USB Audio driver for AmigaOS4

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smarkusg

Re: Sterownik USB Audio dla AmigaOS4

Posted on: Yesterday 23:51 #41

Quite a regular

@balaton
It doesn't work on a real C-Media device when passed to QEMU PPC AOS4.
The result is the same as with the -device usb-audio option.
Someone with a real Pegasos II or AmigaOne needs to let us know if this driver works for them.
I haven't tested it on QEMU Linux PPC.

EDIT:
Yes, you're right, I checked on emaculation.com. USB audio doesn't work on macOS X, only on macOS 9 – my mistake, sorry for the incorrect information.
https://gitlab.com/qemu-project/qemu/-/work_items/446
https://www.emaculation.com/forum/viewtopic.php?p=81464#p81464

EDIT2:
I ran a little experiment based on what you wrote
I added your patch to QEMU (QEMU version 9)
https://lists.nongnu.org/archive/html/ ... vel/2026-02/msg02357.html


-device pci-ohci -device usb-audio,bus=usb-bus.2,buffer=512,debug=1 -audio alsa

It looks like this in ‘qtree’


bus: pci.1

      type PCI

      dev: pci-ohci, id ""

        masterbus = ""

        num-ports = 3 (0x3)

        firstport = 0 (0x0)

        addr = 06.0

        romfile = ""

        romsize = 4294967295 (0xffffffff)

        rombar = 1 (0x1)

        multifunction = false

        x-pcie-lnksta-dllla = true

        x-pcie-extcap-init = true

        failover_pair_id = ""

        acpi-index = 0 (0x0)

        x-pcie-err-unc-mask = true

        x-pcie-ari-nextfn-1 = false

        class USB controller, addr 00:06.0, pci id 106b:003f (sub 1af4:1100)

        bar 0: mem at 0x8428c000 [0x8428c0ff]

        bus: usb-bus.2

          type usb-bus

          dev: usb-audio, id ""

            audiodev = "audiodev0"

            debug = 1 (0x1)

            buffer = 512 (0x200)

            multi = false

            port = ""

            serial = ""

            msos-desc = true

            pcap = ""

            addr 2.2, port 1, speed 12, name QEMU USB Audio Interface, attached

Debug output from AOS4 (the label ‘usb-audio’ comes from the QEMU driver debug output)


[USB] INFO | "USB Fkt Init" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "USB Fkt Init" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

[USB] INFO | "USB Fkt Init" | "Init Fkt" | [fkt 0x6fdd7150] Fkt ("","","") initialized

usb-audio: control transaction: request 0x8006 value 0x0200 index 0x0000 length 0x0009

usb-audio: control transaction: request 0x8006 value 0x0200 index 0x0000 length 0x0071

usb-audio: control transaction: request 0x0009 value 0x0001 index 0x0000 length 0x0000

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "USB FD Starter" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "USB FD Starter" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

[USB] INFO | "USB FD Starter" | "Bind FD" | Trying FD "usbaudio.usbfd" v1.0 for Ifc 0x694A1880

[usbaudio.usbfd] USB Audio device attached, refreshing AHI modes

[USBAudio] libExpunge: OpenCnt=0

[USB] INFO | "USB FD Starter" | "Sys_EndInitialAttachmentPhase" | Initial USB Attachment Phase terminated

[USB] INFO | "USB FD Starter" | "Bind FD" | Trying FD "usbaudio.usbfd" v1.0 for Ifc 0x694A1740

[USB] INFO | "USB FD Starter" | "Bind FD" | FD "usbaudio.usbfd" did not support Ifc 0x694A1740

[USB] INFO | "USB FD Starter" | "Bind FD" | No driver found for fkt 0x6fdd7150/ifc 0x694a1740 {Class 0

....

USBAudio] AHIsub_AllocAudio: entry

[USBAudio] scan: waiting for USB stack full-boot...

[USBAudio] wait_fullboot: subscribed for STACKFULLBOOTED (0x6FE45530)

[USBAudio] wait_fullboot: timeout (stack already booted)

[USBAudio] scan: USB stack ready

[USBAudio] scan: opening libusb-1.library...

[USBAudio] scan: OpenLibrary returned 0x656AAD68

[USBAudio] libusb-1.library opened OK

[USBAudio] prefs: reading ENVARC:USBAudio.prefs

[USBAudio] prefs: added 46F4:0002 = "QEMU USB Audio"

[USBAudio] prefs: loaded 1 user device(s)

[USBAudio] scan_usb_audio_device: entry (scanned=0, num_devs=0)

[USBAudio] scan: calling libusb_get_device_list...

