424 lines
15 KiB
C
424 lines
15 KiB
C
/*
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* BobWeaver Deinterlacing Filter
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* Copyright (C) 2016 Thomas Mundt <loudmax@yahoo.de>
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*
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* Based on YADIF (Yet Another Deinterlacing Filter)
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* Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
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* 2010 James Darnley <james.darnley@gmail.com>
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*
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* With use of Weston 3 Field Deinterlacing Filter algorithm
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* Copyright (C) 2012 British Broadcasting Corporation, All Rights Reserved
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* Author of de-interlace algorithm: Jim Easterbrook for BBC R&D
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* Based on the process described by Martin Weston for BBC R&D
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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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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/imgutils.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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#include "bwdif.h"
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/*
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* Filter coefficients coef_lf and coef_hf taken from BBC PH-2071 (Weston 3 Field Deinterlacer).
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* Used when there is spatial and temporal interpolation.
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* Filter coefficients coef_sp are used when there is spatial interpolation only.
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* Adjusted for matching visual sharpness impression of spatial and temporal interpolation.
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*/
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static const uint16_t coef_lf[2] = { 4309, 213 };
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static const uint16_t coef_hf[3] = { 5570, 3801, 1016 };
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static const uint16_t coef_sp[2] = { 5077, 981 };
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typedef struct ThreadData {
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AVFrame *frame;
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int plane;
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int w, h;
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int parity;
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int tff;
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} ThreadData;
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#define FILTER_INTRA() \
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for (x = 0; x < w; x++) { \
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interpol = (coef_sp[0] * (cur[mrefs] + cur[prefs]) - coef_sp[1] * (cur[mrefs3] + cur[prefs3])) >> 13; \
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dst[0] = av_clip(interpol, 0, clip_max); \
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\
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dst++; \
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cur++; \
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}
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#define FILTER1() \
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for (x = 0; x < w; x++) { \
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int c = cur[mrefs]; \
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int d = (prev2[0] + next2[0]) >> 1; \
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int e = cur[prefs]; \
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int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
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int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e)) >> 1; \
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int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e)) >> 1; \
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int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
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\
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if (!diff) { \
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dst[0] = d; \
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} else {
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#define SPAT_CHECK() \
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int b = ((prev2[mrefs2] + next2[mrefs2]) >> 1) - c; \
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int f = ((prev2[prefs2] + next2[prefs2]) >> 1) - e; \
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int dc = d - c; \
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int de = d - e; \
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int max = FFMAX3(de, dc, FFMIN(b, f)); \
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int min = FFMIN3(de, dc, FFMAX(b, f)); \
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diff = FFMAX3(diff, min, -max);
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#define FILTER_LINE() \
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SPAT_CHECK() \
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if (FFABS(c - e) > temporal_diff0) { \
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interpol = (((coef_hf[0] * (prev2[0] + next2[0]) \
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- coef_hf[1] * (prev2[mrefs2] + next2[mrefs2] + prev2[prefs2] + next2[prefs2]) \
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+ coef_hf[2] * (prev2[mrefs4] + next2[mrefs4] + prev2[prefs4] + next2[prefs4])) >> 2) \
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+ coef_lf[0] * (c + e) - coef_lf[1] * (cur[mrefs3] + cur[prefs3])) >> 13; \
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} else { \
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interpol = (coef_sp[0] * (c + e) - coef_sp[1] * (cur[mrefs3] + cur[prefs3])) >> 13; \
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}
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#define FILTER_EDGE() \
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if (spat) { \
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SPAT_CHECK() \
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} \
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interpol = (c + e) >> 1;
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#define FILTER2() \
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if (interpol > d + diff) \
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interpol = d + diff; \
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else if (interpol < d - diff) \
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interpol = d - diff; \
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\
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dst[0] = av_clip(interpol, 0, clip_max); \
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} \
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\
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dst++; \
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cur++; \
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prev++; \
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next++; \
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prev2++; \
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next2++; \
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}
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static void filter_intra(void *dst1, void *cur1, int w, int prefs, int mrefs,
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int prefs3, int mrefs3, int parity, int clip_max)
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{
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uint8_t *dst = dst1;
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uint8_t *cur = cur1;
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int interpol, x;
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FILTER_INTRA()
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}
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static void filter_line_c(void *dst1, void *prev1, void *cur1, void *next1,
