1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVUTIL_HWCONTEXT_VAAPI_H
20 #define AVUTIL_HWCONTEXT_VAAPI_H
21 
22 #include <va/va.h>
23 
24 /**
25  * @file
26  * API-specific header for AV_HWDEVICE_TYPE_VAAPI.
27  *
28  * Dynamic frame pools are supported, but note that any pool used as a render
29  * target is required to be of fixed size in order to be be usable as an
30  * argument to vaCreateContext().
31  *
32  * For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs
33  * with the data pointer set to a VASurfaceID.
34  */
35 
36 enum {
37     /**
38      * The quirks field has been set by the user and should not be detected
39      * automatically by av_hwdevice_ctx_init().
40      */
41     AV_VAAPI_DRIVER_QUIRK_USER_SET = (1 << 0),
42     /**
43      * The driver does not destroy parameter buffers when they are used by
44      * vaRenderPicture().  Additional code will be required to destroy them
45      * separately afterwards.
46      */
47     AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS = (1 << 1),
48 
49     /**
50      * The driver does not support the VASurfaceAttribMemoryType attribute,
51      * so the surface allocation code will not try to use it.
52      */
53     AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE = (1 << 2),
54 
55     /**
56      * The driver does not support surface attributes at all.
57      * The surface allocation code will never pass them to surface allocation,
58      * and the results of the vaQuerySurfaceAttributes() call will be faked.
59      */
60     AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES = (1 << 3),
61 };
62 
63 /**
64  * VAAPI connection details.
65  *
66  * Allocated as AVHWDeviceContext.hwctx
67  */
68 typedef struct AVVAAPIDeviceContext {
69     /**
70      * The VADisplay handle, to be filled by the user.
71      */
72     VADisplay display;
73     /**
74      * Driver quirks to apply - this is filled by av_hwdevice_ctx_init(),
75      * with reference to a table of known drivers, unless the
76      * AV_VAAPI_DRIVER_QUIRK_USER_SET bit is already present.  The user
77      * may need to refer to this field when performing any later
78      * operations using VAAPI with the same VADisplay.
79      */
80     unsigned int driver_quirks;
81 } AVVAAPIDeviceContext;
82 
83 /**
84  * VAAPI-specific data associated with a frame pool.
85  *
86  * Allocated as AVHWFramesContext.hwctx.
87  */
88 typedef struct AVVAAPIFramesContext {
89     /**
90      * Set by the user to apply surface attributes to all surfaces in
91      * the frame pool.  If null, default settings are used.
92      */
93     VASurfaceAttrib *attributes;
94     int           nb_attributes;
95     /**
96      * The surfaces IDs of all surfaces in the pool after creation.
97      * Only valid if AVHWFramesContext.initial_pool_size was positive.
98      * These are intended to be used as the render_targets arguments to
99      * vaCreateContext().
100      */
101     VASurfaceID     *surface_ids;
102     int           nb_surfaces;
103 } AVVAAPIFramesContext;
104 
105 /**
106  * VAAPI hardware pipeline configuration details.
107  *
108  * Allocated with av_hwdevice_hwconfig_alloc().
109  */
110 typedef struct AVVAAPIHWConfig {
111     /**
112      * ID of a VAAPI pipeline configuration.
113      */
114     VAConfigID config_id;
115 } AVVAAPIHWConfig;
116 
117 #endif /* AVUTIL_HWCONTEXT_VAAPI_H */
118