tor-browser

The Tor Browser
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vdpau.h (2916B)

      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 Libav.
      8 *
      9 * Libav 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 * Libav 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 Libav; 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 * @file
     29 * @ingroup lavc_codec_hwaccel_vdpau
     30 * Public libavcodec VDPAU header.
     31 */
     32 
     33 
     34 /**
     35 * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
     36 * @ingroup lavc_codec_hwaccel
     37 *
     38 * VDPAU hardware acceleration has two modules
     39 * - VDPAU decoding
     40 * - VDPAU presentation
     41 *
     42 * The VDPAU decoding module parses all headers using Libav
     43 * parsing mechanisms and uses VDPAU for the actual decoding.
     44 *
     45 * As per the current implementation, the actual decoding
     46 * and rendering (API calls) are done as part of the VDPAU
     47 * presentation (vo_vdpau.c) module.
     48 *
     49 * @{
     50 */
     51 
     52 #include <vdpau/vdpau.h>
     53 #include <vdpau/vdpau_x11.h>
     54 
     55 /** @brief The videoSurface is used for rendering. */
     56 #define FF_VDPAU_STATE_USED_FOR_RENDER 1
     57 
     58 /**
     59 * @brief The videoSurface is needed for reference/prediction.
     60 * The codec manipulates this.
     61 */
     62 #define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
     63 
     64 /**
     65 * @brief This structure is used as a callback between the Libav
     66 * decoder (vd_) and presentation (vo_) module.
     67 * This is used for defining a video frame containing surface,
     68 * picture parameter, bitstream information etc which are passed
     69 * between the Libav decoder and its clients.
     70 */
     71 struct vdpau_render_state {
     72    VdpVideoSurface surface; ///< Used as rendered surface, never changed.
     73 
     74    int state; ///< Holds FF_VDPAU_STATE_* values.
     75 
     76    /** picture parameter information for all supported codecs */
     77    union VdpPictureInfo {
     78        VdpPictureInfoH264        h264;
     79        VdpPictureInfoMPEG1Or2    mpeg;
     80        VdpPictureInfoVC1          vc1;
     81        VdpPictureInfoMPEG4Part2 mpeg4;
     82    } info;
     83 
     84    /** Describe size/location of the compressed video data.
     85        Set to 0 when freeing bitstream_buffers. */
     86    int bitstream_buffers_allocated;
     87    int bitstream_buffers_used;
     88    /** The user is responsible for freeing this buffer using av_freep(). */
     89    VdpBitstreamBuffer *bitstream_buffers;
     90 };
     91 
     92 /* @}*/
     93 
     94 #endif /* AVCODEC_VDPAU_H */