USB扬声器UAC设备示例

一个简单的USB扬声器，没有其它的功能，比较简单，其设备管理器中的信息如下：

USBTreeView中的描述符如下：

    =========================== USB Port10 ===========================
Connection Status        : 0x01 (Device is connected)
Port Chain               : 2-10
Properties               : 0x01
 IsUserConnectable       : yes
 PortIsDebugCapable      : no
 PortHasMultiCompanions  : no
 PortConnectorIsTypeC    : no
ConnectionIndex          : 10
      ======================== USB Device ========================
        +++++++++++++++++ Device Information ++++++++++++++++++
Device Description       : USB Composite Device
Device Path              : \\?\USB#VID_1908&PID_2070#20130100ph0#{a5dcbf10-6530-11d2-901f-00c04fb951ed} (GUID_DEVINTERFACE_USB_DEVICE)
Kernel Name              : \Device\USBPDO-4
Device ID                : USB\VID_1908&PID_2070\20130100PH0
Hardware IDs             : USB\VID_1908&PID_2070&REV_0100 USB\VID_1908&PID_2070
Driver KeyName           : {36fc9e60-c465-11cf-8056-444553540000}\0005 (GUID_DEVCLASS_USB)
Driver                   : \SystemRoot\System32\drivers\usbccgp.sys (Version: 10.0.14393.1794  Date: 2017-10-09)
Driver Inf               : C:\Windows\inf\usb.inf
Legacy BusType           : PNPBus
Class                    : USB
Class GUID               : {36fc9e60-c465-11cf-8056-444553540000} (GUID_DEVCLASS_USB)
Service                  : usbccgp
Enumerator               : USB
Location Info            : Port_#0010.Hub_#0001
Location IDs             : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(10), ACPI(_SB_)#ACPI(PCI0)#ACPI(XHC_)#ACPI(RHUB)#ACPI(HS10)
Container ID             : {20f273cf-3d2d-50f1-9056-ed8c50532203}
Manufacturer Info        : (标准 USB 主控制器)
Capabilities             : 0x94 (Removable, UniqueID, SurpriseRemovalOK)
Status                   : 0x0180600A (DN_DRIVER_LOADED, DN_STARTED, DN_DISABLEABLE, DN_REMOVABLE, DN_NT_ENUMERATOR, DN_NT_DRIVER)
Problem Code             : 0
Address                  : 10
HcDisableSelectiveSuspend: 0
EnableSelectiveSuspend   : 0
SelectiveSuspendEnabled  : 0
EnhancedPowerMgmtEnabled : 0
IdleInWorkingState       : 0
WakeFromSleepState       : 0
Power State              : D0 (supported: D0, D3, wake from D0)
 Child Device 1          : USB2.0 Device (USB Audio Device)
  Device Path 1          : \\?\USB#VID_1908&PID_2070&MI_00#6&1181b5ec&0&0000#{65e8773e-8f56-11d0-a3b9-00a0c9223196}\global (AM_KSCATEGORY_RENDER)
  Device Path 2          : \\?\USB#VID_1908&PID_2070&MI_00#6&1181b5ec&0&0000#{6994ad04-93ef-11d0-a3cc-00a0c9223196}\global (AM_KSCATEGORY_AUDIO)
  Kernel Name            : \Device\0000005b
  Device ID              : USB\VID_1908&PID_2070&MI_00\6&1181B5EC&0&0000
  Class                  : MEDIA
  Driver KeyName         : {4d36e96c-e325-11ce-bfc1-08002be10318}\0013 (GUID_DEVCLASS_MEDIA)
  Service                : usbaudio
   Child Device 1        : 扬声器 (USB2.0 Device) (音频端点)
    Device Path          : \\?\SWD#MMDEVAPI#{0.0.0.00000000}.{3159594e-82fd-44ec-8904-747ff7a4d8ff}#{e6327cad-dcec-4949-ae8a-991e976a79d2} (DEVINTERFACE_AUDIO_RENDER)
    Kernel Name          : \Device\00000064
    Device ID            : SWD\MMDEVAPI\{0.0.0.00000000}.{3159594E-82FD-44EC-8904-747FF7A4D8FF}
    Class                : AudioEndpoint
    Driver KeyName       : {c166523c-fe0c-4a94-a586-f1a80cfbbf3e}\0010 (AUDIOENDPOINT_CLASS_UUID)
        +++++++++++++++++ Registry USB Flags +++++++++++++++++
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\190820700100
 NewInterfaceUsage       : REG_DWORD 00000000 (0)
        ---------------- Connection Information ---------------
Connection Index         : 0x0A (10)
Connection Status        : 0x01 (DeviceConnected)
Current Config Value     : 0x01
Device Address           : 0x01 (1)
Is Hub                   : 0x00 (no)
Device Bus Speed         : 0x01 (Full-Speed)
Number Of Open Pipes     : 0x00 (0 pipes to data endpoints)
Data (HexDump)           : 0A 00 00 00 12 01 10 01 00 00 00 40 08 19 70 20   ...........@..p 
                           00 01 01 02 03 01 01 01 00 01 00 00 00 00 00 01   ................
