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avfilter: add signalstats filter
Signed-off-by: Mark Heath <silicontrip@gmail.com> Signed-off-by: Dave Rice <dave@dericed.com> Signed-off-by: Clément Bœsch <u@pkh.me>
This commit is contained in:
Clément Bœsch
parent
881ee369e6
commit
76bce46d8f
@ -28,6 +28,7 @@ version <next>:
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- WebVTT encoder
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- showcqt multimedia filter
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- zoompan filter
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- signalstats filter
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version 2.2:
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166
doc/filters.texi
166
doc/filters.texi
@ -7532,6 +7532,172 @@ Swap the second and third planes of the input:
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ffmpeg -i INPUT -vf shuffleplanes=0:2:1:3 OUTPUT
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@end example
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@section signalstats
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Evaluate various visual metrics that assist in determining issues associated
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with the digitization of analog video media.
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By default the filter will log these metadata values:
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@table @option
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@item YMIN
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Display the minimal Y value contained within the input frame. Expressed in
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range of [0-255].
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@item YLOW
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Display the Y value at the 10% percentile within the input frame. Expressed in
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range of [0-255].
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@item YAVG
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Display the average Y value within the input frame. Expressed in range of
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[0-255].
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@item YHIGH
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Display the Y value at the 90% percentile within the input frame. Expressed in
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range of [0-255].
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@item YMAX
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Display the maximum Y value contained within the input frame. Expressed in
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range of [0-255].
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@item UMIN
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Display the minimal U value contained within the input frame. Expressed in
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range of [0-255].
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@item ULOW
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Display the U value at the 10% percentile within the input frame. Expressed in
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range of [0-255].
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@item UAVG
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Display the average U value within the input frame. Expressed in range of
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[0-255].
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@item UHIGH
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Display the U value at the 90% percentile within the input frame. Expressed in
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range of [0-255].
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@item UMAX
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Display the maximum U value contained within the input frame. Expressed in
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range of [0-255].
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@item VMIN
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Display the minimal V value contained within the input frame. Expressed in
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range of [0-255].
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@item VLOW
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Display the V value at the 10% percentile within the input frame. Expressed in
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range of [0-255].
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@item VAVG
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Display the average V value within the input frame. Expressed in range of
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[0-255].
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@item VHIGH
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Display the V value at the 90% percentile within the input frame. Expressed in
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range of [0-255].
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@item VMAX
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Display the maximum V value contained within the input frame. Expressed in
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range of [0-255].
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@item SATMIN
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Display the minimal saturation value contained within the input frame.
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Expressed in range of [0-~181.02].
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@item SATLOW
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Display the saturation value at the 10% percentile within the input frame.
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Expressed in range of [0-~181.02].
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@item SATAVG
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Display the average saturation value within the input frame. Expressed in range
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of [0-~181.02].
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@item SATHIGH
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Display the saturation value at the 90% percentile within the input frame.
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Expressed in range of [0-~181.02].
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@item SATMAX
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Display the maximum saturation value contained within the input frame.
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Expressed in range of [0-~181.02].
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@item HUEMED
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Display the median value for hue within the input frame. Expressed in range of
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[0-360].
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@item HUEAVG
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Display the average value for hue within the input frame. Expressed in range of
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[0-360].
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@item YDIF
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Display the average of sample value difference between all values of the Y
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plane in the current frame and corresponding values of the previous input frame.
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Expressed in range of [0-255].
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@item UDIF
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Display the average of sample value difference between all values of the U
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plane in the current frame and corresponding values of the previous input frame.
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Expressed in range of [0-255].
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@item VDIF
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Display the average of sample value difference between all values of the V
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plane in the current frame and corresponding values of the previous input frame.
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Expressed in range of [0-255].
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@end table
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The filter accepts the following options:
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@table @option
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@item stat
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@item out
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@option{stat} specify an additional form of image analysis.
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@option{out} output video with the specified type of pixel highlighted.
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Both options accept the following values:
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@table @samp
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@item tout
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Identify @var{temporal outliers} pixels. A @var{temporal outlier} is a pixel
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unlike the neighboring pixels of the same field. Examples of temporal outliers
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include the results of video dropouts, head clogs, or tape tracking issues.
