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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>GstVideoOverlayRectangle: GStreamer Base Plugins 1.0 Library Reference Manual</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
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<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Library Reference Manual">
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<link rel="up" href="gstreamer-video.html" title="Video Library">
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<link rel="prev" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html" title="gstvideoaffinetransformationmeta">
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<link rel="next" href="GstVideoFilter.html" title="GstVideoFilter">
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<meta name="generator" content="GTK-Doc V1.27 (XML mode)">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Top |
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Description
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GstVideoOverlayRectangle
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GstVideoOverlayRectangle — Video Buffer Overlay Compositions (Subtitles, Logos)
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Functions
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GstVideoOverlayComposition *
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gst_video_overlay_composition_new ()
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GstVideoOverlayComposition *
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gst_video_overlay_composition_ref ()
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void
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gst_video_overlay_composition_unref ()
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void
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gst_video_overlay_composition_add_rectangle ()
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guint
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gst_video_overlay_composition_n_rectangles ()
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GstVideoOverlayRectangle *
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gst_video_overlay_composition_get_rectangle ()
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guint
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gst_video_overlay_composition_get_seqnum ()
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GstVideoOverlayComposition *
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gst_video_overlay_composition_copy ()
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GstVideoOverlayComposition *
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gst_video_overlay_composition_make_writable ()
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gboolean
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gst_video_overlay_composition_blend ()
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const GstMetaInfo *
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gst_video_overlay_composition_meta_get_info ()
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GstVideoOverlayCompositionMeta *
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gst_buffer_add_video_overlay_composition_meta ()
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#define
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gst_buffer_get_video_overlay_composition_meta()
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#define
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gst_buffer_remove_video_overlay_composition_meta()
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GstVideoOverlayRectangle *
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gst_video_overlay_rectangle_new_raw ()
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GstVideoOverlayRectangle *
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gst_video_overlay_rectangle_ref ()
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void
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gst_video_overlay_rectangle_unref ()
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GstBuffer *
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gst_video_overlay_rectangle_get_pixels_raw ()
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GstBuffer *
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gst_video_overlay_rectangle_get_pixels_argb ()
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GstBuffer *
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gst_video_overlay_rectangle_get_pixels_ayuv ()
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GstBuffer *
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gst_video_overlay_rectangle_get_pixels_unscaled_raw ()
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GstBuffer *
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gst_video_overlay_rectangle_get_pixels_unscaled_argb ()
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GstBuffer *
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gst_video_overlay_rectangle_get_pixels_unscaled_ayuv ()
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gboolean
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gst_video_overlay_rectangle_get_render_rectangle ()
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guint
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gst_video_overlay_rectangle_get_seqnum ()
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void
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gst_video_overlay_rectangle_set_render_rectangle ()
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GstVideoOverlayRectangle *
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gst_video_overlay_rectangle_copy ()
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GstVideoOverlayFormatFlags
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gst_video_overlay_rectangle_get_flags ()
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gfloat
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gst_video_overlay_rectangle_get_global_alpha ()
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void
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gst_video_overlay_rectangle_set_global_alpha ()
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Types and Values
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GstVideoOverlayComposition
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#define
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GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS
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struct
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GstVideoOverlayCompositionMeta
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enum
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GstVideoOverlayFormatFlags
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GstVideoOverlayRectangle
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Includes
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#include <gst/video/video-overlay-composition.h>
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Description
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Functions to create and handle overlay compositions on video buffers.
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An overlay composition describes one or more overlay rectangles to be
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blended on top of a video buffer.
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This API serves two main purposes:
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it can be used to attach overlay information (subtitles or logos)
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to non-raw video buffers such as GL/VAAPI/VDPAU surfaces. The actual
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blending of the overlay can then be done by e.g. the video sink that
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processes these non-raw buffers.
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it can also be used to blend overlay rectangles on top of raw video
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buffers, thus consolidating blending functionality for raw video in
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one place.
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Together, this allows existing overlay elements to easily handle raw
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and non-raw video as input in without major changes (once the overlays
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have been put into a GstOverlayComposition object anyway) - for raw
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video the overlay can just use the blending function to blend the data
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on top of the video, and for surface buffers it can just attach them to
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the buffer and let the sink render the overlays.
