LCOV - code coverage report
Current view: top level - libavfilter - vf_lut.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 162 203 79.8 %
Date: 2018-05-20 11:54:08 Functions: 6 11 54.5 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2011 Stefano Sabatini
       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             :  * Compute a look-up table for binding the input value to the output
      24             :  * value, and apply it to input video.
      25             :  */
      26             : 
      27             : #include "libavutil/attributes.h"
      28             : #include "libavutil/bswap.h"
      29             : #include "libavutil/common.h"
      30             : #include "libavutil/eval.h"
      31             : #include "libavutil/opt.h"
      32             : #include "libavutil/pixdesc.h"
      33             : #include "avfilter.h"
      34             : #include "drawutils.h"
      35             : #include "formats.h"
      36             : #include "internal.h"
      37             : #include "video.h"
      38             : 
      39             : static const char *const var_names[] = {
      40             :     "w",        ///< width of the input video
      41             :     "h",        ///< height of the input video
      42             :     "val",      ///< input value for the pixel
      43             :     "maxval",   ///< max value for the pixel
      44             :     "minval",   ///< min value for the pixel
      45             :     "negval",   ///< negated value
      46             :     "clipval",
      47             :     NULL
      48             : };
      49             : 
      50             : enum var_name {
      51             :     VAR_W,
      52             :     VAR_H,
      53             :     VAR_VAL,
      54             :     VAR_MAXVAL,
      55             :     VAR_MINVAL,
      56             :     VAR_NEGVAL,
      57             :     VAR_CLIPVAL,
      58             :     VAR_VARS_NB
      59             : };
      60             : 
      61             : typedef struct LutContext {
      62             :     const AVClass *class;
      63             :     uint16_t lut[4][256 * 256];  ///< lookup table for each component
      64             :     char   *comp_expr_str[4];
      65             :     AVExpr *comp_expr[4];
      66             :     int hsub, vsub;
      67             :     double var_values[VAR_VARS_NB];
      68             :     int is_rgb, is_yuv;
      69             :     int is_planar;
      70             :     int is_16bit;
      71             :     int step;
      72             :     int negate_alpha; /* only used by negate */
      73             : } LutContext;
      74             : 
      75             : #define Y 0
      76             : #define U 1
      77             : #define V 2
      78             : #define R 0
      79             : #define G 1
      80             : #define B 2
      81             : #define A 3
      82             : 
      83             : #define OFFSET(x) offsetof(LutContext, x)
      84             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      85             : 
      86             : static const AVOption options[] = {
      87             :     { "c0", "set component #0 expression", OFFSET(comp_expr_str[0]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      88             :     { "c1", "set component #1 expression", OFFSET(comp_expr_str[1]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      89             :     { "c2", "set component #2 expression", OFFSET(comp_expr_str[2]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      90             :     { "c3", "set component #3 expression", OFFSET(comp_expr_str[3]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      91             :     { "y",  "set Y expression",            OFFSET(comp_expr_str[Y]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      92             :     { "u",  "set U expression",            OFFSET(comp_expr_str[U]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      93             :     { "v",  "set V expression",            OFFSET(comp_expr_str[V]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      94             :     { "r",  "set R expression",            OFFSET(comp_expr_str[R]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      95             :     { "g",  "set G expression",            OFFSET(comp_expr_str[G]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      96             :     { "b",  "set B expression",            OFFSET(comp_expr_str[B]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      97             :     { "a",  "set A expression",            OFFSET(comp_expr_str[A]),  AV_OPT_TYPE_STRING, { .str = "clipval" }, .flags = FLAGS },