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@item vrep
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Identify @var{vertical line repetition}. Vertical line repetition includes
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similar rows of pixels within a frame. In born-digital video vertical line
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repetition is common, but this pattern is uncommon in video digitized from an
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analog source. When it occurs in video that results from the digitization of an
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analog source it can indicate concealment from a dropout compensator.
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@item brng
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Identify pixels that fall outside of legal broadcast range.
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@end table
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@item color, c
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Set the highlight color for the @option{out} option. The default color is
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yellow.
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@end table
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@subsection Examples
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@itemize
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@item
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Output data of various video metrics:
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@example
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ffprobe -f lavfi movie=example.mov,signalstats="stat=tout+vrep+brng" -show_frames
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@end example
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@item
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Output specific data about the minimum and maximum values of the Y plane per frame:
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@example
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ffprobe -f lavfi movie=example.mov,signalstats -show_entries frame_tags=lavfi.signalstats.YMAX,lavfi.signalstats.YMIN
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@end example
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@item
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Playback video while highlighting pixels that are outside of broadcast range in red.
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@example
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ffplay example.mov -vf values="out=brng:color=red"
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@end example
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@end itemize
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@anchor{smartblur}
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@section smartblur
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@ -174,6 +174,7 @@ OBJS-$(CONFIG_SETSAR_FILTER) += vf_aspect.o
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OBJS-$(CONFIG_SETTB_FILTER) += settb.o
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OBJS-$(CONFIG_SHOWINFO_FILTER) += vf_showinfo.o
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OBJS-$(CONFIG_SHUFFLEPLANES_FILTER) += vf_shuffleplanes.o
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OBJS-$(CONFIG_SIGNALSTATS_FILTER) += vf_signalstats.o
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OBJS-$(CONFIG_SMARTBLUR_FILTER) += vf_smartblur.o
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OBJS-$(CONFIG_SPLIT_FILTER) += split.o
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OBJS-$(CONFIG_SPP_FILTER) += vf_spp.o
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@ -191,6 +191,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(SETTB, settb, vf);
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REGISTER_FILTER(SHOWINFO, showinfo, vf);
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REGISTER_FILTER(SHUFFLEPLANES, shuffleplanes, vf);
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REGISTER_FILTER(SIGNALSTATS, signalstats, vf);
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REGISTER_FILTER(SMARTBLUR, smartblur, vf);
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REGISTER_FILTER(SPLIT, split, vf);
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REGISTER_FILTER(SPP, spp, vf);
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@ -30,7 +30,7 @@
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#include "libavutil/version.h"
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#define LIBAVFILTER_VERSION_MAJOR 4
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#define LIBAVFILTER_VERSION_MINOR 7
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#define LIBAVFILTER_VERSION_MINOR 8
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#define LIBAVFILTER_VERSION_MICRO 100
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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478
libavfilter/vf_signalstats.c
Normal file
478
libavfilter/vf_signalstats.c
Normal file
@ -0,0 +1,478 @@
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/*
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* Copyright (c) 2010 Mark Heath mjpeg0 @ silicontrip dot org
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* Copyright (c) 2014 Clément Bœsch
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* Copyright (c) 2014 Dave Rice @dericed
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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/pixdesc.h"
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#include "internal.h"
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enum FilterMode {
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FILTER_NONE = -1,
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FILTER_TOUT,
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FILTER_VREP,
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FILTER_BRNG,
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FILT_NUMB
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};
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typedef struct {
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const AVClass *class;
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int chromah; // height of chroma plane
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int chromaw; // width of chroma plane
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int hsub; // horizontal subsampling
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int vsub; // vertical subsampling
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int fs; // pixel count per frame
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int cfs; // pixel count per frame of chroma planes
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enum FilterMode outfilter;
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int filters;
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AVFrame *frame_prev;
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char *vrep_line;
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uint8_t rgba_color[4];
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int yuv_color[3];
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} SignalstatsContext;
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#define OFFSET(x) offsetof(SignalstatsContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption signalstats_options[] = {
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{"stat", "set statistics filters", OFFSET(filters), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "filters"},
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{"tout", "analyze pixels for temporal outliers", 0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_TOUT}, 0, 0, FLAGS, "filters"},
