FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_repeatfields.c
Date: 2025-10-25 08:50:29
Exec Total Coverage
Lines: 0 83 0.0%
Functions: 0 4 0.0%
Branches: 0 40 0.0%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2003 Tobias Diedrich
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 #include "libavutil/imgutils.h"
22 #include "avfilter.h"
23 #include "filters.h"
24 #include "video.h"
25
26 typedef struct RepeatFieldsContext {
27 const AVClass *class;
28 int state;
29 int nb_planes;
30 int linesize[4];
31 int planeheight[4];
32 AVFrame *frame;
33 } RepeatFieldsContext;
34
35 ✗ static av_cold void uninit(AVFilterContext *ctx)
36 {
37 ✗ RepeatFieldsContext *s = ctx->priv;
38
39 ✗ av_frame_free(&s->frame);
40 ✗ }
41
42 static const enum AVPixelFormat pixel_fmts_eq[] = {
43 AV_PIX_FMT_GRAY8,
44 AV_PIX_FMT_YUV410P,
45 AV_PIX_FMT_YUV411P,
46 AV_PIX_FMT_YUV420P,
47 AV_PIX_FMT_YUV422P,
48 AV_PIX_FMT_YUV444P,
49 AV_PIX_FMT_NONE
50 };
51
52 ✗ static int config_input(AVFilterLink *inlink)
53 {
54 ✗ RepeatFieldsContext *s = inlink->dst->priv;
55 ✗ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
56 int ret;
57
58 ✗ if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
59 ✗ return ret;
60
61 ✗ s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
62 ✗ s->planeheight[0] = s->planeheight[3] = inlink->h;
63
64 ✗ s->nb_planes = av_pix_fmt_count_planes(inlink->format);
65
66 ✗ return 0;
67 }
68
69 ✗ static void update_pts(AVFilterLink *link, AVFrame *f, int64_t pts, int fields)
70 {
71 ✗ FilterLink *l = ff_filter_link(link);
72
73 ✗ if (av_cmp_q(l->frame_rate, (AVRational){30000, 1001}) == 0 &&
74 ✗ av_cmp_q(link->time_base, (AVRational){1001, 60000}) <= 0
75 ✗ ) {
76 ✗ f->pts = pts + av_rescale_q(fields, (AVRational){1001, 60000}, link->time_base);
77 } else
78 ✗ f->pts = AV_NOPTS_VALUE;
79 ✗ }
80
81 ✗ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
82 {
83 ✗ AVFilterContext *ctx = inlink->dst;
84 ✗ AVFilterLink *outlink = inlink->dst->outputs[0];
85 ✗ RepeatFieldsContext *s = ctx->priv;
86 int ret, i;
87 ✗ int state = s->state;
88
89 ✗ if (!s->frame) {
90 ✗ s->frame = av_frame_clone(in);
91 ✗ if (!s->frame) {
92 ✗ av_frame_free(&in);
93 ✗ return AVERROR(ENOMEM);
94 }
95 ✗ s->frame->pts = AV_NOPTS_VALUE;
96 }
97
98 ✗ if ((state == 0 && !(in->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST)) ||
99 ✗ (state == 1 && (in->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST))) {
100 ✗ av_log(ctx, AV_LOG_WARNING, "Unexpected field flags: "
101 "state=%d top_field_first=%d repeat_first_field=%d\n",
102 ✗ state, !!(in->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST),
103 ✗ in->repeat_pict);
104 ✗ state ^= 1;
105 }
106
107 ✗ if (state == 0) {
108 AVFrame *new;
109
110 ✗ new = av_frame_clone(in);
111 ✗ if (!new) {
112 ✗ av_frame_free(&in);
113 ✗ return AVERROR(ENOMEM);
114 }
115
116 ✗ ret = ff_filter_frame(outlink, new);
117
118 ✗ if (in->repeat_pict) {
119 ✗ ret = ff_inlink_make_frame_writable(inlink, &s->frame);
120 ✗ if (ret < 0) {
121 ✗ av_frame_free(&in);
122 ✗ return ret;
123 }
124 ✗ update_pts(outlink, s->frame, in->pts, 2);
125 ✗ for (i = 0; i < s->nb_planes; i++) {
126 ✗ av_image_copy_plane(s->frame->data[i], s->frame->linesize[i] * 2,
127 ✗ in->data[i], in->linesize[i] * 2,
128 ✗ s->linesize[i], s->planeheight[i] / 2);
129 }
130 ✗ state = 1;
131 }
132 } else {
133 ✗ for (i = 0; i < s->nb_planes; i++) {
134 ✗ ret = ff_inlink_make_frame_writable(inlink, &s->frame);
135 ✗ if (ret < 0) {
136 ✗ av_frame_free(&in);
137 ✗ return ret;
138 }
139 ✗ av_image_copy_plane(s->frame->data[i] + s->frame->linesize[i], s->frame->linesize[i] * 2,
140 ✗ in->data[i] + in->linesize[i], in->linesize[i] * 2,
141 ✗ s->linesize[i], s->planeheight[i] / 2);
142 }
143
144 ✗ ret = ff_filter_frame(outlink, av_frame_clone(s->frame));
145
146 ✗ if (in->repeat_pict) {
147 AVFrame *new;
148
149 ✗ new = av_frame_clone(in);
150 ✗ if (!new) {
151 ✗ av_frame_free(&in);
152 ✗ return AVERROR(ENOMEM);
153 }
154
155 ✗ ret = ff_filter_frame(outlink, new);
156 ✗ state = 0;
157 } else {
158 ✗ ret = ff_inlink_make_frame_writable(inlink, &s->frame);
159 ✗ if (ret < 0) {
160 ✗ av_frame_free(&in);
161 ✗ return ret;
162 }
163 ✗ update_pts(outlink, s->frame, in->pts, 1);
164 ✗ for (i = 0; i < s->nb_planes; i++) {
165 ✗ av_image_copy_plane(s->frame->data[i], s->frame->linesize[i] * 2,
166 ✗ in->data[i], in->linesize[i] * 2,
167 ✗ s->linesize[i], s->planeheight[i] / 2);
168 }
169 }
170 }
171
172 ✗ s->state = state;
173
174 ✗ av_frame_free(&in);
175 ✗ return ret;
176 }
177
178 static const AVFilterPad repeatfields_inputs[] = {
179 {
180 .name = "default",
181 .type = AVMEDIA_TYPE_VIDEO,
182 .filter_frame = filter_frame,
183 .config_props = config_input,
184 },
185 };
186
187 const FFFilter ff_vf_repeatfields = {
188 .p.name = "repeatfields",
189 .p.description = NULL_IF_CONFIG_SMALL("Hard repeat fields based on MPEG repeat field flag."),
190 .priv_size = sizeof(RepeatFieldsContext),
191 .uninit = uninit,
192 FILTER_INPUTS(repeatfields_inputs),
193 FILTER_OUTPUTS(ff_video_default_filterpad),
194 FILTER_PIXFMTS_ARRAY(pixel_fmts_eq),
195 };
196