1 /*

     2  * Video Acceleration API (shared data between Libav and the video player)

     3  * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1

     4  *

     5  * Copyright (C) 2008-2009 Splitted-Desktop Systems

     6  *

     7  * This file is part of Libav.

     8  *

     9  * Libav is free software; you can redistribute it and/or

    10  * modify it under the terms of the GNU Lesser General Public

    11  * License as published by the Free Software Foundation; either

    12  * version 2.1 of the License, or (at your option) any later version.

    13  *

    14  * Libav is distributed in the hope that it will be useful,

    15  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    17  * Lesser General Public License for more details.

    18  *

    19  * You should have received a copy of the GNU Lesser General Public

    20  * License along with Libav; if not, write to the Free Software

    21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

    22  */

    23 

    24 #ifndef AVCODEC_VAAPI_H

    25 #define AVCODEC_VAAPI_H

    26 

    27 /**

    28  * @file

    29  * @ingroup lavc_codec_hwaccel_vaapi

    30  * Public libavcodec VA API header.

    31  */

    32 

    33 #include <stdint.h>

    34 

    35 /**

    36  * @defgroup lavc_codec_hwaccel_vaapi VA API Decoding

    37  * @ingroup lavc_codec_hwaccel

    38  * @{

    39  */

    40 

    41 /**

    42  * This structure is used to share data between the Libav library and

    43  * the client video application.

    44  * This shall be zero-allocated and available as

    45  * AVCodecContext.hwaccel_context. All user members can be set once

    46  * during initialization or through each AVCodecContext.get_buffer()

    47  * function call. In any case, they must be valid prior to calling

    48  * decoding functions.

    49  */

    50 struct vaapi_context {

    51     /**

    52      * Window system dependent data

    53      *

    54      * - encoding: unused

    55      * - decoding: Set by user

    56      */

    57     void *display;

    58 

    59     /**

    60      * Configuration ID

    61      *

    62      * - encoding: unused

    63      * - decoding: Set by user

    64      */

    65     uint32_t config_id;

    66 

    67     /**

    68      * Context ID (video decode pipeline)

    69      *

    70      * - encoding: unused

    71      * - decoding: Set by user

    72      */

    73     uint32_t context_id;

    74 

    75     /**

    76      * VAPictureParameterBuffer ID

    77      *

    78      * - encoding: unused

    79      * - decoding: Set by libavcodec

    80      */

    81     uint32_t pic_param_buf_id;

    82 

    83     /**

    84      * VAIQMatrixBuffer ID

    85      *

    86      * - encoding: unused

    87      * - decoding: Set by libavcodec

    88      */

    89     uint32_t iq_matrix_buf_id;

    90 

    91     /**

    92      * VABitPlaneBuffer ID (for VC-1 decoding)

    93      *

    94      * - encoding: unused

    95      * - decoding: Set by libavcodec

    96      */

    97     uint32_t bitplane_buf_id;

    98 

    99     /**

   100      * Slice parameter/data buffer IDs

   101      *

   102      * - encoding: unused

   103      * - decoding: Set by libavcodec

   104      */

   105     uint32_t *slice_buf_ids;

   106 

   107     /**

   108      * Number of effective slice buffer IDs to send to the HW

   109      *

   110      * - encoding: unused

   111      * - decoding: Set by libavcodec

   112      */

   113     unsigned int n_slice_buf_ids;

   114 

   115     /**

   116      * Size of pre-allocated slice_buf_ids

   117      *

   118      * - encoding: unused

   119      * - decoding: Set by libavcodec

   120      */

   121     unsigned int slice_buf_ids_alloc;

   122 

   123     /**

   124      * Pointer to VASliceParameterBuffers

   125      *

   126      * - encoding: unused

   127      * - decoding: Set by libavcodec

   128      */

   129     void *slice_params;

   130 

   131     /**

   132      * Size of a VASliceParameterBuffer element

   133      *

   134      * - encoding: unused

   135      * - decoding: Set by libavcodec

   136      */

   137     unsigned int slice_param_size;

   138 

   139     /**

   140      * Size of pre-allocated slice_params

   141      *

   142      * - encoding: unused

   143      * - decoding: Set by libavcodec

   144      */

   145     unsigned int slice_params_alloc;

   146 

   147     /**

   148      * Number of slices currently filled in

   149      *

   150      * - encoding: unused

   151      * - decoding: Set by libavcodec

   152      */

   153     unsigned int slice_count;

   154 

   155     /**

   156      * Pointer to slice data buffer base

   157      * - encoding: unused

   158      * - decoding: Set by libavcodec

   159      */

   160     const uint8_t *slice_data;

   161 

   162     /**

   163      * Current size of slice data

   164      *

   165      * - encoding: unused

   166      * - decoding: Set by libavcodec

   167      */

   168     uint32_t slice_data_size;

   169 };

   170 

   171 /* @} */

   172 

   173 #endif /* AVCODEC_VAAPI_H */