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{"vrep", "analyze video lines for vertical line repitition", 0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_VREP}, 0, 0, FLAGS, "filters"},
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{"brng", "analyze for pixels outside of broadcast range", 0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_BRNG}, 0, 0, FLAGS, "filters"},
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{"out", "set video filter", OFFSET(outfilter), AV_OPT_TYPE_INT, {.i64=FILTER_NONE}, -1, FILT_NUMB-1, FLAGS, "out"},
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{"tout", "highlight pixels that depict temporal outliers", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_TOUT}, 0, 0, FLAGS, "out"},
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{"vrep", "highlight video lines that depict vertical line repitition", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_VREP}, 0, 0, FLAGS, "out"},
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{"brng", "highlight pixels that are outside of broadcast range", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_BRNG}, 0, 0, FLAGS, "out"},
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{"c", "set highlight color", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str="yellow"}, .flags=FLAGS},
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{"color", "set highlight color", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str="yellow"}, .flags=FLAGS},
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{NULL}
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};
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AVFILTER_DEFINE_CLASS(signalstats);
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static av_cold int init(AVFilterContext *ctx)
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{
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uint8_t r, g, b;
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SignalstatsContext *s = ctx->priv;
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if (s->outfilter != FILTER_NONE)
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s->filters |= 1 << s->outfilter;
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r = s->rgba_color[0];
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g = s->rgba_color[1];
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b = s->rgba_color[2];
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s->yuv_color[0] = (( 66*r + 129*g + 25*b + (1<<7)) >> 8) + 16;
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s->yuv_color[1] = ((-38*r + -74*g + 112*b + (1<<7)) >> 8) + 128;
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s->yuv_color[2] = ((112*r + -94*g + -18*b + (1<<7)) >> 8) + 128;
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return 0;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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SignalstatsContext *s = ctx->priv;
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av_frame_free(&s->frame_prev);
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av_freep(&s->vrep_line);
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}
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static int query_formats(AVFilterContext *ctx)
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{
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// TODO: add more
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enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_NONE
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};
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ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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return 0;
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}
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static int config_props(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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SignalstatsContext *s = ctx->priv;
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AVFilterLink *inlink = outlink->src->inputs[0];
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
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s->hsub = desc->log2_chroma_w;
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s->vsub = desc->log2_chroma_h;
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outlink->w = inlink->w;
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outlink->h = inlink->h;
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s->chromaw = FF_CEIL_RSHIFT(inlink->w, s->hsub);
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s->chromah = FF_CEIL_RSHIFT(inlink->h, s->vsub);
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s->fs = inlink->w * inlink->h;
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s->cfs = s->chromaw * s->chromah;
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if (s->filters & 1<<FILTER_VREP) {
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s->vrep_line = av_malloc(inlink->h * sizeof(*s->vrep_line));
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if (!s->vrep_line)
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static void burn_frame(SignalstatsContext *s, AVFrame *f, int x, int y)
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{
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const int chromax = x >> s->hsub;
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const int chromay = y >> s->vsub;
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f->data[0][y * f->linesize[0] + x] = s->yuv_color[0];
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f->data[1][chromay * f->linesize[1] + chromax] = s->yuv_color[1];
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f->data[2][chromay * f->linesize[2] + chromax] = s->yuv_color[2];
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}
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static int filter_brng(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
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{
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int x, score = 0;
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const int yc = y >> s->vsub;
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const uint8_t *pluma = &in->data[0][y * in->linesize[0]];
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const uint8_t *pchromau = &in->data[1][yc * in->linesize[1]];
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const uint8_t *pchromav = &in->data[2][yc * in->linesize[2]];
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for (x = 0; x < w; x++) {
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const int xc = x >> s->hsub;
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const int luma = pluma[x];
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const int chromau = pchromau[xc];
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const int chromav = pchromav[xc];
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const int filt = luma < 16 || luma > 235 ||
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chromau < 16 || chromau > 240 ||
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chromav < 16 || chromav > 240;
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score += filt;
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if (out && filt)
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burn_frame(s, out, x, y);
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}
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return score;
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}
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static int filter_tout_outlier(uint8_t x, uint8_t y, uint8_t z)
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{
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return ((abs(x - y) + abs (z - y)) / 2) - abs(z - x) > 4; // make 4 configurable?
