2010-09-25 16:43:42 +00:00
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/*
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* Copyright (C) 2006-2010 Michael Niedermayer <michaelni@gmx.at>
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2011-04-05 01:12:46 +00:00
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* 2010 James Darnley <james.darnley@gmail.com>
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2010-09-25 16:43:42 +00:00
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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 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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* 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
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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 FFmpeg; 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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#include "libavutil/cpu.h"
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#include "libavutil/common.h"
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2011-04-05 00:45:10 +00:00
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#include "libavutil/pixdesc.h"
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2010-09-25 16:43:42 +00:00
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#include "avfilter.h"
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#include "yadif.h"
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#undef NDEBUG
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#include <assert.h>
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typedef struct {
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/**
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* 0: send 1 frame for each frame
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* 1: send 1 frame for each field
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* 2: like 0 but skips spatial interlacing check
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* 3: like 1 but skips spatial interlacing check
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*/
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int mode;
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/**
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* 0: bottom field first
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* 1: top field first
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* -1: auto-detection
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*/
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int parity;
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int frame_pending;
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AVFilterBufferRef *cur;
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AVFilterBufferRef *next;
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AVFilterBufferRef *prev;
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AVFilterBufferRef *out;
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void (*filter_line)(uint8_t *dst,
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uint8_t *prev, uint8_t *cur, uint8_t *next,
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2011-02-18 18:10:33 +00:00
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int w, int prefs, int mrefs, int parity, int mode);
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2011-04-05 00:45:10 +00:00
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const AVPixFmtDescriptor *csp;
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2010-09-25 16:43:42 +00:00
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} YADIFContext;
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#define CHECK(j)\
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2011-02-24 21:25:53 +00:00
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{ int score = FFABS(cur[mrefs-1+(j)] - cur[prefs-1-(j)])\
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+ FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
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+ FFABS(cur[mrefs+1+(j)] - cur[prefs+1-(j)]);\
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2010-09-25 16:43:42 +00:00
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if (score < spatial_score) {\
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spatial_score= score;\
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2011-02-24 21:25:53 +00:00
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spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
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2010-09-25 16:43:42 +00:00
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2011-04-05 01:11:05 +00:00
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#define FILTER \
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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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int spatial_pred = (c+e)>>1; \
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int spatial_score = FFABS(cur[mrefs-1] - cur[prefs-1]) + FFABS(c-e) \
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+ FFABS(cur[mrefs+1] - cur[prefs+1]) - 1; \
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\
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CHECK(-1) CHECK(-2) }} }} \
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CHECK( 1) CHECK( 2) }} }} \
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\
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if (mode < 2) { \
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int b = (prev2[2*mrefs] + next2[2*mrefs])>>1; \
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int f = (prev2[2*prefs] + next2[2*prefs])>>1; \
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int max = FFMAX3(d-e, d-c, FFMIN(b-c, f-e)); \
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int min = FFMIN3(d-e, d-c, FFMAX(b-c, f-e)); \
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\
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diff = FFMAX3(diff, min, -max); \
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} \
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\
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if (spatial_pred > d + diff) \
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spatial_pred = d + diff; \
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else if (spatial_pred < d - diff) \
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spatial_pred = d - diff; \
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\
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dst[0] = spatial_pred; \
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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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2010-09-25 16:43:42 +00:00
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2011-04-05 01:11:05 +00:00
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static void filter_line_c(uint8_t *dst,
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uint8_t *prev, uint8_t *cur, uint8_t *next,
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int w, int prefs, int mrefs, int parity, int mode)
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{
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int x;
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uint8_t *prev2 = parity ? prev : cur ;
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uint8_t *next2 = parity ? cur : next;
