Hi,
The following device used to work with Linux, but has stopped working.
I'm currently using Linux-5.13.rc2.
When I open /dev/video0 I see that the isochronous endpoint gets going,
but only 12 bytes is received for each frame:
frame[116] READ 12 bytes
0000 0C 8C 00 00 00 00 76 11 76 1C A3 02 -- -- -- -- |......v.v... |
frame[117] READ 12 bytes
0000 0C 8C 00 00 00 00 C2 2E 76 1C A3 02 -- -- -- -- |........v... |
frame[118] READ 12 bytes
0000 0C 8C 00 00 00 00 10 4C 76 1C A3 02 -- -- -- -- |.......Lv... |
frame[119] READ 12 bytes
0000 0C 8C 00 00 00 00 5C 69 76 1C A3 02 -- -- -- -- |......\iv... |
frame[120] READ 12 bytes
0000 0C 8C 00 00 00 00 A8 86 76 1C A4 02 -- -- -- -- |........v... |
frame[121] READ 12 bytes
0000 0C 8C 00 00 00 00 F4 A3 76 1C A4 02 -- -- -- -- |........v... |
frame[122] READ 12 bytes
0000 0C 8C 00 00 00 00 42 C1 76 1C A4 02 -- -- -- -- |......B.v... |
frame[123] READ 12 bytes
0000 0C 8C 00 00 00 00 8E DE 76 1C A4 02 -- -- -- -- |........v... |
frame[124] READ 12 bytes
0000 0C 8C 00 00 00 00 DA FB 76 1C A4 02 -- -- -- -- |........v... |
frame[125] READ 12 bytes
0000 0C 8C 00 00 00 00 26 19 77 1C A4 02 -- -- -- -- |......&.w... |
frame[126] READ 12 bytes
0000 0C 8C 00 00 00 00 72 36 77 1C A4 02 -- -- -- -- |......r6w... |
frame[127] READ 12 bytes
0000 0C 8C 00 00 00 00 BE 53 77 1C A4 02 -- -- -- -- |.......Sw... |
Works fine with UVC driver in MacOSX, in between.
I suspect the device is missing some control endpoint command to
activate the stream. Maybe someone here can help identify the problem or
give some pointers where to look in the code.
The only error I see from the kernel is this:
webcamd 7520 - - ERR: : Failed to query (GET_INFO) UVC control 4 on unit
1: -32 (exp. 1).
Here is the output from lsusb (FreeBSD):
Bus /dev/usb Device /dev/ugen0.4: ID 05e3:f12a Genesys Logic, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x05e3 Genesys Logic, Inc.
idProduct 0xf12a
bcdDevice 6.16
iManufacturer 0
iProduct 1 USB2.0 Digital Camera
iSerial 1 USB2.0 Digital Camera
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 425
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 200mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 1 USB2.0 Digital Camera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 1 USB2.0 Digital Camera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 105
dwClockFrequency 60.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 2
iTerminal 0
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 2
guidExtensionCode {0b365d5e-5fe4-8145-9b0b-374669ba05d4}
bNumControl 16
bNrPins 1
baSourceID( 0) 5
bControlSize 2
bmControls( 0) 0xff
bmControls( 1) 0x00
iExtension 0
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 5
guidExtensionCode {03dfdaec-e38f-274d-893b-a18d25aeee09}
bNumControl 16
bNrPins 1
baSourceID( 0) 3
bControlSize 2
bmControls( 0) 0xff
bmControls( 1) 0x03
iExtension 0
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x00000008
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 3
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000177f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
White Balance Temperature
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x e
NTSC - 525/60
PAL - 625/50
SECAM - 625/50
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0017 1x 23 bytes
bInterval 6
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
VideoStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 1
wTotalLength 257
bEndPointAddress 129
bmInfo 0
bTerminalLink 4
bStillCaptureMethod 2
bTriggerSupport 1
bTriggerUsage 1
bControlSize 1
bmaControls( 0) 27
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 6
guidFormat
{59555932-0000-1000-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 15360000
dwMaxBitRate 15360000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 160
wHeight 120
dwMinBitRate 960000
dwMaxBitRate 960000
dwMaxVideoFrameBufferSize 38400
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 176
wHeight 144
dwMinBitRate 1267200
dwMaxBitRate 1267200
dwMaxVideoFrameBufferSize 50688
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 320
wHeight 240
dwMinBitRate 3840000
dwMaxBitRate 3840000
dwMaxVideoFrameBufferSize 153600
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 352
wHeight 288
dwMinBitRate 5068800
dwMaxBitRate 5068800
dwMaxVideoFrameBufferSize 202752
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 15360000
dwMaxBitRate 15360000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0
bNumImageSizePatterns 6
wWidth( 0) 640
wHeight( 0) 480
wWidth( 1) 160
wHeight( 1) 120
wWidth( 2) 176
wHeight( 2) 144
wWidth( 3) 320
wHeight( 3) 240
wWidth( 4) 352
wHeight( 4) 288
wWidth( 5) 640
wHeight( 5) 480
bNumCompressionPatterns 6
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x1400 3x 1024 bytes
bInterval 1
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
--HPS
