gstreamer/gst-libs/gst/video/video-overlay-composition.h

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video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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/* GStreamer Video Overlay Composition
* Copyright (C) 2011 Intel Corporation
* Copyright (C) 2011 Collabora Ltd.
* Copyright (C) 2011 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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*/
#ifndef __GST_VIDEO_OVERLAY_COMPOSITION_H__
#define __GST_VIDEO_OVERLAY_COMPOSITION_H__
#include <gst/gst.h>
#include <gst/video/video.h>
G_BEGIN_DECLS
/**
* GstVideoOverlayRectangle:
*
* An opaque video overlay rectangle object. A rectangle contains a single
* overlay rectangle which can be added to a composition.
*/
#define GST_TYPE_VIDEO_OVERLAY_RECTANGLE \
(gst_video_overlay_rectangle_get_type ())
#define GST_VIDEO_OVERLAY_RECTANGLE_CAST(obj) \
((GstVideoOverlayRectangle *)(obj))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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#define GST_VIDEO_OVERLAY_RECTANGLE(obj) \
(GST_VIDEO_OVERLAY_RECTANGLE_CAST(obj))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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#define GST_IS_VIDEO_OVERLAY_RECTANGLE(obj) \
(GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_VIDEO_OVERLAY_RECTANGLE))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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typedef struct _GstVideoOverlayRectangle GstVideoOverlayRectangle;
/**
* gst_video_overlay_rectangle_ref:
* @comp: a a #GstVideoOverlayRectangle.
*
* Increases the refcount of the given rectangle by one.
*
* Note that the refcount affects the writeability
* of @comp, use gst_video_overlay_rectangle_copy() to ensure a rectangle can
* be modified (there is no gst_video_overlay_rectangle_make_writable() because
* it is unlikely that someone will hold the single reference to the rectangle
* and not know that that's the case).
*
* Returns: (transfer full): @comp
*/
static inline GstVideoOverlayRectangle *
gst_video_overlay_rectangle_ref (GstVideoOverlayRectangle * comp)
{
return (GstVideoOverlayRectangle *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (comp));
}
/**
* gst_video_overlay_rectangle_unref:
* @comp: (transfer full): a #GstVideoOverlayRectangle.
*
* Decreases the refcount of the rectangle. If the refcount reaches 0, the
* rectangle will be freed.
*/
static inline void
gst_video_overlay_rectangle_unref (GstVideoOverlayRectangle * comp)
{
gst_mini_object_unref (GST_MINI_OBJECT_CAST (comp));
}
/**
* GstVideoOverlayFormatFlags:
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* @GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE: no flags
* @GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA: RGB are premultiplied by A/255.
* @GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA: a global-alpha value != 1 is set.
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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*
* Overlay format flags.
*/
typedef enum {
GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE = 0,
GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA = 1,
GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA = 2
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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} GstVideoOverlayFormatFlags;
#define GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION "meta:GstVideoOverlayComposition"
/**
* GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_RGB:
*
* Supported RGB overlay video format.
*/
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_RGB GST_VIDEO_FORMAT_BGRA
#else
#define GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_RGB GST_VIDEO_FORMAT_ARGB
#endif
/**
* GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_YUV:
*
* Supported YUV overlay video format.
*/
#define GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_YUV GST_VIDEO_FORMAT_AYUV
/**
* GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS:
*
* Video formats supported by gst_video_overlay_composition_blend(), for
* use in overlay elements' pad template caps.
