LCOV - code coverage report
Current view: top level - libavfilter - vf_owdenoise.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 114 144 79.2 %
Date: 2017-12-16 13:57:32 Functions: 11 11 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
       3             :  * Copyright (c) 2013 Clément Bœsch <u pkh me>
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or modify
       8             :  * it under the terms of the GNU General Public License as published by
       9             :  * the Free Software Foundation; either version 2 of the License, or
      10             :  * (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15             :  * GNU General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU General Public License along
      18             :  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
      19             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      20             :  */
      21             : 
      22             : /**
      23             :  * @todo try to change to int
      24             :  * @todo try lifting based implementation
      25             :  * @todo optimize optimize optimize
      26             :  * @todo hard thresholding
      27             :  * @todo use QP to decide filter strength
      28             :  * @todo wavelet normalization / least squares optimal signal vs. noise thresholds
      29             :  */
      30             : 
      31             : #include "libavutil/imgutils.h"
      32             : #include "libavutil/opt.h"
      33             : #include "libavutil/pixdesc.h"
      34             : #include "avfilter.h"
      35             : #include "internal.h"
      36             : 
      37             : typedef struct OWDenoiseContext {
      38             :     const AVClass *class;
      39             :     double luma_strength;
      40             :     double chroma_strength;
      41             :     int depth;
      42             :     float *plane[16+1][4];
      43             :     int linesize;
      44             :     int hsub, vsub;
      45             :     int pixel_depth;
      46             : } OWDenoiseContext;
      47             : 
      48             : #define OFFSET(x) offsetof(OWDenoiseContext, x)
      49             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      50             : static const AVOption owdenoise_options[] = {
      51             :     { "depth",           "set depth",           OFFSET(depth),           AV_OPT_TYPE_INT,    {.i64 =   8}, 8,   16, FLAGS },
      52             :     { "luma_strength",   "set luma strength",   OFFSET(luma_strength),   AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS },
      53             :     { "ls",              "set luma strength",   OFFSET(luma_strength),   AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS },
      54             :     { "chroma_strength", "set chroma strength", OFFSET(chroma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS },
      55             :     { "cs",              "set chroma strength", OFFSET(chroma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS },
      56             :     { NULL }
      57             : };
      58             : 
      59             : AVFILTER_DEFINE_CLASS(owdenoise);
      60             : 
      61             : DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
      62             :     {  0,  48,  12,  60,   3,  51,  15,  63 },
      63             :     { 32,  16,  44,  28,  35,  19,  47,  31 },
      64             :     {  8,  56,   4,  52,  11,  59,   7,  55 },
      65             :     { 40,  24,  36,  20,  43,  27,  39,  23 },
      66             :     {  2,  50,  14,  62,   1,  49,  13,  61 },
      67             :     { 34,  18,  46,  30,  33,  17,  45,  29 },
      68             :     { 10,  58,   6,  54,   9,  57,   5,  53 },
      69             :     { 42,  26,  38,  22,  41,  25,  37,  21 },
      70             : };
      71             : 
      72             : static const double coeff[2][5] = {
      73             :     {
      74             :          0.6029490182363579  * M_SQRT2,
      75             :          0.2668641184428723  * M_SQRT2,
      76             :         -0.07822326652898785 * M_SQRT2,
      77             :         -0.01686411844287495 * M_SQRT2,
      78             :          0.02674875741080976 * M_SQRT2,
      79             :     },{
      80             :          1.115087052456994   / M_SQRT2,
      81             :         -0.5912717631142470  / M_SQRT2,
      82             :         -0.05754352622849957 / M_SQRT2,
      83             :          0.09127176311424948 / M_SQRT2,
      84             :     }
      85             : };
      86             : 
      87             : static const double icoeff[2][5] = {
      88             :     {
      89             :          1.115087052456994   / M_SQRT2,
      90             :          0.5912717631142470  / M_SQRT2,
      91             :         -0.05754352622849957 / M_SQRT2,
      92             :         -0.09127176311424948 / M_SQRT2,
      93             :     },{
      94             :          0.6029490182363579  * M_SQRT2,
      95             :         -0.2668641184428723  * M_SQRT2,
      96             :         -0.07822326652898785 * M_SQRT2,
      97             :          0.01686411844287495 * M_SQRT2,
      98             :          0.02674875741080976 * M_SQRT2,
