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6148 | serge | 1 | /* |
2 | * Copyright (C) 2006 Aurelien Jacobs |
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3 | * |
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4 | * This file is part of FFmpeg. |
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5 | * |
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6 | * FFmpeg is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Lesser General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2.1 of the License, or (at your option) any later version. |
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10 | * |
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11 | * FFmpeg is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Lesser General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Lesser General Public |
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17 | * License along with FFmpeg; if not, write to the Free Software |
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | */ |
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20 | |||
21 | /** |
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22 | * @file |
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23 | * VP6 DSP-oriented functions |
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24 | */ |
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25 | |||
26 | #include "libavutil/common.h" |
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27 | #include "vp56dsp.h" |
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28 | |||
29 | |||
30 | void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, int stride, |
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31 | const int16_t *h_weights, const int16_t *v_weights) |
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32 | { |
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33 | int x, y; |
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34 | int tmp[8*11]; |
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35 | int *t = tmp; |
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36 | |||
37 | src -= stride; |
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38 | |||
39 | for (y=0; y<11; y++) { |
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40 | for (x=0; x<8; x++) { |
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41 | t[x] = av_clip_uint8(( src[x-1] * h_weights[0] |
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42 | + src[x ] * h_weights[1] |
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43 | + src[x+1] * h_weights[2] |
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44 | + src[x+2] * h_weights[3] + 64) >> 7); |
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45 | } |
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46 | src += stride; |
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47 | t += 8; |
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48 | } |
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49 | |||
50 | t = tmp + 8; |
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51 | for (y=0; y<8; y++) { |
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52 | for (x=0; x<8; x++) { |
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53 | dst[x] = av_clip_uint8(( t[x-8 ] * v_weights[0] |
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54 | + t[x ] * v_weights[1] |
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55 | + t[x+8 ] * v_weights[2] |
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56 | + t[x+16] * v_weights[3] + 64) >> 7); |
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57 | } |
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58 | dst += stride; |
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59 | t += 8; |
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60 | } |
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61 | }8;>8;>8;>11;> |