      98             :     { NULL }
      99             : };
     100             : 
     101          58 : static av_cold void uninit(AVFilterContext *ctx)
     102             : {
     103          58 :     LutContext *s = ctx->priv;
     104             :     int i;
     105             : 
     106         290 :     for (i = 0; i < 4; i++) {
     107         232 :         av_expr_free(s->comp_expr[i]);
     108         232 :         s->comp_expr[i] = NULL;
     109         232 :         av_freep(&s->comp_expr_str[i]);
     110             :     }
     111          58 : }
     112             : 
     113             : #define YUV_FORMATS                                         \
     114             :     AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV420P,    \
     115             :     AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P,  AV_PIX_FMT_YUV440P,    \
     116             :     AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,   \
     117             :     AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,   \
     118             :     AV_PIX_FMT_YUVJ440P,                                             \
     119             :     AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUV422P9LE, AV_PIX_FMT_YUV420P9LE, \
     120             :     AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUV440P10LE, \
     121             :     AV_PIX_FMT_YUV444P12LE, AV_PIX_FMT_YUV422P12LE, AV_PIX_FMT_YUV420P12LE, AV_PIX_FMT_YUV440P12LE, \
     122             :     AV_PIX_FMT_YUV444P14LE, AV_PIX_FMT_YUV422P14LE, AV_PIX_FMT_YUV420P14LE, \
     123             :     AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUV420P16LE, \
     124             :     AV_PIX_FMT_YUVA444P16LE, AV_PIX_FMT_YUVA422P16LE, AV_PIX_FMT_YUVA420P16LE
     125             : 
     126             : #define RGB_FORMATS                             \
     127             :     AV_PIX_FMT_ARGB,         AV_PIX_FMT_RGBA,         \
     128             :     AV_PIX_FMT_ABGR,         AV_PIX_FMT_BGRA,         \
     129             :     AV_PIX_FMT_RGB24,        AV_PIX_FMT_BGR24,        \
     130             :     AV_PIX_FMT_RGB48LE,      AV_PIX_FMT_RGBA64LE,     \
     131             :     AV_PIX_FMT_GBRP,         AV_PIX_FMT_GBRAP,        \
     132             :     AV_PIX_FMT_GBRP9LE,      AV_PIX_FMT_GBRP10LE,     \
     133             :     AV_PIX_FMT_GBRAP10LE,                             \
     134             :     AV_PIX_FMT_GBRP12LE,     AV_PIX_FMT_GBRP14LE,     \
     135             :     AV_PIX_FMT_GBRP16LE,     AV_PIX_FMT_GBRAP12LE,    \
     136             :     AV_PIX_FMT_GBRAP16LE
     137             : 
     138             : #define GRAY_FORMATS                            \
     139             :     AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9LE, AV_PIX_FMT_GRAY10LE, \
     140             :     AV_PIX_FMT_GRAY12LE, AV_PIX_FMT_GRAY16LE
     141             : 
     142             : static const enum AVPixelFormat yuv_pix_fmts[] = { YUV_FORMATS, AV_PIX_FMT_NONE };
     143             : static const enum AVPixelFormat rgb_pix_fmts[] = { RGB_FORMATS, AV_PIX_FMT_NONE };
     144             : static const enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, GRAY_FORMATS, AV_PIX_FMT_NONE };
     145             : 
     146          58 : static int query_formats(AVFilterContext *ctx)
     147             : {
     148          58 :     LutContext *s = ctx->priv;
     149             : 
     150         116 :     const enum AVPixelFormat *pix_fmts = s->is_rgb ? rgb_pix_fmts :
     151          58 :                                                      s->is_yuv ? yuv_pix_fmts :
     152             :                                                                  all_pix_fmts;
     153          58 :     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
     154          58 :     if (!fmts_list)
     155           0 :         return AVERROR(ENOMEM);
     156          58 :     return ff_set_common_formats(ctx, fmts_list);
     157             : }
     158             : 
     159             : /**
     160             :  * Clip value val in the minval - maxval range.
     161             :  */
     162           0 : static double clip(void *opaque, double val)
     163             : {
     164           0 :     LutContext *s = opaque;
     165           0 :     double minval = s->var_values[VAR_MINVAL];
     166           0 :     double maxval = s->var_values[VAR_MAXVAL];
     167             : 
     168           0 :     return av_clip(val, minval, maxval);
     169             : }
     170             : 
     171             : /**
     172             :  * Compute gamma correction for value val, assuming the minval-maxval
     173             :  * range, val is clipped to a value contained in the same interval.
