git.sesse.net Git - ffmpeg/blob - libavfilter/vf_atadenoise.c

   1 /*
   2  * Copyright (c) 2015 Paul B Mahol
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * Adaptive Temporal Averaging Denoiser,
  24  * based on paper "Video Denoising Based on Adaptive Temporal Averaging" by
  25  * David Bartovčak and Miroslav Vrankić
  26  */
  27
  28 #include "libavutil/imgutils.h"
  29 #include "libavutil/opt.h"
  30 #include "libavutil/pixdesc.h"
  31 #include "avfilter.h"
  32
  33 #define FF_BUFQUEUE_SIZE 129
  34 #include "bufferqueue.h"
  35
  36 #include "atadenoise.h"
  37 #include "formats.h"
  38 #include "internal.h"
  39 #include "video.h"
  40
  41 #define SIZE FF_BUFQUEUE_SIZE
  42
  43 typedef struct ATADenoiseContext {
  44     const AVClass *class;
  45
  46     float fthra[4], fthrb[4];
  47     float sigma[4];
  48     int thra[4], thrb[4];
  49     int algorithm;
  50
  51     int planes;
  52     int nb_planes;
  53     int planewidth[4];
  54     int planeheight[4];
  55
  56     struct FFBufQueue q;
  57     void *data[4][SIZE];
  58     int linesize[4][SIZE];
  59     float weights[4][SIZE];
  60     int size, mid, radius;
  61     int available;
  62
  63     int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
  64
  65     ATADenoiseDSPContext dsp;
  66 } ATADenoiseContext;
  67
  68 #define OFFSET(x) offsetof(ATADenoiseContext, x)
  69 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
  70 #define VF AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
  71
  72 static const AVOption atadenoise_options[] = {
  73     { "0a", "set threshold A for 1st plane", OFFSET(fthra[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0, 0.3, FLAGS },
  74     { "0b", "set threshold B for 1st plane", OFFSET(fthrb[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.04}, 0, 5.0, FLAGS },
  75     { "1a", "set threshold A for 2nd plane", OFFSET(fthra[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0, 0.3, FLAGS },
  76     { "1b", "set threshold B for 2nd plane", OFFSET(fthrb[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.04}, 0, 5.0, FLAGS },
  77     { "2a", "set threshold A for 3rd plane", OFFSET(fthra[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0, 0.3, FLAGS },
  78     { "2b", "set threshold B for 3rd plane", OFFSET(fthrb[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.04}, 0, 5.0, FLAGS },
  79     { "s",  "set how many frames to use",    OFFSET(size),     AV_OPT_TYPE_INT,   {.i64=9},   5, SIZE, VF    },
  80     { "p",  "set what planes to filter",     OFFSET(planes),   AV_OPT_TYPE_FLAGS, {.i64=7},    0, 15,  FLAGS },
  81     { "a",  "set variant of algorithm",      OFFSET(algorithm),AV_OPT_TYPE_INT,   {.i64=PARALLEL},  0, NB_ATAA-1, FLAGS, "a" },
  82     { "p",  "parallel",                      0,                AV_OPT_TYPE_CONST, {.i64=PARALLEL},  0, 0,         FLAGS, "a" },
  83     { "s",  "serial",                        0,                AV_OPT_TYPE_CONST, {.i64=SERIAL},    0, 0,         FLAGS, "a" },
  84     { "0s", "set sigma for 1st plane",       OFFSET(sigma[0]), AV_OPT_TYPE_FLOAT, {.dbl=INT16_MAX}, 0, INT16_MAX, FLAGS },
  85     { "1s", "set sigma for 2nd plane",       OFFSET(sigma[1]), AV_OPT_TYPE_FLOAT, {.dbl=INT16_MAX}, 0, INT16_MAX, FLAGS },
  86     { "2s", "set sigma for 3rd plane",       OFFSET(sigma[2]), AV_OPT_TYPE_FLOAT, {.dbl=INT16_MAX}, 0, INT16_MAX, FLAGS },
  87     { NULL }
  88 };
  89
  90 AVFILTER_DEFINE_CLASS(atadenoise);
  91
  92 static int query_formats(AVFilterContext *ctx)
  93 {
  94     static const enum AVPixelFormat pixel_fmts[] = {
  95         AV_PIX_FMT_GRAY8,
  96         AV_PIX_FMT_GRAY9,
  97         AV_PIX_FMT_GRAY10,
  98         AV_PIX_FMT_GRAY12,
  99         AV_PIX_FMT_GRAY14,
 100         AV_PIX_FMT_GRAY16,
 101         AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
 102         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
 103         AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
 104         AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
 105         AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
 106         AV_PIX_FMT_YUVJ411P,
 107         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
 108         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
 109         AV_PIX_FMT_YUV440P10,
 110         AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
 111         AV_PIX_FMT_YUV440P12,
 112         AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
 113         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
 114         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
 115         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
 116         AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,   AV_PIX_FMT_YUVA444P,
 117         AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
 118         AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