[libusb-1] ensure_usbsys_open: opening usbsys.device...

[libusb-1] ensure_usbsys_open: OpenDevice OK

[USBAudio] libusb_get_device_list: cnt=5, list=0x65CC5D88

[USBAudio] Device 0: VID=0x0000 PID=0x0000 Class=0x09

[USBAudio] Device 0: hub, skipping

[USBAudio] Device 1: VID=0x46F4 PID=0x0002 Class=0x00

[USBAudio]   Ifc 0 Alt 0: Class=0x09 Sub=0x00 NumEP=1

[USBAudio]   Ifc 0 Alt 0: Class=0x01 Sub=0x01 NumEP=0

[USBAudio]   => Audio Control found! Ifc=0

[USBAudio]   Ifc 0 Alt 0: Class=0x09 Sub=0x00 NumEP=1

[USBAudio]   Ifc 0 Alt 0: Class=0x08 Sub=0x06 NumEP=2

[USBAudio]   Ifc 0 Alt 0: Class=0x09 Sub=0x00 NumEP=1

[USBAudio]   Ifc 1 Alt 0: Class=0x01 Sub=0x02 NumEP=0

[USBAudio]   => Audio Streaming (playback) found! Ifc=1

[libusb1] libusb_open: rawIfc=0x694A1740 lad_Interface=0x654B7070 rawFunc=0x6FDD7150

usb-audio: control transaction: request 0x8006 value 0x0200 index 0x0000 length 0x0009

usb-audio: control transaction: request 0x8006 value 0x0200 index 0x0000 length 0x0071

[USBAudio] enumerate: config total_len=113 for 46F4:0002

[USBAudio] enumerate: best play so far: 2ch alt=1 ep=0x01 maxpkt=192

[USBAudio] enumerate: output #0 "Front" alt=1 ep=0x01 ch=2 offset=0 maxpkt=192

[USBAudio] enumerate: output FU ID=2 (USB Streaming)

[USBAudio] enumerate: 1 outputs, 0 inputs, default out=#0

[USBAudio] USB Audio device #0 found: "QEMU USB Audio"

[USBAudio]   VID=0x46F4 PID=0x0002 Iface=1 Alt=1

[USBAudio]   EP=0x01 MaxPkt=192 2ch/16bit

[USBAudio] Device 2: VID=0x0000 PID=0x0000 Class=0x09

[USBAudio] Device 2: hub, skipping

[USBAudio] Device 3: VID=0x46F4 PID=0x0001 Class=0x00

[USBAudio]   Ifc 0 Alt 0: Class=0x09 Sub=0x00 NumEP=1

[USBAudio]   Ifc 0 Alt 0: Class=0x01 Sub=0x01 NumEP=0

[USBAudio]   => Audio Control found! Ifc=0

[USBAudio]   Ifc 0 Alt 0: Class=0x09 Sub=0x00 NumEP=1

[USBAudio]   Ifc 0 Alt 0: Class=0x08 Sub=0x06 NumEP=2

[USBAudio]   Ifc 0 Alt 0: Class=0x09 Sub=0x00 NumEP=1

[USBAudio] Device 3: no Audio Streaming interface

[USBAudio] Device 4: VID=0x0000 PID=0x0000 Class=0x09

[USBAudio] Device 4: hub, skipping

[USBAudio] scan_usb_audio_device: 1 device(s) found, default="QEMU USB Audio"

[USBAudio] flat output #0: "Front"

[USBAudio] scan: 1 total outputs, 0 total inputs

[USBAudio] AHIsub_AllocAudio: OK, VID=0x46F4 PID=0x0002

[USBAudio] AHIsub_Start: Flags=0x00000001

[USBAudio] AHIsub_Stop: Flags=0x00000001

[libusb1] libusb_open: rawIfc=0x694A1740 lad_Interface=0x654B7070 rawFunc=0x6FDD7150

[USBAudio] Start: open_device VID=0x46F4 PID=0x0002 => handle=0x6718B6E8

[USBAudio] discover_usb_audio_details: entry

[USBAudio] discover: output mode #0: Ifc=1 Alt=1 EP=0x01 MaxPkt=192 Ch=2 Bits=16

[USBAudio] discover: Output FU ID=2 AC Ifc=0

[USBAudio] discover: querying output volume range...

