mirror of https://github.com/FFmpeg/FFmpeg.git
The gradfun filter was already integrated natively in libavfilter. Both filters issue the same output, and have a comparable performance. See thread: Subject: [FFmpeg-devel] [PATCH] lavfi: remove gradfun mp wrapper Date: Fri, 5 Aug 2011 00:19:04 +0200pull/2/head
Stefano Sabatini
13 years ago
parent
6c4e9cae52
commit
640a905ece
5 changed files with 1 additions and 416 deletions
@ -1,411 +0,0 @@ |
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/*
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* Copyright (C) 2009 Loren Merritt <lorenm@u.washignton.edu> |
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* |
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* This file is part of MPlayer. |
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* |
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* MPlayer is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* MPlayer 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 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with MPlayer; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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/*
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* Debanding algorithm (from gradfun2db by prunedtree): |
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* Boxblur. |
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* Foreach pixel, if it's within threshold of the blurred value, make it closer. |
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* So now we have a smoothed and higher bitdepth version of all the shallow |
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* gradients, while leaving detailed areas untouched. |
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* Dither it back to 8bit. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include "config.h" |
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#include "cpudetect.h" |
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#include "img_format.h" |
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#include "mp_image.h" |
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#include "vf.h" |
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#include "libvo/fastmemcpy.h" |
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#include "libavutil/avutil.h" |
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#include "libavutil/x86_cpu.h" |
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struct vf_priv_s { |
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int thresh; |
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int radius; |
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uint16_t *buf; |
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void (*filter_line)(uint8_t *dst, uint8_t *src, uint16_t *dc, |
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int width, int thresh, const uint16_t *dithers); |
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void (*blur_line)(uint16_t *dc, uint16_t *buf, uint16_t *buf1, |
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uint8_t *src, int sstride, int width); |
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}; |
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static const uint16_t __attribute__((aligned(16))) pw_7f[8] = {127,127,127,127,127,127,127,127}; |
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static const uint16_t __attribute__((aligned(16))) pw_ff[8] = {255,255,255,255,255,255,255,255}; |
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static const uint16_t __attribute__((aligned(16))) dither[8][8] = { |
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{ 0, 96, 24,120, 6,102, 30,126 }, |
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{ 64, 32, 88, 56, 70, 38, 94, 62 }, |
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{ 16,112, 8,104, 22,118, 14,110 }, |
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{ 80, 48, 72, 40, 86, 54, 78, 46 }, |
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{ 4,100, 28,124, 2, 98, 26,122 }, |
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{ 68, 36, 92, 60, 66, 34, 90, 58 }, |
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{ 20,116, 12,108, 18,114, 10,106 }, |
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{ 84, 52, 76, 44, 82, 50, 74, 42 }, |
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}; |
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static void filter_line_c(uint8_t *dst, uint8_t *src, uint16_t *dc, |
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int width, int thresh, const uint16_t *dithers) |
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{ |
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int x; |
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for (x=0; x<width; x++, dc+=x&1) { |
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int pix = src[x]<<7; |
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int delta = dc[0] - pix; |
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int m = abs(delta) * thresh >> 16; |
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m = FFMAX(0, 127-m); |
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m = m*m*delta >> 14; |
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pix += m + dithers[x&7]; |
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dst[x] = av_clip_uint8(pix>>7); |
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} |
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} |
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static void blur_line_c(uint16_t *dc, uint16_t *buf, uint16_t *buf1, |
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uint8_t *src, int sstride, int width) |
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{ |
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int x, v, old; |
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for (x=0; x<width; x++) { |
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v = buf1[x] + src[2*x] + src[2*x+1] + src[2*x+sstride] + src[2*x+1+sstride]; |
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old = buf[x]; |
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buf[x] = v; |
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dc[x] = v - old; |
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} |
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} |
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#if HAVE_MMX2 |
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static void filter_line_mmx2(uint8_t *dst, uint8_t *src, uint16_t *dc, |
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int width, int thresh, const uint16_t *dithers) |
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{ |
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intptr_t x; |
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if (width&3) { |
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x = width&~3; |
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filter_line_c(dst+x, src+x, dc+x/2, width-x, thresh, dithers); |
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width = x; |
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} |
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x = -width; |
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__asm__ volatile( |
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"movd %4, %%mm5 \n" |
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"pxor %%mm7, %%mm7 \n" |
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"pshufw $0, %%mm5, %%mm5 \n" |
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"movq %6, %%mm6 \n" |
