[FFmpeg-devel] [PATCH] avfilter: add atadenoise
Paul B Mahol
onemda at gmail.com
Thu Jul 30 17:36:28 CEST 2015
---
doc/filters.texi | 38 +++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_atadenoise.c | 327 ++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 367 insertions(+)
create mode 100755 libavfilter/vf_atadenoise.c
diff --git a/doc/filters.texi b/doc/filters.texi
index 4c4beea..9f1b8b6 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -2967,6 +2967,44 @@ Slower shaper using OpenType for substitutions and positioning
The default is @code{auto}.
@end table
+ at section atadenoise
+Apply an Adaptive Temporal Averaging Denoiser to the video input.
+
+The filter accepts the following options:
+
+ at table @option
+ at item 0a
+Set threshold A for 1st plane. Default is 5.
+Valid range is 1 to 50.
+
+ at item 0b
+Set threshold B for 1st plane. Default is 10.
+Valid range is 1 to 100.
+
+ at item 1a
+Set threshold A for 2nd plane. Default is 4.
+Valid range is 1 to 50.
+
+ at item 1b
+Set threshold B for 2nd plane. Default is 8.
+Valid range is 1 to 100.
+
+ at item 2a
+Set threshold A for 3rd plane. Default is 4.
+Valid range is 1 to 50.
+
+ at item 2b
+Set threshold B for 3rd plane. Default is 8.
+Valid range is 1 to 100.
+
+Threshold A is designed to react on abrupt changes in the input signal and
+Threshold B is designed to react on continuous changes in the input signal.
+
+ at item s
+Set number of frames filter will use for averaging. Default is 33. Must be odd
+number in range [5, 129].
+ at end table
+
@section bbox
Compute the bounding box for the non-black pixels in the input frame
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 5d03e86..f1a88d3 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -98,6 +98,7 @@ OBJS-$(CONFIG_ANULLSINK_FILTER) += asink_anullsink.o
OBJS-$(CONFIG_ASS_FILTER) += vf_subtitles.o
OBJS-$(CONFIG_ALPHAEXTRACT_FILTER) += vf_extractplanes.o
OBJS-$(CONFIG_ALPHAMERGE_FILTER) += vf_alphamerge.o
+OBJS-$(CONFIG_ATADENOISE_FILTER) += vf_atadenoise.o
OBJS-$(CONFIG_BBOX_FILTER) += bbox.o vf_bbox.o
OBJS-$(CONFIG_BLACKDETECT_FILTER) += vf_blackdetect.o
OBJS-$(CONFIG_BLACKFRAME_FILTER) += vf_blackframe.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index ceac705..750ba55 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -113,6 +113,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(ALPHAEXTRACT, alphaextract, vf);
REGISTER_FILTER(ALPHAMERGE, alphamerge, vf);
+ REGISTER_FILTER(ATADENOISE, atadenoise, vf);
REGISTER_FILTER(ASS, ass, vf);
REGISTER_FILTER(BBOX, bbox, vf);
REGISTER_FILTER(BLACKDETECT, blackdetect, vf);
diff --git a/libavfilter/vf_atadenoise.c b/libavfilter/vf_atadenoise.c
new file mode 100755
index 0000000..b2d0604
--- /dev/null
+++ b/libavfilter/vf_atadenoise.c
@@ -0,0 +1,327 @@
+/*
+ * Copyright (c) 2015 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
+ */
+
+/**
+ * @file
+ * Adaptive Temporal Averaging Denoiser,
+ * based on paper "Video Denoising Based on Adaptive Temporal Averaging" by
+ * David Bartovčak and Miroslav Vrankić
+ */
+
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+
+#define FF_BUFQUEUE_SIZE 129
+#include "bufferqueue.h"
+
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+#define SIZE FF_BUFQUEUE_SIZE
+
+typedef struct ATADenoiseContext {
+ const AVClass *class;
+
+ int thra[4], thrb[4];
+
+ int nb_planes;
