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https://github.com/FFmpeg/FFmpeg.git
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avfilter: add fftdnoiz filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
74a7ddd985
commit
974eb4aaaa
@ -5,6 +5,7 @@ version <next>:
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- deblock filter
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- tmix filter
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- amplify filter
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- fftdnoiz filter
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version 4.0:
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2
configure
vendored
2
configure
vendored
@ -3325,6 +3325,8 @@ elbg_filter_deps="avcodec"
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eq_filter_deps="gpl"
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fftfilt_filter_deps="avcodec"
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fftfilt_filter_select="rdft"
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fftdnoiz_filter_deps="avcodec"
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fftdnoiz_filter_select="fft"
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find_rect_filter_deps="avcodec avformat gpl"
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firequalizer_filter_deps="avcodec"
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firequalizer_filter_select="rdft"
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@ -8696,6 +8696,40 @@ fftfilt=dc_Y=0:weight_Y='exp(-4 * ((Y+X)/(W+H)))'
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@end itemize
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@section fftdnoiz
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Denoise frames using 3D FFT (frequency domain filtering).
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The filter accepts the following options:
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@table @option
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@item sigma
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Set the noise sigma constant. This sets denoising strength.
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Default value is 1. Allowed range is from 0 to 30.
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Using very high sigma with low overlap may give blocking artifacts.
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@item amount
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Set amount of denoising. By default all detected noise is reduced.
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Default value is 1. Allowed range is from 0 to 1.
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@item block
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Set size of block, Default is 4, can be 3, 4, 5 or 6.
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Actual size of block in pixels is 2 to power of @var{block}, so by default
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block size in pixels is 2^4 which is 16.
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@item overlap
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Set block overlap. Default is 0.5. Allowed range is from 0.2 to 0.8.
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@item prev
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Set number of previous frames to use for denoising. By default is set to 0.
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@item next
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Set number of next frames to to use for denoising. By default is set to 0.
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@item planes
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Set planes which will be filtered, by default are all available filtered
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except alpha.
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@end table
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@section field
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Extract a single field from an interlaced image using stride
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@ -201,6 +201,7 @@ OBJS-$(CONFIG_EQ_FILTER) += vf_eq.o
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OBJS-$(CONFIG_EROSION_FILTER) += vf_neighbor.o
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OBJS-$(CONFIG_EXTRACTPLANES_FILTER) += vf_extractplanes.o
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OBJS-$(CONFIG_FADE_FILTER) += vf_fade.o
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OBJS-$(CONFIG_FFTDNOIZ_FILTER) += vf_fftdnoiz.o
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OBJS-$(CONFIG_FFTFILT_FILTER) += vf_fftfilt.o
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OBJS-$(CONFIG_FIELD_FILTER) += vf_field.o
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OBJS-$(CONFIG_FIELDHINT_FILTER) += vf_fieldhint.o
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@ -193,6 +193,7 @@ extern AVFilter ff_vf_eq;
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extern AVFilter ff_vf_erosion;
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extern AVFilter ff_vf_extractplanes;
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extern AVFilter ff_vf_fade;