 119         AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
 120         AV_PIX_FMT_GBRAP,     AV_PIX_FMT_GBRAP10,    AV_PIX_FMT_GBRAP12,    AV_PIX_FMT_GBRAP16,
 121         AV_PIX_FMT_NONE
 122     };
 123     AVFilterFormats *formats = ff_make_format_list(pixel_fmts);
 124     if (!formats)
 125         return AVERROR(ENOMEM);
 126     return ff_set_common_formats(ctx, formats);
 127 }
 128
 129 static av_cold int init(AVFilterContext *ctx)
 130 {
 131     ATADenoiseContext *s = ctx->priv;
 132
 133     if (!(s->size & 1)) {
 134         av_log(ctx, AV_LOG_WARNING, "size %d is invalid. Must be an odd value, setting it to %d.\n", s->size, s->size|1);
 135         s->size |= 1;
 136     }
 137     s->radius = s->size / 2;
 138     s->mid = s->radius;
 139
 140     return 0;
 141 }
 142
 143 typedef struct ThreadData {
 144     AVFrame *in, *out;
 145 } ThreadData;
 146
 147 #define WFILTER_ROW(type, name)                                             \
 148 static void fweight_row##name(const uint8_t *ssrc, uint8_t *ddst,           \
 149                               const uint8_t *ssrcf[SIZE],                   \
 150                               int w, int mid, int size,                     \
 151                               int thra, int thrb, const float *weights)     \
 152 {                                                                           \
 153     const type *src = (const type *)ssrc;                                   \
 154     const type **srcf = (const type **)ssrcf;                               \
 155     type *dst = (type *)ddst;                                               \
 156                                                                             \
 157     for (int x = 0; x < w; x++) {                                           \
 158        const int srcx = src[x];                                             \
 159        unsigned lsumdiff = 0, rsumdiff = 0;                                 \
 160        unsigned ldiff, rdiff;                                               \
 161        float sum = srcx;                                                    \
 162        float wsum = 1.f;                                                    \
 163        int l = 0, r = 0;                                                    \
 164        int srcjx, srcix;                                                    \
 165                                                                             \
 166        for (int j = mid - 1, i = mid + 1; j >= 0 && i < size; j--, i++) {   \
 167            srcjx = srcf[j][x];                                              \
 168                                                                             \
 169            ldiff = FFABS(srcx - srcjx);                                     \
 170            lsumdiff += ldiff;                                               \
 171            if (ldiff > thra ||                                              \
 172                lsumdiff > thrb)                                             \
 173                break;                                                       \
 174            l++;                                                             \
 175            sum += srcjx * weights[j];                                       \
 176            wsum += weights[j];                                              \
 177                                                                             \
 178            srcix = srcf[i][x];                                              \
 179                                                                             \
 180            rdiff = FFABS(srcx - srcix);                                     \
 181            rsumdiff += rdiff;                                               \
 182            if (rdiff > thra ||                                              \
 183                rsumdiff > thrb)                                             \
 184                break;                                                       \
 185            r++;                                                             \
 186            sum += srcix * weights[i];                                       \
 187            wsum += weights[i];                                              \
 188        }                                                                    \
 189                                                                             \
 190        dst[x] = lrintf(sum / wsum);                                         \
 191    }                                                                        \
 192 }
 193
 194 WFILTER_ROW(uint8_t, 8)
 195 WFILTER_ROW(uint16_t, 16)
 196
 197 #define WFILTER_ROW_SERIAL(type, name)                                      \
 198 static void fweight_row##name##_serial(const uint8_t *ssrc, uint8_t *ddst,  \
 199                                        const uint8_t *ssrcf[SIZE],          \