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2010-09-25 16:43:42 +00:00
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2011-04-05 01:11:05 +00:00
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FILTER
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2010-09-25 16:43:42 +00:00
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}
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2010-11-24 20:25:09 +00:00
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static void filter_line_c_16bit(uint16_t *dst,
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uint16_t *prev, uint16_t *cur, uint16_t *next,
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2011-04-05 01:02:52 +00:00
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int w, int prefs, int mrefs, int parity, int mode)
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2010-11-24 20:25:09 +00:00
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{
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int x;
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uint16_t *prev2 = parity ? prev : cur ;
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uint16_t *next2 = parity ? cur : next;
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2011-04-05 01:02:52 +00:00
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mrefs /= 2;
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prefs /= 2;
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2010-11-24 20:25:09 +00:00
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2011-04-05 01:11:05 +00:00
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FILTER
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2010-11-24 20:25:09 +00:00
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}
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2010-09-25 16:43:42 +00:00
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static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
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int parity, int tff)
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{
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YADIFContext *yadif = ctx->priv;
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int y, i;
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2011-04-05 00:45:10 +00:00
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for (i = 0; i < yadif->csp->nb_components; i++) {
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int w = dstpic->video->w;
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int h = dstpic->video->h;
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2010-09-25 16:43:42 +00:00
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int refs = yadif->cur->linesize[i];
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2010-11-24 20:25:09 +00:00
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int df = (yadif->csp->comp[i].depth_minus1+1) / 8;
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2010-09-25 16:43:42 +00:00
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2011-04-05 00:45:10 +00:00
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if (i) {
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/* Why is this not part of the per-plane description thing? */
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w >>= yadif->csp->log2_chroma_w;
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h >>= yadif->csp->log2_chroma_h;
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}
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2010-09-25 16:43:42 +00:00
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for (y = 0; y < h; y++) {
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if ((y ^ parity) & 1) {
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uint8_t *prev = &yadif->prev->data[i][y*refs];
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uint8_t *cur = &yadif->cur ->data[i][y*refs];
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uint8_t *next = &yadif->next->data[i][y*refs];
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uint8_t *dst = &dstpic->data[i][y*dstpic->linesize[i]];
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2011-02-18 18:10:33 +00:00
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int mode = y==1 || y+2==h ? 2 : yadif->mode;
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yadif->filter_line(dst, prev, cur, next, w, y+1<h ? refs : -refs, y ? -refs : refs, parity ^ tff, mode);
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2010-09-25 16:43:42 +00:00
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} else {
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memcpy(&dstpic->data[i][y*dstpic->linesize[i]],
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2010-11-24 20:25:09 +00:00
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&yadif->cur->data[i][y*refs], w*df);
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2010-09-25 16:43:42 +00:00
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}
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}
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}
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#if HAVE_MMX
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__asm__ volatile("emms \n\t" : : : "memory");
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#endif
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}
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static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms, int w, int h)
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{
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AVFilterBufferRef *picref;
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int width = FFALIGN(w, 32);
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2011-02-18 18:39:56 +00:00
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int height= FFALIGN(h+2, 32);
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2010-09-25 16:43:42 +00:00
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int i;
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picref = avfilter_default_get_video_buffer(link, perms, width, height);
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picref->video->w = w;
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picref->video->h = h;
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for (i = 0; i < 3; i++)
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2011-02-18 18:39:56 +00:00
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picref->data[i] += picref->linesize[i];
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2010-09-25 16:43:42 +00:00
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return picref;
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}
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2010-09-26 11:09:43 +00:00
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static void return_frame(AVFilterContext *ctx, int is_second)
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{
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2010-09-25 16:43:42 +00:00
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YADIFContext *yadif = ctx->priv;
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AVFilterLink *link= ctx->outputs[0];
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2011-01-15 00:32:36 +00:00
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int tff;
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if (yadif->parity == -1) {
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tff = yadif->cur->video->interlaced ?
