UVC调试笔记
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UVC Windows下UVC摄像头数据分析

2020-10-23 576 0
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这里我们分析一款UVC摄像头来进行数据分析。

  • 环境:win10 x64
  • 工具:bushound,usbviewer

将摄像头插入PC后,打开usbviewr工具,可以看到关于此摄像头的相关信息。
可以看到,这个摄像头其实是一个USB复合设备,所以其对应的系统驱动为USBCCGP,然后再由USB复合设备驱动枚举出2个设备,一个为摄像头(UVC设备),一个为音频输入设备(UAV设备)。
1603165888192

描述符分析

由于USBViewer这个工具是按USB端口来显示设备信息的,所以这里显示的是复合设备的信息,当然这里也包括摄像头和音频输入设备。这里我们只分析UVC摄像头的描述符。
USBViewer

设备描述符

设备描述符和USB设备描述符的数据格式一致,各字段的解释详见USB设备描述符。

          ===>Device Descriptor<===
bLength:                           0x12
bDescriptorType:                   0x01
bcdUSB:                          0x0200
bDeviceClass:                      0xEF  -> This is a Multi-interface Function Code Device
bDeviceSubClass:                   0x02  -> This is the Common Class Sub Class
bDeviceProtocol:                   0x01  -> This is the Interface Association Descriptor protocol
bMaxPacketSize0:                   0x40 = (64) Bytes
idVendor:                        0x1D6B = The Linux Foundation
idProduct:                       0x0102
bcdDevice:                       0x0409
iManufacturer:                     0x01
     English (United States)  "Linux Foundation"
iProduct:                          0x02
     English (United States)  "USB Webcam gadget"
iSerialNumber:                     0x00
bNumConfigurations:                0x01

配置描述符

配置描述符包含的信息比较多,包括配置描述符本身,也包括关联接口描述符,接口描述符,端点描述符和UVC定义的其它描述符如输入端点描述符等。

第一个当然是配置描述符:

          ===>Configuration Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x02
wTotalLength:                    0x032B  -> Validated
bNumInterfaces:                    0x04
bConfigurationValue:               0x01
iConfiguration:                    0x04
     English (United States)  "Video"
bmAttributes:                      0xC0  -> Self Powered
MaxPower:                          0x01 =   2 mA

UVC的接口关联描述符

          ===>IAD Descriptor<===
bLength:                           0x08
bDescriptorType:                   0x0B
bFirstInterface:                   0x00
bInterfaceCount:                   0x02
bFunctionClass:                    0x0E  -> Video Interface Class
bFunctionSubClass:                 0x03  -> Video Interface Collection
bFunctionProtocol:                 0x00  -> PC_PROTOCOL_UNDEFINED protocol
iFunction:                         0x05
     English (United States)  "UVC HD Camera"
控制接口描述符,为标准的描述符,后跟类特定视频控制接口头描述符.
          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x00
bAlternateSetting:                 0x00
bNumEndpoints:                     0x01
bInterfaceClass:                   0x0E  -> Video Interface Class
bInterfaceSubClass:                0x01  -> Video Control Interface SubClass
bInterfaceProtocol:                0x00
iInterface:                        0x05
     English (United States)  "UVC HD Camera"

类特定视频控制接口头描述符:

          ===>Class-Specific Video Control Interface Header Descriptor<===
bLength:                           0x0D
bDescriptorType:                   0x24
bDescriptorSubtype:                0x01
bcdVDC:                          0x0100
wTotalLength:                    0x0069  -> Validated
dwClockFreq:                 0x02DC6C00 = (48000000) Hz
bInCollection:                     0x01
baInterfaceNr[1]:                  0x01
USB Video Class device: spec version 1.0

