VAD Laplace
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Webcam VAD (Vicious and Divine) Laplace
I recently bought a nice new webcam. The webcam is called VAD (Vicious and Divine) Laplace from the manufacturer Speed Link.
I thought I can do some helping to get a driver developed for this cam. What I can offer is USB sniffing on a certain OS (no MAC drivers available too so there is not much choice). I already know that the cam is not UVC compliant.
Currently I'm using Mandriva 2009.1 distribution with distribution kernel 2.6.29.1-desktop-4mnb. Self-made realtime kernel based on Vanilla 2.6.29.2 is available too (but untested).
Basic Hardware Specs of the Webcam
- 2 MP Photo, 1.3 MP Video resolution
- USB 2.0 Interface (USB 1.1 supported)
- 3x digital zoom (button)
- Flash (switch on/off via button)
- Night illumination (switch on/off via button)
- Noise-suppressing microphone (so there is already a filter ...)
- Mute button
- Z-fold positioning
- 0.6m cable at the Webcam itself
- 1.4m extra USB extension cable
- max. video resolution 1280x960/15fps, 640x480/30fps
- max. photo resolution 1600x1200
- available in white (1ae7:9003) and black (1ae7:9004)
Advanced Hardware Specs of the Webcam
- Not UVC Compliant
- Main chip (large) - See also Pictures below
EMPIA EM2765 6Z523-500 0711-118G
- Other chips (small)
IDT STAC9753AX MPG E10745Z UT10953
- Image sensor (from USB-logs)
OV2640 (http://read.pudn.com/downloads128/doc/543891/OV2640_spec.pdf) Product ID: 0x2642 (reg 0x0A, OxOB)
- Output from lsusb (and /proc/bus/usb/devices)
Bus 006 Device 008: ID 1ae7:9003
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1ae7
idProduct 0x9003
bcdDevice 2.03
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 126
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 40
bInCollection 1
baInterfaceNr( 0) 1
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0000
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 2
bSourceID 1
bControlSize 1
bmaControls( 0) 0x03
Mute
Volume
bmaControls( 1) 0x00
bmaControls( 2) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 2
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bDelay 1 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 8000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x00c8 1x 200 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 234
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
/proc/usb/devices:
T: Bus=01 Lev=01 Prnt=01 Port=04 Cnt=02 Dev#= 16 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1ae7 ProdID=9003 Rev= 2.03 C:* #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio I:* If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio I: If#= 1 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio E: Ad=83(I) Atr=01(Isoc) MxPS= 200 Ivl=1ms I:* If#= 3 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ea Prot=00 Driver=(none) E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
/proc/asound/cards:
1 [U0x1ae70x9003 ]: USB-Audio - USB Device 0x1ae7:0x9003
USB Device 0x1ae7:0x9003 at usb-0000:00:13.5-5, high speed
/proc/asound/devices:
32: [ 1] : control 33: : timer 56: [ 1- 0]: digital audio capture
Pictures
All pictures in larger size can be found on this page: http://s42.photobucket.com/albums/e344/suamor/webcam_vad Copyright (C) Reinhard Katzmann 2009. Distributed under Creative Common License ca. by is optional but wished (to make it easier for inclusion in mail (mailing list) and forums).
Tools for testing
- mplayer/mencoder
- USB sniffing tools from http://www.linux-usb.org/ like usb snoopy (I don't have access to HW USB sniffers)