     174             :  */
     175           0 : static double compute_gammaval(void *opaque, double gamma)
     176             : {
     177           0 :     LutContext *s = opaque;
     178           0 :     double val    = s->var_values[VAR_CLIPVAL];
     179           0 :     double minval = s->var_values[VAR_MINVAL];
     180           0 :     double maxval = s->var_values[VAR_MAXVAL];
     181             : 
     182           0 :     return pow((val-minval)/(maxval-minval), gamma) * (maxval-minval)+minval;
     183             : }
     184             : 
     185             : /**
     186             :  * Compute ITU Rec.709 gamma correction of value val.
     187             :  */
     188           0 : static double compute_gammaval709(void *opaque, double gamma)
     189             : {
     190           0 :     LutContext *s = opaque;
     191           0 :     double val    = s->var_values[VAR_CLIPVAL];
     192           0 :     double minval = s->var_values[VAR_MINVAL];
     193           0 :     double maxval = s->var_values[VAR_MAXVAL];
     194           0 :     double level = (val - minval) / (maxval - minval);
     195           0 :     level = level < 0.018 ? 4.5 * level
     196           0 :                           : 1.099 * pow(level, 1.0 / gamma) - 0.099;
     197           0 :     return level * (maxval - minval) + minval;
     198             : }
     199             : 
     200             : static double (* const funcs1[])(void *, double) = {
     201             :     clip,
     202             :     compute_gammaval,
     203             :     compute_gammaval709,
     204             :     NULL
     205             : };
     206             : 
     207             : static const char * const funcs1_names[] = {
     208             :     "clip",
     209             :     "gammaval",
     210             :     "gammaval709",
     211             :     NULL
     212             : };
     213             : 
     214          57 : static int config_props(AVFilterLink *inlink)
     215             : {
     216          57 :     AVFilterContext *ctx = inlink->dst;
     217          57 :     LutContext *s = ctx->priv;
     218          57 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     219             :     uint8_t rgba_map[4]; /* component index -> RGBA color index map */
     220             :     int min[4], max[4];
     221             :     int val, color, ret;
     222             : 
     223          57 :     s->hsub = desc->log2_chroma_w;
     224          57 :     s->vsub = desc->log2_chroma_h;
     225             : 
     226          57 :     s->var_values[VAR_W] = inlink->w;
     227          57 :     s->var_values[VAR_H] = inlink->h;
     228          57 :     s->is_16bit = desc->comp[0].depth > 8;
     229             : 
     230          57 :     switch (inlink->format) {
     231          30 :     case AV_PIX_FMT_YUV410P:
     232             :     case AV_PIX_FMT_YUV411P:
     233             :     case AV_PIX_FMT_YUV420P:
     234             :     case AV_PIX_FMT_YUV422P:
     235             :     case AV_PIX_FMT_YUV440P:
     236             :     case AV_PIX_FMT_YUV444P:
     237             :     case AV_PIX_FMT_YUVA420P:
     238             :     case AV_PIX_FMT_YUVA422P:
     239             :     case AV_PIX_FMT_YUVA444P:
     240             :     case AV_PIX_FMT_YUV420P9LE:
     241             :     case AV_PIX_FMT_YUV422P9LE:
     242             :     case AV_PIX_FMT_YUV444P9LE:
     243             :     case AV_PIX_FMT_YUVA420P9LE:
     244             :     case AV_PIX_FMT_YUVA422P9LE:
     245             :     case AV_PIX_FMT_YUVA444P9LE:
     246             :     case AV_PIX_FMT_YUV420P10LE:
     247             :     case AV_PIX_FMT_YUV422P10LE:
     248             :     case AV_PIX_FMT_YUV440P10LE:
     249             :     case AV_PIX_FMT_YUV444P10LE:
     250             :     case AV_PIX_FMT_YUVA420P10LE:
     251             :     case AV_PIX_FMT_YUVA422P10LE:
     252             :     case AV_PIX_FMT_YUVA444P10LE:
     253             :     case AV_PIX_FMT_YUV420P12LE:
     254             :     case AV_PIX_FMT_YUV422P12LE:
     255             :     case AV_PIX_FMT_YUV440P12LE:
     256             :     case AV_PIX_FMT_YUV444P12LE:
     257             :     case AV_PIX_FMT_YUV420P14LE:
     258             :     case AV_PIX_FMT_YUV422P14LE:
     259             :     case AV_PIX_FMT_YUV444P14LE:
     260             :     case AV_PIX_FMT_YUV420P16LE:
     261             :     case AV_PIX_FMT_YUV422P16LE:
     262             :     case AV_PIX_FMT_YUV444P16LE:
     263             :     case AV_PIX_FMT_YUVA420P16LE:
     264             :     case AV_PIX_FMT_YUVA422P16LE:
     265             :     case AV_PIX_FMT_YUVA444P16LE:
     266          30 :         min[Y] = 16 * (1 << (desc->comp[0].depth - 8));
     267          30 :         min[U] = 16 * (1 << (desc->comp[1].depth - 8));
     268          30 :         min[V] = 16 * (1 << (desc->comp[2].depth - 8));
     269          30 :         min[A] = 0;
     270          30 :         max[Y] = 235 * (1 << (desc->comp[0].depth - 8));
     271          30 :         max[U] = 240 * (1 << (desc->comp[1].depth - 8));
     272          30 :         max[V] = 240 * (1 << (desc->comp[2].depth - 8));
     273          30 :         max[A] = (1 << desc->comp[0].depth) - 1;
     274          30 :         break;
     275           2 :     case AV_PIX_FMT_RGB48LE:
     276             :     case AV_PIX_FMT_RGBA64LE:
     277           2 :         min[0] = min[1] = min[2] = min[3] = 0;
     278           2 :         max[0] = max[1] = max[2] = max[3] = 65535;
     279           2 :         break;
     280          25 :     default:
     281          25 :         min[0] = min[1] = min[2] = min[3] = 0;
     282          25 :         max[0] = max[1] = max[2] = max[3] = 255 * (1 << (desc->comp[0].depth - 8));
     283             :     }
     284             : 
     285          57 :     s->is_yuv = s->is_rgb = 0;
     286          57 :     s->is_planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
     287          57 :     if      (ff_fmt_is_in(inlink->format, yuv_pix_fmts)) s->is_yuv = 1;
     288          23 :     else if (ff_fmt_is_in(inlink->format, rgb_pix_fmts)) s->is_rgb = 1;
     289             : 
     290          57 :     if (s->is_rgb) {
     291          18 :         ff_fill_rgba_map(rgba_map, inlink->format);
     292          18 :         s->step = av_get_bits_per_pixel(desc) >> 3;
     293          18 :         if (s->is_16bit) {
     294          10 :             s->step = s->step >> 1;
     295             :         }
     296             :     }
     297             : 
     298         233 :     for (color = 0; color < desc->nb_components; color++) {
     299             :         double res;
     300         176 :         int comp = s->is_rgb ? rgba_map[color] : color;
     301             : 
     302             :         /* create the parsed expression */
     303         176 :         av_expr_free(s->comp_expr[color]);
     304         176 :         s->comp_expr[color] = NULL;
     305         176 :         ret = av_expr_parse(&s->comp_expr[color], s->comp_expr_str[color],
     306             :                             var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
     307         176 :         if (ret < 0) {
     308           0 :             av_log(ctx, AV_LOG_ERROR,
     309             :                    "Error when parsing the expression '%s' for the component %d and color %d.\n",
     310             :                    s->comp_expr_str[comp], comp, color);
     311           0 :             return AVERROR(EINVAL);
     312             :         }
     313             : 
     314             :         /* compute the lut */
     315         176 :         s->var_values[VAR_MAXVAL] = max[color];
     316         176 :         s->var_values[VAR_MINVAL] = min[color];
     317             : 
     318    11534512 :         for (val = 0; val < FF_ARRAY_ELEMS(s->lut[comp]); val++) {
     319    11534336 :             s->var_values[VAR_VAL] = val;
     320    11534336 :             s->var_values[VAR_CLIPVAL] = av_clip(val, min[color], max[color]);
     321    11534336 :             s->var_values[VAR_NEGVAL] =
     322    11534336 :                 av_clip(min[color] + max[color] - s->var_values[VAR_VAL],
     323             :                         min[color], max[color]);
     324             : 
     325    11534336 :             res = av_expr_eval(s->comp_expr[color], s->var_values, s);
     326    11534336 :             if (isnan(res)) {
     327           0 :                 av_log(ctx, AV_LOG_ERROR,
     328             :                        "Error when evaluating the expression '%s' for the value %d for the component %d.\n",
     329             :                        s->comp_expr_str[color], val, comp);
     330           0 :                 return AVERROR(EINVAL);
     331             :             }
     332    11534336 :             s->lut[comp][val] = av_clip((int)res, 0, max[A]);
     333    11534336 :             av_log(ctx, AV_LOG_DEBUG, "val[%d][%d] = %d\n", comp, val, s->lut[comp][val]);
     334             :         }
