[FFmpeg-cvslog] avfilter: add floodfill filter
Paul B Mahol
git at videolan.org
Sat Aug 5 22:10:07 EEST 2017
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Aug 5 20:27:32 2017 +0200| [2cc56741b1f4e33c4fdb8234da31bdfc3c5c5e05] | committer: Paul B Mahol
avfilter: add floodfill filter
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2cc56741b1f4e33c4fdb8234da31bdfc3c5c5e05
---
Changelog | 1 +
doc/filters.texi | 37 ++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 2 +-
libavfilter/vf_floodfill.c | 433 +++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 474 insertions(+), 1 deletion(-)
diff --git a/Changelog b/Changelog
index 86ce41807d..c797d68a36 100644
--- a/Changelog
+++ b/Changelog
@@ -31,6 +31,7 @@ version <next>:
- Dolby E decoder and SMPTE 337M demuxer
- unpremultiply video filter
- tlut2 video filter
+- floodfill video filter
version 3.3:
- CrystalHD decoder moved to new decode API
diff --git a/doc/filters.texi b/doc/filters.texi
index 7e5a9a625a..c1d572f71a 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -8404,6 +8404,43 @@ ffmpeg -i file.ts -vf find_rect=newref.pgm,cover_rect=cover.jpg:mode=cover new.m
@end example
@end itemize
+ at section floodfill
+
+Flood area with values of same pixel components with another values.
+
+It accepts the following options:
+ at table @option
+ at item x
+Set pixel x coordinate.
+
+ at item y
+Set pixel y coordinate.
+
+ at item s0
+Set source #0 component value.
+
+ at item s1
+Set source #1 component value.
+
+ at item s2
+Set source #2 component value.
+
+ at item s3
+Set source #3 component value.
+
+ at item d0
+Set destination #0 component value.
+
+ at item d1
+Set destination #1 component value.
+
+ at item d2
+Set destination #2 component value.
+
+ at item d3
+Set destination #3 component value.
+ at end table
+
@anchor{format}
@section format
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index f615c669e7..06b915fc91 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -186,6 +186,7 @@ OBJS-$(CONFIG_FIELDHINT_FILTER) += vf_fieldhint.o
OBJS-$(CONFIG_FIELDMATCH_FILTER) += vf_fieldmatch.o
OBJS-$(CONFIG_FIELDORDER_FILTER) += vf_fieldorder.o
OBJS-$(CONFIG_FIND_RECT_FILTER) += vf_find_rect.o lavfutils.o
+OBJS-$(CONFIG_FLOODFILL_FILTER) += vf_floodfill.o
OBJS-$(CONFIG_FORMAT_FILTER) += vf_format.o
OBJS-$(CONFIG_FPS_FILTER) += vf_fps.o
OBJS-$(CONFIG_FRAMEPACK_FILTER) += vf_framepack.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 32f26804b0..e58c0d5c82 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -198,6 +198,7 @@ static void register_all(void)
REGISTER_FILTER(FIELDMATCH, fieldmatch, vf);
REGISTER_FILTER(FIELDORDER, fieldorder, vf);
REGISTER_FILTER(FIND_RECT, find_rect, vf);
+ REGISTER_FILTER(FLOODFILL, floodfill, vf);
REGISTER_FILTER(FORMAT, format, vf);
REGISTER_FILTER(FPS, fps, vf);
REGISTER_FILTER(FRAMEPACK, framepack, vf);
diff --git a/libavfilter/version.h b/libavfilter/version.h
index ff0467cc15..1d37fd8e4b 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 6
-#define LIBAVFILTER_VERSION_MINOR 97
+#define LIBAVFILTER_VERSION_MINOR 98
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
diff --git a/libavfilter/vf_floodfill.c b/libavfilter/vf_floodfill.c
new file mode 100644
index 0000000000..323dd0e2fa
--- /dev/null
+++ b/libavfilter/vf_floodfill.c
@@ -0,0 +1,433 @@
+/*
+ * Copyright (c) 2017 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/opt.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/intreadwrite.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+typedef struct Points {
+ uint16_t x, y;
+} Points;
+
+typedef struct FloodfillContext {
+ const AVClass *class;
+
+ int x, y;
+ int s0, s1, s2, s3;
+ int d0, d1, d2, d3;
+
+ int back, front;
+ Points *points;
+
+ int (*is_same)(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3);
+ void (*set_pixel)(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3);
+ void (*pick_pixel)(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3);
+} FloodfillContext;
+
+static int is_inside(int x, int y, int w, int h)
+{
+ if (x >= 0 && x < w && y >= 0 && y < h)
+ return 1;
+ return 0;
+}
+
