"Rene H. Larsen" wrote: > > It seems that bttv 0.7.44/0.7.45 has a few problems regarding stereo > detection on msp34xx. This is what I get when I tune into a channel > that is transmitting in NICAM stereo: > > ,---- > | msp34xx: setvolume: 0:0 0x00 0x00 > | tuner: tv freq set to 479.25 > | msp3410: setting mode: autodetect start (0x0001) > | msp3410: detection still in progress > | msp3410: current mode: 5.5/5.85 B/G NICAM FM (0x0008) > | msp34xx: setbass: 32768 0x00 > | msp34xx: settreble: 32768 0x00 > | msp34xx: setvolume: 65535:65535 0x73 0x00 > | msp34xx: stereo detect register: 0 > `---- > > > The actual sound *is* in stereo, so this is mostly a cosmetic problem > (xawtv reports mono audio). The stereo detect register doesn't make any sense in NICAM mode. I think the msp3400 driver doesn't set the msp->mode correctly in most cases if using the simple programming mode, but msp->mode is used by the autodetect_stereo procedure. You can try loading the msp3400 module with simple=0 (or you can fix it, just put in the missing cases in the switch(val) in the msp3410d_thread procedure, and it *might* work). > For a stereo transmission that isn't NICAM encoded I get: > > ,---- > | msp34xx: setvolume: 0:0 0x00 0x00 > | tuner: tv freq set to 607.75 > | msp3410: setting mode: autodetect start (0x0001) > | msp3410: detection still in progress > | msp3410: detection still in progress > | msp3410: current mode: 5.5/5.74 B/G Dual FM-Stereo (0x0003) > | msp34xx: setbass: 32768 0x00 > | msp34xx: settreble: 32768 0x00 > | msp34xx: setvolume: 65535:65535 0x73 0x00 > | msp34xx: stereo detect register: 0 > | msp34xx: stereo detect register: 0 > | + a lot more of these... > `---- This one looks strange. Are you really getting stereo sound here, because in FM-Stereo mode the stereo detect register should return useful values, I think. Regards, Roland Scheidegger
