• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 97 subscribers
  • Views 487 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Linux/TDA2PXEVM: How to save frame buffer to file in Linux usecase?

HJ Kim
Expert 1460 points
Part Number: TDA2PXEVM


Tool/software: Linux

Hi,

I'm trying to dump frame buffer and save to file in Linux usecase.

I used below api, but there was an err return at ChainsCommon_Osal_fileOpen() (fp = 01)

    fp = ChainsCommon_Osal_fileOpen(fileName, CHAINSCOMMON_OSAL_FILEMODE_WRITE_BIN);
    UTILS_assert(-1 != fp);

    ChainsCommon_Osal_fileWrite(fp, (UInt8*)ChainsCommon_Osal_getVirtAddr((Uint32)save_buffer), IMG_SIZE);
    ChainsCommon_Osal_fileClose(fp);

I assume there was a problem in rtos file access. Which partition is used for rtos file access and what file system is supported?

Is there any way to dump framebuffer of display input in Linux side?

Thanks.

  • 0
    TI__Mastermind 42515 points
    Hi HJ,

    in Linux you can use "OSA_fileWriteFile()" from "vision_sdk/links_fw/src/hlos/osa/src/osa_file.c" (it is based on standard fopen->fwrite->fclose APIs).

    Regards,
    Yordan
  • 0 in reply to Yordan Kamenov
    Expert 1460 points

    Hi Yordan,

    Thanks for your reply.

    OSA_fileWriteFile() worked well. simcop capture code is below.

    Thansk again!

       System_linkControl(chainsObj.ucObj.IssM2mSimcopLinkID, ISSM2MSIMCOP_LINK_CMD_SAVE_FRAME, &chId, sizeof(chId), TRUE);
       simcopSaveFrameStatus.chId = 0;

       do {
        System_linkControl(chainsObj.ucObj.IssM2mSimcopLinkID, ISSM2MSIMCOP_LINK_CMD_GET_SAVE_FRAME_STATUS,
          &simcopSaveFrameStatus, sizeof(IssM2mSimcopLink_GetSaveFrameStatus), TRUE);
       } while (simcopSaveFrameStatus.isSaveFrameComplete == FALSE);   

       virt_addr = (UInt8 *)OSA_memPhys2Virt(simcopSaveFrameStatus.bufAddr, OSA_MEM_REGION_TYPE_AUTO);
       OSA_fileWriteFile("/home/root/nfs/opt/vision_sdk/img.yuv", virt_addr, simcopSaveFrameStatus.bufSize);