Hi Sriram, On Thursday 18 September 2014 15:10:13 Sriram V wrote: > Hi Laurent, > > What you are essentially saying is > > CSI2A => Smart Sensor (YUV422) > CSI2C => Sensor that gives out RAW Bayer. Not quite. You can have the following pipelines running in parallel. Sensor A -> CSI2A -> memory Sensor B -> (CSI1/CCP2/CSI2C ->) CCDC -> preview -> resizer -> memory The format captured at the CSI2A output will be set by the sensor. If you use a smart sensor that outputs YUV, you will capture YUV images. If you use a Bayer sensor, you will capture raw Bayer images. Which sensor to use will depend on your use case. The second pipeline can use the whole ISP. I've showed the full pipeline, but you can capture frames at the output of the CCDC, preview engine or resizer, depending on your use case. The H3A blocks are connected to the CCDC output, so they're only available to the second pipeline. Another option would be to run three pipelines. Sensor A -> CSI2A -> memory Sensor B -> CSI2C -> memory memory -> CSI1/CCP2 -> CCDC -> preview -> resizer -> memory (The second pipeline isn't supported by the driver now, but that's a software limitation only, it shouldn't be difficult to fix) The third pipeline would then be multiplexed between the two sensors, your userspace application would push frames captured from sensors A and B alternatively through the memory-to-memory processing pipeline. This will consume more memory bandwidth than the first option, whether it would work depends on the frame sizes and rates. Another disadvantage of this solution is that reconfiguring the processing pipeline for each frame will take time and thus lower the maximum possible frame rate (I don't have numbers though). On the upside you will be able to use H3A for both sensors. > I guess this is a driver limitation? Am i correct? > > Also, Can i have something like this? > > SMART Sensor => CSI2A => H3A => MEM (Can i have this) > CSI2C => ISP => H3A => MEM > > Can't i have H3A for both the pipelines? > Or > > Can i enable H3A on the fly for both the sensors? One After the other? -- Regards, Laurent Pinchart -- 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
