media/ffvpx/libavutil/hwcontext_vaapi.h

   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 */