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Functions
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gst_video_overlay_composition_new ()
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GstVideoOverlayComposition *
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gst_video_overlay_composition_new (GstVideoOverlayRectangle *rectangle);
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Creates a new video overlay composition object to hold one or more
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overlay rectangles.
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Parameters
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rectangle
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a GstVideoOverlayRectangle to add to the
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composition.
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[transfer none]
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Returns
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a new GstVideoOverlayComposition. Unref with
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gst_video_overlay_composition_unref() when no longer needed.
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[transfer full]
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gst_video_overlay_composition_ref ()
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GstVideoOverlayComposition *
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gst_video_overlay_composition_ref (GstVideoOverlayComposition *comp);
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Increases the refcount of the given composition by one.
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Note that the refcount affects the writeability
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of comp
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, use gst_video_overlay_composition_make_writable() to ensure
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a composition and its rectangles can be modified.
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Parameters
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|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a a GstVideoOverlayComposition.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_unref ()
|
|
Packit |
971217 |
void
|
|
Packit |
971217 |
gst_video_overlay_composition_unref (GstVideoOverlayComposition *comp);
|
|
Packit |
971217 |
Decreases the refcount of the composition. If the refcount reaches 0, the
|
|
Packit |
971217 |
composition will be freed.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_add_rectangle ()
|
|
Packit |
971217 |
void
|
|
Packit |
971217 |
gst_video_overlay_composition_add_rectangle
|
|
Packit |
971217 |
(GstVideoOverlayComposition *comp,
|
|
Packit |
971217 |
GstVideoOverlayRectangle *rectangle);
|
|
Packit |
971217 |
Adds an overlay rectangle to an existing overlay composition object. This
|
|
Packit |
971217 |
must be done right after creating the overlay composition.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle to add to the
|
|
Packit |
971217 |
composition.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_n_rectangles ()
|
|
Packit |
971217 |
guint
|
|
Packit |
971217 |
gst_video_overlay_composition_n_rectangles
|
|
Packit |
971217 |
(GstVideoOverlayComposition *comp);
|
|
Packit |
971217 |
Returns the number of GstVideoOverlayRectangles contained in comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
the number of rectangles
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_get_rectangle ()
|
|
Packit |
971217 |
GstVideoOverlayRectangle *
|
|
Packit |
971217 |
gst_video_overlay_composition_get_rectangle
|
|
Packit |
971217 |
(GstVideoOverlayComposition *comp,
|
|
Packit |
971217 |
guint n);
|
|
Packit |
971217 |
Returns the n
|
|
Packit |
971217 |
-th GstVideoOverlayRectangle contained in comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
n
|
|
Packit |
971217 |
number of the rectangle to get
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
the n
|
|
Packit |
971217 |
-th rectangle, or NULL if n
|
|
Packit |
971217 |
is out of
|
|
Packit |
971217 |
bounds. Will not return a new reference, the caller will need to
|
|
Packit |
971217 |
obtain her own reference using gst_video_overlay_rectangle_ref()
|
|
Packit |
971217 |
if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_get_seqnum ()
|
|
Packit |
971217 |
guint
|
|
Packit |
971217 |
gst_video_overlay_composition_get_seqnum
|
|
Packit |
971217 |
(GstVideoOverlayComposition *comp);
|
|
Packit |
971217 |
Returns the sequence number of this composition. Sequence numbers are
|
|
Packit |
971217 |
monotonically increasing and unique for overlay compositions and rectangles
|
|
Packit |
971217 |
(meaning there will never be a rectangle with the same sequence number as
|
|
Packit |
971217 |
a composition).
