mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-06 09:29:42 +00:00
310 lines
12 KiB
C
310 lines
12 KiB
C
/* 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.
|
|
*/
|
|
|
|
#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))
|
|
#define GST_VIDEO_OVERLAY_RECTANGLE(obj) \
|
|
(GST_VIDEO_OVERLAY_RECTANGLE_CAST(obj))
|
|
#define GST_IS_VIDEO_OVERLAY_RECTANGLE(obj) \
|
|
(GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_VIDEO_OVERLAY_RECTANGLE))
|
|
|
|
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:
|
|
* @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.
|
|
*
|
|
* Overlay format flags.
|
|
*/
|
|
typedef enum {
|
|
GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE = 0,
|
|
GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA = (1<<0),
|
|
GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA = (1<<1)
|
|
} 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 GST_VIDEO_FORMATS_ALL
|
|
|
|
GST_VIDEO_API
|
|
GType gst_video_overlay_rectangle_get_type (void);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayRectangle * gst_video_overlay_rectangle_new_raw (GstBuffer * pixels,
|
|
gint render_x, gint render_y,
|
|
guint render_width, guint render_height,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayRectangle * gst_video_overlay_rectangle_copy (GstVideoOverlayRectangle * rectangle);
|
|
|
|
GST_VIDEO_API
|
|
guint gst_video_overlay_rectangle_get_seqnum (GstVideoOverlayRectangle * rectangle);
|
|
|
|
GST_VIDEO_API
|
|
void gst_video_overlay_rectangle_set_render_rectangle (GstVideoOverlayRectangle * rectangle,
|
|
gint render_x,
|
|
gint render_y,
|
|
guint render_width,
|
|
guint render_height);
|
|
|
|
GST_VIDEO_API
|
|
gboolean gst_video_overlay_rectangle_get_render_rectangle (GstVideoOverlayRectangle * rectangle,
|
|
gint * render_x,
|
|
gint * render_y,
|
|
guint * render_width,
|
|
guint * render_height);
|
|
|
|
GST_VIDEO_API
|
|
GstBuffer * gst_video_overlay_rectangle_get_pixels_raw (GstVideoOverlayRectangle * rectangle,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstBuffer * gst_video_overlay_rectangle_get_pixels_argb (GstVideoOverlayRectangle * rectangle,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstBuffer * gst_video_overlay_rectangle_get_pixels_ayuv (GstVideoOverlayRectangle * rectangle,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstBuffer * gst_video_overlay_rectangle_get_pixels_unscaled_raw (GstVideoOverlayRectangle * rectangle,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstBuffer * gst_video_overlay_rectangle_get_pixels_unscaled_argb (GstVideoOverlayRectangle * rectangle,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstBuffer * gst_video_overlay_rectangle_get_pixels_unscaled_ayuv (GstVideoOverlayRectangle * rectangle,
|
|
GstVideoOverlayFormatFlags flags);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayFormatFlags gst_video_overlay_rectangle_get_flags (GstVideoOverlayRectangle * rectangle);
|
|
|
|
GST_VIDEO_API
|
|
gfloat gst_video_overlay_rectangle_get_global_alpha (GstVideoOverlayRectangle * rectangle);
|
|
|
|
GST_VIDEO_API
|
|
void gst_video_overlay_rectangle_set_global_alpha (GstVideoOverlayRectangle * rectangle,
|
|
gfloat global_alpha);
|
|
|
|
/**
|
|
* 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))
|
|
#define GST_VIDEO_OVERLAY_COMPOSITION(obj) \
|
|
(GST_VIDEO_OVERLAY_COMPOSITION_CAST(obj))
|
|
#define GST_IS_VIDEO_OVERLAY_COMPOSITION(obj) \
|
|
(GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_VIDEO_OVERLAY_COMPOSITION))
|
|
|
|
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_VIDEO_API
|
|
GType gst_video_overlay_composition_get_type (void);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayComposition * gst_video_overlay_composition_copy (GstVideoOverlayComposition * comp);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayComposition * gst_video_overlay_composition_make_writable (GstVideoOverlayComposition * comp);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayComposition * gst_video_overlay_composition_new (GstVideoOverlayRectangle * rectangle);
|
|
|
|
GST_VIDEO_API
|
|
void gst_video_overlay_composition_add_rectangle (GstVideoOverlayComposition * comp,
|
|
GstVideoOverlayRectangle * rectangle);
|
|
|
|
GST_VIDEO_API
|
|
guint gst_video_overlay_composition_n_rectangles (GstVideoOverlayComposition * comp);
|
|
|
|
GST_VIDEO_API
|
|
GstVideoOverlayRectangle * gst_video_overlay_composition_get_rectangle (GstVideoOverlayComposition * comp, guint n);
|
|
|
|
GST_VIDEO_API
|
|
guint gst_video_overlay_composition_get_seqnum (GstVideoOverlayComposition * comp);
|
|
|
|
/* blend composition onto raw video buffer */
|
|
|
|
GST_VIDEO_API
|
|
gboolean gst_video_overlay_composition_blend (GstVideoOverlayComposition * comp,
|
|
GstVideoFrame * video_buf);
|
|
|
|
/* 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())
|
|
|
|
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_VIDEO_API
|
|
GType gst_video_overlay_composition_meta_api_get_type (void);
|
|
|
|
GST_VIDEO_API
|
|
const GstMetaInfo *gst_video_overlay_composition_meta_get_info (void);
|
|
|
|
GST_VIDEO_API
|
|
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))
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoOverlayComposition, gst_video_overlay_composition_unref)
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoOverlayRectangle, gst_video_overlay_rectangle_unref)
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_VIDEO_OVERLAY_COMPOSITION_H__ */
|