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ffmpeg / libavcodec / xvmc.h @ af28efa2

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/*
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 * Copyright (C) 2003 Ivan Kalvachev
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVCODEC_XVMC_H
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#define AVCODEC_XVMC_H
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <X11/extensions/Xv.h>
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#include <X11/extensions/Xvlib.h>
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#include <X11/extensions/XvMClib.h>
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//the surface should be shown, the video driver manipulates this
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#define MP_XVMC_STATE_DISPLAY_PENDING 1
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//the surface is needed for prediction, the codec manipulates this
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#define MP_XVMC_STATE_PREDICTION 2
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//this surface is needed for subpicture rendering
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#define MP_XVMC_STATE_OSD_SOURCE 4
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//                     1337    IDCT MCo
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#define MP_XVMC_RENDER_MAGIC 0x1DC711C0
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struct xvmc_render_state {
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    //these are not changed by the decoder!
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    int  magic; ///< used as check for memory corruption by regular pixel routines
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    short * data_blocks;
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    XvMCMacroBlock * mv_blocks;
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    int total_number_of_mv_blocks;
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    int total_number_of_data_blocks;
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    int mc_type; //XVMC_MPEG1/2/4,XVMC_H263 without XVMC_IDCT
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    int idct;    //< indicate that IDCT acceleration level is used
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    int chroma_format;  ///< XVMC_CHROMA_FORMAT_420/422/444
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    int unsigned_intra; //+-128 for intra pictures after clipping
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    XvMCSurface* p_surface; //pointer to rendered surface, never changed
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    //these are changed by the decoder
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    //used by the XvMCRenderSurface function
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    XvMCSurface* p_past_surface; //pointer to the past surface
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    XvMCSurface* p_future_surface; //pointer to the future prediction surface
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    unsigned int picture_structure; //top/bottom fields or frame!
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    unsigned int flags; //XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
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    unsigned int display_flags; //1,2 or 1+2 fields for XvMCPutSurface
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    //these are for internal communication
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    int state; //0 - free, 1 - waiting to display, 2 - waiting for prediction
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    int start_mv_blocks_num; //offset in the array for the current slice, updated by vo
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    int filled_mv_blocks_num; //processed mv block in this slice, changed by decoder
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    int next_free_data_block_num; //used in add_mv_block, pointer to next free block
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    //extensions
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    void * p_osd_target_surface_render; //pointer to the surface where subpicture is rendered
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};
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#endif /* AVCODEC_XVMC_H */