mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter: add chromashift filter
This commit is contained in:
Paul B Mahol
parent
8f875a90c4
commit
cfd421226c
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@ -6253,6 +6253,23 @@ ffmpeg -f lavfi -i color=c=black:s=1280x720 -i video.mp4 -shortest -filter_compl
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@end example
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@end itemize
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@section chromashift
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Shift chroma pixels horizontally and/or vertically.
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The filter accepts the following options:
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@table @option
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@item cbh
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Set amount to shift chroma-blue horizontally.
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@item cbv
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Set amount to shift chroma-blue vertically.
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@item crh
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Set amount to shift chroma-red horizontally.
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@item crv
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Set amount to shift chroma-red vertically.
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@item edge
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Set edge mode, can be @var{smear}, default, or @var{warp}.
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@end table
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@section ciescope
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Display CIE color diagram with pixels overlaid onto it.
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@ -169,6 +169,7 @@ OBJS-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \
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OBJS-$(CONFIG_BWDIF_FILTER) += vf_bwdif.o
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OBJS-$(CONFIG_CHROMAHOLD_FILTER) += vf_chromakey.o
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OBJS-$(CONFIG_CHROMAKEY_FILTER) += vf_chromakey.o
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OBJS-$(CONFIG_CHROMASHIFT_FILTER) += vf_chromashift.o
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OBJS-$(CONFIG_CIESCOPE_FILTER) += vf_ciescope.o
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OBJS-$(CONFIG_CODECVIEW_FILTER) += vf_codecview.o
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OBJS-$(CONFIG_COLORBALANCE_FILTER) += vf_colorbalance.o
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@ -158,6 +158,7 @@ extern AVFilter ff_vf_boxblur_opencl;
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extern AVFilter ff_vf_bwdif;
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extern AVFilter ff_vf_chromahold;
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extern AVFilter ff_vf_chromakey;
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extern AVFilter ff_vf_chromashift;
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extern AVFilter ff_vf_ciescope;
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extern AVFilter ff_vf_codecview;
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extern AVFilter ff_vf_colorbalance;
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@ -0,0 +1,259 @@
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/*
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* Copyright (c) 2018 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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#include "libavutil/avstring.h"
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#include "libavutil/eval.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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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 "formats.h"
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#include "internal.h"
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#include "framesync.h"
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#include "video.h"
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typedef struct ChromaShiftContext {
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const AVClass *class;
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int cbh, cbv;
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int crh, crv;
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int edge;
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int depth;
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int height[4];
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int width[4];
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int linesize[4];
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AVFrame *in;
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int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} ChromaShiftContext;
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_NONE
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};
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AVFilterFormats *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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#define DEFINE_SMEAR(depth, type, div) \
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static int smear_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
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{ \
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ChromaShiftContext *s = ctx->priv; \
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AVFrame *in = s->in; \
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AVFrame *out = arg; \
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const int sulinesize = in->linesize[1] / div; \
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const int svlinesize = in->linesize[2] / div; \
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const int ulinesize = out->linesize[1] / div; \
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const int vlinesize = out->linesize[2] / div; \
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const int cbh = s->cbh; \
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const int cbv = s->cbv; \
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const int crh = s->crh; \
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const int crv = s->crv; \
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const int h = s->height[1]; \
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const int w = s->width[1]; \
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const int slice_start = (h * jobnr) / nb_jobs; \
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const int slice_end = (h * (jobnr+1)) / nb_jobs; \
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const type *su = (const type *)in->data[1]; \
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const type *sv = (const type *)in->data[2]; \
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type *du = (type *)out->data[1] + slice_start * ulinesize; \
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type *dv = (type *)out->data[2] + slice_start * vlinesize; \
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\
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for (int y = slice_start; y < slice_end; y++) { \
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const int duy = av_clip(y - cbv, 0, h-1) * sulinesize; \
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const int dvy = av_clip(y - crv, 0, h-1) * svlinesize; \
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\
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for (int x = 0; x < w; x++) { \
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du[x] = su[av_clip(x - cbh, 0, w - 1) + duy]; \
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dv[x] = sv[av_clip(x - crh, 0, w - 1) + dvy]; \
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} \
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\
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du += ulinesize; \
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dv += vlinesize; \
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} \
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\
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return 0; \
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}
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DEFINE_SMEAR(8, uint8_t, 1)
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DEFINE_SMEAR(16, uint16_t, 2)
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#define DEFINE_WRAP(depth, type, div) \
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static int wrap_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
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{ \
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ChromaShiftContext *s = ctx->priv; \
