FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/yadif_common.c
Date: 2026-04-22 18:56:46
Exec Total Coverage
Lines: 104 151 68.9%
Functions: 6 7 85.7%
Branches: 60 108 55.6%
Line Branch Exec Source
1 /*
2 * Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
3 * 2010 James Darnley <james.darnley@gmail.com>
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/avassert.h"
23 #include "libavutil/imgutils.h"
24 #include "filters.h"
25 #include "video.h"
26 #include "yadif.h"
27
28 306 static int return_frame(AVFilterContext *ctx, int is_second)
29 {
30 306 YADIFContext *yadif = ctx->priv;
31 306 AVFilterLink *link = ctx->outputs[0];
32 int tff, ret;
33
34
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 306 if (yadif->parity == -1) {
35 306 tff = (yadif->cur->flags & AV_FRAME_FLAG_INTERLACED) ?
36
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 306 !!(yadif->cur->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) : 1;
37 } else {
38 ✗ tff = yadif->parity ^ 1;
39 }
40
41
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 306 if (is_second) {
42 60 yadif->out = ff_get_video_buffer(link, link->w, link->h);
43
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 60 if (!yadif->out)
44 ✗ return AVERROR(ENOMEM);
45
46 60 av_frame_copy_props(yadif->out, yadif->cur);
47 60 yadif->out->flags &= ~AV_FRAME_FLAG_INTERLACED;
48
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 60 if (yadif->current_field == YADIF_FIELD_BACK_END)
49 ✗ yadif->current_field = YADIF_FIELD_END;
50 }
51
52 306 yadif->filter(ctx, yadif->out, tff ^ !is_second, tff);
53
54
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 306 if (is_second) {
55 60 int64_t cur_pts = yadif->cur->pts;
56 60 int64_t next_pts = yadif->next->pts;
57
58
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 60 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
59 60 yadif->out->pts = cur_pts + next_pts;
60
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 60 if (yadif->pts_multiplier == 1) {
61 ✗ yadif->out->pts >>= 1;
62 ✗ yadif->out->duration >>= 1;
63 }
64 } else {
65 ✗ yadif->out->pts = AV_NOPTS_VALUE;
66 }
67 }
68
69 306 ff_ccfifo_inject(&yadif->cc_fifo, yadif->out);
70 306 ret = ff_filter_frame(ctx->outputs[0], yadif->out);
71
72
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 306 yadif->frame_pending = (yadif->mode&1) && !is_second;
73 306 return ret;
74 }
75
76 1254 static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b)
77 {
78 int i;
79
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 5016 for (i = 0; i < yadif->csp->nb_components; i++)
80
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 3762 if (a->linesize[i] != b->linesize[i])
81 ✗ return 1;
82 1254 return 0;
83 }
84
85 ✗ static void fixstride(AVFilterLink *link, AVFrame *f)
86 {
87 ✗ AVFrame *dst = ff_default_get_video_buffer(link, f->width, f->height);
88 ✗ if(!dst)
89 ✗ return;
90 ✗ av_frame_copy_props(dst, f);
91 ✗ av_image_copy2(dst->data, dst->linesize,
92 ✗ f->data, f->linesize,
93 ✗ dst->format, dst->width, dst->height);
94 ✗ av_frame_unref(f);
95 ✗ av_frame_move_ref(f, dst);
96 ✗ av_frame_free(&dst);
97 }
98
99 254 int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame)
100 {
101 254 AVFilterContext *ctx = link->dst;
102 254 YADIFContext *yadif = ctx->priv;
103
104
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 254 av_assert0(frame);
105
106 254 ff_ccfifo_extract(&yadif->cc_fifo, frame);
107
108
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 254 if (yadif->frame_pending)
109 ✗ return_frame(ctx, 1);
110
111
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 254 if (yadif->prev)
112 238 av_frame_free(&yadif->prev);
113 254 yadif->prev = yadif->cur;
114 254 yadif->cur = yadif->next;
115 254 yadif->next = frame;
116
117
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 254 if (!yadif->cur) {
118 8 yadif->cur = av_frame_clone(yadif->next);
119
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 8 if (!yadif->cur)
120 ✗ return AVERROR(ENOMEM);