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
the sequence number of comp
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_copy ()
|
|
Packit |
971217 |
GstVideoOverlayComposition *
|
|
Packit |
971217 |
gst_video_overlay_composition_copy (GstVideoOverlayComposition *comp);
|
|
Packit |
971217 |
Makes a copy of comp
|
|
Packit |
971217 |
and all contained rectangles, so that it is possible
|
|
Packit |
971217 |
to modify the composition and contained rectangles (e.g. add additional
|
|
Packit |
971217 |
rectangles or change the render co-ordinates or render dimension). The
|
|
Packit |
971217 |
actual overlay pixel data buffers contained in the rectangles are not
|
|
Packit |
971217 |
copied.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition to copy.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a new GstVideoOverlayComposition equivalent
|
|
Packit |
971217 |
to comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_make_writable ()
|
|
Packit |
971217 |
GstVideoOverlayComposition *
|
|
Packit |
971217 |
gst_video_overlay_composition_make_writable
|
|
Packit |
971217 |
(GstVideoOverlayComposition *comp);
|
|
Packit |
971217 |
Takes ownership of comp
|
|
Packit |
971217 |
and returns a version of comp
|
|
Packit |
971217 |
that is writable
|
|
Packit |
971217 |
(i.e. can be modified). Will either return comp
|
|
Packit |
971217 |
right away, or create a
|
|
Packit |
971217 |
new writable copy of comp
|
|
Packit |
971217 |
and unref comp
|
|
Packit |
971217 |
itself. All the contained
|
|
Packit |
971217 |
rectangles will also be copied, but the actual overlay pixel data buffers
|
|
Packit |
971217 |
contained in the rectangles are not copied.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition to copy.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a writable GstVideoOverlayComposition
|
|
Packit |
971217 |
equivalent to comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_blend ()
|
|
Packit |
971217 |
gboolean
|
|
Packit |
971217 |
gst_video_overlay_composition_blend (GstVideoOverlayComposition *comp,
|
|
Packit |
971217 |
GstVideoFrame *video_buf);
|
|
Packit |
971217 |
Blends the overlay rectangles in comp
|
|
Packit |
971217 |
on top of the raw video data
|
|
Packit |
971217 |
contained in video_buf
|
|
Packit |
971217 |
. The data in video_buf
|
|
Packit |
971217 |
must be writable and
|
|
Packit |
971217 |
mapped appropriately.
|
|
Packit |
971217 |
Since video_buf
|
|
Packit |
971217 |
data is read and will be modified, it ought be
|
|
Packit |
971217 |
mapped with flag GST_MAP_READWRITE.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
video_buf
|
|
Packit |
971217 |
a GstVideoFrame containing raw video data in a
|
|
Packit |
971217 |
supported format. It should be mapped using GST_MAP_READWRITE
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_composition_meta_get_info ()
|
|
Packit |
971217 |
const GstMetaInfo *
|
|
Packit |
971217 |
gst_video_overlay_composition_meta_get_info
|
|
Packit |
971217 |
(void);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_buffer_add_video_overlay_composition_meta ()
|
|
Packit |
971217 |
GstVideoOverlayCompositionMeta *
|
|
Packit |
971217 |
gst_buffer_add_video_overlay_composition_meta
|
|
Packit |
971217 |
(GstBuffer *buf,
|
|
Packit |
971217 |
GstVideoOverlayComposition *comp);
|
|
Packit |
971217 |
Sets an overlay composition on a buffer. The buffer will obtain its own
|
|
Packit |
971217 |
reference to the composition, meaning this function does not take ownership
|
|
Packit |
971217 |
of comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
buf
|
|
Packit |
971217 |
a GstBuffer
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayComposition.
|
|
Packit |
971217 |
[allow-none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstVideoOverlayCompositionMeta.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_buffer_get_video_overlay_composition_meta()
|
|
Packit |
971217 |
#define gst_buffer_get_video_overlay_composition_meta(b)
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_buffer_remove_video_overlay_composition_meta()
|
|
Packit |
971217 |
#define gst_buffer_remove_video_overlay_composition_meta(b,m)
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_new_raw ()
|
|
Packit |
971217 |
GstVideoOverlayRectangle *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_new_raw (GstBuffer *pixels,
|
|
Packit |
971217 |
gint render_x,
|
|
Packit |
971217 |
gint render_y,
|
|
Packit |
971217 |
guint render_width,
|
|
Packit |
971217 |
guint render_height,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
Creates a new video overlay rectangle with ARGB or AYUV pixel data.
