gstreamer/gst-libs/gst/allocators/gstphysmemory.h

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/* GStreamer
* Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.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_PHYS_MEMORY_H__
#define __GST_PHYS_MEMORY_H__
#include <gst/gst.h>
#include <gst/allocators/allocators-prelude.h>
G_BEGIN_DECLS
typedef struct _GstPhysMemoryAllocator GstPhysMemoryAllocator;
typedef struct _GstPhysMemoryAllocatorInterface GstPhysMemoryAllocatorInterface;
#define GST_TYPE_PHYS_MEMORY_ALLOCATOR (gst_phys_memory_allocator_get_type())
#define GST_IS_PHYS_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PHYS_MEMORY_ALLOCATOR))
#define GST_IS_PHYS_MEMORY_ALLOCATOR_INTERFACE(iface) (G_TYPE_CHECK_INTERFACE_TYPE ((iface), GST_TYPE_PHYS_MEMORY_ALLOCATOR))
#define GST_PHYS_MEMORY_ALLOCATOR_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_PHYS_MEMORY_ALLOCATOR, GstPhysMemoryAllocatorInterface))
#define GST_PHYS_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PHYS_MEMORY_ALLOCATOR, GstPhysMemoryAllocator))
#define GST_PHYS_MEMORY_ALLOCATOR_INTERFACE(iface) (G_TYPE_CHECK_INTERFACE_CAST ((iface), GST_TYPE_PHYS_MEMORY_ALLOCATOR, GstPhysMemoryAllocatorInterface))
#define GST_PHYS_MEMORY_ALLOCATOR_CAST(obj) ((GstPhysMemoryAllocator *)(obj))
/**
* GstPhysMemoryAllocatorInterface:
* @get_phys_addr: Implementations shall return the physicall memory address
* that is backing the provided memory, or 0 if none.
*
* Marker interface for allocators with physical address backed memory
*
* Since: 1.14
*/
struct _GstPhysMemoryAllocatorInterface
{
/*< private >*/
GTypeInterface parent_iface;
/*< public >*/
guintptr (*get_phys_addr) (GstPhysMemoryAllocator * allocator, GstMemory * mem);
};
GST_ALLOCATORS_API
GType gst_phys_memory_allocator_get_type (void);
GST_ALLOCATORS_API
gboolean gst_is_phys_memory (GstMemory *mem);
GST_ALLOCATORS_API
guintptr gst_phys_memory_get_phys_addr (GstMemory * mem);
G_END_DECLS
#endif /* __GST_PHYS_MEMORY_H__ */