gstreamer/gst-libs/gst/gl/gstglmemory.h
2014-03-15 18:36:48 +01:00

134 lines
4.3 KiB
C

/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystreet00@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_MEMORY_H_
#define _GST_GL_MEMORY_H_
#include <gst/gst.h>
#include <gst/gstmemory.h>
#include <gst/gstallocator.h>
#include "gstgldisplay.h"
#include "gstgldownload.h"
#include "gstglupload.h"
G_BEGIN_DECLS
typedef struct _GstGLUpload GstGLUpload;
typedef struct _GstGLDownload GstGLDownload;
#define GST_TYPE_GL_ALLOCATOR (gst_gl_allocator_get_type())
GType gst_gl_allocator_get_type(void);
#define GST_IS_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
#define GST_IS_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_ALLOCATOR))
#define GST_GL_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
#define GST_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocator))
#define GST_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
#define GST_GL_ALLOCATOR_CAST(obj) ((GstGLAllocator *)(obj))
typedef struct _GstGLMemory GstGLMemory;
typedef struct _GstGLAllocator GstGLAllocator;
typedef struct _GstGLAllocatorClass GstGLAllocatorClass;
typedef enum
{
GST_GL_MEMORY_FLAG_DOWNLOAD_INITTED = (GST_MEMORY_FLAG_LAST << 0),
GST_GL_MEMORY_FLAG_UPLOAD_INITTED = (GST_MEMORY_FLAG_LAST << 1),
GST_GL_MEMORY_FLAG_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 2),
GST_GL_MEMORY_FLAG_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 3)
} GstGLMemoryFlags;
/**
* GST_MAP_GL:
*
* Flag indicating that we should map the GL object instead of to system memory.
*
* Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
* you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
* #GST_MAP_READ has the same semantics as though you are reading from OpenGL.
*/
#define GST_MAP_GL GST_MAP_FLAG_LAST << 1
/**
* GstGLMemory:
* @mem: the parent object
* @display: the #GstGLDisplay to use
* @tex_id: the texture id
* @gl_format: the format of the texture
* @width: width of the texture
* @height: height of the texture
*
* Represents information about a GL texture
*/
struct _GstGLMemory
{
GstMemory mem;
GstGLDisplay *display;
GLuint tex_id;
GstVideoFormat v_format;
GLenum gl_format;
GLuint width;
GLuint height;
GstGLDownload *download;
GLenum render_target;
GstGLUpload *upload;
GstMapFlags map_flags;
gpointer data;
gboolean wrapped;
GDestroyNotify notify;
gpointer user_data;
};
#define GST_GL_MEMORY_ALLOCATOR "GLMemory"
#define GST_GL_MEMORY_FLAGS(mem) GST_MEMORY_FLAGS(mem)
#define GST_GL_MEMORY_FLAG_IS_SET(mem,flag) GST_MEMORY_FLAG_IS_SET(mem,flag)
#define GST_GL_MEMORY_FLAG_SET(mem,flag) GST_MINI_OBJECT_FLAG_SET(mem,flag)
#define GST_GL_MEMORY_FLAG_UNSET(mem,flag) GST_MEMORY_FLAG_UNSET(mem,flag)
void gst_gl_memory_init (void);
GstMemory * gst_gl_memory_alloc (GstGLDisplay * display, GstVideoFormat format,
gsize width, gsize height);
GstGLMemory * gst_gl_memory_wrapped (GstGLDisplay * display, GstVideoFormat format,
guint width, guint height, gpointer data,
gpointer user_data, GDestroyNotify notify);
gboolean gst_is_gl_memory (GstMemory * mem);
struct _GstGLAllocator
{
GstAllocator parent;
};
struct _GstGLAllocatorClass
{
GstAllocatorClass parent_class;
};
G_END_DECLS
#endif /* _GST_GL_MEMORY_H_ */