usb-audio: control transaction: request 0xa182 value 0x0200 index 0x0200 length 0x0002

usb-audio: fail: get control

usb-audio: failed control transaction: request 0xa182 value 0x0200 index 0x0200 length 0x0002

usb-audio: control transaction: request 0x0201 value 0x0000 index 0x0000 length 0x0000

usb-audio: failed control transaction: request 0x0201 value 0x0000 index 0x0000 length 0x0000

[USBAudio] discover: GET_MIN volume failed (-9), disabling volume queries

[USBAudio] discover: no input Feature Unit, input gain not available

[USBAudio] Start: after discover => EP=0x01 Ifc=1 Alt=1 MaxPkt=192 Ch=2 Sub=2

[libusb1] claim_interface(1): rawIfc=0x694A1740 lad_Interface=0x654B7070

[libusb1] claim_interface: USBGetEndPoint(0x01) after claim(alt=0) => 0x00000000

[USBAudio] Start: claim_interface(1) => 0

[USBAudio] Start: calling set_alt_setting(1, 1)...

[libusb1] set_alt_setting(1,1): lad_Interface=0x654B7070 rawIfc=0x694A1740

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "Sound" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

usb-audio: control transaction: request 0x010b value 0x0001 index 0x0001 length 0x0000

usb-audio: set interface 1

[libusb1] set_alt_setting: USBIntSetAltSettingA stat=1

[libusb1] set_alt_setting: declaiming for re-claim...

[libusb1] set_alt_setting: rawIfc after SetAlt: ifc=1 alt=1 numEP=1

[libusb1] set_alt_setting: re-claim rawIfc=0x694A1740 => lad_Interface=0x654B7070

[libusb1] set_alt_setting: USBGetEndPoint(NULL, ifc, 0x01)=0x657EA7B0

[libusb1] set_alt_setting: FOUND EP OUT 0x00 => 0x6FF45910

[libusb1] set_alt_setting: FOUND EP OUT 0x01 => 0x657EA7B0

[libusb1] set_alt_setting: brute-force scan complete

[USBAudio] Start: set_alt_setting => 0

[USBAudio] Start: setting sample rate 11025 Hz on EP 0x01

usb-audio: control transaction: request 0x2201 value 0x0100 index 0x0001 length 0x0003

usb-audio: failed control transaction: request 0x2201 value 0x0100 index 0x0001 length 0x0003

usb-audio: control transaction: request 0x0201 value 0x0000 index 0x0000 length 0x0000

usb-audio: failed control transaction: request 0x0201 value 0x0000 index 0x0000 length 0x0000

[USBAudio] Start: SET_CUR sample rate failed: -9

[USBAudio] Start: waiting for slave to signal alive...

[USBAudio] PlaySlave: entry, AudioCtrl=0x656AA440

[USBAudio] PlaySlave: EP=0x01 MaxPkt=192 Channels=2 SubSz=2

[USBAudio] PlaySlave: got UsbEndPoint 0x657EA7B0 for EP 0x01

[USBAudio] PlaySlave: cachedFrames=2 maxXferSize=192 xfersPerFrame=1

[USBAudio] PlaySlave: frameSize=4 baseSamples=11 fracNum=25/1000 framesPerIOR=8 iorCount=2

[USBAudio] PlaySlave: allocated 2 IORequests (1536 bytes, 8 subXfers each)

[USBAudio] PlaySlave: first mix produced 880 bytes

[USBAudio] PlaySlave: all 2 IORequests launched

[USBAudio] Start: slave alive, playback running

[USBAudio] AHIsub_Start: OK

Isochronous transfer had error 0x8

[USBAudio] AHIsub_Stop: Flags=0x00000001

[USBAudio] PlaySlave: exiting (loops=200 xfer_errors=0)

[USBAudio] Stop: waiting 500ms for USB stack to settle...

[USBAudio] Stop: set_alt_setting(1, 0)...

[libusb1] set_alt_setting(1,0): lad_Interface=0x654B7070 rawIfc=0x694A1740

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "Sound" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

usb-audio: control transaction: request 0x010b value 0x0000 index 0x0001 length 0x0000

usb-audio: set interface 0

[libusb1] set_alt_setting: USBIntSetAltSettingA stat=1

[libusb1] set_alt_setting: declaiming for re-claim...

[libusb1] set_alt_setting: rawIfc after SetAlt: ifc=1 alt=0 numEP=0

[libusb1] set_alt_setting: re-claim rawIfc=0x694A1740 => lad_Interface=0x654B7070

[libusb1] set_alt_setting: USBGetEndPoint(NULL, ifc, 0x01)=0x00000000

[libusb1] set_alt_setting: FOUND EP OUT 0x00 => 0x6FF45910

[libusb1] set_alt_setting: brute-force scan complete

[USBAudio] Stop: release_interface(1)...