                           00 00 00                                          ...
        --------------- Connection Information V2 -------------
Connection Index         : 0x0A (10)
Length                   : 0x10 (16 bytes)
SupportedUsbProtocols    : 0x03
 Usb110                  : 1 (yes)
 Usb200                  : 1 (yes)
 Usb300                  : 0 (no)
 ReservedMBZ             : 0x00
Flags                    : 0x00
 DevIsOpAtSsOrHigher     : 0 (Is not operating at SuperSpeed or higher)
 DevIsSsCapOrHigher      : 0 (Is not SuperSpeed capable or higher)
 DevIsOpAtSsPlusOrHigher : 0 (Is not operating at SuperSpeedPlus or higher)
 DevIsSsPlusCapOrHigher  : 0 (Is not SuperSpeedPlus capable or higher)
 ReservedMBZ             : 0x00
Data (HexDump)           : 0A 00 00 00 10 00 00 00 03 00 00 00 00 00 00 00   ................
    ---------------------- Device Descriptor ----------------------
bLength                  : 0x12 (18 bytes)
bDescriptorType          : 0x01 (Device Descriptor)
bcdUSB                   : 0x110 (USB Version 1.10)
bDeviceClass             : 0x00 (defined by the interface descriptors)
bDeviceSubClass          : 0x00
bDeviceProtocol          : 0x00
bMaxPacketSize0          : 0x40 (64 bytes)
idVendor                 : 0x1908 (APPOTECH LIMITED)
idProduct                : 0x2070
bcdDevice                : 0x0100
iManufacturer            : 0x01 (String Descriptor 1)
 Language 0x0409         : "Generic"
iProduct                 : 0x02 (String Descriptor 2)
 Language 0x0409         : "USB2.0 Device"
iSerialNumber            : 0x03 (String Descriptor 3)
 Language 0x0409         : "20130100ph0"
bNumConfigurations       : 0x01 (1 Configuration)
Data (HexDump)           : 12 01 10 01 00 00 00 40 08 19 70 20 00 01 01 02   .......@..p ....
                           03 01                                             ..
    ------------------ Configuration Descriptor -------------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x02 (Configuration Descriptor)
wTotalLength             : 0x006E (110 bytes)
bNumInterfaces           : 0x02 (2 Interfaces)
bConfigurationValue      : 0x01 (Configuration 1)
iConfiguration           : 0x00 (No String Descriptor)
bmAttributes             : 0x80
 D7: Reserved, set 1     : 0x01
 D6: Self Powered        : 0x00 (no)
 D5: Remote Wakeup       : 0x00 (no)
 D4..0: Reserved, set 0  : 0x00
MaxPower                 : 0xC8 (400 mA)
Data (HexDump)           : 09 02 6E 00 02 01 00 80 C8 09 04 00 00 00 01 01   ..n.............
                           00 00 09 24 01 00 01 28 00 01 01 0C 24 02 01 01   ...$...(....$...
