LCOV - code coverage report
Current view: top level - libavfilter - vf_cover_rect.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 109 0.0 %
Date: 2017-12-15 11:05:35 Functions: 0 7 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2014-2015 Michael Niedermayer <michaelni@gmx.at>
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or modify
       7             :  * it under the terms of the GNU General Public License as published by
       8             :  * the Free Software Foundation; either version 2 of the License, or
       9             :  * (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
      14             :  * GNU General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU General Public License along
      17             :  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
      18             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      19             :  */
      20             : 
      21             : /**
      22             :  * @todo switch to dualinput
      23             :  */
      24             : 
      25             : #include "libavutil/avassert.h"
      26             : #include "libavutil/imgutils.h"
      27             : #include "libavutil/opt.h"
      28             : #include "internal.h"
      29             : 
      30             : #include "lavfutils.h"
      31             : 
      32             : enum mode {
      33             :     MODE_COVER,
      34             :     MODE_BLUR,
      35             :     NB_MODES
      36             : };
      37             : 
      38             : typedef struct CoverContext {
      39             :     AVClass *class;
      40             :     int mode;
      41             :     char *cover_filename;
      42             :     AVFrame *cover_frame;
      43             :     int width, height;
      44             : } CoverContext;
      45             : 
      46             : #define OFFSET(x) offsetof(CoverContext, x)
      47             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      48             : static const AVOption cover_rect_options[] = {
      49             :     { "cover",  "cover bitmap filename",  OFFSET(cover_filename),  AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS },
      50             :     { "mode", "set removal mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_BLUR}, 0, NB_MODES - 1, FLAGS, "mode" },
      51             :         { "cover", "cover area with bitmap", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_COVER}, INT_MIN, INT_MAX, FLAGS, "mode" },
      52             :         { "blur", "blur area", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_BLUR}, INT_MIN, INT_MAX, FLAGS, "mode" },
      53             :     { NULL }
      54             : };
      55             : 
      56             : AVFILTER_DEFINE_CLASS(cover_rect);
      57             : 
      58           0 : static int query_formats(AVFilterContext *ctx)
      59             : {
      60             :     static const enum AVPixelFormat pix_fmts[] = {
      61             :         AV_PIX_FMT_YUV420P,
      62             :         AV_PIX_FMT_YUVJ420P,
      63             :         AV_PIX_FMT_NONE
      64             :     };
      65             : 
      66           0 :     return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
      67             : }
      68             : 
      69           0 : static int config_input(AVFilterLink *inlink)
      70             : {
      71           0 :     return 0;
      72             : }
      73             : 
      74           0 : static void cover_rect(CoverContext *cover, AVFrame *in, int offx, int offy)
      75             : {
      76             :     int x, y, p;
      77             : 
      78           0 :     for (p = 0; p < 3; p++) {
      79           0 :         uint8_t *data = in->data[p] + (offx>>!!p) + (offy>>!!p) * in->linesize[p];
      80           0 :         const uint8_t *src = cover->cover_frame->data[p];
      81           0 :         int w = AV_CEIL_RSHIFT(cover->cover_frame->width , !!p);
      82           0 :         int h = AV_CEIL_RSHIFT(cover->cover_frame->height, !!p);
      83           0 :         for (y = 0; y < h; y++) {
      84           0 :             for (x = 0; x < w; x++) {
      85           0 :                 data[x] = src[x];
      86             :             }
      87           0 :             data += in->linesize[p];
      88           0 :             src += cover->cover_frame->linesize[p];
      89             :         }