输入端点描述符

          ===>Video Control Input Terminal Descriptor<===
bLength:                           0x12
bDescriptorType:                   0x24
bDescriptorSubtype:                0x02
bTerminalID:                       0x01
wTerminalType:                   0x0201 = (ITT_CAMERA)
bAssocTerminal:                    0x00
iTerminal:                         0x00
===>Camera Input Terminal Data
wObjectiveFocalLengthMin:        0x0000
wObjectiveFocalLengthMax:        0x0000
wOcularFocalLength:              0x0000
bControlSize:                      0x03
bmControls : 0x02 0x00 0x00 
     D00 = 0   no -  Scanning Mode
     D01 = 1  yes -  Auto-Exposure Mode
     D02 = 0   no -  Auto-Exposure Priority
     D03 = 0   no -  Exposure Time (Absolute)
     D04 = 0   no -  Exposure Time (Relative)
     D05 = 0   no -  Focus (Absolute)
     D06 = 0   no -  Focus (Relative)
     D07 = 0   no -  Iris (Absolute)
     D08 = 0   no -  Iris (Relative)
     D09 = 0   no -  Zoom (Absolute)
     D10 = 0   no -  Zoom (Relative)
     D11 = 0   no -  PanTilt (Absolute)
     D12 = 0   no -  PanTilt (Relative)
     D13 = 0   no -  Roll (Absolute)
     D14 = 0   no -  Roll (Relative)
     D15 = 0   no -  Reserved
     D16 = 0   no -  Reserved
     D17 = 0   no -  Focus, Auto
     D18 = 0   no -  Privacy
     D19 = 0   no -  Focus, Simple
     D20 = 0   no -  Window
     D21 = 0   no -  Region of Interest
     D22 = 0   no -  Reserved
     D23 = 0   no -  Reserved

处理单元描述符

          ===>Video Control Processing Unit Descriptor<===
bLength:                           0x0B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x05
bUnitID:                           0x04
bSourceID:                         0x01
wMaxMultiplier:                  0x4000
bControlSize:                      0x02
bmControls : 0x1F 0x04 
     D00 = 1  yes -  Brightness
     D01 = 1  yes -  Contrast
     D02 = 1  yes -  Hue
     D03 = 1  yes -  Saturation
     D04 = 1  yes -  Sharpness
     D05 = 0   no -  Gamma
     D06 = 0   no -  White Balance Temperature
     D07 = 0   no -  White Balance Component
     D08 = 0   no -  Backlight Compensation
     D09 = 0   no -  Gain
     D10 = 1  yes -  Power Line Frequency
     D11 = 0   no -  Hue, Auto
     D12 = 0   no -  White Balance Temperature, Auto
     D13 = 0   no -  White Balance Component, Auto
     D14 = 0   no -  Digital Multiplier
     D15 = 0   no -  Digital Multiplier Limit
iProcessing :                      0x00

扩展单元描述符:

          ===>Video Control Extension Unit Descriptor<===
bLength:                           0x1B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x06
bUnitID:                           0x06
guidExtensionCode:                 {23E49ED0-1178-4F31-AE52-D2FB8A8D3B48}
bNumControls:                      0x0E
bNrInPins:                         0x01
===>List of Connected Units and Terminal ID's
baSourceID[1]:                     0x04
bControlSize:                      0x02
bmControls : 0xFF 0x6F 
     D00 = 1  yes -  Vendor-Specific (Optional)
     D01 = 1  yes -  Vendor-Specific (Optional)
     D02 = 1  yes -  Vendor-Specific (Optional)
     D03 = 1  yes -  Vendor-Specific (Optional)
     D04 = 1  yes -  Vendor-Specific (Optional)
     D05 = 1  yes -  Vendor-Specific (Optional)
     D06 = 1  yes -  Vendor-Specific (Optional)
     D07 = 1  yes -  Vendor-Specific (Optional)
     D08 = 1  yes -  Vendor-Specific (Optional)
     D09 = 1  yes -  Vendor-Specific (Optional)
     D10 = 1  yes -  Vendor-Specific (Optional)
     D11 = 1  yes -  Vendor-Specific (Optional)
     D12 = 0   no -  Vendor-Specific (Optional)
     D13 = 1  yes -  Vendor-Specific (Optional)
     D14 = 1  yes -  Vendor-Specific (Optional)
     D15 = 0   no -  Vendor-Specific (Optional)
iExtension:                        0x00

