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| 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 #include <X11/extensions/XvMC.h> |
| 25 |
| 26 #include "avcodec.h" |
| 27 |
| 28 #if LIBAVCODEC_VERSION_MAJOR < 53 |
| 29 #define AV_XVMC_STATE_DISPLAY_PENDING 1 /** the surface should be sho
wn, the video driver manipulates this */ |
| 30 #define AV_XVMC_STATE_PREDICTION 2 /** the surface is needed for
prediction, the codec manipulates this */ |
| 31 #define AV_XVMC_STATE_OSD_SOURCE 4 /** the surface is needed for
subpicture rendering */ |
| 32 #endif |
| 33 #define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure t
hat regular pixel routines haven't corrupted the struct |
| 34 the number is 1337 speak
for the letters IDCT MCo (motion compensation) */ |
| 35 |
| 36 struct xvmc_pix_fmt { |
| 37 /** The field contains the special constant value AV_XVMC_ID. |
| 38 It is used as a test that the application correctly uses the API, |
| 39 and that there is no corruption caused by pixel routines. |
| 40 - application - set during initialization |
| 41 - libavcodec - unchanged |
| 42 */ |
| 43 int xvmc_id; |
| 44 |
| 45 /** Pointer to the block array allocated by XvMCCreateBlocks(). |
| 46 The array has to be freed by XvMCDestroyBlocks(). |
| 47 Each group of 64 values represents one data block of differential |
| 48 pixel information (in MoCo mode) or coefficients for IDCT. |
| 49 - application - set the pointer during initialization |
| 50 - libavcodec - fills coefficients/pixel data into the array |
| 51 */ |
| 52 short* data_blocks; |
| 53 |
| 54 /** Pointer to the macroblock description array allocated by |
| 55 XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks(). |
| 56 - application - set the pointer during initialization |
| 57 - libavcodec - fills description data into the array |
| 58 */ |
| 59 XvMCMacroBlock* mv_blocks; |
| 60 |
| 61 /** Number of macroblock descriptions that can be stored in the mv_blocks |
| 62 array. |
| 63 - application - set during initialization |
| 64 - libavcodec - unchanged |
| 65 */ |
| 66 int allocated_mv_blocks; |
| 67 |
| 68 /** Number of blocks that can be stored at once in the data_blocks array. |
| 69 - application - set during initialization |
| 70 - libavcodec - unchanged |
| 71 */ |
| 72 int allocated_data_blocks; |
| 73 |
| 74 /** Indicates that the hardware would interpret data_blocks as IDCT |
| 75 coefficients and perform IDCT on them. |
| 76 - application - set during initialization |
| 77 - libavcodec - unchanged |
| 78 */ |
| 79 int idct; |
| 80 |
| 81 /** In MoCo mode it indicates that intra macroblocks are assumed to be in |
| 82 unsigned format; same as the XVMC_INTRA_UNSIGNED flag. |
| 83 - application - set during initialization |
| 84 - libavcodec - unchanged |
| 85 */ |
| 86 int unsigned_intra; |
| 87 |
| 88 /** Pointer to the surface allocated by XvMCCreateSurface(). |
| 89 It has to be freed by XvMCDestroySurface() on application exit. |
| 90 It identifies the frame and its state on the video hardware. |
| 91 - application - set during initialization |
| 92 - libavcodec - unchanged |
| 93 */ |
| 94 XvMCSurface* p_surface; |
| 95 |
| 96 /** Set by the decoder before calling ff_draw_horiz_band(), |
| 97 needed by the XvMCRenderSurface function. */ |
| 98 //@{ |
| 99 /** Pointer to the surface used as past reference |
| 100 - application - unchanged |
| 101 - libavcodec - set |
| 102 */ |
| 103 XvMCSurface* p_past_surface; |
| 104 |
| 105 /** Pointer to the surface used as future reference |
| 106 - application - unchanged |
| 107 - libavcodec - set |
| 108 */ |
| 109 XvMCSurface* p_future_surface; |
| 110 |
| 111 /** top/bottom field or frame |
| 112 - application - unchanged |
| 113 - libavcodec - set |
| 114 */ |
| 115 unsigned int picture_structure; |
| 116 |
| 117 /** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence |
| 118 - application - unchanged |
| 119 - libavcodec - set |
| 120 */ |
| 121 unsigned int flags; |
| 122 //}@ |
| 123 |
| 124 /** Number of macroblock descriptions in the mv_blocks array |
| 125 that have already been passed to the hardware. |
| 126 - application - zeroes it on get_buffer(). |
| 127 A successful ff_draw_horiz_band() may increment it |
| 128 with filled_mb_block_num or zero both. |
| 129 - libavcodec - unchanged |
| 130 */ |
| 131 int start_mv_blocks_num; |
| 132 |
| 133 /** Number of new macroblock descriptions in the mv_blocks array (after |
| 134 start_mv_blocks_num) that are filled by libavcodec and have to be |
| 135 passed to the hardware. |
| 136 - application - zeroes it on get_buffer() or after successful |
| 137 ff_draw_horiz_band(). |
| 138 - libavcodec - increment with one of each stored MB |
| 139 */ |
| 140 int filled_mv_blocks_num; |
| 141 |
| 142 /** Number of the the next free data block; one data block consists of |
| 143 64 short values in the data_blocks array. |
| 144 All blocks before this one have already been claimed by placing their |
| 145 position into the corresponding block description structure field, |
| 146 that are part of the mv_blocks array. |
| 147 - application - zeroes it on get_buffer(). |
| 148 A successful ff_draw_horiz_band() may zero it together |
| 149 with start_mb_blocks_num. |
| 150 - libavcodec - each decoded macroblock increases it by the number |
| 151 of coded blocks it contains. |
| 152 */ |
| 153 int next_free_data_block_num; |
| 154 |
| 155 /** extensions may be placed here */ |
| 156 #if LIBAVCODEC_VERSION_MAJOR < 53 |
| 157 //@{ |
| 158 /** State flags used to work around limitations in the MPlayer video system. |
| 159 0 - Surface is not used. |
| 160 1 - Surface is still held in application to be displayed or is |
| 161 still visible. |
| 162 2 - Surface is still held in libavcodec buffer for prediction. |
| 163 */ |
| 164 int state; |
| 165 |
| 166 /** pointer to the surface where the subpicture is rendered */ |
| 167 void* p_osd_target_surface_render; |
| 168 //}@ |
| 169 #endif |
| 170 }; |
| 171 |
| 172 #endif /* AVCODEC_XVMC_H */ |
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Chromium Code Reviews
Issue 56129:
Update public FFmpeg header files from r16647 to r18286. (Closed)
