| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2019 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/avstring.h" | ||
| 22 | #include "libavutil/common.h" | ||
| 23 | #include "libavutil/internal.h" | ||
| 24 | #include "libavutil/opt.h" | ||
| 25 | |||
| 26 | #include "avfilter.h" | ||
| 27 | #include "filters.h" | ||
| 28 | #include "internal.h" | ||
| 29 | #include "video.h" | ||
| 30 | |||
| 31 | typedef struct FreezeFramesContext { | ||
| 32 | const AVClass *class; | ||
| 33 | int64_t first, last, replace; | ||
| 34 | |||
| 35 | AVFrame *replace_frame; | ||
| 36 | } FreezeFramesContext; | ||
| 37 | |||
| 38 | #define OFFSET(x) offsetof(FreezeFramesContext, x) | ||
| 39 | #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) | ||
| 40 | |||
| 41 | static const AVOption freezeframes_options[] = { | ||
| 42 | { "first", "set first frame to freeze", OFFSET(first), AV_OPT_TYPE_INT64, {.i64=0}, 0, INT64_MAX, FLAGS }, | ||
| 43 | { "last", "set last frame to freeze", OFFSET(last), AV_OPT_TYPE_INT64, {.i64=0}, 0, INT64_MAX, FLAGS }, | ||
| 44 | { "replace", "set frame to replace", OFFSET(replace), AV_OPT_TYPE_INT64, {.i64=0}, 0, INT64_MAX, FLAGS }, | ||
| 45 | { NULL }, | ||
| 46 | }; | ||
| 47 | |||
| 48 | AVFILTER_DEFINE_CLASS(freezeframes); | ||
| 49 | |||
| 50 | ✗ | static int config_output(AVFilterLink *outlink) | |
| 51 | { | ||
| 52 | ✗ | AVFilterContext *ctx = outlink->src; | |
| 53 | ✗ | AVFilterLink *sourcelink = ctx->inputs[0]; | |
| 54 | ✗ | AVFilterLink *replacelink = ctx->inputs[1]; | |
| 55 | |||
| 56 | ✗ | if (sourcelink->w != replacelink->w || sourcelink->h != replacelink->h) { | |
| 57 | ✗ | av_log(ctx, AV_LOG_ERROR, | |
| 58 | "Input frame sizes do not match (%dx%d vs %dx%d).\n", | ||
| 59 | sourcelink->w, sourcelink->h, | ||
| 60 | replacelink->w, replacelink->h); | ||
| 61 | ✗ | return AVERROR(EINVAL); | |
| 62 | } | ||
| 63 | |||
| 64 | ✗ | outlink->w = sourcelink->w; | |
| 65 | ✗ | outlink->h = sourcelink->h; | |
| 66 | ✗ | outlink->time_base = sourcelink->time_base; | |
| 67 | ✗ | outlink->sample_aspect_ratio = sourcelink->sample_aspect_ratio; | |
| 68 | ✗ | outlink->frame_rate = sourcelink->frame_rate; | |
| 69 | |||
| 70 | ✗ | return 0; | |
| 71 | } | ||
| 72 | |||
| 73 | ✗ | static int activate(AVFilterContext *ctx) | |
| 74 | { | ||
| 75 | ✗ | AVFilterLink *outlink = ctx->outputs[0]; | |
| 76 | ✗ | FreezeFramesContext *s = ctx->priv; | |
| 77 | ✗ | AVFrame *frame = NULL; | |
| 78 | ✗ | int drop = ctx->inputs[0]->frame_count_out >= s->first && | |
| 79 | ✗ | ctx->inputs[0]->frame_count_out <= s->last; | |
| 80 | ✗ | int replace = ctx->inputs[1]->frame_count_out == s->replace; | |
| 81 | int ret; | ||
| 82 | |||
| 83 | ✗ | FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, ctx); | |
| 84 | |||
| 85 | ✗ | if (drop && s->replace_frame) { | |
