Linux/TDA2PXEVM: How do I get data pointer from ov2775 in Linux in Vision SDK?

Wall-E

Expert 1706 points

Part Number: TDA2PXEVM

Tool/software: Linux

Hi,

I got this hardware below.

a. TDA2Px EVM x 1
b. Fusion Card/EVM x 1
c. TIDA OV2775 cameras (with Fakra cables) x 1

I can capture the image from OV2775_TIDA1130 in Linux in vision_sdk with ISS Usecases, (TDA2Px ONLY)/1CH ISS Capture + ISP + DISPLAY. and display with HDMI.

Now I need to get the image data after ISP for my application like stitching,object detect and others. But I don't know where is the image data. So how do I get the data pointer? Is it in a source file or need to use a API to copy to the RAM?

Regards

Thanks

over 6 years ago

0 Anuj Gupta over 6 years ago

TI__Genius 15985 points

Hi,

Please check for IssM2mIspLink_drvProcessData( ) in below file

Z:\ADAS\vision_sdk\links_fw\src\rtos\links_ipu\iss_m2misp\issM2mIspLink_drv_process_frame.c

and look for pOutputBuffer, this will be the output of isp link.

and pOutputBuffer->bufAddr[SYSTEM_MAX_PLANES] for actual data pointer.

Regards,

Anuj

0 Wall-E over 6 years ago in reply to Anuj Gupta

Expert 1706 points

Hi,Anuj

I checked the Int32 IssM2mIspLink_drvProcessData(IssM2mIspLink_Obj * pObj) function and I got what I want. Thanks.

And I found a save function that I could use.

pObj->saveFrame = 1;  // I enable it
                    if (pObj->saveFrame)
                    {
                        issMemIspLinkSaveFrame(pObj, chId, pOutputBuffer);
                    }

I try to run it but it seems save nothing.(My developed environment is Linux NOT BIOS)
Because I ‘ve got the data pointer,so I try to save data use this statements in issMemIspLinkSaveFrame.But it still can't save anything.

                else
                {
                    bufSize = fmt->pitch[0]*fmt->height;
                }

            }

            /************  I add ******************/
            FILE* fd = fopen("frame","w");
            fwrite(pObj->saveFrameBufAddr, bufSize, 1, fd);
            fclose(fd);
            /**************************************/

            Vps_printf(" saveRaw(0, 0x%x, filename, %d, 32, false); ",
                pObj->saveFrameBufAddr,
                bufSize / 4U);
            Vps_printf(" **************************************************** \n");

So,what should I do to save image data ?

Regards.

CalmCar

0 Anuj Gupta over 6 years ago in reply to Wall-E

TI__Genius 15985 points

Hi,

The file operation api which you are using is for linux. and IPU runs on BIOS.

Please take a reference of below file for all file related operation

vision_sdk\links_fw\src\rtos\utils_common\src\file_api.c

Regards,

Anuj

0 Wall-E over 6 years ago in reply to Anuj Gupta

Expert 1706 points

Hi,Anuj

Thank you for you help.

Regards

CalmCar

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Linux/TDA2PXEVM: How do I get data pointer from ov2775 in Linux in Vision SDK?