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extern AVFilter ff_vf_fftdnoiz;
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extern AVFilter ff_vf_fftfilt;
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extern AVFilter ff_vf_field;
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extern AVFilter ff_vf_fieldhint;
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@ -30,8 +30,8 @@
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#include "libavutil/version.h"
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#define LIBAVFILTER_VERSION_MAJOR 7
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#define LIBAVFILTER_VERSION_MINOR 21
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#define LIBAVFILTER_VERSION_MICRO 101
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#define LIBAVFILTER_VERSION_MINOR 22
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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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LIBAVFILTER_VERSION_MINOR, \
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694
libavfilter/vf_fftdnoiz.c
Normal file
694
libavfilter/vf_fftdnoiz.c
Normal file
@ -0,0 +1,694 @@
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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 <float.h>
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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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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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#include "libavcodec/avfft.h"
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enum BufferTypes {
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CURRENT,
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PREV,
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NEXT,
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BSIZE
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};
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typedef struct PlaneContext {
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int planewidth, planeheight;
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int nox, noy;
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int b;
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int o;
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float n;
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float *buffer[BSIZE];
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FFTComplex *hdata, *vdata;
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int data_linesize;
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int buffer_linesize;
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FFTContext *fft, *ifft;
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} PlaneContext;
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typedef struct FFTdnoizContext {
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const AVClass *class;
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float sigma;
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float amount;
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int block_bits;
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float overlap;
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int nb_prev;
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int nb_next;
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int planesf;
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AVFrame *prev, *cur, *next;
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int depth;
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int nb_planes;
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PlaneContext planes[4];
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void (*import_row)(FFTComplex *dst, uint8_t *src, int rw);
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void (*export_row)(FFTComplex *src, uint8_t *dst, int rw, float scale, int depth);
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} FFTdnoizContext;
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#define OFFSET(x) offsetof(FFTdnoizContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption fftdnoiz_options[] = {
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{ "sigma", "set denoise strength",
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OFFSET(sigma), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 30, .flags = FLAGS },
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{ "amount", "set amount of denoising",
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OFFSET(amount), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0.01, 1, .flags = FLAGS },
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{ "block", "set block log2(size)",
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OFFSET(block_bits), AV_OPT_TYPE_INT, {.i64=4}, 3, 6, .flags = FLAGS },
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{ "overlap", "set block overlap",
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OFFSET(overlap), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0.2, 0.8, .flags = FLAGS },
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{ "prev", "set number of previous frames for temporal denoising",
