OMX camera WITHOUT tunneling

[Yam]

Hello

I am still desperately trying to create a stereo camera using 2 raspberry pis (yes i know there is a new board that can run 2 cameras but I've decided to complete this project as an exercise).
I am so very close to getting a working program but I am unable to get the camera to behave without using tunneling.

I can use other components without tunneling. But when I try and enable port on the preview port (70) of the camera it just freezes.
Does anyone have a working example of a camera that does NOT use tunneling?

[jean343]

Hi,

I wish I could write the entire example but I don't have access to a PI.

After you get the OMX_EventPortSettingsChanged event
Get the output buffer by

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outBuf = ilclient_get_output_buffer(component, out_port, 1); //  1 to block

Then register a callback

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ilclient_set_fill_buffer_done_callback(client, _fill_done_callback, this);

Finally fill the buffer:

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OMX_FillThisBuffer(component, outBuf);

In your callback:

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static void _fill_done_callback(void *userdata, COMPONENT_T *comp) {
  if (outBuf->nFilledLen == 0) {
    return;
  } else {
    // Do something with outBuf
    outBuf->nFilledLen = 0;
  }
  OMX_ERRORTYPE r = OMX_FillThisBuffer(encoder.handle, outBuf);
  if (r != OMX_ErrorNone) {
    printf("Error filling buffer: %s\n", Component::err2str(r));
  }
  }

Hope it helps