LCOV - code coverage report
Current view: top level - libavfilter - vf_hysteresis.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 152 0.0 %
Date: 2017-12-14 01:15:32 Functions: 0 15 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2013 Oka Motofumi (chikuzen.mo at gmail dot com)
       3             :  * Copyright (c) 2016 Paul B Mahol
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (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 GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "libavutil/imgutils.h"
      23             : #include "libavutil/pixdesc.h"
      24             : #include "libavutil/opt.h"
      25             : #include "avfilter.h"
      26             : #include "formats.h"
      27             : #include "internal.h"
      28             : #include "video.h"
      29             : #include "framesync.h"
      30             : 
      31             : #define OFFSET(x) offsetof(HysteresisContext, x)
      32             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      33             : 
      34             : typedef struct HysteresisContext {
      35             :     const AVClass *class;
      36             :     FFFrameSync fs;
      37             : 
      38             :     int planes;
      39             :     int threshold;
      40             : 
      41             :     int width[4], height[4];
      42             :     int nb_planes;
      43             :     int depth;
      44             : 
      45             :     uint8_t *map;
      46             :     uint32_t *xy;
      47             :     int index;
      48             : 
      49             :     void (*hysteresis)(struct HysteresisContext *s, const uint8_t *bsrc, const uint8_t *osrc, uint8_t *dst,
      50             :                        ptrdiff_t blinesize, ptrdiff_t olinesize,
      51             :                        ptrdiff_t destlinesize,
      52             :                        int w, int h);
      53             : } HysteresisContext;
      54             : 
      55             : static const AVOption hysteresis_options[] = {
      56             :     { "planes",    "set planes",    OFFSET(planes),    AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
      57             :     { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=0},   0, UINT16_MAX, FLAGS },
      58             :     { NULL }
      59             : };
      60             : 
      61           0 : static int query_formats(AVFilterContext *ctx)
      62             : {
      63             :     static const enum AVPixelFormat pix_fmts[] = {
      64             :         AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
      65             :         AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
      66             :         AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
      67             :         AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
      68             :         AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
      69             :         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
      70             :         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
      71             :         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
      72             :         AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
      73             :         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
      74             :         AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
      75             :         AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
      76             :         AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
      77             :         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
      78             :         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
      79             :         AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
      80             :         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
      81             :         AV_PIX_FMT_NONE
      82             :     };
      83             : 
      84           0 :     return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
      85             : }
      86             : 
      87           0 : static int process_frame(FFFrameSync *fs)
      88             : {
      89           0 :     AVFilterContext *ctx = fs->parent;
      90           0 :     HysteresisContext *s = fs->opaque;
      91           0 :     AVFilterLink *outlink = ctx->outputs[0];
      92             :     AVFrame *out, *base, *alt;
      93             :     int ret;
      94             : 
      95           0 :     if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
      96           0 :         (ret = ff_framesync_get_frame(&s->fs, 1, &alt,  0)) < 0)
      97           0 :         return ret;
      98             : 
      99           0 :     if (ctx->is_disabled) {
     100           0 :         out = av_frame_clone(base);
     101           0 :         if (!out)
     102           0 :             return AVERROR(ENOMEM);
     103             :     } else {
     104             :         int p;
     105             : 
     106           0 :         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     107           0 :         if (!out)
     108           0 :             return AVERROR(ENOMEM);
     109           0 :         av_frame_copy_props(out, base);
     110             : 
     111           0 :         for (p = 0; p < s->nb_planes; p++) {
     112           0 :             if (!((1 << p) & s->planes)) {
     113           0 :                 av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
     114             :                                     s->width[p], s->height[p]);
     115           0 :                 continue;
     116             :             } else {
     117             :                 int y;
     118             : 
     119           0 :                 for (y = 0; y < s->height[p]; y++) {
     120           0 :                     memset(out->data[p] + y * out->linesize[p], 0, s->width[p]);
     121             :                 }
     122             :             }
     123             : 
     124           0 :             s->index = -1;
     125           0 :             memset(s->map, 0, s->width[0] * s->height[0]);
     126           0 :             memset(s->xy, 0, s->width[0] * s->height[0] * 4);
     127             : 
     128           0 :             s->hysteresis(s, base->data[p], alt->data[p],
     129             :                           out->data[p],
     130           0 :                           base->linesize[p], alt->linesize[p],
