Any advance about this thread?
I've tried to change height parameter from 480 (NTSC) to 576 (PAL) in
main.cbut it doesn't work.
I think the problem is in this part of capture.c:
/* Auto detect PAL or NTSC using the capture driver
as sanity check */
std = VPFE_STD_AUTO;
if(ioctl(fd, VIDIOC_S_STD, &std) == -1) {
ERR("VIDIOC_S_STD (auto) failed on %s
(%s)\n", V4L2_DEVICE,
strerror(errno));
return FAILURE;
}
I don't know where check if VPFE_STD_AUTO is work in proper way.
Regards.
2008/3/27, Jammy Dane <[EMAIL PROTECTED]>:
>
> 1 to huahua5:
> Can you give me the detail of "modify the framebuffer driver to support
> run-time switch between NTSC and PAL."?
>
> 2 to all
> i have tried to modify the bootargs following by what Karicheri said but
> it did not work? what's wrong?
>
>
> ----- Original Message -----
> *From:* huahua5 <[EMAIL PROTECTED]>
> *To:* Karicheri, Muralidharan <[EMAIL PROTECTED]> ; Karicheri,
> Muralidharan <[EMAIL PROTECTED]> ; Jammy Dane <[EMAIL PROTECTED]>; Diego
> Dompe <[EMAIL PROTECTED]>
> *Cc:* [EMAIL PROTECTED]
> *Sent:* Thursday, March 27, 2008 10:17 AM
> *Subject:* Re: RE: PAL and NTSC problem on dm355
>
> you can resolve this problem as followed:
>
> 1,DM355 board has a switch used for PAL & NTSC option.u-boot will check
> the switch and transfer it to framebuffer driver.it is ugly.
> 2,modify the framebuffer driver to support run-time switch between NTSC
> and PAL.
>
> I have try 2,but when I switch from NTSC to PAL,it will make the dsplinkk
> module oops.switch from PAL to NTSC is ok.anyone has comments?
>
> in a word, the display mode depend on the camera mode,and only the display
> mode can be changed by software,the camera mode is decided by your hardware.
>
> ------------------------------
> huahua5
> 2008-03-27
> ------------------------------
> *发件人：* Karicheri, Muralidharan
> *发送时间：* 2008-03-27 03:27:23
> *收件人：* Karicheri, Muralidharan; Jammy Dane; Diego Dompe
> *抄送：* davinci-linux-open-source@linux.davincidsp.com
> *主题：* RE: PAL and NTSC problem on dm355
>
>
> I missed one information. Did you set the bootargs correctly ? The jumper
> setting is read by the bootloader and is updated in the videostd environment
> variable. Now for the driver to use this variable, bootargs need to have the
> following settings.
>
>
>
> video=dm355fb:output=\$(videostd)
>
>
>
> Now based on Jumper settings, following will be passed to kernel (and to
> driver)
>
>
>
> video=dm355fb:output=pal or video=dm355fb:output=ntsc depending on the
> jumper settings
>
>
>
>
> ------------------------------
>
> *From:* [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] *On Behalf Of *Karicheri,
> Muralidharan
> *Sent:* Wednesday, March 26, 2008 12:56 PM
> *To:* Jammy Dane; Diego Dompe
> *Cc:* davinci-linux-open-source@linux.davincidsp.com
> *Subject:* RE: PAL and NTSC problem on dm355
>
>
>
> It means, the linux driver is detecting it as PAL, but application is
> trying to select a NTSC camera. Check the demo code to see why it is
> selecting a NTSC camera and fix it.
>
>
> ------------------------------
>
> *From:* Jammy Dane [mailto:[EMAIL PROTECTED]
> *Sent:* Wednesday, March 26, 2008 12:02 PM
> *To:* Diego Dompe; Karicheri, Muralidharan
> *Cc:* davinci-linux-open-source@linux.davincidsp.com
> *Subject:* Re: PAL and NTSC problem on dm355
>
>
>
> Hi,
>
>
>
> what problem i mentioned is that when i connect the pal camera to the evm
> and run the encode or encodedecode demo supplied by the DVSDK, it said:
>
>
>
> PAL camera connect but NTSC camera selected.
>
>
>
> it did not work though i have set the J1 to select the pal camera.
>
>
>
> what 's wrong with it ?
>
>
>
> can you say more?
>
>
>
> Regards
>
>
>
> Jammy
>
> ----- Original Message -----
>
> *From:* Karicheri, Muralidharan <[EMAIL PROTECTED]>
>
> *To:* Diego Dompe <[EMAIL PROTECTED]> ; Jammy Dane<[EMAIL PROTECTED]>
>
> *Cc:* davinci-linux-open-source@linux.davincidsp.com
>
> *Sent:* Wednesday, March 26, 2008 9:24 PM
>
> *Subject:* RE: PAL and NTSC problem on dm355
>
>
>
> Hi,
>
> TVP5146 has autodetect feature. To turn it on, you need to invoke a S_STD
> ioctl to the V4L2 capture driver (choose TVP5146 as the capture driver in
> bootargs) which will detect PAL standard if you feed a PAL source output to
> the composite/S-video input of the tvp. Hope this helps.
>
>
>
> Murali
>
>
>
>
>
> *From:*
> [EMAIL PROTECTED]:
> [EMAIL PROTECTED]
> *On Behalf Of *Diego Dompe
> *Sent:* Wednesday, March 26, 2008 8:36 AM
> *To:* Jammy Dane
> *Cc:* davinci-linux-open-source@linux.davincidsp.com
> *Subject:* Re: PAL and NTSC problem on dm355
>
>
>
> Hi,
>
>
>
> The framebuffer driver should support PAL output (but I don't have
> hardware to verify it). Could you elaborate on the problem you have?
>
>
>
> Do you mean programming the video capture driver to capture on PAL? The
> video capture driver works over raw YUV data received on digital format from
> the video codec used on the DM355 EVM (TVP5146), so its the TVP how
> is responsible to encode from PAL signal, so is probably a matter of
> performing an ioctl over the video driver to ask the driver to signal the
> CODEC the PAL format over the i2c.
>
>
>
> Let me know if this is what you are looking for, I'm not at my desktop
> right now so I can't grep on the files.
>
>
>
> Diego Dompe
>
> RidgeRun Engineering
>
>
>
> On Mar 26, 2008, at 6:12 AM, Jammy Dane wrote:
>
>
>
> Hi,all
>
>
>
> I am developing the dm355 evm, and as u knows, the dm355 evm does not
> support pal camera, how should we do for supporting the pal standard.
>
>
>
> can u give me some advice?
>
>
>
> thanks
>
>
>
> Jammy Dane
>
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>
>
>
>
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>
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