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avfilter: add waveform monitor filter
This commit is contained in:
Paul B Mahol
parent
e95193f5ea
commit
14f97bb2bc
@ -33,6 +33,7 @@ version <next>:
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- aphasemeter filter
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- showfreqs filter
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- vectorscope filter
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- waveform filter
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version 2.7:
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@ -10927,6 +10927,82 @@ Only deinterlace frames marked as interlaced.
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Default value is @samp{all}.
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@end table
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@section waveform
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Video waveform monitor.
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The waveform monitor plots color component intensity. By default luminance
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only. Each column of the waveform corresponds to a column of pixels in the
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source video.
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It accepts the following options:
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@table @option
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@item mode, m
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Can be either @code{row}, or @code{column}. Default is @code{column}.
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In row mode, the graph on the left side represents color component value 0 and
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the right side represents value = 255. In column mode, the top side represents
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color component value = 0 and bottom side represents value = 255.
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@item intensity, i
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Set intensity. Smaller values are useful to find out how many values of the same
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luminance are distributed across input rows/columns.
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Default value is @code{10}. Allowed range is [1, 255].
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@item mirror, r
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Set mirroring mode. @code{0} means unmirrored, @code{1} means mirrored.
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In mirrored mode, higher values will be represented on the left
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side for @code{row} mode and at the top for @code{column} mode. Default is
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@code{1} (mirrored).
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@item display, d
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Set display mode.
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It accepts the following values:
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@table @samp
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@item overlay
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Presents information identical to that in the @code{parade}, except
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that the graphs representing color components are superimposed directly
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over one another.
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This display mode makes it easier to spot relative differences or similarities
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in overlapping areas of the color components that are supposed to be identical,
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such as neutral whites, grays, or blacks.
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@item parade
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Display separate graph for the color components side by side in
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@code{row} mode or one below the other in @code{column} mode.
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Using this display mode makes it easy to spot color casts in the highlights
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and shadows of an image, by comparing the contours of the top and the bottom
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graphs of each waveform. Since whites, grays, and blacks are characterized
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by exactly equal amounts of red, green, and blue, neutral areas of the picture
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should display three waveforms of roughly equal width/height. If not, the
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correction is easy to perform by making level adjustments the three waveforms.
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@end table
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Default is @code{parade}.
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@item components, c
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Set which color components to display. Default is 1, which means only luminance
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or red color component if input is in RGB colorspace. If is set for example to
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7 it will display all 3 (if) available color components.
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@item envelope, e
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@table @samp
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@item none
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No envelope, this is default.
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@item instant
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Instant envelope, minimum and maximum values presented in graph will be easily
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visible even with small @code{step} value.
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@item peak
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Hold minimum and maximum values presented in graph across time. This way you
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can still spot out of range values without constantly looking at waveforms.
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@item peak+instant
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Peak and instant envelope combined together.
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@end table
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@end table
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@section xbr
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Apply the xBR high-quality magnification filter which is designed for pixel
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art. It follows a set of edge-detection rules, see
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@ -232,6 +232,7 @@ OBJS-$(CONFIG_VIDSTABDETECT_FILTER) += vidstabutils.o vf_vidstabdetect.
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OBJS-$(CONFIG_VIDSTABTRANSFORM_FILTER) += vidstabutils.o vf_vidstabtransform.o
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OBJS-$(CONFIG_VIGNETTE_FILTER) += vf_vignette.o
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OBJS-$(CONFIG_W3FDIF_FILTER) += vf_w3fdif.o
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OBJS-$(CONFIG_WAVEFORM_FILTER) += vf_waveform.o
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OBJS-$(CONFIG_XBR_FILTER) += vf_xbr.o
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OBJS-$(CONFIG_YADIF_FILTER) += vf_yadif.o
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OBJS-$(CONFIG_ZMQ_FILTER) += f_zmq.o