      99             :     }
     100             : };
     101             : 
     102             : 
     103      334400 : static inline void decompose(float *dst_l, float *dst_h, const float *src,
     104             :                              int linesize, int w)
     105             : {
     106             :     int x, i;
     107     4942400 :     for (x = 0; x < w; x++) {
     108     4608000 :         double sum_l = src[x * linesize] * coeff[0][0];
     109     4608000 :         double sum_h = src[x * linesize] * coeff[1][0];
     110    23040000 :         for (i = 1; i <= 4; i++) {
     111    36864000 :             const double s = src[avpriv_mirror(x - i, w - 1) * linesize]
     112    18432000 :                            + src[avpriv_mirror(x + i, w - 1) * linesize];
     113             : 
     114    18432000 :             sum_l += coeff[0][i] * s;
     115    18432000 :             sum_h += coeff[1][i] * s;
     116             :         }
     117     4608000 :         dst_l[x * linesize] = sum_l;
     118     4608000 :         dst_h[x * linesize] = sum_h;
     119             :     }
     120      334400 : }
     121             : 
     122      334400 : static inline void compose(float *dst, const float *src_l, const float *src_h,
     123             :                            int linesize, int w)
     124             : {
     125             :     int x, i;
     126     4942400 :     for (x = 0; x < w; x++) {
     127     4608000 :         double sum_l = src_l[x * linesize] * icoeff[0][0];
     128     4608000 :         double sum_h = src_h[x * linesize] * icoeff[1][0];
     129    23040000 :         for (i = 1; i <= 4; i++) {
     130    18432000 :             const int x0 = avpriv_mirror(x - i, w - 1) * linesize;
     131    18432000 :             const int x1 = avpriv_mirror(x + i, w - 1) * linesize;
     132             : 
     133    18432000 :             sum_l += icoeff[0][i] * (src_l[x0] + src_l[x1]);
     134    18432000 :             sum_h += icoeff[1][i] * (src_h[x0] + src_h[x1]);
     135             :         }
     136     4608000 :         dst[x * linesize] = (sum_l + sum_h) * 0.5;
     137             :     }
     138      334400 : }
     139             : 
     140         114 : static inline void decompose2D(float *dst_l, float *dst_h, const float *src,
     141             :                                int xlinesize, int ylinesize,
     142             :                                int step, int w, int h)
     143             : {
     144             :     int y, x;
     145       22994 :     for (y = 0; y < h; y++)
     146      357280 :         for (x = 0; x < step; x++)
     147     1003200 :             decompose(dst_l + ylinesize*y + xlinesize*x,
     148      334400 :                       dst_h + ylinesize*y + xlinesize*x,
     149      334400 :                       src   + ylinesize*y + xlinesize*x,
     150      334400 :                       step * xlinesize, (w - x + step - 1) / step);
     151         114 : }
     152             : 
     153         114 : static inline void compose2D(float *dst, const float *src_l, const float *src_h,
     154             :                              int xlinesize, int ylinesize,
     155             :                              int step, int w, int h)
     156             : {
     157             :     int y, x;
     158       22994 :     for (y = 0; y < h; y++)
     159      357280 :         for (x = 0; x < step; x++)
     160     1003200 :             compose(dst   + ylinesize*y + xlinesize*x,
     161      334400 :                     src_l + ylinesize*y + xlinesize*x,
     162      334400 :                     src_h + ylinesize*y + xlinesize*x,
     163      334400 :                     step * xlinesize, (w - x + step - 1) / step);
     164         114 : }
     165             : 
     166          38 : static void decompose2D2(float *dst[4], float *src, float *temp[2],
     167             :                          int linesize, int step, int w, int h)
     168             : {
     169          38 :     decompose2D(temp[0], temp[1], src,     1, linesize, step, w, h);
     170          38 :     decompose2D( dst[0],  dst[1], temp[0], linesize, 1, step, h, w);
     171          38 :     decompose2D( dst[2],  dst[3], temp[1], linesize, 1, step, h, w);
     172          38 : }
     173             : 
     174          38 : static void compose2D2(float *dst, float *src[4], float *temp[2],
     175             :                        int linesize, int step, int w, int h)
     176             : {
     177          38 :     compose2D(temp[0],  src[0],  src[1], linesize, 1, step, h, w);
     178          38 :     compose2D(temp[1],  src[2],  src[3], linesize, 1, step, h, w);
     179          38 :     compose2D(dst,     temp[0], temp[1], 1, linesize, step, w, h);
     180          38 : }
     181             : 
     182           6 : static void filter(OWDenoiseContext *s,
     183             :                    uint8_t       *dst, int dst_linesize,
     184             :                    const uint8_t *src, int src_linesize,
     185             :                    int width, int height, double strength)
     186             : {
     187           6 :     int x, y, i, j, depth = s->depth;
     188             : 
     189          34 :     while (1<<depth > width || 1<<depth > height)
     190          22 :         depth--;
     191             : 