第二个扩展单元描述符:


          ===>Video Control Extension Unit Descriptor<===
bLength:                           0x1B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x06
bUnitID:                           0x02
guidExtensionCode:                 {2C49D16A-32B8-4485-3EA8-643A152362F2}
bNumControls:                      0x06
bNrInPins:                         0x01
===>List of Connected Units and Terminal ID's
baSourceID[1]:                     0x06
bControlSize:                      0x02
bmControls : 0x3F 0x00 
     D00 = 1  yes -  Vendor-Specific (Optional)
     D01 = 1  yes -  Vendor-Specific (Optional)
     D02 = 1  yes -  Vendor-Specific (Optional)
     D03 = 1  yes -  Vendor-Specific (Optional)
     D04 = 1  yes -  Vendor-Specific (Optional)
     D05 = 1  yes -  Vendor-Specific (Optional)
     D06 = 0   no -  Vendor-Specific (Optional)
     D07 = 0   no -  Vendor-Specific (Optional)
     D08 = 0   no -  Vendor-Specific (Optional)
     D09 = 0   no -  Vendor-Specific (Optional)
     D10 = 0   no -  Vendor-Specific (Optional)
     D11 = 0   no -  Vendor-Specific (Optional)
     D12 = 0   no -  Vendor-Specific (Optional)
     D13 = 0   no -  Vendor-Specific (Optional)
     D14 = 0   no -  Vendor-Specific (Optional)
     D15 = 0   no -  Vendor-Specific (Optional)
iExtension:                        0x00

输出端点描述符:

          ===>Video Control Output Terminal Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x24
bDescriptorSubtype:                0x03
bTerminalID:                       0x03
wTerminalType:                   0x0101 = (TT_STREAMING)
bAssocTerminal:                    0x00
bSourceID:                         0x02
iTerminal:                         0x00

用于中断返回的状返回端点描述符:


          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x83  -> Direction: IN - EndpointID: 3
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0010 = 1 transactions per microframe, 0x10 max bytes
bInterval:                         0x08

          ===>Class-specific VC Interrupt Endpoint Descriptor<===
bLength:                           0x05 
bDescriptorType:                   0x25
bDescriptorSubtype:                0x03
wMaxTransferSize:                0x0010 = (16) Bytes
`
视频流接口描述符
    ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x01
bAlternateSetting:                 0x00
bNumEndpoints:                     0x00
bInterfaceClass:                   0x0E  -> Video Interface Class
bInterfaceSubClass:                0x02  -> Video Streaming Interface SubClass
bInterfaceProtocol:                0x00
iInterface:                        0x06
     English (United States)  "Video Streaming"

视频流输入头描述符

          ===>Video Class-Specific VS Video Input Header Descriptor<===
bLength:                           0x11
bDescriptorType:                   0x24
bDescriptorSubtype:                0x01
bNumFormats:                       0x04
wTotalLength:                    0x0217  -> Validated
bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
bmInfo:                            0x00  -> Dynamic Format Change not Supported
bTerminalLink:                     0x03
bStillCaptureMethod:               0x00  -> No Still Capture
bTriggerSupport:                   0x00  -> No Hardware Triggering Support
bTriggerUsage:                     0x00
bControlSize:                      0x01
Video Payload Format 1             0x00 
     D00 = 0   no -  Key Frame Rate
     D01 = 0   no -  P Frame Rate
     D02 = 0   no -  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
Video Payload Format 2             0x00 
     D00 = 0   no -  Key Frame Rate
     D01 = 0   no -  P Frame Rate
     D02 = 0   no -  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
Video Payload Format 3             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
Video Payload Format 4             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