 200                                        int w, int mid, int size,            \
 201                                        int thra, int thrb,                  \
 202                                        const float *weights)                \
 203 {                                                                           \
 204     const type *src = (const type *)ssrc;                                   \
 205     const type **srcf = (const type **)ssrcf;                               \
 206     type *dst = (type *)ddst;                                               \
 207                                                                             \
 208     for (int x = 0; x < w; x++) {                                           \
 209        const int srcx = src[x];                                             \
 210        unsigned lsumdiff = 0, rsumdiff = 0;                                 \
 211        unsigned ldiff, rdiff;                                               \
 212        float sum = srcx;                                                    \
 213        float wsum = 1.f;                                                    \
 214        int l = 0, r = 0;                                                    \
 215        int srcjx, srcix;                                                    \
 216                                                                             \
 217        for (int j = mid - 1; j >= 0; j--) {                                 \
 218            srcjx = srcf[j][x];                                              \
 219                                                                             \
 220            ldiff = FFABS(srcx - srcjx);                                     \
 221            lsumdiff += ldiff;                                               \
 222            if (ldiff > thra ||                                              \
 223                lsumdiff > thrb)                                             \
 224                break;                                                       \
 225            l++;                                                             \
 226            sum += srcjx * weights[j];                                       \
 227            wsum += weights[j];                                              \
 228        }                                                                    \
 229                                                                             \
 230        for (int i = mid + 1; i < size; i++) {                               \
 231            srcix = srcf[i][x];                                              \
 232                                                                             \
 233            rdiff = FFABS(srcx - srcix);                                     \
 234            rsumdiff += rdiff;                                               \
 235            if (rdiff > thra ||                                              \
 236                rsumdiff > thrb)                                             \
 237                break;                                                       \
 238            r++;                                                             \
 239            sum += srcix * weights[i];                                       \
 240            wsum += weights[i];                                              \
 241        }                                                                    \
 242                                                                             \
 243        dst[x] = lrintf(sum / wsum);                                         \
 244    }                                                                        \
 245 }
 246
 247 WFILTER_ROW_SERIAL(uint8_t, 8)
 248 WFILTER_ROW_SERIAL(uint16_t, 16)
 249
 250 #define FILTER_ROW(type, name)                                              \
 251 static void filter_row##name(const uint8_t *ssrc, uint8_t *ddst,            \
 252                              const uint8_t *ssrcf[SIZE],                    \
 253                              int w, int mid, int size,                      \
 254                              int thra, int thrb, const float *weights)      \
 255 {                                                                           \
 256     const type *src = (const type *)ssrc;                                   \
 257     const type **srcf = (const type **)ssrcf;                               \
 258     type *dst = (type *)ddst;                                               \
 259                                                                             \
 260     for (int x = 0; x < w; x++) {                                           \
 261        const int srcx = src[x];                                             \
 262        unsigned lsumdiff = 0, rsumdiff = 0;                                 \
 263        unsigned ldiff, rdiff;                                               \
