FBIOGET_SCREEN_ORIGIN_HIFB
Applicable Products
Product |
Supported |
|---|---|
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√ |
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☓ |
Function
Obtains the coordinates of the start point of an overlaid layer displayed on the screen.
Prototype
int ioctl (int fd, FBIOGET_SCREEN_ORIGIN_HIFB, hi_fb_point *point)
Parameters
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. |
FBIOGET_SCREEN_ORIGIN_HIFB |
Input |
ioctl number. |
point |
Output |
Pointer to the coordinate structure of the start point. |
Returns
- 0: success
- Other values: failure
Restrictions
- Before using the HiFB API, you need to call hi_mpi_vo_enable to enable the VO device.
- This API does not support multiple processes or multiple threads.
Parent topic: HiFB for Managing Overlaid Graphics Layers