+ int planewidth[4];
+ int planeheight[4];
+
+ struct FFBufQueue q;
+ void *data[4][SIZE];
+ int linesize[4][SIZE];
+ int size, mid;
+ int available;
+} ATADenoiseContext;
+
+#define OFFSET(x) offsetof(ATADenoiseContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption atadenoise_options[] = {
+ { "0a", "set threshold A for 1st plane", OFFSET(thra[0]), AV_OPT_TYPE_INT, {.i64=5 }, 1, 50, FLAGS },
+ { "0b", "set threshold B for 1st plane", OFFSET(thrb[0]), AV_OPT_TYPE_INT, {.i64=10}, 1, 100, FLAGS },
+ { "1a", "set threshold A for 2nd plane", OFFSET(thra[1]), AV_OPT_TYPE_INT, {.i64=4 }, 1, 50, FLAGS },
+ { "1b", "set threshold B for 2nd plane", OFFSET(thrb[1]), AV_OPT_TYPE_INT, {.i64=8 }, 1, 100, FLAGS },
+ { "2a", "set threshold A for 3rd plane", OFFSET(thra[2]), AV_OPT_TYPE_INT, {.i64=4 }, 1, 50, FLAGS },
+ { "2b", "set threshold B for 3rd plane", OFFSET(thrb[2]), AV_OPT_TYPE_INT, {.i64=8 }, 1, 100, FLAGS },
+ { "s", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=33}, 5, SIZE, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(atadenoise);
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum AVPixelFormat pixel_fmts[] = {
+ AV_PIX_FMT_GRAY8,
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
+ AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_YUVJ411P,
+ AV_PIX_FMT_GBRP,
+ AV_PIX_FMT_NONE
+ };
+ AVFilterFormats *formats = ff_make_format_list(pixel_fmts);
+ if (!formats)
+ return AVERROR(ENOMEM);
+ return ff_set_common_formats(ctx, formats);
+}
+
+static av_cold int init(AVFilterContext *ctx)
+{
+ ATADenoiseContext *s = ctx->priv;
+
+ if (!(s->size & 1)) {
+ av_log(ctx, AV_LOG_ERROR, "size %d is invalid. Must be an odd value.\n", s->size);
+ return AVERROR(EINVAL);
+ }
+ s->mid = s->size / 2 + 1;
+
+ return 0;
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ AVFilterContext *ctx = inlink->dst;
+ ATADenoiseContext *s = ctx->priv;
+
+ s->nb_planes = desc->nb_components;
+
+ s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
+ s->planeheight[0] = s->planeheight[3] = inlink->h;
+ s->planewidth[1] = s->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
+ s->planewidth[0] = s->planewidth[3] = inlink->w;
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
+ return 0;
+}
+
+typedef struct ThreadData {
+ AVFrame *in, *out;
+} ThreadData;
+
+static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+{
+ ATADenoiseContext *s = ctx->priv;
+ ThreadData *td = arg;
+ AVFrame *in = td->in;
+ AVFrame *out = td->out;
+ const int size = s->size;
+ const int mid = s->mid;
+ int p, x, y, i, j;
+
+ for (p = 0; p < s->nb_planes; p++) {
+ const int h = s->planeheight[p];
+ const int w = s->planewidth[p];
+ const int slice_start = (h * jobnr) / nb_jobs;
+ const int slice_end = (h * (jobnr+1)) / nb_jobs;
+ const uint8_t *src = in->data[p] + slice_start * in->linesize[p];
+ uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
+ const int thra = s->thra[p];
+ const int thrb = s->thrb[p];
+ uint8_t **data = (uint8_t **)s->data[p];
+ int *linesize = (int *)s->linesize[p];
+ uint8_t *srcf[SIZE];
+
+ for (i = 0; i < s->size; i++)
+ srcf[i] = data[i] + slice_start * linesize[i];
+
+ for (y = slice_start; y < slice_end; y++) {
+ for (x = 0; x < w; x++) {
+ const int srcx = src[x];
+ unsigned lsumdiff = 0, rsumdiff = 0;
+ unsigned ldiff, rdiff;
+ unsigned sum = srcx;
+ int l = 0, r = 0;
