📄 uvcvideo.h
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#ifndef _USB_VIDEO_H_#define _USB_VIDEO_H_#include <linux/kernel.h>#include <linux/videodev.h>/* Compatibility */#include "uvc_compat.h"/* * Private V4L2 control identifiers. */#define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_PRIVATE_BASE+0)#define V4L2_CID_POWER_LINE_FREQUENCY (V4L2_CID_PRIVATE_BASE+1)#define V4L2_CID_SHARPNESS (V4L2_CID_PRIVATE_BASE+2)#define V4L2_CID_HUE_AUTO (V4L2_CID_PRIVATE_BASE+3)#define V4L2_CID_FOCUS_AUTO (V4L2_CID_PRIVATE_BASE+4)#define V4L2_CID_FOCUS_ABSOLUTE (V4L2_CID_PRIVATE_BASE+5)#define V4L2_CID_FOCUS_RELATIVE (V4L2_CID_PRIVATE_BASE+6)#define V4L2_CID_PAN_RELATIVE (V4L2_CID_PRIVATE_BASE+7)#define V4L2_CID_TILT_RELATIVE (V4L2_CID_PRIVATE_BASE+8)#define V4L2_CID_PANTILT_RESET (V4L2_CID_PRIVATE_BASE+9)#define V4L2_CID_EXPOSURE_AUTO (V4L2_CID_PRIVATE_BASE+10)#define V4L2_CID_EXPOSURE_ABSOLUTE (V4L2_CID_PRIVATE_BASE+11)#define V4L2_CID_WHITE_BALANCE_TEMPERATURE_AUTO (V4L2_CID_PRIVATE_BASE+12)#define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_PRIVATE_BASE+13)#define V4L2_CID_PRIVATE_LAST V4L2_CID_WHITE_BALANCE_TEMPERATURE#ifdef __KERNEL__/* -------------------------------------------------------------------------- * UVC constants */#define SC_UNDEFINED 0x00#define SC_VIDEOCONTROL 0x01#define SC_VIDEOSTREAMING 0x02#define SC_VIDEO_INTERFACE_COLLECTION 0x03#define PC_PROTOCOL_UNDEFINED 0x00#define CS_UNDEFINED 0x20#define CS_DEVICE 0x21#define CS_CONFIGURATION 0x22#define CS_STRING 0x23#define CS_INTERFACE 0x24#define CS_ENDPOINT 0x25/* VideoControl class specific interface descriptor */#define VC_DESCRIPTOR_UNDEFINED 0x00#define VC_HEADER 0x01#define VC_INPUT_TERMINAL 0x02#define VC_OUTPUT_TERMINAL 0x03#define VC_SELECTOR_UNIT 0x04#define VC_PROCESSING_UNIT 0x05#define VC_EXTENSION_UNIT 0x06/* VideoStreaming class specific interface descriptor */#define VS_UNDEFINED 0x00#define VS_INPUT_HEADER 0x01#define VS_OUTPUT_HEADER 0x02#define VS_STILL_IMAGE_FRAME 0x03#define VS_FORMAT_UNCOMPRESSED 0x04#define VS_FRAME_UNCOMPRESSED 0x05#define VS_FORMAT_MJPEG 0x06#define VS_FRAME_MJPEG 0x07#define VS_FORMAT_MPEG2TS 0x0a#define VS_FORMAT_DV 0x0c#define VS_COLORFORMAT 0x0d#define VS_FORMAT_FRAME_BASED 0x10#define VS_FRAME_FRAME_BASED 0x11#define VS_FORMAT_STREAM_BASED 0x12/* Endpoint type */#define EP_UNDEFINED 0x00#define EP_GENERAL 0x01#define EP_ENDPOINT 0x02#define EP_INTERRUPT 0x03/* Request codes */#define RC_UNDEFINED 0x00#define SET_CUR 0x01#define GET_CUR 0x81#define GET_MIN 0x82#define GET_MAX 0x83#define GET_RES 0x84#define GET_LEN 0x85#define GET_INFO 0x86#define GET_DEF 0x87/* VideoControl interface controls */#define VC_CONTROL_UNDEFINED 0x00#define VC_VIDEO_POWER_MODE_CONTROL 0x01#define VC_REQUEST_ERROR_CODE_CONTROL 0x02/* Terminal controls */#define TE_CONTROL_UNDEFINED 0x00/* Selector Unit controls */#define SU_CONTROL_UNDEFINED 0x00#define SU_INPUT_SELECT_CONTROL 0x01/* Camera Terminal controls */#define CT_CONTROL_UNDEFINED 0x00#define CT_SCANNING_MODE_CONTROL 0x01#define CT_AE_MODE_CONTROL 