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OFFSET(nb_prev), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = FLAGS },
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{ "next", "set number of next frames for temporal denoising",
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OFFSET(nb_next), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = FLAGS },
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{ "planes", "set planes to filter",
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OFFSET(planesf), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, .flags = FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(fftdnoiz);
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static av_cold int init(AVFilterContext *ctx)
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{
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FFTdnoizContext *s = ctx->priv;
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int i;
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for (i = 0; i < 4; i++) {
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PlaneContext *p = &s->planes[i];
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p->fft = av_fft_init(s->block_bits, 0);
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p->ifft = av_fft_init(s->block_bits, 1);
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if (!p->fft || !p->ifft)
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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 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_GRAY8, AV_PIX_FMT_GRAY9,
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AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12,
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AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVJ411P,
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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,
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AV_PIX_FMT_YUV440P10,
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
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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_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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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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typedef struct ThreadData {
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float *src, *dst;
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} ThreadData;
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static void import_row8(FFTComplex *dst, uint8_t *src, int rw)
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{
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int j;
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for (j = 0; j < rw; j++) {
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dst[j].re = src[j];
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dst[j].im = 0;
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}
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}
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static void export_row8(FFTComplex *src, uint8_t *dst, int rw, float scale, int depth)
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{
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int j;
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for (j = 0; j < rw; j++)
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dst[j] = av_clip_uint8(src[j].re * scale);
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}
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static void import_row16(FFTComplex *dst, uint8_t *srcp, int rw)
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{
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uint16_t *src = (uint16_t *)srcp;
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int j;
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for (j = 0; j < rw; j++) {
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dst[j].re = src[j];
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dst[j].im = 0;
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}
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}
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static void export_row16(FFTComplex *src, uint8_t *dstp, int rw, float scale, int depth)
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{
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uint16_t *dst = (uint16_t *)dstp;
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int j;
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for (j = 0; j < rw; j++)
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dst[j] = av_clip_uintp2(src[j].re * scale, depth);
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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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const AVPixFmtDescriptor *desc;
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FFTdnoizContext *s = ctx->priv;
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int i;
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desc = av_pix_fmt_desc_get(inlink->format);
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s->depth = desc->comp[0].depth;
