Christophe Thommeret wrote: > 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 :) It simply doesn't make sense to specify QAM_AUTO if dvb_frontend_info.caps doesn't contain FE_CAN_QAM_AUTO (or FE_CAN_QAM_16 for that matter). Regards, Andreas _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
