434 lines
14 KiB
C
434 lines
14 KiB
C
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/*
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* Copyright (c) 2017 Paul B Mahol
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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/opt.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.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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typedef struct Points {
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uint16_t x, y;
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} Points;
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typedef struct FloodfillContext {
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const AVClass *class;
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int x, y;
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int s[4];
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int S[4];
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int d[4];
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int nb_planes;
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int back, front;
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Points *points;
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int (*is_same)(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3);
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void (*set_pixel)(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3);
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void (*pick_pixel)(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3);
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} FloodfillContext;
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static int is_inside(int x, int y, int w, int h)
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{
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if (x >= 0 && x < w && y >= 0 && y < h)
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return 1;
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return 0;
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}
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static int is_same4(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3)
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{
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unsigned c0 = frame->data[0][y * frame->linesize[0] + x];
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unsigned c1 = frame->data[1][y * frame->linesize[1] + x];
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unsigned c2 = frame->data[2][y * frame->linesize[2] + x];
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unsigned c3 = frame->data[3][y * frame->linesize[3] + x];
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if (s0 == c0 && s1 == c1 && s2 == c2 && s3 == c3)
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return 1;
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return 0;
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}
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static int is_same4_16(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3)
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{
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unsigned c0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
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unsigned c1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
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unsigned c2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
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unsigned c3 = AV_RN16(frame->data[3] + y * frame->linesize[3] + 2 * x);
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if (s0 == c0 && s1 == c1 && s2 == c2 && s3 == c3)
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return 1;
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return 0;
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}
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static int is_same3(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3)
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{
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unsigned c0 = frame->data[0][y * frame->linesize[0] + x];
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unsigned c1 = frame->data[1][y * frame->linesize[1] + x];
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unsigned c2 = frame->data[2][y * frame->linesize[2] + x];
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if (s0 == c0 && s1 == c1 && s2 == c2)
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return 1;
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return 0;
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}
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static int is_same3_16(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3)
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{
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unsigned c0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
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unsigned c1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
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unsigned c2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
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if (s0 == c0 && s1 == c1 && s2 == c2)
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return 1;
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return 0;
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}
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static int is_same1(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3)
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{
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unsigned c0 = frame->data[0][y * frame->linesize[0] + x];
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if (s0 == c0)
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return 1;
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return 0;
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}
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static int is_same1_16(AVFrame *frame, int x, int y,
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unsigned s0, unsigned s1, unsigned s2, unsigned s3)
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{
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unsigned c0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
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if (s0 == c0)
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return 1;
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return 0;
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}
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static void set_pixel1(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3)
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{
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frame->data[0][y * frame->linesize[0] + x] = d0;
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}
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static void set_pixel1_16(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3)
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{
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AV_WN16(frame->data[0] + y * frame->linesize[0] + 2 * x, d0);
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}
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static void set_pixel3(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3)
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{
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frame->data[0][y * frame->linesize[0] + x] = d0;
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frame->data[1][y * frame->linesize[1] + x] = d1;
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frame->data[2][y * frame->linesize[2] + x] = d2;
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}
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static void set_pixel3_16(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3)