     335             :     }
     336             : 
     337          57 :     return 0;
     338             : }
     339             : 
     340         106 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     341             : {
     342         106 :     AVFilterContext *ctx = inlink->dst;
     343         106 :     LutContext *s = ctx->priv;
     344         106 :     AVFilterLink *outlink = ctx->outputs[0];
     345             :     AVFrame *out;
     346         106 :     int i, j, plane, direct = 0;
     347             : 
     348         106 :     if (av_frame_is_writable(in)) {
     349         106 :         direct = 1;
     350         106 :         out = in;
     351             :     } else {
     352           0 :         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     353           0 :         if (!out) {
     354           0 :             av_frame_free(&in);
     355           0 :             return AVERROR(ENOMEM);
     356             :         }
     357           0 :         av_frame_copy_props(out, in);
     358             :     }
     359             : 
     360         108 :     if (s->is_rgb && s->is_16bit && !s->is_planar) {
     361             :         /* packed, 16-bit */
     362             :         uint16_t *inrow, *outrow, *inrow0, *outrow0;
     363           2 :         const int w = inlink->w;
     364           2 :         const int h = in->height;
     365           2 :         const uint16_t (*tab)[256*256] = (const uint16_t (*)[256*256])s->lut;
     366           2 :         const int in_linesize  =  in->linesize[0] / 2;
     367           2 :         const int out_linesize = out->linesize[0] / 2;
     368           2 :         const int step = s->step;
     369             : 
     370           2 :         inrow0  = (uint16_t*) in ->data[0];
     371           2 :         outrow0 = (uint16_t*) out->data[0];
     372             : 
     373         578 :         for (i = 0; i < h; i ++) {
     374         576 :             inrow  = inrow0;
     375         576 :             outrow = outrow0;
     376      203328 :             for (j = 0; j < w; j++) {
     377             : 
     378      202752 :                 switch (step) {
     379             : #if HAVE_BIGENDIAN
     380             :                 case 4:  outrow[3] = av_bswap16(tab[3][av_bswap16(inrow[3])]); // Fall-through
     381             :                 case 3:  outrow[2] = av_bswap16(tab[2][av_bswap16(inrow[2])]); // Fall-through
     382             :                 case 2:  outrow[1] = av_bswap16(tab[1][av_bswap16(inrow[1])]); // Fall-through
     383             :                 default: outrow[0] = av_bswap16(tab[0][av_bswap16(inrow[0])]);
     384             : #else
     385      101376 :                 case 4:  outrow[3] = tab[3][inrow[3]]; // Fall-through
     386      202752 :                 case 3:  outrow[2] = tab[2][inrow[2]]; // Fall-through
     387      202752 :                 case 2:  outrow[1] = tab[1][inrow[1]]; // Fall-through
     388      202752 :                 default: outrow[0] = tab[0][inrow[0]];
     389             : #endif
     390             :                 }
     391      202752 :                 outrow += step;
     392      202752 :                 inrow  += step;
     393             :             }
     394         576 :             inrow0  += in_linesize;
     395         576 :             outrow0 += out_linesize;
     396             :         }
     397         110 :     } else if (s->is_rgb && !s->is_planar) {
     398             :         /* packed */
     399             :         uint8_t *inrow, *outrow, *inrow0, *outrow0;
     400           6 :         const int w = inlink->w;
     401           6 :         const int h = in->height;
     402           6 :         const uint16_t (*tab)[256*256] = (const uint16_t (*)[256*256])s->lut;
     403           6 :         const int in_linesize  =  in->linesize[0];
     404           6 :         const int out_linesize = out->linesize[0];
     405           6 :         const int step = s->step;
     406             : 
     407           6 :         inrow0  = in ->data[0];
     408           6 :         outrow0 = out->data[0];
     409             : 
     410        1734 :         for (i = 0; i < h; i ++) {
     411        1728 :             inrow  = inrow0;
     412        1728 :             outrow = outrow0;
     413      609984 :             for (j = 0; j < w; j++) {
     414      608256 :                 switch (step) {
     415      405504 :                 case 4:  outrow[3] = tab[3][inrow[3]]; // Fall-through
