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