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yadif->cur->video->top_field_first : 1;
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} else {
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tff = yadif->parity^1;
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}
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2010-09-25 16:43:42 +00:00
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2010-09-26 11:09:43 +00:00
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if (is_second)
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2010-09-25 16:43:42 +00:00
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yadif->out = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
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2010-09-26 11:09:43 +00:00
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AV_PERM_REUSE, link->w, link->h);
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2010-09-25 16:43:42 +00:00
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2011-04-05 00:45:10 +00:00
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if (!yadif->csp)
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yadif->csp = &av_pix_fmt_descriptors[link->format];
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2010-11-24 20:25:09 +00:00
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if (yadif->csp->comp[0].depth_minus1 == 15)
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yadif->filter_line = filter_line_c_16bit;
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2011-04-05 00:45:10 +00:00
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2010-09-25 16:43:42 +00:00
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filter(ctx, yadif->out, tff ^ !is_second, tff);
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2010-11-22 20:42:08 +00:00
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if (is_second) {
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if (yadif->next->pts != AV_NOPTS_VALUE &&
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yadif->cur->pts != AV_NOPTS_VALUE) {
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yadif->out->pts =
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(yadif->next->pts&yadif->cur->pts) +
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((yadif->next->pts^yadif->cur->pts)>>1);
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} else {
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yadif->out->pts = AV_NOPTS_VALUE;
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}
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2010-09-25 16:43:42 +00:00
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avfilter_start_frame(ctx->outputs[0], yadif->out);
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2010-11-22 20:42:08 +00:00
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}
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2010-09-25 16:43:42 +00:00
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avfilter_draw_slice(ctx->outputs[0], 0, link->h, 1);
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avfilter_end_frame(ctx->outputs[0]);
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2010-09-26 11:09:43 +00:00
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yadif->frame_pending = (yadif->mode&1) && !is_second;
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2010-09-25 16:43:42 +00:00
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}
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static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
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{
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AVFilterContext *ctx = link->dst;
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YADIFContext *yadif = ctx->priv;
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2010-09-26 11:09:43 +00:00
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if (yadif->frame_pending)
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2010-09-25 16:43:42 +00:00
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return_frame(ctx, 1);
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if (yadif->prev)
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avfilter_unref_buffer(yadif->prev);
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yadif->prev = yadif->cur;
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yadif->cur = yadif->next;
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yadif->next = picref;
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2010-09-26 11:09:43 +00:00
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if (!yadif->cur)
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2010-09-25 16:43:42 +00:00
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return;
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2010-09-26 00:56:26 +00:00
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if (!yadif->prev)
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yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
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2010-09-25 16:43:42 +00:00
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yadif->out = avfilter_get_video_buffer(ctx->outputs[0], AV_PERM_WRITE | AV_PERM_PRESERVE |
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AV_PERM_REUSE, link->w, link->h);
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2010-11-22 20:42:08 +00:00
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avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
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yadif->out->video->interlaced = 0;
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2010-09-25 16:43:42 +00:00
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avfilter_start_frame(ctx->outputs[0], yadif->out);
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}
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static void end_frame(AVFilterLink *link)
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{
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AVFilterContext *ctx = link->dst;
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YADIFContext *yadif = ctx->priv;
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2010-09-26 11:09:43 +00:00
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if (!yadif->out)
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2010-09-25 16:43:42 +00:00
