On Mon, Feb 23, 2009 at 03:10:07AM -0800, J.C. Roberts wrote:
> My build of -current is a few days old. I'm having problems recording
> with aucat on a particular device.
>
> The system has an integrated "Intel 82891DB AC97" audio chipset and has
> three physical jacks: one output (headphone/hp) and two inputs
> (mic/line-in). All the OpenBSD audio toys work perfectly with the
> integrated device.
>
> The system also has a "Logitech QuickCam Pro 9000" USB web cam and in
> addition to the camera, it also contains a fairly limited audio device,
> basically a cheap, mono microphone with a fixed frequency (16,000Hz).
> The dmesg and output of `audioctl -f /dev/audio1` are at the end.
>
> uvideo(4) /dev/video0
> uaudio(4) /dev/audio1
>
> With OpenBSD 4.4-Stable, I can record with the cheap microphone using
> either ffmpeg or aucat but aucat on 4.4-stable requires user ('-u')
> settings for the device to record properly.
>
> recording
> $ ffmpeg -f oss -ar 16000 -i /dev/audio1 out-ffmpeg-4.4.wav
> $ aucat -u -c 0:0 -r 16000 -f /dev/audio1 -o out-aucat-4.4.wav
> $ aucat -u -e u8 -c 0:0 -r 16000 -f /dev/audio1 -o test44.raw
> playing
> $ mplayer out-ffmpeg-4.4.wav
> $ mplayer out-aucat-4.4.wav
> $ aucat -u -e u8 -c 0:0 -r 16000 -i test44.raw
>
> Doing the same tests above on OpenBSD 4.5-current shows both ffmpeg and
> aucat no longer work for recording audio through the webcam mic. I'm
> sure there is a rate/frequency problem (i.e. playing too fast), but
> also there seems to be a lot of distortion.
does anything record correctly from it? the mic on my uvideo is
pretty much useless. actually, I have several uaudio devices which
do not work correctly. something to work on for 4.6.
> Q: Could the ffmpeg record/playback issue be due to the use of 'oss' as
> the format?
that is quite possible. ffmpeg doesn't actually check the parameters
it receives from the OSS ioctls.
> And if so, is there a "better" choice for recording
> formats with ffmpeg given the improvements in OpenBSD audio?
not yet
> Yes, I know the easy answer is to just use the perfectly working
> microphone in the integrated sound card on the main board (audio0), but
> getting this funky, cheap microphone on the webcam working properly
> with the new aucat seems useful... mainly because it worked fine with
> 4.4-stable, and the quirks of the device makes for a good test of aucat.
>
> Without the "-u" switch on aucat(1), it will try to auto configure
> itself, but on the cheap webcam microphone, aucat is ignoring the
> number of channels (1) and ignoring the fixed rate (16,000Hz).
what makes you say that?
> The most strange part of aucat on this microphone is the "-c" switch
> channel control somehow effects speed. The default number of channels is
> two (stereo) according to the man page for aucat, but the device itself
> only has one channel.
well, there are twice as many samples in stereo as in mono for the
same sample rate ...
> Using the -c switch along with rate plays close to normal speed but with
> lots of distortion.
> $ aucat -d /dev/audio1 -u -e s16le -c 0:0 -r 16000 -o out-wcam.raw
> $ aucat -u -e s16le -c 0:0 -r 16000 -i out-wcam.raw
>
> But not using the -c switch plays far too fast (with distortion)
> $ aucat -d /dev/audio1 -u -e s16le -r 16000 -o out-wcam.raw
> $ aucat -u -e s16le -r 16000 -i out-wcam.raw
>
> Q: I don't understand why/how the number of channels affects the rate?
>
> If I turn on debugging and let aucat auto-configure itself (without
> forcing the issue with the '-u' switch), you can see it's actually
> trying to resample from 16000 to 441000Hz, but the resulting file plays
> too fast and with lots of distortion.
>
> $ aucat -f /dev/audio1 -o out-wcam-plain.raw
> out-wcam-plain.raw: assuming headerless file
> safile_new: using 5872(2936) fpb
> file_new: sndio:hdl
> dev_init: hw recording s16le,0:0,16000Hz
> dev_init: using 8808 fpb
> safile_start: play/rec started
> file_new: wav:out-wcam-plain.raw
> cmap_new: out-wcam-plain.raw: s16le,0:0,16000Hz -> s16le,0:1,44100Hz
> resamp_new: 2936/8092
> ^Cdev_done: dev_mix = 0x0, dev_sub = 0x89665500
> safile_stop: play/rec stopped
> aproc_del: rpipe(hdl): terminating...
> file_del: sndio:hdl <>: delayed
> sub_hup: sub: eof
> aproc_del: sub(sub): terminating...
