LCOV - code coverage report
Current view: top level - libavfilter - vf_colorlevels.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 100 0.0 %
Date: 2017-12-15 11:05:35 Functions: 0 3 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2013 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             : #include "libavutil/imgutils.h"
      22             : #include "libavutil/opt.h"
      23             : #include "libavutil/pixdesc.h"
      24             : #include "avfilter.h"
      25             : #include "drawutils.h"
      26             : #include "formats.h"
      27             : #include "internal.h"
      28             : #include "video.h"
      29             : 
      30             : #define R 0
      31             : #define G 1
      32             : #define B 2
      33             : #define A 3
      34             : 
      35             : typedef struct Range {
      36             :     double in_min, in_max;
      37             :     double out_min, out_max;
      38             : } Range;
      39             : 
      40             : typedef struct ColorLevelsContext {
      41             :     const AVClass *class;
      42             :     Range range[4];
      43             :     int nb_comp;
      44             :     int bpp;
      45             :     int step;
      46             :     uint8_t rgba_map[4];
      47             :     int linesize;
      48             : } ColorLevelsContext;
      49             : 
      50             : #define OFFSET(x) offsetof(ColorLevelsContext, x)
      51             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      52             : static const AVOption colorlevels_options[] = {
      53             :     { "rimin", "set input red black point",    OFFSET(range[R].in_min),  AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
      54             :     { "gimin", "set input green black point",  OFFSET(range[G].in_min),  AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
      55             :     { "bimin", "set input blue black point",   OFFSET(range[B].in_min),  AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
      56             :     { "aimin", "set input alpha black point",  OFFSET(range[A].in_min),  AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
      57             :     { "rimax", "set input red white point",    OFFSET(range[R].in_max),  AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
      58             :     { "gimax", "set input green white point",  OFFSET(range[G].in_max),  AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
      59             :     { "bimax", "set input blue white point",   OFFSET(range[B].in_max),  AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
      60             :     { "aimax", "set input alpha white point",  OFFSET(range[A].in_max),  AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
      61             :     { "romin", "set output red black point",   OFFSET(range[R].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0},  0, 1, FLAGS },
      62             :     { "gomin", "set output green black point", OFFSET(range[G].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0},  0, 1, FLAGS },
      63             :     { "bomin", "set output blue black point",  OFFSET(range[B].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0},  0, 1, FLAGS },
      64             :     { "aomin", "set output alpha black point", OFFSET(range[A].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0},  0, 1, FLAGS },
      65             :     { "romax", "set output red white point",   OFFSET(range[R].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1},  0, 1, FLAGS },
      66             :     { "gomax", "set output green white point", OFFSET(range[G].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1},  0, 1, FLAGS },
      67             :     { "bomax", "set output blue white point",  OFFSET(range[B].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1},  0, 1, FLAGS },
      68             :     { "aomax", "set output alpha white point", OFFSET(range[A].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1},  0, 1, FLAGS },
      69             :     { NULL }
      70             : };
      71             : 
      72             : AVFILTER_DEFINE_CLASS(colorlevels);
      73             : 
      74           0 : static int query_formats(AVFilterContext *ctx)
      75             : {
      76             :     static const enum AVPixelFormat pix_fmts[] = {
      77             :         AV_PIX_FMT_0RGB,  AV_PIX_FMT_0BGR,
      78             :         AV_PIX_FMT_ARGB,  AV_PIX_FMT_ABGR,
      79             :         AV_PIX_FMT_RGB0,  AV_PIX_FMT_BGR0,
      80             :         AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
      81             :         AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
