nanogui: Thread: Is nano-X appropriate for this application?

Hello,

I just discoverd nano-X...

I have to make an application on an ARM9 where the user must see the output of a webcam. Is nano-X able to display the output of a webcam? Hence, do you think it is the right X-server for me? If not, which one do you suggest me?

Here are some details:

the computer is a microcontroler running an ARM9 with several I/Os (serial, ethernet, 2xUSB, CAN) with shared vga video. The memory is a flash chip of 32Mb and 32Mb of RAM. The Linux runing on this card is a 
2.6.15 kernel compiled by the manufacturer.

Thanks a lot for any comment or help

raph


 		
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I think you don't need any GUIs, just directly output frames from webcam to the framebuffer of linux kernel. Nano-X also likes many GUIs on Embedded linux system which output images to framebuffer. So, I think GUIs don't have any help for your webcam unless you really need a GUI for interaction with User. FYR!

Alex

----- Original Message ----- 
From: "Raph HP" ####@####.####
To: ####@####.####
Sent: Monday, October 02, 2006 11:29 PM
Subject: [nanogui] Is nano-X appropriate for this application?


> Hello,
> 
> I just discoverd nano-X...
> 
> I have to make an application on an ARM9 where the user must see the output of a webcam. Is nano-X able to display the output of a webcam? Hence, do you think it is the right X-server for me? If not, which one do you suggest me?
> 
> Here are some details:
> 
> the computer is a microcontroler running an ARM9 with several I/Os (serial, ethernet, 2xUSB, CAN) with shared vga video. The memory is a flash chip of 32Mb and 32Mb of RAM. The Linux runing on this card is a 
> 2.6.15 kernel compiled by the manufacturer.
> 
> Thanks a lot for any comment or help
> 
> raph
> 
> 
>  
> ---------------------------------
> Découvrez un nouveau moyen de poser toutes vos questions quelque soit le sujet ! Yahoo! Questions/Réponses pour partager vos connaissances, vos opinions et vos expériences. Cliquez ici.

For speed, I agree with Alex.  Also, nano-X has a function,
GrOpenClientFramebuffer(), which when used with
GrGetWindowFBInfo(), will return the hardware
framebuffer address of the window's upper left
corner.  In this way, you get the speed of direct access,
with the benefits of the other aspects of nano-X,
including window frames, etc.

Regards,

Greg

: I think you don't need any GUIs, just directly output frames from webcam
to the framebuffer of linux kernel. Nano-X also likes many GUIs on Embedded
linux system which output images to framebuffer. So, I think GUIs don't have
any help for your webcam unless you really need a GUI for interaction with
User. FYR!
:
: Alex
:
: ----- Original Message ----- 
: From: "Raph HP" ####@####.####
: To: ####@####.####
: Sent: Monday, October 02, 2006 11:29 PM
: Subject: [nanogui] Is nano-X appropriate for this application?
:
:
: > Hello,
: >
: > I just discoverd nano-X...
: >
: > I have to make an application on an ARM9 where the user must see the
output of a webcam. Is nano-X able to display the output of a webcam? Hence,
do you think it is the right X-server for me? If not, which one do you
suggest me?
: >
: > Here are some details:
: >
: > the computer is a microcontroler running an ARM9 with several I/Os
(serial, ethernet, 2xUSB, CAN) with shared vga video. The memory is a flash
chip of 32Mb and 32Mb of RAM. The Linux runing on this card is a
: > 2.6.15 kernel compiled by the manufacturer.
: >
: > Thanks a lot for any comment or help
: >
: > raph
: >
: >
: >
: > ---------------------------------
: > Découvrez un nouveau moyen de poser toutes vos questions quelque soit le
sujet ! Yahoo! Questions/Réponses pour partager vos connaissances, vos
opinions et vos expériences. Cliquez ici.

Hi,

I suggest you study V4L2, search it on Google, then you would find more information about how to use a webcam.

Alex
  ----- Original Message ----- 
  From: Raph HP 
  To: Greg Haerr ; celeber2 
  Sent: Thursday, October 05, 2006 8:04 PM
  Subject: RE : Re: [nanogui] Is nano-X appropriate for this application?


  Hello,

  Thanks for your help. I will look at this, but I have to admit that I have no idea how to get the images from the webcam and how to display them...

  Would you mind to give me a hint where I should look?

  Thanks

  raph

  Greg Haerr ####@####.#### a écrit :
    For speed, I agree with Alex. Also, nano-X has a function,
    GrOpenClientFramebuffer(), which when used with
    GrGetWindowFBInfo(), will return the hardware
    framebuffer address of the window's upper left
    corner. In this way, you get the speed of direct access,
    with the benefits of the other aspects of nano-X,
    including window frames, etc.

