RE: OMAP ISP and Overlay
-Original Message- From: linux-media-ow...@vger.kernel.org [mailto:linux-media- ow...@vger.kernel.org] On Behalf Of Laurent Pinchart Sent: Wednesday, August 25, 2010 2:56 PM To: Lane Brooks Cc: linux-media@vger.kernel.org Subject: Re: OMAP ISP and Overlay Hi Lane, On Tuesday 24 August 2010 15:40:01 Lane Brooks wrote: So far I have the everything working with the OMAP ISP to where I can stream video on our custom board. Great news. A new version of the ISP driver will soon be published with all the legacy code removed. We need a few days to setup the repository properly. You can already get a preview at http://git.linuxtv.org/pinchartl/media.git (omap3isp- rx51 branch). On a previous generation of hardware with a completely different processor and sensor, we used the V4L2 overlay feature to stream directly to our LCD for preview. I am wondering what the plans are for overlay support in the omap ISP? How does the overlay feature fit into the new media bus feature? The OMAP3 ISP driver won't support V4L2 overlay directly. However, you can use the USERPTR streaming mode and pass framebuffer memory directly to the ISP driver, resulting in DMA to the framebuffer and improved efficiency. Sorry for late reply, Just wanted to add on top of this, you could use V4L2 Display driver here which supports 2 video planes (over /dev/video0 /dev/video1) along with both User pointer mode and MMAP mode of operation. Thanks, Vaibhav -- Regards, Laurent Pinchart -- 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 -- 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
Re: OMAP ISP and Overlay
Hi Lane, On Tuesday 24 August 2010 15:40:01 Lane Brooks wrote: So far I have the everything working with the OMAP ISP to where I can stream video on our custom board. Great news. A new version of the ISP driver will soon be published with all the legacy code removed. We need a few days to setup the repository properly. You can already get a preview at http://git.linuxtv.org/pinchartl/media.git (omap3isp- rx51 branch). On a previous generation of hardware with a completely different processor and sensor, we used the V4L2 overlay feature to stream directly to our LCD for preview. I am wondering what the plans are for overlay support in the omap ISP? How does the overlay feature fit into the new media bus feature? The OMAP3 ISP driver won't support V4L2 overlay directly. However, you can use the USERPTR streaming mode and pass framebuffer memory directly to the ISP driver, resulting in DMA to the framebuffer and improved efficiency. -- Regards, Laurent Pinchart -- 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
OMAP ISP and Overlay
Laurent, So far I have the everything working with the OMAP ISP to where I can stream video on our custom board. On a previous generation of hardware with a completely different processor and sensor, we used the V4L2 overlay feature to stream directly to our LCD for preview. I am wondering what the plans are for overlay support in the omap ISP? How does the overlay feature fit into the new media bus feature? Thanks, Lane -- 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