                           01 00 02 03 00 00 00 0A 24 06 02 01 01 03 00 00   ........$.......
                           00 09 24 03 03 01 03 00 02 00 09 04 01 00 00 01   ..$.............
                           02 00 00 09 04 01 01 01 01 02 00 00 07 24 01 01   .............$..
                           01 01 00 0B 24 02 01 02 02 10 01 80 BB 00 09 05   ....$...........
                           02 09 C0 00 01 00 00 07 25 01 01 01 01 00         ........%.....
        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x00
bAlternateSetting        : 0x00
bNumEndpoints            : 0x00 (Default Control Pipe only)
bInterfaceClass          : 0x01 (Audio)
bInterfaceSubClass       : 0x01 (Audio Control)
bInterfaceProtocol       : 0x00
iInterface               : 0x00 (No String Descriptor)
Data (HexDump)           : 09 04 00 00 00 01 01 00 00                        .........
        ------ Audio Control Interface Header Descriptor ------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x24 (Audio Interface Descriptor)
bDescriptorSubtype       : 0x01 (Header)
bcdADC                   : 0x0100
wTotalLength             : 0x0028 (40 bytes)
bInCollection            : 0x01
baInterfaceNr[1]         : 0x01
Data (HexDump)           : 09 24 01 00 01 28 00 01 01                        .$...(...
        ------- Audio Control Input Terminal Descriptor -------
bLength                  : 0x0C (12 bytes)
bDescriptorType          : 0x24 (Audio Interface Descriptor)
bDescriptorSubtype       : 0x02 (Input Terminal)
bTerminalID              : 0x01
wTerminalType            : 0x0101 (USB streaming)
bAssocTerminal           : 0x00
bNrChannels              : 0x02 (2 channels)
wChannelConfig           : 0x0003 (L, R)
iChannelNames            : 0x00 (No String Descriptor)
iTerminal                : 0x00 (No String Descriptor)
Data (HexDump)           : 0C 24 02 01 01 01 00 02 03 00 00 00               .$..........
        -------- Audio Control Feature Unit Descriptor --------
bLength                  : 0x0A (10 bytes)
bDescriptorType          : 0x24 (Audio Interface Descriptor)
bDescriptorSubtype       : 0x06 (Feature Unit)
bUnitID                  : 0x02 (2)
bSourceID                : 0x01 (1)
bControlSize             : 0x01 (1 byte per control)
bmaControls[0]           : 0x03
 D0: Mute                : 1
 D1: Volume              : 1
 D2: Bass                : 0
 D3: Mid                 : 0
 D4: Treble              : 0
 D5: Graphic Equalizer   : 0
 D6: Automatic Gain      : 0
 D7: Delay               : 0
bmaControls[1]           : 0x00
 D0: Mute                : 0
 D1: Volume              : 0
 D2: Bass                : 0
 D3: Mid                 : 0
 D4: Treble              : 0
 D5: Graphic Equalizer   : 0
 D6: Automatic Gain      : 0
 D7: Delay               : 0
bmaControls[2]           : 0x00
 D0: Mute                : 0
 D1: Volume              : 0
 D2: Bass                : 0
 D3: Mid                 : 0
 D4: Treble              : 0
 D5: Graphic Equalizer   : 0
 D6: Automatic Gain      : 0
 D7: Delay               : 0
iFeature                 : 0x00 (No String Descriptor)
Data (HexDump)           : 0A 24 06 02 01 01 03 00 00 00                     .$........
        ------- Audio Control Output Terminal Descriptor ------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x24 (Audio Interface Descriptor)
bDescriptorSubtype       : 0x03 (Output Terminal)
bTerminalID              : 0x03
wTerminalType            : 0x0301 (Speaker)
bAssocTerminal           : 0x00 (0)
bSourceID                : 0x02 (2)
iTerminal                : 0x00 (No String Descriptor)
Data (HexDump)           : 09 24 03 03 01 03 00 02 00                        .$.......
