FFmpeg/libavcodec/xvmc_render.h

/*
 * Copyright (C) 2003 Ivan Kalvachev
 *
 * 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_XVMC_RENDER_H
#define AVCODEC_XVMC_RENDER_H

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xv.h>
#include <X11/extensions/Xvlib.h>
#include <X11/extensions/XvMClib.h>


//the surface should be shown, video driver manipulates this
#define MP_XVMC_STATE_DISPLAY_PENDING 1
//the surface is needed for prediction, codec manipulates this
#define MP_XVMC_STATE_PREDICTION 2
//this surface is needed for subpicture rendering
#define MP_XVMC_STATE_OSD_SOURCE 4
//                     1337    IDCT MCo
#define MP_XVMC_RENDER_MAGIC 0x1DC711C0

typedef   struct{
//these are not changed by the decoder!
  int  magic;

  short * data_blocks;
  XvMCMacroBlock * mv_blocks;
  int total_number_of_mv_blocks;
  int total_number_of_data_blocks;
  int mc_type;//XVMC_MPEG1/2/4,XVMC_H263 without XVMC_IDCT
  int idct;//Do we use IDCT acceleration?
  int chroma_format;//420,422,444
  int unsigned_intra;//+-128 for intra pictures after clip
  XvMCSurface* p_surface;//pointer to rendered surface, never changed

//these are changed by decoder
//used by XvMCRenderSurface function
  XvMCSurface* p_past_surface;//pointer to the past surface
  XvMCSurface* p_future_surface;//pointer to  the future prediction surface

  unsigned int picture_structure;//top/bottom fields or frame!
  unsigned int flags;//XVMC_SECOND_FIELD - 1'st or 2'd field in the sequence
  unsigned int display_flags; //1,2 or 1+2 fields for XvMCPutSurface,

//these are internal communication ones
  int state;//0-free, 1 Waiting to Display, 2 Waiting for prediction
  int start_mv_blocks_num;//offset in the array for the current slice, updated by vo
  int filled_mv_blocks_num;//processed mv block in this slice, changed by decoder

  int next_free_data_block_num;//used in add_mv_block, pointer to next free block
//extensions
  void * p_osd_target_surface_render;//pointer to the surface where subpicture is rendered

} xvmc_render_state_t;

#endif /* AVCODEC_XVMC_RENDER_H */