0x02#define CT_AE_PRIORITY_CONTROL 0x03#define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04#define CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05#define CT_FOCUS_ABSOLUTE_CONTROL 0x06#define CT_FOCUS_RELATIVE_CONTROL 0x07#define CT_FOCUS_AUTO_CONTROL 0x08#define CT_IRIS_ABSOLUTE_CONTROL 0x09#define CT_IRIS_RELATIVE_CONTROL 0x0a#define CT_ZOOM_ABSOLUTE_CONTROL 0x0b#define CT_ZOOM_RELATIVE_CONTROL 0x0c#define CT_PANTILT_ABSOLUTE_CONTROL 0x0d#define CT_PANTILT_RELATIVE_CONTROL 0x0e#define CT_ROLL_ABSOLUTE_CONTROL 0x0f#define CT_ROLL_RELATIVE_CONTROL 0x10#define CT_PRIVACY_CONTROL 0x11/* Processing Unit controls */#define PU_CONTROL_UNDEFINED 0x00#define PU_BACKLIGHT_COMPENSATION_CONTROL 0x01#define PU_BRIGHTNESS_CONTROL 0x02#define PU_CONTRAST_CONTROL 0x03#define PU_GAIN_CONTROL 0x04#define PU_POWER_LINE_FREQUENCY_CONTROL 0x05#define PU_HUE_CONTROL 0x06#define PU_SATURATION_CONTROL 0x07#define PU_SHARPNESS_CONTROL 0x08#define PU_GAMMA_CONTROL 0x09#define PU_WHITE_BALANCE_TEMPERATURE_CONTROL 0x0a#define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL 0x0b#define PU_WHITE_BALANCE_COMPONENT_CONTROL 0x0c#define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL 0x0d#define PU_DIGITAL_MULTIPLIER_CONTROL 0x0e#define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL 0x0f#define PU_HUE_AUTO_CONTROL 0x10#define PU_ANALOG_VIDEO_STANDARD_CONTROL 0x11#define PU_ANALOG_LOCK_STATUS_CONTROL 0x12#define LXU_MOTOR_PANTILT_RELATIVE_CONTROL 0x01#define LXU_MOTOR_PANTILT_RESET_CONTROL 0x02/* VideoStreaming interface controls */#define VS_CONTROL_UNDEFINED 0x00#define VS_PROBE_CONTROL 0x01#define VS_COMMIT_CONTROL 0x02#define VS_STILL_PROBE_CONTROL 0x03#define VS_STILL_COMMIT_CONTROL 0x04#define VS_STILL_IMAGE_TRIGGER_CONTROL 0x05#define VS_STREAM_ERROR_CODE_CONTROL 0x06#define VS_GENERATE_KEY_FRAME_CONTROL 0x07#define VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08#define VS_SYNC_DELAY_CONTROL 0x09#define TT_VENDOR_SPECIFIC 0x0100#define TT_STREAMING 0x0101/* Input Terminal types */#define ITT_VENDOR_SPECIFIC 0x0200#define ITT_CAMERA 0x0201#define ITT_MEDIA_TRANSPORT_INPUT 0x0202/* Output Terminal types */#define OTT_VENDOR_SPECIFIC 0x0300#define OTT_DISPLAY 0x0301#define OTT_MEDIA_TRANSPORT_OUTPUT 0x0302#define EXTERNAL_VENDOR_SPECIFIC 0x0400#define COMPOSITE_CONNECTOR 0x0401#define SVIDEO_CONNECTOR 0x0402#define COMPONENT_CONNECTOR 0x0403#define UVC_ENTITY_IS_UNIT(entity) ((entity->type & 0xff00) == 0)#define UVC_ENTITY_IS_TERM(entity) ((entity->type & 0xff00) != 0)#define UVC_ENTITY_IS_ITERM(entity) ((entity->type & 0xff00) == ITT_VENDOR_SPECIFIC)#define UVC_ENTITY_IS_OTERM(entity) ((entity->type & 0xff00) == OTT_VENDOR_SPECIFIC)/* ------------------------------------------------------------------------ * GUIDs */#define UVC_GUID_UVC_CAMERA {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}#define UVC_GUID_UVC_OUTPUT {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}#define UVC_GUID_UVC_PROCESSING {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}#define