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{
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AV_WN16(frame->data[0] + y * frame->linesize[0] + 2 * x, d0);
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AV_WN16(frame->data[1] + y * frame->linesize[1] + 2 * x, d1);
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AV_WN16(frame->data[2] + y * frame->linesize[2] + 2 * x, d2);
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}
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static void set_pixel4(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3)
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{
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frame->data[0][y * frame->linesize[0] + x] = d0;
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frame->data[1][y * frame->linesize[1] + x] = d1;
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frame->data[2][y * frame->linesize[2] + x] = d2;
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frame->data[3][y * frame->linesize[3] + x] = d3;
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}
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static void set_pixel4_16(AVFrame *frame, int x, int y,
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unsigned d0, unsigned d1, unsigned d2, unsigned d3)
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{
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AV_WN16(frame->data[0] + y * frame->linesize[0] + 2 * x, d0);
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AV_WN16(frame->data[1] + y * frame->linesize[1] + 2 * x, d1);
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AV_WN16(frame->data[2] + y * frame->linesize[2] + 2 * x, d2);
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AV_WN16(frame->data[3] + y * frame->linesize[3] + 2 * x, d3);
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}
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static void pick_pixel1(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3)
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{
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if (*s0 < 0)
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*s0 = frame->data[0][y * frame->linesize[0] + x];
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}
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static void pick_pixel1_16(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3)
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{
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if (*s0 < 0)
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*s0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
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}
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static void pick_pixel3(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3)
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{
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if (*s0 < 0)
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*s0 = frame->data[0][y * frame->linesize[0] + x];
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if (*s1 < 0)
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*s1 = frame->data[1][y * frame->linesize[1] + x];
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if (*s2 < 0)
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*s2 = frame->data[2][y * frame->linesize[2] + x];
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}
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static void pick_pixel3_16(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3)
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{
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if (*s0 < 0)
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*s0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
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if (*s1 < 0)
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*s1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
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if (*s2 < 0)
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*s2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
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}
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static void pick_pixel4(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3)
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{
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if (*s0 < 0)
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*s0 = frame->data[0][y * frame->linesize[0] + x];
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if (*s1 < 0)
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*s1 = frame->data[1][y * frame->linesize[1] + x];
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if (*s2 < 0)
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*s2 = frame->data[2][y * frame->linesize[2] + x];
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if (*s3 < 0)
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*s3 = frame->data[3][y * frame->linesize[3] + x];
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}
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static void pick_pixel4_16(AVFrame *frame, int x, int y,
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int *s0, int *s1, int *s2, int *s3)
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{
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if (*s0 < 0)
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*s0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
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if (*s1 < 0)
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*s1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
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if (*s2 < 0)
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*s2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
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if (*s3 < 0)
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*s3 = AV_RN16(frame->data[3] + y * frame->linesize[3] + 2 * x);
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}
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static int config_input(AVFilterLink *inlink)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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AVFilterContext *ctx = inlink->dst;
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FloodfillContext *s = ctx->priv;
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int depth;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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depth = desc->comp[0].depth;
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if (depth == 8) {
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switch (s->nb_planes) {
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case 1: s->set_pixel = set_pixel1;
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s->is_same = is_same1;
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s->pick_pixel = pick_pixel1; break;
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case 3: s->set_pixel = set_pixel3;
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s->is_same = is_same3;
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s->pick_pixel = pick_pixel3; break;
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case 4: s->set_pixel = set_pixel4;
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s->is_same = is_same4;
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s->pick_pixel = pick_pixel4; break;
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}
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} else {
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switch (s->nb_planes) {
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case 1: s->set_pixel = set_pixel1_16;
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s->is_same = is_same1_16;
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s->pick_pixel = pick_pixel1_16; break;
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case 3: s->set_pixel = set_pixel3_16;
