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Does Win8 style app support UVC Still Capture Method 2 or 3 ?

    Question

  • My camera support UVC Still Capture Method 2.

     ===>Endpoint Descriptor<===
    bLength:                           0x07
    bDescriptorType:                   0x05
    bEndpointAddress:                  0x83  -> Direction: IN - EndpointID: 3
    bmAttributes:                      0x03  -> Interrupt Transfer Type
    wMaxPacketSize:                  0x0008 = 1 transactions per microframe, 0x08 max bytes
    bInterval:                         0x10

              ===>Endpoint Descriptor<===
    bLength:                           0x07
    bDescriptorType:                   0x05
    bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
    bmAttributes:                      0x02  -> Bulk Transfer Type
    wMaxPacketSize:                  0x0200 = 0x200 max bytes
    bInterval:                         0x00

    ===>Video Class-Specific VS Video Input Header Descriptor<===
    bLength:                           0x0E
    bDescriptorType:                   0x24
    bDescriptorSubtype:                0x01
    bNumFormats:                       0x01
    wTotalLength:                    0x008D  -> Validated
    bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
    bmInfo:                            0x00  -> Dynamic Format Change not Supported
    bTerminalLink:                     0x03
    bStillCaptureMethod:               0x02  -> Still Capture Method 2
    bTriggerSupport:                   0x00  -> No Hardware Triggering Support
    bTriggerUsage:                     0x00
    bControlSize:                      0x01
    Video Payload Format 1             0x04
         D00 = 0   no -  Key Frame Rate
         D01 = 0   no -  P Frame Rate
         D02 = 1  yes -  Compression Quality
         D03 = 0   no -  Compression Window Size
         D04 = 0   no -  Generate Key Frame
         D05 = 0   no -  Update Frame Segment
         D06 = 0   no -  Reserved
         D07 = 0   no -  Reserved

    Using GraphEdt.exe to render Capture and Still Pin, I can get full resultion (16MP) still image.

    But Win8 style app only can only get 1920x1080 still image. It treat still pin as capture pin.

    How to get full resoultion (16MP) still image in Win8 Style App ?


    maujy

    • Moved by Jesse Jiang Friday, October 26, 2012 3:27 AM (From:Building Windows Store apps with C++ )
    Thursday, October 25, 2012 4:13 PM

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