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"movq %5, %%mm4 \n" |
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"1: \n" |
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"movd (%2,%0), %%mm0 \n" |
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"movd (%3,%0), %%mm1 \n" |
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"punpcklbw %%mm7, %%mm0 \n" |
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"punpcklwd %%mm1, %%mm1 \n" |
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"psllw $7, %%mm0 \n" |
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"pxor %%mm2, %%mm2 \n" |
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"psubw %%mm0, %%mm1 \n" // delta = dc - pix
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"psubw %%mm1, %%mm2 \n" |
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"pmaxsw %%mm1, %%mm2 \n" |
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"pmulhuw %%mm5, %%mm2 \n" // m = abs(delta) * thresh >> 16
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"psubw %%mm6, %%mm2 \n" |
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"pminsw %%mm7, %%mm2 \n" // m = -max(0, 127-m)
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"pmullw %%mm2, %%mm2 \n" |
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"paddw %%mm4, %%mm0 \n" // pix += dither
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"pmulhw %%mm2, %%mm1 \n" |
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"psllw $2, %%mm1 \n" // m = m*m*delta >> 14
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"paddw %%mm1, %%mm0 \n" // pix += m
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"psraw $7, %%mm0 \n" |
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"packuswb %%mm0, %%mm0 \n" |
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"movd %%mm0, (%1,%0) \n" // dst = clip(pix>>7)
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"add $4, %0 \n" |
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"jl 1b \n" |
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"emms \n" |
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:"+r"(x) |
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:"r"(dst+width), "r"(src+width), "r"(dc+width/2), |
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"rm"(thresh), "m"(*dithers), "m"(*pw_7f) |
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:"memory" |
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); |
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} |
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#endif |
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#if HAVE_SSSE3 |
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static void filter_line_ssse3(uint8_t *dst, uint8_t *src, uint16_t *dc, |
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int width, int thresh, const uint16_t *dithers) |
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{ |
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intptr_t x; |
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if (width&7) { |
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// could be 10% faster if I somehow eliminated this
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x = width&~7; |
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filter_line_c(dst+x, src+x, dc+x/2, width-x, thresh, dithers); |
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width = x; |
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} |
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x = -width; |
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__asm__ volatile( |
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"movd %4, %%xmm5 \n" |
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"pxor %%xmm7, %%xmm7 \n" |
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"pshuflw $0,%%xmm5, %%xmm5 \n" |
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"movdqa %6, %%xmm6 \n" |
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"punpcklqdq %%xmm5, %%xmm5 \n" |
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"movdqa %5, %%xmm4 \n" |
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"1: \n" |
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"movq (%2,%0), %%xmm0 \n" |
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"movq (%3,%0), %%xmm1 \n" |
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"punpcklbw %%xmm7, %%xmm0 \n" |
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"punpcklwd %%xmm1, %%xmm1 \n" |
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"psllw $7, %%xmm0 \n" |
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"psubw %%xmm0, %%xmm1 \n" // delta = dc - pix
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"pabsw %%xmm1, %%xmm2 \n" |
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"pmulhuw %%xmm5, %%xmm2 \n" // m = abs(delta) * thresh >> 16
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"psubw %%xmm6, %%xmm2 \n" |
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"pminsw %%xmm7, %%xmm2 \n" // m = -max(0, 127-m)
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"pmullw %%xmm2, %%xmm2 \n" |
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"psllw $1, %%xmm2 \n" |
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"paddw %%xmm4, %%xmm0 \n" // pix += dither
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"pmulhrsw %%xmm2, %%xmm1 \n" // m = m*m*delta >> 14
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"paddw %%xmm1, %%xmm0 \n" // pix += m
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"psraw $7, %%xmm0 \n" |
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"packuswb %%xmm0, %%xmm0 \n" |
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"movq %%xmm0, (%1,%0) \n" // dst = clip(pix>>7)
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"add $8, %0 \n" |
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"jl 1b \n" |
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:"+&r"(x) |
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:"r"(dst+width), "r"(src+width), "r"(dc+width/2), |
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"rm"(thresh), "m"(*dithers), "m"(*pw_7f) |
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:"memory" |
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); |
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} |
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#endif // HAVE_SSSE3
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#if HAVE_SSE && HAVE_6REGS |
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#define BLURV(load)\ |
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intptr_t x = -2*width;\
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__asm__ volatile(\
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"movdqa %6, %%xmm7 \n"\
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"1: \n"\
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load" (%4,%0), %%xmm0 \n"\
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load" (%5,%0), %%xmm1 \n"\
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"movdqa %%xmm0, %%xmm2 \n"\
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"movdqa %%xmm1, %%xmm3 \n"\
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"psrlw $8, %%xmm0 \n"\
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"psrlw $8, %%xmm1 \n"\
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"pand %%xmm7, %%xmm2 \n"\
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"pand %%xmm7, %%xmm3 \n"\
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"paddw %%xmm1, %%xmm0 \n"\
