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H.264 VA-API Support For Intel Clarkdale/Arrandale

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  • phoronix
    started a topic H.264 VA-API Support For Intel Clarkdale/Arrandale

    H.264 VA-API Support For Intel Clarkdale/Arrandale

    Phoronix: H.264 VA-API Support For Intel Clarkdale/Arrandale

    Intel's Zou Nan hai has published a patch for the Intel kernel DRM code that provides multiple ring buffer support for Clarkdale and Arrandale systems, in other words Intel's new IGPs that are embedded onto CPUs such as the new Core i3 530 and its stellar integrated graphics...

    http://www.phoronix.com/vr.php?view=ODEwNg

  • curaga
    replied
    Well to me it looks just like a plain business decision. If takes X months per chip family, I would do it first on the latest as well.
    More sales if you can tick "H.264 acceleration on linux"

    Leave a comment:


  • darkbasic
    replied
    I don't know, there are even no laptops with the newer chips, only powerful desktops which do not need h.264 acceleration...

    Leave a comment:


  • beecher
    replied
    I wonder why they began to implement this on the newer chips and not on the GM45. I would have thought they were far more people owning the older chips and wanting this feature than the newer chips.

    Leave a comment:


  • darkbasic
    replied
    Originally posted by uwgandalf View Post
    yep, I asked this in the VA mailing list, they said planned for Q2.
    Bad news, G45 support is planned for Q3, not Q2

    Leave a comment:


  • mcwho
    replied
    Little More Detail Please

    I am new to getting things up and running on this new Gateway NV7915u laptop. I came across this post to get Ubuntu installed. It works but I think I have some stability issues when running Firefox. I chose to run 2.6.33. I am interested in using this feature but am a little unsure of how to get it installed. Can someone provide a little more detail on how to apply the patch. Thanks.

    Leave a comment:


  • bridgman
    replied
    Originally posted by djiezes View Post
    As far as I gathered Ubuntu 10.04 - end of april - will use the 2.6.32 kernel. While the intel graphics support is only from 2.6.33 onwards? Same for this va-api?
    AFAIK the Ubuntu 10.04 release is using 2.6.32 kernel but with the drm (graphics kernel driver) from 2.6.33, so from a graphics POV you can pretty much think of it as being 2.6.33.

    Leave a comment:


  • brent
    replied
    Originally posted by garytr24 View Post
    isn't it possible to get hardware assistance for decoding on g33 with gallium and the shader pipeline?
    Intel's IGPs aren't known for good shader performance. I doubt it's possible at all.

    Also, the kind of acceleration you get this way (that is, MC level) is not very useful, especially with H.264 high profile, where acceleration is most needed.
    H.264 data in high profile is normally encoded with CABAC. CABAC decoding needs a lot of processing power and cannot be parallelized well, thus it isn't viable for offload to shaders. If you approach high bitrates (like on bluray), if I remember correctly, CABAC usually becomes the most involving decoding step. And you can't speed it up with MC acceleration at all.

    Plain and simple, in my opinion, only full (i.e. bitstream/VLD level) acceleration is worth implementing when it comes to H.264.

    VC-1 is different, but it's not nearly as hard to decode as H.264 anyway.

    Leave a comment:


  • garytr24
    replied
    gallium for old chips?

    isn't it possible to get hardware assistance for decoding on g33 with gallium and the shader pipeline?

    Leave a comment:


  • curaga
    replied
    U 10.10 might have it, yes.

    As Michael found out, the igp in i3 does work in 10.04, he had some crashes though. It should be better when it's released.

    Leave a comment:

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