Class UVCD

UVCD Class

Description

A class for USB UVC device API.

Syntax

class UVCD

Members

Public Constructors
UVCD::UVCD	Constructs a UVCD object. Initialize/Re-initialize of using USB UVC device.
Public Methods
UVCD::isUsbUvcConnected	Check if the UVC device is connected to PC and video stream.
UVCD::configVideo	Start config video of using USB UVC device.
UVCD::nnbegin	Begin video streaming of using USB UVC device for object detection.
UVCD::begin	Begin video streaming of using USB UVC device.

UVCD::UVCD

Description

Constructs a UVCD object. Initialize/Re-initialize of using USB UVC device.

Syntax

UVCD(void);
UVCD(const char *usb_uvcd_driver_name);

Parameters

usb_uvcd_driver_name: A string of user defined USB UVC device driver name.

Returns

NA

Example Code

Example: UVC_Device

Note

“UVCD.h”, “StreamIO.h” and “VideoStream.h” must be included to use the class function.

UVCD::isUsbUvcConnected

Description

Check if the UVC device is connected to PC or video stream.

Syntax

int isUsbUvcConnected(int uvcd_getctx_state);

Parameters

uvcd_getctx_state: A return integer value of 1 if the UVC device is connected to PC, 0 otherwise.

Returns

This function returns 1 if the video stream module is initialized and UVC device is connected to PC, 0 otherwise.

Example Code

Example: UVCDObjectDetectionLoop

Note

“UVCD.h” and “VideoStream.h” must be included to use the class function.

UVCD::configVideo

Description

Start config video of using USB UVC device.

Syntax

void configVideo(VideoSetting &config);

Parameters

config: pointer of VideoSetting

Returns

NA

Example Code

Example: UVC_Device

Note

“UVCD.h”, “StreamIO.h” and “VideoStream.h” must be included to use the class function.

UVCD::nnbegin

Description

Begin video streaming of using USB UVC device for object detection.

Syntax

void nnbegin(const MMFModule &module_videocam, void *module_videolinker, int uvcd_channel, int nn_channel, int uvcd_getctx_check);

Parameters

module_videocam: stream data from camera video.

module_videolinker: StreamIO object for uvcd.

uvcd_channel: video channel.

nn_channel: neural network channel.

uvcd_getctx_check: A return integer value of 1 if the UVC device is connected to PC, 0 otherwise.

Returns

NA

Example Code

Example: UVCDObjectDetectionLoop

Note

“UVCD.h”, “StreamIO.h” and “VideoStream.h” must be included to use the class function.

UVCD::begin

Description

Begin video streaming of using USB UVC device.

Syntax

void begin(const MMFModule &module_videocam, void *module_videolinker, int uvcd_channel);

Parameters

module_videocam: stream data from camera video.

module_videolinker: StreamIO object for uvcd.

uvcd_channel: video channel.

Returns

NA

Example Code

Example: UVC_Device

Note

“UVCD.h”, “StreamIO.h” and “VideoStream.h” must be included to use the class function.