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}
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static int filter_tout(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
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{
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const uint8_t *p = in->data[0];
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int lw = in->linesize[0];
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int x, score = 0, filt;
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if (y - 1 < 0 || y + 1 >= h)
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return 0;
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// detect two pixels above and below (to eliminate interlace artefacts)
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// should check that video format is infact interlaced.
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#define FILTER(i, j) \
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filter_tout_outlier(p[(y-j) * lw + x + i], \
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p[ y * lw + x + i], \
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p[(y+j) * lw + x + i])
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#define FILTER3(j) (FILTER(-1, j) && FILTER(0, j) && FILTER(1, j))
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if (y - 2 >= 0 && y + 2 < h) {
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for (x = 1; x < w - 1; x++) {
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filt = FILTER3(2) && FILTER3(1);
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score += filt;
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if (filt && out)
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burn_frame(s, out, x, y);
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}
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} else {
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for (x = 1; x < w - 1; x++) {
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filt = FILTER3(1);
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score += filt;
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if (filt && out)
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burn_frame(s, out, x, y);
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}
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}
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return score;
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}
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#define VREP_START 4
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static void filter_init_vrep(SignalstatsContext *s, const AVFrame *p, int w, int h)
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{
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int i, y;
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int lw = p->linesize[0];
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for (y = VREP_START; y < h; y++) {
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int totdiff = 0;
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int y2lw = (y - VREP_START) * lw;
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int ylw = y * lw;
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for (i = 0; i < w; i++)
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totdiff += abs(p->data[0][y2lw + i] - p->data[0][ylw + i]);
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/* this value should be definable */
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s->vrep_line[y] = totdiff < w;
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}
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}
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static int filter_vrep(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
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{
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int x, score = 0;
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if (y < VREP_START)
|
||||
return 0;
|
||||
|
||||
for (x = 0; x < w; x++) {
|
||||
if (s->vrep_line[y]) {
|
||||
score++;
|
||||
if (out)
|
||||
burn_frame(s, out, x, y);
|
||||
}
|
||||
}
|
||||
return score;
|
||||
}
|
||||
|
||||
static const struct {
|
||||
const char *name;
|
||||
void (*init)(SignalstatsContext *s, const AVFrame *p, int w, int h);
|
||||
int (*process)(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h);
|
||||
} filters_def[] = {
|
||||
{"TOUT", NULL, filter_tout},
|
||||
{"VREP", filter_init_vrep, filter_vrep},
|
||||
{"BRNG", NULL, filter_brng},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
#define DEPTH 256
|
||||
|
||||
static int filter_frame(AVFilterLink *link, AVFrame *in)
|
||||
{
|
||||
SignalstatsContext *s = link->dst->priv;
|
||||
AVFilterLink *outlink = link->dst->outputs[0];
|
||||
AVFrame *out = in;
|
||||
int i, j;
|
||||
int w = 0, cw = 0, // in
|
||||
pw = 0, cpw = 0; // prev
|
||||
int yuv, yuvu, yuvv;
|
||||
int fil;
|
||||
char metabuf[128];
|
||||
unsigned int histy[DEPTH] = {0},
|
||||
histu[DEPTH] = {0},
|
||||
histv[DEPTH] = {0},
|
||||
histhue[360] = {0},
|
||||
histsat[DEPTH] = {0}; // limited to 8 bit data.
|
||||
int miny = -1, minu = -1, minv = -1;
|
||||
int maxy = -1, maxu = -1, maxv = -1;
|
||||
int lowy = -1, lowu = -1, lowv = -1;
|
||||
int highy = -1, highu = -1, highv = -1;
|
||||
int minsat = -1, maxsat = -1, lowsat = -1, highsat = -1;
|
||||
int lowp, highp, clowp, chighp;
|
||||
int accy, accu, accv;
|
||||
int accsat, acchue = 0;
|
||||
int medhue, maxhue;
|
||||
int toty = 0, totu = 0, totv = 0, totsat=0;
|
||||
int tothue = 0;
|
||||
int dify = 0, difu = 0, difv = 0;
|
||||
|
||||
int filtot[FILT_NUMB] = {0};
|
||||
AVFrame *prev;
|
||||
|
||||
if (!s->frame_prev)
|
||||
s->frame_prev = av_frame_clone(in);
|
||||
|
||||
prev = s->frame_prev;
|
||||
|
||||
if (s->outfilter != FILTER_NONE)
|
||||
out = av_frame_clone(in);
|
||||
|
||||
for (fil = 0; fil < FILT_NUMB; fil ++)
|
||||
if ((s->filters & 1<<fil) && filters_def[fil].init)
|
||||
filters_def[fil].init(s, in, link->w, link->h);
|
||||
|
||||
// Calculate luma histogram and difference with previous frame or field.
