/src/ffmpeg/libavcodec/vc1_pred.h
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1 | | /* |
2 | | * VC-1 and WMV3 decoder |
3 | | * Copyright (c) 2006-2007 Konstantin Shishkov |
4 | | * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer |
5 | | * |
6 | | * This file is part of FFmpeg. |
7 | | * |
8 | | * FFmpeg is free software; you can redistribute it and/or |
9 | | * modify it under the terms of the GNU Lesser General Public |
10 | | * License as published by the Free Software Foundation; either |
11 | | * version 2.1 of the License, or (at your option) any later version. |
12 | | * |
13 | | * FFmpeg is distributed in the hope that it will be useful, |
14 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | | * Lesser General Public License for more details. |
17 | | * |
18 | | * You should have received a copy of the GNU Lesser General Public |
19 | | * License along with FFmpeg; if not, write to the Free Software |
20 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
21 | | */ |
22 | | |
23 | | #ifndef AVCODEC_VC1_PRED_H |
24 | | #define AVCODEC_VC1_PRED_H |
25 | | |
26 | | #include "vc1.h" |
27 | | #include "vc1data.h" |
28 | | |
29 | | void ff_vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y, |
30 | | int mv1, int r_x, int r_y, uint8_t* is_intra, |
31 | | int pred_flag, int dir); |
32 | | void ff_vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y, |
33 | | int mvn, int r_x, int r_y, int dir); |
34 | | void ff_vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], |
35 | | int direct, int mvtype); |
36 | | void ff_vc1_pred_b_mv_intfi(VC1Context *v, int n, int *dmv_x, int *dmv_y, |
37 | | int mv1, int *pred_flag); |
38 | | |
39 | | static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs) |
40 | 52.2M | { |
41 | 52.2M | int n = bfrac; |
42 | | |
43 | 52.2M | #if B_FRACTION_DEN==256 |
44 | 52.2M | if (inv) |
45 | 26.1M | n -= 256; |
46 | 52.2M | if (!qs) |
47 | 16.9M | return 2 * ((value * n + 255) >> 9); |
48 | 35.2M | return (value * n + 128) >> 8; |
49 | | #else |
50 | | if (inv) |
51 | | n -= B_FRACTION_DEN; |
52 | | if (!qs) |
53 | | return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN)); |
54 | | return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN; |
55 | | #endif |
56 | 52.2M | } Line | Count | Source | 40 | 17.6M | { | 41 | 17.6M | int n = bfrac; | 42 | | | 43 | 17.6M | #if B_FRACTION_DEN==256 | 44 | 17.6M | if (inv) | 45 | 8.80M | n -= 256; | 46 | 17.6M | if (!qs) | 47 | 0 | return 2 * ((value * n + 255) >> 9); | 48 | 17.6M | return (value * n + 128) >> 8; | 49 | | #else | 50 | | if (inv) | 51 | | n -= B_FRACTION_DEN; | 52 | | if (!qs) | 53 | | return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN)); | 54 | | return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN; | 55 | | #endif | 56 | 17.6M | } |
Line | Count | Source | 40 | 34.6M | { | 41 | 34.6M | int n = bfrac; | 42 | | | 43 | 34.6M | #if B_FRACTION_DEN==256 | 44 | 34.6M | if (inv) | 45 | 17.3M | n -= 256; | 46 | 34.6M | if (!qs) | 47 | 16.9M | return 2 * ((value * n + 255) >> 9); | 48 | 17.6M | return (value * n + 128) >> 8; | 49 | | #else | 50 | | if (inv) | 51 | | n -= B_FRACTION_DEN; | 52 | | if (!qs) | 53 | | return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN)); | 54 | | return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN; | 55 | | #endif | 56 | 34.6M | } |
|
57 | | |
58 | | #endif /* AVCODEC_VC1_PRED_H */ |