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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.
*/
#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,
GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA = 2
} 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_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))
#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
G_END_DECLS
#endif /* __GST_VIDEO_OVERLAY_COMPOSITION_H__ */
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