/*
* DXVA2 HW acceleration
*
* copyright (c) 2009 Laurent Aimar
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#ifndef AVCODEC_DXVA_H
#define AVCODEC_DXVA_H

/**
* @file
* @ingroup lavc_codec_hwaccel_dxva2
* Public libavcodec DXVA2 header.
*/

#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
#endif

#include <stdint.h>
#include <d3d9.h>
#include <dxva2api.h>

/**
* @defgroup lavc_codec_hwaccel_dxva2 DXVA2
* @ingroup lavc_codec_hwaccel
*
* @{
*/

#define FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG 1 ///< Work around for DXVA2 and old UVD/UVD+ ATI video cards
#define FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO 2 ///< Work around for DXVA2 and old Intel GPUs with ClearVideo interface

/**
* This structure is used to provides the necessary configurations and data
* to the DXVA2 FFmpeg HWAccel implementation.
*
* The application must make it available as AVCodecContext.hwaccel_context.
*/
struct dxva_context {
/**
* DXVA2 decoder object
*/
IDirectXVideoDecoder *decoder;

/**
* DXVA2 configuration used to create the decoder
*/
const DXVA2_ConfigPictureDecode *cfg;

/**
* The number of surface in the surface array
*/
unsigned surface_count;

/**
* The array of Direct3D surfaces used to create the decoder
*/
LPDIRECT3DSURFACE9 *surface;

/**
* A bit field configuring the workarounds needed for using the decoder
*/
uint64_t workaround;

/**
* Private to the FFmpeg AVHWAccel implementation
*/
unsigned report_id;
};

/**
* @}
*/

#endif /* AVCODEC_DXVA_H */