text: /*
   * 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_DXVA2_H
  #define AVCODEC_DXVA2_H
  
  /**
   * @file
   * @ingroup lavc_codec_hwaccel_dxva2
   * Public libavcodec DXVA2 header.
   */
  
  #if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0602
  #undef _WIN32_WINNT
  #define _WIN32_WINNT 0x0602
  #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_DXVA2_H */
  