|
||||
for (j = 0; j < link->h; j++) {
|
||||
for (i = 0; i < link->w; i++) {
|
||||
yuv = in->data[0][w + i];
|
||||
histy[yuv]++;
|
||||
dify += abs(in->data[0][w + i] - prev->data[0][pw + i]);
|
||||
}
|
||||
w += in->linesize[0];
|
||||
pw += prev->linesize[0];
|
||||
}
|
||||
|
||||
// Calculate chroma histogram and difference with previous frame or field.
|
||||
for (j = 0; j < s->chromah; j++) {
|
||||
for (i = 0; i < s->chromaw; i++) {
|
||||
int sat, hue;
|
||||
|
||||
yuvu = in->data[1][cw+i];
|
||||
yuvv = in->data[2][cw+i];
|
||||
histu[yuvu]++;
|
||||
difu += abs(in->data[1][cw+i] - prev->data[1][cpw+i]);
|
||||
histv[yuvv]++;
|
||||
difv += abs(in->data[2][cw+i] - prev->data[2][cpw+i]);
|
||||
|
||||
// int or round?
|
||||
sat = hypot(yuvu - 128, yuvv - 128);
|
||||
histsat[sat]++;
|
||||
hue = floor((180 / M_PI) * atan2f(yuvu-128, yuvv-128) + 180);
|
||||
histhue[hue]++;
|
||||
}
|
||||
cw += in->linesize[1];
|
||||
cpw += prev->linesize[1];
|
||||
}
|
||||
|
||||
for (j = 0; j < link->h; j++) {
|
||||
for (fil = 0; fil < FILT_NUMB; fil ++) {
|
||||
if (s->filters & 1<<fil) {
|
||||
AVFrame *dbg = out != in && s->outfilter == fil ? out : NULL;
|
||||
filtot[fil] += filters_def[fil].process(s, in, dbg, j, link->w, link->h);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// find low / high based on histogram percentile
|
||||
// these only need to be calculated once.
|
||||
|
||||
lowp = lrint(s->fs * 10 / 100.);
|
||||
highp = lrint(s->fs * 90 / 100.);
|
||||
clowp = lrint(s->cfs * 10 / 100.);
|
||||
chighp = lrint(s->cfs * 90 / 100.);
|
||||
|
||||
accy = accu = accv = accsat = 0;
|
||||
for (fil = 0; fil < DEPTH; fil++) {
|
||||
if (miny < 0 && histy[fil]) miny = fil;
|
||||
if (minu < 0 && histu[fil]) minu = fil;
|
||||
if (minv < 0 && histv[fil]) minv = fil;
|
||||
if (minsat < 0 && histsat[fil]) minsat = fil;
|
||||
|
||||
if (histy[fil]) maxy = fil;
|
||||
if (histu[fil]) maxu = fil;
|
||||
if (histv[fil]) maxv = fil;
|
||||
if (histsat[fil]) maxsat = fil;
|
||||
|
||||
toty += histy[fil] * fil;
|
||||
totu += histu[fil] * fil;
|
||||
totv += histv[fil] * fil;
|
||||
totsat += histsat[fil] * fil;
|
||||
|
||||
accy += histy[fil];
|
||||
accu += histu[fil];
|
||||
accv += histv[fil];
|
||||
accsat += histsat[fil];
|
||||
|
||||
if (lowy == -1 && accy >= lowp) lowy = fil;
|
||||
if (lowu == -1 && accu >= clowp) lowu = fil;
|
||||
if (lowv == -1 && accv >= clowp) lowv = fil;
|
||||
if (lowsat == -1 && accsat >= clowp) lowsat = fil;
|
||||
|
||||
if (highy == -1 && accy >= highp) highy = fil;
|
||||
if (highu == -1 && accu >= chighp) highu = fil;
|
||||
if (highv == -1 && accv >= chighp) highv = fil;
|
||||
if (highsat == -1 && accsat >= chighp) highsat = fil;
|
||||
}
|
||||
|
||||
maxhue = histhue[0];
|
||||
medhue = -1;
|
||||
for (fil = 0; fil < 360; fil++) {
