Il 13/01/2012 14:09, Jim Darby ha scritto: > On 13/01/12 11:21, Mauro Carvalho Chehab wrote: > >> Hmm... this patch shouldn't be causing troubles for an application that >> only uses DVBv3 call. Is Kaffeine filling the DTV_DELIVERY_SYSTEM with >> SYS_UNDEFINED (0)? > > I think this is perhaps where (some of) our problems are starting. I > just looked at the kaffeine source code and, as far as I can make out, > DTV_DELIVERY_SYSTEM is filled out by performing a FE_SET_PROPERTY ioctl > with a key/value pair of something like DTV_DELIVERY_SYSTEM/SYS_DVBS2 > (amongst other parameters). > > The issue here is that kaffeine *only* performs any sort of > FE_SET_PROPERTY ioctl for DVB-S2. It certainly doesn't for any form of > DVB-T (2 or original). > > It would therefore appear that kaffeine is committing a sin of omission > in not setting the front-end properties and hence we have this problem. Hi Jim, that's because Kaffeine is using the new DVBv5 API to interface with DVB-S2 hardware (as this is the only API supported), while it is using the old DVBv3 API to interface to DVB-T/C hardware. It's not a real problem, as in dvb-core there is some emulation logic that takes care of supporting DVBv3 applications. > Mauro, if you can confirm that this is the case and that with the latest > linux-media drivers performing the FE_SET_PROPERTY ioctl is mandatory > then I can work with the kaffeine developers and get this fixed. > > For reference, the existing kaffeine works with the stock 3.2.0 kernel. > It's just the linux-media from linux-tv.org that breaks it. Mauro already fixed the bug I reported. But if you can work with the Kaffeine developers to adopt DVBv5 API also for DVB-T/C tuners, it would be a nice contribution. Best regards, Gianluca -- 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
