[FFmpeg-cvslog] avfilter: add deflicker filter
Paul B Mahol
git at videolan.org
Thu Apr 20 23:56:08 EEST 2017
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Tue Apr 18 15:18:40 2017 +0200| [74acc1eec58288c9f3e35924a88807ab7dd33569] | committer: Paul B Mahol
avfilter: add deflicker filter
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=74acc1eec58288c9f3e35924a88807ab7dd33569
---
Changelog | 1 +
doc/filters.texi | 38 ++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 4 +-
libavfilter/vf_deflicker.c | 468 +++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 511 insertions(+), 2 deletions(-)
diff --git a/Changelog b/Changelog
index e76b324f61..8a4eb5ad76 100644
--- a/Changelog
+++ b/Changelog
@@ -2,6 +2,7 @@ Entries are sorted chronologically from oldest to youngest within each release,
releases are sorted from youngest to oldest.
version <next>:
+- deflicker video filter
version 3.3:
- CrystalHD decoder moved to new decode API
diff --git a/doc/filters.texi b/doc/filters.texi
index e002f25932..83b811171a 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -6253,6 +6253,44 @@ Limit the maximum change for each plane, default is 65535.
If 0, plane will remain unchanged.
@end table
+ at section deflicker
+
+Remove temporal frame luminance variations.
+
+It accepts the following options:
+
+ at table @option
+ at item size, s
+Set moving-average filter size. Default is 5. Allowed range is 2 - 129.
+
+ at item mode, m
+Set averaging mode to smooth temporal luminance variations.
+
+Available values are:
+ at table @samp
+ at item am
+Arithmetic mean
+
+ at item gm
+Geometric mean
+
+ at item hm
+Harmonic mean
+
+ at item qm
+Quadratic mean
+
+ at item cm
+Cubic mean
+
+ at item pm
+Power mean
+
+ at item median
+Median
+ at end table
+ at end table
+
@section dejudder
Remove judder produced by partially interlaced telecined content.
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index d6daa7a8a8..6de7cc0ff3 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -155,6 +155,7 @@ OBJS-$(CONFIG_DCTDNOIZ_FILTER) += vf_dctdnoiz.o
OBJS-$(CONFIG_DEBAND_FILTER) += vf_deband.o
OBJS-$(CONFIG_DECIMATE_FILTER) += vf_decimate.o
OBJS-$(CONFIG_DEFLATE_FILTER) += vf_neighbor.o
+OBJS-$(CONFIG_DEFLICKER_FILTER) += vf_deflicker.o
OBJS-$(CONFIG_DEINTERLACE_QSV_FILTER) += vf_deinterlace_qsv.o
OBJS-$(CONFIG_DEINTERLACE_VAAPI_FILTER) += vf_deinterlace_vaapi.o
OBJS-$(CONFIG_DEJUDDER_FILTER) += vf_dejudder.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index ec6ec048e8..0e69f99509 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -166,6 +166,7 @@ static void register_all(void)
REGISTER_FILTER(DEBAND, deband, vf);
REGISTER_FILTER(DECIMATE, decimate, vf);
REGISTER_FILTER(DEFLATE, deflate, vf);
+ REGISTER_FILTER(DEFLICKER, deflicker, vf);
REGISTER_FILTER(DEINTERLACE_QSV,deinterlace_qsv,vf);
REGISTER_FILTER(DEINTERLACE_VAAPI, deinterlace_vaapi, vf);
REGISTER_FILTER(DEJUDDER, dejudder, vf);
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 1f9c7996c3..1f0b72a4fc 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -30,8 +30,8 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 6
-#define LIBAVFILTER_VERSION_MINOR 84
-#define LIBAVFILTER_VERSION_MICRO 101
+#define LIBAVFILTER_VERSION_MINOR 85
+#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
diff --git a/libavfilter/vf_deflicker.c b/libavfilter/vf_deflicker.c
new file mode 100644
index 0000000000..3cda354b2b
