blob: 3732f179f4618996540438fe0d56631e26e9ed8d
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 |