+static int is_same4(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3)
+{
+ unsigned c0 = frame->data[0][y * frame->linesize[0] + x];
+ unsigned c1 = frame->data[1][y * frame->linesize[1] + x];
+ unsigned c2 = frame->data[2][y * frame->linesize[2] + x];
+ unsigned c3 = frame->data[3][y * frame->linesize[3] + x];
+
+ if (s0 == c0 && s1 == c1 && s2 == c2 && s3 == c3)
+ return 1;
+ return 0;
+}
+
+static int is_same4_16(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3)
+{
+ unsigned c0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
+ unsigned c1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
+ unsigned c2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
+ unsigned c3 = AV_RN16(frame->data[3] + y * frame->linesize[3] + 2 * x);
+
+ if (s0 == c0 && s1 == c1 && s2 == c2 && s3 == c3)
+ return 1;
+ return 0;
+}
+
+static int is_same3(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3)
+{
+ unsigned c0 = frame->data[0][y * frame->linesize[0] + x];
+ unsigned c1 = frame->data[1][y * frame->linesize[1] + x];
+ unsigned c2 = frame->data[2][y * frame->linesize[2] + x];
+
+ if (s0 == c0 && s1 == c1 && s2 == c2)
+ return 1;
+ return 0;
+}
+
+static int is_same3_16(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3)
+{
+ unsigned c0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
+ unsigned c1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
+ unsigned c2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
+
+ if (s0 == c0 && s1 == c1 && s2 == c2)
+ return 1;
+ return 0;
+}
+
+static int is_same1(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3)
+{
+ unsigned c0 = frame->data[0][y * frame->linesize[0] + x];
+
+ if (s0 == c0)
+ return 1;
+ return 0;
+}
+
+static int is_same1_16(AVFrame *frame, int x, int y,
+ unsigned s0, unsigned s1, unsigned s2, unsigned s3)
+{
+ unsigned c0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
+
+ if (s0 == c0)
+ return 1;
+ return 0;
+}
+
+static void set_pixel1(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3)
+{
+ frame->data[0][y * frame->linesize[0] + x] = d0;
+}
+
+static void set_pixel1_16(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3)
+{
+ AV_WN16(frame->data[0] + y * frame->linesize[0] + 2 * x, d0);
+}
+
+static void set_pixel3(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3)
+{
+ frame->data[0][y * frame->linesize[0] + x] = d0;
+ frame->data[1][y * frame->linesize[1] + x] = d1;
+ frame->data[2][y * frame->linesize[2] + x] = d2;
+}
+
+static void set_pixel3_16(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3)
+{
+ AV_WN16(frame->data[0] + y * frame->linesize[0] + 2 * x, d0);
+ AV_WN16(frame->data[1] + y * frame->linesize[1] + 2 * x, d1);
+ AV_WN16(frame->data[2] + y * frame->linesize[2] + 2 * x, d2);
+}
+
+static void set_pixel4(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3)
+{
+ frame->data[0][y * frame->linesize[0] + x] = d0;
+ frame->data[1][y * frame->linesize[1] + x] = d1;
+ frame->data[2][y * frame->linesize[2] + x] = d2;
+ frame->data[3][y * frame->linesize[3] + x] = d3;
+}
+
+static void set_pixel4_16(AVFrame *frame, int x, int y,
+ unsigned d0, unsigned d1, unsigned d2, unsigned d3)
+{
+ AV_WN16(frame->data[0] + y * frame->linesize[0] + 2 * x, d0);
+ AV_WN16(frame->data[1] + y * frame->linesize[1] + 2 * x, d1);
+ AV_WN16(frame->data[2] + y * frame->linesize[2] + 2 * x, d2);
+ AV_WN16(frame->data[3] + y * frame->linesize[3] + 2 * x, d3);
+}
+
+static void pick_pixel1(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3)
+{
+ if (*s0 < 0)
+ *s0 = frame->data[0][y * frame->linesize[0] + x];
+}
+
+static void pick_pixel1_16(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3)
+{
+ if (*s0 < 0)
+ *s0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
+}
+
+static void pick_pixel3(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3)
+{
+ if (*s0 < 0)
+ *s0 = frame->data[0][y * frame->linesize[0] + x];
+ if (*s1 < 0)
+ *s1 = frame->data[1][y * frame->linesize[1] + x];
+ if (*s2 < 0)
+ *s2 = frame->data[2][y * frame->linesize[2] + x];
+}
+
+static void pick_pixel3_16(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3)
+{
+ if (*s0 < 0)
+ *s0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
