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/* GStreamer
* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_META_VIDEO_H__
#define __GST_META_VIDEO_H__
#include <gst/gst.h>
#include <gst/video/video.h>
G_BEGIN_DECLS
#define GST_META_API_VIDEO "GstMetaVideo"
#define GST_META_INFO_VIDEO (gst_meta_video_get_info())
typedef struct _GstMetaVideo GstMetaVideo;
#define GST_META_API_VIDEO_CROP "GstMetaVideoCrop"
#define GST_META_INFO_VIDEO_CROP (gst_meta_video_crop_get_info())
typedef struct _GstMetaVideoCrop GstMetaVideoCrop;
/**
* GstMetaVideo:
* @meta: parent #GstMeta
* @flags: additional video flags
* @n_planes: the number of planes in the image
* @offset: array of offsets for the planes
* @stride: array of strides for the planes
* @map: map the memory of a plane
* @unmap: unmap the memory of a plane
*
* Extra buffer metadata describing image properties
*/
struct _GstMetaVideo {
GstMeta meta;
GstBuffer *buffer;
GstVideoFlags flags;
GstVideoFormat format;
guint width;
guint height;
guint n_planes;
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride[GST_VIDEO_MAX_PLANES];
gpointer (*map) (GstMetaVideo *meta, guint plane, gint *stride,
GstMapFlags flags);
gboolean (*unmap) (GstMetaVideo *meta, guint plane, gpointer data);
};
const GstMetaInfo * gst_meta_video_get_info (void);
#define gst_buffer_get_meta_video(b) ((GstMetaVideo*)gst_buffer_get_meta((b),GST_META_INFO_VIDEO))
GstMetaVideo * gst_buffer_add_meta_video (GstBuffer *buffer, GstVideoFlags flags,
GstVideoFormat format, guint width, guint height);
GstMetaVideo * gst_buffer_add_meta_video_full (GstBuffer *buffer, GstVideoFlags flags,
GstVideoFormat format, guint width, guint height,
guint n_planes, gsize offset[GST_VIDEO_MAX_PLANES],
gint stride[GST_VIDEO_MAX_PLANES]);
gpointer gst_meta_video_map (GstMetaVideo *meta, guint plane, gint *stride,
GstMapFlags flags);
gboolean gst_meta_video_unmap (GstMetaVideo *meta, guint plane, gpointer data);
/**
* GstMetaVideoCrop:
* @meta: parent #GstMeta
* @x: the horizontal offset
* @y: the vertical offset
* @width: the cropped width
* @height: the cropped height
*
* Extra buffer metadata describing image cropping.
*/
struct _GstMetaVideoCrop {
GstMeta meta;
guint x;
guint y;
guint width;
guint height;
};
const GstMetaInfo * gst_meta_video_crop_get_info (void);
#define gst_buffer_get_meta_video_crop(b) ((GstMetaVideoCrop*)gst_buffer_get_meta((b),GST_META_INFO_VIDEO_CROP))
#define gst_buffer_add_meta_video_crop(b) ((GstMetaVideoCrop*)gst_buffer_add_meta((b),GST_META_INFO_VIDEO_CROP, NULL))
G_END_DECLS
#endif /* __GST_META_VIDEO_H__ */
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