LCOV - code coverage report
Current view: top level - libavfilter - vf_deband.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 217 0.0 %
Date: 2017-12-14 01:15:32 Functions: 0 10 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2015 Niklas Haas
       3             :  * Copyright (c) 2015 Paul B Mahol
       4             :  *
       5             :  * Permission is hereby granted, free of charge, to any person obtaining a copy
       6             :  * of this software and associated documentation files (the "Software"), to deal
       7             :  * in the Software without restriction, including without limitation the rights
       8             :  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       9             :  * copies of the Software, and to permit persons to whom the Software is
      10             :  * furnished to do so, subject to the following conditions:
      11             :  *
      12             :  * The above copyright notice and this permission notice shall be included in
      13             :  * all copies or substantial portions of the Software.
      14             :  *
      15             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      16             :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      17             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      18             :  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      19             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      20             :  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      21             :  * SOFTWARE.
      22             :  */
      23             : 
      24             : #include "libavutil/opt.h"
      25             : #include "libavutil/pixdesc.h"
      26             : #include "avfilter.h"
      27             : #include "internal.h"
      28             : #include "video.h"
      29             : 
      30             : typedef struct DebandContext {
      31             :     const AVClass *class;
      32             : 
      33             :     int coupling;
      34             :     float threshold[4];
      35             :     int range;
      36             :     int blur;
      37             :     float direction;
      38             : 
      39             :     int nb_components;
      40             :     int planewidth[4];
      41             :     int planeheight[4];
      42             :     int shift[2];
      43             :     int thr[4];
      44             : 
      45             :     int *x_pos;
      46             :     int *y_pos;
      47             : 
      48             :     int (*deband)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
      49             : } DebandContext;
      50             : 
      51             : #define OFFSET(x) offsetof(DebandContext, x)
      52             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      53             : 
      54             : static const AVOption deband_options[] = {
      55             :     { "1thr",      "set 1st plane threshold", OFFSET(threshold[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.02},  0.00003,     0.5, FLAGS },
      56             :     { "2thr",      "set 2nd plane threshold", OFFSET(threshold[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.02},  0.00003,     0.5, FLAGS },
      57             :     { "3thr",      "set 3rd plane threshold", OFFSET(threshold[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.02},  0.00003,     0.5, FLAGS },
      58             :     { "4thr",      "set 4th plane threshold", OFFSET(threshold[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.02},  0.00003,     0.5, FLAGS },
      59             :     { "range",     "set range",               OFFSET(range),        AV_OPT_TYPE_INT,   {.i64=16},    INT_MIN, INT_MAX, FLAGS },
      60             :     { "r",         "set range",               OFFSET(range),        AV_OPT_TYPE_INT,   {.i64=16},    INT_MIN, INT_MAX, FLAGS },
      61             :     { "direction", "set direction",           OFFSET(direction),    AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI,  2*M_PI, FLAGS },
      62             :     { "d",         "set direction",           OFFSET(direction),    AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI,  2*M_PI, FLAGS },
      63             :     { "blur",      "set blur",                OFFSET(blur),         AV_OPT_TYPE_BOOL,  {.i64=1},           0,       1, FLAGS },
      64             :     { "b",         "set blur",                OFFSET(blur),         AV_OPT_TYPE_BOOL,  {.i64=1},           0,       1, FLAGS },
      65             :     { "coupling",  "set plane coupling",      OFFSET(coupling),     AV_OPT_TYPE_BOOL,  {.i64=0},           0,       1, FLAGS },
      66             :     { "c",         "set plane coupling",      OFFSET(coupling),     AV_OPT_TYPE_BOOL,  {.i64=0},           0,       1, FLAGS },
      67             :     { NULL }
      68             : };
      69             : 
      70             : AVFILTER_DEFINE_CLASS(deband);
      71             : 
      72           0 : static int query_formats(AVFilterContext *ctx)
      73             : {
      74           0 :     DebandContext *s = ctx->priv;
      75             : 
      76             :     static const enum AVPixelFormat pix_fmts[] = {
      77             :         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
      78             :         AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV420P,
      79             :         AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P,  AV_PIX_FMT_YUV440P,
      80             :         AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
      81             :         AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ440P,