支持的三种分辩率的MJPG数据格式和帧格式描述符:

bFormatIndex bFrameIndex 分辩率及及帧率
1 1 640x480x(30,15,10)
1 2 1280x720x(30,15,10)
1 3 1920x1080x(30,15,10)
 ===>Video Streaming MJPEG Format Type Descriptor<===
bLength:                           0x0B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x06
bFormatIndex:                      0x01
bNumFrameDescriptors:              0x03
bmFlags:                           0x00  -> Sample Size is Not Fixed
bDefaultFrameIndex:                0x03
bAspectRatioX:                     0x00
bAspectRatioY:                     0x00
bmInterlaceFlags:                  0x00
     D00   = 0  non-Interlaced stream or variable
     D01   = 0  2 fields per frame
     D02   = 0  Field 1 not first
     D03   = 0  Reserved
     D4..5 = 0  Field patterns  -> Field 1 only
     D6..7 = 0  Display Mode  -> Bob only
bCopyProtect:                      0x00  -> Duplication Unrestricted

          ===>Video Streaming MJPEG Frame Type Descriptor<===
bLength:                           0x26
bDescriptorType:                   0x24
bDescriptorSubtype:                0x07
bFrameIndex:                       0x01
bmCapabilities:                    0x00
wWidth:                          0x0280 = 640
wHeight:                         0x01E0 = 480
dwMinBitRate:                0x02EE0000
dwMaxBitRate:                0x08CA0000
dwMaxVideoFrameBufferSize:   0x00096000
dwDefaultFrameInterval:      0x00051615 = 33.333300 mSec (30.00 Hz)
bFrameIntervalType:                0x03
===>Additional Discrete Frame TypeData
dwFrameInterval[1]:          0x00051615 = 33.333300 mSec (30.00 Hz)
dwFrameInterval[2]:          0x000A2C2A = 66.666600 mSec (15.00 Hz)
dwFrameInterval[3]:          0x000F4240 = 100.000000 mSec (10.00 Hz)

          ===>Video Streaming MJPEG Frame Type Descriptor<===
bLength:                           0x26
bDescriptorType:                   0x24
bDescriptorSubtype:                0x07
bFrameIndex:                       0x02
bmCapabilities:                    0x00
wWidth:                          0x0500 = 1280
wHeight:                         0x02D0 = 720
dwMinBitRate:                0x08CA0000
dwMaxBitRate:                0x1A5E0000
dwMaxVideoFrameBufferSize:   0x001C2000
dwDefaultFrameInterval:      0x00051615 = 33.333300 mSec (30.00 Hz)
bFrameIntervalType:                0x03
===>Additional Discrete Frame TypeData
dwFrameInterval[1]:          0x00051615 = 33.333300 mSec (30.00 Hz)
dwFrameInterval[2]:          0x000A2C2A = 66.666600 mSec (15.00 Hz)
dwFrameInterval[3]:          0x000F4240 = 100.000000 mSec (10.00 Hz)

          ===>Video Streaming MJPEG Frame Type Descriptor<===
          --->This is the Default (optimum) Frame index
bLength:                           0x26
bDescriptorType:                   0x24
bDescriptorSubtype:                0x07
bFrameIndex:                       0x03
bmCapabilities:                    0x00
wWidth:                          0x0780 = 1920
wHeight:                         0x0438 = 1080
dwMinBitRate:                0x13C68000
dwMaxBitRate:                0x3B538000
dwMaxVideoFrameBufferSize:   0x003F4800
dwDefaultFrameInterval:      0x00051615 = 33.333300 mSec (30.00 Hz)
bFrameIntervalType:                0x03
===>Additional Discrete Frame TypeData
dwFrameInterval[1]:          0x00051615 = 33.333300 mSec (30.00 Hz)
dwFrameInterval[2]:          0x000A2C2A = 66.666600 mSec (15.00 Hz)
dwFrameInterval[3]:          0x000F4240 = 100.000000 mSec (10.00 Hz)