> aproc_del: resamp(out-wcam-plain.raw): terminating...
> aproc_del: cmap(out-wcam-plain.raw): terminating...
> aproc_del: wpipe(out-wcam-plain.raw): terminating...
> file_del: wav:out-wcam-plain.raw <WOK>: immediate
> aproc_del: wpipe(out-wcam-plain.raw): freed
> aproc_del: cmap(out-wcam-plain.raw): freed
> aproc_del: resamp(out-wcam-plain.raw): freed
> aproc_del: sub(sub): freed
> aproc_del: rpipe(hdl): has refs
> file_del: sndio:hdl <>: immediate
> aproc_del: rpipe(hdl): terminating...
> aproc_del: rpipe(hdl): freed
>
>
> I'm not sure what else I can test or try. If there is any further
> information that might be useful, just let me know.
do this:
$ audioctl -f /dev/sound1
record.{rate=16000,channels=1,encoding=slinear_le,recision=16}
$ cat > file < /dev/sound1
<speak into the mic>
^C
$ aucat -h raw -c 0:0 -r 16000 -e s16le -i file
does it sound right?
>
> Kind Regards,
> JCR
>
>
> **********************************************************
> $ audioctl -f /dev/audio1
> name=USB audio
> version=
> config=uaudio
> encodings=ulinear:8*,mulaw:8*,alaw:8*,slinear:8*,slinear_le:16,ulinear_le:16*,slinear_be:16*,ulinear_be:16*
> properties=full_duplex,independent
> full_duplex=0
> fullduplex=0
> blocksize=2288
> hiwat=28
> lowat=21
> output_muted=0
> monitor_gain=0
> mode=record
> play.rate=8000
> play.channels=1
> play.precision=8
> play.encoding=mulaw
> play.gain=127
> play.balance=32
> play.port=0x0
> play.avail_ports=0x0
> play.seek=0
> play.samples=0
> play.eof=0
> play.pause=0
> play.error=0
> play.waiting=0
> play.open=0
> play.active=0
> play.buffer_size=65536
> play.block_size=2288
> play.errors=0
> record.rate=16000
> record.channels=1
> record.precision=8
> record.encoding=mulaw
> record.gain=127
> record.balance=32
> record.port=0x0
> record.avail_ports=0x0
> record.seek=0
> record.samples=0
> record.eof=0
> record.pause=0
> record.error=0
> record.waiting=0
> record.open=1
> record.active=1
> record.buffer_size=32768
> record.block_size=1144
> record.errors=0
>
> **********************************************************
> $ dmesg
> OpenBSD 4.5-beta (GENERIC) #0: Thu Feb 19 19:32:43 PST 2009
> j...@vid.foo.bar:/usr/src/sys/arch/i386/compile/GENERIC
> cpu0: Intel(R) Pentium(R) 4 CPU 2.40GHz ("GenuineIntel" 686-class) 2.40
> GHz cpu0:
> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID,xTPR
> real mem = 2137550848 (2038MB) avail mem = 2058645504 (1963MB)
> mainbus0 at root
> bios0 at mainbus0: AT/286+ BIOS, date 04/17/03, BIOS32 rev. 0 @
> 0xfd844, SMBIOS rev. 2.31 @ 0xf0240 (51 entries) bios0: vendor IBM
> version "24KT41AUS" date 04/17/2003 bios0: IBM 8310XXS
> acpi0 at bios0: rev 0
> acpi0: tables DSDT FACP TCPA APIC BOOT
> acpi0: wakeup devices USB1(S3) USB2(S3) USB3(S3) USBE(S3) SLOT(S5) KBC_
> (S3) COMA(S5) COMB(S5) acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: apic clock running at 132MHz
> ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus 2 (SLOT)
> acpiprt2 at acpi0: bus -1 (AGP_)
> acpicpu0 at acpi0
> acpitz0 at acpi0: critical temperature 105 degC
> acpibtn0 at acpi0: PWRB
> bios0: ROM list: 0xc0000/0xb400 0xe0000/0x10000!