      82             :         AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
      83             :         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
      84             :         AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
      85             :         AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
      86             :         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
      87             :         AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
      88             :         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
      89             :         AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
      90             :         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
      91             :         AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
      92             :         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
      93             :         AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
      94             :         AV_PIX_FMT_NONE
      95             :     };
      96             : 
      97             :     static const enum AVPixelFormat cpix_fmts[] = {
      98             :         AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
      99             :         AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P9,
     100             :         AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10,
     101             :         AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14,
     102             :         AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16,
     103             :         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
     104             :         AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
     105             :         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
     106             :         AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
     107             :         AV_PIX_FMT_NONE
     108             :     };
     109             : 
     110           0 :     AVFilterFormats *fmts_list = ff_make_format_list(s->coupling ? cpix_fmts : pix_fmts);
     111           0 :     if (!fmts_list)
     112           0 :         return AVERROR(ENOMEM);
     113             : 
     114           0 :     return ff_set_common_formats(ctx, fmts_list);
     115             : }
     116             : 
     117           0 : static float frand(int x, int y)
     118             : {
     119           0 :     const float r = sinf(x * 12.9898 + y * 78.233) * 43758.545;
     120             : 
     121           0 :     return r - floorf(r);
     122             : }
     123             : 
     124           0 : static int inline get_avg(int ref0, int ref1, int ref2, int ref3)
     125             : {
     126           0 :     return (ref0 + ref1 + ref2 + ref3) / 4;
     127             : }
     128             : 
     129             : typedef struct ThreadData {
     130             :     AVFrame *in, *out;
     131             : } ThreadData;
     132             : 
     133           0 : static int deband_8_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
     134             : {
     135           0 :     DebandContext *s = ctx->priv;
     136           0 :     ThreadData *td = arg;
     137           0 :     AVFrame *in = td->in;
     138           0 :     AVFrame *out = td->out;
     139             :     int x, y, p;
     140             : 
     141           0 :     for (p = 0; p < s->nb_components; p++) {
     142           0 :         const uint8_t *src_ptr = (const uint8_t *)in->data[p];
     143           0 :         uint8_t *dst_ptr = (uint8_t *)out->data[p];
     144           0 :         const int dst_linesize = out->linesize[p];
     145           0 :         const int src_linesize = in->linesize[p];
     146           0 :         const int thr = s->thr[p];
     147           0 :         const int start = (s->planeheight[p] *  jobnr   ) / nb_jobs;
     148           0 :         const int end   = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
     149           0 :         const int w = s->planewidth[p] - 1;
     150           0 :         const int h = s->planeheight[p] - 1;
     151             : 
     152           0 :         for (y = start; y < end; y++) {
     153           0 :             const int pos = y * s->planewidth[0];
     154             : 
     155           0 :             for (x = 0; x < s->planewidth[p]; x++) {
     156           0 :                 const int x_pos = s->x_pos[pos + x];
     157           0 :                 const int y_pos = s->y_pos[pos + x];
     158           0 :                 const int ref0 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     159           0 :                 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     160           0 :                 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     161           0 :                 const int ref3 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     162           0 :                 const int src0 = src_ptr[y * src_linesize + x];
     163             : 
     164           0 :                 if (s->blur) {
     165           0 :                     const int avg = get_avg(ref0, ref1, ref2, ref3);
     166           0 :                     const int diff = FFABS(src0 - avg);
     167             : 
     168           0 :                     dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0;
     169             :                 } else {
     170           0 :                     dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) &&
     171           0 :                                                     (FFABS(src0 - ref1) < thr) &&
     172           0 :                                                     (FFABS(src0 - ref2) < thr) &&