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int w, int prefs, int mrefs, int prefs2, int mrefs2,
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int prefs3, int mrefs3, int prefs4, int mrefs4,
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int parity, int clip_max)
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{
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uint8_t *dst = dst1;
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uint8_t *prev = prev1;
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uint8_t *cur = cur1;
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uint8_t *next = next1;
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uint8_t *prev2 = parity ? prev : cur ;
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uint8_t *next2 = parity ? cur : next;
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int interpol, x;
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FILTER1()
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FILTER_LINE()
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FILTER2()
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}
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static void filter_edge(void *dst1, void *prev1, void *cur1, void *next1,
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int w, int prefs, int mrefs, int prefs2, int mrefs2,
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int parity, int clip_max, int spat)
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{
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uint8_t *dst = dst1;
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uint8_t *prev = prev1;
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uint8_t *cur = cur1;
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uint8_t *next = next1;
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uint8_t *prev2 = parity ? prev : cur ;
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uint8_t *next2 = parity ? cur : next;
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int interpol, x;
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FILTER1()
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FILTER_EDGE()
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FILTER2()
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}
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static void filter_intra_16bit(void *dst1, void *cur1, int w, int prefs, int mrefs,
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int prefs3, int mrefs3, int parity, int clip_max)
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{
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uint16_t *dst = dst1;
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uint16_t *cur = cur1;
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int interpol, x;
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FILTER_INTRA()
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}
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static void filter_line_c_16bit(void *dst1, void *prev1, void *cur1, void *next1,
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int w, int prefs, int mrefs, int prefs2, int mrefs2,
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int prefs3, int mrefs3, int prefs4, int mrefs4,
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int parity, int clip_max)
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{
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uint16_t *dst = dst1;
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uint16_t *prev = prev1;
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uint16_t *cur = cur1;
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uint16_t *next = next1;
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uint16_t *prev2 = parity ? prev : cur ;
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uint16_t *next2 = parity ? cur : next;
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int interpol, x;
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FILTER1()
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FILTER_LINE()
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FILTER2()
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}
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static void filter_edge_16bit(void *dst1, void *prev1, void *cur1, void *next1,
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int w, int prefs, int mrefs, int prefs2, int mrefs2,
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int parity, int clip_max, int spat)
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{
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uint16_t *dst = dst1;
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uint16_t *prev = prev1;
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uint16_t *cur = cur1;
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uint16_t *next = next1;
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uint16_t *prev2 = parity ? prev : cur ;
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uint16_t *next2 = parity ? cur : next;
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int interpol, x;
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FILTER1()
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FILTER_EDGE()
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FILTER2()
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}
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static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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BWDIFContext *s = ctx->priv;
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YADIFContext *yadif = &s->yadif;
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ThreadData *td = arg;
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int linesize = yadif->cur->linesize[td->plane];
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int clip_max = (1 << (yadif->csp->comp[td->plane].depth)) - 1;
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int df = (yadif->csp->comp[td->plane].depth + 7) / 8;
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int refs = linesize / df;
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int slice_start = (td->h * jobnr ) / nb_jobs;
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int slice_end = (td->h * (jobnr+1)) / nb_jobs;
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int y;
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for (y = slice_start; y < slice_end; y++) {
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if ((y ^ td->parity) & 1) {
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uint8_t *prev = &yadif->prev->data[td->plane][y * linesize];
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uint8_t *cur = &yadif->cur ->data[td->plane][y * linesize];
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uint8_t *next = &yadif->next->data[td->plane][y * linesize];
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uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
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if (yadif->current_field == YADIF_FIELD_END) {
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s->filter_intra(dst, cur, td->w, (y + df) < td->h ? refs : -refs,
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y > (df - 1) ? -refs : refs,
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(y + 3*df) < td->h ? 3 * refs : -refs,
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y > (3*df - 1) ? -3 * refs : refs,
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td->parity ^ td->tff, clip_max);
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} else if ((y < 4) || ((y + 5) > td->h)) {
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s->filter_edge(dst, prev, cur, next, td->w,
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(y + df) < td->h ? refs : -refs,
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y > (df - 1) ? -refs : refs,
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refs << 1, -(refs << 1),
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td->parity ^ td->tff, clip_max,
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(y < 2) || ((y + 3) > td->h) ? 0 : 1);
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} else {
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s->filter_line(dst, prev, cur, next, td->w,
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refs, -refs, refs << 1, -(refs << 1),
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3 * refs, -3 * refs, refs << 2, -(refs << 2),