[USBAudio] Stop: closing device...

[USBAudio] Stop: device closed OK

[USBAudio] AHIsub_Stop: Flags=0x00000003

[USBAudio] Stop: stopping recording

[USBAudio] AHIsub_FreeAudio

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x80000073 Arg=0 Def=1

[USBAudio] GetAttr: Attr=0x8000006F Arg=0 Def=128

[USBAudio] GetAttr: Attr=0x80000088 Arg=0 Def=0

[USBAudio] GetAttr: Attr=0x8000008B Arg=0 Def=1

[USBAudio] GetAttr: Attr=0x80000082 Arg=0 Def=0

[USBAudio] GetAttr: Attr=0x80000083 Arg=0 Def=0

[USBAudio] GetAttr: Attr=0x80000084 Arg=0 Def=65536

[USBAudio] GetAttr: Attr=0x80000085 Arg=0 Def=65536

[USBAudio] GetAttr: Attr=0x80000086 Arg=0 Def=65536

[USBAudio] GetAttr: Attr=0x80000087 Arg=0 Def=65536

[USBAudio] GetAttr: Attr=0x8000007C Arg=48000 Def=0

[USBAudio] GetAttr: Attr=0x8000007D Arg=0 Def=0

[USBAudio] GetAttr: Attr=0x80000076 Arg=0 Def=1721506440

[USBAudio] GetAttr: Attr=0x80000077 Arg=0 Def=1721506440

[USBAudio] GetAttr: Attr=0x80000078 Arg=0 Def=1721506440

[USBAudio] GetAttr: Attr=0x80000072 Arg=0 Def=0

[USBAudio] GetAttr: Attr=0x80000081 Arg=0 Def=0

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x80000086 Arg=0 Def=65536

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x80000082 Arg=0 Def=0

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x80000084 Arg=0 Def=65536

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x80000075 Arg=1 Def=0

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x8000008A Arg=-1 Def=1766412296

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x8000008D Arg=0 Def=1766412296

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] GetAttr: Attr=0x8000006E Arg=0 Def=0

[USBAudio] libOpen: version=2, our VERSION=2

[USBAudio] libOpen: OK, OpenCnt=1

[USBAudio] AHIsub_AllocAudio: entry

[USBAudio] AHIsub_AllocAudio: OK, VID=0x46F4 PID=0x0002

[USBAudio] AHIsub_Start: Flags=0x00000001

[USBAudio] AHIsub_Stop: Flags=0x00000001

[libusb1] libusb_open: rawIfc=0x694A1740 lad_Interface=0x6FE43D60 rawFunc=0x6FDD7150

[USBAudio] Start: open_device VID=0x46F4 PID=0x0002 => handle=0x66599F98

[USBAudio] discover_usb_audio_details: entry

[USBAudio] discover: output mode #0: Ifc=1 Alt=1 EP=0x01 MaxPkt=192 Ch=2 Bits=16

[USBAudio] discover: Output FU ID=2 AC Ifc=0

[USBAudio] discover: skipping volume queries (previously failed)

[USBAudio] discover: no input Feature Unit, input gain not available

[USBAudio] Start: after discover => EP=0x01 Ifc=1 Alt=1 MaxPkt=192 Ch=2 Sub=2

[libusb1] claim_interface(1): rawIfc=0x694A1740 lad_Interface=0x6FE43D60

[libusb1] claim_interface: USBGetEndPoint(0x01) after claim(alt=0) => 0x00000000

[USBAudio] Start: claim_interface(1) => 0

[USBAudio] Start: calling set_alt_setting(1, 1)...

[libusb1] set_alt_setting(1,1): lad_Interface=0x6FE43D60 rawIfc=0x694A1740

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "Sound" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

usb-audio: control transaction: request 0x010b value 0x0001 index 0x0001 length 0x0000

usb-audio: set interface 1

[libusb1] set_alt_setting: USBIntSetAltSettingA stat=1

[libusb1] set_alt_setting: declaiming for re-claim...