 264        unsigned sum = srcx;                                                 \
 265        int l = 0, r = 0;                                                    \
 266        int srcjx, srcix;                                                    \
 267                                                                             \
 268        for (int j = mid - 1, i = mid + 1; j >= 0 && i < size; j--, i++) {   \
 269            srcjx = srcf[j][x];                                              \
 270                                                                             \
 271            ldiff = FFABS(srcx - srcjx);                                     \
 272            lsumdiff += ldiff;                                               \
 273            if (ldiff > thra ||                                              \
 274                lsumdiff > thrb)                                             \
 275                break;                                                       \
 276            l++;                                                             \
 277            sum += srcjx;                                                    \
 278                                                                             \
 279            srcix = srcf[i][x];                                              \
 280                                                                             \
 281            rdiff = FFABS(srcx - srcix);                                     \
 282            rsumdiff += rdiff;                                               \
 283            if (rdiff > thra ||                                              \
 284                rsumdiff > thrb)                                             \
 285                break;                                                       \
 286            r++;                                                             \
 287            sum += srcix;                                                    \
 288        }                                                                    \
 289                                                                             \
 290        dst[x] = (sum + ((r + l + 1) >> 1)) / (r + l + 1);                   \
 291    }                                                                        \
 292 }
 293
 294 FILTER_ROW(uint8_t, 8)
 295 FILTER_ROW(uint16_t, 16)
 296
 297 #define FILTER_ROW_SERIAL(type, name)                                       \
 298 static void filter_row##name##_serial(const uint8_t *ssrc, uint8_t *ddst,   \
 299                                       const uint8_t *ssrcf[SIZE],           \
 300                                       int w, int mid, int size,             \
 301                                       int thra, int thrb,                   \
 302                                       const float *weights)                 \
 303 {                                                                           \
 304     const type *src = (const type *)ssrc;                                   \
 305     const type **srcf = (const type **)ssrcf;                               \
 306     type *dst = (type *)ddst;                                               \
 307                                                                             \
 308     for (int x = 0; x < w; x++) {                                           \
 309        const int srcx = src[x];                                             \
 310        unsigned lsumdiff = 0, rsumdiff = 0;                                 \
 311        unsigned ldiff, rdiff;                                               \
 312        unsigned sum = srcx;                                                 \
 313        int l = 0, r = 0;                                                    \
 314        int srcjx, srcix;                                                    \
 315                                                                             \
 316        for (int j = mid - 1; j >= 0; j--) {                                 \
 317            srcjx = srcf[j][x];                                              \
 318                                                                             \
 319            ldiff = FFABS(srcx - srcjx);                                     \
 320            lsumdiff += ldiff;                                               \
 321            if (ldiff > thra ||                                              \
 322                lsumdiff > thrb)                                             \
 323                break;                                                       \
 324            l++;                                                             \
 325            sum += srcjx;                                                    \
 326        }                                                                    \