--- /dev/null
+++ b/libavfilter/vf_deflicker.c
@@ -0,0 +1,468 @@
+/*
+ * 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/imgutils.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/qsort.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
+
+enum smooth_mode {
+ ARITHMETIC_MEAN,
+ GEOMETRIC_MEAN,
+ HARMONIC_MEAN,
+ QUADRATIC_MEAN,
+ CUBIC_MEAN,
+ POWER_MEAN,
+ MEDIAN,
+ NB_SMOOTH_MODE,
+};
+
+typedef struct DeflickerContext {
+ const AVClass *class;
+
+ int size;
+ int mode;
+
+ int eof;
+ int depth;
+ int nb_planes;
+ int planewidth[4];
+ int planeheight[4];
+
+ uint64_t *histogram;
+ float luminance[SIZE];
+ float sorted[SIZE];
+
+ struct FFBufQueue q;
+ int available;
+
+ void (*get_factor)(AVFilterContext *ctx, float *f);
+ float (*calc_avgy)(AVFilterContext *ctx, AVFrame *in);
+ int (*deflicker)(AVFilterContext *ctx, const uint8_t *src, ptrdiff_t src_linesize,
+ uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float f);
+} DeflickerContext;
+
+#define OFFSET(x) offsetof(DeflickerContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption deflicker_options[] = {
+ { "size", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
+ { "s", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
+ { "mode", "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
+ { "m", "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
+ { "am", "arithmetic mean", 0, AV_OPT_TYPE_CONST, {.i64=ARITHMETIC_MEAN}, 0, 0, FLAGS, "mode" },
+ { "gm", "geometric mean", 0, AV_OPT_TYPE_CONST, {.i64=GEOMETRIC_MEAN}, 0, 0, FLAGS, "mode" },
+ { "hm", "harmonic mean", 0, AV_OPT_TYPE_CONST, {.i64=HARMONIC_MEAN}, 0, 0, FLAGS, "mode" },
+ { "qm", "quadratic mean", 0, AV_OPT_TYPE_CONST, {.i64=QUADRATIC_MEAN}, 0, 0, FLAGS, "mode" },
+ { "cm", "cubic mean", 0, AV_OPT_TYPE_CONST, {.i64=CUBIC_MEAN}, 0, 0, FLAGS, "mode" },
+ { "pm", "power mean", 0, AV_OPT_TYPE_CONST, {.i64=POWER_MEAN}, 0, 0, FLAGS, "mode" },
+ { "median", "median", 0, AV_OPT_TYPE_CONST, {.i64=MEDIAN}, 0, 0, FLAGS, "mode" },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(deflicker);
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum AVPixelFormat pixel_fmts[] = {
+ AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10,
+ AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
+ 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_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
+ AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
+ AV_PIX_FMT_YUV440P10,
+ AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
+ AV_PIX_FMT_YUV440P12,
+ AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
+ AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
+ 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 int deflicker8(AVFilterContext *ctx,
+ const uint8_t *src, ptrdiff_t src_linesize,
+ uint8_t *dst, ptrdiff_t dst_linesize,
+ int w, int h, float f)
+{
+ int x, y;
+
+ for (y = 0; y < h; y++) {
+ for (x = 0; x < w; x++) {
+ dst[x] = av_clip_uint8(src[x] * f);
+ }
+
+ dst += dst_linesize;
+ src += src_linesize;
+ }
+
+ return 0;
+}
+
+static int deflicker16(AVFilterContext *ctx,
+ const uint8_t *ssrc, ptrdiff_t src_linesize,
+ uint8_t *ddst, ptrdiff_t dst_linesize,
+ int w, int h, float f)
+{
+ DeflickerContext *s = ctx->priv;
+ const uint16_t *src = (const uint16_t *)ssrc;
+ uint16_t *dst = (uint16_t *)ddst;
+ const int max = (1 << s->depth) - 1;
+ int x, y;
+
+ for (y = 0; y < h; y++) {