|
|
Packit |
971217 |
The layout in case of ARGB of the components in memory is B-G-R-A
|
|
Packit |
971217 |
on little-endian platforms
|
|
Packit |
971217 |
(corresponding to GST_VIDEO_FORMAT_BGRA) and A-R-G-B on big-endian
|
|
Packit |
971217 |
platforms (corresponding to GST_VIDEO_FORMAT_ARGB). In other words,
|
|
Packit |
971217 |
pixels are treated as 32-bit words and the lowest 8 bits then contain
|
|
Packit |
971217 |
the blue component value and the highest 8 bits contain the alpha
|
|
Packit |
971217 |
component value. Unless specified in the flags, the RGB values are
|
|
Packit |
971217 |
non-premultiplied. This is the format that is used by most hardware,
|
|
Packit |
971217 |
and also many rendering libraries such as Cairo, for example.
|
|
Packit |
971217 |
The pixel data buffer must have GstVideoMeta set.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
pixels
|
|
Packit |
971217 |
a GstBuffer pointing to the pixel memory.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_x
|
|
Packit |
971217 |
the X co-ordinate on the video where the top-left corner of this
|
|
Packit |
971217 |
overlay rectangle should be rendered to
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_y
|
|
Packit |
971217 |
the Y co-ordinate on the video where the top-left corner of this
|
|
Packit |
971217 |
overlay rectangle should be rendered to
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_width
|
|
Packit |
971217 |
the render width of this rectangle on the video
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_height
|
|
Packit |
971217 |
the render height of this rectangle on the video
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a new GstVideoOverlayRectangle. Unref with
|
|
Packit |
971217 |
gst_video_overlay_rectangle_unref() when no longer needed.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_ref ()
|
|
Packit |
971217 |
GstVideoOverlayRectangle *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_ref (GstVideoOverlayRectangle *comp);
|
|
Packit |
971217 |
Increases the refcount of the given rectangle by one.
|
|
Packit |
971217 |
Note that the refcount affects the writeability
|
|
Packit |
971217 |
of comp
|
|
Packit |
971217 |
, use gst_video_overlay_rectangle_copy() to ensure a rectangle can
|
|
Packit |
971217 |
be modified (there is no gst_video_overlay_rectangle_make_writable() because
|
|
Packit |
971217 |
it is unlikely that someone will hold the single reference to the rectangle
|
|
Packit |
971217 |
and not know that that's the case).
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a a GstVideoOverlayRectangle.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_unref ()
|
|
Packit |
971217 |
void
|
|
Packit |
971217 |
gst_video_overlay_rectangle_unref (GstVideoOverlayRectangle *comp);
|
|
Packit |
971217 |
Decreases the refcount of the rectangle. If the refcount reaches 0, the
|
|
Packit |
971217 |
rectangle will be freed.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
comp
|
|
Packit |
971217 |
a GstVideoOverlayRectangle.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_raw ()
|
|
Packit |
971217 |
GstBuffer *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_raw
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
If a global_alpha value != 1 is set for the rectangle, the caller
|
|
Packit |
971217 |
should set the GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA flag
|
|
Packit |
971217 |
if he wants to apply global-alpha himself. If the flag is not set
|
|
Packit |
971217 |
global_alpha is applied internally before returning the pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstBuffer holding the pixel data with
|
|
Packit |
971217 |
format as originally provided and specified in video meta with
|
|
Packit |
971217 |
width and height of the render dimensions as per
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle(). This function does
|
|
Packit |
971217 |
not return a reference, the caller should obtain a reference of her own
|
|
Packit |
971217 |
with gst_buffer_ref() if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_argb ()
|
|
Packit |
971217 |
GstBuffer *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_argb
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
If a global_alpha value != 1 is set for the rectangle, the caller
|
|
Packit |
971217 |
should set the GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA flag
|
|
Packit |
971217 |
if he wants to apply global-alpha himself. If the flag is not set
|
|
Packit |
971217 |
global_alpha is applied internally before returning the pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstBuffer holding the ARGB pixel data with
|
|
Packit |
971217 |
width and height of the render dimensions as per
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle(). This function does
|
|
Packit |
971217 |
not return a reference, the caller should obtain a reference of her own
|
|
Packit |
971217 |
with gst_buffer_ref() if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_ayuv ()
|
|
Packit |
971217 |
GstBuffer *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_ayuv