     173           0 :                                                     (FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0;
     174             :                 }
     175             :             }
     176             :         }
     177             :     }
     178             : 
     179           0 :     return 0;
     180             : }
     181             : 
     182           0 : static int deband_8_coupling_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
     183             : {
     184           0 :     DebandContext *s = ctx->priv;
     185           0 :     ThreadData *td = arg;
     186           0 :     AVFrame *in = td->in;
     187           0 :     AVFrame *out = td->out;
     188           0 :     const int start = (s->planeheight[0] *  jobnr   ) / nb_jobs;
     189           0 :     const int end   = (s->planeheight[0] * (jobnr+1)) / nb_jobs;
     190             :     int x, y, p;
     191             : 
     192           0 :     for (y = start; y < end; y++) {
     193           0 :         const int pos = y * s->planewidth[0];
     194             : 
     195           0 :         for (x = 0; x < s->planewidth[0]; x++) {
     196           0 :             const int x_pos = s->x_pos[pos + x];
     197           0 :             const int y_pos = s->y_pos[pos + x];
     198           0 :             int avg[4], cmp[4] = { 0 }, src[4];
     199             : 
     200           0 :             for (p = 0; p < s->nb_components; p++) {
     201           0 :                 const uint8_t *src_ptr = (const uint8_t *)in->data[p];
     202           0 :                 const int src_linesize = in->linesize[p];
     203           0 :                 const int thr = s->thr[p];
     204           0 :                 const int w = s->planewidth[p] - 1;
     205           0 :                 const int h = s->planeheight[p] - 1;
     206           0 :                 const int ref0 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     207           0 :                 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     208           0 :                 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     209           0 :                 const int ref3 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     210           0 :                 const int src0 = src_ptr[y * src_linesize + x];
     211             : 
     212           0 :                 src[p] = src0;
     213           0 :                 avg[p] = get_avg(ref0, ref1, ref2, ref3);
     214             : 
     215           0 :                 if (s->blur) {
     216           0 :                     cmp[p] = FFABS(src0 - avg[p]) < thr;
     217             :                 } else {
     218           0 :                     cmp[p] = (FFABS(src0 - ref0) < thr) &&
     219           0 :                              (FFABS(src0 - ref1) < thr) &&
     220           0 :                              (FFABS(src0 - ref2) < thr) &&
     221           0 :                              (FFABS(src0 - ref3) < thr);
     222             :                 }
     223             :             }
     224             : 
     225           0 :             for (p = 0; p < s->nb_components; p++)
     226           0 :                 if (!cmp[p])
     227           0 :                     break;
     228           0 :             if (p == s->nb_components) {
     229           0 :                 for (p = 0; p < s->nb_components; p++) {
     230           0 :                     const int dst_linesize = out->linesize[p];
     231             : 
     232           0 :                     out->data[p][y * dst_linesize + x] = avg[p];
     233             :                 }
     234             :             } else {
     235           0 :                 for (p = 0; p < s->nb_components; p++) {
     236           0 :                     const int dst_linesize = out->linesize[p];
     237             : 
     238           0 :                     out->data[p][y * dst_linesize + x] = src[p];
     239             :                 }
     240             :             }
     241             :         }
     242             :     }
     243             : 
     244           0 :     return 0;
     245             : }
     246             : 
     247           0 : static int deband_16_coupling_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
     248             : {
     249           0 :     DebandContext *s = ctx->priv;
     250           0 :     ThreadData *td = arg;
     251           0 :     AVFrame *in = td->in;
     252           0 :     AVFrame *out = td->out;
     253           0 :     const int start = (s->planeheight[0] *  jobnr   ) / nb_jobs;
     254           0 :     const int end   = (s->planeheight[0] * (jobnr+1)) / nb_jobs;
     255             :     int x, y, p, z;
     256             : 
     257           0 :     for (y = start; y < end; y++) {
     258           0 :         const int pos = y * s->planewidth[0];
     259             : 
     260           0 :         for (x = 0; x < s->planewidth[0]; x++) {
     261           0 :             const int x_pos = s->x_pos[pos + x];
     262           0 :             const int y_pos = s->y_pos[pos + x];
     263           0 :             int avg[4], cmp[4] = { 0 }, src[4];
     264             : 
     265           0 :             for (p = 0; p < s->nb_components; p++) {
     266           0 :                 const uint16_t *src_ptr = (const uint16_t *)in->data[p];
     267           0 :                 const int src_linesize = in->linesize[p] / 2;
     268           0 :                 const int thr = s->thr[p];
     269           0 :                 const int w = s->planewidth[p] - 1;
     270           0 :                 const int h = s->planeheight[p] - 1;
