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/*
* gstvaapiutils_glx.h - GLX utilties
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef GST_VAAPI_UTILS_GLX_H
#define GST_VAAPI_UTILS_GLX_H
#include "config.h"
#include <GL/gl.h>
#include <GL/glext.h>
#include <GL/glx.h>
#include <GL/glxext.h>
#include <glib.h>
#if GLX_GLXEXT_VERSION < 18
typedef void (*PFNGLXBINDTEXIMAGEEXTPROC)(Display *, GLXDrawable, int, const int *);
typedef void (*PFNGLXRELEASETEXIMAGEEXTPROC)(Display *, GLXDrawable, int);
#endif
#if GLX_GLXEXT_VERSION < 27
/* XXX: this is not exactly that version but this is the only means to
make sure we have the correct <GL/glx.h> with those signatures */
typedef GLXPixmap (*PFNGLXCREATEPIXMAPPROC)(Display *, GLXFBConfig, Pixmap, const int *);
typedef void (*PFNGLXDESTROYPIXMAPPROC)(Display *, GLXPixmap);
#endif
#ifndef GL_FRAMEBUFFER_BINDING
#define GL_FRAMEBUFFER_BINDING GL_FRAMEBUFFER_BINDING_EXT
#endif
G_GNUC_INTERNAL
const char *
gl_get_error_string(GLenum error);
G_GNUC_INTERNAL
void
gl_purge_errors(void);
G_GNUC_INTERNAL
gboolean
gl_check_error(void);
G_GNUC_INTERNAL
gboolean
gl_get_param(GLenum param, guint *pval);
G_GNUC_INTERNAL
gboolean
gl_get_texture_param(GLenum target, GLenum param, guint *pval);
G_GNUC_INTERNAL
void
gl_set_bgcolor(guint32 color);
G_GNUC_INTERNAL
void
gl_resize(guint width, guint height);
typedef struct _GLContextState GLContextState;
struct _GLContextState {
Display *display;
Window window;
XVisualInfo *visual;
GLXContext context;
guint swapped_buffers : 1;
};
G_GNUC_INTERNAL
GLContextState *
gl_create_context(Display *dpy, int screen, GLContextState *parent);
G_GNUC_INTERNAL
void
gl_destroy_context(GLContextState *cs);
G_GNUC_INTERNAL
void
gl_get_current_context(GLContextState *cs);
G_GNUC_INTERNAL
gboolean
gl_set_current_context(GLContextState *new_cs, GLContextState *old_cs);
G_GNUC_INTERNAL
void
gl_swap_buffers(GLContextState *cs);
typedef struct _GLTextureState GLTextureState;
struct _GLTextureState {
GLenum target;
GLuint old_texture;
guint was_enabled : 1;
guint was_bound : 1;
};
G_GNUC_INTERNAL
gboolean
gl_bind_texture(GLTextureState *ts, GLenum target, GLuint texture);
G_GNUC_INTERNAL
void
gl_unbind_texture(GLTextureState *ts);
G_GNUC_INTERNAL
GLuint
gl_create_texture(GLenum target, GLenum format, guint width, guint height);
typedef struct _GLVTable GLVTable;
struct _GLVTable {
PFNGLXCREATEPIXMAPPROC glx_create_pixmap;
PFNGLXDESTROYPIXMAPPROC glx_destroy_pixmap;
PFNGLXBINDTEXIMAGEEXTPROC glx_bind_tex_image;
PFNGLXRELEASETEXIMAGEEXTPROC glx_release_tex_image;
PFNGLGENFRAMEBUFFERSEXTPROC gl_gen_framebuffers;
PFNGLDELETEFRAMEBUFFERSEXTPROC gl_delete_framebuffers;
PFNGLBINDFRAMEBUFFEREXTPROC gl_bind_framebuffer;
PFNGLGENRENDERBUFFERSEXTPROC gl_gen_renderbuffers;
PFNGLDELETERENDERBUFFERSEXTPROC gl_delete_renderbuffers;
PFNGLBINDRENDERBUFFEREXTPROC gl_bind_renderbuffer;
PFNGLRENDERBUFFERSTORAGEEXTPROC gl_renderbuffer_storage;
PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC gl_framebuffer_renderbuffer;
PFNGLFRAMEBUFFERTEXTURE2DEXTPROC gl_framebuffer_texture_2d;
PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC gl_check_framebuffer_status;
guint has_texture_from_pixmap : 1;
guint has_framebuffer_object : 1;
};
G_GNUC_INTERNAL
GLVTable *
gl_get_vtable(void);
typedef struct _GLPixmapObject GLPixmapObject;
struct _GLPixmapObject {
Display *dpy;
GLenum target;
GLuint texture;
GLTextureState old_texture;
guint width;
guint height;
Pixmap pixmap;
GLXPixmap glx_pixmap;
guint is_bound : 1;
};
G_GNUC_INTERNAL
GLPixmapObject *
gl_create_pixmap_object(Display *dpy, guint width, guint height);
G_GNUC_INTERNAL
void
gl_destroy_pixmap_object(GLPixmapObject *pixo);
G_GNUC_INTERNAL
gboolean
gl_bind_pixmap_object(GLPixmapObject *pixo);
G_GNUC_INTERNAL
gboolean
gl_unbind_pixmap_object(GLPixmapObject *pixo);
typedef struct _GLFramebufferObject GLFramebufferObject;
struct _GLFramebufferObject {
guint width;
guint height;
GLuint fbo;
GLuint old_fbo;
guint is_bound : 1;
};
G_GNUC_INTERNAL
GLFramebufferObject *
gl_create_framebuffer_object(
GLenum target,
GLuint texture,
guint width,
guint height
);
G_GNUC_INTERNAL
void
gl_destroy_framebuffer_object(GLFramebufferObject *fbo);
G_GNUC_INTERNAL
gboolean
gl_bind_framebuffer_object(GLFramebufferObject *fbo);
G_GNUC_INTERNAL
gboolean
gl_unbind_framebuffer_object(GLFramebufferObject *fbo);
#endif /* GST_VAAPI_UTILS_GLX_H */
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