     416      608256 :                 case 3:  outrow[2] = tab[2][inrow[2]]; // Fall-through
     417      608256 :                 case 2:  outrow[1] = tab[1][inrow[1]]; // Fall-through
     418      608256 :                 default: outrow[0] = tab[0][inrow[0]];
     419             :                 }
     420      608256 :                 outrow += step;
     421      608256 :                 inrow  += step;
     422             :             }
     423        1728 :             inrow0  += in_linesize;
     424        1728 :             outrow0 += out_linesize;
     425             :         }
     426          98 :     } else if (s->is_16bit) {
     427             :         // planar >8 bit depth
     428             :         uint16_t *inrow, *outrow;
     429             : 
     430         126 :         for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
     431          94 :             int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
     432          94 :             int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
     433          94 :             int h = AV_CEIL_RSHIFT(inlink->h, vsub);
     434          94 :             int w = AV_CEIL_RSHIFT(inlink->w, hsub);
     435          94 :             const uint16_t *tab = s->lut[plane];
     436          94 :             const int in_linesize  =  in->linesize[plane] / 2;
     437          94 :             const int out_linesize = out->linesize[plane] / 2;
     438             : 
     439          94 :             inrow  = (uint16_t *)in ->data[plane];
     440          94 :             outrow = (uint16_t *)out->data[plane];
     441             : 
     442       24862 :             for (i = 0; i < h; i++) {
     443     7830720 :                 for (j = 0; j < w; j++) {
     444             : #if HAVE_BIGENDIAN
     445             :                     outrow[j] = av_bswap16(tab[av_bswap16(inrow[j])]);
     446             : #else
     447     7805952 :                     outrow[j] = tab[inrow[j]];
     448             : #endif
     449             :                 }
     450       24768 :                 inrow  += in_linesize;
     451       24768 :                 outrow += out_linesize;
     452             :             }
     453             :         }
     454             :     } else {
     455             :         /* planar 8bit depth */
     456             :         uint8_t *inrow, *outrow;
     457             : 
     458         266 :         for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
     459         200 :             int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
     460         200 :             int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
     461         200 :             int h = AV_CEIL_RSHIFT(inlink->h, vsub);
     462         200 :             int w = AV_CEIL_RSHIFT(inlink->w, hsub);
     463         200 :             const uint16_t *tab = s->lut[plane];
     464         200 :             const int in_linesize  =  in->linesize[plane];
     465         200 :             const int out_linesize = out->linesize[plane];
     466             : 
     467         200 :             inrow  = in ->data[plane];
     468         200 :             outrow = out->data[plane];
     469             : 
     470       41528 :             for (i = 0; i < h; i++) {
     471    11408112 :                 for (j = 0; j < w; j++)
     472    11366784 :                     outrow[j] = tab[inrow[j]];
     473       41328 :                 inrow  += in_linesize;
     474       41328 :                 outrow += out_linesize;
     475             :             }
     476             :         }
     477             :     }
     478             : 
     479         106 :     if (!direct)
     480           0 :         av_frame_free(&in);
     481             : 
     482         106 :     return ff_filter_frame(outlink, out);
     483             : }
     484             : 
     485             : static const AVFilterPad inputs[] = {
     486             :     { .name         = "default",
     487             :       .type         = AVMEDIA_TYPE_VIDEO,
     488             :       .filter_frame = filter_frame,
     489             :       .config_props = config_props,
     490             :     },
     491             :     { NULL }
     492             : };
     493             : static const AVFilterPad outputs[] = {
     494             :     { .name = "default",
     495             :       .type = AVMEDIA_TYPE_VIDEO,
     496             :     },
     497             :     { NULL }
     498             : };
     499             : 
