Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * Copyright (C) 2003 Ivan Kalvachev
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #ifndef AVCODEC_XVMC_H
  22. #define AVCODEC_XVMC_H
  23.  
  24. /**
  25.  * @file
  26.  * @ingroup lavc_codec_hwaccel_xvmc
  27.  * Public libavcodec XvMC header.
  28.  */
  29.  
  30. #include <X11/extensions/XvMC.h>
  31.  
  32. #include "libavutil/attributes.h"
  33. #include "version.h"
  34. #include "avcodec.h"
  35.  
  36. /**
  37.  * @defgroup lavc_codec_hwaccel_xvmc XvMC
  38.  * @ingroup lavc_codec_hwaccel
  39.  *
  40.  * @{
  41.  */
  42.  
  43. #define AV_XVMC_ID                    0x1DC711C0  /**< special value to ensure that regular pixel routines haven't corrupted the struct
  44.                                                        the number is 1337 speak for the letters IDCT MCo (motion compensation) */
  45.  
  46. attribute_deprecated struct xvmc_pix_fmt {
  47.     /** The field contains the special constant value AV_XVMC_ID.
  48.         It is used as a test that the application correctly uses the API,
  49.         and that there is no corruption caused by pixel routines.
  50.         - application - set during initialization
  51.         - libavcodec  - unchanged
  52.     */
  53.     int             xvmc_id;
  54.  
  55.     /** Pointer to the block array allocated by XvMCCreateBlocks().
  56.         The array has to be freed by XvMCDestroyBlocks().
  57.         Each group of 64 values represents one data block of differential
  58.         pixel information (in MoCo mode) or coefficients for IDCT.
  59.         - application - set the pointer during initialization
  60.         - libavcodec  - fills coefficients/pixel data into the array
  61.     */
  62.     short*          data_blocks;
  63.  
  64.     /** Pointer to the macroblock description array allocated by
  65.         XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
  66.         - application - set the pointer during initialization
  67.         - libavcodec  - fills description data into the array
  68.     */
  69.     XvMCMacroBlock* mv_blocks;
  70.  
  71.     /** Number of macroblock descriptions that can be stored in the mv_blocks
  72.         array.
  73.         - application - set during initialization
  74.         - libavcodec  - unchanged
  75.     */
  76.     int             allocated_mv_blocks;
  77.  
  78.     /** Number of blocks that can be stored at once in the data_blocks array.
  79.         - application - set during initialization
  80.         - libavcodec  - unchanged
  81.     */
  82.     int             allocated_data_blocks;
  83.  
  84.     /** Indicate that the hardware would interpret data_blocks as IDCT
  85.         coefficients and perform IDCT on them.
  86.         - application - set during initialization
  87.         - libavcodec  - unchanged
  88.     */
  89.     int             idct;
  90.  
  91.     /** In MoCo mode it indicates that intra macroblocks are assumed to be in
  92.         unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
  93.         - application - set during initialization
  94.         - libavcodec  - unchanged
  95.     */
  96.     int             unsigned_intra;
  97.  
  98.     /** Pointer to the surface allocated by XvMCCreateSurface().
  99.         It has to be freed by XvMCDestroySurface() on application exit.
  100.         It identifies the frame and its state on the video hardware.
  101.         - application - set during initialization
  102.         - libavcodec  - unchanged
  103.     */
  104.     XvMCSurface*    p_surface;
  105.  
  106. /** Set by the decoder before calling ff_draw_horiz_band(),
  107.     needed by the XvMCRenderSurface function. */
  108. //@{
  109.     /** Pointer to the surface used as past reference
  110.         - application - unchanged
  111.         - libavcodec  - set
  112.     */
  113.     XvMCSurface*    p_past_surface;
  114.  
  115.     /** Pointer to the surface used as future reference
  116.         - application - unchanged
  117.         - libavcodec  - set
  118.     */
  119.     XvMCSurface*    p_future_surface;
  120.  
  121.     /** top/bottom field or frame
  122.         - application - unchanged
  123.         - libavcodec  - set
  124.     */
  125.     unsigned int    picture_structure;
  126.  
  127.     /** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
  128.         - application - unchanged
  129.         - libavcodec  - set
  130.     */
  131.     unsigned int    flags;
  132. //}@
  133.  
  134.     /** Number of macroblock descriptions in the mv_blocks array
  135.         that have already been passed to the hardware.
  136.         - application - zeroes it on get_buffer().
  137.                         A successful ff_draw_horiz_band() may increment it
  138.                         with filled_mb_block_num or zero both.
  139.         - libavcodec  - unchanged
  140.     */
  141.     int             start_mv_blocks_num;
  142.  
  143.     /** Number of new macroblock descriptions in the mv_blocks array (after
  144.         start_mv_blocks_num) that are filled by libavcodec and have to be
  145.         passed to the hardware.
  146.         - application - zeroes it on get_buffer() or after successful
  147.                         ff_draw_horiz_band().
  148.         - libavcodec  - increment with one of each stored MB
  149.     */
  150.     int             filled_mv_blocks_num;
  151.  
  152.     /** Number of the next free data block; one data block consists of
  153.         64 short values in the data_blocks array.
  154.         All blocks before this one have already been claimed by placing their
  155.         position into the corresponding block description structure field,
  156.         that are part of the mv_blocks array.
  157.         - application - zeroes it on get_buffer().
  158.                         A successful ff_draw_horiz_band() may zero it together
  159.                         with start_mb_blocks_num.
  160.         - libavcodec  - each decoded macroblock increases it by the number
  161.                         of coded blocks it contains.
  162.     */
  163.     int             next_free_data_block_num;
  164. };
  165.  
  166. /**
  167.  * @}
  168.  */
  169.  
  170. #endif /* AVCODEC_XVMC_H */
  171.