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gstreamer/subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h

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fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
2015-03-15 14:16:23 +00:00
/* 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.
*/
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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#ifndef __GST_FD_ALLOCATOR_H__
#define __GST_FD_ALLOCATOR_H__
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
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#include <gst/gst.h>
allocators: GST_EXPORT -> GST_ALLOCATORS_API We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
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#include <gst/allocators/allocators-prelude.h>
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
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G_BEGIN_DECLS
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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typedef struct _GstFdAllocator GstFdAllocator;
typedef struct _GstFdAllocatorClass GstFdAllocatorClass;
allocators: make GstFdAllocator non-abstract Make the GstFdAllocator non-abstract because it is perfectly possible to make memory from a generic fd. Mark the memory as simply "fd".
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#define GST_ALLOCATOR_FD "fd"
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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#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))
fdmemory: add flags to control behaviour Add some flags to the GstFdMemory to control how memory is mapped and unmapped.
2015-03-15 16:27:33 +00:00
/**
docs: a random set of trivial fixes for the library docs All those where super straight forward from the warnings gtkdoc prints. It kind of makes sense to apply them before the list of warnings is >100 and people complain that gtkdoc is noisy.
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* GstFdMemoryFlags:
fdmemory: add flags to control behaviour Add some flags to the GstFdMemory to control how memory is mapped and unmapped.
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* @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.
fdmemory: add flag to avoid close of the fd Add GST_FD_MEMORY_FLAG_DONT_CLOSE to avoid closing the fd when the memory is freed. When you can guarantee the lifetime of the fd is longer than the memory, this can save a dup() call.
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* @GST_FD_MEMORY_FLAG_DONT_CLOSE: don't close the file descriptor when
doc: Remove extra . after Since marker
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* the memory is freed. Since: 1.10
fdmemory: add flags to control behaviour Add some flags to the GstFdMemory to control how memory is mapped and unmapped.
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*
* Various flags to control the operation of the fd backed memory.
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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*
* Since: 1.6
fdmemory: add flags to control behaviour Add some flags to the GstFdMemory to control how memory is mapped and unmapped.
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*/
typedef enum {
GST_FD_MEMORY_FLAG_NONE = 0,
GST_FD_MEMORY_FLAG_KEEP_MAPPED = (1 << 0),
GST_FD_MEMORY_FLAG_MAP_PRIVATE = (1 << 1),
fdmemory: add flag to avoid close of the fd Add GST_FD_MEMORY_FLAG_DONT_CLOSE to avoid closing the fd when the memory is freed. When you can guarantee the lifetime of the fd is longer than the memory, this can save a dup() call.
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GST_FD_MEMORY_FLAG_DONT_CLOSE = (1 << 2),
fdmemory: add flags to control behaviour Add some flags to the GstFdMemory to control how memory is mapped and unmapped.
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} GstFdMemoryFlags;
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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/**
* GstFdAllocator:
*
* Base class for allocators with fd-backed memory
*
* Since: 1.6
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
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*/
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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struct _GstFdAllocator
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
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{
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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GstAllocator parent;
};
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
2015-03-15 14:16:23 +00:00
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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struct _GstFdAllocatorClass
{
GstAllocatorClass parent_class;
};
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
2015-03-15 14:16:23 +00:00
allocators: GST_EXPORT -> GST_ALLOCATORS_API We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
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GST_ALLOCATORS_API
allocators: mark symbols explicitly for export with GST_EXPORT
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GType gst_fd_allocator_get_type (void);
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
2015-03-15 14:16:23 +00:00
allocators: GST_EXPORT -> GST_ALLOCATORS_API We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 10:19:16 +00:00
GST_ALLOCATORS_API
allocators: make GstFdAllocator non-abstract Make the GstFdAllocator non-abstract because it is perfectly possible to make memory from a generic fd. Mark the memory as simply "fd".
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GstAllocator * gst_fd_allocator_new (void);
allocators: mark symbols explicitly for export with GST_EXPORT
2017-05-15 23:30:34 +00:00
allocators: GST_EXPORT -> GST_ALLOCATORS_API We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 10:19:16 +00:00
GST_ALLOCATORS_API
allocators: make GstFdAllocator non-abstract Make the GstFdAllocator non-abstract because it is perfectly possible to make memory from a generic fd. Mark the memory as simply "fd".
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GstMemory * gst_fd_allocator_alloc (GstAllocator * allocator, gint fd,
gsize size, GstFdMemoryFlags flags);
allocators: GST_EXPORT -> GST_ALLOCATORS_API We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 10:19:16 +00:00
GST_ALLOCATORS_API
allocators: make GstFdAllocator non-abstract Make the GstFdAllocator non-abstract because it is perfectly possible to make memory from a generic fd. Mark the memory as simply "fd".
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gboolean gst_is_fd_memory (GstMemory *mem);
allocators: mark symbols explicitly for export with GST_EXPORT
2017-05-15 23:30:34 +00:00
allocators: GST_EXPORT -> GST_ALLOCATORS_API We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 10:19:16 +00:00
GST_ALLOCATORS_API
allocators: make GstFdAllocator non-abstract Make the GstFdAllocator non-abstract because it is perfectly possible to make memory from a generic fd. Mark the memory as simply "fd".
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gint gst_fd_memory_get_fd (GstMemory *mem);
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
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base: Add g_autoptr() support to all types https://bugzilla.gnome.org/show_bug.cgi?id=754464
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstFdAllocator, gst_object_unref)
fdmemory: add fd backed GstMemory to separate file Make a separate file for the code to handle the fd backed memory. This would make it possible later to add other allocators also using fd backed memory.
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G_END_DECLS
fdmemory: make a base class for allocating fd-backed memory Make a base class that can help with allocating fd-backed memory. Make dmabuf extend from the base class. We can now make methods to check if memory has an fd and get the fd for all the different types of fd-backed memory.
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#endif /* __GST_FD_ALLOCATOR_H__ */
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