     500             : #define DEFINE_LUT_FILTER(name_, description_)                          \
     501             :     AVFilter ff_vf_##name_ = {                                          \
     502             :         .name          = #name_,                                        \
     503             :         .description   = NULL_IF_CONFIG_SMALL(description_),            \
     504             :         .priv_size     = sizeof(LutContext),                            \
     505             :         .priv_class    = &name_ ## _class,                              \
     506             :         .init          = name_##_init,                                  \
     507             :         .uninit        = uninit,                                        \
     508             :         .query_formats = query_formats,                                 \
     509             :         .inputs        = inputs,                                        \
     510             :         .outputs       = outputs,                                       \
     511             :         .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,        \
     512             :     }
     513             : 
     514             : #if CONFIG_LUT_FILTER
     515             : 
     516             : #define lut_options options
     517             : AVFILTER_DEFINE_CLASS(lut);
     518             : 
     519          57 : static int lut_init(AVFilterContext *ctx)
     520             : {
     521          57 :     return 0;
     522             : }
     523             : 
     524             : DEFINE_LUT_FILTER(lut, "Compute and apply a lookup table to the RGB/YUV input video.");
     525             : #endif
     526             : 
     527             : #if CONFIG_LUTYUV_FILTER
     528             : 
     529             : #define lutyuv_options options
     530             : AVFILTER_DEFINE_CLASS(lutyuv);
     531             : 
     532           0 : static av_cold int lutyuv_init(AVFilterContext *ctx)
     533             : {
     534           0 :     LutContext *s = ctx->priv;
     535             : 
     536           0 :     s->is_yuv = 1;
     537             : 
     538           0 :     return 0;
     539             : }
     540             : 
     541             : DEFINE_LUT_FILTER(lutyuv, "Compute and apply a lookup table to the YUV input video.");
     542             : #endif
     543             : 
     544             : #if CONFIG_LUTRGB_FILTER
     545             : 
     546             : #define lutrgb_options options
     547             : AVFILTER_DEFINE_CLASS(lutrgb);
     548             : 
     549           0 : static av_cold int lutrgb_init(AVFilterContext *ctx)
     550             : {
     551           0 :     LutContext *s = ctx->priv;
     552             : 
     553           0 :     s->is_rgb = 1;
     554             : 
     555           0 :     return 0;
     556             : }
     557             : 
     558             : DEFINE_LUT_FILTER(lutrgb, "Compute and apply a lookup table to the RGB input video.");
     559             : #endif
     560             : 
     561             : #if CONFIG_NEGATE_FILTER
     562             : 
     563             : static const AVOption negate_options[] = {
     564             :     { "negate_alpha", NULL, OFFSET(negate_alpha), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
     565             :     { NULL }
     566             : };
     567             : 
     568             : AVFILTER_DEFINE_CLASS(negate);
     569             : 
     570           1 : static av_cold int negate_init(AVFilterContext *ctx)
     571             : {
     572           1 :     LutContext *s = ctx->priv;
     573             :     int i;
     574             : 
     575           1 :     av_log(ctx, AV_LOG_DEBUG, "negate_alpha:%d\n", s->negate_alpha);
     576             : 
     577           5 :     for (i = 0; i < 4; i++) {
     578           4 :         s->comp_expr_str[i] = av_strdup((i == 3 && !s->negate_alpha) ?
     579             :                                           "val" : "negval");
     580           4 :         if (!s->comp_expr_str[i]) {
     581           0 :             uninit(ctx);
     582           0 :             return AVERROR(ENOMEM);
     583             :         }
     584             :     }
     585             : 
     586           1 :     return 0;
     587             : }
     588             : 
     589             : DEFINE_LUT_FILTER(negate, "Negate input video.");
     590             : 
     591             : #endif

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