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https://github.com/FFmpeg/FFmpeg.git
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lavfi: port MP il filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
parent
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@ -15,6 +15,7 @@ version <next>:
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- improved showspectrum filter, with multichannel support and sox-like colors
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- improved showspectrum filter, with multichannel support and sox-like colors
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- histogram filter
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- histogram filter
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- tee muxer
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- tee muxer
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- il filter ported from libmpcodecs
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version 1.1:
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version 1.1:
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@ -4648,6 +4648,43 @@ Useful for enlarging pixel art images without reducing sharpness.
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@section swapuv
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@section swapuv
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Swap U & V plane.
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Swap U & V plane.
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@section il
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Deinterleave or interleave fields.
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This filter allows to process interlaced images fields without
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deinterlacing them. Deinterleaving splits the input frame into 2
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fields (so called half pictures). Odd lines are moved to the top
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half of the output image, even lines to the bottom half.
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You can process (filter) them independently and then re-interleave them.
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It accepts a list of options in the form of @var{key}=@var{value} pairs
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separated by ":". A description of the accepted options follows.
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@table @option
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@item luma_mode, l
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@item chroma_mode, s
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@item alpha_mode, a
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Available values for @var{luma_mode}, @var{chroma_mode} and
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@var{alpha_mode} are:
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@table @samp
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@item none
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Do nothing.
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@item deinterleave, d
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Deinterleave fields, placing one above the other.
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@item interleave, i
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Interleave fields. Reversing effect of deinterleave.
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@end table
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Default value is @code{none}.
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@item luma_swap, ls
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@item chroma_swap, cs
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@item alpha_swap, as
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Swap luma/chroma/alpha fields. Exchange even & odd lines. Default value is @code{0}.
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@end table
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@section thumbnail
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@section thumbnail
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Select the most representative frame in a given sequence of consecutive frames.
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Select the most representative frame in a given sequence of consecutive frames.
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@ -126,6 +126,7 @@ OBJS-$(CONFIG_HISTOGRAM_FILTER) += vf_histogram.o
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OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
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OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
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OBJS-$(CONFIG_HUE_FILTER) += vf_hue.o
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OBJS-$(CONFIG_HUE_FILTER) += vf_hue.o
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OBJS-$(CONFIG_IDET_FILTER) += vf_idet.o
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OBJS-$(CONFIG_IDET_FILTER) += vf_idet.o
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OBJS-$(CONFIG_IL_FILTER) += vf_il.o
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OBJS-$(CONFIG_KERNDEINT_FILTER) += vf_kerndeint.o
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OBJS-$(CONFIG_KERNDEINT_FILTER) += vf_kerndeint.o
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OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o
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OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o
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OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o
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OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o
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@ -120,6 +120,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(HQDN3D, hqdn3d, vf);
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REGISTER_FILTER(HQDN3D, hqdn3d, vf);
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REGISTER_FILTER(HUE, hue, vf);
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REGISTER_FILTER(HUE, hue, vf);
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REGISTER_FILTER(IDET, idet, vf);
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REGISTER_FILTER(IDET, idet, vf);
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REGISTER_FILTER(IL, il, vf);
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REGISTER_FILTER(KERNDEINT, kerndeint, vf);
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REGISTER_FILTER(KERNDEINT, kerndeint, vf);
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REGISTER_FILTER(LUT, lut, vf);
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REGISTER_FILTER(LUT, lut, vf);
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REGISTER_FILTER(LUTRGB, lutrgb, vf);
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REGISTER_FILTER(LUTRGB, lutrgb, vf);
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@ -29,7 +29,7 @@
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#include "libavutil/avutil.h"
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#include "libavutil/avutil.h"
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#define LIBAVFILTER_VERSION_MAJOR 3
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#define LIBAVFILTER_VERSION_MAJOR 3
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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_MICRO 100
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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236
libavfilter/vf_il.c
Normal file
236
libavfilter/vf_il.c
Normal file
@ -0,0 +1,236 @@
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/*
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* Copyright (c) 2002 Michael Niedmayer
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* Copyright (c) 2013 Paul B Mahol
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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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/**
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* @file
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* (de)interleave fields filter
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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 "avfilter.h"
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#include "internal.h"
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enum FilterMode {
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MODE_NONE,
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MODE_INTERLEAVE,
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MODE_DEINTERLEAVE
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};
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typedef struct {
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const AVClass *class;
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enum FilterMode luma_mode, chroma_mode, alpha_mode;
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int luma_swap, chroma_swap, alpha_swap;
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int nb_planes;
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int chroma_width, chroma_height;
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int width;
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} IlContext;
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#define OFFSET(x) offsetof(IlContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption il_options[] = {
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{"luma_mode", "select luma mode", OFFSET(luma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "luma_mode"},
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{"l", "select luma mode", OFFSET(luma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "luma_mode"},
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{"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "luma_mode"},
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{"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
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{"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
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{"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
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{"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
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{"chroma_mode", "select chroma mode", OFFSET(chroma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "chroma_mode"},
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{"c", "select chroma mode", OFFSET(chroma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "chroma_mode"},
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{"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "chroma_mode"},
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{"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
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{"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
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{"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
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{"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
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{"alpha_mode", "select alpha mode", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "alpha_mode"},
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{"a", "select alpha mode", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "alpha_mode"},
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{"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "alpha_mode"},