| 86 | ✗ | ret = ff_inlink_consume_frame(ctx->inputs[0], &frame); | |
| 87 | ✗ | if (ret < 0) | |
| 88 | ✗ | return ret; | |
| 89 | |||
| 90 | ✗ | if (frame) { | |
| 91 | ✗ | int64_t dropped_pts = frame->pts; | |
| 92 | |||
| 93 | ✗ | av_frame_free(&frame); | |
| 94 | ✗ | frame = av_frame_clone(s->replace_frame); | |
| 95 | ✗ | if (!frame) | |
| 96 | ✗ | return AVERROR(ENOMEM); | |
| 97 | ✗ | frame->pts = dropped_pts; | |
| 98 | ✗ | return ff_filter_frame(outlink, frame); | |
| 99 | } | ||
| 100 | ✗ | } else if (!drop) { | |
| 101 | ✗ | ret = ff_inlink_consume_frame(ctx->inputs[0], &frame); | |
| 102 | ✗ | if (ret < 0) | |
| 103 | ✗ | return ret; | |
| 104 | |||
| 105 | ✗ | if (frame) | |
| 106 | ✗ | return ff_filter_frame(outlink, frame); | |
| 107 | } | ||
| 108 | |||
| 109 | ✗ | ret = ff_inlink_consume_frame(ctx->inputs[1], &frame); | |
| 110 | ✗ | if (ret < 0) | |
| 111 | ✗ | return ret; | |
| 112 | ✗ | if (replace && frame) { | |
| 113 | ✗ | s->replace_frame = frame; | |
| 114 | ✗ | } else if (frame) { | |
| 115 | ✗ | av_frame_free(&frame); | |
| 116 | } | ||
| 117 | |||
| 118 | ✗ | FF_FILTER_FORWARD_STATUS(ctx->inputs[0], outlink); | |
| 119 | ✗ | FF_FILTER_FORWARD_STATUS(ctx->inputs[1], outlink); | |
| 120 | |||
| 121 | ✗ | if (!drop || (drop && s->replace_frame)) | |
| 122 | ✗ | FF_FILTER_FORWARD_WANTED(outlink, ctx->inputs[0]); | |
| 123 | ✗ | if (!s->replace_frame) | |
| 124 | ✗ | FF_FILTER_FORWARD_WANTED(outlink, ctx->inputs[1]); | |
| 125 | |||
| 126 | ✗ | return FFERROR_NOT_READY; | |
| 127 | } | ||
| 128 | |||
| 129 | ✗ | static av_cold void uninit(AVFilterContext *ctx) | |
| 130 | { | ||
| 131 | ✗ | FreezeFramesContext *s = ctx->priv; | |
| 132 | |||
| 133 | ✗ | av_frame_free(&s->replace_frame); | |
| 134 | ✗ | } | |
| 135 | |||
| 136 | static const AVFilterPad freezeframes_inputs[] = { | ||
| 137 | { | ||
| 138 | .name = "source", | ||
| 139 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 140 | }, | ||
| 141 | { | ||
| 142 | .name = "replace", | ||
| 143 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 144 | }, | ||
| 145 | }; | ||
| 146 | |||
| 147 | static const AVFilterPad freezeframes_outputs[] = { | ||
| 148 | { | ||
| 149 | .name = "default", | ||
| 150 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 151 | .config_props = config_output, | ||
| 152 | }, | ||
| 153 | }; | ||
| 154 | |||
| 155 | const AVFilter ff_vf_freezeframes = { | ||
| 156 | .name = "freezeframes", | ||
| 157 | .description = NULL_IF_CONFIG_SMALL("Freeze video frames."), | ||
| 158 | .priv_size = sizeof(FreezeFramesContext), | ||
| 159 | .priv_class = &freezeframes_class, | ||
| 160 | FILTER_INPUTS(freezeframes_inputs), | ||
| 161 | FILTER_OUTPUTS(freezeframes_outputs), | ||
| 162 | .activate = activate, | ||
| 163 | .uninit = uninit, | ||
| 164 | }; | ||
| 165 |