It is my understanding that you should set up the format with media-ctl, and only check the result in your application. In other words, using G/S/TRY_FMT ioctl on the video output nodes won't work. You can try the following pipeline : ov3640 -> ccdc -> previewer -> previewer V4L2 output and set previewer sink pad to bayer and previewer src pad to yuv I don't think you can output rgb565 however. It is only an input format for the CCDC. Anyway, when you use G/S/TRY_FMT ioctl, always check the returned format. 2013/8/20 Tom <Bassai_Dai@xxxxxxx>: > Hello, > > I try from my own application out to grab an image with a ov3640 sensor. For > this I need to understand the media-api and the isp pipeline correctly. > > I had problems with the use of media-ctl so I implemented the functionality > into my application and it seems to work fine. Without an error I grabbed an > image, but it was black. > > So maybe my format settings are not correctly set. My Question is: > > For example I want to grab a rgb565 image from my camera sensor and display > it on a webpage. my pipeline looks like this: > > ov3640->ccdc->memory > > Would it be enough to just set a raw bayer format on the source and sink > pads and just the format of the video device (/dev/video2) as rgb565? > > Regards, Tom > > > > > > -- > 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 -- 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