VS_FORMAT_FRAME_BASED和VS_FRAME_FRAME_BASED的YUV格式描述符:

bFormatIndex bFrameIndex 分辩率及及帧率
2 1 640x480x(30,15,10)
2 2 1280x720x(30,15,10)
  ===>Video Streaming Uncompressed Format Type Descriptor<===
bLength:                           0x1B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x04
bFormatIndex:                      0x02
bNumFrameDescriptors:              0x02
guidFormat:                        {32595559-0000-0010-8000-00AA00389B71} = YUY2 Format
bBitsPerPixel:                     0x10
bDefaultFrameIndex:                0x01
bAspectRatioX:                     0x00
bAspectRatioY:                     0x00
bmInterlaceFlags:                  0x00
     D0    = 0x00 Interlaced stream or variable: No
     D1    = 0x00 Fields per frame: 2 fields
     D2    = 0x00 Field 1 first: No
     D3    = 0x00 Reserved
     D4..5 = 0x00 Field patterns  -> Field 1 only
     D6..7 = 0x00 Display Mode  -> Bob only
bCopyProtect:                      0x00  -> Duplication Unrestricted

          ===>Video Streaming Uncompressed Frame Type Descriptor<===
          --->This is the Default (optimum) Frame index
bLength:                           0x26
bDescriptorType:                   0x24
bDescriptorSubtype:                0x05
bFrameIndex:                       0x01
bmCapabilities:                    0x00
wWidth:                          0x0280 = 640
wHeight:                         0x01E0 = 480
dwMinBitRate:                0x02EE0000
dwMaxBitRate:                0x08CA0000
dwMaxVideoFrameBufferSize:   0x00096000
dwDefaultFrameInterval:      0x00051615 = 33.333300 mSec (30.00 Hz)
bFrameIntervalType:                0x03
===>Additional Discrete Frame Type Data
dwFrameInterval[1]:          0x00051615 = 33.333300 mSec (30.00 Hz)
dwFrameInterval[2]:          0x000A2C2A = 66.666600 mSec (15.00 Hz)
dwFrameInterval[3]:          0x000F4240 = 100.000000 mSec (10.00 Hz)

          ===>Video Streaming Uncompressed Frame Type Descriptor<===
bLength:                           0x26
bDescriptorType:                   0x24
bDescriptorSubtype:                0x05
bFrameIndex:                       0x02
bmCapabilities:                    0x00
wWidth:                          0x0500 = 1280
wHeight:                         0x02D0 = 720
dwMinBitRate:                0x08CA0000
dwMaxBitRate:                0x1A5E0000
dwMaxVideoFrameBufferSize:   0x001C2000
dwDefaultFrameInterval:      0x00051615 = 33.333300 mSec (30.00 Hz)
bFrameIntervalType:                0x03
===>Additional Discrete Frame Type Data
dwFrameInterval[1]:          0x00051615 = 33.333300 mSec (30.00 Hz)
dwFrameInterval[2]:          0x000A2C2A = 66.666600 mSec (15.00 Hz)
dwFrameInterval[3]:          0x000F4240 = 100.000000 mSec (10.00 Hz)

H264数据格式


        ---- VS Frame Based Payload Format Type Descriptor ----
*!*ERROR: This format is NOT ALLOWED for UVC 1.0 devices
bLength                  : 0x1C (28 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x10 (Frame Based Format Type)
bFormatIndex             : 0x03 (3)
bNumFrameDescriptors     : 0x03 (3)
guidFormat               : {34363248-0000-0010-8000-00AA00389B71} (H264)
bBitsPerPixel            : 0x10 (16 bits)
bDefaultFrameIndex       : 0x03 (3)
bAspectRatioX            : 0x00
bAspectRatioY            : 0x00
bmInterlaceFlags         : 0x00
 D0 IL stream or variable: 0 (no)
 D1 Fields per frame     : 0 (2 fields)
 D2 Field 1 first        : 0 (no)
 D3 Reserved             : 0
 D4..5 Field pattern     : 0 (Field 1 only)
 D6..7 Display Mode      : 0 (Bob only)
bCopyProtect             : 0x00 (No restrictions)
bVariableSize            : 0x01 (Variable Size)
*!*ERROR:  Found 6 frame descriptors (should be 3)
Data (HexDump)           : 1C 24 10 03 03 48 32 36 34 00 00 10 00 80 00 00   .$...H264.......
                           AA 00 38 9B 71 10 03 00 00 00 00 01               ..8.q.......

