/*

  * The Video Decode and Presentation API for UNIX (VDPAU) is used for
  * hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.

  *

  * Copyright (C) 2008 NVIDIA

  *
  * 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_VDPAU_H
 #define AVCODEC_VDPAU_H

 
 /**

  * @file
  * @ingroup lavc_codec_hwaccel_vdpau
  * Public libavcodec VDPAU header.
  */
 
 
 /**
  * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
  * @ingroup lavc_codec_hwaccel

  *

  * VDPAU hardware acceleration has two modules
  * - VDPAU decoding
  * - VDPAU presentation

  *

  * The VDPAU decoding module parses all headers using FFmpeg
  * parsing mechanisms and uses VDPAU for the actual decoding.

  *
  * As per the current implementation, the actual decoding

  * and rendering (API calls) are done as part of the VDPAU

  * presentation (vo_vdpau.c) module.
  *
  * @{
  */
 

 #include <vdpau/vdpau.h>
 #include <vdpau/vdpau_x11.h>

 union FFVdpPictureInfo {

     VdpPictureInfoH264        h264;
     VdpPictureInfoMPEG1Or2    mpeg;
     VdpPictureInfoVC1          vc1;
     VdpPictureInfoMPEG4Part2 mpeg4;
 };
 
 /**
  * This structure is used to share data between the libavcodec library and
  * the client video application.
  * The user shall zero-allocate the structure and make it available as
  * AVCodecContext.hwaccel_context. Members can be set by the user once
  * during initialization or through each AVCodecContext.get_buffer()
  * function call. In any case, they must be valid prior to calling
  * decoding functions.
  */
 typedef struct AVVDPAUContext {
     /**
      * VDPAU decoder handle
      *
      * Set by user.
      */
     VdpDecoder decoder;
 
     /**
      * VDPAU decoder render callback
      *
      * Set by the user.
      */
     VdpDecoderRender *render;
 
     /**
      * VDPAU picture information
      *
      * Set by libavcodec.
      */

     union FFVdpPictureInfo info;

 
     /**
      * Allocated size of the bitstream_buffers table.
      *
      * Set by libavcodec.
      */
     int bitstream_buffers_allocated;
 
     /**
      * Useful bitstream buffers in the bitstream buffers table.
      *
      * Set by libavcodec.
      */
     int bitstream_buffers_used;
 
    /**
      * Table of bitstream buffers.
      * The user is responsible for freeing this buffer using av_freep().
      *
      * Set by libavcodec.
      */
     VdpBitstreamBuffer *bitstream_buffers;
 } AVVDPAUContext;
 
 

 /** @brief The videoSurface is used for rendering. */

 #define FF_VDPAU_STATE_USED_FOR_RENDER 1
 
 /**

  * @brief The videoSurface is needed for reference/prediction.

  * The codec manipulates this.

  */
 #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
 
 /**

  * @brief This structure is used as a callback between the FFmpeg

  * decoder (vd_) and presentation (vo_) module.

  * This is used for defining a video frame containing surface,
  * picture parameter, bitstream information etc which are passed
  * between the FFmpeg decoder and its clients.

  */

 struct vdpau_render_state {
     VdpVideoSurface surface; ///< Used as rendered surface, never changed.

     int state; ///< Holds FF_VDPAU_STATE_* values.

     /** Describe size/location of the compressed video data.
         Set to 0 when freeing bitstream_buffers. */
     int bitstream_buffers_allocated;
     int bitstream_buffers_used;
     /** The user is responsible for freeing this buffer using av_freep(). */
     VdpBitstreamBuffer *bitstream_buffers;
 

     /** picture parameter information for all supported codecs */

     union FFVdpPictureInfo info;

 };
 
 /* @}*/
 

 #endif /* AVCODEC_VDPAU_H */