+ for (x = 0; x < w; x++) {
+ dst[x] = av_clip(src[x] * f, 0, max);
+ }
+
+ dst += dst_linesize / 2;
+ src += src_linesize / 2;
+ }
+
+ return 0;
+}
+
+static float calc_avgy8(AVFilterContext *ctx, AVFrame *in)
+{
+ DeflickerContext *s = ctx->priv;
+ const uint8_t *src = in->data[0];
+ int64_t sum = 0;
+ int y, x;
+
+ memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
+
+ for (y = 0; y < s->planeheight[0]; y++) {
+ for (x = 0; x < s->planewidth[0]; x++) {
+ s->histogram[src[x]]++;
+ }
+ src += in->linesize[0];
+ }
+
+ for (y = 0; y < 1 << s->depth; y++) {
+ sum += s->histogram[y] * y;
+ }
+
+ return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
+}
+
+static float calc_avgy16(AVFilterContext *ctx, AVFrame *in)
+{
+ DeflickerContext *s = ctx->priv;
+ const uint16_t *src = (const uint16_t *)in->data[0];
+ int64_t sum = 0;
+ int y, x;
+
+ memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
+
+ for (y = 0; y < s->planeheight[0]; y++) {
+ for (x = 0; x < s->planewidth[0]; x++) {
+ s->histogram[src[x]]++;
+ }
+ src += in->linesize[0] / 2;
+ }
+
+ for (y = 0; y < 1 << s->depth; y++) {
+ sum += s->histogram[y] * y;
+ }
+
+ return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
+}
+
+static void get_am_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+ int y;
+
+ *f = 0.0f;
+
+ for (y = 0; y < s->size; y++) {
+ *f += s->luminance[y];
+ }
+
+ *f /= s->size;
+ *f /= s->luminance[0];
+}
+
+static void get_gm_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+ int y;
+
+ *f = 1;
+
+ for (y = 0; y < s->size; y++) {
+ *f *= s->luminance[y];
+ }
+
+ *f = pow(*f, 1.0f / s->size);
+ *f /= s->luminance[0];
+}
+
+static void get_hm_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+ int y;
+
+ *f = 0.0f;
+
+ for (y = 0; y < s->size; y++) {
+ *f += 1.0f / s->luminance[y];
+ }
+
+ *f = s->size / *f;
+ *f /= s->luminance[0];
+}
+
+static void get_qm_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+ int y;
+
+ *f = 0.0f;
+
+ for (y = 0; y < s->size; y++) {
+ *f += s->luminance[y] * s->luminance[y];
+ }
+
+ *f /= s->size;
+ *f = sqrtf(*f);
+ *f /= s->luminance[0];
+}
+
+static void get_cm_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+ int y;
+
+ *f = 0.0f;
+
+ for (y = 0; y < s->size; y++) {
+ *f += s->luminance[y] * s->luminance[y] * s->luminance[y];
+ }
+
+ *f /= s->size;
+ *f = cbrtf(*f);
+ *f /= s->luminance[0];
+}
+
+static void get_pm_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+ int y;
+
+ *f = 0.0f;
+
+ for (y = 0; y < s->size; y++) {
+ *f += powf(s->luminance[y], s->size);
+ }
+
+ *f /= s->size;
+ *f = powf(*f, 1.0f / s->size);
+ *f /= s->luminance[0];
+}
+
+static int comparef(const void *a, const void *b)
+{
+ const float *aa = a, *bb = b;
+ return round(aa - bb);
+}
+
+static void get_median_factor(AVFilterContext *ctx, float *f)
+{
+ DeflickerContext *s = ctx->priv;
+
+ memcpy(s->sorted, s->luminance, sizeof(s->sorted));
+ AV_QSORT(s->sorted, s->size, float, comparef);
+
+ *f = s->sorted[s->size >> 1] / s->luminance[0];
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ AVFilterContext *ctx = inlink->dst;
+ DeflickerContext *s = ctx->priv;
+
+ s->nb_planes = desc->nb_components;
+
+ s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
+ s->planeheight[0] = s->planeheight[3] = inlink->h;
+ s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
+ s->planewidth[0] = s->planewidth[3] = inlink->w;
+