GUID来源于:https://uuid.pirate-server.com/

帧格式为:
第一个为640X480

        ----- VS Frame Based Payload Frame Type Descriptor ----
*!*ERROR  bDescriptorSubtype did not exist in UVC 1.0
bLength                  : 0x26 (38 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x11 (Frame Based Payload Frame Type)
bFrameIndex              : 0x01
bmCapabilities           : 0x00
wWidth                   : 0x0280 (640)
wHeight                  : 0x01E0 (480)
dwMinBitRate             : 0x02EE0000 (49152000 bps -> 6.144 MB/s)
dwMaxBitRate             : 0x08CA0000 (147456000 bps -> 18.432 MB/s)
dwDefaultFrameInterval   : 0x00051615 (33.3333 ms -> 30.000 fps)
bFrameIntervalType       : 0x03 (3 discrete frame intervals supported)
dwBytesPerLine           : 0x00 (0 bytes)
adwFrameInterval[1]      : 0x00051615 (33.3333 ms -> 30.000 fps)
adwFrameInterval[2]      : 0x000A2C2A (66.6666 ms -> 15.000 fps)
adwFrameInterval[3]      : 0x000F4240 (100.0000 ms -> 10.000 fps)
Data (HexDump)           : 26 24 11 01 00 80 02 E0 01 00 00 EE 02 00 00 CA   &$..............
                           08 15 16 05 00 03 00 00 00 00 15 16 05 00 2A 2C   ..............*,
                           0A 00 40 42 0F 00                                 ..@B..

第二个为1280x720

        ----- VS Frame Based Payload Frame Type Descriptor ----
*!*ERROR  bDescriptorSubtype did not exist in UVC 1.0
bLength                  : 0x26 (38 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x11 (Frame Based Payload Frame Type)
bFrameIndex              : 0x02
bmCapabilities           : 0x00
wWidth                   : 0x0500 (1280)
wHeight                  : 0x02D0 (720)
dwMinBitRate             : 0x08CA0000 (147456000 bps -> 18.432 MB/s)
dwMaxBitRate             : 0x1A5E0000 (442368000 bps -> 55.296 MB/s)
dwDefaultFrameInterval   : 0x00051615 (33.3333 ms -> 30.000 fps)
bFrameIntervalType       : 0x03 (3 discrete frame intervals supported)
dwBytesPerLine           : 0x00 (0 bytes)
adwFrameInterval[1]      : 0x00051615 (33.3333 ms -> 30.000 fps)
adwFrameInterval[2]      : 0x000A2C2A (66.6666 ms -> 15.000 fps)
adwFrameInterval[3]      : 0x000F4240 (100.0000 ms -> 10.000 fps)
Data (HexDump)           : 26 24 11 02 00 00 05 D0 02 00 00 CA 08 00 00 5E   &$.............^
                           1A 15 16 05 00 03 00 00 00 00 15 16 05 00 2A 2C   ..............*,
                           0A 00 40 42 0F 00                                 ..@B..