UVC_GUID_UVC_SELECTOR {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}#define UVC_GUID_LOGITECH_XU1 {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1d}#define UVC_GUID_LOGITECH_XU2 {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e}#define UVC_GUID_LOGITECH_XU3 {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1f}#define UVC_GUID_LOGITECH_MOTOR {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x56}#define UVC_GUID_LOGITECH_DEV_INFO \ {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e}#define UVC_GUID_FORMAT_MJPEG {0x4d, 0x4a, 0x50, 0x47, 0x00, 0x00, 0x10, 0x00, \ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}#define UVC_GUID_FORMAT_YUY2 {0x59, 0x55, 0x59, 0x32, 0x00, 0x00, 0x10, 0x00, \ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}#define UVC_GUID_FORMAT_NV12 {0x4e, 0x56, 0x31, 0x32, 0x00, 0x00, 0x10, 0x00, \ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}/* ------------------------------------------------------------------------ * Driver specific constants. */#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0)/* Number of isochronous URBs. */#define UVC_URBS 5/* Maximum number of packets per isochronous URB. */#define UVC_MAX_ISO_PACKETS 40/* Maximum frame size in bytes, for sanity checking. */#define UVC_MAX_FRAME_SIZE (16*1024*1024)/* Maximum number of video buffers. */#define UVC_MAX_VIDEO_BUFFERS 32#define UVC_CTRL_TIMEOUT 300/* Devices quirks */#define UVC_QUIRK_STATUS_INTERVAL 0x00000001////////////////////////////////////////////////////////////////////////////////////////////#define vmuvc__________________________________________________________________#define USB_DEVICE_QUALIFIER_DESCRIPTOR_TYPE 0x06#define USB_OTHER_SPEED_CONFIGURATION_DESCRIPTOR_TYPE 0x07#define USB_INTERFACE_POWER_DESCRIPTOR_TYPE 0x08#define USB_OTG_DESCRIPTOR_TYPE 0x09#define USB_DEBUG_DESCRIPTOR_TYPE 0x0A#define USB_INTERFACE_ASSOCIATION_DESCRIPTOR_TYPE 0x0B// Video Interface Class Code (A.1)#define USBVC_CC_VIDEO 0x0E// Video Interface Subclass Codes (A.2)#define USBVC_SC_UNDEFINED 0x00#define USBVC_SC_VIDEOCONTROL 0x01#define USBVC_SC_VIDEOSTREAMING 0x02// Video Interaface Protocol Codes (A.3)#define USBVC_PC_PROTOCOL_UNDEFINED 0x00// Video Class-Specific Descriptor Types (A.4)#define USBVC_CS_UNDEFINED_DESCRIPTOR_TYPE 0x20#define USBVC_CS_DEVICE_DESCRIPTOR_TYPE 0x21#define USBVC_CS_CONFIGURATION_DESCRIPTOR_TYPE 0x22#define USBVC_CS_STRING_DESCRIPTOR_TYPE 0x23#define USBVC_CS_INTERFACE_DESCRIPTOR_TYPE 0x24#define USBVC_CS_ENDPOINT_DESCRIPTOR_TYPE 0x25// Video Class-Specific VC Interface Descriptor Subtypes (A.5)#define USBVC_VC_UNDEFINED_DESCRIPTOR_SUBTYPE 0x00#define USBVC_VC_HEADER_DESCRIPTOR_SUBTYPE 0x01#define USBVC_VC_INPUT_TERMINAL_DESCRIPTOR_SUBTYPE 0x02#define USBVC_VC_OUTPUT_TERMINAL_DESCRIPTOR_SUBTYPE 0x03#define USBVC_VC_SELECTOR_UNIT_DESCRIPTOR_SUBTYPE 0x04#define USBVC_VC_PROCESSING_UNIT_DESCRIPTOR_SUBTYPE 0x05#define USBVC_VC_EXTENSION_UNIT_DESCRIPTOR_SUBTYPE 0x06// Video Class-Specific VS Interface Descriptor Subtypes (A.6)#define USBVC_VS_UNDEFINED_DESCRIPTOR_SUBTYPE 