[libusb1] set_alt_setting: rawIfc after SetAlt: ifc=1 alt=1 numEP=1

[libusb1] set_alt_setting: re-claim rawIfc=0x694A1740 => lad_Interface=0x6FE43D60

[libusb1] set_alt_setting: USBGetEndPoint(NULL, ifc, 0x01)=0x66264E90

[libusb1] set_alt_setting: FOUND EP OUT 0x00 => 0x6FF45910

[libusb1] set_alt_setting: FOUND EP OUT 0x01 => 0x66264E90

[libusb1] set_alt_setting: brute-force scan complete

[USBAudio] Start: set_alt_setting => 0

[USBAudio] Start: setting sample rate 11025 Hz on EP 0x01

usb-audio: control transaction: request 0x2201 value 0x0100 index 0x0001 length 0x0003

usb-audio: failed control transaction: request 0x2201 value 0x0100 index 0x0001 length 0x0003

usb-audio: control transaction: request 0x0201 value 0x0000 index 0x0000 length 0x0000

usb-audio: failed control transaction: request 0x0201 value 0x0000 index 0x0000 length 0x0000

[USBAudio] Start: SET_CUR sample rate failed: -9

[USBAudio] Start: waiting for slave to signal alive...

[USBAudio] PlaySlave: entry, AudioCtrl=0x69452580

[USBAudio] PlaySlave: EP=0x01 MaxPkt=192 Channels=2 SubSz=2

[USBAudio] PlaySlave: got UsbEndPoint 0x66264E90 for EP 0x01

[USBAudio] PlaySlave: cachedFrames=2 maxXferSize=192 xfersPerFrame=1

[USBAudio] PlaySlave: frameSize=4 baseSamples=11 fracNum=25/1000 framesPerIOR=8 iorCount=2

[USBAudio] PlaySlave: allocated 2 IORequests (1536 bytes, 8 subXfers each)

[USBAudio] PlaySlave: first mix produced 880 bytes

[USBAudio] PlaySlave: all 2 IORequests launched

[USBAudio] Start: slave alive, playback running

[USBAudio] AHIsub_Start: OK

[USBAudio] AHIsub_Stop: Flags=0x00000001

[USBAudio] PlaySlave: exiting (loops=190 xfer_errors=0)

[USBAudio] Stop: waiting 500ms for USB stack to settle...

[USBAudio] Stop: set_alt_setting(1, 0)...

[libusb1] set_alt_setting(1,0): lad_Interface=0x6FE43D60 rawIfc=0x694A1740

usb-audio: control transaction: request 0x8006 value 0x0300 index 0x0000 length 0x00ff

[USB] INFO | "Sound" | "SetFktLanguageID" | [fkt 0x6fdd7150] Fkt has no languages

usb-audio: control transaction: request 0x010b value 0x0000 index 0x0001 length 0x0000

usb-audio: set interface 0

[libusb1] set_alt_setting: USBIntSetAltSettingA stat=1

[libusb1] set_alt_setting: declaiming for re-claim...

[libusb1] set_alt_setting: rawIfc after SetAlt: ifc=1 alt=0 numEP=0

[libusb1] set_alt_setting: re-claim rawIfc=0x694A1740 => lad_Interface=0x6FE43D60

[libusb1] set_alt_setting: USBGetEndPoint(NULL, ifc, 0x01)=0x00000000

[libusb1] set_alt_setting: FOUND EP OUT 0x00 => 0x6FF45910

[libusb1] set_alt_setting: brute-force scan complete

[USBAudio] Stop: release_interface(1)...

[USBAudio] Stop: closing device...

[USBAudio] Stop: device closed OK

[USBAudio] AHIsub_Stop: Flags=0x00000003

[USBAudio] Stop: stopping recording

[USBAudio] AHIsub_FreeAudio

Something’s alive and kicking – it’s a bit of a nightmare, but I can see the driver is communicating with the USB audio and nothing’s freezing up. I don’t think I can hear any sound, though.
It’s just an experiment, of course

EDIT3:
‘device usb-audio’ works under QEMU Linux PPC (slight audio distortion)
screen - > https://ibb.co/JRxmbnp9
screen (ohci) -> https://ibb.co/0jXH2H7H
screen (so everything’s in one place) virtio net, that works too -> https://ibb.co/NdWWt0kb

Edited by smarkusg on 2026/3/19 7:34:07
Edited by smarkusg on 2026/3/19 11:31:36
Edited by smarkusg on 2026/3/19 13:42:59
Edited by smarkusg on 2026/3/19 13:43:29
Edited by smarkusg on 2026/3/19 13:59:43
Edited by smarkusg on 2026/3/19 14:31:39

afxgroup

Re: Sterownik USB Audio dla AmigaOS4

Posted on: Today 16:25 #42

Amigans Defender

@smarkusg

It seems correct. The only problem seems:

Start: SET_CUR sample rate failed: -9

But this is not a qemu problem.
I will investigate

i'm really tired...

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