: General discussion
Topic: Can i use raspberry pi mainly for web browsing?
Replies: 62
Views: 20896

Re: Can i use raspberry pi mainly for web browsing?

You can install Iceweasel from Debian. It"s a bit of a resource hog and is slower then Midori, but it works.
by dom
Fri Feb 03, 2012 2:05 am
Forum: General discussion
Topic: ARM-side privileged closed-source Broadcom libraries?
Replies: 62
Views: 7343

Re: ARM-side privileged closed-source Broadcom libraries?

So, @dom, is that enough for you to begin work?

Looks promising. I"ll have a go at building the libs with your flags.
by dom
Wed Feb 01, 2012 9:43 pm
Forum: General discussion
Topic: New blog post from JamesH on the main page
Replies: 56
Views: 7969

Re: New blog post from JamesH on the main page

You can work out the cost of each audio/video codec here:

http://www.streamcrest.com/Lic.....ator9.html
by dom
Wed Feb 01, 2012 8:09 pm
Forum: Other projects
Topic: Programatically lock SD Card to hardware unit?
Replies: 28
Views: 5155

Re: Programatically lock SD Card to hardware unit?

HansH said:


I would be interesting to know how I can get my Pi's serialnumber from it...

Perhaps I will get  no 11



cat /proc/cpuinfo

11 has gone...
by dom
Wed Feb 01, 2012 7:37 pm
Forum: General discussion
Topic: ARM-side privileged closed-source Broadcom libraries?
Replies: 62
Views: 7343

Re: ARM-side privileged closed-source Broadcom libraries?

<t>Chromatix said: <br/> <br/> <br/> May I ask whether the userspace libraries will come in a hardfloat ABI version?  That seems to be the main barrier to making the entire system hardfloat, which is by far the most efficient way to run an ARM with VFP.<br/> <br/> <br/> <br/> It should be possible t...
by dom
Wed Feb 01, 2012 9:52 am
Forum: General discussion
Topic: ARM-side privileged closed-source Broadcom libraries?
Replies: 62
Views: 7343

Re: ARM-side privileged closed-source Broadcom libraries?

User space libraries can only communicate with the GPU through the (vchiq) kernel driver.
by dom
Tue Jan 31, 2012 11:03 pm
Forum: General discussion
Topic: New blog post from JamesH on the main page
Replies: 56
Views: 7969

Re: New blog post from JamesH on the main page

<t>All codecs running on the GPU require significant software (even the hardware accelerated ones).<br/> We typically implement codecs as dlls (they have a .vll extension), so they can be loaded and unloaded as required. They live on the ARM file system, and we use a file daemon (vcfiled) to provide...
by dom
Tue Jan 31, 2012 8:20 pm
Forum: General discussion
Topic: New blog post from JamesH on the main page
Replies: 56
Views: 7969

Re: New blog post from JamesH on the main page

mp3 requires licensing (and is more expensive than h264), so no GPU decode.
But audio is easy enough for ARM to decode, so shouldn"t be a problem.
by dom
Tue Jan 31, 2012 8:00 pm
Forum: General discussion
Topic: Kernel Patches
Replies: 13
Views: 1915

Re: Kernel Patches

We"d love our kernel patches to be upstreamed.
None of us have experience in this, so we"re looking for community help.
by dom
Tue Jan 31, 2012 7:17 pm
Forum: General discussion
Topic: New blog post from JamesH on the main page
Replies: 56
Views: 7969

Re: New blog post from JamesH on the main page

<t>Liz could you correct the blog post?<br/> <br/> "There are non-licensed Codecs such at VP8, Xvid etc, but for the moment they will not be accelerated by the GPU."<br/> <br/> These are bad examples. Firstly VP8 is license free. Xvid is not a codec, but an implmentation of mpeg4 part2, and we suppo...
by dom
Tue Jan 31, 2012 6:23 pm
Forum: General discussion
Topic: New blog post from JamesH on the main page
Replies: 56
Views: 7969

Re: New blog post from JamesH on the main page

From wikipedia

Xvid (formerly "XviD") is a video codec library following the MPEG-4 standard, specifically MPEG-4 Part 2 Advanced Simple Profile (ASP).

Similarly for DivX.