+ if (*s1 < 0)
+ *s1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
+ if (*s2 < 0)
+ *s2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
+}
+
+static void pick_pixel4(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3)
+{
+ if (*s0 < 0)
+ *s0 = frame->data[0][y * frame->linesize[0] + x];
+ if (*s1 < 0)
+ *s1 = frame->data[1][y * frame->linesize[1] + x];
+ if (*s2 < 0)
+ *s2 = frame->data[2][y * frame->linesize[2] + x];
+ if (*s3 < 0)
+ *s3 = frame->data[3][y * frame->linesize[3] + x];
+}
+
+static void pick_pixel4_16(AVFrame *frame, int x, int y,
+ int *s0, int *s1, int *s2, int *s3)
+{
+ if (*s0 < 0)
+ *s0 = AV_RN16(frame->data[0] + y * frame->linesize[0] + 2 * x);
+ if (*s1 < 0)
+ *s1 = AV_RN16(frame->data[1] + y * frame->linesize[1] + 2 * x);
+ if (*s2 < 0)
+ *s2 = AV_RN16(frame->data[2] + y * frame->linesize[2] + 2 * x);
+ if (*s3 < 0)
+ *s3 = AV_RN16(frame->data[3] + y * frame->linesize[3] + 2 * x);
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ AVFilterContext *ctx = inlink->dst;
+ FloodfillContext *s = ctx->priv;
+ int nb_planes = av_pix_fmt_count_planes(inlink->format);
+ int depth;
+
+ depth = desc->comp[0].depth;
+ if (depth == 8) {
+ switch (nb_planes) {
+ case 1: s->set_pixel = set_pixel1;
+ s->is_same = is_same1;
+ s->pick_pixel = pick_pixel1; break;
+ case 3: s->set_pixel = set_pixel3;
+ s->is_same = is_same3;
+ s->pick_pixel = pick_pixel3; break;
+ case 4: s->set_pixel = set_pixel4;
+ s->is_same = is_same4;
+ s->pick_pixel = pick_pixel4; break;
+ }
+ } else {
+ switch (nb_planes) {
+ case 1: s->set_pixel = set_pixel1_16;
+ s->is_same = is_same1_16;
+ s->pick_pixel = pick_pixel1_16; break;
+ case 3: s->set_pixel = set_pixel3_16;
+ s->is_same = is_same3_16;
+ s->pick_pixel = pick_pixel3_16; break;
+ case 4: s->set_pixel = set_pixel4_16;
+ s->is_same = is_same4_16;
+ s->pick_pixel = pick_pixel4_16; break;
+ }
+ }
+
+ s->front = s->back = 0;
+ s->points = av_calloc(inlink->w * inlink->h, 4 * sizeof(Points));
+ if (!s->points)
+ return AVERROR(ENOMEM);
+
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *link, AVFrame *frame)
+{
+ AVFilterContext *ctx = link->dst;
+ FloodfillContext *s = ctx->priv;
+ const unsigned d0 = s->d0;
+ const unsigned d1 = s->d1;
+ const unsigned d2 = s->d2;
+ const unsigned d3 = s->d3;
+ int s0 = s->s0;
+ int s1 = s->s1;
+ int s2 = s->s2;
+ int s3 = s->s3;
+ const int w = frame->width;
+ const int h = frame->height;
+ int ret;
+
+ if (ret = av_frame_make_writable(frame))
+ return ret;
+
+ if (is_inside(s->x, s->y, w, h)) {
+ s->pick_pixel(frame, s->x, s->y, &s0, &s1, &s2, &s3);
+
+ if (s->is_same(frame, s->x, s->y, s0, s1, s2, s3)) {
+ s->points[s->front].x = s->x;
+ s->points[s->front].y = s->y;
+ s->front++;
+ }
+
+ while (s->front > s->back) {
+ int x, y;
+
+ s->front--;
+ x = s->points[s->front].x;
+ y = s->points[s->front].y;
+
+ if (s->is_same(frame, x, y, s0, s1, s2, s3)) {
+ s->set_pixel(frame, x, y, d0, d1, d2, d3);
+
+ 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 - 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;
+ }
+ }
+ }
+ }
+
+ 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_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_GRAY16,
+ 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(s0), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
+ { "s1", "set source #1 component value", OFFSET(s1), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
+ { "s2", "set source #2 component value", OFFSET(s2), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
+ { "s3", "set source #3 component value", OFFSET(s3), AV_OPT_TYPE_INT, {.i64=0},-1, UINT16_MAX, FLAGS },
+ { "d0", "set destination #0 component value", OFFSET(d0), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
+ { "d1", "set destination #1 component value", OFFSET(d1), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
+ { "d2", "set destination #2 component value", OFFSET(d2), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
+ { "d3", "set destination #3 component value", OFFSET(d3), 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,
+};
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