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#pragma message("XvMC is no longer supported; this header is deprecated and will be removed") 31 32#include <X11/extensions/XvMC.h> 33 34#include "libavutil/attributes.h" 35#include "avcodec.h" 36 37/** 38 * @defgroup lavc_codec_hwaccel_xvmc XvMC 39 * @ingroup lavc_codec_hwaccel 40 * 41 * @{ 42 */ 43 44#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct 45 the number is 1337 speak for the letters IDCT MCo (motion compensation) */ 46 47struct attribute_deprecated xvmc_pix_fmt { 48 /** The field contains the special constant value AV_XVMC_ID. 49 It is used as a test that the application correctly uses the API, 50 and that there is no corruption caused by pixel routines. 51 - application - set during initialization 52 - libavcodec - unchanged 53 */ 54 int xvmc_id; 55 56 /** Pointer to the block array allocated by XvMCCreateBlocks(). 57 The array has to be freed by XvMCDestroyBlocks(). 58 Each group of 64 values represents one data block of differential 59 pixel information (in MoCo mode) or coefficients for IDCT. 60 - application - set the pointer during initialization 61 - libavcodec - fills coefficients/pixel data into the array 62 */ 63 short* data_blocks; 64 65 /** Pointer to the macroblock description array allocated by 66 XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks(). 67 - application - set the pointer during initialization 68 - libavcodec - fills description data into the array 69 */ 70 XvMCMacroBlock* mv_blocks; 71 72 /** Number of macroblock descriptions that can be stored in the mv_blocks 73 array. 74 - application - set during initialization 75 - libavcodec - unchanged 76 */ 77 int allocated_mv_blocks; 78 79 /** Number of blocks that can be stored at once in the data_blocks array. 80 - application - set during initialization 81 - libavcodec - unchanged 82 */ 83 int allocated_data_blocks; 84 85 /** Indicate that the hardware would interpret data_blocks as IDCT 86 coefficients and perform IDCT on them. 87 - application - set during initialization 88 - libavcodec - unchanged 89 */ 90 int idct; 91 92 /** In MoCo mode it indicates that intra macroblocks are assumed to be in 93 unsigned format; same as the XVMC_INTRA_UNSIGNED flag. 94 - application - set during initialization 95 - libavcodec - unchanged 96 */ 97 int unsigned_intra; 98 99 /** Pointer to the surface allocated by XvMCCreateSurface(). 100 It has to be freed by XvMCDestroySurface() on application exit. 101 It identifies the frame and its state on the video hardware. 102 - application - set during initialization 103 - libavcodec - unchanged 104 */ 105 XvMCSurface* p_surface; 106 107/** Set by the decoder before calling ff_draw_horiz_band(), 108 needed by the XvMCRenderSurface function. */ 109//@{ 110 /** Pointer to the surface used as past reference 111 - application - unchanged 112 - libavcodec - set 113 */ 114 XvMCSurface* p_past_surface; 115 116 /** Pointer to the surface used as future reference 117 - application - unchanged 118 - libavcodec - set 119 */ 120 XvMCSurface* p_future_surface; 121 122 /** top/bottom field or frame 123 - application - unchanged 124 - libavcodec - set 125 */ 126 unsigned int picture_structure; 127 128 /** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence 129 - application - unchanged 130 - libavcodec - set 131 */ 132 unsigned int flags; 133//}@ 134 135 /** Number of macroblock descriptions in the mv_blocks array 136 that have already been passed to the hardware. 137 - application - zeroes it on get_buffer(). 138 A successful ff_draw_horiz_band() may increment it 139 with filled_mb_block_num or zero both. 140 - libavcodec - unchanged 141 */ 142 int start_mv_blocks_num; 143 144 /** Number of new macroblock descriptions in the mv_blocks array (after 145 start_mv_blocks_num) that are filled by libavcodec and have to be 146 passed to the hardware. 147 - application - zeroes it on get_buffer() or after successful 148 ff_draw_horiz_band(). 149 - libavcodec - increment with one of each stored MB 150 */ 151 int filled_mv_blocks_num; 152 153 /** Number of the next free data block; one data block consists of 154 64 short values in the data_blocks array. 155 All blocks before this one have already been claimed by placing their 156 position into the corresponding block description structure field, 157 that are part of the mv_blocks array. 158 - application - zeroes it on get_buffer(). 159 A successful ff_draw_horiz_band() may zero it together 160 with start_mb_blocks_num. 161 - libavcodec - each decoded macroblock increases it by the number 162 of coded blocks it contains. 163 */ 164 int next_free_data_block_num; 165}; 166 167/** 168 * @} 169 */ 170 171#endif /* AVCODEC_XVMC_H */ 172