libavcodec/vdpau.h

   1 /*
   2  * The Video Decode and Presentation API for UNIX (VDPAU) is used for
   3  * hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.
   4  *
   5  * Copyright (C) 2008 NVIDIA
   6  *
   7  * This file is part of FFmpeg.
   8  *
   9  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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_VDPAU_H
  25 #define AVCODEC_VDPAU_H
  26
  27 /**
  28  * \defgroup Decoder VDPAU Decoder and Renderer
  29  *
  30  * VDPAU hardware acceleration has two modules
  31  * - VDPAU decoding
  32  * - VDPAU presentation
  33  *
  34  * The VDPAU decoding module parses all headers using FFmpeg
  35  * parsing mechanisms and uses VDPAU for the actual decoding.
  36  *
  37  * As per the current implementation, the actual decoding
  38  * and rendering (API calls) are done as part of the VDPAU
  39  * presentation (vo_vdpau.c) module.
  40  *
  41  * @{
  42  * \defgroup  VDPAU_Decoding VDPAU Decoding
  43  * \ingroup Decoder
  44  * @{
  45  */
  46
  47 #include <vdpau/vdpau.h>
  48 #include <vdpau/vdpau_x11.h>
  49
  50 /** \brief The videoSurface is used for rendering. */
  51 #define FF_VDPAU_STATE_USED_FOR_RENDER 1
  52
  53 /**
  54  * \brief The videoSurface is needed for reference/prediction.
  55  * The codec manipulates this.
  56  */
  57 #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
  58
  59 /**
  60  * \brief This structure is used as a callback between the FFmpeg
  61  * decoder (vd_) and presentation (vo_) module.
  62  * This is used for defining a video frame containing surface,
  63  * picture parameter, bitstream information etc which are passed
  64  * between the FFmpeg decoder and its clients.
  65  */
  66 struct vdpau_render_state {
  67     VdpVideoSurface surface; ///< Used as rendered surface, never changed.
  68
  69     int state; ///< Holds FF_VDPAU_STATE_* values.
  70
  71     /** picture parameter information for all supported codecs */
  72     union VdpPictureInfo {
  73         VdpPictureInfoH264     h264;
  74         VdpPictureInfoMPEG1Or2 mpeg;
  75         VdpPictureInfoVC1       vc1;
  76     } info;
  77
  78     /** Describe size/location of the compressed video data. */
  79     int bitstream_buffers_allocated;
  80     int bitstream_buffers_used;
  81     VdpBitstreamBuffer *bitstream_buffers;
  82 };
  83
  84 /* @}*/
  85
  86 #endif /* AVCODEC_VDPAU_H */