hi_rgn_overlayex_chn_attr

Description

Defines the channel display attributes of an OverlayEx region.

Prototype

typedef struct {
    hi_point      point;
    hi_u32        fg_alpha;
    hi_u32        bg_alpha;
    hi_u32        layer;   
} hi_rgn_overlayex_chn_attr;

Members

Member	Description
point	Region position This is a dynamic attribute. Region location value range (coordinates): X: [0, 16382], 2-pixel aligned. Y: [0, 16382], 2-pixel aligned.
fg_alpha	Transparency of the pixel whose alpha bit is 1, which is called foreground alpha. This is a dynamic attribute. Value range: [0, 255] A smaller value indicates higher transparency. This parameter is mandatory only when the OSD image format is HI_PIXEL_FORMAT_ARGB_1555.
bg_alpha	Transparency of the pixel whose alpha bit is 0, which is called background alpha. This is a dynamic attribute. Value range: [0, 255] A smaller value indicates higher transparency. This parameter is mandatory only when the OSD image format is HI_PIXEL_FORMAT_ARGB_1555.
layer	Region layer. This is a dynamic attribute. Value range: [0, Maximum number of supported OverlayEx regions – 1], that is, the value range depends on the maximum number of OverlayEx regions supported by each module. A larger value indicates a higher region layer.

Parent topic: Region Management