| /* |
| * Copyright (c) 2016 Clément Bœsch <u pkh me> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @todo |
| * - better automatic defaults? see "Parameters" @ http://www.ipol.im/pub/art/2011/bcm_nlm/ |
| * - temporal support (probably doesn't need any displacement according to |
| * "Denoising image sequences does not require motion estimation") |
| * - Bayer pixel format support for at least raw photos? (DNG support would be |
| * handy here) |
| * - FATE test (probably needs visual threshold test mechanism due to the use |
| * of floats) |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "vf_nlmeans.h" |
| #include "video.h" |
| |
| struct weighted_avg { |
| float total_weight; |
| float sum; |
| }; |
| |
| typedef struct NLMeansContext { |
| const AVClass *class; |
| int nb_planes; |
| int chroma_w, chroma_h; |
| double pdiff_scale; // invert of the filtering parameter (sigma*10) squared |
| double sigma; // denoising strength |
| int patch_size, patch_hsize; // patch size and half size |
| int patch_size_uv, patch_hsize_uv; // patch size and half size for chroma planes |
| int research_size, research_hsize; // research size and half size |
| int research_size_uv, research_hsize_uv; // research size and half size for chroma planes |
| uint32_t *ii_orig; // integral image |
| uint32_t *ii; // integral image starting after the 0-line and 0-column |
| int ii_w, ii_h; // width and height of the integral image |
| ptrdiff_t ii_lz_32; // linesize in 32-bit units of the integral image |
| struct weighted_avg *wa; // weighted average of every pixel |
| ptrdiff_t wa_linesize; // linesize for wa in struct size unit |
| float *weight_lut; // lookup table mapping (scaled) patch differences to their associated weights |
| uint32_t max_meaningful_diff; // maximum difference considered (if the patch difference is too high we ignore the pixel) |
| NLMeansDSPContext dsp; |
| } NLMeansContext; |
| |
| #define OFFSET(x) offsetof(NLMeansContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| static const AVOption nlmeans_options[] = { |
| { "s", "denoising strength", OFFSET(sigma), AV_OPT_TYPE_DOUBLE, { .dbl = 1.0 }, 1.0, 30.0, FLAGS }, |
| { "p", "patch size", OFFSET(patch_size), AV_OPT_TYPE_INT, { .i64 = 3*2+1 }, 0, 99, FLAGS }, |
| { "pc", "patch size for chroma planes", OFFSET(patch_size_uv), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 99, FLAGS }, |
| { "r", "research window", OFFSET(research_size), AV_OPT_TYPE_INT, { .i64 = 7*2+1 }, 0, 99, FLAGS }, |
| { "rc", "research window for chroma planes", OFFSET(research_size_uv), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 99, FLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(nlmeans); |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, |
| AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, |
| AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, |
| AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, |
| AV_PIX_FMT_YUVJ411P, |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP, |
| AV_PIX_FMT_NONE |
| }; |
| |
| AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
| if (!fmts_list) |
| return AVERROR(ENOMEM); |
| return ff_set_common_formats(ctx, fmts_list); |
| } |
| |
| /** |
| * Compute squared difference of the safe area (the zone where s1 and s2 |
| * overlap). It is likely the largest integral zone, so it is interesting to do |
| * as little checks as possible; contrary to the unsafe version of this |
| * function, we do not need any clipping here. |
| * |
| * The line above dst and the column to its left are always readable. |
| */ |
| static void compute_safe_ssd_integral_image_c(uint32_t *dst, ptrdiff_t dst_linesize_32, |
| const uint8_t *s1, ptrdiff_t linesize1, |
| const uint8_t *s2, ptrdiff_t linesize2, |
| int w, int h) |
| { |