      90             :     }
      91           0 : }
      92           0 : static void blur(CoverContext *cover, AVFrame *in, int offx, int offy)
      93             : {
      94             :     int x, y, p;
      95             : 
      96           0 :     for (p=0; p<3; p++) {
      97           0 :         int ox = offx>>!!p;
      98           0 :         int oy = offy>>!!p;
      99           0 :         int stride = in->linesize[p];
     100           0 :         uint8_t *data = in->data[p] + ox + oy * stride;
     101           0 :         int w = AV_CEIL_RSHIFT(cover->width , !!p);
     102           0 :         int h = AV_CEIL_RSHIFT(cover->height, !!p);
     103           0 :         int iw = AV_CEIL_RSHIFT(in->width , !!p);
     104           0 :         int ih = AV_CEIL_RSHIFT(in->height, !!p);
     105           0 :         for (y = 0; y < h; y++) {
     106           0 :             for (x = 0; x < w; x++) {
     107           0 :                 int c = 0;
     108           0 :                 int s = 0;
     109           0 :                 if (ox) {
     110           0 :                     int scale = 65536 / (x + 1);
     111           0 :                     s += data[-1 + y*stride] * scale;
     112           0 :                     c += scale;
     113             :                 }
     114           0 :                 if (oy) {
     115           0 :                     int scale = 65536 / (y + 1);
     116           0 :                     s += data[x - stride] * scale;
     117           0 :                     c += scale;
     118             :                 }
     119           0 :                 if (ox + w < iw) {
     120           0 :                     int scale = 65536 / (w - x);
     121           0 :                     s += data[w + y*stride] * scale;
     122           0 :                     c += scale;
     123             :                 }
     124           0 :                 if (oy + h < ih) {
     125           0 :                     int scale = 65536 / (h - y);
     126           0 :                     s += data[x + h*stride] * scale;
     127           0 :                     c += scale;
     128             :                 }
     129           0 :                 data[x + y*stride] = c ? (s + (c>>1)) / c : 0;
     130             :             }
     131             :         }
     132             :     }
     133           0 : }
     134             : 
     135           0 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     136             : {
     137           0 :     AVFilterContext *ctx = inlink->dst;
     138           0 :     CoverContext *cover = ctx->priv;
     139             :     AVDictionaryEntry *ex, *ey, *ew, *eh;
     140           0 :     int x = -1, y = -1, w = -1, h = -1;
     141           0 :     char *xendptr = NULL, *yendptr = NULL, *wendptr = NULL, *hendptr = NULL;
     142             : 
     143           0 :     ex = av_dict_get(in->metadata, "lavfi.rect.x", NULL, AV_DICT_MATCH_CASE);
     144           0 :     ey = av_dict_get(in->metadata, "lavfi.rect.y", NULL, AV_DICT_MATCH_CASE);
     145           0 :     ew = av_dict_get(in->metadata, "lavfi.rect.w", NULL, AV_DICT_MATCH_CASE);
     146           0 :     eh = av_dict_get(in->metadata, "lavfi.rect.h", NULL, AV_DICT_MATCH_CASE);
     147           0 :     if (ex && ey && ew && eh) {
     148           0 :         x = strtol(ex->value, &xendptr, 10);
     149           0 :         y = strtol(ey->value, &yendptr, 10);
     150           0 :         w = strtol(ew->value, &wendptr, 10);
     151           0 :         h = strtol(eh->value, &hendptr, 10);
     152             :     }
     153             : 
     154           0 :     if (!xendptr || *xendptr || !yendptr || *yendptr ||
     155           0 :         !wendptr || *wendptr || !hendptr || !hendptr
     156             :     ) {
     157           0 :         return ff_filter_frame(ctx->outputs[0], in);
     158             :     }
     159             : 
     160           0 :     if (x < 0) {
     161           0 :         w += x;
     162           0 :         x = 0;
     163             :     }
     164           0 :     if (y < 0) {
     165           0 :         h += y;
     166           0 :         y = 0;
     167             :     }
     168           0 :     w = FFMIN(w, in->width  - x);
     169           0 :     h = FFMIN(h, in->height - y);
     170             : 
     171           0 :     if (w > in->width || h > in->height || w <= 0 || h <= 0)