+ s->depth = desc->comp[0].depth;
+ if (s->depth == 8) {
+ s->deflicker = deflicker8;
+ s->calc_avgy = calc_avgy8;
+ } else {
+ s->deflicker = deflicker16;
+ s->calc_avgy = calc_avgy16;
+ }
+
+ s->histogram = av_calloc(1 << s->depth, sizeof(*s->histogram));
+ if (!s->histogram)
+ return AVERROR(ENOMEM);
+
+ switch (s->mode) {
+ case MEDIAN: s->get_factor = get_median_factor; break;
+ case ARITHMETIC_MEAN: s->get_factor = get_am_factor; break;
+ case GEOMETRIC_MEAN: s->get_factor = get_gm_factor; break;
+ case HARMONIC_MEAN: s->get_factor = get_hm_factor; break;
+ case QUADRATIC_MEAN: s->get_factor = get_qm_factor; break;
+ case CUBIC_MEAN: s->get_factor = get_cm_factor; break;
+ case POWER_MEAN: s->get_factor = get_pm_factor; break;
+ }
+
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
+{
+ AVFilterContext *ctx = inlink->dst;
+ AVFilterLink *outlink = ctx->outputs[0];
+ DeflickerContext *s = ctx->priv;
+ AVDictionary **metadata;
+ AVFrame *out, *in;
+ float f;
+ int y;
+
+ if (s->q.available < s->size && !s->eof) {
+ s->luminance[s->available] = s->calc_avgy(ctx, buf);
+ ff_bufqueue_add(ctx, &s->q, buf);
+ s->available++;
+ return 0;
+ }
+
+ in = ff_bufqueue_peek(&s->q, 0);
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&buf);
+ return AVERROR(ENOMEM);
+ }
+
+ s->get_factor(ctx, &f);
+ s->deflicker(ctx, in->data[0], in->linesize[0], out->data[0], out->linesize[0],
+ outlink->w, outlink->h, f);
+ for (y = 1; y < s->nb_planes; y++) {
+ av_image_copy_plane(out->data[y], out->linesize[y],
+ in->data[y], in->linesize[y],
+ s->planewidth[y] * (1 + (s->depth > 8)), s->planeheight[y]);
+ }
+
+ av_frame_copy_props(out, in);
+ metadata = avpriv_frame_get_metadatap(out);
+ if (metadata) {
+ uint8_t value[128];
+
+ snprintf(value, sizeof(value), "%f", s->luminance[0]);
+ av_dict_set(metadata, "lavfi.deflicker.luminance", value, 0);
+
+ snprintf(value, sizeof(value), "%f", s->luminance[0] * f);
+ av_dict_set(metadata, "lavfi.deflicker.new_luminance", value, 0);
+
+ snprintf(value, sizeof(value), "%f", f - 1.0f);
+ av_dict_set(metadata, "lavfi.deflicker.relative_change", value, 0);
+ }
+
+ in = ff_bufqueue_get(&s->q);
+ av_frame_free(&in);
+ memmove(&s->luminance[0], &s->luminance[1], sizeof(*s->luminance) * (s->size - 1));
+ s->luminance[s->available - 1] = s->calc_avgy(ctx, buf);
+ ff_bufqueue_add(ctx, &s->q, buf);
+
+ return ff_filter_frame(outlink, out);
+}
+
+static int request_frame(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ DeflickerContext *s = ctx->priv;
+ int ret;
+
+ ret = ff_request_frame(ctx->inputs[0]);
+ if (ret == AVERROR_EOF && s->available > 0) {
+ AVFrame *buf = av_frame_clone(ff_bufqueue_peek(&s->q, s->size - 1));
+ if (!buf)
+ return AVERROR(ENOMEM);
+
+ s->eof = 1;
+ ret = filter_frame(ctx->inputs[0], buf);
+ s->available--;
+ }
+
+ return ret;
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ DeflickerContext *s = ctx->priv;
+
+ ff_bufqueue_discard_all(&s->q);
+ av_freep(&s->histogram);
+}
+
+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,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_deflicker = {
+ .name = "deflicker",
+ .description = NULL_IF_CONFIG_SMALL("Remove temporal frame luminance variations."),
+ .priv_size = sizeof(DeflickerContext),
+ .priv_class = &deflicker_class,
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = inputs,
+ .outputs = outputs,
+};
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