> pci0 at mainbus0 bus 0: configuration mode 1 (bios)
> pchb0 at pci0 dev 0 function 0 "Intel 82845G Host" rev 0x01
> vga1 at pci0 dev 2 function 0 "Intel 82845G Video" rev 0x01
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> intagp0 at vga1
> agp0 at intagp0: aperture at 0x88000000, size 0x8000000
> inteldrm0 at vga1: apic 1 int 16 (irq 11)
> drm0 at inteldrm0
> uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x01: apic 1
> int 16 (irq 11) uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev
> 0x01: apic 1 int 19 (irq 10) uhci2 at pci0 dev 29 function 2 "Intel
> 82801DB USB" rev 0x01: apic 1 int 18 (irq 5) ehci0 at pci0 dev 29
> function 7 "Intel 82801DB USB" rev 0x01: apic 1 int 23 (irq 9) usb0 at
> ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev
> 2.00/1.00 addr 1 ppb0 at pci0 dev 30 function 0 "Intel 82801BA
> Hub-to-PCI" rev 0x81 pci1 at ppb0 bus 2
> fxp0 at pci1 dev 8 function 0 "Intel PRO/100 VE" rev 0x81, i82562: apic
> 1 int 20 (irq 11), address 00:09:6b:f3:41:ad inphy0 at fxp0 phy 1:
> i82562EM 10/100 PHY, rev. 0 cbb0 at pci1 dev 10 function 0 "Ricoh 5C475
> CardBus" rev 0x81: apic 1 int 22 (irq 9) cardslot0 at cbb0 slot 0 flags
> 0 cardbus0 at cardslot0: bus 3 device 0 cacheline 0x0, lattimer 0x20
> pcmcia0 at cardslot0
> ichpcib0 at pci0 dev 31 function 0 "Intel 82801DB LPC" rev 0x01
> pciide0 at pci0 dev 31 function 1 "Intel 82801DB IDE" rev 0x01: DMA,
> channel 0 configured to compatibility, channel 1 configured to
> compatibility wd0 at pciide0 channel 0 drive 0: < 6Y250L6> wd0:
> 16-sector PIO, LBA48, 239372MB, 490234752 sectors wd0(pciide0:0:0):
> using PIO mode 4, Ultra-DMA mode 5 atapiscsi0 at pciide0 channel 1
> drive 0 scsibus0 at atapiscsi0: 2 targets
> cd0 at scsibus0 targ 0 lun 0: <LITE-ON, LTR-48246S, SUS5> ATAPI 5/cdrom
> removable wd1 at pciide0 channel 1 drive 1: <IC35L040AVER07-0>
> wd1: 16-sector PIO, LBA, 39266MB, 80418240 sectors
> cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> wd1(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 5
> ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x01: apic
> 1 int 17 (irq 9) iic0 at ichiic0
> admtemp0 at iic0 addr 0x4c: adm1032
> spdmem0 at iic0 addr 0x50: 1GB DDR SDRAM non-parity PC2700CL2.5
> spdmem1 at iic0 addr 0x51: 1GB DDR SDRAM non-parity PC2700CL2.5
> auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x01: apic 1
> int 17 (irq 9), ICH4 AC97 ac97: codec id 0x41445374 (Analog Devices
> AD1981B) ac97: codec features headphone, 20 bit DAC, No 3D Stereo
> audio0 at auich0
> usb1 at uhci0: USB revision 1.0
> uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
> usb2 at uhci1: USB revision 1.0
> uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
> usb3 at uhci2: USB revision 1.0
> uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
> isa0 at ichpcib0
> isadma0 at isa0
> com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> pckbc0 at isa0 port 0x60/5
> pckbd0 at pckbc0 (kbd slot)
> pckbc0: using irq 1 for kbd slot
> wskbd0 at pckbd0: console keyboard, using wsdisplay0
> pms0 at pckbc0 (aux slot)
> pckbc0: using irq 12 for aux slot
> wsmouse0 at pms0 mux 0
> pcppi0 at isa0 port 0x61
> midi0 at pcppi0: <PC speaker>
> spkr0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
> fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> mtrr: Pentium Pro MTRR support
> uvideo0 at uhub0 port 6 configuration 1 interface 0 "Logitech QuickCam
> Pro 9000" rev 2.00/0.08 addr 2 video0 at uvideo0
> uaudio0 at uhub0 port 6 configuration 1 interface 2 "Logitech QuickCam
> Pro 9000" rev 2.00/0.08 addr 2 uaudio0: audio rev 1.00, 2 mixer controls
> audio1 at uaudio0
> softraid0 at root
> root on wd0a swap on wd0b dump on wd0b
> auich0: measured ac97 link rate at 47765 Hz, will use 48000 Hz
> video0 detached
> uvideo0 detached
> audio1 detached
> uaudio0 detached
> uvideo0 at uhub0 port 5 configuration 1 interface 0 "Logitech QuickCam
> Pro 9000" rev 2.00/0.08 addr 2 video0 at uvideo0
> uaudio0 at uhub0 port 5 configuration 1 interface 2 "Logitech QuickCam
> Pro 9000" rev 2.00/0.08 addr 2 uaudio0: audio rev 1.00, 2 mixer controls
> audio1 at uaudio0
>
>
>
> --
> J.C. Roberts
>
--
jake...@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org
