We also use a similar approach on the drivers for our Intel(r) CE Media Processors. Our custom systems driver provides one screen, three encoders (HDMI for the HDMI signal, component for the YCBCR signal, and composite for both the CBVS and YC signals) and two mixers (0/Pipe A with layer visible controls, and 1/Pipe B which always contains the blended visible layers from Pipe A so it provides no layer visibility controls). The HDMI encoder is always associated with mixer 0 (primary blended HD/ED/SD output), composite encoder is always associated with mixer 1 (secondary SD output) and component encoder can be assigned to receive output from either mixer 0 or 1. Thus Pipe B's output (mixer 1) is the downscaled/cloned output of the main Pipe A (mixer 0).
I would recommend investigating direct usage of the IDirectFBScreen interface. For example, as a start determine what the capabilities are using the GetDescription, GetEncoderDescriptions and GetMixerDescriptions functions. Best Regards, Timothy -- Timothy Strelchun CE Software Engineering Digital Home Group Intel Corporation The views expressed above are my own and not those of Intel ________________________________ From: directfb-dev-boun...@directfb.org [mailto:directfb-dev-boun...@directfb.org] On Behalf Of Lionel Landwerlin Sent: Wednesday, January 20, 2010 3:12 AM To: YD; directfb-dev@directfb.org Subject: Re: [directfb-dev] question about primary and secondary output simultaneously. I had the same problem with an sh based chip, but I didn't find a way to clone the display from one output to another using the DirectFB API. So I made it myself inside a custom gfxdriver. The driver exposes only one screen to directfb, but 2 encoders, 2 mixers and 2 outputs. This lets the user define the resolution on each output. Unfortunatly the driver is proprietary, I can provide the source code as an example... -- Lionel On Wed, Jan 20, 2010 at 11:52 AM, YD <ydg...@gmail.com> wrote: Hello, I am using the DirectFB for TVout. This chip(MIPS based) has 1 composite output 1 component output. I'd like to output both simultaneosly. But I didnot findout how. only option --dfb:primary-layer=0 ==> HD output --dfb:primary-layer=1 ==> SD output Is it possible dual output at the same time ? please give me the recommendation. Thanks in advnace. _______________________________________________ directfb-dev mailing list directfb-dev@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
