On Fri, 2010-04-02 at 18:15 -0300, Mauro Carvalho Chehab wrote: > Devin Heitmueller wrote: > In the case of a V4L x DVB type of lock, this is not to protect some memory, but, > instead, to limit the usage of a hardware that is not capable of simultaneously > provide V4L and DVB streams. This is a common case on almost all devices, but, as > Hermann pointed, there are a few devices that are capable of doing both analog > and digital streams at the same time, but saa7134 driver currently doesn't support. I know a driver that does: cx18 can handle simultaneous streaming of DTV and analog. Some cards have both an analog and digital tuner, so both DTV and analog can come from an RF source simultaneously. (No locking needed really.) Some cards only have one tuner, which means simultaneous streaming is limited to DTV from RF and analog from baseband inputs. Streaming analog from an RF source on these cards precludes streaming of DTV. (An odd locking ruleset when you consider MPEG, YUV, PCM, and VBI from the bridge chip can independently be streamed from the selected analog source to 4 different device nodes.) Regards, Andy -- 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