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"paddw %%xmm3, %%xmm2 \n"\
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"paddw %%xmm2, %%xmm0 \n"\
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"paddw (%2,%0), %%xmm0 \n"\
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"movdqa (%1,%0), %%xmm1 \n"\
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"movdqa %%xmm0, (%1,%0) \n"\
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"psubw %%xmm1, %%xmm0 \n"\
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"movdqa %%xmm0, (%3,%0) \n"\
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"add $16, %0 \n"\
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"jl 1b \n"\
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:"+&r"(x)\
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:"r"(buf+width),\
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"r"(buf1+width),\
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"r"(dc+width),\
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"r"(src+width*2),\
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"r"(src+width*2+sstride),\
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"m"(*pw_ff)\
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:"memory"\
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); |
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static void blur_line_sse2(uint16_t *dc, uint16_t *buf, uint16_t *buf1, |
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uint8_t *src, int sstride, int width) |
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{ |
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if (((intptr_t)src|sstride)&15) { |
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BLURV("movdqu"); |
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} else { |
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BLURV("movdqa"); |
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} |
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} |
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#endif // HAVE_6REGS && HAVE_SSE
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static void filter(struct vf_priv_s *ctx, uint8_t *dst, uint8_t *src, |
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int width, int height, int dstride, int sstride, int r) |
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{ |
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int bstride = ((width+15)&~15)/2; |
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int y; |
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uint32_t dc_factor = (1<<21)/(r*r); |
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uint16_t *dc = ctx->buf+16; |
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uint16_t *buf = ctx->buf+bstride+32; |
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int thresh = ctx->thresh; |
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memset(dc, 0, (bstride+16)*sizeof(*buf)); |
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for (y=0; y<r; y++) |
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ctx->blur_line(dc, buf+y*bstride, buf+(y-1)*bstride, src+2*y*sstride, sstride, width/2); |
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for (;;) { |
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if (y < height-r) { |
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int mod = ((y+r)/2)%r; |
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uint16_t *buf0 = buf+mod*bstride; |
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uint16_t *buf1 = buf+(mod?mod-1:r-1)*bstride; |
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int x, v; |
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ctx->blur_line(dc, buf0, buf1, src+(y+r)*sstride, sstride, width/2); |
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for (x=v=0; x<r; x++) |
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v += dc[x]; |
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for (; x<width/2; x++) { |
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v += dc[x] - dc[x-r]; |
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dc[x-r] = v * dc_factor >> 16; |
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} |
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for (; x<(width+r+1)/2; x++) |
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dc[x-r] = v * dc_factor >> 16; |
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for (x=-r/2; x<0; x++) |
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dc[x] = dc[0]; |
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} |
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if (y == r) { |
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for (y=0; y<r; y++) |
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ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]); |
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} |
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ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]); |
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if (++y >= height) break; |
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ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]); |
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if (++y >= height) break; |
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} |
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} |
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static void get_image(struct vf_instance *vf, mp_image_t *mpi) |
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{ |
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if (mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
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// ok, we can do pp in-place:
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vf->dmpi = vf_get_image(vf->next, mpi->imgfmt, |
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mpi->type, mpi->flags, mpi->width, mpi->height); |
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mpi->planes[0] = vf->dmpi->planes[0]; |
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mpi->stride[0] = vf->dmpi->stride[0]; |
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mpi->width = vf->dmpi->width; |
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if (mpi->flags&MP_IMGFLAG_PLANAR){ |
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mpi->planes[1] = vf->dmpi->planes[1]; |
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mpi->planes[2] = vf->dmpi->planes[2]; |
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mpi->stride[1] = vf->dmpi->stride[1]; |
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mpi->stride[2] = vf->dmpi->stride[2]; |
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} |
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mpi->flags |= MP_IMGFLAG_DIRECT; |
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} |
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static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts) |
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{ |
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mp_image_t *dmpi = vf->dmpi; |
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int p; |
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if (!(mpi->flags&MP_IMGFLAG_DIRECT)) { |
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// no DR, so get a new image. hope we'll get DR buffer:
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dmpi = vf_get_image(vf->next,mpi->imgfmt, MP_IMGTYPE_TEMP, |
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MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE, |
