On Wed, 10 Jun 2009, Karicheri, Muralidharan wrote: > > > >> We need > >> streaming capability in the driver. This is how our driver works > >> with mt9t031 sensor > >> raw-bus (10 bit) > >> vpfe-capture ----------------- mt9t031 driver > >> | | > >> V V > >> VPFE MT9T031 > >> > >> VPFE hardware has internal timing and DMA controller to > >> copy data frame by frame from the sensor output to SDRAM. > >> The PCLK form the sensor is used to generate the internal > >> timing. > > > >So, what is missing in the driver apart from the ability to specify > >a frame-rate? > > > [MK] Does the mt9t031 output one frame (snapshot) like in a camera or > can it output frame continuously along with PCLK, Hsync and Vsync > signals like in a video streaming device. VPFE capture can accept frames > continuously from the sensor synchronized to PCLK, HSYNC and VSYNC and > output frames to application using QBUF/DQBUF. In our implementation, we > have timing parameters for the sensor to do streaming at various > resolutions and fps. So application calls S_STD to set these timings. I > am not sure if this is an acceptable way of implementing it. Any > comments? Yes, it is streaming. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- 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
