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DM388: How to flush the YUV buffers ?

Kailash Negi
Intellectual 590 points
Part Number: DM388

Hi All,

While running the capture display demo on dm388evm with 3.8.1 ipnc sdk  the buffers are not flushed , I can see the repeated frames even after disconnecting the input while running the demo.How to flush the YUV buffers so that i should see a blank screen when input is disconnected in between the demo.

I tried to memset the yuv frames to 0x80 in CaptureLink_drvPutEmptyFrames.

for (frameId = 0; frameId < pFrameList->numFrames; frameId++)
 {
            pFrame = pFrameList->frames[frameId];
            size = Utils_getBufferSize();// This one returns the size of the frame which is used while allocating the YUV frame buffer for each frame.
            memset(pFrame->addr[0][0], 0x80, size);

}

Thanks

Kailash

  • 0
    Intellectual 760 points

    Hi Kailash,

    Capture will stop giving YUV data when you dont get interrupt from input source but display would be displaying last filled buffer data.
    So, You need to write mechanism to flush display buffer.

    Regards,
    Prashant
    Pathpartner Technology Pvt. Ltd.

  • 0
    Mastermind 8715 points
    Simply you can make all buffer contents '0' using a memset periodically. But, please be cautious on performance issues i real time use case scenarios.