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TDA4VM: enable DCC VISS will be suspend

Part Number: TDA4VM

Hi,

We are  porting OVX3C on TDA4VM.

OVX3C output data type is RAW12, resolution is 1920x1080.

We used SDK version is 7.0.0

If we remove ISS_SENSOR_FEATURE_DCC_SUPPORTED from sensor feature, we can get normal preview.

If we add ISS_SENSOR_FEATURE_DCC_SUPPORTED to sensor feature, we can't get imaging preview.

We did many debug and found:

1. we tried imx390 and ar0233, the result is same.

2. we found enable dcc, VISS will be suspend by under code

file:         Vx_vpac_viss_target.c

static vx_status VX_CALLBACK tivxVpacVissProcess(
       tivx_target_kernel_instance kernel,
       tivx_obj_desc_t *obj_desc[],
       uint16_t num_params, void *priv_arg)
{

...

            /* Wait for Frame Completion */
            tivxEventWait(vissObj->waitForProcessCmpl,
                TIVX_EVENT_TIMEOUT_WAIT_FOREVER);

...

}

3. we found if we disable h3a output and disable h3a set, we can get imaging preview.

Could you help analyze the issue and give us some advice?

Thanks