| int x, y; |
| const uint32_t *dst_top = dst - dst_linesize_32; |
| |
| /* SIMD-friendly assumptions allowed here */ |
| av_assert2(!(w & 0xf) && w >= 16 && h >= 1); |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x += 4) { |
| const int d0 = s1[x ] - s2[x ]; |
| const int d1 = s1[x + 1] - s2[x + 1]; |
| const int d2 = s1[x + 2] - s2[x + 2]; |
| const int d3 = s1[x + 3] - s2[x + 3]; |
| |
| dst[x ] = dst_top[x ] - dst_top[x - 1] + d0*d0; |
| dst[x + 1] = dst_top[x + 1] - dst_top[x ] + d1*d1; |
| dst[x + 2] = dst_top[x + 2] - dst_top[x + 1] + d2*d2; |
| dst[x + 3] = dst_top[x + 3] - dst_top[x + 2] + d3*d3; |
| |
| dst[x ] += dst[x - 1]; |
| dst[x + 1] += dst[x ]; |
| dst[x + 2] += dst[x + 1]; |
| dst[x + 3] += dst[x + 2]; |
| } |
| s1 += linesize1; |
| s2 += linesize2; |
| dst += dst_linesize_32; |
| dst_top += dst_linesize_32; |
| } |
| } |
| |
| /** |
| * Compute squared difference of an unsafe area (the zone nor s1 nor s2 could |
| * be readable). |
| * |
| * On the other hand, the line above dst and the column to its left are always |
| * readable. |
| * |
| * There is little point in having this function SIMDified as it is likely too |
| * complex and only handle small portions of the image. |
| * |
| * @param dst integral image |
| * @param dst_linesize_32 integral image linesize (in 32-bit integers unit) |
| * @param startx integral starting x position |
| * @param starty integral starting y position |
| * @param src source plane buffer |
| * @param linesize source plane linesize |
| * @param offx source offsetting in x |
| * @param offy source offsetting in y |
| * @paran r absolute maximum source offsetting |
| * @param sw source width |
| * @param sh source height |
| * @param w width to compute |
| * @param h height to compute |
| */ |
| static inline void compute_unsafe_ssd_integral_image(uint32_t *dst, ptrdiff_t dst_linesize_32, |
| int startx, int starty, |
| const uint8_t *src, ptrdiff_t linesize, |
| int offx, int offy, int r, int sw, int sh, |
| int w, int h) |
| { |
| int x, y; |
| |
| for (y = starty; y < starty + h; y++) { |
| uint32_t acc = dst[y*dst_linesize_32 + startx - 1] - dst[(y-1)*dst_linesize_32 + startx - 1]; |
| const int s1y = av_clip(y - r, 0, sh - 1); |
| const int s2y = av_clip(y - (r + offy), 0, sh - 1); |
| |
| for (x = startx; x < startx + w; x++) { |
| const int s1x = av_clip(x - r, 0, sw - 1); |
| const int s2x = av_clip(x - (r + offx), 0, sw - 1); |
| const uint8_t v1 = src[s1y*linesize + s1x]; |
| const uint8_t v2 = src[s2y*linesize + s2x]; |
| const int d = v1 - v2; |
| acc += d * d; |
| dst[y*dst_linesize_32 + x] = dst[(y-1)*dst_linesize_32 + x] + acc; |
| } |
| } |
| } |
| |
| /* |
| * Compute the sum of squared difference integral image |
| * http://www.ipol.im/pub/art/2014/57/ |
| * Integral Images for Block Matching - Gabriele Facciolo, Nicolas Limare, Enric Meinhardt-Llopis |
| * |
| * @param ii integral image of dimension (w+e*2) x (h+e*2) with |
| * an additional zeroed top line and column already |
| * "applied" to the pointer value |
| * @param ii_linesize_32 integral image linesize (in 32-bit integers unit) |
| * @param src source plane buffer |
| * @param linesize source plane linesize |
| * @param offx x-offsetting ranging in [-e;e] |
| * @param offy y-offsetting ranging in [-e;e] |
| * @param w source width |
| * @param h source height |
| * @param e research padding edge |
| */ |
| static void compute_ssd_integral_image(const NLMeansDSPContext *dsp, |
| uint32_t *ii, ptrdiff_t ii_linesize_32, |
| const uint8_t *src, ptrdiff_t linesize, int offx, int offy, |
| int e, int w, int h) |
| { |
| // ii has a surrounding padding of thickness "e" |
| const int ii_w = w + e*2; |
| const int ii_h = h + e*2; |
| |
| // we center the first source |
| const int s1x = e; |
