/*

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

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

 *

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

 *

 * This file is part of Libav.

 *

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

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

 * License as published by the Free Software Foundation; either

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

 *

 * Libav 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

 * Lesser General Public License for more details.

 *

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

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

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

 */

#ifndef AVCODEC_VAAPI_H

#define AVCODEC_VAAPI_H

/**

 * @file

 * @ingroup lavc_codec_hwaccel_vaapi

 * Public libavcodec VA API header.

 */

#include <stdint.h>

/**

 * @defgroup lavc_codec_hwaccel_vaapi VA API Decoding

 * @ingroup lavc_codec_hwaccel

 * @{

 */

/**

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

 * the client video application.

 * This shall be zero-allocated and available as

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

 * during initialization or through each AVCodecContext.get_buffer()

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

 * decoding functions.

 */

struct vaapi_context {

    /**

     * Window system dependent data

     *

     * - encoding: unused

     * - decoding: Set by user

     */

    void *display;

    /**

     * Configuration ID

     *

     * - encoding: unused

     * - decoding: Set by user

     */

    uint32_t config_id;

    /**

     * Context ID (video decode pipeline)

     *

     * - encoding: unused

     * - decoding: Set by user

     */

    uint32_t context_id;

    /**

     * VAPictureParameterBuffer ID

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    uint32_t pic_param_buf_id;

    /**

     * VAIQMatrixBuffer ID

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    uint32_t iq_matrix_buf_id;

    /**

     * VABitPlaneBuffer ID (for VC-1 decoding)

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    uint32_t bitplane_buf_id;

    /**

     * Slice parameter/data buffer IDs

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    uint32_t *slice_buf_ids;

    /**

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

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    unsigned int n_slice_buf_ids;

    /**

     * Size of pre-allocated slice_buf_ids

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    unsigned int slice_buf_ids_alloc;

    /**

     * Pointer to VASliceParameterBuffers

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    void *slice_params;

    /**

     * Size of a VASliceParameterBuffer element

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    unsigned int slice_param_size;

    /**

     * Size of pre-allocated slice_params

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    unsigned int slice_params_alloc;

    /**

     * Number of slices currently filled in

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    unsigned int slice_count;

    /**

     * Pointer to slice data buffer base

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    const uint8_t *slice_data;

    /**

     * Current size of slice data

     *

     * - encoding: unused

     * - decoding: Set by libavcodec

     */

    uint32_t slice_data_size;

};

/* @} */

#endif /* AVCODEC_VAAPI_H */