     131           0 :                           out->linesize[p],
     132             :                           s->width[p], s->height[p]);
     133             :         }
     134             :     }
     135           0 :     out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
     136             : 
     137           0 :     return ff_filter_frame(outlink, out);
     138             : }
     139             : 
     140           0 : static int passed(HysteresisContext *s, int x, int y, int w)
     141             : {
     142           0 :     return s->map[x + y * w];
     143             : }
     144             : 
     145           0 : static void push(HysteresisContext *s, int x, int y, int w)
     146             : {
     147           0 :     s->map[x + y * w] = 0xff;
     148           0 :     s->xy[++s->index] = (uint16_t)(x) << 16 | (uint16_t)y;
     149           0 : }
     150             : 
     151           0 : static void pop(HysteresisContext *s, int *x, int *y)
     152             : {
     153           0 :     uint32_t val = s->xy[s->index--];
     154             : 
     155           0 :     *x = val >> 16;
     156           0 :     *y = val & 0x0000FFFF;
     157           0 : }
     158             : 
     159           0 : static int is_empty(HysteresisContext *s)
     160             : {
     161           0 :     return s->index < 0;
     162             : }
     163             : 
     164           0 : static void hysteresis8(HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc,
     165             :                         uint8_t *dst,
     166             :                         ptrdiff_t blinesize, ptrdiff_t alinesize,
     167             :                         ptrdiff_t dlinesize,
     168             :                         int w, int h)
     169             : {
     170           0 :     const int t = s->threshold;
     171             :     int x, y;
     172             : 
     173           0 :     for (y = 0; y < h; y++) {
     174           0 :         for (x = 0; x < w; x++) {
     175           0 :             if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) {
     176             :                 int posx, posy;
     177             : 
     178           0 :                 dst[x + y * dlinesize] = asrc[x + y * alinesize];
     179             : 
     180           0 :                 push(s, x, y, w);
     181             : 
     182           0 :                 while (!is_empty(s)) {
     183             :                     int x_min, x_max, y_min, y_max, yy, xx;
     184             : 
     185           0 :                     pop(s, &posx, &posy);
     186             : 
     187           0 :                     x_min = posx > 0 ? posx - 1 : 0;
     188           0 :                     x_max = posx < w - 1 ? posx + 1 : posx;
     189           0 :                     y_min = posy > 0 ? posy - 1 : 0;
     190           0 :                     y_max = posy < h - 1 ? posy + 1 : posy;
     191             : 
     192           0 :                     for (yy = y_min; yy <= y_max; yy++) {
     193           0 :                         for (xx = x_min; xx <= x_max; xx++) {
     194           0 :                             if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) {
     195           0 :                                 dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
     196           0 :                                 push(s, xx, yy, w);
     197             :                             }
     198             :                         }
     199             :                     }
     200             :                 }
     201             :             }
     202             :         }
     203             :     }
     204           0 : }
     205             : 
     206           0 : static void hysteresis16(HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc,
     207             :                         uint8_t *ddst,
     208             :                         ptrdiff_t blinesize, ptrdiff_t alinesize,
     209             :                         ptrdiff_t dlinesize,
     210             :                         int w, int h)
     211             : {
     212           0 :     const uint16_t *bsrc = (const uint16_t *)bbsrc;
     213           0 :     const uint16_t *asrc = (const uint16_t *)aasrc;
     214           0 :     uint16_t *dst = (uint16_t *)ddst;
     215           0 :     const int t = s->threshold;
     216             :     int x, y;
     217             : 
     218           0 :     blinesize /= 2;
     219           0 :     alinesize /= 2;
     220           0 :     dlinesize /= 2;
     221             : 
     222           0 :     for (y = 0; y < h; y++) {
     223           0 :         for (x = 0; x < w; x++) {
     224           0 :             if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) {
     225             :                 int posx, posy;
     226             : 
     227           0 :                 dst[x + y * dlinesize] = asrc[x + y * alinesize];
     228             : 
     229           0 :                 push(s, x, y, w);
     230             : 
     231           0 :                 while (!is_empty(s)) {
     232             :                     int x_min, x_max, y_min, y_max, yy, xx;
     233             : 
     234           0 :                     pop(s, &posx, &posy);
     235             : 
     236           0 :                     x_min = posx > 0 ? posx - 1 : 0;
     237           0 :                     x_max = posx < w - 1 ? posx + 1 : posx;
     238           0 :                     y_min = posy > 0 ? posy - 1 : 0;
     239           0 :                     y_max = posy < h - 1 ? posy + 1 : posy;
     240             : 
     241           0 :                     for (yy = y_min; yy <= y_max; yy++) {
     242           0 :                         for (xx = x_min; xx <= x_max; xx++) {
     243           0 :                             if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) {
     244           0 :                                 dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
     245           0 :                                 push(s, xx, yy, w);
     246             :                             }
     247             :                         }
     248             :                     }
     249             :                 }
     250             :             }
     251             :         }
     252             :     }
     253           0 : }
     254             : 
     255           0 : static int config_input(AVFilterLink *inlink)
     256             : {
     257           0 :     AVFilterContext *ctx = inlink->dst;
