DaVinci™ Video Processors

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DaVinci™ Video Processors

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V4L2
Related Posts

  • Forum Post: Re: v4l2 display driver test Application

    Markus Hofstaetter
    Hi Ramakrishna, the procedure is basically the same as you posted: open video device open other stuff configure video device (check capabilities, set format etc) request buffers (for example kernel space buffers) query buffers mmap them fill buffers initially queue them initially streamon...
    on Nov 29, 2011

  • Forum Post: Centering displayed video in saLoopBackScale (V4L2) demo

    Jon S.
    When running the saLoopBackScale demo (from examples included with http://software-dl.ti.com/dsps/dsps_public_sw/psp/LinuxPSP/DM814x_04_01/04_01_00_06/index_FDS.html), the scaled video is in the top left of the display, and the rest of the display is gray. I am currently trying to determine how to center...
    on Feb 27, 2012

  • Forum Post: Re: Centering displayed video in saLoopBackScale (V4L2) demo

    Jon S.
    Thank you both for the quick responses! I should have noted that I am indeed running my monitor and DM8148EVM at 720p. HardikShah Following things needs to be taken care to display image in center. 1. Buffer size in capture should be equal to scaled image and not the captured image. 2. Same...
    on Feb 28, 2012

  • Forum Post: Re: add v4l2 driver in 8148 EVM

    jianxun zhan
    Shah, Thanks for your help My steps were: 1.In the Linux boot process , ................................... notify_send_event failed! status = 0xfffffff0 notify_shm_drv_sendevent failed! status = 0xfffffff0 notify_send_event failed! status = 0xfffffff0 notify_shm_drv_sendevent failed...
    on Mar 1, 2012

  • Forum Post: Re: add v4l2 driver in 8148 EVM

    jianxun zhan
    Shah, Thanks for the very quick response. I think i have 512MB board. I change my u-boot argument,but result is same! The bootargs are: bootfile=uImage-dm814x-evm.bin bootargs=console=ttyO0,115200n8 rootwait rw mem=256M earlyprintk notifyk.vpssm3_ sva=0x8DB00000 vram=50M ti814xfb.vram=0:16M...
    on Mar 1, 2012

  • Forum Post: Re: Regarding V4L2 drivers

    RV
    BenM, Can you post your working code for V4L driver here. I am on the same boat and would like to use it as a reference for my code. Thanks RV
    on Mar 5, 2012

  • Forum Post: TI8148 HDVPSS RGB bayer CMOS capture

    Yeng Yu
    Hi All, I am having customized board based on Ti8148 processor, 2 CMOS cameras connected to VIN0 and VIN1 with external HSYNC and VSYNC, PIXCLK, I am following http://processors.wiki.ti.com/index.php/TI81XX_Video_Capture_Driver_User_Guide release note and have following Software version, DM814x...
    on Mar 13, 2012

  • Forum Post: EZSDK 5.03 v4l2

    Alla
    Hello, I use DM816x with EZSDK 5.03. During the booting, the load-hd-v4l2-firmware.sh script is executed and I get the following errors: tvp7002 1-005c: TVP7002 read error -121 ti81xxvin ti81xxvin: Error registering v4l2 subdevice After the booting, when I do lsmod I can see that all the...
    on Mar 21, 2012

  • Forum Post: Re: Regarding V4L2 drivers

    Jun_Zhang
    Hi Hardik, I just got my custon dm814x board and now I am back on this v4l2 driver. I have applied the two patches and make modules and updated all the related modules like vpss.ko in the filesystem. Now when i run root@dm814x-evm:~# /etc/init.d/load-hd-v4l2-firmware.sh start Then I got following...
    on Mar 30, 2012

  • Forum Post: Re: Regarding V4L2 drivers

    Jun_Zhang
    Hi Hardik, Thanks for your reply. What I did is: 1. Apply the two patches 2. Make modules under linux 3. overwrite all the old firmwares in the filesystem: vpss ti81xxfb ti81xxvo ti81xxvin ti81xxhdmi 4. load dm814x_hdvicp.xem3 and dm814x_hdvpss_v4l2.xem3 5. a)modprobe vpss sbufaddr...
    on Apr 2, 2012

  • Forum Post: Re: Regarding V4L2 drivers

    Jun_Zhang
    Hi Hardik, Thanks for your help very much. Now when I insert vpss and ti81xxvin, the board can return the right value. I am gong to run the test to verify it. Regards, Jun
    on Apr 4, 2012

  • Forum Post: Re: DM814x Gstreamer problem with RGB raw video

    Mohammad Kiaei
    Our customized DM814x board is able to capture RGB raw video. We intend to send the captured video over the network using TI-Gstreamer elements for compression and packetization. However, it seems that OpenMax elements of TI-Gstreamer are only capable of handling YUV video data not RGB. The OpenMax elements...
    on Apr 18, 2012

  • Forum Post: cannot do V4L2 video capture after applying patches

    Jun_Zhang
    Greetings, I have a custom board with a ITE HDMI receiver. My sdk is latest one v5.03.01 I am trying to the video capture with v4l2 drivers. What I have did is: (1) Applying sub_devices_calls_removed.patch and make_select_decoder.patch (2) comment following codes in ti81xxin_main.c...
    on Apr 16, 2012

  • Forum Post: any example for v4l2 to h264encoder?

