1 /*
2  * GStreamer
3  * Copyright (C) 2012 Edward Hervey <edward@collabora.com>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Library General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU Library General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18  * Boston, MA 02111-1307, USA.
19  */
20 
21 #ifndef _GST_VDP_VIDEO_MEMORY_H_
22 #define _GST_VDP_VIDEO_MEMORY_H_
23 
24 #include <gst/gst.h>
25 #include <gst/gstmemory.h>
26 #include <gst/gstallocator.h>
27 #include <gst/video/video-info.h>
28 #include <gst/video/gstvideometa.h>
29 
30 #include "gstvdpdevice.h"
31 
32 G_BEGIN_DECLS
33 
34 #define GST_TYPE_VDP_VIDEO_ALLOCATOR (gst_vdp_video_allocator_get_type())
35 GType gst_vdp_video_allocator_get_type(void);
36 
37 #define GST_IS_VDP_VIDEO_ALLOCATOR(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VDP_VIDEO_ALLOCATOR))
38 #define GST_IS_VDP_VIDEO_ALLOCATOR_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_VDP_VIDEO_ALLOCATOR))
39 #define GST_VDP_VIDEO_ALLOCATOR_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VDP_VIDEO_ALLOCATOR, GstVdpVideoAllocatorClass))
40 #define GST_VDP_VIDEO_ALLOCATOR(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VDP_VIDEO_ALLOCATOR, GstVdpVideoAllocator))
41 #define GST_VDP_VIDEO_ALLOCATOR_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_VDP_VIDEO_ALLOCATOR, GstVdpVideoAllocatorClass))
42 #define GST_VDP_VIDEO_ALLOCATOR_CAST(obj)            ((GstVdpVideoAllocator *)(obj))
43 
44 typedef struct _GstVdpVideoMemory GstVdpVideoMemory;
45 typedef struct _GstVdpVideoAllocator GstVdpVideoAllocator;
46 typedef struct _GstVdpVideoAllocatorClass GstVdpVideoAllocatorClass;
47 
48 /**
49  * GstVdpVideoMemory:
50  * @mem: the parent object
51  * @device: the #GstVdpDevice to use
52  * @surface: the #VdpVideoSurface
53  *
54  * Represents information about a #VdpVideoSurface
55  */
56 struct _GstVdpVideoMemory
57 {
58   GstMemory          mem;
59 
60   GstVdpDevice      *device;
61   VdpVideoSurface    surface;
62 
63   GstVideoInfo      *info;
64   VdpChromaType      chroma_type;
65   VdpYCbCrFormat     ycbcr_format;
66 
67   /* Cached data for mapping */
68   volatile gint      refcount;
69   GstMapFlags        map_flags;
70   guint		     n_planes;
71   guint8            *cache;
72   void *             cached_data[4];
73   uint32_t           destination_pitches[4];
74 };
75 
76 #define GST_VDP_VIDEO_MEMORY_ALLOCATOR   "VdpVideoMemory"
77 
78 #define GST_CAPS_FEATURE_MEMORY_VDPAU    "memory:VdpVideoSurface"
79 
80 void gst_vdp_video_memory_init (void);
81 
82 GstMemory *
83 gst_vdp_video_memory_alloc (GstVdpDevice * device, GstVideoInfo *info);
84 
85 gboolean gst_vdp_video_memory_map(GstVideoMeta * meta, guint plane,
86 				  GstMapInfo * info, gpointer * data,
87 				  gint * stride, GstMapFlags flags);
88 gboolean gst_vdp_video_memory_unmap(GstVideoMeta * meta, guint plane,
89 				    GstMapInfo * info);
90 
91 struct _GstVdpVideoAllocator
92 {
93   GstAllocator parent;
94 };
95 
96 struct _GstVdpVideoAllocatorClass
97 {
98   GstAllocatorClass parent_class;
99 };
100 
101 G_END_DECLS
102 
103 #endif /* _GST_VDP_VIDEO_MEMORY_H_ */
104