Hi,
just played around with btaudio driver of bttv-07.63 . Current version
delivers only a mono signal. To get the digital stereo signal I had to
modify msp3400.c so that mono/stereo/lang1/lang2 switches are set to
digital out port too.
--- snip ---
--- msp3400.c.orig Fri Mar 30 22:43:22 2001
+++ msp3400.c Thu Apr 19 18:46:19 2001
@@ -547,6 +547,7 @@
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000a,src);
+ msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,src);
}
}
--- snip ---
README.btaudio:
I don't think that it is possible to get higher sampling rates than 32kHz
through digital output port. msp34xx docs only talk of 32kHz and there is to
my knowlegde no way to set this sampling rate.
For a primitive stereo sampling I used:
modprobe btaudio debug=1 dsp=2
sox -c 2 -w -t ossdsp /dev/dsp2 -t ossdsp /dev/dsp
If there are cards which don't support digital output mode, I think it would
be interesting to collect a sort of blacklist for buying information.
--
mfg
Stefan Lucke (Stefan.Lucke@xxxxxxxx)