     271           0 :                 const int ref0 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     272           0 :                 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     273           0 :                 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     274           0 :                 const int ref3 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     275           0 :                 const int src0 = src_ptr[y * src_linesize + x];
     276             : 
     277           0 :                 src[p] = src0;
     278           0 :                 avg[p] = get_avg(ref0, ref1, ref2, ref3);
     279             : 
     280           0 :                 if (s->blur) {
     281           0 :                     cmp[p] = FFABS(src0 - avg[p]) < thr;
     282             :                 } else {
     283           0 :                     cmp[p] = (FFABS(src0 - ref0) < thr) &&
     284           0 :                              (FFABS(src0 - ref1) < thr) &&
     285           0 :                              (FFABS(src0 - ref2) < thr) &&
     286           0 :                              (FFABS(src0 - ref3) < thr);
     287             :                 }
     288             :             }
     289             : 
     290           0 :             for (z = 0; z < s->nb_components; z++)
     291           0 :                 if (!cmp[z])
     292           0 :                     break;
     293           0 :             if (z == s->nb_components) {
     294           0 :                 for (p = 0; p < s->nb_components; p++) {
     295           0 :                     const int dst_linesize = out->linesize[p] / 2;
     296           0 :                     uint16_t *dst = (uint16_t *)out->data[p] + y * dst_linesize + x;
     297             : 
     298           0 :                     dst[0] = avg[p];
     299             :                 }
     300             :             } else {
     301           0 :                 for (p = 0; p < s->nb_components; p++) {
     302           0 :                     const int dst_linesize = out->linesize[p] / 2;
     303           0 :                     uint16_t *dst = (uint16_t *)out->data[p] + y * dst_linesize + x;
     304             : 
     305           0 :                     dst[0] = src[p];
     306             :                 }
     307             :             }
     308             :         }
     309             :     }
     310             : 
     311           0 :     return 0;
     312             : }
     313             : 
     314           0 : static int deband_16_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
     315             : {
     316           0 :     DebandContext *s = ctx->priv;
     317           0 :     ThreadData *td = arg;
     318           0 :     AVFrame *in = td->in;
     319           0 :     AVFrame *out = td->out;
     320             :     int x, y, p;
     321             : 
     322           0 :     for (p = 0; p < s->nb_components; p++) {
     323           0 :         const uint16_t *src_ptr = (const uint16_t *)in->data[p];
     324           0 :         uint16_t *dst_ptr = (uint16_t *)out->data[p];
     325           0 :         const int dst_linesize = out->linesize[p] / 2;
     326           0 :         const int src_linesize = in->linesize[p] / 2;
     327           0 :         const int thr = s->thr[p];
     328           0 :         const int start = (s->planeheight[p] *  jobnr   ) / nb_jobs;
     329           0 :         const int end   = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
     330           0 :         const int w = s->planewidth[p] - 1;
     331           0 :         const int h = s->planeheight[p] - 1;
     332             : 
     333           0 :         for (y = start; y < end; y++) {
     334           0 :             const int pos = y * s->planewidth[0];
     335             : 
     336           0 :             for (x = 0; x < s->planewidth[p]; x++) {
     337           0 :                 const int x_pos = s->x_pos[pos + x];
     338           0 :                 const int y_pos = s->y_pos[pos + x];
     339           0 :                 const int ref0 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     340           0 :                 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x +  x_pos, 0, w)];
     341           0 :                 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     342           0 :                 const int ref3 = src_ptr[av_clip(y +  y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
     343           0 :                 const int src0 = src_ptr[y * src_linesize + x];
     344             : 
     345           0 :                 if (s->blur) {
     346           0 :                     const int avg = get_avg(ref0, ref1, ref2, ref3);
     347           0 :                     const int diff = FFABS(src0 - avg);
     348             : 
     349           0 :                     dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0;
     350             :                 } else {
     351           0 :                     dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) &&
     352           0 :                                                     (FFABS(src0 - ref1) < thr) &&
     353           0 :                                                     (FFABS(src0 - ref2) < thr) &&
     354           0 :                                                     (FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0;
     355             :                 }
     356             :             }
     357             :         }
     358             :     }
     359             : 
     360           0 :     return 0;
     361             : }
     362             : 
     363           0 : static int config_input(AVFilterLink *inlink)
     364             : {