    Jun_Zhang
    Greetings, My usecase is v4l2capture->h264enc. I began from saloopback demo and it is working fine. Then, I am trying to export v4l2 buffer into omx_h264 using memcpy and as I am dealing with raw video data the frame rates dropped badly due to the low speed of memcpy. Just wondering is a v4l2...
    on Apr 23, 2012

  • Forum Post: RGB video capture and YUV encoding of DM814x?

    Jun_Zhang
    Greetings, In this thread, there is a discussion regarding video capture and encoding capability of Davinci. http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/156922.aspx#571293 So, basically DM814x is able to capture RGB888 and only able to encode under YUV420, right? ...
    on Apr 19, 2012

  • Forum Post: add v4l2 driver in 8148 EVM

    jianxun zhan
    hi, I can not add v4l2 driver in 8148 EVM. My kernel is uImage-dm814x-evm.bin of ezsdk5.03.. My bootargs are: console=ttyO0,115200n8 rootwait rw mem=256M earlyprintk notifyk.vpssm3_sva=0xa0000000 vram=50M ti814xfb.vram=0:16M,1:16M,2:6M root=/dev/nfs nfsroot=192.168.2.76:/root/targetfs ip=192...
    on Feb 29, 2012

  • Forum Post: 814x Video Pipelines - V4L2 vs OpenMax

    Charles Krebs
    I have several questions regarding the use of V4L2 vs OpenMax for video capture and processing with the 5.04 (April 30) EZSDK. The goals are to capture dual video streams using the EVM expansion's board's composite (RS170 NTSC) and component at 480p. Once captured, the video streams will have...
    on May 8, 2012

  • Forum Post: DM8148 Port A overflow

    BenM
    Hello, I am using EZSDK 5.04.00.11 with the dm8148. I am trying to get saLoopback to capture YUV 1080p 30 fps using discrete syncs. I am capturing directly from an imager. I had everything working on DM8168 and successfully created a V4L2 subdevice and am able to capture with it using the DM8168...
    on May 22, 2012

  • Forum Post: VFCC firmware without external TVP7002 decoder

    RV
    In our custom board we don't have TVP7002 decoder and have no need for it. However VFCC in HDVPSS firmware has i2c calls to initilaize this decoder and will hang if we run it on our custom board. Since we are planning to use openmax, is there another version of HDVPSS without any video decoder...
    on Mar 5, 2012

  • Forum Post: V4L2 driver overlay capabilities

    Salim Mohamed
    Hi, I am working on DM814x with EZSDK05_04_00_11. I have build GStreamer version 1059 from the gstreamer.ti.com. I wish to change the position of video on the display. However, when I try to querry display driver capability after opening driver for /dev/video1, there is no V4L2_CAP_VIDEO_OVERLAY...
    on Aug 16, 2012

  • Forum Post: RE: V4L2 Video capture problem of 8148

    Zheng Zhang1
    hi Yong-Yi, could you share me your V4L2 capture example? thanks zheng
    on Aug 30, 2012

  • Forum Post: DM8148 ISS Capture for V4L2

    BenM
    Hello, I am trying to get the Leopard LI5M03 5MP monochrome imager working with the dm8148 evm. I have gone through all the necessary steps to bring the imager out of reset, setup all the muxes to that the video data is making it to the processor, and set up the pinmuxing for the cam_d[0:11], hsync...
    on May 17, 2012

  • Forum Post: DM8148: gstreamer + omx_videomixer and v4l2src

    Andrea Scian
    Dear All, on our custom dm8148 hw I'm trying to put together a v4l2 source (vin0, 1080p60) with a h264 (/usr/share/ti/data/videos/dm816x_1080p_demo.264 provided with EZSDK) with gstreamer by using omx_videomixer component. I can successfully use omx_videomixer with two h264, as following: gst-launch...
    on Sep 14, 2012

  • Forum Post: gstreamer omx_mjpegdec on DM8148 insufficient resources

    Andrea Collamati
    HI, I'm trying to render a mjpeg stream using gstreamer on DM8148 EVM. Sw setup is ti-ezsdk_dm814x-evm_5_03_01_15, gstreamer_ti_dm81xx Release 04 (svn 1023). gst-launch filesrc location=a.mjpg ! omx_mjpegdec ! fakesink Setting pipeline to PAUSED ... Pipeline is PREROLLING ... unrecoverable...
    on Mar 1, 2012

  • Forum Post: v4l2src capture problem

    Jun_Zhang
    Grettings, I am trying to let v4l2 capture working on my evm814x board from mistral. The EZSDK I am using is Version5_03_01_15. My bootargs are: bootargs=console=ttyO0,115200n8 rootwait rw mem=256M earlyprintk notifyk.vpssm3_sva=0xBF900000 vram=50M ti814xfb.vram=0:16M,1:16M,2:6M root=/dev...
    on Feb 29, 2012
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