These follow the mpeg4 standard and our mpeg4 decoder will play these happily.
by dom
Mon Jan 30, 2012 11:51 pm
Forum: General discussion
Topic: Cases and static
Replies: 11
Views: 2283

Re: Cases and static

<r>This was the cable (in fact I bought two – they were only 99p when I bought them):<br/> <br/> <URL url="http://www.ebay.co.uk/itm/ws/e.....0744534601">http://www.ebay.co.uk/itm/ws/e.....0744534601</URL><br/> <br/> Resistance of 5ohms. 5V in one end. Less than 4V out the other. R-Pi not very stabl...
by dom
Mon Jan 30, 2012 8:34 pm
Forum: General discussion
Topic: Cases and static
Replies: 11
Views: 2283

Re: Cases and static

I wouldn't be too concerned about static. I've been manhandling boards like this for years - without a wriststrap, and have never known a board to be killed by static.
by dom
Mon Jan 30, 2012 7:05 pm
Forum: General discussion
Topic: OpenGL ES extensions and limits
Replies: 14
Views: 17250

Re: OpenGL ES extensions and limits

<t>./eglinfo<br/> EGL<br/> Vendor: Broadcom<br/> Version: 1.4<br/> Client APIs: OpenGL_ES OpenVG<br/> Extensions: EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_vg_parent_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_lock_surface<br/> OpenGL ES<br/> Vendor...
by dom
Sat Jan 28, 2012 6:34 pm
Forum: General discussion
Topic: FPU flags test
Replies: 2
Views: 1484

Re: FPU flags test

<t>You are completely correct.<br/> <br/> All debian packages (including C runtime) are build with software floating point. This is very slow on software that heavily uses floating point.<br/> <br/> We have produced replacement debian C runtime libraries that are built with -mfpu=vfp. They do make s...
by dom
Fri Jan 27, 2012 6:51 pm
Forum: General discussion
Topic: Remote desktop application and use
Replies: 13
Views: 4059

Re: Remote desktop application and use

I've installed a remote desktop client on Raspberry Pi and connected to my Windows 7 PC. Seemed pretty usable.
by dom
Fri Jan 27, 2012 6:47 pm
Forum: General discussion
Topic: HDMI CEC and XBMC
Replies: 98
Views: 175953

Re: HDMI CEC and XBMC

Cool. We're quite keen to support libCEC and have bought a couple their dongles to evaluate. If they are keen too, then I guess it will happen.

For a Raspberry Pi CEC demo:



(not using libCEC)
by dom
Fri Jan 27, 2012 12:16 am
Forum: General discussion
Topic: Audio via HDMI
Replies: 11
Views: 3577

Re: Audio via HDMI

<t>That player only supports passthrough audio (due to licensing), so will only make a sound through a TV or receiver that can handle DTS or AC3.<br/> <br/> You will need to wait for third party media players (e.g. XBMC and no doubt others) that can decode audio on the ARM, and output it as PCM, whi...
by dom
Thu Jan 26, 2012 12:47 am
Forum: General discussion
Topic: Audio via HDMI
Replies: 11
Views: 3577

Re: Audio via HDMI

<t>What app are you using to output the audio?<br/> There is a demo app (ilplayer) that just supports video + passthrough audio (due to codec licensing issues). That will only output audio if your TV or receiver can decode it.<br/> There will be media players that decode audio on the ARM and output ...
by dom
Sun Jan 15, 2012 4:35 pm
Forum: General discussion
Topic: Raspberry Pi playing 1080p video and AirPlay
Replies: 13
Views: 5659

Re: Raspberry Pi playing 1080p video and AirPlay

<t>mr_molez said: <br/> <br/> <br/> I would be more interested to see videos showing how fast the pi works with the browser and whether at all they have managed to use flash or gnash. basically i would like to see how fast the pi is at doing everyday things.<br/> <br/> <br/> The videos tend to show ...
by dom
Sat Jan 14, 2012 11:25 pm
Forum: General discussion
Topic: Pal or NTSC?
Replies: 4
Views: 4823

Re: Pal or NTSC?

There"s no way of detecting whether the TV supports PAL or NTSC.
Most TVs will display a picture even if you get it wrong.
You can force PAL or NTSC in a "config.txt" file on boot partition.
by dom
Sun Jan 08, 2012 11:56 pm
Forum: General discussion
Topic: Simultaneous HDMI video and 3.5mm audio output?
Replies: 1
Views: 1079

Re: Simultaneous HDMI video and 3.5mm audio output?

HDMI with analogue audio is fine. That will be a common configuration for DVI monitor users.
by dom
Wed Jan 04, 2012 10:40 pm
Forum: General discussion
Topic: Audio and HDMI?
Replies: 9
Views: 3121

Re: Audio and HDMI?

Audio sync is a feature of the media player.

But, sure, the openMAX API we use allows an offset to be specified between audio and video to compensate for the delay in, for example, the receiver.

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