Hi, Guennadi, On 05/16/2013 10:46 PM, Guennadi Liakhovetski wrote: > On Thu, 16 May 2013, Andrei Andreyanau wrote: > >> Hi, Laurent, >> I have an issue with the mt9p031 camera. The kernel version I use >> uses soc camera framework as well as camera does. And I have >> the following thing which appears randomly while capturing the >> image using gstreamer. When I start the capture for the first time, it >> shows the correct image (live stream). When I stop and start it again >> it may show the image in purple (it can appear on the third or fourth >> time). Or it can show the correct image every time I start the capture. >> Do you have any idea why it appears so? > Wrong clock or *sync polarity selection? Which leads to random > start-of-frame misplacement? > Do you mean pixel clock polarity? If so, I checked it - with it being inverted - the image capture goes well (purple color also appears from time to time), but in the case it is not inverted I see a noise on the screen. Anyway, I found one solution that lead me to this: I have a correct image on the LCD display, connected via HDMI, I have a correct video stream that was captured into the file, but I get the purple-coloured live stream on the display, connected via LVDS port on the board (for now - every time I capture the stream from the camera sensor). So I used the register 0x0B (Restart), bit 0 (abandon the current frame and restart from the first row) set to 1 each time the function s_stream is called. What do you think? By the way, this register is not used in the latest kernel. Regards, Andrei -- 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