0x00#define USBVC_VS_INPUT_HEADER_DESCRIPTOR_SUBTYPE 0x01#define USBVC_VS_OUTPUT_HEADER_DESCRIPTOR_SUBTYPE 0x02#define USBVC_VS_STILL_IMAGE_FRAME_DESCRIPTOR_SUBTYPE 0x03#define USBVC_VS_FORMAT_UNCOMPRESSED_DESCRIPTOR_SUBTYPE 0x04#define USBVC_VS_FRAME_UNCOMPRESSED_DESCRIPTOR_SUBTYPE 0x05#define USBVC_VS_FORMAT_MJPEG_DESCRIPTOR_SUBTYPE 0x06#define USBVC_VS_FRAME_MJPEG_DESCRIPTOR_SUBTYPE 0x07#define USBVC_VS_FORMAT_MPEG1_DESCRIPTOR_SUBTYPE 0x08#define USBVC_VS_FORMAT_MPEG2PS_DESCRIPTOR_SUBTYPE 0x09#define USBVC_VS_FORMAT_MPEG2TS_DESCRIPTOR_SUBTYPE 0x0A#define USBVC_VS_FORMAT_MPEG4SL_DESCRIPTOR_SUBTYPE 0x0B#define USBVC_VS_FORMAT_DV_DESCRIPTOR_SUBTYPE 0x0C#define USBVC_VS_COLORFORMAT_DESCRIPTOR_SUBTYPE 0x0D#define USBVC_VS_FORMAT_VENDOR_DESCRIPTOR_SUBTYPE 0x0E#define USBVC_VS_FRAME_VENDOR_DESCRIPTOR_SUBTYPE 0x0F// Video Class-Specific Endpoint Descriptor Subtypes (A.7)#define USBVC_EP_UNDEFINED_DESCRIPTOR_SUBTYPE 0x00#define USBVC_EP_GENERAL_DESCRIPTOR_SUBTYPE 0x01#define USBVC_EP_ENDPOINT_DESCRIPTOR_SUBTYPE 0x02#define USBVC_EP_INTERRUPT_DESCRIPTOR_SUBTYPE 0x03// Video Class-Specific Request Codes (A.8)#define USBVC_RC_UNDEFINED 0x00#define USBVC_SET_CUR 0x01#define USBVC_GET_CUR 0x81#define USBVC_GET_MIN 0x82#define USBVC_GET_MAX 0x83#define USBVC_GET_RES 0x84#define USBVC_GET_LEN 0x85#define USBVC_GET_INFO 0x86#define USBVC_GET_DEF 0x87// VideoControl Interface Control Selectors (A.9.1)#define USBVC_VC_UNDEFINED_CONTROL 0x00#define USBVC_VC_VIDEO_POWER_MODE_CONTROL 0x01#define USBVC_VC_REQUEST_ERROR_CODE_CONTROL 0x02#define USBVC_VC_REQUEST_INDICATE_HOST_CLOCK_CONTROL 0x03// Terminal Control Selectors (A.9.2)#define USBVC_VC_TE_CONTROL_UNDEFINED 0x00//Selector Unit Control Selectors (A.9.3)#define USBVC_VC_SU_CONTROL_UNDEFINED 0x00#define USBVC_VC_SU_INPUT_SELECT_CONTROL 0x01// Camera Terminal Control Selectors (A.9.4)#define USBVC_CT_CONTROL_UNDEFINED 0x00#define USBVC_CT_SCANNING_MODE_CONTROL 0x01#define USBVC_CT_AE_MODE_CONTROL 0x02#define USBVC_CT_AE_PRIORITY_CONTROL 0x03#define USBVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04#define USBVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05#define USBVC_CT_FOCUS_ABSOLUTE_CONTROL 0x06#define USBVC_CT_FOCUS_RELATIVE_CONTROL 0x07#define USBVC_CT_FOCUS_AUTO_CONTROL 0x08#define USBVC_CT_IRIS_ABSOLUTE_CONTROL 0x09#define USBVC_CT_IRIS_RELATIVE_CONTROL 0x0A#define USBVC_CT_ZOOM_ABSOLUTE_CONTROL 0x0B#define USBVC_CT_ZOOM_RELATIVE_CONTROL 0x0C#define USBVC_CT_PANTILT_ABSOLUTE_CONTROL 0x0D#define USBVC_CT_PANTILT_RELATIVE_CONTROL 0x0E#define USBVC_CT_ROLL_ABSOLUTE_CONTROL 0x0F#define USBVC_CT_ROLL_RELATIVE_CONTROL 0x10#define USBVC_CT_PRIVACY_CONTROL 0x11// Processing Unit Control Selectors (A.9.5)#define USBVC_PU_CONTROL_UNDEFINED 0x00#define USBVC_PU_BACKLIGHT_COMPENSATION_CONTROL 0x01#define USBVC_PU_BRIGHTNESS_CONTROL 0x02#define USBVC_PU_CONTRAST_CONTROL 0x03#define USBVC_PU_GAIN_CONTROL 0x04#define USBVC_PU_POWER_LINE_FREQUENCY_CONTROL 0x05#define USBVC_PU_HUE_CONTROL 0x06#define USBVC_PU_SATURATION_CONTROL 0x07#define