     192           6 :     if (s->pixel_depth <= 8) {
     193         966 :         for (y = 0; y < height; y++)
     194      231360 :             for(x = 0; x < width; x++)
     195      230400 :                 s->plane[0][0][y*s->linesize + x] = src[y*src_linesize + x];
     196             :     } else {
     197           0 :         const uint16_t *src16 = (const uint16_t *)src;
     198             : 
     199           0 :         src_linesize /= 2;
     200           0 :         for (y = 0; y < height; y++)
     201           0 :             for(x = 0; x < width; x++)
     202           0 :                 s->plane[0][0][y*s->linesize + x] = src16[y*src_linesize + x];
     203             :     }
     204             : 
     205          44 :     for (i = 0; i < depth; i++)
     206          38 :         decompose2D2(s->plane[i + 1], s->plane[i][0], s->plane[0] + 1, s->linesize, 1<<i, width, height);
     207             : 
     208          44 :     for (i = 0; i < depth; i++) {
     209         152 :         for (j = 1; j < 4; j++) {
     210       18834 :             for (y = 0; y < height; y++) {
     211     4626720 :                 for (x = 0; x < width; x++) {
     212     4608000 :                     double v = s->plane[i + 1][j][y*s->linesize + x];
     213     4608000 :                     if      (v >  strength) v -= strength;
     214     4608000 :                     else if (v < -strength) v += strength;
     215     4608000 :                     else                    v  = 0;
     216     4608000 :                     s->plane[i + 1][j][x + y*s->linesize] = v;
     217             :                 }
     218             :             }
     219             :         }
     220             :     }
     221          44 :     for (i = depth-1; i >= 0; i--)
     222          38 :         compose2D2(s->plane[i][0], s->plane[i + 1], s->plane[0] + 1, s->linesize, 1<<i, width, height);
     223             : 
     224           6 :     if (s->pixel_depth <= 8) {
     225         966 :         for (y = 0; y < height; y++) {
     226      231360 :             for (x = 0; x < width; x++) {
     227      230400 :                 i = s->plane[0][0][y*s->linesize + x] + dither[x&7][y&7]*(1.0/64) + 1.0/128; // yes the rounding is insane but optimal :)
     228      230400 :                 if ((unsigned)i > 255U) i = ~(i >> 31);
     229      230400 :                 dst[y*dst_linesize + x] = i;
     230             :             }
     231             :         }
     232             :     } else {
     233           0 :         uint16_t *dst16 = (uint16_t *)dst;
     234             : 
     235           0 :         dst_linesize /= 2;
     236           0 :         for (y = 0; y < height; y++) {
     237           0 :             for (x = 0; x < width; x++) {
     238           0 :                 i = s->plane[0][0][y*s->linesize + x];
     239           0 :                 dst16[y*dst_linesize + x] = i;
     240             :             }
     241             :         }
     242             :     }
     243           6 : }
     244             : 
     245           2 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     246             : {
     247           2 :     AVFilterContext *ctx = inlink->dst;
     248           2 :     OWDenoiseContext *s = ctx->priv;
     249           2 :     AVFilterLink *outlink = ctx->outputs[0];
     250             :     AVFrame *out;
     251           2 :     const int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub);
     252           2 :     const int ch = AV_CEIL_RSHIFT(inlink->h, s->vsub);
     253             : 
     254           2 :     if (av_frame_is_writable(in)) {
     255           2 :         out = in;
     256             : 
     257           2 :         if (s->luma_strength > 0)
     258           2 :             filter(s, out->data[0], out->linesize[0], in->data[0], in->linesize[0], inlink->w, inlink->h, s->luma_strength);
     259           2 :         if (s->chroma_strength > 0) {
     260           2 :             filter(s, out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw,        ch,        s->chroma_strength);
     261           2 :             filter(s, out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw,        ch,        s->chroma_strength);
     262             :         }
     263             :     } else {
     264           0 :         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     265           0 :         if (!out) {
     266           0 :             av_frame_free(&in);
     267           0 :             return AVERROR(ENOMEM);
     268             :         }
     269           0 :         av_frame_copy_props(out, in);
     270             : 
     271           0 :         if (s->luma_strength > 0) {
     272           0 :             filter(s, out->data[0], out->linesize[0], in->data[0], in->linesize[0], inlink->w, inlink->h, s->luma_strength);
     273             :         } else {
     274           0 :             av_image_copy_plane(out->data[0], out->linesize[0], in ->data[0], in ->linesize[0], inlink->w, inlink->h);
     275             :         }
     276           0 :         if (s->chroma_strength > 0) {
     277           0 :             filter(s, out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw, ch, s->chroma_strength);
     278           0 :             filter(s, out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw, ch, s->chroma_strength);