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return;
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return_frame(ctx, 0);
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}
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static int request_frame(AVFilterLink *link)
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{
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AVFilterContext *ctx = link->src;
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YADIFContext *yadif = ctx->priv;
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2010-09-26 11:09:43 +00:00
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if (yadif->frame_pending) {
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2010-09-25 16:43:42 +00:00
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return_frame(ctx, 1);
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return 0;
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}
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2010-09-26 11:09:43 +00:00
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do {
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2010-09-25 16:43:42 +00:00
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int ret;
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if ((ret = avfilter_request_frame(link->src->inputs[0])))
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return ret;
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2010-09-26 11:09:43 +00:00
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} while (!yadif->cur);
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2010-09-25 16:43:42 +00:00
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return 0;
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}
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static int poll_frame(AVFilterLink *link)
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{
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YADIFContext *yadif = link->src->priv;
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int ret, val;
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2010-09-26 11:09:43 +00:00
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if (yadif->frame_pending)
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2010-09-25 16:43:42 +00:00
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return 1;
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2010-09-26 11:09:43 +00:00
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val = avfilter_poll_frame(link->src->inputs[0]);
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2010-09-25 16:43:42 +00:00
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2010-09-26 11:09:43 +00:00
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if (val==1 && !yadif->next) { //FIXME change API to not requre this red tape
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2010-09-25 16:43:42 +00:00
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if ((ret = avfilter_request_frame(link->src->inputs[0])) < 0)
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return ret;
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val = avfilter_poll_frame(link->src->inputs[0]);
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}
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2011-04-02 18:26:39 +00:00
|
|
|
assert(yadif->next || !val);
|
2010-09-25 16:43:42 +00:00
|
|
|
|
|
|
|
return val * ((yadif->mode&1)+1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
|
|
{
|
|
|
|
YADIFContext *yadif = ctx->priv;
|
|
|
|
|
|
|
|
if (yadif->prev) avfilter_unref_buffer(yadif->prev);
|
|
|
|
if (yadif->cur ) avfilter_unref_buffer(yadif->cur );
|
|
|
|
if (yadif->next) avfilter_unref_buffer(yadif->next);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
|
|
{
|
|
|
|
static const enum PixelFormat pix_fmts[] = {
|
|
|
|
PIX_FMT_YUV420P,
|
2011-04-05 00:45:10 +00:00
|
|
|
PIX_FMT_YUV422P,
|
|
|
|
PIX_FMT_YUV444P,
|
|
|
|
PIX_FMT_YUV410P,
|
|
|
|
PIX_FMT_YUV411P,
|
2010-09-25 16:43:42 +00:00
|
|
|
PIX_FMT_GRAY8,
|
2011-04-05 00:45:10 +00:00
|
|
|
PIX_FMT_YUVJ420P,
|
|
|
|
PIX_FMT_YUVJ422P,
|
|
|
|
PIX_FMT_YUVJ444P,
|
2010-11-24 20:25:09 +00:00
|
|
|
AV_NE( PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE ),
|
2011-04-05 00:45:10 +00:00
|
|
|
PIX_FMT_YUV440P,
|
|
|
|
PIX_FMT_YUVJ440P,
|
2010-11-24 20:25:09 +00:00
|
|
|
AV_NE( PIX_FMT_YUV420P16BE, PIX_FMT_YUV420P16LE ),
|
|
|
|
AV_NE( PIX_FMT_YUV422P16BE, PIX_FMT_YUV422P16LE ),
|
|
|
|
AV_NE( PIX_FMT_YUV444P16BE, PIX_FMT_YUV444P16LE ),
|
2010-09-25 16:43:42 +00:00
|
|
|
PIX_FMT_NONE
|
|
|
|
};
|
|
|
|
|
|
|
|
avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
|
|
|
|
{
|
|
|
|
YADIFContext *yadif = ctx->priv;
|
|
|
|
av_unused int cpu_flags = av_get_cpu_flags();
|
|
|
|
|
|
|
|
yadif->mode = 0;
|
|
|
|
yadif->parity = -1;
|
2011-04-05 00:45:10 +00:00
|
|
|
yadif->csp = NULL;
|
2010-09-25 16:43:42 +00:00
|
|
|
|
|
|
|
if (args) sscanf(args, "%d:%d", &yadif->mode, &yadif->parity);
|
|
|
|
|
|
|
|
yadif->filter_line = filter_line_c;
|
2010-12-04 05:23:44 +00:00
|
|
|
if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
|
|
|
|
yadif->filter_line = ff_yadif_filter_line_ssse3;
|
|
|
|
else if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
|
|
|
|
yadif->filter_line = ff_yadif_filter_line_sse2;
|
|
|
|
else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX)
|
2010-09-25 16:43:42 +00:00
|
|
|
yadif->filter_line = ff_yadif_filter_line_mmx;
|
|
|
|
|
|
|
|
av_log(ctx, AV_LOG_INFO, "mode:%d parity:%d\n", yadif->mode, yadif->parity);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
|
|
|
|
|
|
|
|
AVFilter avfilter_vf_yadif = {
|
|
|
|
.name = "yadif",
|
|
|
|
.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image"),
|
|
|
|
|
|
|
|
.priv_size = sizeof(YADIFContext),
|
|
|
|
.init = init,
|
|
|
|
.uninit = uninit,
|
|
|
|
.query_formats = query_formats,
|
|
|
|
|
|
|
|
.inputs = (AVFilterPad[]) {{ .name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.start_frame = start_frame,
|
|
|
|
.get_video_buffer = get_video_buffer,
|
|
|
|
.draw_slice = null_draw_slice,
|
|
|
|
.end_frame = end_frame, },
|
|
|
|
{ .name = NULL}},
|
|
|
|
|
|
|
|
.outputs = (AVFilterPad[]) {{ .name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.poll_frame = poll_frame,
|
|
|
|
.request_frame = request_frame, },
|
|
|
|
{ .name = NULL}},
|
|
|
|
};
|