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dm355 question

laibaotang
Intellectual 400 points

dear you

     How to use /opt/mv_pro_4.0.1/montavista/pro/devkit/lsp/ti-davinci kernel filesys in order to store and play video in the append two usbhdd which through hub port?

how to change  in the u-boot and kernerl and usb driver in order to achieve  video and audio monitoring  kinescope to store in the hdd?

how to make video and audio  play synchronizely?

    I hope experts can supply some advice to me

                                        Nov 24,2008

tanglaibao

  • TI__Mastermind 37340 points

    If I understand correctly, you want to use DM355 as a USB Host and plug a USB drive where you can store audio and video.  If his is true you may find the following App Note helpful

    http://focus.ti.com/lit/an/spraap8/spraap8.pdf

    It was written for DM6446 but should mostly apply to DM355 as well.  Disregard comments about J7 jumpers (only applicable to DM6446 EVM).  You may also want to take a look at the DM355 EVM Technical Reference Guide (http://c6000.spectrumdigital.com/evmdm355/revd/files/EVMDM355_TechRef_RevD.pdf) to make sure your EVM is configured correctly with regards to USB-related Jumpers(I believe it is by default).

    There is no built-in hardware for Audio/Video synchronization, you will either have to design your own hardware or implement this in software.  Open source Applications such as GStreamer synchronize Audio and Video in software; we have ported GStreamer to DM355 in the past, but we are currently working on a more robust port of GStreamer hence if you could wait for the new port (estimating 1Q09), that would be best.  Although if you are just interested in the A/V synch aspect, you can probrably download the current Gstreamer port (http://wiki.davincidsp.com/index.php?title=DM3xx_Gstreamer_Solution ) and just use it as reference code.