      82             :         AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
      83             :         AV_PIX_FMT_RGBA,  AV_PIX_FMT_BGRA,
      84             :         AV_PIX_FMT_NONE
      85             :     };
      86             : 
      87           0 :     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
      88           0 :     if (!fmts_list)
      89           0 :         return AVERROR(ENOMEM);
      90           0 :     return ff_set_common_formats(ctx, fmts_list);
      91             : }
      92             : 
      93           0 : static int config_input(AVFilterLink *inlink)
      94             : {
      95           0 :     AVFilterContext *ctx = inlink->dst;
      96           0 :     ColorLevelsContext *s = ctx->priv;
      97           0 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
      98             : 
      99           0 :     s->nb_comp = desc->nb_components;
     100           0 :     s->bpp = desc->comp[0].depth >> 3;
     101           0 :     s->step = (av_get_padded_bits_per_pixel(desc) >> 3) / s->bpp;
     102           0 :     s->linesize = inlink->w * s->step;
     103           0 :     ff_fill_rgba_map(s->rgba_map, inlink->format);
     104             : 
     105           0 :     return 0;
     106             : }
     107             : 
     108           0 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     109             : {
     110           0 :     AVFilterContext *ctx = inlink->dst;
     111           0 :     ColorLevelsContext *s = ctx->priv;
     112           0 :     AVFilterLink *outlink = ctx->outputs[0];
     113           0 :     const int step = s->step;
     114             :     AVFrame *out;
     115             :     int x, y, i;
     116             : 
     117           0 :     if (av_frame_is_writable(in)) {
     118           0 :         out = in;
     119             :     } else {
     120           0 :         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     121           0 :         if (!out) {
     122           0 :             av_frame_free(&in);
     123           0 :             return AVERROR(ENOMEM);
     124             :         }
     125           0 :         av_frame_copy_props(out, in);
     126             :     }
     127             : 
     128           0 :     switch (s->bpp) {
     129           0 :     case 1:
     130           0 :         for (i = 0; i < s->nb_comp; i++) {
     131           0 :             Range *r = &s->range[i];
     132           0 :             const uint8_t offset = s->rgba_map[i];
     133           0 :             const uint8_t *srcrow = in->data[0];
     134           0 :             uint8_t *dstrow = out->data[0];
     135           0 :             int imin = lrint(r->in_min  * UINT8_MAX);
     136           0 :             int imax = lrint(r->in_max  * UINT8_MAX);
     137           0 :             int omin = lrint(r->out_min * UINT8_MAX);
     138           0 :             int omax = lrint(r->out_max * UINT8_MAX);
     139             :             double coeff;
     140             : 
     141           0 :             if (imin < 0) {
     142           0 :                 imin = UINT8_MAX;
     143           0 :                 for (y = 0; y < inlink->h; y++) {
     144           0 :                     const uint8_t *src = srcrow;
     145             : 
     146           0 :                     for (x = 0; x < s->linesize; x += step)
     147           0 :                         imin = FFMIN(imin, src[x + offset]);
     148           0 :                     srcrow += in->linesize[0];
     149             :                 }
     150             :             }
     151           0 :             if (imax < 0) {
     152           0 :                 srcrow = in->data[0];
     153           0 :                 imax = 0;
     154           0 :                 for (y = 0; y < inlink->h; y++) {
     155           0 :                     const uint8_t *src = srcrow;
     156             : 
     157           0 :                     for (x = 0; x < s->linesize; x += step)
     158           0 :                         imax = FFMAX(imax, src[x + offset]);
     159           0 :                     srcrow += in->linesize[0];
     160             :                 }
     161             :             }
     162             : 
     163           0 :             srcrow = in->data[0];
     164           0 :             coeff = (omax - omin) / (double)(imax - imin);
     165           0 :             for (y = 0; y < inlink->h; y++) {
     166           0 :                 const uint8_t *src = srcrow;
     167           0 :                 uint8_t *dst = dstrow;
     168             : 
     169           0 :                 for (x = 0; x < s->linesize; x += step)
     170           0 :                     dst[x + offset] = av_clip_uint8((src[x + offset] - imin) * coeff + omin);
