gstreamer/gst/games/gstvideoimage.h

/* GStreamer
 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
 *		 <2004> Benjamin Otte <otte@gnome.org
 *
 * 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.
 */

#include <gst/gst.h>

#ifndef __GST_VIDEO_IMAGE_H__
#define __GST_VIDEO_IMAGE_H__

G_BEGIN_DECLS


typedef struct _GstVideoColor GstVideoColor;
typedef struct _GstVideoImage GstVideoImage;
typedef struct _GstVideoFormat GstVideoFormat;

struct _GstVideoColor {
  int		Y, U, V;
  int		R, G, B;
};
extern const GstVideoColor GST_VIDEO_COLOR_WHITE;
extern const GstVideoColor GST_VIDEO_COLOR_YELLOW;
extern const GstVideoColor GST_VIDEO_COLOR_CYAN;
extern const GstVideoColor GST_VIDEO_COLOR_GREEN;
extern const GstVideoColor GST_VIDEO_COLOR_MAGENTA;
extern const GstVideoColor GST_VIDEO_COLOR_RED;
extern const GstVideoColor GST_VIDEO_COLOR_BLUE;
extern const GstVideoColor GST_VIDEO_COLOR_BLACK;
extern const GstVideoColor GST_VIDEO_COLOR_NEG_I;
extern const GstVideoColor GST_VIDEO_COLOR_POS_Q;
extern const GstVideoColor GST_VIDEO_COLOR_SUPER_BLACK;
extern const GstVideoColor GST_VIDEO_COLOR_DARK_GREY;


struct _GstVideoImage
{
  guint8 *	dest;		/* pointer to first byte of video data */
  guint8 *	yp, *up, *vp;	/* pointers to first byte of each component
				 * for both packed/planar YUV and RGB */
  guint8 *	endptr;		/* pointer to byte beyond last video data */
  guint		ystride;
  guint		ustride;
  guint		vstride;
  guint		width;
  guint		height;
  const GstVideoFormat * format;
};

struct _GstVideoFormat
{
  char *	fourcc;
  char *	name;
  int		bitspp;
  void		(* paint_setup) (GstVideoImage * p, char *dest);
  void		(* paint_hline) (GstVideoImage * p, int x, int y, int w, const GstVideoColor *c);
  void		(* copy_hline) (GstVideoImage * dest, int destx, int desty,
      GstVideoImage * src, int srcx, int srcy, int w);
  int		ext_caps;
  int		depth;
  guint		red_mask;
  guint		green_mask;
  guint		blue_mask;
};

const GstVideoFormat *	gst_video_format_find_by_fourcc		(int find_fourcc);
const GstVideoFormat *	gst_video_format_find_by_name		(const char *name);
const GstVideoFormat *	gst_video_format_find_by_structure 	(const GstStructure *structure);
GstStructure *		gst_video_format_get_structure    	(const GstVideoFormat *format);
guint			gst_video_format_get_size		(const GstVideoFormat *format, 
								 guint w, guint h);

extern const GstVideoFormat gst_video_format_list[];
extern const guint gst_video_format_count;

void			gst_video_image_setup			(GstVideoImage *image, 
								 const GstVideoFormat *format,
								 guint8 *data, guint w, guint h);
									 
/* drawing operations */
void			gst_video_image_draw_hline		(GstVideoImage *image,
								 gint x, gint y, gint w,
								 const GstVideoColor *c);
void			gst_video_image_draw_rectangle		(GstVideoImage *image,
								 gint x, gint y, gint w, gint h,
								 const GstVideoColor *c, gboolean filled);
void			gst_video_image_copy_hline		(GstVideoImage *dest,
								 gint xdest, gint ydest,
								 GstVideoImage *src,
								 gint xsrc, gint ysrc, gint w);
void			gst_video_image_copy_area		(GstVideoImage *dest,
								 gint xdest, gint ydest,
								 GstVideoImage *src,
								 gint xsrc, gint ysrc, 
								 gint w, gint h);

G_END_DECLS

#endif /* __GST_VIDEO_IMAGE_H__ */