gstreamer/gst-libs/gst/gl/gstglbuffer.h

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/*
* GStreame
* Copyright (C) 2007 David Schleef <ds@schleef.org>
* Copyright (C) 2008 Julien Isorce <julien.isorce@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_GL_BUFFER_H_
#define _GST_GL_BUFFER_H_
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gstgldisplay.h"
G_BEGIN_DECLS
typedef struct _GstGLBuffer GstGLBuffer;
#define GST_TYPE_GL_BUFFER (gst_gl_buffer_get_type())
#define GST_IS_GL_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_BUFFER))
#define GST_GL_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BUFFER, GstGLBuffer))
//A gl buffer has only one texture.
//Note that when a gl buffer is created by the upload filter,
//the colorspace conversion is made using a FBO.
//And so the texture attached to this FBO is the one managed by the gl buffer.
struct _GstGLBuffer {
GstBuffer buffer;
GstGLDisplay *display;
gint width;
gint height;
GLuint texture;
};
GType gst_gl_buffer_get_type (void);
#define gst_gl_buffer_ref(x) ((GstGLBuffer *)(gst_buffer_ref((GstBuffer *)(x))))
#define gst_gl_buffer_unref(x) (gst_buffer_unref((GstBuffer *)(x)))
GstGLBuffer* gst_gl_buffer_new (GstGLDisplay* display, gint gl_width, gint gl_height);
gint gst_gl_buffer_get_size (gint width, gint height);
gboolean gst_gl_buffer_parse_caps (GstCaps* caps, gint* width, gint* height);
#define GST_GL_VIDEO_CAPS \
"video/x-raw-gl," \
"width=(int)[1,8000]," \
"height=(int)[1,6000]," \
"pixel-aspect-ratio=(fraction)1/1," \
"framerate=(fraction)[0/1,100/1]"
G_END_DECLS
#endif /* _GST_GL_BUFFER_H_ */