On Wed, Aug 5, 2009 at 5:14 AM, Karicheri, Muralidharan<m-kariche...@ti.com> wrote: > 2) Previewer & Resizer driver. I am working with Vaibhav who had worked on an > RFC for this. The previewer and resizer devices are doing memory to memory > operations. Also should be flexible to use these hardware with capture driver > to do on the fly preview and resize. The TI hardware is parameter intensive. > We believe these parameters are to be exported to user space through IOCTLs > and would require addition of new IOCTLs and extension of control IDs. We > will be working with you on this as well.
FWIW, for our SuperH Mobile devices we make use of UIO and user space libraries to support for our on-chip multimedia blocks. These blocks do scaling, rotation, color space conversion and hardware encode/decode of various formats including h264 and mpeg4 in HD resolution. Apart from UIO we use V4L2 for the camera capture interface driver sh_mobile_ceu_camera.c. It has support for on the fly color space conversion and scaling/cropping. The CEU driver is making use of videobuf-dma-contig.c and the USERPTR changes included in 2.6.31-rc gives the driver zero copy frame capture support. All of this is of course available upstream. Cheers, / magnus -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
