PgVideoChannel_t

Data structure that describes a video overlay channel

Synopsis:

typedef struct pg_scaler_channel {
    PdOffscreenContext_t    *yplane1;
    PdOffscreenContext_t    *uplane1;
    PdOffscreenContext_t    *vplane1;
    PdOffscreenContext_t    *yplane2;
    PdOffscreenContext_t    *uplane2;
    PdOffscreenContext_t    *vplane2;
    unsigned                 flags;
    int                      chid;
} PgVideoChannel_t;

Description:

This data structure describes a video overlay channel. It includes at least:

yplane1

A pointer to an offscreen context describing the primary video buffer, if the format is not a Planar YUV format, or the primary Y data buffer for a Planar YUV format.

uplane1

A pointer to an offscreen context describing the primary U data buffer for a Planar YUV format. It's used only for Planar YUV formats.

vplane1

A pointer to an offscreen context describing the primary V data buffer for a Planar YUV format. It's used only for Planar YUV formats.

yplane2

A pointer to an offscreen context describing the secondary video buffer, if the format is not a Planar YUV format, or the secondary Y data buffer for a Planar YUV format.

uplane2

A pointer to an offscreen context describing the secondary the secondary U data buffer for a Planar YUV format. It's used only for Planar YUV formats.

vplane2

A pointer to an offscreen context describing the secondary the secondary V data buffer for a Planar YUV format. It's used only for Planar YUV formats.

flags

No flags are currently defined.

chid

Internal use only.

Classification:

Photon

See also:

PdOffscreenContext_t, PgConfigScalerChannel(), PgCreateVideoChannel(), PgDestroyVideoChannel(), PgGetOverlayChromaColor(), PgGetScalerCapabilities(), PgNextVideoFrame(), PgScalerCaps_t, PgScalerProps_t

“Video overlay” in the Raw Drawing and Animation chapter of the Photon Programmer's Guide