 327                                                                             \
 328        for (int i = mid + 1; i < size; i++) {                               \
 329            srcix = srcf[i][x];                                              \
 330                                                                             \
 331            rdiff = FFABS(srcx - srcix);                                     \
 332            rsumdiff += rdiff;                                               \
 333            if (rdiff > thra ||                                              \
 334                rsumdiff > thrb)                                             \
 335                break;                                                       \
 336            r++;                                                             \
 337            sum += srcix;                                                    \
 338        }                                                                    \
 339                                                                             \
 340        dst[x] = (sum + ((r + l + 1) >> 1)) / (r + l + 1);                   \
 341    }                                                                        \
 342 }
 343
 344 FILTER_ROW_SERIAL(uint8_t, 8)
 345 FILTER_ROW_SERIAL(uint16_t, 16)
 346
 347 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 348 {
 349     ATADenoiseContext *s = ctx->priv;
 350     ThreadData *td = arg;
 351     AVFrame *in = td->in;
 352     AVFrame *out = td->out;
 353     const int size = s->size;
 354     const int mid = s->mid;
 355     int p, y, i;
 356
 357     for (p = 0; p < s->nb_planes; p++) {
 358         const float *weights = s->weights[p];
 359         const int h = s->planeheight[p];
 360         const int w = s->planewidth[p];
 361         const int slice_start = (h * jobnr) / nb_jobs;
 362         const int slice_end = (h * (jobnr+1)) / nb_jobs;
 363         const uint8_t *src = in->data[p] + slice_start * in->linesize[p];
 364         uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
 365         const int thra = s->thra[p];
 366         const int thrb = s->thrb[p];
 367         const uint8_t **data = (const uint8_t **)s->data[p];
 368         const int *linesize = (const int *)s->linesize[p];
 369         const uint8_t *srcf[SIZE];
 370
 371         if (!((1 << p) & s->planes)) {
 372             av_image_copy_plane(dst, out->linesize[p], src, in->linesize[p],
 373                                 w, slice_end - slice_start);
 374             continue;
 375         }
 376
 377         for (i = 0; i < size; i++)
 378             srcf[i] = data[i] + slice_start * linesize[i];
 379
 380         for (y = slice_start; y < slice_end; y++) {
 381             s->dsp.filter_row[p](src, dst, srcf, w, mid, size, thra, thrb, weights);
 382
 383             dst += out->linesize[p];
 384             src += in->linesize[p];
 385
 386             for (i = 0; i < size; i++)
 387                 srcf[i] += linesize[i];
 388         }
 389     }
 390
 391     return 0;
 392 }
 393
 394 static int config_input(AVFilterLink *inlink)
 395 {
 396     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
 397     AVFilterContext *ctx = inlink->dst;
 398     ATADenoiseContext *s = ctx->priv;
 399     int depth;
 400
 401     s->nb_planes = desc->nb_components;
 402
 403     s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
 404     s->planeheight[0] = s->planeheight[3] = inlink->h;
 405     s->planewidth[1]  = s->planewidth[2]  = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
 406     s->planewidth[0]  = s->planewidth[3]  = inlink->w;
 407
 408     depth = desc->comp[0].depth;
 409     s->filter_slice = filter_slice;
 410
 411     for (int p = 0; p < s->nb_planes; p++) {
 412         if (depth == 8 && s->sigma[p] == INT16_MAX)
 413             s->dsp.filter_row[p] = s->algorithm == PARALLEL ? filter_row8 : filter_row8_serial;
 414         else if (s->sigma[p] == INT16_MAX)
 415             s->dsp.filter_row[p] = s->algorithm == PARALLEL ? filter_row16 : filter_row16_serial;
 416         else if (depth == 8 && s->sigma[p] < INT16_MAX)
 417             s->dsp.filter_row[p] = s->algorithm == PARALLEL ? fweight_row8 : fweight_row8_serial;
 418         else if (s->sigma[p] < INT16_MAX)
 419             s->dsp.filter_row[p] = s->algorithm == PARALLEL ? fweight_row16 : fweight_row16_serial;
 420     }
 421
 422     s->thra[0] = s->fthra[0] * (1 << depth) - 1;
 423     s->thra[1] = s->fthra[1] * (1 << depth) - 1;
 424     s->thra[2] = s->fthra[2] * (1 << depth) - 1;
 425     s->thrb[0] = s->fthrb[0] * (1 << depth) - 1;
 426     s->thrb[1] = s->fthrb[1] * (1 << depth) - 1;
 427     s->thrb[2] = s->fthrb[2] * (1 << depth) - 1;
 428
 429     for (int p = 0; p < s->nb_planes; p++) {
 430         float sigma = s->radius * s->sigma[p];
 431
 432         s->weights[p][s->radius] = 1.f;
 433         for (int n = 1; n <= s->radius; n++) {
