On Wed, Aug 5, 2009 at 5:14 AM, Karicheri, Muralidharan<m-karicheri2@xxxxxx> 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