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AVFrame *in = s->in; \
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AVFrame *out = arg; \
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const int sulinesize = in->linesize[1] / div; \
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const int svlinesize = in->linesize[2] / div; \
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const int ulinesize = out->linesize[1] / div; \
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const int vlinesize = out->linesize[2] / div; \
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const int cbh = s->cbh; \
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const int cbv = s->cbv; \
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const int crh = s->crh; \
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const int crv = s->crv; \
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const int h = s->height[1]; \
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const int w = s->width[1]; \
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const int slice_start = (h * jobnr) / nb_jobs; \
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const int slice_end = (h * (jobnr+1)) / nb_jobs; \
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const type *su = (const type *)in->data[1]; \
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const type *sv = (const type *)in->data[2]; \
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type *du = (type *)out->data[1] + slice_start * ulinesize; \
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type *dv = (type *)out->data[2] + slice_start * vlinesize; \
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\
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for (int y = slice_start; y < slice_end; y++) { \
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int uy = (y - cbv) % h; \
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int vy = (y - crv) % h; \
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\
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if (uy < 0) \
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uy += h; \
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if (vy < 0) \
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vy += h; \
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\
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for (int x = 0; x < w; x++) { \
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int ux = (x - cbh) % w; \
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int vx = (x - crh) % w; \
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\
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if (ux < 0) \
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ux += w; \
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if (vx < 0) \
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vx += w; \
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\
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du[x] = su[ux + uy * sulinesize]; \
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dv[x] = sv[vx + vy * svlinesize]; \
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} \
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\
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du += ulinesize; \
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dv += vlinesize; \
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} \
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\
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return 0; \
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}
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DEFINE_WRAP(8, uint8_t, 1)
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DEFINE_WRAP(16, uint16_t, 2)
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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AVFilterLink *outlink = ctx->outputs[0];
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ChromaShiftContext *s = ctx->priv;
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AVFrame *out;
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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av_frame_free(&in);
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return AVERROR(ENOMEM);
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}
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av_frame_copy_props(out, in);
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s->in = in;
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av_image_copy_plane(out->data[0] + out->linesize[0],
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out->linesize[0],
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in->data[0], in->linesize[0],
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s->linesize[0], s->height[0]);
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ctx->internal->execute(ctx, s->filter_slice, out, NULL,
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FFMIN3(s->height[1],
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s->height[2],
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ff_filter_get_nb_threads(ctx)));
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s->in = NULL;
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av_frame_free(&in);
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return ff_filter_frame(outlink, out);
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}
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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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ChromaShiftContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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s->depth = desc->comp[0].depth;
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if (s->edge)
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s->filter_slice = s->depth > 8 ? wrap_slice16 : wrap_slice8;
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else
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s->filter_slice = s->depth > 8 ? smear_slice16 : smear_slice8;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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s->height[0] = s->height[3] = inlink->h;
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s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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s->width[0] = s->width[3] = inlink->w;
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return av_image_fill_linesizes(s->linesize, inlink->format, inlink->w);
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}
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#define OFFSET(x) offsetof(ChromaShiftContext, x)
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#define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption chromashift_options[] = {
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{ "cbh", "shift chroma-blue horizontally", OFFSET(cbh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
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{ "cbv", "shift chroma-blue vertically", OFFSET(cbv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
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{ "crh", "shift chroma-red horizontally", OFFSET(crh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
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{ "crv", "shift chroma-red vertically", OFFSET(crv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
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{ "edge", "set edge operation", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = VF, "edge" },
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{ "smear", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, .flags = VF, "edge" },
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{ "wrap", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, .flags = VF, "edge" },
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{ NULL },
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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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.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_DEFINE_CLASS(chromashift);
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AVFilter ff_vf_chromashift = {
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.name = "chromashift",
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.description = NULL_IF_CONFIG_SMALL("Shift chroma."),
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.priv_size = sizeof(ChromaShiftContext),
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.priv_class = &chromashift_class,
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.query_formats = query_formats,
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.outputs = outputs,
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.inputs = inputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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};
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