     171           0 :                 dstrow += out->linesize[0];
     172           0 :                 srcrow += in->linesize[0];
     173             :             }
     174             :         }
     175           0 :         break;
     176           0 :     case 2:
     177           0 :         for (i = 0; i < s->nb_comp; i++) {
     178           0 :             Range *r = &s->range[i];
     179           0 :             const uint8_t offset = s->rgba_map[i];
     180           0 :             const uint8_t *srcrow = in->data[0];
     181           0 :             uint8_t *dstrow = out->data[0];
     182           0 :             int imin = lrint(r->in_min  * UINT16_MAX);
     183           0 :             int imax = lrint(r->in_max  * UINT16_MAX);
     184           0 :             int omin = lrint(r->out_min * UINT16_MAX);
     185           0 :             int omax = lrint(r->out_max * UINT16_MAX);
     186             :             double coeff;
     187             : 
     188           0 :             if (imin < 0) {
     189           0 :                 imin = UINT16_MAX;
     190           0 :                 for (y = 0; y < inlink->h; y++) {
     191           0 :                     const uint16_t *src = (const uint16_t *)srcrow;
     192             : 
     193           0 :                     for (x = 0; x < s->linesize; x += step)
     194           0 :                         imin = FFMIN(imin, src[x + offset]);
     195           0 :                     srcrow += in->linesize[0];
     196             :                 }
     197             :             }
     198           0 :             if (imax < 0) {
     199           0 :                 srcrow = in->data[0];
     200           0 :                 imax = 0;
     201           0 :                 for (y = 0; y < inlink->h; y++) {
     202           0 :                     const uint16_t *src = (const uint16_t *)srcrow;
     203             : 
     204           0 :                     for (x = 0; x < s->linesize; x += step)
     205           0 :                         imax = FFMAX(imax, src[x + offset]);
     206           0 :                     srcrow += in->linesize[0];
     207             :                 }
     208             :             }
     209             : 
     210           0 :             srcrow = in->data[0];
     211           0 :             coeff = (omax - omin) / (double)(imax - imin);
     212           0 :             for (y = 0; y < inlink->h; y++) {
     213           0 :                 const uint16_t *src = (const uint16_t*)srcrow;
     214           0 :                 uint16_t *dst = (uint16_t *)dstrow;
     215             : 
     216           0 :                 for (x = 0; x < s->linesize; x += step)
     217           0 :                     dst[x + offset] = av_clip_uint16((src[x + offset] - imin) * coeff + omin);
     218           0 :                 dstrow += out->linesize[0];
     219           0 :                 srcrow += in->linesize[0];
     220             :             }
     221             :         }
     222             :     }
     223             : 
     224           0 :     if (in != out)
     225           0 :         av_frame_free(&in);
     226           0 :     return ff_filter_frame(outlink, out);
     227             : }
     228             : 
     229             : static const AVFilterPad colorlevels_inputs[] = {
     230             :     {
     231             :         .name         = "default",
     232             :         .type         = AVMEDIA_TYPE_VIDEO,
     233             :         .filter_frame = filter_frame,
     234             :         .config_props = config_input,
     235             :     },
     236             :     { NULL }
     237             : };
     238             : 
     239             : static const AVFilterPad colorlevels_outputs[] = {
     240             :     {
     241             :         .name = "default",
     242             :         .type = AVMEDIA_TYPE_VIDEO,
     243             :     },
     244             :     { NULL }
     245             : };
     246             : 
     247             : AVFilter ff_vf_colorlevels = {
     248             :     .name          = "colorlevels",
     249             :     .description   = NULL_IF_CONFIG_SMALL("Adjust the color levels."),
     250             :     .priv_size     = sizeof(ColorLevelsContext),
     251             :     .priv_class    = &colorlevels_class,
     252             :     .query_formats = query_formats,
     253             :     .inputs        = colorlevels_inputs,
     254             :     .outputs       = colorlevels_outputs,
     255             :     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
     256             : };

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