    Regards,

    Greg

    : I think you don't need any GUIs, just directly output frames from webcam
    to the framebuffer of linux kernel. Nano-X also likes many GUIs on Embedded
    linux system which output images to framebuffer. So, I think GUIs don't have
    any help for your webcam unless you really need a GUI for interaction with
    User. FYR!
    :
    : Alex
    :
    : ----- Original Message ----- 
    : From: "Raph HP" 
    : To: 
    : Sent: Monday, October 02, 2006 11:29 PM
    : Subject: [nanogui] Is nano-X appropriate for this application?
    :
    :
    : > Hello,
    : >
    : > I just discoverd nano-X...
    : >
    : > I have to make an application on an ARM9 where the user must see the
    output of a webcam. Is nano-X able to display the output of a webcam? Hence,
    do you think it is the right X-server for me? If not, which one do you
    suggest me?
    : >
    : > Here are some details:
    : >
    : > the computer is a microcontroler running an ARM9 with several I/Os
    (serial, ethernet, 2xUSB, CAN) with shared vga video. The memory is a flash
    chip of 32Mb and 32Mb of RAM. The Linux runing on this card is a
    : > 2.6.15 kernel compiled by the manufacturer.
    : >
    : > Thanks a lot for any comment or help
    : >
    : > raph
    : >
    : >
    : >
    : > ---------------------------------
    : > Découvrez un nouveau moyen de poser toutes vos questions quelque soit le
    sujet ! Yahoo! Questions/Réponses pour partager vos connaissances, vos
    opinions et vos expériences. Cliquez ici.


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Hi,

I suggest you study V4L2, search it on Google, then you would find more information about how to use a webcam.

Alex
  ----- Original Message ----- 
  From: Raph HP 
  To: Greg Haerr ; celeber2 
  Sent: Thursday, October 05, 2006 8:04 PM
  Subject: RE : Re: [nanogui] Is nano-X appropriate for this application?


  Hello,

  Thanks for your help. I will look at this, but I have to admit that I have no idea how to get the images from the webcam and how to display them...

  Would you mind to give me a hint where I should look?

  Thanks

  raph

  Greg Haerr ####@####.#### a écrit : 
    For speed, I agree with Alex. Also, nano-X has a function,
    GrOpenClientFramebuffer(), which when used with
    GrGetWindowFBInfo(), will return the hardware
    framebuffer address of the window's upper left
    corner. In this way, you get the speed of direct access,
    with the benefits of the other aspects of nano-X,
    including window frames, etc.

    Regards,

    Greg

    : I think you don't need any GUIs, just directly output frames from webcam
    to the framebuffer of linux kernel. Nano-X also likes many GUIs on Embedded
    linux system which output images to framebuffer. So, I think GUIs don't have
    any help for your webcam unless you really need a GUI for interaction with
    User. FYR!
    :
    : Alex
    :
    : ----- Original Message ----- 
    : From: "Raph HP" 
    : To: 
    : Sent: Monday, October 02, 2006 11:29 PM
    : Subject: [nanogui] Is nano-X appropriate for this application?
    :
    :
    : > Hello,
    : >
    : > I just discoverd nano-X...
    : >
    : > I have to make an application on an ARM9 where the user must see the
    output of a webcam. Is nano-X able to display the output of a webcam? Hence,
    do you think it is the right X-server for me? If not, which one do you
    suggest me?
    : >
    : > Here are some details:
    : >
    : > the computer is a microcontroler running an ARM9 with several I/Os
    (serial, ethernet, 2xUSB, CAN) with shared vga video. The memory is a flash
    chip of 32Mb and 32Mb of RAM. The Linux runing on this card is a
    : > 2.6.15 kernel compiled by the manufacturer.
    : >
    : > Thanks a lot for any comment or help
    : >
    : > raph
    : >
    : >
    : >
    : > ---------------------------------
    : > Découvrez un nouveau moyen de poser toutes vos questions quelque soit le
    sujet ! Yahoo! Questions/Réponses pour partager vos connaissances, vos
    opinions et vos expériences. Cliquez ici.


    ---------------------------------------------------------------------
    To unsubscribe, e-mail: ####@####.####
    For additional commands, e-mail: ####@####.####






------------------------------------------------------------------------------
  Nouveau : téléphonez moins cher avec Yahoo! Messenger. Appelez le monde entier à partir de 0,012 €/minute ! Téléchargez la version beta.