     365           0 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     366           0 :     AVFilterContext *ctx = inlink->dst;
     367           0 :     DebandContext *s = ctx->priv;
     368           0 :     const float direction = s->direction;
     369           0 :     const int range = s->range;
     370             :     int x, y;
     371             : 
     372           0 :     s->nb_components = desc->nb_components;
     373             : 
     374           0 :     s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
     375           0 :     s->planeheight[0] = s->planeheight[3] = inlink->h;
     376           0 :     s->planewidth[1]  = s->planewidth[2]  = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
     377           0 :     s->planewidth[0]  = s->planewidth[3]  = inlink->w;
     378           0 :     s->shift[0] = desc->log2_chroma_w;
     379           0 :     s->shift[1] = desc->log2_chroma_h;
     380             : 
     381           0 :     if (s->coupling)
     382           0 :         s->deband = desc->comp[0].depth > 8 ? deband_16_coupling_c : deband_8_coupling_c;
     383             :     else
     384           0 :         s->deband = desc->comp[0].depth > 8 ? deband_16_c : deband_8_c;
     385             : 
     386           0 :     s->thr[0] = ((1 << desc->comp[0].depth) - 1) * s->threshold[0];
     387           0 :     s->thr[1] = ((1 << desc->comp[1].depth) - 1) * s->threshold[1];
     388           0 :     s->thr[2] = ((1 << desc->comp[2].depth) - 1) * s->threshold[2];
     389           0 :     s->thr[3] = ((1 << desc->comp[3].depth) - 1) * s->threshold[3];
     390             : 
     391           0 :     s->x_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->x_pos));
     392           0 :     s->y_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->y_pos));
     393           0 :     if (!s->x_pos || !s->y_pos)
     394           0 :         return AVERROR(ENOMEM);
     395             : 
     396           0 :     for (y = 0; y < s->planeheight[0]; y++) {
     397           0 :         for (x = 0; x < s->planewidth[0]; x++) {
     398           0 :             const float r = frand(x, y);
     399           0 :             const float dir = direction < 0 ? -direction : r * direction;
     400           0 :             const int dist = range < 0 ? -range : r * range;
     401             : 
     402           0 :             s->x_pos[y * s->planewidth[0] + x] = cosf(dir) * dist;
     403           0 :             s->y_pos[y * s->planewidth[0] + x] = sinf(dir) * dist;
     404             :         }
     405             :     }
     406             : 
     407           0 :     return 0;
     408             : }
     409             : 
     410           0 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     411             : {
     412           0 :     AVFilterContext *ctx = inlink->dst;
     413           0 :     AVFilterLink *outlink = ctx->outputs[0];
     414           0 :     DebandContext *s = ctx->priv;
     415             :     AVFrame *out;
     416             :     ThreadData td;
     417             : 
     418           0 :     out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     419           0 :     if (!out) {
     420           0 :         av_frame_free(&in);
     421           0 :         return AVERROR(ENOMEM);
     422             :     }
     423           0 :     av_frame_copy_props(out, in);
     424             : 
     425           0 :     td.in = in; td.out = out;
     426           0 :     ctx->internal->execute(ctx, s->deband, &td, NULL, FFMIN3(s->planeheight[1],
     427             :                                                              s->planeheight[2],
     428             :                                                              ff_filter_get_nb_threads(ctx)));
     429             : 
     430           0 :     av_frame_free(&in);
     431           0 :     return ff_filter_frame(outlink, out);
     432             : }
     433             : 
     434           0 : static av_cold void uninit(AVFilterContext *ctx)
     435             : {
     436           0 :     DebandContext *s = ctx->priv;
     437             : 
     438           0 :     av_freep(&s->x_pos);
     439           0 :     av_freep(&s->y_pos);
     440           0 : }
     441             : 
     442             : static const AVFilterPad avfilter_vf_deband_inputs[] = {
     443             :     {
     444             :         .name         = "default",
     445             :         .type         = AVMEDIA_TYPE_VIDEO,
     446             :         .config_props = config_input,
     447             :         .filter_frame = filter_frame,
     448             :     },
     449             :     { NULL }
     450             : };
     451             : 
     452             : static const AVFilterPad avfilter_vf_deband_outputs[] = {
     453             :     {
     454             :         .name = "default",
     455             :         .type = AVMEDIA_TYPE_VIDEO,
     456             :     },
     457             :     { NULL }
     458             : };
     459             : 
     460             : AVFilter ff_vf_deband = {
     461             :     .name          = "deband",
     462             :     .description   = NULL_IF_CONFIG_SMALL("Debands video."),
     463             :     .priv_size     = sizeof(DebandContext),
     464             :     .priv_class    = &deband_class,
     465             :     .uninit        = uninit,
     466             :     .query_formats = query_formats,
     467             :     .inputs        = avfilter_vf_deband_inputs,
     468             :     .outputs       = avfilter_vf_deband_outputs,
     469             :     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
     470             : };

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