| const int s1y = e; |
| |
| // 2nd source is the frame with offsetting |
| const int s2x = e + offx; |
| const int s2y = e + offy; |
| |
| // get the dimension of the overlapping rectangle where it is always safe |
| // to compare the 2 sources pixels |
| const int startx_safe = FFMAX(s1x, s2x); |
| const int starty_safe = FFMAX(s1y, s2y); |
| const int u_endx_safe = FFMIN(s1x + w, s2x + w); // unaligned |
| const int endy_safe = FFMIN(s1y + h, s2y + h); |
| |
| // deduce the safe area width and height |
| const int safe_pw = (u_endx_safe - startx_safe) & ~0xf; |
| const int safe_ph = endy_safe - starty_safe; |
| |
| // adjusted end x position of the safe area after width of the safe area gets aligned |
| const int endx_safe = startx_safe + safe_pw; |
| |
| // top part where only one of s1 and s2 is still readable, or none at all |
| compute_unsafe_ssd_integral_image(ii, ii_linesize_32, |
| 0, 0, |
| src, linesize, |
| offx, offy, e, w, h, |
| ii_w, starty_safe); |
| |
| // fill the left column integral required to compute the central |
| // overlapping one |
| compute_unsafe_ssd_integral_image(ii, ii_linesize_32, |
| 0, starty_safe, |
| src, linesize, |
| offx, offy, e, w, h, |
| startx_safe, safe_ph); |
| |
| // main and safe part of the integral |
| av_assert1(startx_safe - s1x >= 0); av_assert1(startx_safe - s1x < w); |
| av_assert1(starty_safe - s1y >= 0); av_assert1(starty_safe - s1y < h); |
| av_assert1(startx_safe - s2x >= 0); av_assert1(startx_safe - s2x < w); |
| av_assert1(starty_safe - s2y >= 0); av_assert1(starty_safe - s2y < h); |
| if (safe_pw && safe_ph) |
| dsp->compute_safe_ssd_integral_image(ii + starty_safe*ii_linesize_32 + startx_safe, ii_linesize_32, |
| src + (starty_safe - s1y) * linesize + (startx_safe - s1x), linesize, |
| src + (starty_safe - s2y) * linesize + (startx_safe - s2x), linesize, |
| safe_pw, safe_ph); |
| |
| // right part of the integral |
| compute_unsafe_ssd_integral_image(ii, ii_linesize_32, |
| endx_safe, starty_safe, |
| src, linesize, |
| offx, offy, e, w, h, |
| ii_w - endx_safe, safe_ph); |
| |
| // bottom part where only one of s1 and s2 is still readable, or none at all |
| compute_unsafe_ssd_integral_image(ii, ii_linesize_32, |
| 0, endy_safe, |
| src, linesize, |
| offx, offy, e, w, h, |
| ii_w, ii_h - endy_safe); |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| NLMeansContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| const int e = FFMAX(s->research_hsize, s->research_hsize_uv) |
| + FFMAX(s->patch_hsize, s->patch_hsize_uv); |
| |
| s->chroma_w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
| s->chroma_h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
| s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| |
| /* Allocate the integral image with extra edges of thickness "e" |
| * |
| * +_+-------------------------------+ |
| * |0|0000000000000000000000000000000| |
| * +-x-------------------------------+ |
| * |0|\ ^ | |
| * |0| ii | e | |
| * |0| v | |
| * |0| +-----------------------+ | |
| * |0| | | | |
| * |0|<->| | | |
| * |0| e | | | |
| * |0| | | | |
| * |0| +-----------------------+ | |
| * |0| | |
| * |0| | |
| * |0| | |
| * +-+-------------------------------+ |
| */ |
| s->ii_w = inlink->w + e*2; |
| s->ii_h = inlink->h + e*2; |
| |
| // align to 4 the linesize, "+1" is for the space of the left 0-column |
| s->ii_lz_32 = FFALIGN(s->ii_w + 1, 4); |
| |
| // "+1" is for the space of the top 0-line |
| s->ii_orig = av_mallocz_array(s->ii_h + 1, s->ii_lz_32 * sizeof(*s->ii_orig)); |
| if (!s->ii_orig) |
| return AVERROR(ENOMEM); |
| |
| // skip top 0-line and left 0-column |
| s->ii = s->ii_orig + s->ii_lz_32 + 1; |
| |
| // allocate weighted average for every pixel |
| s->wa_linesize = inlink->w; |
| s->wa = av_malloc_array(s->wa_linesize, inlink->h * sizeof(*s->wa)); |