*
* Since: 1.2
*/
#define GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS \
"{ BGRx, RGBx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR," \
" I420, YV12, AYUV, YUY2, UYVY, v308, Y41B, Y42B, Y444," \
" NV12, NV21, A420, YUV9, YVU9, IYU1, GRAY8 }"
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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GType gst_video_overlay_rectangle_get_type (void);
GST_EXPORT
GstVideoOverlayRectangle * gst_video_overlay_rectangle_new_raw (GstBuffer * pixels,
gint render_x, gint render_y,
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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guint render_width, guint render_height,
GstVideoOverlayFormatFlags flags);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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GstVideoOverlayRectangle * gst_video_overlay_rectangle_copy (GstVideoOverlayRectangle * rectangle);
GST_EXPORT
guint gst_video_overlay_rectangle_get_seqnum (GstVideoOverlayRectangle * rectangle);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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void gst_video_overlay_rectangle_set_render_rectangle (GstVideoOverlayRectangle * rectangle,
gint render_x,
gint render_y,
guint render_width,
guint render_height);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
gboolean gst_video_overlay_rectangle_get_render_rectangle (GstVideoOverlayRectangle * rectangle,
gint * render_x,
gint * render_y,
guint * render_width,
guint * render_height);
GST_EXPORT
GstBuffer * gst_video_overlay_rectangle_get_pixels_raw (GstVideoOverlayRectangle * rectangle,
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
GstVideoOverlayFormatFlags flags);
GST_EXPORT
GstBuffer * gst_video_overlay_rectangle_get_pixels_argb (GstVideoOverlayRectangle * rectangle,
GstVideoOverlayFormatFlags flags);
GST_EXPORT
GstBuffer * gst_video_overlay_rectangle_get_pixels_ayuv (GstVideoOverlayRectangle * rectangle,
GstVideoOverlayFormatFlags flags);
GST_EXPORT
GstBuffer * gst_video_overlay_rectangle_get_pixels_unscaled_raw (GstVideoOverlayRectangle * rectangle,
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
GstVideoOverlayFormatFlags flags);
GST_EXPORT
GstBuffer * gst_video_overlay_rectangle_get_pixels_unscaled_argb (GstVideoOverlayRectangle * rectangle,
GstVideoOverlayFormatFlags flags);
GST_EXPORT
GstBuffer * gst_video_overlay_rectangle_get_pixels_unscaled_ayuv (GstVideoOverlayRectangle * rectangle,
GstVideoOverlayFormatFlags flags);
GST_EXPORT
GstVideoOverlayFormatFlags gst_video_overlay_rectangle_get_flags (GstVideoOverlayRectangle * rectangle);
GST_EXPORT
gfloat gst_video_overlay_rectangle_get_global_alpha (GstVideoOverlayRectangle * rectangle);
GST_EXPORT
void gst_video_overlay_rectangle_set_global_alpha (GstVideoOverlayRectangle * rectangle,
gfloat global_alpha);
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
/**
* GstVideoOverlayComposition:
*
* An opaque video overlay composition object. A composition contains
* multiple overlay rectangles.
*/
#define GST_TYPE_VIDEO_OVERLAY_COMPOSITION \
(gst_video_overlay_composition_get_type ())
#define GST_VIDEO_OVERLAY_COMPOSITION_CAST(obj) \
((GstVideoOverlayComposition *)(obj))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
#define GST_VIDEO_OVERLAY_COMPOSITION(obj) \
(GST_VIDEO_OVERLAY_COMPOSITION_CAST(obj))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
#define GST_IS_VIDEO_OVERLAY_COMPOSITION(obj) \
(GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_VIDEO_OVERLAY_COMPOSITION))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
typedef struct _GstVideoOverlayComposition GstVideoOverlayComposition;
/**
* gst_video_overlay_composition_ref:
* @comp: a a #GstVideoOverlayComposition.
*
* Increases the refcount of the given composition by one.
*
* Note that the refcount affects the writeability
* of @comp, use gst_video_overlay_composition_make_writable() to ensure
* a composition and its rectangles can be modified.
*
* Returns: (transfer full): @comp
*/
static inline GstVideoOverlayComposition *
gst_video_overlay_composition_ref (GstVideoOverlayComposition * comp)
{
return (GstVideoOverlayComposition *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (comp));
}
/**
* gst_video_overlay_composition_unref:
* @comp: (transfer full): a #GstVideoOverlayComposition.
*
* Decreases the refcount of the composition. If the refcount reaches 0, the
* composition will be freed.