第三个为:1920x1080

        ----- VS Frame Based Payload Frame Type Descriptor ----
*!*ERROR  bDescriptorSubtype did not exist in UVC 1.0
bLength                  : 0x26 (38 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x11 (Frame Based Payload Frame Type)
bFrameIndex              : 0x03
bmCapabilities           : 0x00
wWidth                   : 0x0780 (1920)
wHeight                  : 0x0438 (1080)
dwMinBitRate             : 0x13C68000 (331776000 bps -> 41.472 MB/s)
dwMaxBitRate             : 0x3B538000 (995328000 bps -> 124.416 MB/s)
dwDefaultFrameInterval   : 0x00051615 (33.3333 ms -> 30.000 fps)
bFrameIntervalType       : 0x03 (3 discrete frame intervals supported)
dwBytesPerLine           : 0x00 (0 bytes)
adwFrameInterval[1]      : 0x00051615 (33.3333 ms -> 30.000 fps)
adwFrameInterval[2]      : 0x000A2C2A (66.6666 ms -> 15.000 fps)
adwFrameInterval[3]      : 0x000F4240 (100.0000 ms -> 10.000 fps)
Data (HexDump)           : 26 24 11 03 00 80 07 38 04 00 80 C6 13 00 80 53   &$.....8.......S
                           3B 15 16 05 00 03 00 00 00 00 15 16 05 00 2A 2C   ;.............*,
                           0A 00 40 42 0F 00                                 ..@B..

H265数据格式

  ---- VS Frame Based Payload Format Type Descriptor ----
*!*ERROR: This format is NOT ALLOWED for UVC 1.0 devices
bLength                  : 0x1C (28 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x10 (Frame Based Format Type)
bFormatIndex             : 0x04 (4)
bNumFrameDescriptors     : 0x03 (3)
guidFormat               : {35363248-0000-0010-8000-00AA00389B71} (H265)
bBitsPerPixel            : 0x10 (16 bits)
bDefaultFrameIndex       : 0x03 (3)
bAspectRatioX            : 0x00
bAspectRatioY            : 0x00
bmInterlaceFlags         : 0x00
 D0 IL stream or variable: 0 (no)
 D1 Fields per frame     : 0 (2 fields)
 D2 Field 1 first        : 0 (no)
 D3 Reserved             : 0
 D4..5 Field pattern     : 0 (Field 1 only)
 D6..7 Display Mode      : 0 (Bob only)
bCopyProtect             : 0x00 (No restrictions)
bVariableSize            : 0x01 (Variable Size)
Data (HexDump)           : 1C 24 10 04 03 48 32 36 35 00 00 10 00 80 00 00   .$...H265.......
                           AA 00 38 9B 71 10 03 00 00 00 00 01               ..8.q.......

帧格式为:
第一个为640X480

        ----- VS Frame Based Payload Frame Type Descriptor ----
*!*ERROR  bDescriptorSubtype did not exist in UVC 1.0
bLength                  : 0x26 (38 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x11 (Frame Based Payload Frame Type)
bFrameIndex              : 0x01
bmCapabilities           : 0x00
wWidth                   : 0x0280 (640)
wHeight                  : 0x01E0 (480)
dwMinBitRate             : 0x02EE0000 (49152000 bps -> 6.144 MB/s)
dwMaxBitRate             : 0x08CA0000 (147456000 bps -> 18.432 MB/s)
dwDefaultFrameInterval   : 0x00051615 (33.3333 ms -> 30.000 fps)
bFrameIntervalType       : 0x03 (3 discrete frame intervals supported)
dwBytesPerLine           : 0x00 (0 bytes)
adwFrameInterval[1]      : 0x00051615 (33.3333 ms -> 30.000 fps)
adwFrameInterval[2]      : 0x000A2C2A (66.6666 ms -> 15.000 fps)
adwFrameInterval[3]      : 0x000F4240 (100.0000 ms -> 10.000 fps)
Data (HexDump)           : 26 24 11 01 00 80 02 E0 01 00 00 EE 02 00 00 CA   &$..............
                           08 15 16 05 00 03 00 00 00 00 15 16 05 00 2A 2C   ..............*,
                           0A 00 40 42 0F 00                                 ..@B..

