This series adds SECAM support to the usbtv driver, while also attempting to mimic the Windows driver's behavior regarding color encoding selection.
I made USB captures of the device as it is set up by the Windows driver, for all the supported video standards. The analog source used is the composite output of a video card, which is configured to output a signal using the same standard as the one configured for the capture, when that is possible. This enabled me to find new values for the 0x016f register that I had missed in the v1, as well as test my patches. Unfortunately, I did not have a SECAM source for the tests, so they were limited to setting the standard to SECAM for a PAL source, and making sure the output was the same between the Windows and the Linux driver. The capture adapter used for the tests is a QSonic VG-310, with USB ID 1b71:3002. The Windows driver used as reference is EasyCap driver version 2.1.1.2 (2011-06-08). The changes since the v1 are: - the output resolution is selected independently of the color encoding. For instance, PAL-M, while using a PAL-like color encoding, has the same resolution as NTSC-M, so the NTSC resolution will be used in that case - conversely, the color encoding is configured independently of the resolution - PAL and NTSC variants have a different value for register 0x016f - the norm value set by the user is no longer overwritten by the driver with a generic value when selecting the output resolution, so specific standards (e.g. NTSC-443) can actually be selected - minor cosmetic changes Hugo Grostabussiat (6): usbtv: Use same decoder sequence as Windows driver usbtv: Add SECAM support usbtv: Use V4L2 defines to select capture resolution usbtv: Keep norm parameter specific usbtv: Enforce standard for color decoding usbtv: Use the constant for supported standards drivers/media/usb/usbtv/usbtv-video.c | 115 ++++++++++++++++++++++---- drivers/media/usb/usbtv/usbtv.h | 2 +- 2 files changed, 100 insertions(+), 17 deletions(-) -- 2.17.0
