[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [RFC PATCH 0/2] Add USB Video Class device emulation.
From: |
Natalia Portillo |
Subject: |
Re: [Qemu-devel] [RFC PATCH 0/2] Add USB Video Class device emulation. |
Date: |
Thu, 10 Jun 2010 19:47:19 +0100 |
Hi,
> Trying to guess the relevant descriptors:
>
> VideoStreaming Interface Descriptor:
> bLength 50
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 3
> bmCapabilities 0x00
> Still image unsupported
> wWidth 320
> wHeight 240
> dwMinBitRate 768000
> dwMaxBitRate 4608000
> dwMaxVideoFrameBufferSize 153600
> dwDefaultFrameInterval 333333
> bFrameIntervalType 6
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 400000
> dwFrameInterval( 2) 500000
> dwFrameInterval( 3) 666666
> dwFrameInterval( 4) 1000000
> dwFrameInterval( 5) 2000000
>
> 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))
Unless there is any FRAME_MJPEG in the descriptor, the camera is as now,
unsupported yet.
I'm working on supported cameras FRAME_UNCOMPRESSED.
>>
>>>
>>> Also, I tried a PWC camera which is not a V4L2_INPUT_TYPE_CAMERA and
>>> noticed that video_input_index is used uninitialized in usb_uvc_initfn
>> It's a webcam?
>> Could you give me more information?
>> Manufacturer, model, linux's module name.
>
> usb 7-1: new full speed USB device using uhci_hcd and address 3
> usb 7-1: New USB device found, idVendor=046d, idProduct=08b6
> usb 7-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> pwc: Logitech/Cisco VT Camera webcam detected.
The only thing I'm able to found about it is that the driver is Video4Linux 1.0
not 2.0.
Do you have manufacturer and model?
Do you have idea of that input type v4l2 defines for it?
May you give me SSH access to a machine with that cam installed to test and
implement?
Regards,
Natalia Portillo