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mpi->w, mpi->h); |
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} |
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vf_clone_mpi_attributes(dmpi, mpi); |
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for (p=0; p<mpi->num_planes; p++) { |
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int w = mpi->w; |
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int h = mpi->h; |
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int r = vf->priv->radius; |
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if (p) { |
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w >>= mpi->chroma_x_shift; |
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h >>= mpi->chroma_y_shift; |
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r = ((r>>mpi->chroma_x_shift) + (r>>mpi->chroma_y_shift)) / 2; |
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r = av_clip((r+1)&~1,4,32); |
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} |
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if (FFMIN(w,h) > 2*r) |
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filter(vf->priv, dmpi->planes[p], mpi->planes[p], w, h, |
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dmpi->stride[p], mpi->stride[p], r); |
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else if (dmpi->planes[p] != mpi->planes[p]) |
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memcpy_pic(dmpi->planes[p], mpi->planes[p], w, h, |
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dmpi->stride[p], mpi->stride[p]); |
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} |
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return vf_next_put_image(vf, dmpi, pts); |
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} |
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static int query_format(struct vf_instance *vf, unsigned int fmt) |
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{ |
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switch (fmt){ |
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case IMGFMT_YVU9: |
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case IMGFMT_IF09: |
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case IMGFMT_YV12: |
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case IMGFMT_I420: |
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case IMGFMT_IYUV: |
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case IMGFMT_CLPL: |
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case IMGFMT_Y800: |
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case IMGFMT_Y8: |
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case IMGFMT_NV12: |
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case IMGFMT_NV21: |
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case IMGFMT_444P: |
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case IMGFMT_422P: |
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case IMGFMT_411P: |
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case IMGFMT_HM12: |
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return vf_next_query_format(vf,fmt); |
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} |
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return 0; |
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} |
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static int config(struct vf_instance *vf, |
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int width, int height, int d_width, int d_height, |
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unsigned int flags, unsigned int outfmt) |
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{ |
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free(vf->priv->buf); |
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vf->priv->buf = av_mallocz((((width+15)&~15)*(vf->priv->radius+1)/2+32)*sizeof(uint16_t)); |
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); |
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} |
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static void uninit(struct vf_instance *vf) |
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{ |
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if (!vf->priv) return; |
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av_free(vf->priv->buf); |
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free(vf->priv); |
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vf->priv = NULL; |
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} |
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static int vf_open(vf_instance_t *vf, char *args) |
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{ |
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float thresh = 1.2; |
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int radius = 16; |
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vf->get_image=get_image; |
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vf->put_image=put_image; |
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vf->query_format=query_format; |
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vf->config=config; |
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vf->uninit=uninit; |
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vf->priv=malloc(sizeof(struct vf_priv_s)); |
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memset(vf->priv, 0, sizeof(struct vf_priv_s)); |
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if (args) sscanf(args, "%f:%d", &thresh, &radius); |
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vf->priv->thresh = (1<<15)/av_clipf(thresh,0.51,255); |
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vf->priv->radius = av_clip((radius+1)&~1,4,32); |
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vf->priv->blur_line = blur_line_c; |
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vf->priv->filter_line = filter_line_c; |
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#if HAVE_SSE && HAVE_6REGS |
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if (gCpuCaps.hasSSE2) |
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vf->priv->blur_line = blur_line_sse2; |
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#endif |
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#if HAVE_MMX2 |
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if (gCpuCaps.hasMMX2) |
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vf->priv->filter_line = filter_line_mmx2; |
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#endif |
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#if HAVE_SSSE3 |
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if (gCpuCaps.hasSSSE3) |
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vf->priv->filter_line = filter_line_ssse3; |
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#endif |
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return 1; |
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} |
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const vf_info_t vf_info_gradfun = { |
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"gradient deband", |
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"gradfun", |
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"Loren Merritt", |
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"", |
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vf_open, |
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NULL |
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}; |
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