Hello all,
On 15-May-00 Thomas Sailer wrote:
> "Nemosoft Unv." wrote:
>
>> Can you be more specific on what's wrong with find_format? Maybe I
>> overlooked, but it seems the only place to insert the samplerate.
>
> Why should it be taking into account the samplerate? Does
> your device really have multiple entries with the same format
> but different sampling rate ranges? if so then your device descriptor
> looks cruelly wrong.
Yes. What's wrong with that? The cams have a number of alternate interfaces
with the low rate and high rate being equal, so you have a set of fixed
samplerates, not a range. I suppose this Dallas chip has only a few
alternate interfaces with a few different formats, and a large range for the
samplerate?
> Also, some apps ask for sampling rates the device cannot do.
> The device driver is expected to round this to the nearest supported
> rate. Your patch badly breaks this (making the driver report failure).
Well, I had it the other way around: it would ask for a samplerate, and get
back something it didn't ask for at all :(
Nevertheless, rounding to the nearest value sounds OK.
> Also, you may choose mono, even though the device can do stereo
> and the app asked for stereo. Listening to MP3 in mono just isn't fun.
That's probably just a programming error on my part. Should be fixable.
>> No, it makes the Philips cams work :(
>
> Yeah, just how common is the stupid philips cam compared to the
> philips and Dallas DAC's?
Excuse me? I've been programming my ass off for weeks to get these things
working, and when it comes to obscure hardware support, Linux has a far
better reputation than most other OSes. So yeah, just scorch me for posting
a patch to linux-usb@, which has been sitting in the 2.3.* kernels since the
end of March, that allow these "stupid", "obscure" webcams to work, but
unfortunately breaks something and forces you to listen to your MP3's in
mono. Gosh, shall I call your mommy to give you a hug?
[Note: the above paragraph should obviously be read with a bit of
tongue-in-cheek sarcasm... I know I'm not infallable; I make mistakes,
with programming and otherwise. Telling me that is OK. But don't yell at
me for making a mistake, and certainly don't tell me you consider
the device I've spent a lot of time on, inferior to your own and therefor
not worth supporting/bugfixing.
]
> Please send me the decriptors of your devices with lsusb,
> the attached descriptor dumps are quite useless...
Unfortunately lsusb isn't much help either: it says it can't read the
descriptor with 'an unkown error 515'. This is with usbutils 0.5 on a 2.3.51
kernel. It uses ioctl() calls that the current USB layer doesn't have at
all, it seems.
So the dumps (which I painfully expanded and interpreted myself) are the
best I can offer at the moment.
>> Stop! You _have_ to take sampling rate into account. Matching only on the
>> samplesize (8 vs. 16) bit and stereo/mono will not work; the routine as
>> it
>> was would simply take the first alternate interface that would match
>> these 2
>> parameters, and disregard samplerate altogether.
>
> Yes, and that's intended and correct, unless some device has really
> badly broken device descriptors.
Then again I ask: how do you set the samplerate? I may have overlooked, but
other than matching the bits and channels, there wasn't much related to
samplerate. I think it's just how you interpret the USB spec; the
descriptors are valid IMO.
Anyway, I saw your patch appearing on the list, I'll have a look and see
if it works. Attached are a dump of proc/bus/usb/devices and lsusb.
- Nemosoft
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Bus 001 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Language IDs: none (cannot get string descriptor)
Bus 001 Device 002: ID 058f:9215 Alcor Micro, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x058f Alcor Micro, Inc.
idProduct 0x9215
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 0
bNumConfigurations 1
Language IDs: none (cannot get string descriptor)
Bus 001 Device 005: ID 0471:0308 Philips
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0471 Philips
idProduct 0x0308
bcdDevice 0.05
iManufacturer 0
iProduct 0
iSerial 1
bNumConfigurations 1
Language IDs: none (cannot get string descriptor)
Bus 001 Device 003: ID 0553:0002 VLSI Vision Ltd. CPiA Camera
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0553 VLSI Vision Ltd.