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@ -247,6 +247,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(VIDSTABTRANSFORM, vidstabtransform, vf);
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REGISTER_FILTER(VIGNETTE, vignette, vf);
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REGISTER_FILTER(W3FDIF, w3fdif, vf);
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REGISTER_FILTER(WAVEFORM, waveform, vf);
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REGISTER_FILTER(XBR, xbr, vf);
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REGISTER_FILTER(YADIF, yadif, vf);
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REGISTER_FILTER(ZMQ, zmq, 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 5
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#define LIBAVFILTER_VERSION_MINOR 36
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#define LIBAVFILTER_VERSION_MINOR 37
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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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@ -172,6 +172,7 @@ static int config_output(AVFilterLink *outlink)
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outlink->h = (h->level_height + h->scale_height) * FFMAX(ncomp * h->display_mode, 1);
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break;
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case MODE_WAVEFORM:
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av_log(ctx, AV_LOG_WARNING, "This mode is deprecated, please use waveform filter instead.\n");
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if (h->waveform_mode)
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outlink->h = 256 * FFMAX(h->ncomp * h->display_mode, 1);
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else
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437
libavfilter/vf_waveform.c
Normal file
437
libavfilter/vf_waveform.c
Normal file
@ -0,0 +1,437 @@
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/*
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* Copyright (c) 2012-2015 Paul B Mahol
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* Copyright (c) 2013 Marton Balint
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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/avassert.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixdesc.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 WaveformContext {
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const AVClass *class;
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int mode;
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int ncomp;
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int pcomp;
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const uint8_t *bg_color;
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int intensity;
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int mirror;
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int display;
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int envelope;
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int estart[4];
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int eend[4];
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int *emax[4];
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int *emin[4];
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const AVPixFmtDescriptor *desc;
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} WaveformContext;
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#define OFFSET(x) offsetof(WaveformContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption waveform_options[] = {
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{ "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode" },
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{ "m", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode" },
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{ "row", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
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{ "column", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
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{ "intensity", "set intensity", OFFSET(intensity), AV_OPT_TYPE_INT, {.i64=10}, 1, 255, FLAGS },
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{ "i", "set intensity", OFFSET(intensity), AV_OPT_TYPE_INT, {.i64=10}, 1, 255, FLAGS },
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{ "mirror", "set mirroring", OFFSET(mirror), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS },
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{ "r", "set mirroring", OFFSET(mirror), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS },
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{ "display", "set display mode", OFFSET(display), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "display" },
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{ "d", "set display mode", OFFSET(display), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "display" },
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{ "overlay", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "display" },
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{ "parade", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "display" },
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{ "components", "set components to display", OFFSET(pcomp), AV_OPT_TYPE_INT, {.i64=1}, 1, 15, FLAGS },
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{ "c", "set components to display", OFFSET(pcomp), AV_OPT_TYPE_INT, {.i64=1}, 1, 15, FLAGS },
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{ "envelope", "set envelope to display", OFFSET(envelope), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "envelope" },
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{ "e", "set envelope to display", OFFSET(envelope), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "envelope" },
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{ "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "envelope" },
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{ "instant", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "envelope" },
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{ "peak", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "envelope" },
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{ "peak+instant", NULL, 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "envelope" },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(waveform);
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_NONE
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};
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static int query_formats(AVFilterContext *ctx)
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{
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AVFilterFormats *fmts_list;
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fmts_list = ff_make_format_list(pix_fmts);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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}
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static const uint8_t black_yuva_color[4] = { 0, 127, 127, 255 };
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static const uint8_t black_gbrp_color[4] = { 0, 0, 0, 255 };
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static int config_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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WaveformContext *s = ctx->priv;
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s->desc = av_pix_fmt_desc_get(inlink->format);
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s->ncomp = s->desc->nb_components;
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switch (inlink->format) {
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case AV_PIX_FMT_GBRAP:
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case AV_PIX_FMT_GBRP:
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s->bg_color = black_gbrp_color;
