Le Tuesday 14 October 2008 12:29:49 Darron Broad, vous avez écrit : > In message <200810141133.36559.hftom@xxxxxxx>, Christophe Thommeret wrote: > > hi > > >Hi, > > > >This patch makes cx24116 to behave like other dvb-s frontends. > > Unlike most DVB-S cards the those with a cx24116 use S2API > this makes them somewhat different. > > >This is needed especially because QAM_AUTO is used in a lot of scan files. > > What scan files are you referring to? The > cx24116 only does PSK, not AM. QAM_AUTO > doesn't sound right. the cx24116 can't > auto detect anything, but that's another > story... dvbscan initial tuning data files for DVB-S don't have an entry for modulation. So an app like kaffeine simply set modulation to QAM_AUTO. Why not QPSK, you ask? Simply because DVB-S standard allows QPSK and 16QAM. Maybe there is not a single 16QAM TP all over the world, but it's still a valid modulation for DVB-S. So, we set modulation to QAM_AUTO when it's unknown/unspecified, like in dvbscan files (those being also used by kaffeine). And it works pretty well, just because most dvb-s can only do QPSK and so force modulation to QPSK instead of returning a notsup. See this as software QAM_AUTO :) P.S. This is with s2api. -- Christophe Thommeret _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