第二个为1280x720

        ----- VS Frame Based Payload Frame Type Descriptor ----
*!*ERROR  bDescriptorSubtype did not exist in UVC 1.0
bLength                  : 0x26 (38 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x11 (Frame Based Payload Frame Type)
bFrameIndex              : 0x02
bmCapabilities           : 0x00
wWidth                   : 0x0500 (1280)
wHeight                  : 0x02D0 (720)
dwMinBitRate             : 0x08CA0000 (147456000 bps -> 18.432 MB/s)
dwMaxBitRate             : 0x1A5E0000 (442368000 bps -> 55.296 MB/s)
dwDefaultFrameInterval   : 0x00051615 (33.3333 ms -> 30.000 fps)
bFrameIntervalType       : 0x03 (3 discrete frame intervals supported)
dwBytesPerLine           : 0x00 (0 bytes)
adwFrameInterval[1]      : 0x00051615 (33.3333 ms -> 30.000 fps)
adwFrameInterval[2]      : 0x000A2C2A (66.6666 ms -> 15.000 fps)
adwFrameInterval[3]      : 0x000F4240 (100.0000 ms -> 10.000 fps)
Data (HexDump)           : 26 24 11 02 00 00 05 D0 02 00 00 CA 08 00 00 5E   &$.............^
                           1A 15 16 05 00 03 00 00 00 00 15 16 05 00 2A 2C   ..............*,
                           0A 00 40 42 0F 00                                 ..@B..

第三个为:1920x1080

        ----- VS Frame Based Payload Frame Type Descriptor ----
*!*ERROR  bDescriptorSubtype did not exist in UVC 1.0
bLength                  : 0x26 (38 bytes)
bDescriptorType          : 0x24 (Video Streaming Interface)
bDescriptorSubtype       : 0x11 (Frame Based Payload Frame Type)
bFrameIndex              : 0x03
bmCapabilities           : 0x00
wWidth                   : 0x0780 (1920)
wHeight                  : 0x0438 (1080)
dwMinBitRate             : 0x13C68000 (331776000 bps -> 41.472 MB/s)
dwMaxBitRate             : 0x3B538000 (995328000 bps -> 124.416 MB/s)
dwDefaultFrameInterval   : 0x00051615 (33.3333 ms -> 30.000 fps)
bFrameIntervalType       : 0x03 (3 discrete frame intervals supported)
dwBytesPerLine           : 0x00 (0 bytes)
adwFrameInterval[1]      : 0x00051615 (33.3333 ms -> 30.000 fps)
adwFrameInterval[2]      : 0x000A2C2A (66.6666 ms -> 15.000 fps)
adwFrameInterval[3]      : 0x000F4240 (100.0000 ms -> 10.000 fps)
Data (HexDump)           : 26 24 11 03 00 80 07 38 04 00 80 C6 13 00 80 53   &$.....8.......S
                           3B 15 16 05 00 03 00 00 00 00 15 16 05 00 2A 2C   ;.............*,
                           0A 00 40 42 0F 00                                 ..@B..

颜色匹配描述符

          ===>Color Matching Descriptor<===
bLength:                           0x06
bDescriptorType:                   0x24
bDescriptorSubtype:                0x0D
bColorPrimaries:                   0x01
bTransferCharacteristics:          0x01
bMatrixCoefficients:               0x04

用于转换的接口描述符,包含一个81端点用于数据接收视频数据,方式为等时/同步传输方式。


          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x01
bAlternateSetting:                 0x01
bNumEndpoints:                     0x01
bInterfaceClass:                   0x0E  -> Video Interface Class
bInterfaceSubClass:                0x02  -> Video Streaming Interface SubClass
bInterfaceProtocol:                0x00
iInterface:                        0x06
     English (United States)  "Video Streaming"

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
bmAttributes:                      0x05  -> Isochronous Transfer Type, Synchronization Type = Asynchronous, Usage Type = Data Endpoint
wMaxPacketSize:                  0x1400 = 3 transactions per microframe, 0x400 max bytes
bInterval:                         0x01

0 篇笔记 写笔记

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作者信息
USB中文网
Windows驱动开发,网站开发
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