| if (!s->wa) |
| return AVERROR(ENOMEM); |
| |
| return 0; |
| } |
| |
| struct thread_data { |
| const uint8_t *src; |
| ptrdiff_t src_linesize; |
| int startx, starty; |
| int endx, endy; |
| const uint32_t *ii_start; |
| int p; |
| }; |
| |
| static int nlmeans_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| int x, y; |
| NLMeansContext *s = ctx->priv; |
| const struct thread_data *td = arg; |
| const ptrdiff_t src_linesize = td->src_linesize; |
| const int process_h = td->endy - td->starty; |
| const int slice_start = (process_h * jobnr ) / nb_jobs; |
| const int slice_end = (process_h * (jobnr+1)) / nb_jobs; |
| const int starty = td->starty + slice_start; |
| const int endy = td->starty + slice_end; |
| const int p = td->p; |
| const uint32_t *ii = td->ii_start + (starty - p - 1) * s->ii_lz_32 - p - 1; |
| const int dist_b = 2*p + 1; |
| const int dist_d = dist_b * s->ii_lz_32; |
| const int dist_e = dist_d + dist_b; |
| |
| for (y = starty; y < endy; y++) { |
| const uint8_t *src = td->src + y*src_linesize; |
| struct weighted_avg *wa = s->wa + y*s->wa_linesize; |
| for (x = td->startx; x < td->endx; x++) { |
| /* |
| * M is a discrete map where every entry contains the sum of all the entries |
| * in the rectangle from the top-left origin of M to its coordinate. In the |
| * following schema, "i" contains the sum of the whole map: |
| * |
| * M = +----------+-----------------+----+ |
| * | | | | |
| * | | | | |
| * | a| b| c| |
| * +----------+-----------------+----+ |
| * | | | | |
| * | | | | |
| * | | X | | |
| * | | | | |
| * | d| e| f| |
| * +----------+-----------------+----+ |
| * | | | | |
| * | g| h| i| |
| * +----------+-----------------+----+ |
| * |
| * The sum of the X box can be calculated with: |
| * X = e-d-b+a |
| * |
| * See https://en.wikipedia.org/wiki/Summed_area_table |
| * |
| * The compute*_ssd functions compute the integral image M where every entry |
| * contains the sum of the squared difference of every corresponding pixels of |
| * two input planes of the same size as M. |
| */ |
| const uint32_t a = ii[x]; |
| const uint32_t b = ii[x + dist_b]; |
| const uint32_t d = ii[x + dist_d]; |
| const uint32_t e = ii[x + dist_e]; |
| const uint32_t patch_diff_sq = e - d - b + a; |
| |
| if (patch_diff_sq < s->max_meaningful_diff) { |
| const float weight = s->weight_lut[patch_diff_sq]; // exp(-patch_diff_sq * s->pdiff_scale) |
| wa[x].total_weight += weight; |
| wa[x].sum += weight * src[x]; |
| } |
| } |
| ii += s->ii_lz_32; |
| } |
| return 0; |
| } |
| |
| static void weight_averages(uint8_t *dst, ptrdiff_t dst_linesize, |
| const uint8_t *src, ptrdiff_t src_linesize, |
| struct weighted_avg *wa, ptrdiff_t wa_linesize, |
| int w, int h) |
| { |
| int x, y; |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x++) { |
| // Also weight the centered pixel |
| wa[x].total_weight += 1.f; |
| wa[x].sum += 1.f * src[x]; |
| dst[x] = av_clip_uint8(wa[x].sum / wa[x].total_weight + 0.5f); |
| } |
| dst += dst_linesize; |
| src += src_linesize; |
| wa += wa_linesize; |
| } |
| } |
| |
| static int nlmeans_plane(AVFilterContext *ctx, int w, int h, int p, int r, |
| uint8_t *dst, ptrdiff_t dst_linesize, |
| const uint8_t *src, ptrdiff_t src_linesize) |
| { |
| int offx, offy; |
| NLMeansContext *s = ctx->priv; |
| /* patches center points cover the whole research window so the patches |
| * themselves overflow the research window */ |
| const int e = r + p; |
| /* focus an integral pointer on the centered image (s1) */ |
| const uint32_t *centered_ii = s->ii + e*s->ii_lz_32 + e; |
| |
| memset(s->wa, 0, s->wa_linesize * h * sizeof(*s->wa)); |
| |
| for (offy = -r; offy <= r; offy++) { |
| for (offx = -r; offx <= r; offx++) { |
| if (offx || offy) { |
| struct thread_data td = { |
