FBIOPUT_SHOW_HIFB

Product	Supported
Ascend 950PR/Ascend 950DT	☓
Atlas A3 training products/Atlas A3 inference products	☓
Atlas A2 training products/Atlas A2 inference products	☓
Atlas 200I/500 A2 inference products	√
Atlas inference products	☓
Atlas training products	☓

Displays or hides an overlaid layer.

int ioctl (int fd, FBIOPUT_SHOW_HIFB, hi_bool *bshow)

Parameter	Input/Output	Description
fd	Input	File descriptor of an FB device. When open("/dev/fbx") is called in the application, the file descriptor of the FB device corresponding to the current VO device is returned.
FBIOPUT_SHOW_HIFB	Input	ioctl number.
bshow	Input	Pointer to the display status. HI_TRUE: Displays the overlaid layer. HI_FALSE: Hides the overlaid layer.

Parameter

Input/Output

Description

Input

File descriptor of an FB device.

When open("/dev/fbx") is called in the application, the file descriptor of the FB device corresponding to the current VO device is returned.

FBIOPUT_SHOW_HIFB

Input

ioctl number.

bshow

Input

Pointer to the display status.

Before using the HiFB API, you need to call hi_mpi_vo_enable to enable the VO device.

Parent topic: HiFB for Managing Overlaid Graphics Layers