idProduct 0x0002 CPiA Camera
bcdDevice 1.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Language IDs: none (cannot get string descriptor)
Bus 001 Device 004: ID 0471:0302 Philips
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0471 Philips
idProduct 0x0302
bcdDevice 0.05
iManufacturer 0
iProduct 0
iSerial 1
bNumConfigurations 1
Language IDs: none (cannot get string descriptor)
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 28/900 us ( 3%), #Int= 2, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 4
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=058f ProdID=9215 Rev= 1.00
S: Manufacturer=ALCOR MICRO INC
S: Product=AU9814
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms
T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0471 ProdID=0308 Rev= 0.05
S: SerialNumber=020F020F00000478
C:* #Ifs= 3 Cfg#= 1 Atr=a0 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 196 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 292 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 448 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 592 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 704 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 776 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 840 Ivl= 1ms
I: If#= 0 Alt= 8 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 896 Ivl= 1ms
I: If#= 0 Alt= 9 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=100ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 960 Ivl= 1ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=audio
I: If#= 2 Alt= 0 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 2 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 90 Ivl= 1ms
I: If#= 2 Alt= 2 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 46 Ivl= 1ms
I: If#= 2 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 25 Ivl= 1ms
I: If#= 2 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 16 Ivl= 1ms
T: Bus=01 Lev=02 Prnt=02 Port=02 Cnt=02 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0553 ProdID=0002 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=400mA
I: If#= 1 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=cpia
E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 1 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=cpia
E: Ad=81(I) Atr=01(Isoc) MxPS= 448 Ivl= 1ms
I: If#= 1 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=cpia
E: Ad=81(I) Atr=01(Isoc) MxPS= 704 Ivl= 1ms
I: If#= 1 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=cpia
E: Ad=81(I) Atr=01(Isoc) MxPS= 960 Ivl= 1ms
T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=03 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0471 ProdID=0302 Rev= 0.05
S: SerialNumber=000A0000
C:* #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 0 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 942 Ivl= 1ms
I: If#= 0 Alt= 2 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 800 Ivl= 1ms
I: If#= 0 Alt= 3 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 700 Ivl= 1ms
I: If#= 0 Alt= 4 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 600 Ivl= 1ms
I: If#= 0 Alt= 5 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 500 Ivl= 1ms
I: If#= 0 Alt= 6 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 400 Ivl= 1ms
I: If#= 0 Alt= 7 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 300 Ivl= 1ms
I: If#= 0 Alt= 8 #EPs= 2 Cls=0a(data ) Sub=ff Prot=00 Driver=Philips webcam
E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
E: Ad=84(I) Atr=01(Isoc) MxPS= 200 Ivl= 1ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=audio
I: If#= 2 Alt= 0 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 0 Ivl= 1ms
I: If#= 2 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 50 Ivl= 1ms
I: If#= 2 Alt= 2 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 98 Ivl= 1ms
I: If#= 2 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 144 Ivl= 1ms
I: If#= 2 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 47 Ivl= 1ms
I: If#= 2 Alt= 5 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 90 Ivl= 1ms
I: If#= 2 Alt= 6 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 134 Ivl= 1ms
I: If#= 2 Alt= 7 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 34 Ivl= 1ms
I: If#= 2 Alt= 8 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 66 Ivl= 1ms
I: If#= 2 Alt= 9 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 98 Ivl= 1ms
I: If#= 2 Alt=10 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 26 Ivl= 1ms
I: If#= 2 Alt=11 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 50 Ivl= 1ms
I: If#= 2 Alt=12 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 74 Ivl= 1ms
I: If#= 2 Alt=13 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 24 Ivl= 1ms
I: If#= 2 Alt=14 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 46 Ivl= 1ms
I: If#= 2 Alt=15 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 68 Ivl= 1ms
I: If#= 2 Alt=16 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 18 Ivl= 1ms
I: If#= 2 Alt=17 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 34 Ivl= 1ms
I: If#= 2 Alt=18 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio
E: Ad=85(I) Atr=05(Isoc) MxPS= 50 Ivl= 1ms
(truncated)
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