[ My appolgies if this shows up mulitple times on the list. I have
posted it twice and not seen it in 12 hours -- nor seen any bounces.
I have now subscribed to the list in the hopes that that helps it get
through. ]
I tried this once before but let me try again.
I am using Alsa 0.5.12 but have also tried 0.9.0beta9 with no more
luck. I have lots of applications that want to use the OSS sound
system but I love Alsa so I am trying to use the OSS
shims.
I seem to be able to write to /dev/dsp with no troubles. "esd" for
instance has no trouble opening /dev/dsp and sending sound there which
I can hear through the speakers no problem.
I want to capture from the OSS /dev/dsp device as well. That seems to
yield no usable data. I know there is data to be recorded as I can
record it with "arecord". However when I simply try to read from
/dev/dsp all I get are 0x80s:
# hdump /dev/dsp
00000000: 80808080 80808080 80808080 80808080 [................]
00000010: 80808080 80808080 80808080 80808080 [................]
00000020: 80808080 80808080 80808080 80808080 [................]
00000030: 80808080 80808080 80808080 80808080 [................]
00000040: 80808080 80808080 80808080 80808080 [................]
00000050: 80808080 80808080 80808080 80808080 [................]
00000060: 80808080 80808080 80808080 80808080 [................]
00000070: 80808080 80808080 80808080 80808080 [................]
00000080: 80808080 80808080 80808080 80808080 [................]
00000090: 80808080 80808080 80808080 80808080 [................]
000000a0: 80808080 80808080 80808080 80808080 [................]
000000b0: 80808080 80808080 80808080 80808080 [................]
000000c0: 80808080 80808080 80808080 80808080 [................]
000000d0: 80808080 80808080 80808080 80808080 [................]
000000e0: 80808080 80808080 80808080 80808080 [................]
000000f0: 80808080 80808080 80808080 80808080 [................]
00000100: 80808080 80808080 80808080 80808080 [................]
00000110: 80808080 80808080 80808080 80808080 [................]
00000120: 80808080 80808080 80808080 80808080 [................]
00000130: 80808080 80808080 80808080 80808080 [................]
00000140: 80808080 80808080 80808080 80808080 [................]
00000150: 80808080 80808080 80808080 80808080 [................]
00000160: 80808080 80808080 80808080 80808080 [................]
Of course, applications that want to read from the OSS PCM device open
it and do the various ioctls to set up the device, but regardless, I
should be able to see data from just reading /dev/dsp, no?
Here is some information from /proc/asound:
$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 0.5.12.
Compiled on Nov 7 2001 for kernel 2.4.12-3mdk with versioned symbols.
$ cat /proc/asound/cards
0 [card1 ]: YMFPCI - Yamaha DS-XG PCI (YMF754)
Yamaha DS-XG PCI (YMF754) at 0xdd000000, irq 9
$ cat /proc/asound/pcm
00-00: YMFPCI : YMFPCI : playback 32 : capture 1
00-01: YMFPCI - S/PDIF : YMFPCI - S/PDIF : playback 1
00-02: YMFPCI - AC'97 : YMFPCI - AC'97 : capture 1
$ cat /proc/asound/seq
cat: /proc/asound/seq: Is a directory
[brian@pc brian]$ cat /proc/asound/seq/drivers
snd-seq-midi,empty,1
[brian@pc brian]$ cat /proc/asound/sndstat
Sound Driver:3.8.2-980706 (ALSA v0.5.12 emulation code)
Kernel: Linux pc 2.4.12-3mdk #1 Tue Oct 16 16:40:46 CEST 2001 i686
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
Yamaha DS-XG PCI (YMF754) at 0xdd000000, irq 9
Audio devices:
0: YMFPCI (DUPLEX)
Synth devices: NOT ENABLED IN CONFIG
Midi devices:
0: MPU-401 (UART)
Timers:
7: system timer
Mixers:
0: SigmaTel STAC9708/11
$ cat /proc/asound/devices
0: [0] : control
2: [0- 0]: hardware dependent
6: [0- 0]: mixer
8: [0- 0]: raw midi
16: [0- 0]: digital audio playback
17: [0- 1]: digital audio playback
24: [0- 0]: digital audio capture
26: [0- 2]: digital audio capture
33: : timer
$ cat /proc/asound/oss-devices
0: [0- 0]: mixer
2: [0- 2]: raw midi
3: [0- 3]: digital audio
4: [0- 4]: digital audio
5: [0- 5]: digital audio
9: [0- 9]: raw midi
10: [0-10]: hardware dependent
12: [0-12]: digital audio
$ cat /etc/modules.conf [ edited output]
above snd-card-ymfpci snd-pcm-oss
alias sound-slot-0 snd-card-ymfpci
Can anyone shed any light on why I can't capture from the OSS PCM
device?
b.
--
Brian J. Murrell
_______________________________________________
Alsa-user mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-user
