forked from Freescale/gstreamer-imx
-
Notifications
You must be signed in to change notification settings - Fork 0
/
phys_mem_allocator.h
89 lines (61 loc) · 2.88 KB
/
phys_mem_allocator.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
/* Common allocator for allocating physical memory
* Copyright (C) 2013 Carlos Rafael Giani
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef GST_IMX_COMMON_PHYS_MEM_ALLOCATOR_H
#define GST_IMX_COMMON_PHYS_MEM_ALLOCATOR_H
#include <gst/gst.h>
#include <gst/gstallocator.h>
#include "phys_mem_addr.h"
G_BEGIN_DECLS
typedef struct _GstImxPhysMemAllocator GstImxPhysMemAllocator;
typedef struct _GstImxPhysMemAllocatorClass GstImxPhysMemAllocatorClass;
typedef struct _GstImxPhysMemory GstImxPhysMemory;
#define GST_TYPE_IMX_PHYS_MEM_ALLOCATOR (gst_imx_phys_mem_allocator_get_type())
#define GST_IMX_PHYS_MEM_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_IMX_PHYS_MEM_ALLOCATOR, GstImxPhysMemAllocator))
#define GST_IMX_PHYS_MEM_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_IMX_PHYS_MEM_ALLOCATOR, GstImxPhysMemAllocatorClass))
#define GST_IS_IMX_PHYS_MEM_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_IMX_PHYS_MEM_ALLOCATOR))
#define GST_IS_IMX_PHYS_MEM_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_IMX_PHYS_MEM_ALLOCATOR))
struct _GstImxPhysMemAllocator
{
GstAllocator parent;
};
struct _GstImxPhysMemAllocatorClass
{
GstAllocatorClass parent_class;
gboolean (*alloc_phys_mem)(GstImxPhysMemAllocator *allocator, GstImxPhysMemory *memory, gssize size);
gboolean (*free_phys_mem)(GstImxPhysMemAllocator *allocator, GstImxPhysMemory *memory);
gpointer (*map_phys_mem)(GstImxPhysMemAllocator *allocator, GstImxPhysMemory *memory, gssize size, GstMapFlags flags);
void (*unmap_phys_mem)(GstImxPhysMemAllocator *allocator, GstImxPhysMemory *memory);
};
struct _GstImxPhysMemory
{
GstMemory mem;
gpointer mapped_virt_addr;
gst_imx_phys_addr_t phys_addr;
GstMapFlags mapping_flags;
/* Counter to ensure the memory block isn't (un)mapped
* more often than necessary */
long mapping_refcount;
/* pointer for any additional internal data an allocator may define
* not for outside use; allocators do not have to use it */
gpointer internal;
};
GType gst_imx_phys_mem_allocator_get_type(void);
guintptr gst_imx_phys_memory_get_phys_addr(GstMemory *mem);
gboolean gst_imx_is_phys_memory(GstMemory *mem);
G_END_DECLS
#endif