Hi,
I'm trying to get the OMX H264 decoder component to support dynamic input size changes.
The decoder is configured for 1080p and can play back 1080p H264 files ok. However, I have a 720p file it also needs to be able to play back without restarting the app.
The output from the decoder goes through a DEI component and is scaled to fit on a 1080p display.
When the input size is changed to 720p I reconfigured the DEI as follows:
OMX_INIT_PARAM (&chResolutionNew);
// TODO do these numbers depend on the decode frame size ?
chResolutionNew.Frm0Width = width;
chResolutionNew.Frm0Height = height;
chResolutionNew.Frm0Pitch = pAppData->nDecStride;
chResolutionNew.Frm1Width = 0;
chResolutionNew.Frm1Height = 0;
chResolutionNew.Frm1Pitch = 0;
chResolutionNew.FrmStartX = startx;
chResolutionNew.FrmStartY = starty;
chResolutionNew.FrmCropWidth = cropWidth;
chResolutionNew.FrmCropHeight = cropHeight;
chResolutionNew.eDir = OMX_DirInput;
chResolutionNew.nChId = 0;
eError = OMX_SetConfig (pAppData->pDei2Handle,
(OMX_INDEXTYPE) OMX_TI_IndexConfigVidChResolution,
&chResolutionNew);
if (eError != OMX_ErrorNone)
{
ERROR ("failed to set input channel resolution\n");
}
The problem is that the 720p decoded frames appear like this with the remaining part of the image appearing as noise:
How do I properly reconfigure the decoder and DEI to support dynamic H264 input size changes? I need this to happen without restarting the application.
Thanks,
Steven