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if (s->depth <= 8) {
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s->import_row = import_row8;
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s->export_row = export_row8;
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} else {
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s->import_row = import_row16;
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s->export_row = export_row16;
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s->sigma *= 1 << (s->depth - 8) * (1 + s->nb_prev + s->nb_next);
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}
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s->planes[1].planewidth = s->planes[2].planewidth = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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s->planes[0].planewidth = s->planes[3].planewidth = inlink->w;
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s->planes[1].planeheight = s->planes[2].planeheight = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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s->planes[0].planeheight = s->planes[3].planeheight = inlink->h;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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for (i = 0; i < s->nb_planes; i++) {
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PlaneContext *p = &s->planes[i];
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int size;
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p->b = 1 << s->block_bits;
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p->n = 1.f / (p->b * p->b);
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p->o = p->b * s->overlap;
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size = p->b - p->o;
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p->nox = (p->planewidth + (size - 1)) / size;
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p->noy = (p->planeheight + (size - 1)) / size;
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av_log(ctx, AV_LOG_DEBUG, "nox:%d noy:%d size:%d\n", p->nox, p->noy, size);
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p->buffer_linesize = p->b * p->nox * sizeof(FFTComplex);
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p->buffer[CURRENT] = av_calloc(p->b * p->noy, p->buffer_linesize);
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if (!p->buffer[CURRENT])
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return AVERROR(ENOMEM);
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if (s->nb_prev > 0) {
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p->buffer[PREV] = av_calloc(p->b * p->noy, p->buffer_linesize);
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if (!p->buffer[PREV])
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return AVERROR(ENOMEM);
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}
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if (s->nb_next > 0) {
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p->buffer[NEXT] = av_calloc(p->b * p->noy, p->buffer_linesize);
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if (!p->buffer[NEXT])
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return AVERROR(ENOMEM);
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}
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p->data_linesize = 2 * p->b * sizeof(float);
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p->hdata = av_calloc(p->b, p->data_linesize);
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p->vdata = av_calloc(p->b, p->data_linesize);
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if (!p->hdata || !p->vdata)
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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 import_plane(FFTdnoizContext *s,
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uint8_t *srcp, int src_linesize,
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float *buffer, int buffer_linesize, int plane)
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{
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PlaneContext *p = &s->planes[plane];
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const int width = p->planewidth;
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const int height = p->planeheight;
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const int block = p->b;
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const int overlap = p->o;
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const int size = block - overlap;
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const int nox = p->nox;
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const int noy = p->noy;
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const int bpp = (s->depth + 7) / 8;
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const int data_linesize = p->data_linesize / sizeof(FFTComplex);
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FFTComplex *hdata = p->hdata;
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FFTComplex *vdata = p->vdata;
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int x, y, i, j;
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buffer_linesize /= sizeof(float);
