disp_vid_alpha_t

A region of the video viewport to be blended with the desktop

Synopsis:

#include <vid.h>

typedef struct {
    unsigned char    src_alpha;
    unsigned char    dst_alpha;
    unsigned         alpha_mode;
    unsigned short   x1;
    unsigned short   x2;
    unsigned short   y1;
    unsigned short   y2;
} disp_vid_alpha_t;

Description:

The disp_vid_alpha_t structure describes a region of the video viewport to be blended with desktop. The members include:

src_alpha

The source alpha blending factor.

dst_alpha

The destination alpha blending factor.

alpha_mode

The alpha blending mode. The description of this field is the same as for the alpha_mode member of the disp_draw_context_t structure.

x1

The offset of the left hand side of the region to be blended, in pixels, relative to the left hand side of the scaler viewport.

y1

The offset of the top scanline of the region to be blended, in pixels, relative to the top of the scaler viewport.

x2

The offset of the right-hand side of the region to be blended, in pixels, relative to the left hand side of the scaler viewport.

y2

The offset of the bottom scanline of the region to be blended, in pixels, relative to the top of the scaler viewport.

Classification:

Photon

See also:

disp_draw_context_t, disp_vidfuncs_t, disp_vid_channel_props_t