1 /* 2 * thirdpel DSP functions 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 /** 22 * @file 23 * thirdpel DSP functions 24 */ 25 26 #ifndef AVCODEC_TPELDSP_H 27 #define AVCODEC_TPELDSP_H 28 29 #include <stdint.h> 30 31 /* add and put pixel (decoding) */ 32 // blocksizes for hpel_pixels_func are 8x4,8x8 16x8 16x16 33 // h for hpel_pixels_func is limited to {width/2, width} but never larger 34 // than 16 and never smaller than 4 35 typedef void (*tpel_mc_func)(uint8_t *block /* align width (8 or 16) */, 36 const uint8_t *pixels /* align 1 */, 37 int line_size, int w, int h); 38 39 /** 40 * thirdpel DSP context 41 */ 42 typedef struct TpelDSPContext { 43 /** 44 * Thirdpel motion compensation with rounding (a + b + 1) >> 1. 45 * this is an array[12] of motion compensation functions for the 46 * 9 thirdpel positions<br> 47 * *pixels_tab[xthirdpel + 4 * ythirdpel] 48 * @param block destination where the result is stored 49 * @param pixels source 50 * @param line_size number of bytes in a horizontal line of block 51 * @param h height 52 */ 53 tpel_mc_func put_tpel_pixels_tab[11]; // FIXME individual func ptr per width? 54 tpel_mc_func avg_tpel_pixels_tab[11]; // FIXME individual func ptr per width? 55 } TpelDSPContext; 56 57 void ff_tpeldsp_init(TpelDSPContext *c); 58 59 #endif /* AVCODEC_TPELDSP_H */ 60