It appears that the resizer subsystem is still a part of the DaVinci architecture in the 8148 but the kernel for it does not contain files the originally published paper, spraai7b.pdf references to use that subsystem and I cannot find code in the SDK that refers to this subsystem. Can it still be used and is there analgous example code that does so?
Hi,
Resizer sub-system is different thatn previous Davinci SoCs like DM644x or DM643x. In fact DM816x and DM814x is having totally different video sub-system.
Regards,
Hardik Shah
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I understand the the interface has changed to use the resizer. I'm asking for some sample code that demonstrates how to use it.
Currently Linux interface like V4L2 or character driver is not supported. We are supporting all memory to memory operation using OpenMax components which are part of EZSDK release. You can refer to VFPC components for details. Latest EZSDK can be downloaded@http://www.ti.com/tool/linuxezsdk-davinci
I'm not sure you understood my question. Your response was about "V4L2 and character driver" but I was asking about an interface to the resizer hardware subsystem. Can you explain how your answer is relevant to my question?
Interface to Resizer sub-system is through OpenMax VFPC components. If this is not you are looking for than can you please explain me in detail.
This might be what I'm looking for but can you be a little more specific as to where exactly I can find this new interface to the resizer?
You can refer to EZSDK userGuide on how to use openMax components to control resizer hardware.
No there is no reference to the resizer in the EZSDK user guide. If you are refferring to another specific document please send me a link to that document.
Can you please send me a link to the document or wiki to which you are referring?
In the ti814X platform, EZSDK has provided a new OMX component: Video Frame Processing Component(VFPC). this componet is mainly for memory to memory operation, inculding resizing function. There is not any standalone resize SW avaialbe in the EZSDK or PSP other than the VPFC.
You have to configure the VFPC to enable the scaling function.
Regards
yihe
PS: Please mark this post as answered via the Verify Answer button below if you think it answers your question. Thanks!
Sounds like you know all about how to use it and are vaguley describing to me that it is possibleCheck the box on a response, Good. Now, I just need top have that SPECIFIC information myself. Can you send me a link to the document that describes how to configure and use this rescaler? I find no reference in the Software Developers Guide to VFPC.
Please look into $(EZSDK)/component-sources/omx_05_02_00_30 for example code and documentation for VFPC.
VFPC Resizer interface is also available via gstreamer in the $(EZSDK)/component-sources/gst-openmax_DM81XX_RELEASE_0_03 folder.
Your version numbers may vary depending upon which version of EZSDK you are using. Latest one, released a couple of days ago is here:
http://software-dl.ti.com/dsps/dsps_public_sw/ezsdk/latest/index_FDS.html
and it has more recent updates.