USBVC_PU_SHARPNESS_CONTROL 0x08#define USBVC_PU_GAMMA_CONTROL 0x09 #define USBVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL 0x0A#define USBVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL 0x0B#define USBVC_PU_WHITE_BALANCE_COMPONENT_CONTROL 0x0C#define USBVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL 0x0D#define USBVC_PU_DIGITAL_MULTIPLIER_CONTROL 0x0E#define USBVC_PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL 0x0F#define USBVC_PU_HUE_AUTO_CONTROL 0x10// Extension Unit Control Selectors (A.9.6)#define USBVC_XU_UNDEFINED_CONTROL 0x00// VideoStreaming Interface Control Selector (A.9.7)#define USBVC_VS_CONTROL_UNDEFINED 0x00#define USBVC_VS_PROBE_CONTROL 0x01#define USBVC_VS_COMMIT_CONTROL 0x02#define USBVC_VS_STILL_PROBE_CONTROL 0x03#define USBVC_VS_STILL_COMMIT_CONTROL 0x04#define USBVC_VS_STILL_IMAGE_TRIGGER_CONTROL 0x05#define USBVC_VS_STREAM_ERROR_CODE_CONTROL 0x06#define USBVC_VS_GENERATE_KEY_FRAME_CONTROL 0x07#define USBVC_VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08#define USBVC_VS_SYNC_DELAY_CONTROL 0x09// USB Terminal Types (B.1)#define USBVC_TT_VENDOR_SPECIFIC 0x0100#define USBVC_TT_STREAMING 0x0101// Input Terminal Types (B.2)#define USBVC_ITT_VENDOR_SPECIFIC 0x0200#define USBVC_ITT_CAMERA 0x0201#define USBVC_ITT_MEDIA_TRANSPORT_INPUT 0x0202// Output Terminal Types (B.3)#define USBVC_OTT_VENDOR_SPECIFIC 0x0300#define USBVC_OTT_DISPLAY 0x0301#define USBVC_OTT_MEDIA_TRANSPORT_OUTPUT 0x0302// External Terminal Types (B.4)#define USBVC_EXTERNAL_VENDOR_SPECIFIC 0x0400#define USBVC_COMPOSITE_CONNECTOR 0x0401#define USBVC_SVIDEO_CONNECTOR 0x0402#define USBVC_COMPONENT_CONNECTOR 0x0403// Rwquest Error Code Control Error Codes (4.2.1.2)#define USBVC_ERROR_CODE_NO_ERRROR 0x00#define USBVC_ERROR_CODE_NOT_READY 0x01#define USBVC_ERROR_CODE_WRONG_STATE 0x02#define USBVC_ERROR_CODE_POWER 0x03#define USBVC_ERROR_CODE_OUT_OF_RANGE 0x04#define USBVC_ERROR_CODE_INVALID_UNIT 0x05#define USBVC_ERROR_CODE_INVALID_CONTROL 0X06#define USBVC_ERROR_CODE_INVALID_REQUEST 0X07#define USBVC_ERROR_CODE_UNKNOWN 0XFFenum { EU_FLIP_CONTROL = 0x01, EU_AF_AREA_CONTROL = 0x02, EU_DETECT_AUDIO_STREAM = 0x03, EU_REG_CONTROL = 0x04, EU_IIC_DEVICE_REGISTER = 0x05, EU_SENSOR_IDENTIFICATION_CONTROL = 0x06, EU_FIREWARE_VERSION = 0x07, EU_POWER_LINE_FREQUENCY_CONTROL = 0x09, EU_MAX_SUPPORT};#define CS_INTERFACE 0x24#define VC_INPUT_HEADER 0x01#define VC_INPUT_TERMINAL 0x02#define VC_PROCESSING_UNIT 0x05#define VC_EXTENSION_UNIT 0x06#define VS_INPUT_HEADER 0x01#define VS_FORMAT_UNCOMPRESSED 0x04#define VS_FRAME_UNCOMPRESSED 0x05#define VS_FORMAT_MJPEG 0x06#define VS_FRAME_MJPEG 0x07#undef vmuvc__________________________________________________________________/* ------------------------------------------------------------------------ * Structures. */struct uvc_device;/* TODO: Put the most frequently accessed fields at the beginning of * structures to maximize cache efficiency. */struct uvc_streaming_control { __u16 bmHint; __u8 bFormatIndex;⌨️ 快捷键说明
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