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93daa1435a
Since we started depending on GLib 2.44, we can be sure this macro is defined (it will be a no-op on compilers that don't support it). For plugins we should just start using `G_DECLARE_FINAL_TYPE` which means we no longer need the macro there, but for most types in base/gst-libs we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/* GStreamer fd memory
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* Copyright (C) 2013 Linaro SA
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* Author: Benjamin Gaignard <benjamin.gaignard@linaro.org> for Linaro.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_FD_ALLOCATOR_H__
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#define __GST_FD_ALLOCATOR_H__
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#include <gst/gst.h>
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#include <gst/allocators/allocators-prelude.h>
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G_BEGIN_DECLS
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typedef struct _GstFdAllocator GstFdAllocator;
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typedef struct _GstFdAllocatorClass GstFdAllocatorClass;
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#define GST_ALLOCATOR_FD "fd"
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#define GST_TYPE_FD_ALLOCATOR (gst_fd_allocator_get_type())
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#define GST_IS_FD_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_FD_ALLOCATOR))
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#define GST_IS_FD_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_FD_ALLOCATOR))
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#define GST_FD_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_FD_ALLOCATOR, GstFdAllocatorClass))
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#define GST_FD_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_FD_ALLOCATOR, GstFdAllocator))
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#define GST_FD_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_FD_ALLOCATOR, GstFdAllocatorClass))
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#define GST_FD_ALLOCATOR_CAST(obj) ((GstFdAllocator *)(obj))
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/**
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* GstFdMemoryFlags:
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* @GST_FD_MEMORY_FLAG_NONE: no flag
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* @GST_FD_MEMORY_FLAG_KEEP_MAPPED: once the memory is mapped,
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* keep it mapped until the memory is destroyed.
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* @GST_FD_MEMORY_FLAG_MAP_PRIVATE: do a private mapping instead of
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* the default shared mapping.
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* @GST_FD_MEMORY_FLAG_DONT_CLOSE: don't close the file descriptor when
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* the memory is freed. Since: 1.10
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*
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* Various flags to control the operation of the fd backed memory.
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*
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* Since: 1.6
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*/
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typedef enum {
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GST_FD_MEMORY_FLAG_NONE = 0,
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GST_FD_MEMORY_FLAG_KEEP_MAPPED = (1 << 0),
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GST_FD_MEMORY_FLAG_MAP_PRIVATE = (1 << 1),
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GST_FD_MEMORY_FLAG_DONT_CLOSE = (1 << 2),
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} GstFdMemoryFlags;
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/**
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* GstFdAllocator:
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*
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* Base class for allocators with fd-backed memory
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*
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* Since: 1.6
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*/
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struct _GstFdAllocator
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{
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GstAllocator parent;
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};
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struct _GstFdAllocatorClass
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{
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GstAllocatorClass parent_class;
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};
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GST_ALLOCATORS_API
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GType gst_fd_allocator_get_type (void);
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GST_ALLOCATORS_API
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GstAllocator * gst_fd_allocator_new (void);
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GST_ALLOCATORS_API
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GstMemory * gst_fd_allocator_alloc (GstAllocator * allocator, gint fd,
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gsize size, GstFdMemoryFlags flags);
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GST_ALLOCATORS_API
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gboolean gst_is_fd_memory (GstMemory *mem);
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GST_ALLOCATORS_API
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gint gst_fd_memory_get_fd (GstMemory *mem);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstFdAllocator, gst_object_unref)
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G_END_DECLS
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#endif /* __GST_FD_ALLOCATOR_H__ */
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