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/* GStreamer fd memory
* Copyright (C) 2013 Linaro SA
* Author: Benjamin Gaignard <benjamin.gaignard@linaro.org> for Linaro.
*
* 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_FD_ALLOCATOR_H__
#define __GST_FD_ALLOCATOR_H__
#include <gst/gst.h>
#include <gst/allocators/allocators-prelude.h>
G_BEGIN_DECLS
typedef struct _GstFdAllocator GstFdAllocator;
typedef struct _GstFdAllocatorClass GstFdAllocatorClass;
#define GST_ALLOCATOR_FD "fd"
#define GST_TYPE_FD_ALLOCATOR (gst_fd_allocator_get_type())
#define GST_IS_FD_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_FD_ALLOCATOR))
#define GST_IS_FD_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_FD_ALLOCATOR))
#define GST_FD_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_FD_ALLOCATOR, GstFdAllocatorClass))
#define GST_FD_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_FD_ALLOCATOR, GstFdAllocator))
#define GST_FD_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_FD_ALLOCATOR, GstFdAllocatorClass))
#define GST_FD_ALLOCATOR_CAST(obj) ((GstFdAllocator *)(obj))
/**
* GstFdMemoryFlags:
* @GST_FD_MEMORY_FLAG_NONE: no flag
* @GST_FD_MEMORY_FLAG_KEEP_MAPPED: once the memory is mapped,
* keep it mapped until the memory is destroyed.
* @GST_FD_MEMORY_FLAG_MAP_PRIVATE: do a private mapping instead of
* the default shared mapping.
* @GST_FD_MEMORY_FLAG_DONT_CLOSE: don't close the file descriptor when
* the memory is freed. Since: 1.10
*
* Various flags to control the operation of the fd backed memory.
*
* Since: 1.6
*/
typedef enum {
GST_FD_MEMORY_FLAG_NONE = 0,
GST_FD_MEMORY_FLAG_KEEP_MAPPED = (1 << 0),
GST_FD_MEMORY_FLAG_MAP_PRIVATE = (1 << 1),
GST_FD_MEMORY_FLAG_DONT_CLOSE = (1 << 2),
} GstFdMemoryFlags;
/**
* GstFdAllocator:
*
* Base class for allocators with fd-backed memory
*
* Since: 1.6
*/
struct _GstFdAllocator
{
GstAllocator parent;
};
struct _GstFdAllocatorClass
{
GstAllocatorClass parent_class;
};
GST_ALLOCATORS_API
GType gst_fd_allocator_get_type (void);
GST_ALLOCATORS_API
GstAllocator * gst_fd_allocator_new (void);
GST_ALLOCATORS_API
GstMemory * gst_fd_allocator_alloc (GstAllocator * allocator, gint fd,
gsize size, GstFdMemoryFlags flags);
GST_ALLOCATORS_API
gboolean gst_is_fd_memory (GstMemory *mem);
GST_ALLOCATORS_API
gint gst_fd_memory_get_fd (GstMemory *mem);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstFdAllocator, gst_object_unref)
G_END_DECLS
#endif /* __GST_FD_ALLOCATOR_H__ */
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