     172           0 :         return AVERROR(EINVAL);
     173             : 
     174           0 :     if (cover->cover_frame) {
     175           0 :         if (w != cover->cover_frame->width || h != cover->cover_frame->height)
     176           0 :             return AVERROR(EINVAL);
     177             :     }
     178             : 
     179           0 :     cover->width  = w;
     180           0 :     cover->height = h;
     181             : 
     182           0 :     x = av_clip(x, 0, in->width  - w);
     183           0 :     y = av_clip(y, 0, in->height - h);
     184             : 
     185           0 :     av_frame_make_writable(in);
     186             : 
     187           0 :     if (cover->mode == MODE_BLUR) {
     188           0 :         blur (cover, in, x, y);
     189             :     } else {
     190           0 :         cover_rect(cover, in, x, y);
     191             :     }
     192           0 :     return ff_filter_frame(ctx->outputs[0], in);
     193             : }
     194             : 
     195           0 : static av_cold void uninit(AVFilterContext *ctx)
     196             : {
     197           0 :     CoverContext *cover = ctx->priv;
     198             : 
     199           0 :     if (cover->cover_frame)
     200           0 :         av_freep(&cover->cover_frame->data[0]);
     201           0 : }
     202             : 
     203           0 : static av_cold int init(AVFilterContext *ctx)
     204             : {
     205           0 :     CoverContext *cover = ctx->priv;
     206             :     int ret;
     207             : 
     208           0 :     if (cover->mode == MODE_COVER) {
     209           0 :         if (!cover->cover_filename) {
     210           0 :             av_log(ctx, AV_LOG_ERROR, "cover filename not set\n");
     211           0 :             return AVERROR(EINVAL);
     212             :         }
     213             : 
     214           0 :         cover->cover_frame = av_frame_alloc();
     215           0 :         if (!cover->cover_frame)
     216           0 :             return AVERROR(ENOMEM);
     217             : 
     218           0 :         if ((ret = ff_load_image(cover->cover_frame->data, cover->cover_frame->linesize,
     219           0 :                                 &cover->cover_frame->width, &cover->cover_frame->height,
     220           0 :                                 &cover->cover_frame->format, cover->cover_filename, ctx)) < 0)
     221           0 :             return ret;
     222             : 
     223           0 :         if (cover->cover_frame->format != AV_PIX_FMT_YUV420P && cover->cover_frame->format != AV_PIX_FMT_YUVJ420P) {
     224           0 :             av_log(ctx, AV_LOG_ERROR, "cover image is not a YUV420 image\n");
     225           0 :             return AVERROR(EINVAL);
     226             :         }
     227             :     }
     228             : 
     229           0 :     return 0;
     230             : }
     231             : 
     232             : static const AVFilterPad cover_rect_inputs[] = {
     233             :     {
     234             :         .name         = "default",
     235             :         .type         = AVMEDIA_TYPE_VIDEO,
     236             :         .config_props = config_input,
     237             :         .filter_frame = filter_frame,
     238             :     },
     239             :     { NULL }
     240             : };
     241             : 
     242             : static const AVFilterPad cover_rect_outputs[] = {
     243             :     {
     244             :         .name = "default",
     245             :         .type = AVMEDIA_TYPE_VIDEO,
     246             :     },
     247             :     { NULL }
     248             : };
     249             : 
     250             : AVFilter ff_vf_cover_rect = {
     251             :     .name            = "cover_rect",
     252             :     .description     = NULL_IF_CONFIG_SMALL("Find and cover a user specified object."),
     253             :     .priv_size       = sizeof(CoverContext),
     254             :     .init            = init,
     255             :     .uninit          = uninit,
     256             :     .query_formats   = query_formats,
     257             :     .inputs          = cover_rect_inputs,
     258             :     .outputs         = cover_rect_outputs,
     259             :     .priv_class      = &cover_rect_class,
     260             : };

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