FFmpeg
libavcodec
vp6dsp.c
Go to the documentation of this file.
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/*
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* Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* VP6 DSP-oriented functions
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*/
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#include "
libavutil/common.h
"
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#include "
vp56dsp.h
"
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void
ff_vp6_filter_diag4_c
(uint8_t *
dst
, uint8_t *
src
, ptrdiff_t
stride
,
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const
int16_t *h_weights,
const
int16_t *v_weights)
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{
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int
x, y;
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int
tmp
[8*11];
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int
*t =
tmp
;
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src
-=
stride
;
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for
(y=0; y<11; y++) {
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for
(x=0; x<8; x++) {
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t[x] =
av_clip_uint8
((
src
[x-1] * h_weights[0]
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+
src
[x ] * h_weights[1]
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+
src
[x+1] * h_weights[2]
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+
src
[x+2] * h_weights[3] + 64) >> 7);
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}
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src
+=
stride
;
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t += 8;
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}
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t =
tmp
+ 8;
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for
(y=0; y<8; y++) {
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for
(x=0; x<8; x++) {
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dst
[x] =
av_clip_uint8
(( t[x-8 ] * v_weights[0]
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+ t[x ] * v_weights[1]
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+ t[x+8 ] * v_weights[2]
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+ t[x+16] * v_weights[3] + 64) >> 7);
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}
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dst
+=
stride
;
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t += 8;
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}
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}
tmp
static uint8_t tmp[11]
Definition:
aes_ctr.c:28
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition:
dsp.h:83
vp56dsp.h
ff_vp6_filter_diag4_c
void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride, const int16_t *h_weights, const int16_t *v_weights)
Definition:
vp6dsp.c:30
common.h
stride
#define stride
Definition:
h264pred_template.c:537
av_clip_uint8
#define av_clip_uint8
Definition:
common.h:106
src
#define src
Definition:
vp8dsp.c:248
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