+ int srcjx, srcix;
+
+ for (j = mid - 1, i = mid + 1; j >= 0 && i < size; j--, i++) {
+ srcjx = srcf[j][x];
+
+ ldiff = FFABS(srcx - srcjx);
+ lsumdiff += ldiff;
+ if (ldiff > thra ||
+ lsumdiff > thrb) {
+ break;
+ }
+ l++;
+ sum += srcjx;
+
+ srcix = srcf[i][x];
+
+ rdiff = FFABS(srcx - srcix);
+ rsumdiff += rdiff;
+ if (rdiff > thra ||
+ rsumdiff > thrb) {
+ break;
+ }
+ r++;
+ sum += srcix;
+ }
+
+ dst[x] = sum / (r + l + 1);
+ }
+
+ dst += out->linesize[p];
+ src += in->linesize[p];
+
+ for (i = 0; i < s->size; i++)
+ srcf[i] += linesize[i];
+ }
+ }
+
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
+{
+ AVFilterContext *ctx = inlink->dst;
+ AVFilterLink *outlink = ctx->outputs[0];
+ ATADenoiseContext *s = ctx->priv;
+ AVFrame *out, *in;
+ int i;
+
+ if (s->q.available != s->size) {
+ if (s->q.available < s->mid) {
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ for (i = 0; i < s->mid; i++)
+ ff_bufqueue_add(ctx, &s->q, av_frame_clone(out));
+ av_frame_free(&out);
+ }
+ if (s->q.available < s->size) {
+ ff_bufqueue_add(ctx, &s->q, buf);
+ s->available++;
+ }
+ return 0;
+ }
+
+ in = ff_bufqueue_peek(&s->q, s->mid);
+
+ if (!ctx->is_disabled) {
+ ThreadData td;
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&buf);
+ return AVERROR(ENOMEM);
+ }
+
+ for (i = 0; i < s->size; i++) {
+ AVFrame *frame = ff_bufqueue_peek(&s->q, i);
+
+ s->data[0][i] = frame->data[0];
+ s->data[1][i] = frame->data[1];
+ s->data[2][i] = frame->data[2];
+ s->linesize[0][i] = frame->linesize[0];
+ s->linesize[1][i] = frame->linesize[1];
+ s->linesize[2][i] = frame->linesize[2];
+ }
+
+ td.in = in; td.out = out;
+ ctx->internal->execute(ctx, filter_slice, &td, NULL,
+ FFMIN3(s->planeheight[1],
+ s->planeheight[2],
+ ctx->graph->nb_threads));
+ av_frame_copy_props(out, in);
+ } else {
+ out = av_frame_clone(in);
+ if (!out) {
+ av_frame_free(&buf);
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ in = ff_bufqueue_get(&s->q);
+ av_frame_free(&in);
+ ff_bufqueue_add(ctx, &s->q, buf);
+
+ return ff_filter_frame(outlink, out);
+}
+
+static int request_frame(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ ATADenoiseContext *s = ctx->priv;
+ int ret = 0;
+
+ ret = ff_request_frame(ctx->inputs[0]);
+
+ if (ret == AVERROR_EOF && !ctx->is_disabled && s->available) {
+ AVFrame *buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!buf)
+ return AVERROR(ENOMEM);
+
+ ret = filter_frame(ctx->inputs[0], buf);
+ s->available--;
+ }
+
+ return ret;
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ ATADenoiseContext *s = ctx->priv;
+
+ ff_bufqueue_discard_all(&s->q);
+}
+
+static const AVFilterPad inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ .config_props = config_input,
+ },
+ { NULL }
+};
+
+static const AVFilterPad outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .request_frame = request_frame,
+ .config_props = config_output,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_atadenoise = {
+ .name = "atadenoise",
+ .description = NULL_IF_CONFIG_SMALL("Apply an Adaptive Temporal Averaging Denoiser."),
+ .priv_size = sizeof(ATADenoiseContext),
+ .priv_class = &atadenoise_class,
+ .init = init,
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = inputs,
+ .outputs = outputs,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
+};
--
2.4.5
More information about the ffmpeg-devel
mailing list