     279             :         } else {
     280           0 :             av_image_copy_plane(out->data[1], out->linesize[1], in ->data[1], in ->linesize[1], inlink->w, inlink->h);
     281           0 :             av_image_copy_plane(out->data[2], out->linesize[2], in ->data[2], in ->linesize[2], inlink->w, inlink->h);
     282             :         }
     283             : 
     284           0 :         if (in->data[3])
     285           0 :             av_image_copy_plane(out->data[3], out->linesize[3],
     286           0 :                                 in ->data[3], in ->linesize[3],
     287             :                                 inlink->w, inlink->h);
     288           0 :         av_frame_free(&in);
     289             :     }
     290             : 
     291           2 :     return ff_filter_frame(outlink, out);
     292             : }
     293             : 
     294           1 : static int query_formats(AVFilterContext *ctx)
     295             : {
     296             :     static const enum AVPixelFormat pix_fmts[] = {
     297             :         AV_PIX_FMT_YUV444P,      AV_PIX_FMT_YUV422P,
     298             :         AV_PIX_FMT_YUV420P,      AV_PIX_FMT_YUV411P,
     299             :         AV_PIX_FMT_YUV410P,      AV_PIX_FMT_YUV440P,
     300             :         AV_PIX_FMT_YUVA444P,     AV_PIX_FMT_YUVA422P,
     301             :         AV_PIX_FMT_YUVA420P,
     302             :         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
     303             :         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
     304             :         AV_PIX_FMT_YUV440P10,
     305             :         AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
     306             :         AV_PIX_FMT_YUV440P12,
     307             :         AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
     308             :         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
     309             :         AV_PIX_FMT_NONE
     310             :     };
     311           1 :     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
     312           1 :     if (!fmts_list)
     313           0 :         return AVERROR(ENOMEM);
     314           1 :     return ff_set_common_formats(ctx, fmts_list);
     315             : }
     316             : 
     317           1 : static int config_input(AVFilterLink *inlink)
     318             : {
     319             :     int i, j;
     320           1 :     OWDenoiseContext *s = inlink->dst->priv;
     321           1 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     322           1 :     const int h = FFALIGN(inlink->h, 16);
     323             : 
     324           1 :     s->hsub = desc->log2_chroma_w;
     325           1 :     s->vsub = desc->log2_chroma_h;
     326           1 :     s->pixel_depth = desc->comp[0].depth;
     327             : 
     328           1 :     s->linesize = FFALIGN(inlink->w, 16);
     329           5 :     for (j = 0; j < 4; j++) {
     330          48 :         for (i = 0; i <= s->depth; i++) {
     331          44 :             s->plane[i][j] = av_malloc_array(s->linesize, h * sizeof(s->plane[0][0][0]));
     332          44 :             if (!s->plane[i][j])
     333           0 :                 return AVERROR(ENOMEM);
     334             :         }
     335             :     }
     336           1 :     return 0;
     337             : }
     338             : 
     339           1 : static av_cold void uninit(AVFilterContext *ctx)
     340             : {
     341             :     int i, j;
     342           1 :     OWDenoiseContext *s = ctx->priv;
     343             : 
     344           5 :     for (j = 0; j < 4; j++)
     345          48 :         for (i = 0; i <= s->depth; i++)
     346          44 :             av_freep(&s->plane[i][j]);
     347           1 : }
     348             : 
     349             : static const AVFilterPad owdenoise_inputs[] = {
     350             :     {
     351             :         .name         = "default",
     352             :         .type         = AVMEDIA_TYPE_VIDEO,
     353             :         .filter_frame = filter_frame,
     354             :         .config_props = config_input,
     355             :     },
     356             :     { NULL }
     357             : };
     358             : 
     359             : static const AVFilterPad owdenoise_outputs[] = {
     360             :     {
     361             :         .name = "default",
     362             :         .type = AVMEDIA_TYPE_VIDEO,
     363             :     },
     364             :     { NULL }
     365             : };
     366             : 
     367             : AVFilter ff_vf_owdenoise = {
     368             :     .name          = "owdenoise",
     369             :     .description   = NULL_IF_CONFIG_SMALL("Denoise using wavelets."),
     370             :     .priv_size     = sizeof(OWDenoiseContext),
     371             :     .uninit        = uninit,
     372             :     .query_formats = query_formats,
     373             :     .inputs        = owdenoise_inputs,
     374             :     .outputs       = owdenoise_outputs,
     375             :     .priv_class    = &owdenoise_class,
     376             :     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
     377             : };

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