        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x01
bAlternateSetting        : 0x00
bNumEndpoints            : 0x00 (Default Control Pipe only)
bInterfaceClass          : 0x01 (Audio)
bInterfaceSubClass       : 0x02 (Audio Streaming)
bInterfaceProtocol       : 0x00
iInterface               : 0x00 (No String Descriptor)
Data (HexDump)           : 09 04 01 00 00 01 02 00 00                        .........
        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x01
bAlternateSetting        : 0x01
bNumEndpoints            : 0x01 (1 Endpoint)
bInterfaceClass          : 0x01 (Audio)
bInterfaceSubClass       : 0x02 (Audio Streaming)
bInterfaceProtocol       : 0x00
iInterface               : 0x00 (No String Descriptor)
Data (HexDump)           : 09 04 01 01 01 01 02 00 00                        .........
        -------- Audio Streaming Interface Descriptor ---------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x24 (Audio Interface Descriptor)
bDescriptorSubtype       : 0x01
bTerminalLink            : 0x01
bDelay                   : 0x01
wFormatTag               : 0x0001 (PCM)
Data (HexDump)           : 07 24 01 01 01 01 00                              .$.....
        ------- Audio Streaming Format Type Descriptor --------
bLength                  : 0x0B (11 bytes)
bDescriptorType          : 0x24 (Audio Interface Descriptor)
bDescriptorSubtype       : 0x02 (Format Type)
bFormatType              : 0x01 (FORMAT_TYPE_I)
bNrChannels              : 0x02 (2 channels)
bSubframeSize            : 0x02 (2 bytes per subframe)
bBitResolution           : 0x10 (16 bits per sample)
bSamFreqType             : 0x01 (supports 1 sample frequence)
tSamFreq[1]              : 0x0BB80 (48000 Hz)
Data (HexDump)           : 0B 24 02 01 02 02 10 01 80 BB 00                  .$.........
        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x02 (Direction=OUT EndpointID=2)
bmAttributes             : 0x09 (TransferType=Isochronous  SyncType=Adaptive  EndpointType=Data)
wMaxPacketSize           : 0x00C0 (192 bytes)
bInterval                : 0x01 (1 ms)
bRefresh                 : 0x00
bSynchAddress            : 0x00
Data (HexDump)           : 09 05 02 09 C0 00 01 00 00                        .........
        ----------- Audio Data Endpoint Descriptor ------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x25 (Audio Endpoint Descriptor)
bDescriptorSubtype       : 0x01 (General)
bmAttributes             : 0x01
 D0   : Sampling Freq    : 0x01 (supported)
 D1   : Pitch            : 0x00 (not supported)
 D6..2: Reserved         : 0x00
 D7   : MaxPacketsOnly   : 0x00 (no)
bLockDelayUnits          : 0x01 (Milliseconds)
wLockDelay               : 0x0001 (1 ms)
Data (HexDump)           : 07 25 01 01 01 01 00                              .%.....
      -------------------- String Descriptors -------------------
             ------ String Descriptor 0 ------
bLength                  : 0x04 (4 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language ID[0]           : 0x0409 (English - United States)
Data (HexDump)           : 04 03 09 04                                       ....
             ------ String Descriptor 1 ------
bLength                  : 0x10 (16 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "Generic"
Data (HexDump)           : 10 03 47 00 65 00 6E 00 65 00 72 00 69 00 63 00   ..G.e.n.e.r.i.c.
             ------ String Descriptor 2 ------
bLength                  : 0x1C (28 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "USB2.0 Device"
Data (HexDump)           : 1C 03 55 00 53 00 42 00 32 00 2E 00 30 00 20 00   ..U.S.B.2...0. .
                           44 00 65 00 76 00 69 00 63 00 65 00               D.e.v.i.c.e.
             ------ String Descriptor 3 ------
bLength                  : 0x18 (24 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "20130100ph0"
Data (HexDump)           : 18 03 32 00 30 00 31 00 33 00 30 00 31 00 30 00   ..2.0.1.3.0.1.0.
                           30 00 70 00 68 00 30 00                           0.p.h.0.