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
If a global_alpha value != 1 is set for the rectangle, the caller
|
|
Packit |
971217 |
should set the GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA flag
|
|
Packit |
971217 |
if he wants to apply global-alpha himself. If the flag is not set
|
|
Packit |
971217 |
global_alpha is applied internally before returning the pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstBuffer holding the AYUV pixel data with
|
|
Packit |
971217 |
width and height of the render dimensions as per
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle(). This function does
|
|
Packit |
971217 |
not return a reference, the caller should obtain a reference of her own
|
|
Packit |
971217 |
with gst_buffer_ref() if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_unscaled_raw ()
|
|
Packit |
971217 |
GstBuffer *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_unscaled_raw
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
Retrieves the pixel data as it is. This is useful if the caller can
|
|
Packit |
971217 |
do the scaling itself when handling the overlaying. The rectangle will
|
|
Packit |
971217 |
need to be scaled to the render dimensions, which can be retrieved using
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle().
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags.
|
|
Packit |
971217 |
If a global_alpha value != 1 is set for the rectangle, the caller
|
|
Packit |
971217 |
should set the GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA flag
|
|
Packit |
971217 |
if he wants to apply global-alpha himself. If the flag is not set
|
|
Packit |
971217 |
global_alpha is applied internally before returning the pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstBuffer holding the pixel data with
|
|
Packit |
971217 |
GstVideoMeta set. This function does not return a reference, the caller
|
|
Packit |
971217 |
should obtain a reference of her own with gst_buffer_ref() if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_unscaled_argb ()
|
|
Packit |
971217 |
GstBuffer *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_unscaled_argb
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
Retrieves the pixel data as it is. This is useful if the caller can
|
|
Packit |
971217 |
do the scaling itself when handling the overlaying. The rectangle will
|
|
Packit |
971217 |
need to be scaled to the render dimensions, which can be retrieved using
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle().
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags.
|
|
Packit |
971217 |
If a global_alpha value != 1 is set for the rectangle, the caller
|
|
Packit |
971217 |
should set the GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA flag
|
|
Packit |
971217 |
if he wants to apply global-alpha himself. If the flag is not set
|
|
Packit |
971217 |
global_alpha is applied internally before returning the pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstBuffer holding the ARGB pixel data with
|
|
Packit |
971217 |
GstVideoMeta set. This function does not return a reference, the caller
|
|
Packit |
971217 |
should obtain a reference of her own with gst_buffer_ref() if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_unscaled_ayuv ()
|
|
Packit |
971217 |
GstBuffer *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_pixels_unscaled_ayuv
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags flags);
|
|
Packit |
971217 |
Retrieves the pixel data as it is. This is useful if the caller can
|
|
Packit |
971217 |
do the scaling itself when handling the overlaying. The rectangle will
|
|
Packit |
971217 |
need to be scaled to the render dimensions, which can be retrieved using
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle().
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
flags
|
|
Packit |
971217 |
flags.
|
|
Packit |
971217 |
If a global_alpha value != 1 is set for the rectangle, the caller
|
|
Packit |
971217 |
should set the GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA flag
|
|
Packit |
971217 |
if he wants to apply global-alpha himself. If the flag is not set
|
|
Packit |
971217 |
global_alpha is applied internally before returning the pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a GstBuffer holding the AYUV pixel data with
|
|
Packit |
971217 |
GstVideoMeta set. This function does not return a reference, the caller
|
|
Packit |
971217 |
should obtain a reference of her own with gst_buffer_ref() if needed.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle ()
|
|
Packit |
971217 |
gboolean
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_render_rectangle
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
gint *render_x,
|
|
Packit |
971217 |
gint *render_y,
|
|
Packit |
971217 |
guint *render_width,
|
|
Packit |
971217 |
guint *render_height);
|
|
Packit |
971217 |
Retrieves the render position and render dimension of the overlay
|
|
Packit |
971217 |
rectangle on the video.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_x
|
|
Packit |
971217 |
address where to store the X render offset.
