Re: [xine-user] What's Xv ?

[Daniel Caujolle-B. <lo...@cl...>]

Hi,

Hetz Ben Hamo wrote:
> 
> Scott Moser wrote:
> 
> > Hetz,
> >
> >    Thanks for replying to that mail.  I've been quite impressed with Xvideo
> > in my limited experience of it.  Maybe you've had more experience and can
> > answer a few questions:
> 
> Ok,
> 
> >
> >    1.  Does Xvideo need any thing at all from the kernel?  Is it dependent
> >
> > perhaps on having a frame buffer set up correctly?
> 
> No. It doesn't depend on that - the X server however needs an exclusive
> direct access to the card. Thats why when you run X - it runs as a root
> - even if you're not a root user.
> 
> Frame buffer is actually a totally differnt thing
> 
> >    2.  How can you tell if its working (other than by running xine and
> > seeing "using Xvideo") ? I've tried xdpyinfo, and it lists Xvideo, but does
> > that mean its working?
> 
> That means the extension exists. You can take the simple test which you
> can find on libSDL in their configure script to detect whether you have
> Xv support or not.

	You can also use "xvinfo", provided with XFree itself. It will
produce something like that:

X-Video Extension version 2.2
screen #0
  Adaptor #0: "ATI Rage128 Video Overlay"
    number of ports: 1
    port base: 46
    operations supported: PutVideo PutImage 
    supported visuals:
      depth 16, visualID 0x23
      depth 16, visualID 0x24
      depth 16, visualID 0x25
      depth 16, visualID 0x26
    number of attributes: 8
      "XV_COLORKEY" (range 0 to 16777215)
              client settable attribute
              client gettable attribute (current value is 100)
      "XV_BRIGHTNESS" (range -64 to 63)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SATURATION" (range 0 to 31)
              client settable attribute
              client gettable attribute (current value is 20)
      "XV_DOUBLE_BUFFER" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
      "XV_ENCODING" (range 0 to 12)
              client settable attribute
              client gettable attribute (current value is 4)
      "XV_FREQ" (range 0 to -1)
              client settable attribute
              client gettable attribute (current value is 1000)
      "XV_MUTE" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
      "XV_VOLUME" (range 1 to 127)
              client settable attribute
              client gettable attribute (current value is 255)
    number of encodings: 12
      encoding ID #1: "pal-composite"
        size: 768 x 288
        rate: 0.020000
      encoding ID #2: "pal-tuner"
        size: 768 x 288
        rate: 0.020000
      encoding ID #3: "pal-svideo"
        size: 768 x 288
        rate: 0.020000
      encoding ID #4: "ntsc-composite"
        size: 640 x 240
        rate: 0.016683
      encoding ID #5: "ntsc-tuner"
        size: 640 x 240
        rate: 0.016683
      encoding ID #6: "ntsc-svideo"
        size: 640 x 240
        rate: 0.016683
      encoding ID #7: "secam-composite"
        size: 768 x 288
        rate: 0.020000
      encoding ID #8: "secam-tuner"
        size: 768 x 288
        rate: 0.020000
      encoding ID #9: "secam-svideo"
        size: 768 x 288
        rate: 0.020000
      encoding ID #10: "pal_60-composite"
        size: 768 x 288
        rate: 0.020000
      encoding ID #11: "pal_60-tuner"
        size: 768 x 288
        rate: 0.020000
      encoding ID #12: "pal_60-svideo"
        size: 768 x 288
        rate: 0.020000
    maximum XvImage size: 2048 x 2048
    Number of image formats: 4
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)

> 
> >
> >    3.  I've got Xv set up on my ATI Xpert card.  I've got another system
> > with a Matrox Millinium II.  Xvideo is supported  by the MGA driver from
> > Xfree86 4.0.2 , but there is no documentation that I can find that says if
> > it works for Matrox cards other than the G200 and G400.
> 
> All Matrox cards are using the same 2D driver - the MGA driver. Your
> Millenium card supports Xv quite well.
> 
> Regarding the documentation - you'll need to ask the XFree guys about it :)
> 
> >    Sorry, random questions regarding my recent playing with Xvideo.
> >    thanks for anyone with any input
> 
> You're quite welcome :)
> 
> Hetz Ben Hamo
> Hardware Research dept.
> Aduva Inc.
> 
> PS: If this email got messy a bit - then I'm sorry - I'm testing the 0.7
> Mozilla :)
> 
> _______________________________________________
> xine-user mailing list
> xin...@li...
> http://lists.sourceforge.net/lists/listinfo/xine-user

Cheers
-- 
73's de Daniel, F1RMB.

              -=- Daniel Caujolle-Bert -=- lo...@cl... -=-
                        -=- f1...@f1... (AMPR NET) -=-