LCOV - code coverage report
Current view: top level - libavfilter - vf_vfrdet.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 29 0.0 %
Date: 2018-05-20 11:54:08 Functions: 0 3 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (C) 2017 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/common.h"
      22             : #include "libavutil/opt.h"
      23             : #include "internal.h"
      24             : 
      25             : typedef struct VFRDETContext {
      26             :     const AVClass *class;
      27             : 
      28             :     int64_t prev_pts;
      29             :     int64_t delta;
      30             :     int64_t min_delta;
      31             :     int64_t max_delta;
      32             : 
      33             :     uint64_t vfr;
      34             :     uint64_t cfr;
      35             : } VFRDETContext;
      36             : 
      37           0 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
      38             : {
      39           0 :     AVFilterContext *ctx = inlink->dst;
      40           0 :     VFRDETContext *s = ctx->priv;
      41             : 
      42           0 :     if (s->prev_pts != AV_NOPTS_VALUE) {
      43           0 :         int64_t delta = in->pts - s->prev_pts;
      44             : 
      45           0 :         if (s->delta == AV_NOPTS_VALUE) {
      46           0 :             s->delta = delta;
      47             :         }
      48             : 
      49           0 :         if (s->delta != delta) {
      50           0 :             s->vfr++;
      51           0 :             s->delta = delta;
      52           0 :             s->min_delta = FFMIN(delta, s->min_delta);
      53           0 :             s->max_delta = FFMAX(delta, s->max_delta);
      54             :         } else {
      55           0 :             s->cfr++;
      56             :         }
      57             :     }
      58             : 
      59           0 :     s->prev_pts = in->pts;
      60             : 
      61           0 :     return ff_filter_frame(ctx->outputs[0], in);
      62             : }
      63             : 
      64           0 : static av_cold int init(AVFilterContext *ctx)
      65             : {
      66           0 :     VFRDETContext *s = ctx->priv;
      67             : 
      68           0 :     s->prev_pts = AV_NOPTS_VALUE;
      69           0 :     s->delta    = AV_NOPTS_VALUE;
      70           0 :     s->min_delta = INT64_MAX;
      71           0 :     s->max_delta = INT64_MIN;
      72             : 
      73           0 :     return 0;
      74             : }
      75             : 
      76           0 : static av_cold void uninit(AVFilterContext *ctx)
      77             : {
      78           0 :     VFRDETContext *s = ctx->priv;
      79             : 
      80           0 :     av_log(ctx, AV_LOG_INFO, "VFR:%f (%"PRIu64"/%"PRIu64")", s->vfr / (float)(s->vfr + s->cfr), s->vfr, s->cfr);
      81           0 :     if (s->vfr)
      82           0 :         av_log(ctx, AV_LOG_INFO, " min: %"PRId64" max: %"PRId64")", s->min_delta, s->max_delta);
      83           0 :     av_log(ctx, AV_LOG_INFO, "\n");
      84           0 : }
      85             : 
      86             : static const AVFilterPad vfrdet_inputs[] = {
      87             :     {
      88             :         .name         = "default",
      89             :         .type         = AVMEDIA_TYPE_VIDEO,
      90             :         .filter_frame = filter_frame,
      91             :     },
      92             :     { NULL }
      93             : };
      94             : 
      95             : static const AVFilterPad vfrdet_outputs[] = {
      96             :     {
      97             :         .name = "default",
      98             :         .type = AVMEDIA_TYPE_VIDEO,
      99             :     },
     100             :     { NULL }
     101             : };
     102             : 
     103             : AVFilter ff_vf_vfrdet = {
     104             :     .name        = "vfrdet",
     105             :     .description = NULL_IF_CONFIG_SMALL("Variable frame rate detect filter."),
     106             :     .priv_size   = sizeof(VFRDETContext),
     107             :     .init        = init,
     108             :     .uninit      = uninit,
     109             :     .inputs      = vfrdet_inputs,
     110             :     .outputs     = vfrdet_outputs,
     111             : };

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