Hi all
I have a Pinnacle PCTV card. When watching tv all is ok. I see picture,
hear sound. So I try to capture sound
> insmod btaudio
> sox -w -r 32000 -t ossdsp /dev/dsp1 -t .dat a.txt
Again see no errors. But when I open the file a.txt I see constant signal
; Sample Rate 32000
0 0.99996948
3.125e-05 0.99996948
6.25e-05 0.99996948
9.375e-05 0.99996948
0.000125 0.99996948
and so on.
OS Slackware-8.0, Linux-2.4.18
Kernel messages are:
i2c-core.o: i2c core module
i2c-algo-bit.o: i2c bit algorithm module
Linux video capture interface: v1.00
bttv: driver version 0.7.83 loaded
bttv: using 2 buffers with 2080k (4160k total) for capture
bttv: Host bridge is VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x]
bttv: Host bridge is VIA Technologies, Inc. VT82C596 Power Management
bttv: Bt8xx card found (0).
PCI: Found IRQ 12 for device 00:0b.0
PCI: Sharing IRQ 12 with 00:0b.1
bttv0: Bt878 (rev 17) at 00:0b.0, irq: 12, latency: 32, memory: 0xd9001000
bttv0: detected: Pinnacle PCTV [card=39], PCI subsystem ID is 11bd:0012
bttv0: using: BT878(Pinnacle PCTV Studio/Ra) [card=39,autodetected]
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: miro: id=27 tuner=16 radio=no stereo=no
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
tvaudio: TV audio decoder + audio/video mux driver
tvaudio: known chips:
tda9840,tda9873h,tda9874a,tda9850,tda9855,tea6300,tea6420,tda8425,pic16c54
(PV951)
i2c-core.o: driver generic i2c audio driver registered.
i2c-core.o: driver i2c TV tuner driver registered.
tuner: chip found @ 0xc2
bttv0: i2c attach [client=Philips SECAM,ok]
i2c-core.o: client [Philips SECAM] registered to adapter [bt848 #0](pos. 0).
bttv0: PLL: 28636363 => 35468950 ... ok
and
btaudio: driver version 0.7 loaded [digital+analog]
PCI: Found IRQ 12 for device 00:0b.1
PCI: Sharing IRQ 12 with 00:0b.0
btaudio: Bt878 (rev 17) at 00:0b.1, irq: 12, latency: 32, mmio: 0xd9002000
btaudio: using card config "default"
btaudio: registered device dsp0 [digital]
btaudio: registered device dsp1 [analog]
btaudio: open analog dsp [35]
btaudio: fmt: bits=16
btaudio: stereo=0 channels=1
btaudio: rate: req=44100 dec=10 shift=2 hwrate=179200 swrate=44800
btaudio: bufsize=131072 - bs=8192 bc=16 - ls=2048, lc=64
btaudio: recording started
btaudio: recording stopped
Thanks in advance.