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for (y = 0; y < noy; y++) {
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for (x = 0; x < nox; x++) {
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const int rh = FFMIN(block, height - y * size);
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const int rw = FFMIN(block, width - x * size);
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uint8_t *src = srcp + src_linesize * y * size + x * size * bpp;
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float *bdst = buffer + buffer_linesize * y * block + x * block * 2;
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FFTComplex *ssrc, *dst = hdata;
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for (i = 0; i < rh; i++) {
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s->import_row(dst, src, rw);
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for (j = rw; j < block; j++) {
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dst[j].re = dst[block - j - 1].re;
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dst[j].im = 0;
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}
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av_fft_permute(p->fft, dst);
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av_fft_calc(p->fft, dst);
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src += src_linesize;
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dst += data_linesize;
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}
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dst = hdata;
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for (; i < block; i++) {
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for (j = 0; j < block; j++) {
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dst[j].re = dst[(block - i - 1) * data_linesize + j].re;
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dst[j].im = dst[(block - i - 1) * data_linesize + j].im;
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}
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}
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ssrc = hdata;
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dst = vdata;
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for (i = 0; i < block; i++) {
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for (j = 0; j < block; j++)
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dst[j] = ssrc[j * data_linesize + i];
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av_fft_permute(p->fft, dst);
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av_fft_calc(p->fft, dst);
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memcpy(bdst, dst, block * sizeof(FFTComplex));
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dst += data_linesize;
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bdst += buffer_linesize;
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}
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}
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}
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}
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static void export_plane(FFTdnoizContext *s,
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uint8_t *dstp, int dst_linesize,
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float *buffer, int buffer_linesize, int plane)
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{
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PlaneContext *p = &s->planes[plane];
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const int depth = s->depth;
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const int bpp = (depth + 7) / 8;
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const int width = p->planewidth;
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const int height = p->planeheight;
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const int block = p->b;
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const int overlap = p->o;
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const int hoverlap = overlap / 2;
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const int size = block - overlap;
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const int nox = p->nox;
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const int noy = p->noy;
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const int data_linesize = p->data_linesize / sizeof(FFTComplex);
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const float scale = 1.f / (block * block);
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FFTComplex *hdata = p->hdata;
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FFTComplex *vdata = p->vdata;
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int x, y, i, j;
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buffer_linesize /= sizeof(float);
|
||||
for (y = 0; y < noy; y++) {
|
||||
for (x = 0; x < nox; x++) {
|
||||
const int woff = x == 0 ? 0 : hoverlap;
|
||||
const int hoff = y == 0 ? 0 : hoverlap;
|
||||
const int rw = x == 0 ? block : FFMIN(size, width - x * size - woff);
|
||||
const int rh = y == 0 ? block : FFMIN(size, height - y * size - hoff);
|
||||
float *bsrc = buffer + buffer_linesize * y * block + x * block * 2;
|
||||
