Hello Murali, DM6467 supports NV16 video format, where image is stored in two buffers. First buffer contains luma data and second buffer contains cb and cr interleaved data. It does not support completele YUV422 interleaved data.
You are right, chroma buffer pointer could also be an problem. Display driver always expects chroma data at the half of the buffer size. Thanks, Brijesh Jadav ________________________________________ From: Karicheri, Muralidharan Sent: Friday, July 31, 2009 10:34 AM To: Jadav, Brijesh R; Vinayagam Mariappan Cc: Davinci-linux-open-source@linux.davincidsp.com Subject: RE: saDisplay + DM6467 showing black an white image in SD Display Brijesh, DM6467 display accept YUV422 planar. The format is YUV422 => [YYYYYYYYYYYYYYYY][UUUUU][VVVVV]. as given by Vinayagam. If you are seeing black and white image, it is probably because your cbcr offer is not correct. The display driver in expects cbcr offset at half kernel buffer size (MMAP) and half of sizeimage for UserPTR. I have been working to port the code to GIT and this is what I have understood. Murali Karicheri Software Design Engineer Texas Instruments Inc. Germantown, MD 20874 Phone : 301-515-3736 email: m-kariche...@ti.com ________________________________ From: davinci-linux-open-source-bounces+m-karicheri2=ti....@linux.davincidsp.com [mailto:davinci-linux-open-source-bounces+m-karicheri2=ti....@linux.davincidsp.com] On Behalf Of Jadav, Brijesh R Sent: Friday, July 31, 2009 8:42 AM To: Vinayagam Mariappan Cc: Davinci-linux-open-source@linux.davincidsp.com Subject: RE: saDisplay + DM6467 showing black an white image in SD Display Hi, DM6467 display module accepts data in the YUV422 semi-planar format. It is as shown below YUV422 => [YYYYYYYYYYYYYYYY][UVUVUVUVUV]. Probably, this is reason why you are not getting correct color information. Thanks,, Brijesh Jadav ________________________________ From: Vinayagam Mariappan [mailto:vinayagamenm...@gmail.com] Sent: Friday, July 31, 2009 6:08 PM To: Jadav, Brijesh R Cc: Davinci-linux-open-source@linux.davincidsp.com Subject: Re: saDisplay + DM6467 showing black an white image in SD Display Hi, YUV422 => [YYYYYYYYYYYYYYYY][UUUUU][VVVVV]. How about YUV420....I have my own MPEG-4 Decoder which gives out YUV420 with D1 resolution. I am using TI Sample Application to Interface with our own MPEG-4 Decoder Server. I get my YUV data to application but I am not able to display it. Where do I making mistake? Regards, Vinayagam M On Fri, Jul 31, 2009 at 9:31 PM, Jadav, Brijesh R <brijes...@ti.com<mailto:brijes...@ti.com>> wrote: Hi, What is the format of your YUV422 file? DM6467 supports only YUV422 Semi-Planar format. Thanks, Brijesh Jadav ________________________________ From: Vinayagam Mariappan [mailto:vinayagamenm...@gmail.com<mailto:vinayagamenm...@gmail.com>] Sent: Friday, July 31, 2009 5:57 PM To: Jadav, Brijesh R Cc: Davinci-linux-open-source@linux.davincidsp.com<mailto:Davinci-linux-open-source@linux.davincidsp.com> Subject: Re: saDisplay + DM6467 showing black an white image in SD Display Hi, Yes, I know... But I have modified to play with YUV422 sample. I get only Luma not chroma.... I am just fulling the buffer with YUV422 Data. Regards, Vinayagam M On Fri, Jul 31, 2009 at 9:19 PM, Jadav, Brijesh R <brijes...@ti.com<mailto:brijes...@ti.com>> wrote: Hi, As far as I remember, this application does not work the sample image. Application actually generates color bar and displays it. Thanks, Brijesh Jadav ________________________________ From: davinci-linux-open-source-boun...@linux.davincidsp.com<mailto:davinci-linux-open-source-boun...@linux.davincidsp.com> [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com<mailto:davinci-linux-open-source-boun...@linux.davincidsp.com>] On Behalf Of kirthika varadarajan Sent: Friday, July 31, 2009 3:28 PM To: Davinci-linux-open-source@linux.davincidsp.com<mailto:Davinci-linux-open-source@linux.davincidsp.com> Subject: saDisplay + DM6467 showing black an white image in SD Display We tried displaying yuv4::2:2(740x480) image in SD display using saDisplay(application sample ibn PSP), But we are getting black and white image even if we input color image. We tried the sample file given in PSP. But black. we are curious to know how to get the color SD display. _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com<mailto:Davinci-linux-open-source@linux.davincidsp.com> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source -- Regards, Vinayagam M VeNMSOL Technologies, #7A, First Cross Street, Ganapathy Colony, Ekkaduthangal, Chennai - 600 032,India. Tel:+91-44-4353 0168;Mobile:+91-9445-019919 URL: www.venmsol.com<http://www.venmsol.com> "We make a living by what we get, we make a life by what we give...- Unknown " -- Regards, Vinayagam M VeNMSOL Technologies, #7A, First Cross Street, Ganapathy Colony, Ekkaduthangal, Chennai - 600 032,India. Tel:+91-44-4353 0168;Mobile:+91-9445-019919 URL: www.venmsol.com<http://www.venmsol.com> "We make a living by what we get, we make a life by what we give...- Unknown " _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