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s->is_same = is_same3_16;
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s->pick_pixel = pick_pixel3_16; break;
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case 4: s->set_pixel = set_pixel4_16;
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s->is_same = is_same4_16;
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s->pick_pixel = pick_pixel4_16; break;
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}
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}
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s->front = s->back = 0;
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s->points = av_calloc(inlink->w * inlink->h, 4 * sizeof(Points));
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if (!s->points)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int filter_frame(AVFilterLink *link, AVFrame *frame)
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{
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AVFilterContext *ctx = link->dst;
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FloodfillContext *s = ctx->priv;
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const unsigned d0 = s->d[0];
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const unsigned d1 = s->d[1];
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const unsigned d2 = s->d[2];
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const unsigned d3 = s->d[3];
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int s0 = s->s[0];
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int s1 = s->s[1];
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int s2 = s->s[2];
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int s3 = s->s[3];
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const int w = frame->width;
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const int h = frame->height;
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int i, ret;
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if (is_inside(s->x, s->y, w, h)) {
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s->pick_pixel(frame, s->x, s->y, &s0, &s1, &s2, &s3);
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s->S[0] = s0;
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s->S[1] = s1;
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s->S[2] = s2;
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s->S[3] = s3;
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for (i = 0; i < s->nb_planes; i++) {
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if (s->S[i] != s->d[i])
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break;
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}
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if (i == s->nb_planes)
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goto end;
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if (s->is_same(frame, s->x, s->y, s0, s1, s2, s3)) {
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s->points[s->front].x = s->x;
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s->points[s->front].y = s->y;
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s->front++;
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}
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if (ret = av_frame_make_writable(frame))
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return ret;
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while (s->front > s->back) {
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int x, y;
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s->front--;
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x = s->points[s->front].x;
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y = s->points[s->front].y;
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if (s->is_same(frame, x, y, s0, s1, s2, s3)) {
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s->set_pixel(frame, x, y, d0, d1, d2, d3);
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if (is_inside(x + 1, y, w, h)) {
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s->points[s->front] .x = x + 1;
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s->points[s->front++].y = y;
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}
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|
||
|
|
if (is_inside(x - 1, y, w, h)) {
|
||
|
|
s->points[s->front] .x = x - 1;
|
||
|
|
s->points[s->front++].y = y;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (is_inside(x, y + 1, w, h)) {
|
||
|
|
s->points[s->front] .x = x;
|
||
|
|
s->points[s->front++].y = y + 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (is_inside(x, y - 1, w, h)) {
|
||
|
|
s->points[s->front] .x = x;
|
||
|
|
s->points[s->front++].y = y - 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
end:
|
||
|
|
return ff_filter_frame(ctx->outputs[0], frame);
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold int query_formats(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
static const enum AVPixelFormat pixel_fmts[] = {
|
||
|
|
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
|
||
|
|
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
|
||
|
|
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
|
||
|
|
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
|
||
|
|
AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GBRAP,
|
||
|
|
AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10,
|
||
|
|
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16,
|
||
|
|
AV_PIX_FMT_NONE
|
||
|
|
};
|
||
|
|
AVFilterFormats *formats;
|
||
|
|
|
||
|
|
formats = ff_make_format_list(pixel_fmts);
|
||
|
|
if (!formats)
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
|
||
|
|
return ff_set_common_formats(ctx, formats);
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
FloodfillContext *s = ctx->priv;
|
||
|
|
|
||
|
|
av_freep(&s->points);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const AVFilterPad floodfill_inputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.filter_frame = filter_frame,
|
||
|
|
.config_props = config_input,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
static const AVFilterPad floodfill_outputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
#define OFFSET(x) offsetof(FloodfillContext, x)
|
||
|
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
|
||
|
|
|
||
|
|
static const AVOption floodfill_options[] = {
|
||
|
|
{ "x", "set pixel x coordinate", OFFSET(x), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
|
||
|
|
{ "y", "set pixel y coordinate", OFFSET(y), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
|
||
|
|
{ "s0", "set source #0 component value", OFFSET(s[0]), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
|
||
|
|
{ "s1", "set source #1 component value", OFFSET(s[1]), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
|
||
|
|
{ "s2", "set source #2 component value", OFFSET(s[2]), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
|
||
|
|
{ "s3", "set source #3 component value", OFFSET(s[3]), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
|
||
|
|
{ "d0", "set destination #0 component value", OFFSET(d[0]), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
|
||
|
|
{ "d1", "set destination #1 component value", OFFSET(d[1]), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
|
||
|
|
{ "d2", "set destination #2 component value", OFFSET(d[2]), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
|
||
|
|
{ "d3", "set destination #3 component value", OFFSET(d[3]), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFILTER_DEFINE_CLASS(floodfill);
|
||
|
|
|
||
|
|
AVFilter ff_vf_floodfill = {
|
||
|
|
.name = "floodfill",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Fill area with same color with another color."),
|
||
|
|
.priv_size = sizeof(FloodfillContext),
|
||
|
|
.priv_class = &floodfill_class,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.uninit = uninit,
|
||
|
|
.inputs = floodfill_inputs,
|
||
|
|
.outputs = floodfill_outputs,
|
||
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
|
||
|
|
};
|