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break;
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default:
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s->bg_color = black_yuva_color;
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}
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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AVFilterLink *inlink = ctx->inputs[0];
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WaveformContext *s = ctx->priv;
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int comp = 0, i, j = 0, p, size, shift;
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for (i = 0; i < s->ncomp; i++) {
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if ((1 << i) & s->pcomp)
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comp++;
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}
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for (p = 0; p < 4; p++) {
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av_freep(&s->emax[p]);
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av_freep(&s->emin[p]);
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}
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if (s->mode) {
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outlink->h = 256 * FFMAX(comp * s->display, 1);
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size = inlink->w * sizeof(int);
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} else {
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outlink->w = 256 * FFMAX(comp * s->display, 1);
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size = inlink->h * sizeof(int);
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}
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for (p = 0; p < 4; p++) {
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const int is_chroma = (p == 1 || p == 2);
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const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
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const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
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const int plane = s->desc->comp[p].plane;
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int offset;
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if (!((1 << p) & s->pcomp))
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continue;
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shift = s->mode ? shift_h : shift_w;
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s->emax[plane] = av_malloc(size);
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s->emin[plane] = av_malloc(size);
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if (!s->emin[plane] || !s->emax[plane])
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return AVERROR(ENOMEM);
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offset = j++ * 256 * s->display;
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s->estart[plane] = offset >> shift;
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s->eend[plane] = (offset + 255) >> shift;
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for (i = 0; i < size / sizeof(int); i++) {
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s->emax[plane][i] = s->estart[plane];
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s->emin[plane][i] = s->eend[plane];
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}
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}
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outlink->sample_aspect_ratio = (AVRational){1,1};
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return 0;
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}
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static void gen_waveform(WaveformContext *s, AVFrame *in, AVFrame *out,
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int component, int intensity, int offset, int col_mode)
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{
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const int plane = s->desc->comp[component].plane;
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const int mirror = s->mirror;
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const int is_chroma = (component == 1 || component == 2);
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const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
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const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
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const int src_linesize = in->linesize[plane];
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const int dst_linesize = out->linesize[plane];
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const int dst_signed_linesize = dst_linesize * (mirror == 1 ? -1 : 1);
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const int max = 255 - intensity;
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const int src_h = FF_CEIL_RSHIFT(in->height, shift_h);
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const int src_w = FF_CEIL_RSHIFT(in->width, shift_w);
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const uint8_t *src_data = in->data[plane];
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uint8_t *dst_data = out->data[plane] + (col_mode ? (offset >> shift_h) * dst_linesize : offset >> shift_w);
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uint8_t * const dst_bottom_line = dst_data + dst_linesize * ((256 >> shift_h) - 1);
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uint8_t * const dst_line = (mirror ? dst_bottom_line : dst_data);
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const uint8_t *p;
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uint8_t *dst;
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int y;
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if (!col_mode && mirror)
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dst_data += 256 >> shift_w;
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for (y = 0; y < src_h; y++) {
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const uint8_t *src_data_end = src_data + src_w;
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dst = dst_line;
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for (p = src_data; p < src_data_end; p++) {
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uint8_t *target;
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if (col_mode) {
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target = dst++ + dst_signed_linesize * (*p >> shift_h);
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} else {
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if (mirror)
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target = dst_data - (*p >> shift_w) - 1;
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else
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target = dst_data + (*p >> shift_w);
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}
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if (*target <= max)
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*target += intensity;
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else
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*target = 255;
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}
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src_data += src_linesize;
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dst_data += dst_linesize;
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}
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}
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static void gen_envelope_instant(WaveformContext *s, AVFrame *out, int component)
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{
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const int plane = s->desc->comp[component].plane;
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const int dst_linesize = out->linesize[plane];