| .src = src + offy*src_linesize + offx, |
| .src_linesize = src_linesize, |
| .startx = FFMAX(0, -offx), |
| .starty = FFMAX(0, -offy), |
| .endx = FFMIN(w, w - offx), |
| .endy = FFMIN(h, h - offy), |
| .ii_start = centered_ii + offy*s->ii_lz_32 + offx, |
| .p = p, |
| }; |
| |
| compute_ssd_integral_image(&s->dsp, s->ii, s->ii_lz_32, |
| src, src_linesize, |
| offx, offy, e, w, h); |
| ctx->internal->execute(ctx, nlmeans_slice, &td, NULL, |
| FFMIN(td.endy - td.starty, ff_filter_get_nb_threads(ctx))); |
| } |
| } |
| } |
| |
| weight_averages(dst, dst_linesize, src, src_linesize, |
| s->wa, s->wa_linesize, w, h); |
| |
| return 0; |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| int i; |
| AVFilterContext *ctx = inlink->dst; |
| NLMeansContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| |
| AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| av_frame_free(&in); |
| return AVERROR(ENOMEM); |
| } |
| av_frame_copy_props(out, in); |
| |
| for (i = 0; i < s->nb_planes; i++) { |
| const int w = i ? s->chroma_w : inlink->w; |
| const int h = i ? s->chroma_h : inlink->h; |
| const int p = i ? s->patch_hsize_uv : s->patch_hsize; |
| const int r = i ? s->research_hsize_uv : s->research_hsize; |
| nlmeans_plane(ctx, w, h, p, r, |
| out->data[i], out->linesize[i], |
| in->data[i], in->linesize[i]); |
| } |
| |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| #define CHECK_ODD_FIELD(field, name) do { \ |
| if (!(s->field & 1)) { \ |
| s->field |= 1; \ |
| av_log(ctx, AV_LOG_WARNING, name " size must be odd, " \ |
| "setting it to %d\n", s->field); \ |
| } \ |
| } while (0) |
| |
| void ff_nlmeans_init(NLMeansDSPContext *dsp) |
| { |
| dsp->compute_safe_ssd_integral_image = compute_safe_ssd_integral_image_c; |
| |
| if (ARCH_AARCH64) |
| ff_nlmeans_init_aarch64(dsp); |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| int i; |
| NLMeansContext *s = ctx->priv; |
| const double h = s->sigma * 10.; |
| |
| s->pdiff_scale = 1. / (h * h); |
| s->max_meaningful_diff = log(255.) / s->pdiff_scale; |
| s->weight_lut = av_calloc(s->max_meaningful_diff, sizeof(*s->weight_lut)); |
| if (!s->weight_lut) |
| return AVERROR(ENOMEM); |
| for (i = 0; i < s->max_meaningful_diff; i++) |
| s->weight_lut[i] = exp(-i * s->pdiff_scale); |
| |
| CHECK_ODD_FIELD(research_size, "Luma research window"); |
| CHECK_ODD_FIELD(patch_size, "Luma patch"); |
| |
| if (!s->research_size_uv) s->research_size_uv = s->research_size; |
| if (!s->patch_size_uv) s->patch_size_uv = s->patch_size; |
| |
| CHECK_ODD_FIELD(research_size_uv, "Chroma research window"); |
| CHECK_ODD_FIELD(patch_size_uv, "Chroma patch"); |
| |
| s->research_hsize = s->research_size / 2; |
| s->research_hsize_uv = s->research_size_uv / 2; |
| s->patch_hsize = s->patch_size / 2; |
| s->patch_hsize_uv = s->patch_size_uv / 2; |
| |
| av_log(ctx, AV_LOG_INFO, "Research window: %dx%d / %dx%d, patch size: %dx%d / %dx%d\n", |
| s->research_size, s->research_size, s->research_size_uv, s->research_size_uv, |
| s->patch_size, s->patch_size, s->patch_size_uv, s->patch_size_uv); |
| |
| ff_nlmeans_init(&s->dsp); |
| |
| return 0; |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| NLMeansContext *s = ctx->priv; |
| av_freep(&s->weight_lut); |
| av_freep(&s->ii_orig); |
| av_freep(&s->wa); |
| } |
| |
| static const AVFilterPad nlmeans_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad nlmeans_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_nlmeans = { |
| .name = "nlmeans", |
| .description = NULL_IF_CONFIG_SMALL("Non-local means denoiser."), |
| .priv_size = sizeof(NLMeansContext), |
| .init = init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = nlmeans_inputs, |
| .outputs = nlmeans_outputs, |
| .priv_class = &nlmeans_class, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
