What: /config/usb-gadget/gadget/functions/uvc.name
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Date: Dec 2014
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KernelVersion: 4.0
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Description: UVC function directory
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=================== =============================
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streaming_maxburst 0..15 (ss only)
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streaming_maxpacket 1..1023 (fs), 1..3072 (hs/ss)
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streaming_interval 1..16
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function_name string [32]
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=================== =============================
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What: /config/usb-gadget/gadget/functions/uvc.name/control
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Control descriptors
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All attributes read only:
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================ =============================
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bInterfaceNumber USB interface number for this
|
streaming interface
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================ =============================
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What: /config/usb-gadget/gadget/functions/uvc.name/control/class
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/class/ss
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Super speed control class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/class/fs
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Full speed control class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Terminal descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Output terminal descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output/default
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Default output terminal descriptors
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All attributes read only:
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============== =============================================
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iTerminal index of string descriptor
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bSourceID id of the terminal to which this terminal
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is connected
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bAssocTerminal id of the input terminal to which this output
|
terminal is associated
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wTerminalType terminal type
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bTerminalID a non-zero id of this terminal
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============== =============================================
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Camera terminal descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera/default
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Default camera terminal descriptors
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All attributes read only:
|
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======================== ====================================
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bmControls bitmap specifying which controls are
|
supported for the video stream
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wOcularFocalLength the value of Locular
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wObjectiveFocalLengthMax the value of Lmin
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wObjectiveFocalLengthMin the value of Lmax
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iTerminal index of string descriptor
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bAssocTerminal id of the output terminal to which
|
this terminal is connected
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wTerminalType terminal type
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bTerminalID a non-zero id of this terminal
|
======================== ====================================
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What: /config/usb-gadget/gadget/functions/uvc.name/control/processing
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Processing unit descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/processing/default
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Default processing unit descriptors
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All attributes read only:
|
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=============== ========================================
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iProcessing index of string descriptor
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bmControls bitmap specifying which controls are
|
supported for the video stream
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wMaxMultiplier maximum digital magnification x100
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bSourceID id of the terminal to which this unit is
|
connected
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bUnitID a non-zero id of this unit
|
=============== ========================================
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What: /config/usb-gadget/gadget/functions/uvc.name/control/header
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Control header descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/header/name
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Specific control header descriptors
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dwClockFrequency
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bcdUVC
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Streaming descriptors
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|
All attributes read only:
|
|
================ =============================
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bInterfaceNumber USB interface number for this
|
streaming interface
|
================ =============================
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class
|
Date: Dec 2014
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KernelVersion: 4.0
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Description: Streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/ss
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Super speed streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/hs
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Date: Dec 2014
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KernelVersion: 4.0
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Description: High speed streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/fs
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Full speed streaming class descriptors
|
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Color matching descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching/default
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Default color matching descriptors
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All attributes read only:
|
|
======================== ======================================
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bMatrixCoefficients matrix used to compute luma and
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chroma values from the color primaries
|
bTransferCharacteristics optoelectronic transfer
|
characteristic of the source picutre,
|
also called the gamma function
|
bColorPrimaries color primaries and the reference
|
white
|
======================== ======================================
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg
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Date: Dec 2014
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KernelVersion: 4.0
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Description: MJPEG format descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Specific MJPEG format descriptors
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|
All attributes read only,
|
except bmaControls and bDefaultFrameIndex:
|
|
=================== =====================================
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bFormatIndex unique id for this format descriptor;
|
only defined after parent header is
|
linked into the streaming class;
|
read-only
|
bmaControls this format's data for bmaControls in
|
the streaming header
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bmInterfaceFlags specifies interlace information,
|
read-only
|
bAspectRatioY the X dimension of the picture aspect
|
ratio, read-only
|
bAspectRatioX the Y dimension of the picture aspect
|
ratio, read-only
|
bmFlags characteristics of this format,
|
read-only
|
bDefaultFrameIndex optimum frame index for this stream
|
=================== =====================================
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name/name
|
Date: Dec 2014
|
KernelVersion: 4.0
|
Description: Specific MJPEG frame descriptors
|
|
========================= =====================================
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bFrameIndex unique id for this framedescriptor;
|
only defined after parent format is
|
linked into the streaming header;
|
read-only
|
dwFrameInterval indicates how frame interval can be
|
programmed; a number of values
|
separated by newline can be specified
|
dwDefaultFrameInterval the frame interval the device would
|
like to use as default
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dwMaxVideoFrameBufferSize the maximum number of bytes the
|
compressor will produce for a video
|
frame or still image
|
dwMaxBitRate the maximum bit rate at the shortest
|
frame interval in bps
|
dwMinBitRate the minimum bit rate at the longest
|
frame interval in bps
|
wHeight height of decoded bitmap frame in px
|
wWidth width of decoded bitmam frame in px
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bmCapabilities still image support, fixed frame-rate
|
support
|
========================= =====================================
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Uncompressed format descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name
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Date: Dec 2014
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KernelVersion: 4.0
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Description: Specific uncompressed format descriptors
|
|
================== =======================================
|
bFormatIndex unique id for this format descriptor;
|
only defined after parent header is
|
linked into the streaming class;
|
read-only
|
bmaControls this format's data for bmaControls in
|
the streaming header
|
bmInterfaceFlags specifies interlace information,
|
read-only
|
bAspectRatioY the X dimension of the picture aspect
|
ratio, read-only
|
bAspectRatioX the Y dimension of the picture aspect
|
ratio, read-only
|
bDefaultFrameIndex optimum frame index for this stream
|
bBitsPerPixel number of bits per pixel used to
|
specify color in the decoded video
|
frame
|
guidFormat globally unique id used to identify
|
stream-encoding format
|
================== =======================================
|
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name/name
|
Date: Dec 2014
|
KernelVersion: 4.0
|
Description: Specific uncompressed frame descriptors
|
|
========================= =====================================
|
bFrameIndex unique id for this framedescriptor;
|
only defined after parent format is
|
linked into the streaming header;
|
read-only
|
dwFrameInterval indicates how frame interval can be
|
programmed; a number of values
|
separated by newline can be specified
|
dwDefaultFrameInterval the frame interval the device would
|
like to use as default
|
dwMaxVideoFrameBufferSize the maximum number of bytes the
|
compressor will produce for a video
|
frame or still image
|
dwMaxBitRate the maximum bit rate at the shortest
|
frame interval in bps
|
dwMinBitRate the minimum bit rate at the longest
|
frame interval in bps
|
wHeight height of decoded bitmap frame in px
|
wWidth width of decoded bitmam frame in px
|
bmCapabilities still image support, fixed frame-rate
|
support
|
========================= =====================================
|
|
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header
|
Date: Dec 2014
|
KernelVersion: 4.0
|
Description: Streaming header descriptors
|
|
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header/name
|
Date: Dec 2014
|
KernelVersion: 4.0
|
Description: Specific streaming header descriptors
|
|
All attributes read only:
|
|
==================== =====================================
|
bTriggerUsage how the host software will respond to
|
a hardware trigger interrupt event
|
bTriggerSupport flag specifying if hardware
|
triggering is supported
|
bStillCaptureMethod method of still image caputre
|
supported
|
bTerminalLink id of the output terminal to which
|
the video endpoint of this interface
|
is connected
|
bmInfo capabilities of this video streaming
|
interface
|
==================== =====================================
|
|
What: /sys/class/udc/udc.name/device/gadget/video4linux/video.name/function_name
|
Date: May 2018
|
KernelVersion: 4.19
|
Description: UVC configfs function instance name
|