|
||||
tothue += histhue[fil] * fil;
|
||||
acchue += histhue[fil];
|
||||
|
||||
if (medhue == -1 && acchue > s->cfs / 2)
|
||||
medhue = fil;
|
||||
if (histhue[fil] > maxhue) {
|
||||
maxhue = histhue[fil];
|
||||
}
|
||||
}
|
||||
|
||||
av_frame_free(&s->frame_prev);
|
||||
s->frame_prev = av_frame_clone(in);
|
||||
|
||||
#define SET_META(key, fmt, val) do { \
|
||||
snprintf(metabuf, sizeof(metabuf), fmt, val); \
|
||||
av_dict_set(&out->metadata, "lavfi.signalstats." key, metabuf, 0); \
|
||||
} while (0)
|
||||
|
||||
SET_META("YMIN", "%d", miny);
|
||||
SET_META("YLOW", "%d", lowy);
|
||||
SET_META("YAVG", "%g", 1.0 * toty / s->fs);
|
||||
SET_META("YHIGH", "%d", highy);
|
||||
SET_META("YMAX", "%d", maxy);
|
||||
|
||||
SET_META("UMIN", "%d", minu);
|
||||
SET_META("ULOW", "%d", lowu);
|
||||
SET_META("UAVG", "%g", 1.0 * totu / s->cfs);
|
||||
SET_META("UHIGH", "%d", highu);
|
||||
SET_META("UMAX", "%d", maxu);
|
||||
|
||||
SET_META("VMIN", "%d", minv);
|
||||
SET_META("VLOW", "%d", lowv);
|
||||
SET_META("VAVG", "%g", 1.0 * totv / s->cfs);
|
||||
SET_META("VHIGH", "%d", highv);
|
||||
SET_META("VMAX", "%d", maxv);
|
||||
|
||||
SET_META("SATMIN", "%d", minsat);
|
||||
SET_META("SATLOW", "%d", lowsat);
|
||||
SET_META("SATAVG", "%g", 1.0 * totsat / s->cfs);
|
||||
SET_META("SATHIGH", "%d", highsat);
|
||||
SET_META("SATMAX", "%d", maxsat);
|
||||
|
||||
SET_META("HUEMED", "%d", medhue);
|
||||
SET_META("HUEAVG", "%g", 1.0 * tothue / s->cfs);
|
||||
|
||||
SET_META("YDIF", "%g", 1.0 * dify / s->fs);
|
||||
SET_META("UDIF", "%g", 1.0 * difu / s->cfs);
|
||||
SET_META("VDIF", "%g", 1.0 * difv / s->cfs);
|
||||
|
||||
for (fil = 0; fil < FILT_NUMB; fil ++) {
|
||||
if (s->filters & 1<<fil) {
|
||||
char metaname[128];
|
||||
snprintf(metabuf, sizeof(metabuf), "%g", 1.0 * filtot[fil] / s->fs);
|
||||
snprintf(metaname, sizeof(metaname), "lavfi.signalstats.%s", filters_def[fil].name);
|
||||
av_dict_set(&out->metadata, metaname, metabuf, 0);
|
||||
}
|
||||
}
|
||||
|
||||
if (in != out)
|
||||
av_frame_free(&in);
|
||||
return ff_filter_frame(outlink, out);
|
||||
}
|
||||
|
||||
static const AVFilterPad signalstats_inputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static const AVFilterPad signalstats_outputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.config_props = config_props,
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
AVFilter ff_vf_signalstats = {
|
||||
.name = "signalstats",
|
||||
.description = "Generate statistics from video analysis.",
|
||||
.init = init,
|
||||
.uninit = uninit,
|
||||
.query_formats = query_formats,
|
||||
.priv_size = sizeof(SignalstatsContext),
|
||||
.inputs = signalstats_inputs,
|
||||
.outputs = signalstats_outputs,
|
||||
.priv_class = &signalstats_class,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user