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const uint8_t bg = s->bg_color[plane];
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const int is_chroma = (component == 1 || component == 2);
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const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
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const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
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const int dst_h = FF_CEIL_RSHIFT(out->height, shift_h);
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const int dst_w = FF_CEIL_RSHIFT(out->width, shift_w);
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const int start = s->estart[plane];
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const int end = s->eend[plane];
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uint8_t *dst;
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int x, y;
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if (!s->mode) {
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for (y = 0; y < dst_h; y++) {
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dst = out->data[plane] + y * dst_linesize;
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for (x = start; x < end; x++) {
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if (dst[x] != bg) {
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dst[x] = 255;
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break;
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}
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}
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for (x = end - 1; x >= start; x--) {
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if (dst[x] != bg) {
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dst[x] = 255;
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break;
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}
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}
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}
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} else {
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for (x = 0; x < dst_w; x++) {
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for (y = start; y < end; y++) {
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dst = out->data[plane] + y * dst_linesize + x;
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if (dst[0] != bg) {
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dst[0] = 255;
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break;
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}
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}
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for (y = end - 1; y >= start; y--) {
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dst = out->data[plane] + y * dst_linesize + x;
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if (dst[0] != bg) {
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dst[0] = 255;
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break;
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}
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}
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}
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}
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}
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static void gen_envelope_peak(WaveformContext *s, AVFrame *out, int component)
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{
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const int plane = s->desc->comp[component].plane;
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const int dst_linesize = out->linesize[plane];
|
||||
const uint8_t bg = s->bg_color[plane];
|
||||
const int is_chroma = (component == 1 || component == 2);
|
||||
const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
|
||||
const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
|
||||
const int dst_h = FF_CEIL_RSHIFT(out->height, shift_h);
|
||||
const int dst_w = FF_CEIL_RSHIFT(out->width, shift_w);
|
||||
const int start = s->estart[plane];
|
||||
const int end = s->eend[plane];
|
||||
int *emax = s->emax[plane];
|
||||
int *emin = s->emin[plane];
|
||||
uint8_t *dst;
|
||||
int x, y;
|
||||
|
||||
if (!s->mode) {
|
||||
for (y = 0; y < dst_h; y++) {
|
||||
dst = out->data[plane] + y * dst_linesize;
|
||||
for (x = start; x < end && x < emin[y]; x++) {
|
||||
if (dst[x] != bg) {
|
||||
emin[y] = x;
|
||||
break;
|
||||
}
|
||||
}
|
||||
for (x = end - 1; x >= start && x >= emax[y]; x--) {
|
||||
if (dst[x] != bg) {
|
||||
emax[y] = x;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (s->envelope == 3)
|
||||
gen_envelope_instant(s, out, component);
|
||||
|
||||
for (y = 0; y < dst_h; y++) {
|
||||
dst = out->data[plane] + y * dst_linesize + emin[y];
|
||||
dst[0] = 255;
|
||||
dst = out->data[plane] + y * dst_linesize + emax[y];
|
||||
dst[0] = 255;
|
||||
}
|
||||
} else {
|
||||
for (x = 0; x < dst_w; x++) {
|
||||
for (y = start; y < end && y < emin[x]; y++) {
|
||||
dst = out->data[plane] + y * dst_linesize + x;
|
||||
if (dst[0] != bg) {
|
||||
emin[x] = y;
|
||||
break;
|
||||
}
|
||||
}
|
||||
for (y = end - 1; y >= start && y >= emax[x]; y--) {
|
||||
dst = out->data[plane] + y * dst_linesize + x;
|
||||
if (dst[0] != bg) {
|
||||
emax[x] = y;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (s->envelope == 3)
|
||||
gen_envelope_instant(s, out, component);
|
||||
|
||||
for (x = 0; x < dst_w; x++) {
|
||||
dst = out->data[plane] + emin[x] * dst_linesize + x;
|
||||
dst[0] = 255;
|
||||
dst = out->data[plane] + emax[x] * dst_linesize + x;
|
||||
dst[0] = 255;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void gen_envelope(WaveformContext *s, AVFrame *out, int component)
|
||||
{
|
||||
if (s->envelope == 0) {
|
||||
return;
|
||||
} else if (s->envelope == 1) {
|
||||
gen_envelope_instant(s, out, component);
|
||||
} else {
|
||||
gen_envelope_peak(s, out, component);
|
||||
}
|
||||
}
|
||||
|
||||
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
||||
{
|
||||
AVFilterContext *ctx = inlink->dst;
|
||||
WaveformContext *s = ctx->priv;
|
||||
AVFilterLink *outlink = ctx->outputs[0];
|
||||
AVFrame *out;
|
||||
int i, k;
|
||||
|
||||
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
||||
if (!out) {
|
||||
av_frame_free(&in);
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
out->pts = in->pts;
|
||||
|
||||
for (k = 0; k < s->ncomp; k++) {
|
||||
const int is_chroma = (k == 1 || k == 2);
|
||||
const int dst_h = FF_CEIL_RSHIFT(outlink->h, (is_chroma ? s->desc->log2_chroma_h : 0));
|
||||
const int dst_w = FF_CEIL_RSHIFT(outlink->w, (is_chroma ? s->desc->log2_chroma_w : 0));
|
||||
for (i = 0; i < dst_h ; i++)
|
||||
memset(out->data[s->desc->comp[k].plane] +
|
||||
i * out->linesize[s->desc->comp[k].plane],
|
||||
s->bg_color[k], dst_w);
|
||||
}
|
||||
|
||||
for (k = 0, i = 0; k < s->ncomp; k++) {
|
||||
if ((1 << k) & s->pcomp) {
|
||||
const int offset = i++ * 256 * s->display;
|
||||
gen_waveform(s, in, out, k, s->intensity, offset, s->mode);
|
||||
gen_envelope(s, out, k);
|
||||
}
|
||||
}
|
||||
|
||||
av_frame_free(&in);
|
||||
return ff_filter_frame(outlink, out);
|
||||
}
|
||||
|
||||
static av_cold void uninit(AVFilterContext *ctx)
|
||||
{
|
||||
WaveformContext *s = ctx->priv;
|
||||
int p;
|
||||
|
||||
for (p = 0; p < 4; p++) {
|
||||
av_freep(&s->emax[p]);
|
||||
av_freep(&s->emin[p]);
|
||||
}
|
||||
}
|
||||
|
||||
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,
|
||||
.config_props = config_output,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
AVFilter ff_vf_waveform = {
|
||||
.name = "waveform",
|
||||
.description = NULL_IF_CONFIG_SMALL("Video waveform monitor."),
|
||||
.priv_size = sizeof(WaveformContext),
|
||||
.priv_class = &waveform_class,
|
||||
.query_formats = query_formats,
|
||||
.uninit = uninit,
|
||||
.inputs = inputs,
|
||||
.outputs = outputs,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user