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author | XhmikosR <xhmikosr@users.sourceforge.net> | 2010-05-02 21:04:21 +0400 |
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committer | XhmikosR <xhmikosr@users.sourceforge.net> | 2010-05-02 21:04:21 +0400 |
commit | b909f331c4de7c8e826c76517652b1986781f29a (patch) | |
tree | f3bf98d4482a3c80898c814bdb227f03ba89818c /src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/vp56dsp.c | |
parent | 2adb832f6f28d4e6a608041d2ca972ae26f40ae6 (diff) |
updated ffmpeg
git-svn-id: https://mpc-hc.svn.sourceforge.net/svnroot/mpc-hc/trunk@1831 10f7b99b-c216-0410-bff0-8a66a9350fd8
Diffstat (limited to 'src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/vp56dsp.c')
-rw-r--r-- | src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/vp56dsp.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/vp56dsp.c b/src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/vp56dsp.c new file mode 100644 index 000000000..f9da3d78d --- /dev/null +++ b/src/filters/transform/MPCVideoDec/ffmpeg/libavcodec/vp56dsp.c @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org> + * Copyright (c) 2010 Mans Rullgard <mans@mansr.com> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include "avcodec.h" +#include "vp56dsp.h" + +/* Gives very similar result than the vp6 version except in a few cases */ +static int vp5_adjust(int v, int t) +{ + int s2, s1 = v >> 31; + v ^= s1; + v -= s1; + v *= v < 2*t; + v -= t; + s2 = v >> 31; + v ^= s2; + v -= s2; + v = t - v; + v += s1; + v ^= s1; + return v; +} + +static int vp6_adjust(int v, int t) +{ + int V = v, s = v >> 31; + V ^= s; + V -= s; + if (V-t-1 >= (unsigned)(t-1)) + return v; + V = 2*t - V; + V += s; + V ^= s; + return V; +} + + +#define VP56_EDGE_FILTER(pfx, suf, pix_inc, line_inc) \ +static void pfx##_edge_filter_##suf(uint8_t *yuv, int stride, int t) \ +{ \ + int pix2_inc = 2 * pix_inc; \ + int i, v; \ + \ + for (i=0; i<12; i++) { \ + v = (yuv[-pix2_inc] + 3*(yuv[0]-yuv[-pix_inc]) - yuv[pix_inc] + 4)>>3;\ + v = pfx##_adjust(v, t); \ + yuv[-pix_inc] = av_clip_uint8(yuv[-pix_inc] + v); \ + yuv[0] = av_clip_uint8(yuv[0] - v); \ + yuv += line_inc; \ + } \ +} + +VP56_EDGE_FILTER(vp5, hor, 1, stride) +VP56_EDGE_FILTER(vp5, ver, stride, 1) +VP56_EDGE_FILTER(vp6, hor, 1, stride) +VP56_EDGE_FILTER(vp6, ver, stride, 1) + +void ff_vp56dsp_init(VP56DSPContext *s, enum CodecID codec) +{ + if (codec == CODEC_ID_VP5) { + s->edge_filter_hor = vp5_edge_filter_hor; + s->edge_filter_ver = vp5_edge_filter_ver; + } else { + s->edge_filter_hor = vp6_edge_filter_hor; + s->edge_filter_ver = vp6_edge_filter_ver; + } +} |