|
|
Packit |
971217 |
[out][allow-none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_y
|
|
Packit |
971217 |
address where to store the Y render offset.
|
|
Packit |
971217 |
[out][allow-none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_width
|
|
Packit |
971217 |
address where to store the render width.
|
|
Packit |
971217 |
[out][allow-none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_height
|
|
Packit |
971217 |
address where to store the render height.
|
|
Packit |
971217 |
[out][allow-none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
TRUE if valid render dimensions were retrieved.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_seqnum ()
|
|
Packit |
971217 |
guint
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_seqnum
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle);
|
|
Packit |
971217 |
Returns the sequence number of this rectangle. Sequence numbers are
|
|
Packit |
971217 |
monotonically increasing and unique for overlay compositions and rectangles
|
|
Packit |
971217 |
(meaning there will never be a rectangle with the same sequence number as
|
|
Packit |
971217 |
a composition).
|
|
Packit |
971217 |
Using the sequence number of a rectangle as an indicator for changed
|
|
Packit |
971217 |
pixel-data of a rectangle is dangereous. Some API calls, like e.g.
|
|
Packit |
971217 |
gst_video_overlay_rectangle_set_global_alpha(), automatically update
|
|
Packit |
971217 |
the per rectangle sequence number, which is misleading for renderers/
|
|
Packit |
971217 |
consumers, that handle global-alpha themselves. For them the
|
|
Packit |
971217 |
pixel-data returned by gst_video_overlay_rectangle_get_pixels_*()
|
|
Packit |
971217 |
wont be different for different global-alpha values. In this case a
|
|
Packit |
971217 |
renderer could also use the GstBuffer pointers as a hint for changed
|
|
Packit |
971217 |
pixel-data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
the sequence number of rectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_set_render_rectangle ()
|
|
Packit |
971217 |
void
|
|
Packit |
971217 |
gst_video_overlay_rectangle_set_render_rectangle
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
gint render_x,
|
|
Packit |
971217 |
gint render_y,
|
|
Packit |
971217 |
guint render_width,
|
|
Packit |
971217 |
guint render_height);
|
|
Packit |
971217 |
Sets the render position and dimensions of the rectangle on the video.
|
|
Packit |
971217 |
This function is mainly for elements that modify the size of the video
|
|
Packit |
971217 |
in some way (e.g. through scaling or cropping) and need to adjust the
|
|
Packit |
971217 |
details of any overlays to match the operation that changed the size.
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
must be writable, meaning its refcount must be 1. You can
|
|
Packit |
971217 |
make the rectangles inside a GstVideoOverlayComposition writable using
|
|
Packit |
971217 |
gst_video_overlay_composition_make_writable() or
|
|
Packit |
971217 |
gst_video_overlay_composition_copy().
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_x
|
|
Packit |
971217 |
render X position of rectangle on video
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_y
|
|
Packit |
971217 |
render Y position of rectangle on video
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_width
|
|
Packit |
971217 |
render width of rectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
render_height
|
|
Packit |
971217 |
render height of rectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_copy ()
|
|
Packit |
971217 |
GstVideoOverlayRectangle *
|
|
Packit |
971217 |
gst_video_overlay_rectangle_copy (GstVideoOverlayRectangle *rectangle);
|
|
Packit |
971217 |
Makes a copy of rectangle
|
|
Packit |
971217 |
, so that it is possible to modify it
|
|
Packit |
971217 |
(e.g. to change the render co-ordinates or render dimension). The
|
|
Packit |
971217 |
actual overlay pixel data buffers contained in the rectangle are not
|
|
Packit |
971217 |
copied.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle to copy.
|
|
Packit |
971217 |
[transfer none]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
a new GstVideoOverlayRectangle equivalent
|
|
Packit |
971217 |
to rectangle
|
|
Packit |
971217 |
.