 434             s->weights[p][s->radius + n] =
 435             s->weights[p][s->radius - n] = expf(-0.5 * (n + 1) * (n + 1) / (sigma * sigma));
 436         }
 437     }
 438
 439     if (ARCH_X86)
 440         ff_atadenoise_init_x86(&s->dsp, depth, s->algorithm, s->sigma);
 441
 442     return 0;
 443 }
 444
 445 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
 446 {
 447     AVFilterContext *ctx = inlink->dst;
 448     AVFilterLink *outlink = ctx->outputs[0];
 449     ATADenoiseContext *s = ctx->priv;
 450     AVFrame *out, *in;
 451     int i;
 452
 453     if (s->q.available != s->size) {
 454         if (s->q.available < s->mid) {
 455             for (i = 0; i < s->mid; i++) {
 456                 out = av_frame_clone(buf);
 457                 if (!out) {
 458                     av_frame_free(&buf);
 459                     return AVERROR(ENOMEM);
 460                 }
 461                 ff_bufqueue_add(ctx, &s->q, out);
 462             }
 463         }
 464         if (s->q.available < s->size) {
 465             ff_bufqueue_add(ctx, &s->q, buf);
 466             s->available++;
 467         }
 468         return 0;
 469     }
 470
 471     in = ff_bufqueue_peek(&s->q, s->mid);
 472
 473     if (!ctx->is_disabled) {
 474         ThreadData td;
 475
 476         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
 477         if (!out) {
 478             av_frame_free(&buf);
 479             return AVERROR(ENOMEM);
 480         }
 481
 482         for (i = 0; i < s->size; i++) {
 483             AVFrame *frame = ff_bufqueue_peek(&s->q, i);
 484
 485             s->data[0][i] = frame->data[0];
 486             s->data[1][i] = frame->data[1];
 487             s->data[2][i] = frame->data[2];
 488             s->linesize[0][i] = frame->linesize[0];
 489             s->linesize[1][i] = frame->linesize[1];
 490             s->linesize[2][i] = frame->linesize[2];
 491         }
 492
 493         td.in = in; td.out = out;
 494         ctx->internal->execute(ctx, s->filter_slice, &td, NULL,
 495                                FFMIN3(s->planeheight[1],
 496                                       s->planeheight[2],
 497                                       ff_filter_get_nb_threads(ctx)));
 498         av_frame_copy_props(out, in);
 499     } else {
 500         out = av_frame_clone(in);
 501         if (!out) {
 502             av_frame_free(&buf);
 503             return AVERROR(ENOMEM);
 504         }
 505     }
 506
 507     in = ff_bufqueue_get(&s->q);
 508     av_frame_free(&in);
 509     ff_bufqueue_add(ctx, &s->q, buf);
 510
 511     return ff_filter_frame(outlink, out);
 512 }
 513
 514 static int request_frame(AVFilterLink *outlink)
 515 {
 516     AVFilterContext *ctx = outlink->src;
 517     ATADenoiseContext *s = ctx->priv;
 518     int ret = 0;
 519
 520     ret = ff_request_frame(ctx->inputs[0]);
 521
 522     if (ret == AVERROR_EOF && !ctx->is_disabled && s->available) {
 523         AVFrame *buf = av_frame_clone(ff_bufqueue_peek(&s->q, s->available));
 524         if (!buf)
 525             return AVERROR(ENOMEM);
 526
 527         ret = filter_frame(ctx->inputs[0], buf);
 528         s->available--;
 529     }
 530
 531     return ret;
 532 }
 533
 534 static av_cold void uninit(AVFilterContext *ctx)
 535 {
 536     ATADenoiseContext *s = ctx->priv;
 537
 538     ff_bufqueue_discard_all(&s->q);
 539 }
 540
 541 static int process_command(AVFilterContext *ctx,
 542                            const char *cmd,
 543                            const char *arg,
 544                            char *res,
 545                            int res_len,
 546                            int flags)
 547 {
 548     int ret = ff_filter_process_command(ctx, cmd, arg, res, res_len, flags);
 549
 550     if (ret < 0)
 551         return ret;
 552
 553     return config_input(ctx->inputs[0]);
 554 }
 555
 556 static const AVFilterPad inputs[] = {
 557     {
 558         .name         = "default",
 559         .type         = AVMEDIA_TYPE_VIDEO,
 560         .filter_frame = filter_frame,
 561         .config_props = config_input,
 562     },
 563     { NULL }
 564 };
 565
 566 static const AVFilterPad outputs[] = {
 567     {
 568         .name          = "default",
 569         .type          = AVMEDIA_TYPE_VIDEO,
 570         .request_frame = request_frame,
 571     },
 572     { NULL }
 573 };
 574
 575 AVFilter ff_vf_atadenoise = {
 576     .name          = "atadenoise",
 577     .description   = NULL_IF_CONFIG_SMALL("Apply an Adaptive Temporal Averaging Denoiser."),
 578     .priv_size     = sizeof(ATADenoiseContext),
 579     .priv_class    = &atadenoise_class,
 580     .init          = init,
 581     .uninit        = uninit,
 582     .query_formats = query_formats,
 583     .inputs        = inputs,
 584     .outputs       = outputs,
 585     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
 586     .process_command = process_command,
 587 };