uint8_t *dst = dstp + dst_linesize * (y * size + hoff) + (x * size + woff) * bpp;
|
||||
FFTComplex *hdst, *ddst = vdata;
|
||||
|
||||
hdst = hdata;
|
||||
for (i = 0; i < block; i++) {
|
||||
memcpy(ddst, bsrc, block * sizeof(FFTComplex));
|
||||
av_fft_permute(p->ifft, ddst);
|
||||
av_fft_calc(p->ifft, ddst);
|
||||
for (j = 0; j < block; j++) {
|
||||
hdst[j * data_linesize + i] = ddst[j];
|
||||
}
|
||||
|
||||
ddst += data_linesize;
|
||||
bsrc += buffer_linesize;
|
||||
}
|
||||
|
||||
hdst = hdata + hoff * data_linesize;
|
||||
for (i = 0; i < rh; i++) {
|
||||
av_fft_permute(p->ifft, hdst);
|
||||
av_fft_calc(p->ifft, hdst);
|
||||
s->export_row(hdst + woff, dst, rw, scale, depth);
|
||||
|
||||
hdst += data_linesize;
|
||||
dst += dst_linesize;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void filter_plane3d2(FFTdnoizContext *s, int plane, float *pbuffer, float *nbuffer)
|
||||
{
|
||||
PlaneContext *p = &s->planes[plane];
|
||||
const int block = p->b;
|
||||
const int nox = p->nox;
|
||||
const int noy = p->noy;
|
||||
const int buffer_linesize = p->buffer_linesize / sizeof(float);
|
||||
const float sigma = s->sigma * s->sigma * block * block;
|
||||
const float limit = 1.f - s->amount;
|
||||
float *cbuffer = p->buffer[CURRENT];
|
||||
const float cfactor = sqrtf(3.f) * 0.5f;
|
||||
const float scale = 1.f / 3.f;
|
||||
int y, x, i, j;
|
||||
|
||||
for (y = 0; y < noy; y++) {
|
||||
for (x = 0; x < nox; x++) {
|
||||
float *cbuff = cbuffer + buffer_linesize * y * block + x * block * 2;
|
||||
float *pbuff = pbuffer + buffer_linesize * y * block + x * block * 2;
|
||||
float *nbuff = nbuffer + buffer_linesize * y * block + x * block * 2;
|
||||
|
||||
for (i = 0; i < block; i++) {
|
||||
for (j = 0; j < block; j++) {
|
||||
float sumr, sumi, difr, difi, mpr, mpi, mnr, mni;
|
||||
float factor, power, sumpnr, sumpni;
|
||||
|
||||
sumpnr = pbuff[2 * j ] + nbuff[2 * j ];
|
||||
sumpni = pbuff[2 * j + 1] + nbuff[2 * j + 1];
|
||||
sumr = cbuff[2 * j ] + sumpnr;
|
||||
sumi = cbuff[2 * j + 1] + sumpni;
|
||||
difr = cfactor * (nbuff[2 * j ] - pbuff[2 * j ]);
|
||||
difi = cfactor * (pbuff[2 * j + 1] - nbuff[2 * j + 1]);
|
||||
mpr = cbuff[2 * j ] - 0.5f * sumpnr + difi;
|
||||
mnr = mpr - difi - difi;
|
||||
mpi = cbuff[2 * j + 1] - 0.5f * sumpni + difr;
|
||||
mni = mpi - difr - difr;
|
||||
power = sumr * sumr + sumi * sumi + 1e-15f;
|
||||
factor = FFMAX((power - sigma) / power, limit);
|
||||
sumr *= factor;
|
||||
sumi *= factor;
|
||||
power = mpr * mpr + mpi * mpi + 1e-15f;
|
||||
factor = FFMAX((power - sigma) / power, limit);
|
||||
mpr *= factor;
|
||||
mpi *= factor;
|
||||
power = mnr * mnr + mni * mni + 1e-15f;
|
||||
factor = FFMAX((power - sigma) / power, limit);
|
||||
mnr *= factor;
|
||||
mni *= factor;
|
||||
cbuff[2 * j ] = (sumr + mpr + mnr) * scale;
|
||||
cbuff[2 * j + 1] = (sumi + mpi + mni) * scale;
|
||||
|
||||
}
|
||||
|
||||
cbuff += buffer_linesize;
|
||||
pbuff += buffer_linesize;
|
||||
nbuff += buffer_linesize;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void filter_plane3d1(FFTdnoizContext *s, int plane, float *pbuffer)
|
||||
{
|
||||
PlaneContext *p = &s->planes[plane];
|
||||
const int block = p->b;
|
||||
const int nox = p->nox;
|
||||
const int noy = p->noy;
|
||||
const int buffer_linesize = p->buffer_linesize / sizeof(float);
|
||||
const float sigma = s->sigma * s->sigma * block * block;
|
||||
const float limit = 1.f - s->amount;
|
||||
float *cbuffer = p->buffer[CURRENT];
|
||||
int y, x, i, j;
|
||||
|
||||
for (y = 0; y < noy; y++) {
|
||||
for (x = 0; x < nox; x++) {
|
||||
float *cbuff = cbuffer + buffer_linesize * y * block + x * block * 2;
|
||||
float *pbuff = pbuffer + buffer_linesize * y * block + x * block * 2;
|
||||
|
||||
for (i = 0; i < block; i++) {
|
||||
for (j = 0; j < block; j++) {
|
||||
float factor, power, re, im, pre, pim;
|
||||
float sumr, sumi, difr, difi;
|
||||
|
||||
re = cbuff[j * 2 ];
|
||||
pre = pbuff[j * 2 ];
|
||||
im = cbuff[j * 2 + 1];
|
||||
pim = pbuff[j * 2 + 1];
|
||||
|
||||
sumr = re + pre;
|
||||
sumi = im + pim;
|
||||
difr = re - pre;
|
||||
difi = im - pim;
|
||||
|
||||
power = sumr * sumr + sumi * sumi + 1e-15f;
|
||||
factor = FFMAX(limit, (power - sigma) / power);
|
||||
sumr *= factor;
|
||||
sumi *= factor;
|
||||
power = difr * difr + difi * difi + 1e-15f;
|
||||
factor = FFMAX(limit, (power - sigma) / power);
|
||||
difr *= factor;
|
||||
difi *= factor;
|
||||
|
||||
cbuff[j * 2 ] = (sumr + difr) * 0.5f;
|
||||
cbuff[j * 2 + 1] = (sumi + difi) * 0.5f;
|
||||
}
|
||||
|
||||
cbuff += buffer_linesize;
|
||||
pbuff += buffer_linesize;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void filter_plane2d(FFTdnoizContext *s, int plane)
|
||||
{
|
||||
PlaneContext *p = &s->planes[plane];
|
||||
const int block = p->b;
|
||||
const int nox = p->nox;
|
||||
const int noy = p->noy;
|
||||
const int buffer_linesize = p->buffer_linesize / 4;
|
||||
const float sigma = s->sigma * s->sigma * block * block;
|
||||
const float limit = 1.f - s->amount;
|
||||
float *buffer = p->buffer[CURRENT];
|
||||
int y, x, i, j;
|
||||
|
||||
for (y = 0; y < noy; y++) {
|
||||
for (x = 0; x < nox; x++) {
|
||||
float *buff = buffer + buffer_linesize * y * block + x * block * 2;
|
||||
|
||||