     258           0 :     HysteresisContext *s = ctx->priv;
     259           0 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     260             :     int vsub, hsub;
     261             : 
     262           0 :     s->nb_planes = av_pix_fmt_count_planes(inlink->format);
     263             : 
     264           0 :     hsub = desc->log2_chroma_w;
     265           0 :     vsub = desc->log2_chroma_h;
     266           0 :     s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
     267           0 :     s->height[0] = s->height[3] = inlink->h;
     268           0 :     s->width[1]  = s->width[2]  = AV_CEIL_RSHIFT(inlink->w, hsub);
     269           0 :     s->width[0]  = s->width[3]  = inlink->w;
     270             : 
     271           0 :     s->depth = desc->comp[0].depth;
     272             : 
     273           0 :     if (desc->comp[0].depth == 8)
     274           0 :         s->hysteresis = hysteresis8;
     275             :     else
     276           0 :         s->hysteresis = hysteresis16;
     277             : 
     278           0 :     s->map = av_calloc(inlink->w, inlink->h * sizeof (*s->map));
     279           0 :     if (!s->map)
     280           0 :         return AVERROR(ENOMEM);
     281             : 
     282           0 :     s->xy = av_calloc(inlink->w, inlink->h * sizeof(*s->xy));
     283           0 :     if (!s->xy)
     284           0 :         return AVERROR(ENOMEM);
     285             : 
     286           0 :     return 0;
     287             : }
     288             : 
     289           0 : static int config_output(AVFilterLink *outlink)
     290             : {
     291           0 :     AVFilterContext *ctx = outlink->src;
     292           0 :     HysteresisContext *s = ctx->priv;
     293           0 :     AVFilterLink *base = ctx->inputs[0];
     294           0 :     AVFilterLink *alt = ctx->inputs[1];
     295             :     FFFrameSyncIn *in;
     296             :     int ret;
     297             : 
     298           0 :     if (base->format != alt->format) {
     299           0 :         av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
     300           0 :         return AVERROR(EINVAL);
     301             :     }
     302           0 :     if (base->w != alt->w || base->h != alt->h) {
     303           0 :         av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
     304             :                "(size %dx%d) do not match the corresponding "
     305             :                "second input link %s parameters (size %dx%d)\n",
     306           0 :                ctx->input_pads[0].name, base->w, base->h,
     307           0 :                ctx->input_pads[1].name,
     308             :                alt->w, alt->h);
     309           0 :         return AVERROR(EINVAL);
     310             :     }
     311             : 
     312           0 :     outlink->w = base->w;
     313           0 :     outlink->h = base->h;
     314           0 :     outlink->time_base = base->time_base;
     315           0 :     outlink->sample_aspect_ratio = base->sample_aspect_ratio;
     316           0 :     outlink->frame_rate = base->frame_rate;
     317             : 
     318           0 :     if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
     319           0 :         return ret;
     320             : 
     321           0 :     in = s->fs.in;
     322           0 :     in[0].time_base = base->time_base;
     323           0 :     in[1].time_base = alt->time_base;
     324           0 :     in[0].sync   = 1;
     325           0 :     in[0].before = EXT_STOP;
     326           0 :     in[0].after  = EXT_INFINITY;
     327           0 :     in[1].sync   = 1;
     328           0 :     in[1].before = EXT_STOP;
     329           0 :     in[1].after  = EXT_INFINITY;
     330           0 :     s->fs.opaque   = s;
     331           0 :     s->fs.on_event = process_frame;
     332             : 
     333           0 :     return ff_framesync_configure(&s->fs);
     334             : }
     335             : 
     336           0 : static int activate(AVFilterContext *ctx)
     337             : {
     338           0 :     HysteresisContext *s = ctx->priv;
     339           0 :     return ff_framesync_activate(&s->fs);
     340             : }
     341             : 
     342           0 : static av_cold void uninit(AVFilterContext *ctx)
     343             : {
     344           0 :     HysteresisContext *s = ctx->priv;
     345             : 
     346           0 :     ff_framesync_uninit(&s->fs);
     347           0 :     av_freep(&s->map);
     348           0 :     av_freep(&s->xy);
     349           0 : }
     350             : 
     351           0 : FRAMESYNC_DEFINE_CLASS(hysteresis, HysteresisContext, fs);
     352             : 
     353             : static const AVFilterPad hysteresis_inputs[] = {
     354             :     {
     355             :         .name         = "base",
     356             :         .type         = AVMEDIA_TYPE_VIDEO,
     357             :         .config_props = config_input,
     358             :     },
     359             :     {
     360             :         .name         = "alt",
     361             :         .type         = AVMEDIA_TYPE_VIDEO,
     362             :     },
     363             :     { NULL }
     364             : };
     365             : 
     366             : static const AVFilterPad hysteresis_outputs[] = {
     367             :     {
     368             :         .name          = "default",
     369             :         .type          = AVMEDIA_TYPE_VIDEO,
     370             :         .config_props  = config_output,
     371             :     },
     372             :     { NULL }
     373             : };
     374             : 
     375             : AVFilter ff_vf_hysteresis = {
     376             :     .name          = "hysteresis",
     377             :     .description   = NULL_IF_CONFIG_SMALL("Grow first stream into second stream by connecting components."),
     378             :     .preinit       = hysteresis_framesync_preinit,
     379             :     .priv_size     = sizeof(HysteresisContext),
     380             :     .uninit        = uninit,
     381             :     .query_formats = query_formats,
     382             :     .activate      = activate,
     383             :     .inputs        = hysteresis_inputs,
     384             :     .outputs       = hysteresis_outputs,
     385             :     .priv_class    = &hysteresis_class,
     386             :     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
     387             : };

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