Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Copyright (C) 2006 Aurelien Jacobs |
||
| 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 | * VP6 DSP-oriented functions |
||
| 24 | */ |
||
| 25 | |||
| 26 | #include "libavutil/common.h" |
||
| 27 | #include "vp56dsp.h" |
||
| 28 | |||
| 29 | |||
| 30 | void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, int stride, |
||
| 31 | const int16_t *h_weights, const int16_t *v_weights) |
||
| 32 | { |
||
| 33 | int x, y; |
||
| 34 | int tmp[8*11]; |
||
| 35 | int *t = tmp; |
||
| 36 | |||
| 37 | src -= stride; |
||
| 38 | |||
| 39 | for (y=0; y<11; y++) { |
||
| 40 | for (x=0; x<8; x++) { |
||
| 41 | t[x] = av_clip_uint8(( src[x-1] * h_weights[0] |
||
| 42 | + src[x ] * h_weights[1] |
||
| 43 | + src[x+1] * h_weights[2] |
||
| 44 | + src[x+2] * h_weights[3] + 64) >> 7); |
||
| 45 | } |
||
| 46 | src += stride; |
||
| 47 | t += 8; |
||
| 48 | } |
||
| 49 | |||
| 50 | t = tmp + 8; |
||
| 51 | for (y=0; y<8; y++) { |
||
| 52 | for (x=0; x<8; x++) { |
||
| 53 | dst[x] = av_clip_uint8(( t[x-8 ] * v_weights[0] |
||
| 54 | + t[x ] * v_weights[1] |
||
| 55 | + t[x+8 ] * v_weights[2] |
||
| 56 | + t[x+16] * v_weights[3] + 64) >> 7); |
||
| 57 | } |
||
| 58 | dst += stride; |
||
| 59 | t += 8; |
||
| 60 | } |
||
| 61 | } |