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{"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
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{"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
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{"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
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{"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
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{"luma_swap", "swap luma fields", OFFSET(luma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
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{"ls", "swap luma fields", OFFSET(luma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
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{"chroma_swap", "swap chroma fields", OFFSET(chroma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
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{"cs", "swap chroma fields", OFFSET(chroma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
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{"alpha_swap", "swap alpha fields", OFFSET(alpha_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
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{"as", "swap alpha fields", OFFSET(alpha_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
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{NULL}
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};
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AVFILTER_DEFINE_CLASS(il);
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static av_cold int init(AVFilterContext *ctx, const char *args)
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{
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IlContext *il = ctx->priv;
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int ret;
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il->class = &il_class;
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av_opt_set_defaults(il);
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if ((ret = av_set_options_string(il, args, "=", ":")) < 0)
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return ret;
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return 0;
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}
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static int config_input(AVFilterLink *inlink)
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{
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IlContext *il = inlink->dst->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int bpp = av_get_padded_bits_per_pixel(desc) >> 3;
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int bytes = FFALIGN(desc->comp[0].depth_minus1 + 1, 8) / 8;
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int i;
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for (i = 0; i < desc->nb_components; i++)
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il->nb_planes = FFMAX(il->nb_planes, desc->comp[i].plane);
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il->nb_planes++;
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il->chroma_height = inlink->h >> desc->log2_chroma_h;
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il->chroma_width = (inlink->w >> desc->log2_chroma_w) * bytes;
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il->width = inlink->w * bytes;
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if (!(desc->flags & PIX_FMT_PLANAR))
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il->width *= bpp;
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return 0;
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}
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static void interleave(uint8_t *dst, uint8_t *src, int w, int h,
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int dst_linesize, int src_linesize,
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enum FilterMode mode, int swap)
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{
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const int a = swap;
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const int b = 1 - a;
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const int m = h >> 1;
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int y;
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switch (mode) {
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case MODE_DEINTERLEAVE:
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for (y = 0; y < m; y++) {
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memcpy(dst + dst_linesize * y , src + src_linesize * (y * 2 + a), w);
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memcpy(dst + dst_linesize * (y + m), src + src_linesize * (y * 2 + b), w);
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}
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break;
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case MODE_NONE:
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for (y = 0; y < m; y++) {
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memcpy(dst + dst_linesize * y * 2 , src + src_linesize * (y * 2 + a), w);
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memcpy(dst + dst_linesize * (y * 2 + 1), src + src_linesize * (y * 2 + b), w);
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}
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break;
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case MODE_INTERLEAVE:
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for (y = 0; y < m; y++) {
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memcpy(dst + dst_linesize * (y * 2 + a), src + src_linesize * y , w);
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memcpy(dst + dst_linesize * (y * 2 + b), src + src_linesize * (y + m), w);
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}
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break;
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}
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}
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static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
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{
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IlContext *il = inlink->dst->priv;
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AVFilterLink *outlink = inlink->dst->outputs[0];
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AVFilterBufferRef *out;
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int ret;
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out = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
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if (!out) {
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avfilter_unref_bufferp(&inpicref);
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return AVERROR(ENOMEM);
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}
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avfilter_copy_buffer_ref_props(out, inpicref);
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interleave(out->data[0], inpicref->data[0],
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il->width, inlink->h,
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out->linesize[0], inpicref->linesize[0],
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il->luma_mode, il->luma_swap);
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if (il->nb_planes > 2) {
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interleave(out->data[1], inpicref->data[1],
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il->chroma_width, il->chroma_height,
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out->linesize[1], inpicref->linesize[1],
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il->chroma_mode, il->chroma_swap);
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interleave(out->data[2], inpicref->data[2],
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il->chroma_width, il->chroma_height,
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out->linesize[2], inpicref->linesize[2],
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il->chroma_mode, il->chroma_swap);
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}
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if (il->nb_planes == 2 && il->nb_planes == 4) {
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int comp = il->nb_planes - 1;
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interleave(out->data[comp], inpicref->data[comp],
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il->width, inlink->h,
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out->linesize[comp], inpicref->linesize[comp],
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il->alpha_mode, il->alpha_swap);
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}
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ret = ff_filter_frame(outlink, out);
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avfilter_unref_bufferp(&inpicref);
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return ret;
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}
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static int query_formats(AVFilterContext *ctx)
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{
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AVFilterFormats *formats = NULL;
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int fmt;
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for (fmt = 0; fmt < AV_PIX_FMT_NB; fmt++) {
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
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if (!(desc->flags & PIX_FMT_PAL ||
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fmt == AV_PIX_FMT_NV21 ||
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fmt == AV_PIX_FMT_NV12))
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ff_add_format(&formats, fmt);
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}
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ff_set_common_formats(ctx, formats);
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return 0;
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}
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static const AVFilterPad inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.get_video_buffer = ff_null_get_video_buffer,
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.filter_frame = filter_frame,
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.config_props = config_input,
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},
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{ NULL }
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};
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static const AVFilterPad outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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},
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{ NULL }
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};
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AVFilter avfilter_vf_il = {
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.name = "il",
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.description = NULL_IF_CONFIG_SMALL("Deinterleave or interleave fields."),
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.priv_size = sizeof(IlContext),
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.init = init,
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.query_formats = query_formats,
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.inputs = inputs,
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||||||
|
.outputs = outputs,
|
||||||
|
.priv_class = &il_class,
|
||||||
|
};
|
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Reference in New Issue
Block a user