for (i = 0; i < block; i++) {
|
||||
for (j = 0; j < block; j++) {
|
||||
float factor, power, re, im;
|
||||
|
||||
re = buff[j * 2 ];
|
||||
im = buff[j * 2 + 1];
|
||||
power = re * re + im * im + 1e-15f;
|
||||
factor = FFMAX(limit, (power - sigma) / power);
|
||||
buff[j * 2 ] *= factor;
|
||||
buff[j * 2 + 1] *= factor;
|
||||
}
|
||||
|
||||
buff += buffer_linesize;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
||||
{
|
||||
AVFilterContext *ctx = inlink->dst;
|
||||
FFTdnoizContext *s = ctx->priv;
|
||||
AVFilterLink *outlink = ctx->outputs[0];
|
||||
int direct, plane;
|
||||
AVFrame *out;
|
||||
|
||||
if (s->nb_next > 0 && s->nb_prev > 0) {
|
||||
av_frame_free(&s->prev);
|
||||
s->prev = s->cur;
|
||||
s->cur = s->next;
|
||||
s->next = in;
|
||||
|
||||
if (!s->prev && s->cur) {
|
||||
s->prev = av_frame_clone(s->cur);
|
||||
if (!s->prev)
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
if (!s->cur)
|
||||
return 0;
|
||||
} else if (s->nb_next > 0) {
|
||||
av_frame_free(&s->cur);
|
||||
s->cur = s->next;
|
||||
s->next = in;
|
||||
|
||||
if (!s->cur)
|
||||
return 0;
|
||||
} else if (s->nb_prev > 0) {
|
||||
av_frame_free(&s->prev);
|
||||
s->prev = s->cur;
|
||||
s->cur = in;
|
||||
|
||||
if (!s->prev)
|
||||
s->prev = av_frame_clone(s->cur);
|
||||
if (!s->prev)
|
||||
return AVERROR(ENOMEM);
|
||||
} else {
|
||||
s->cur = in;
|
||||
}
|
||||
|
||||
if (av_frame_is_writable(in) && s->nb_next == 0 && s->nb_prev == 0) {
|
||||
direct = 1;
|
||||
out = in;
|
||||
} else {
|
||||
direct = 0;
|
||||
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
||||
if (!out)
|
||||
return AVERROR(ENOMEM);
|
||||
av_frame_copy_props(out, s->cur);
|
||||
}
|
||||
|
||||
for (plane = 0; plane < s->nb_planes; plane++) {
|
||||
PlaneContext *p = &s->planes[plane];
|
||||
|
||||
if (!((1 << plane) & s->planesf) || ctx->is_disabled) {
|
||||
if (!direct)
|
||||
av_image_copy_plane(out->data[plane], out->linesize[plane],
|
||||
s->cur->data[plane], s->cur->linesize[plane],
|
||||
p->planewidth, p->planeheight);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (s->next) {
|
||||
import_plane(s, s->next->data[plane], s->next->linesize[plane],
|
||||
p->buffer[NEXT], p->buffer_linesize, plane);
|
||||
}
|
||||
|
||||
if (s->prev) {
|
||||
import_plane(s, s->prev->data[plane], s->prev->linesize[plane],
|
||||
p->buffer[PREV], p->buffer_linesize, plane);
|
||||
}
|
||||
|
||||
import_plane(s, s->cur->data[plane], s->cur->linesize[plane],
|
||||
p->buffer[CURRENT], p->buffer_linesize, plane);
|
||||
|
||||
if (s->next && s->prev) {
|
||||
filter_plane3d2(s, plane, p->buffer[PREV], p->buffer[NEXT]);
|
||||
} else if (s->next) {
|
||||
filter_plane3d1(s, plane, p->buffer[NEXT]);
|
||||
} else if (s->prev) {
|
||||
filter_plane3d1(s, plane, p->buffer[PREV]);
|
||||
} else {
|
||||
filter_plane2d(s, plane);
|
||||
}
|
||||
|
||||
export_plane(s, out->data[plane], out->linesize[plane],
|
||||
p->buffer[CURRENT], p->buffer_linesize, plane);
|
||||
}
|
||||
|
||||
if (s->nb_next == 0 && s->nb_prev == 0) {
|
||||
if (direct) {
|
||||
s->cur = NULL;
|
||||
} else {
|
||||
av_frame_free(&s->cur);
|
||||
}
|
||||
}
|
||||
return ff_filter_frame(outlink, out);
|
||||
}
|
||||
|
||||
static int request_frame(AVFilterLink *outlink)
|
||||
{
|
||||
AVFilterContext *ctx = outlink->src;
|
||||
FFTdnoizContext *s = ctx->priv;
|
||||
int ret = 0;
|
||||
|
||||
ret = ff_request_frame(ctx->inputs[0]);
|
||||
|
||||
if (ret == AVERROR_EOF && (s->nb_next > 0)) {
|
||||
AVFrame *buf;
|
||||
|
||||
if (s->next && s->nb_next > 0)
|
||||
buf = av_frame_clone(s->next);
|
||||
else if (s->cur)
|
||||
buf = av_frame_clone(s->cur);
|
||||
else
|
||||
buf = av_frame_clone(s->prev);
|
||||
if (!buf)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
ret = filter_frame(ctx->inputs[0], buf);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ret = AVERROR_EOF;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static av_cold void uninit(AVFilterContext *ctx)
|
||||
{
|
||||
FFTdnoizContext *s = ctx->priv;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
PlaneContext *p = &s->planes[i];
|
||||
|
||||
av_freep(&p->hdata);
|
||||
av_freep(&p->vdata);
|
||||
av_freep(&p->buffer[PREV]);
|
||||
av_freep(&p->buffer[CURRENT]);
|
||||
av_freep(&p->buffer[NEXT]);
|
||||
av_fft_end(p->fft);
|
||||
av_fft_end(p->ifft);
|
||||
}
|
||||
|
||||
av_frame_free(&s->prev);
|
||||
av_frame_free(&s->cur);
|
||||
av_frame_free(&s->next);
|
||||
}
|
||||
|
||||
static const AVFilterPad fftdnoiz_inputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
.config_props = config_input,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static const AVFilterPad fftdnoiz_outputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.request_frame = request_frame,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
AVFilter ff_vf_fftdnoiz = {
|
||||
.name = "fftdnoiz",
|
||||
.description = NULL_IF_CONFIG_SMALL("Denoise frames using 3D FFT."),
|
||||
.priv_size = sizeof(FFTdnoizContext),
|
||||
.init = init,
|
||||
.uninit = uninit,
|
||||
.query_formats = query_formats,
|
||||
.inputs = fftdnoiz_inputs,
|
||||
.outputs = fftdnoiz_outputs,
|
||||
.priv_class = &fftdnoiz_class,
|
||||
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user