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59 lines
2.0 KiB
59 lines
2.0 KiB
/* |
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* thirdpel DSP functions |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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/** |
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* @file |
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* thirdpel DSP functions |
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*/ |
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#ifndef AVCODEC_TPELDSP_H |
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#define AVCODEC_TPELDSP_H |
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#include <stdint.h> |
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/* add and put pixel (decoding) */ |
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// blocksizes for hpel_pixels_func are 8x4,8x8 16x8 16x16 |
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// h for hpel_pixels_func is limited to {width/2, width} but never larger |
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// than 16 and never smaller than 4 |
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typedef void (*tpel_mc_func)(uint8_t *block /* align width (8 or 16) */, |
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const uint8_t *pixels /* align 1 */, |
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int line_size, int w, int h); |
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/** |
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* thirdpel DSP context |
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*/ |
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typedef struct TpelDSPContext { |
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/** |
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* Thirdpel motion compensation with rounding (a + b + 1) >> 1. |
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* this is an array[12] of motion compensation functions for the |
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* 9 thirdpel positions<br> |
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* *pixels_tab[xthirdpel + 4 * ythirdpel] |
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* @param block destination where the result is stored |
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* @param pixels source |
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* @param line_size number of bytes in a horizontal line of block |
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* @param h height |
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*/ |
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tpel_mc_func put_tpel_pixels_tab[11]; // FIXME individual func ptr per width? |
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tpel_mc_func avg_tpel_pixels_tab[11]; // FIXME individual func ptr per width? |
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} TpelDSPContext; |
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void ff_tpeldsp_init(TpelDSPContext *c); |
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#endif /* AVCODEC_TPELDSP_H */
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