Thanks a lot Anand and Jaya. All this information will be really very helpful.
Regards, Abhishek On Thu, Apr 23, 2009 at 10:18 PM, Balagopalakrishnan, Anand <ana...@ti.com>wrote: > Abhishek, > > > > The link provided by Jayakrishnan is a good starting point. In addition, TI > has a whole set of FAQs and usage notes for DVSDK available at: > > http://tiexpressdsp.com/index.php?title=Main_Page > > > > IMHO, the following should be your approach: > > > > 1. Decide whether the video processing algorithm will be implemented on > ARM or DSP. If it involves a lot of signal processing, the answer is clear. > The best option would be to use DSP. You can find a few notes on developing > codecs at: > > http://tiexpressdsp.com/index.php?title=Category:Codecs > > > > 1. Develop the codec on DSP using CCS, verify functionality and fine > tune and optimize for performance. You can refer to the following for CCS: > > http://tiexpressdsp.com/index.php?title=Category:CCS > > > > 1. Ensure that the codec is xDAIS and xDM compliant. The xDAIS is an > algorithm standard followed by all codecs on TI platforms. It has a defined > interface for resource request, algorithm instantiation, actual processing > and cleanup. xDM is an extension of xDAIS that caters to Multimedia Codecs. > These standards ensure that the codec adhering to the standard can be > easily > plugged into any application using standard frameworks. Topics on xDAIS are > at: > > http://tiexpressdsp.com/index.php?title=Category:XDAIS > > http://wiki.davincidsp.com/index.php?title=XDM_FAQ > > > > 1. When the algorithm is robust, we need a framework to control it. > Someone needs to allocate memory, grant DMA channels, take care of ARM-DSP > message transfers, power off/on DSP when required, etc. TI’s DVSDK (Digital > Video Software Development Kit) provides a framework for exactly this > purpose. The Codec Engine framework handles all the internal details and > leaves the application writer to worry about only the application control > logic. An overview of DVSDK and details on Codec Engine here: > > http://tiexpressdsp.com/index.php?title=DVEVM_and_DVSDK_overview > > http://tiexpressdsp.com/index.php?title=Category:DVSDK > > http://tiexpressdsp.com/index.php?title=Category:Codec_Engine > > > http://wiki.davincidsp.com/index.php?title=RTSC_Codec_And_Server_Package_Wizards > > > > 1. When the codec gets integrated with the framework, the result is a > DSP image which can be loaded on the DSP. This is called as a codec > server/codec combo: > > > http://wiki.davincidsp.com/index.php?title=RTSC_Codec_And_Server_Package_Wizards > > > > 1. You would still need an ARM application to call the codec on DSP and > control it. The Digital Video Test Bench provides this functionality and > enables easy plug-n-play of codecs: > > > http://wiki.davincidsp.com/index.php?title=I_just_want_my_video_codec_to_work_with_the_DVSDK > > > > This page provides a wholistic view of what’s involved in getting a video > codec to be called from ARM application: > > > http://wiki.davincidsp.com/index.php?title=I_just_want_my_video_codec_to_work_with_the_DVSDK > > > > Best Regards, > > Anand Balagopalakrishnan > > Texas Instruments > > India > > > ------------------------------ > > *From:* davinci-linux-open-source-boun...@linux.davincidsp.com [mailto: > davinci-linux-open-source-boun...@linux.davincidsp.com] *On Behalf Of *Jaya > krishnan > *Sent:* Friday, April 24, 2009 6:34 AM > *To:* Abhishek Botadra; davinci-linux-open-source@linux.davincidsp.com > *Subject:* Re: Real-time video processing on DM6467 EVM > > > > Abhishek, > > You don't need to connect two hosts to the DVEVM. You develop the > algorithm in CCS, debug,optimize, make it xDM compliant and produce a > library file. The rest of the development work is done on Linux host. > > Pls go through an earlier post > http://www.mail-archive.com/davinci-linux-open-source@linux.davincidsp.com/msg01049.html > > You may also go through several TI documents such as Algorithm creator > user's guide, > > Server Integartor user's guide and Algorithm development user's guide. > > > > Regards > > Jayakrishnan > > > > > > > > > > > > > > ------- *Original Message* ------- > *Sender* : Abhishek Botadra<abhibota...@gmail.com> > *Date* : Apr 24, 2009 07:58 (GMT+09:00) > *Title* : Real-time video processing on DM6467 EVM > > Hi, > > I need some help in figuring out how to implement a video-processing > algorithm on ARM+DSP system. > > From various sources, I am able to understand that first I need to develop > the code on DSP because real-time execution can be achieved only on DSP > (using code composer studio). I need to work on Windows host for this work. > Then, I need to package up the code, i.e. write C/C++ wrappers so that it > can be loaded and executed from ARM running linux. Again, this development > work needs to be done on Linux host. So, in the end I will need to connect > both the hosts to the EVM, windows host through JTAG emulator and serial > port and Linux host through Ethernet. > > Also, there are no reference frameworks available for DaVinci Processors. > > So, I was wondering if you guys can let me know if this would be the best > approach in implementing the video processing algorithm on DM 6467 EVM. Or, > is there any other better way I should opt for. > > Thanks for the help. > > Regards, > > -- > Abhishek > > > > > size=2 width=410 style='width:307.5pt' align=left> > > > > Jayakrishnan M M > Research Engineer > Development Team > Digital Imaging Division > *SAMSUNG TECHWIN CO.,LTD* > > TEL +82-31-740-8677 > FAX +82-31-740-8750 > > Mobile +82-10-6409-3619 > E-mail:*jaya.krishn...@samsung.com <jungsoo66.c...@samsung.com> > > > ------------------------------ > > > > > > > -- Abhishek
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