|
|
Packit |
971217 |
[transfer full]
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_flags ()
|
|
Packit |
971217 |
GstVideoOverlayFormatFlags
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_flags (GstVideoOverlayRectangle *rectangle);
|
|
Packit |
971217 |
Retrieves the flags associated with a GstVideoOverlayRectangle.
|
|
Packit |
971217 |
This is useful if the caller can handle both premultiplied alpha and
|
|
Packit |
971217 |
non premultiplied alpha, for example. By knowing whether the rectangle
|
|
Packit |
971217 |
uses premultiplied or not, it can request the pixel data in the format
|
|
Packit |
971217 |
it is stored in, to avoid unnecessary conversion.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
the GstVideoOverlayFormatFlags associated with the rectangle.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_global_alpha ()
|
|
Packit |
971217 |
gfloat
|
|
Packit |
971217 |
gst_video_overlay_rectangle_get_global_alpha
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle);
|
|
Packit |
971217 |
Retrieves the global-alpha value associated with a GstVideoOverlayRectangle.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Returns
|
|
Packit |
971217 |
the global-alpha value associated with the rectangle.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_video_overlay_rectangle_set_global_alpha ()
|
|
Packit |
971217 |
void
|
|
Packit |
971217 |
gst_video_overlay_rectangle_set_global_alpha
|
|
Packit |
971217 |
(GstVideoOverlayRectangle *rectangle,
|
|
Packit |
971217 |
gfloat global_alpha);
|
|
Packit |
971217 |
Sets the global alpha value associated with a GstVideoOverlayRectangle. Per-
|
|
Packit |
971217 |
pixel alpha values are multiplied with this value. Valid
|
|
Packit |
971217 |
values: 0 <= global_alpha <= 1; 1 to deactivate.
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
must be writable, meaning its refcount must be 1. You can
|
|
Packit |
971217 |
make the rectangles inside a GstVideoOverlayComposition writable using
|
|
Packit |
971217 |
gst_video_overlay_composition_make_writable() or
|
|
Packit |
971217 |
gst_video_overlay_composition_copy().
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Parameters
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
rectangle
|
|
Packit |
971217 |
a GstVideoOverlayRectangle
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
global_alpha
|
|
Packit |
971217 |
Global alpha value (0 to 1.0)
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Types and Values
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GstVideoOverlayComposition
|
|
Packit |
971217 |
typedef struct _GstVideoOverlayComposition GstVideoOverlayComposition;
|
|
Packit |
971217 |
An opaque video overlay composition object. A composition contains
|
|
Packit |
971217 |
multiple overlay rectangles.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS
|
|
Packit |
971217 |
#define GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS
|
|
Packit |
971217 |
Video formats supported by gst_video_overlay_composition_blend(), for
|
|
Packit |
971217 |
use in overlay elements' pad template caps.
|
|
Packit |
971217 |
Since: 1.2
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
struct GstVideoOverlayCompositionMeta
|
|
Packit |
971217 |
struct GstVideoOverlayCompositionMeta {
|
|
Packit |
971217 |
GstMeta meta;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GstVideoOverlayComposition *overlay;
|
|
Packit |
971217 |
};
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Extra buffer metadata describing image overlay data.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Members
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GstMeta meta;
|
|
Packit |
971217 |
parent GstMeta
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GstVideoOverlayComposition *overlay;
|
|
Packit |
971217 |
the attached GstVideoOverlayComposition
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
enum GstVideoOverlayFormatFlags
|
|
Packit |
971217 |
Overlay format flags.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
Members
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE
|
|
Packit |
971217 |
|
|
Packit |
971217 |
no flags
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA
|
|
Packit |
971217 |
|
|
Packit |
971217 |
RGB are premultiplied by A/255.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA
|
|
Packit |
971217 |
|
|
Packit |
971217 |
a global-alpha value != 1 is set.
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GstVideoOverlayRectangle
|
|
Packit |
971217 |
typedef struct _GstVideoOverlayRectangle GstVideoOverlayRectangle;
|
|
Packit |
971217 |
An opaque video overlay rectangle object. A rectangle contains a single
|
|
Packit |
971217 |
overlay rectangle which can be added to a composition.
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