*/
static inline void
gst_video_overlay_composition_unref (GstVideoOverlayComposition * comp)
{
gst_mini_object_unref (GST_MINI_OBJECT_CAST (comp));
}
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
GType gst_video_overlay_composition_get_type (void);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
GstVideoOverlayComposition * gst_video_overlay_composition_copy (GstVideoOverlayComposition * comp);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
GstVideoOverlayComposition * gst_video_overlay_composition_make_writable (GstVideoOverlayComposition * comp);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
GstVideoOverlayComposition * gst_video_overlay_composition_new (GstVideoOverlayRectangle * rectangle);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
void gst_video_overlay_composition_add_rectangle (GstVideoOverlayComposition * comp,
GstVideoOverlayRectangle * rectangle);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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guint gst_video_overlay_composition_n_rectangles (GstVideoOverlayComposition * comp);
GST_EXPORT
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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GstVideoOverlayRectangle * gst_video_overlay_composition_get_rectangle (GstVideoOverlayComposition * comp, guint n);
GST_EXPORT
guint gst_video_overlay_composition_get_seqnum (GstVideoOverlayComposition * comp);
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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/* blend composition onto raw video buffer */
GST_EXPORT
gboolean gst_video_overlay_composition_blend (GstVideoOverlayComposition * comp,
GstVideoFrame * video_buf);
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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/* attach/retrieve composition from buffers */
#define GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE \
(gst_video_overlay_composition_meta_api_get_type())
#define GST_VIDEO_OVERLAY_COMPOSITION_META_INFO \
(gst_video_overlay_composition_meta_get_info())
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
typedef struct _GstVideoOverlayCompositionMeta GstVideoOverlayCompositionMeta;
/**
* GstVideoOverlayCompositionMeta:
* @meta: parent #GstMeta
* @overlay: the attached #GstVideoOverlayComposition
*
* Extra buffer metadata describing image overlay data.
*/
struct _GstVideoOverlayCompositionMeta
{
GstMeta meta;
GstVideoOverlayComposition *overlay;
};
GST_EXPORT
GType gst_video_overlay_composition_meta_api_get_type (void);
GST_EXPORT
const GstMetaInfo *gst_video_overlay_composition_meta_get_info (void);
GST_EXPORT
GstVideoOverlayCompositionMeta * gst_buffer_add_video_overlay_composition_meta (GstBuffer * buf,
GstVideoOverlayComposition * comp);
#define gst_buffer_get_video_overlay_composition_meta(b) \
((GstVideoOverlayCompositionMeta*)gst_buffer_get_meta((b),GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE))
#define gst_buffer_remove_video_overlay_composition_meta(b,m) \
gst_buffer_remove_meta((b),((GstMeta *) m))
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
2011-11-12 14:59:35 +00:00
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoOverlayComposition, gst_video_overlay_composition_unref)
#endif
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoOverlayRectangle, gst_video_overlay_rectangle_unref)
#endif
video: add video overlay composition API for subtitles Basic API to attach overlay rectangles to buffers, or blend them directly onto raw video buffers. To be used primarily for things like subtitles or logo overlays, not meant to replace videomixer. Allows us to associate subtitle overlays with non-raw video surface buffers, so that subtitles are not lost and can instead be rendered later when those surfaces are displayed or converted, whilst re-using all the existing overlay plugins and not having to teach them about our special video surfaces. Could also have been made part of the surface buffer abstraction of course, but a secondary goal was to consolidate the blending code for raw video into libgstvideo, and this kind of API allows us to do both in a way that's minimally invasive to existing elements, and at the same time is fairly intuitive. More features and extensions like the ability to pass the source data or text/markup directly will be added later. https://bugzilla.gnome.org/show_bug.cgi?id=665080 API: gst_video_buffer_get_overlay_composition() API: gst_video_buffer_set_overlay_composition() API: gst_video_overlay_composition_new() API: gst_video_overlay_composition_add_rectangle() API: gst_video_overlay_composition_n_rectangles() API: gst_video_overlay_composition_get_rectangle() API: gst_video_overlay_composition_make_writable() API: gst_video_overlay_composition_copy() API: gst_video_overlay_composition_ref() API: gst_video_overlay_composition_unref() API: gst_video_overlay_composition_blend() API: gst_video_overlay_rectangle_new_argb() API: gst_video_overlay_rectangle_get_pixels_argb() API: gst_video_overlay_rectangle_get_pixels_unscaled_argb() API: gst_video_overlay_rectangle_get_render_rectangle() API: gst_video_overlay_rectangle_set_render_rectangle() API: gst_video_overlay_rectangle_copy() API: gst_video_overlay_rectangle_ref() API: gst_video_overlay_rectangle_unref()
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G_END_DECLS
#endif /* __GST_VIDEO_OVERLAY_COMPOSITION_H__ */