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GStreamer Base Plugins 0.10 Library Reference Manual | ![]() |
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#include <gst/video/gstvideosink.h> GstVideoSink; GstVideoSinkClass; GstVideoRectangle; #define GST_VIDEO_SINK_HEIGHT (obj) #define GST_VIDEO_SINK_PAD (obj) #define GST_VIDEO_SINK_WIDTH (obj) void gst_video_sink_center_rect (GstVideoRectangle src, GstVideoRectangle dst, GstVideoRectangle *result, gboolean scaling);
Provides useful functions and a base class for video sinks.
GstVideoSink will configure the default base sink to drop frames that arrive later than 20ms as this is considered the default threshold for observing out-of-sync frames.
typedef struct { GstBaseSinkClass parent_class; gpointer _gst_reserved[GST_PADDING]; } GstVideoSinkClass;
typedef struct { gint x; gint y; gint w; gint h; } GstVideoRectangle;
Helper structure representing a rectangular area.
gint x; | X coordinate of rectangle's top-left point |
gint y; | Y coordinate of rectangle's top-left point |
gint w; | width of the rectangle |
gint h; | height of the rectangle |
#define GST_VIDEO_SINK_HEIGHT(obj) (GST_VIDEO_SINK_CAST (obj)->height)
obj : |
#define GST_VIDEO_SINK_PAD(obj) GST_BASE_SINK_PAD(obj)
Get the sink GstPad of obj.
obj : | a GstVideoSink |
void gst_video_sink_center_rect (GstVideoRectangle src, GstVideoRectangle dst, GstVideoRectangle *result, gboolean scaling);
Takes src rectangle and position it at the center of dst rectangle with or without scaling. It handles clipping if the src rectangle is bigger than the dst one and scaling is set to FALSE.
src : | the GstVideoRectangle describing the source area |
dst : | the GstVideoRectangle describing the destination area |
result : | a pointer to a GstVideoRectangle which will receive the result area |
scaling : | a gboolean indicating if scaling should be applied or not |