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td->parity ^ td->tff, clip_max);
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}
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} else {
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memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
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&yadif->cur->data[td->plane][y * linesize], td->w * df);
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}
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}
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return 0;
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}
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static void filter(AVFilterContext *ctx, AVFrame *dstpic,
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int parity, int tff)
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{
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BWDIFContext *bwdif = ctx->priv;
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YADIFContext *yadif = &bwdif->yadif;
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ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
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int i;
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for (i = 0; i < yadif->csp->nb_components; i++) {
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int w = dstpic->width;
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int h = dstpic->height;
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if (i == 1 || i == 2) {
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w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
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h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
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}
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td.w = w;
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td.h = h;
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td.plane = i;
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ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(h, ff_filter_get_nb_threads(ctx)));
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}
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if (yadif->current_field == YADIF_FIELD_END) {
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yadif->current_field = YADIF_FIELD_NORMAL;
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}
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emms_c();
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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BWDIFContext *bwdif = ctx->priv;
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YADIFContext *yadif = &bwdif->yadif;
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av_frame_free(&yadif->prev);
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av_frame_free(&yadif->cur );
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av_frame_free(&yadif->next);
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
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AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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}
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static int config_props(AVFilterLink *link)
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{
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AVFilterContext *ctx = link->src;
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BWDIFContext *s = link->src->priv;
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YADIFContext *yadif = &s->yadif;
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link->time_base.num = link->src->inputs[0]->time_base.num;
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link->time_base.den = link->src->inputs[0]->time_base.den * 2;
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link->w = link->src->inputs[0]->w;
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link->h = link->src->inputs[0]->h;
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if(yadif->mode&1)
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link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1});
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if (link->w < 3 || link->h < 4) {
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av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or 4 lines is not supported\n");
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return AVERROR(EINVAL);
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}
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yadif->csp = av_pix_fmt_desc_get(link->format);
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yadif->filter = filter;
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if (yadif->csp->comp[0].depth > 8) {
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s->filter_intra = filter_intra_16bit;
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s->filter_line = filter_line_c_16bit;
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s->filter_edge = filter_edge_16bit;
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} else {
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s->filter_intra = filter_intra;
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s->filter_line = filter_line_c;
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s->filter_edge = filter_edge;
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}
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if (ARCH_X86)
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ff_bwdif_init_x86(s);
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return 0;
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}
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#define OFFSET(x) offsetof(YADIFContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
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#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
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static const AVOption bwdif_options[] = {
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{ "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FIELD}, 0, 1, FLAGS, "mode"},
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CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
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CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
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{ "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
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CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
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CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
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CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
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{ "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
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CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
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CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(bwdif);
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static const AVFilterPad avfilter_vf_bwdif_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = ff_yadif_filter_frame,
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},
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{ NULL }
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};
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static const AVFilterPad avfilter_vf_bwdif_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.request_frame = ff_yadif_request_frame,
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.config_props = config_props,
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},
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{ NULL }
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};
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AVFilter ff_vf_bwdif = {
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.name = "bwdif",
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.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
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.priv_size = sizeof(BWDIFContext),
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.priv_class = &bwdif_class,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.inputs = avfilter_vf_bwdif_inputs,
|
|
.outputs = avfilter_vf_bwdif_outputs,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
|
|
};
|