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171 lines
5.9 KiB
C
Executable File
171 lines
5.9 KiB
C
Executable File
/*
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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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/**
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* @file
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* @ingroup lavc_codec_hwaccel_xvmc
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* Public libavcodec XvMC header.
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*/
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#include <X11/extensions/XvMC.h>
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#include "libavutil/attributes.h"
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#include "version.h"
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#include "avcodec.h"
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/**
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* @defgroup lavc_codec_hwaccel_xvmc XvMC
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* @ingroup lavc_codec_hwaccel
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*
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* @{
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*/
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#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct
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the number is 1337 speak for the letters IDCT MCo (motion compensation) */
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struct attribute_deprecated xvmc_pix_fmt {
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/** The field contains the special constant value AV_XVMC_ID.
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It is used as a test that the application correctly uses the API,
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and that there is no corruption caused by pixel routines.
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- application - set during initialization
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- libavcodec - unchanged
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*/
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int xvmc_id;
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/** Pointer to the block array allocated by XvMCCreateBlocks().
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The array has to be freed by XvMCDestroyBlocks().
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Each group of 64 values represents one data block of differential
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pixel information (in MoCo mode) or coefficients for IDCT.
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- application - set the pointer during initialization
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- libavcodec - fills coefficients/pixel data into the array
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*/
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short* data_blocks;
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/** Pointer to the macroblock description array allocated by
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XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
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- application - set the pointer during initialization
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- libavcodec - fills description data into the array
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*/
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XvMCMacroBlock* mv_blocks;
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/** Number of macroblock descriptions that can be stored in the mv_blocks
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array.
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- application - set during initialization
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- libavcodec - unchanged
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*/
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int allocated_mv_blocks;
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/** Number of blocks that can be stored at once in the data_blocks array.
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- application - set during initialization
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- libavcodec - unchanged
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*/
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int allocated_data_blocks;
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/** Indicate that the hardware would interpret data_blocks as IDCT
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coefficients and perform IDCT on them.
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- application - set during initialization
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- libavcodec - unchanged
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*/
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int idct;
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/** In MoCo mode it indicates that intra macroblocks are assumed to be in
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unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
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- application - set during initialization
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- libavcodec - unchanged
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*/
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int unsigned_intra;
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/** Pointer to the surface allocated by XvMCCreateSurface().
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It has to be freed by XvMCDestroySurface() on application exit.
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It identifies the frame and its state on the video hardware.
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- application - set during initialization
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- libavcodec - unchanged
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*/
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XvMCSurface* p_surface;
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/** Set by the decoder before calling ff_draw_horiz_band(),
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needed by the XvMCRenderSurface function. */
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//@{
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/** Pointer to the surface used as past reference
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- application - unchanged
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- libavcodec - set
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*/
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XvMCSurface* p_past_surface;
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/** Pointer to the surface used as future reference
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- application - unchanged
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- libavcodec - set
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*/
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XvMCSurface* p_future_surface;
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/** top/bottom field or frame
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- application - unchanged
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- libavcodec - set
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*/
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unsigned int picture_structure;
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/** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
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- application - unchanged
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- libavcodec - set
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*/
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unsigned int flags;
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//}@
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/** Number of macroblock descriptions in the mv_blocks array
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that have already been passed to the hardware.
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- application - zeroes it on get_buffer().
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A successful ff_draw_horiz_band() may increment it
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with filled_mb_block_num or zero both.
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- libavcodec - unchanged
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*/
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int start_mv_blocks_num;
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/** Number of new macroblock descriptions in the mv_blocks array (after
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start_mv_blocks_num) that are filled by libavcodec and have to be
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passed to the hardware.
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- application - zeroes it on get_buffer() or after successful
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ff_draw_horiz_band().
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- libavcodec - increment with one of each stored MB
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*/
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int filled_mv_blocks_num;
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/** Number of the next free data block; one data block consists of
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64 short values in the data_blocks array.
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All blocks before this one have already been claimed by placing their
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position into the corresponding block description structure field,
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that are part of the mv_blocks array.
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- application - zeroes it on get_buffer().
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A successful ff_draw_horiz_band() may zero it together
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with start_mb_blocks_num.
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- libavcodec - each decoded macroblock increases it by the number
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of coded blocks it contains.
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*/
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int next_free_data_block_num;
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};
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/**
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* @}
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*/
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#endif /* AVCODEC_XVMC_H */
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