gstreamer/gst/gl/glimagesink.h

/* GStreamer
 * Copyright (C) <2003> Julien Moutte <julien@moutte.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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
 
#ifndef __GST_GLIMAGESINK_H__
#define __GST_GLIMAGESINK_H__

#include <gst/video/videosink.h>

#include <X11/Xlib.h>
#include <GL/glx.h>
#include <GL/gl.h>
#include <GL/glu.h>

#include <string.h>
#include <math.h>

G_BEGIN_DECLS

#define GST_TYPE_GLIMAGESINK \
  (gst_glimagesink_get_type())
#define GST_GLIMAGESINK(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GLIMAGESINK, GstGLImageSink))
#define GST_GLIMAGESINK_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_GLIMAGESINK, GstGLImageSink))
#define GST_IS_GLIMAGESINK(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GLIMAGESINK))
#define GST_IS_GLIMAGESINK_CLASS(obj) \
  (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_GLIMAGESINK))

typedef struct _GstXContext GstXContext;
typedef struct _GstGLWindow GstGLWindow;
typedef struct _GstGLImage GstGLImage;

typedef struct _GstGLImageSink GstGLImageSink;
typedef struct _GstGLImageSinkClass GstGLImageSinkClass;

/* Global X Context stuff */
struct _GstXContext {
  Display *disp;
  
  Screen *screen;
  gint screen_num;
  
  Visual *visual;
  XVisualInfo *visualinfo;
  
  Window root;
  GLXContext glx;
  
  gulong white, black;
  
  gint depth;
  gint bpp;
  gint endianness;
  
  gboolean use_xshm;
  
  GstCaps *caps;
};

/* XWindow stuff */
struct _GstGLWindow {
  XSetWindowAttributes attr;
  Window win;
  gint width, height;
  gboolean internal;
};

/* XImage stuff */
struct _GstGLImage {
  /* Reference to the ximagesink we belong to */
  GstGLImageSink *glimagesink;
  
  GLuint texid; 
  
  char *data;
  gint width, height, size;
};

struct _GstGLImageSink {
  /* Our element stuff */
  GstVideoSink videosink;

  char *display_name;
  
  GstXContext *xcontext;
  GstGLWindow *window;
  GstGLImage *glimage;
  GstGLImage *cur_image;
  
  gdouble framerate;
  GMutex *x_lock;
  
  gint pixel_width, pixel_height;  /* Unused */
 
  GstClockTime time;
  
  GMutex *pool_lock;
  GSList *image_pool;

  guint pointer_x, pointer_y;
  gboolean pointer_moved;
  gboolean pointer_button[5];

  gboolean synchronous;
  gboolean signal_handoffs;  
};

struct _GstGLImageSinkClass {
  GstVideoSinkClass parent_class;

  /* signals */
  void (*handoff) (GstElement *element, GstBuffer *buf, GstPad *pad);
  void (*bufferalloc) (GstElement *element, GstBuffer *buf, GstPad *pad);
};

GType gst_glimagesink_get_type(void);

G_END_DECLS

#endif /* __GST_GLIMAGESINK_H__ */