121 8 yadif->current_field = YADIF_FIELD_END;
122 }
123
124
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 254 if (checkstride(yadif, yadif->next, yadif->cur)) {
125 ✗ av_log(ctx, AV_LOG_VERBOSE, "Reallocating frame due to differing stride\n");
126 ✗ fixstride(link, yadif->next);
127 }
128
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 254 if (checkstride(yadif, yadif->next, yadif->cur))
129 ✗ fixstride(link, yadif->cur);
130
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 254 if (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))
131 ✗ fixstride(link, yadif->prev);
132
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 254 if (checkstride(yadif, yadif->next, yadif->cur) || (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))) {
133 ✗ av_log(ctx, AV_LOG_ERROR, "Failed to reallocate frame\n");
134 ✗ return -1;
135 }
136
137
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 254 if (!yadif->prev)
138 8 return 0;
139
140
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 246 if ((yadif->deint && !(yadif->cur->flags & AV_FRAME_FLAG_INTERLACED)) ||
141
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 246 ctx->is_disabled ||
142
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 246 (yadif->deint && !(yadif->prev->flags & AV_FRAME_FLAG_INTERLACED) && yadif->prev->repeat_pict) ||
143
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 246 (yadif->deint && !(yadif->next->flags & AV_FRAME_FLAG_INTERLACED) && yadif->next->repeat_pict)
144 ) {
145 ✗ yadif->out = av_frame_clone(yadif->cur);
146 ✗ if (!yadif->out)
147 ✗ return AVERROR(ENOMEM);
148
149 ✗ ff_ccfifo_inject(&yadif->cc_fifo, yadif->out);
150 ✗ av_frame_free(&yadif->prev);
151 ✗ if (yadif->out->pts != AV_NOPTS_VALUE)
152 ✗ yadif->out->pts *= yadif->pts_multiplier;
153 ✗ yadif->out->duration *= yadif->pts_multiplier;
154 ✗ return ff_filter_frame(ctx->outputs[0], yadif->out);
155 }
156
157 246 yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h);
158
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 246 if (!yadif->out)
159 ✗ return AVERROR(ENOMEM);
160
161 246 av_frame_copy_props(yadif->out, yadif->cur);
162 246 yadif->out->flags &= ~AV_FRAME_FLAG_INTERLACED;
163
164
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 246 if (yadif->out->pts != AV_NOPTS_VALUE)
165 246 yadif->out->pts *= yadif->pts_multiplier;
166
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 246 if (!(yadif->mode & 1))
167 186 yadif->out->duration *= yadif->pts_multiplier;
168
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 60 else if (yadif->pts_multiplier == 1)
169 ✗ yadif->out->duration >>= 1;
170
171 246 return return_frame(ctx, 0);
172 }
173
174 312 int ff_yadif_request_frame(AVFilterLink *link)
175 {
176 312 AVFilterContext *ctx = link->src;
177 312 YADIFContext *yadif = ctx->priv;
178 int ret;
179
180
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 312 if (yadif->frame_pending) {
181 60 return_frame(ctx, 1);
182 60 return 0;
183 }
184
185
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 252 if (yadif->eof)
186 ✗ return AVERROR_EOF;
187
188 252 ret = ff_request_frame(ctx->inputs[0]);
189
190
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 252 if (ret == AVERROR_EOF && yadif->cur) {
191 6 AVFrame *next = av_frame_clone(yadif->next);
192
193
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 6 if (!next)
194 ✗ return AVERROR(ENOMEM);
195
196 6 yadif->current_field = YADIF_FIELD_BACK_END;
197 6 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
198
199 6 ff_yadif_filter_frame(ctx->inputs[0], next);
200 6 yadif->eof = 1;
201
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 246 } else if (ret < 0) {
202 ✗ return ret;
203 }
204
205 252 return 0;
206 }
207
208 8 int ff_yadif_config_output_common(AVFilterLink *outlink)
209 {
210 8 AVFilterContext *ctx = outlink->src;
211 8 FilterLink *il = ff_filter_link(ctx->inputs[0]);
212 8 FilterLink *ol = ff_filter_link(outlink);
213 8 YADIFContext *yadif = ctx->priv;
214 8 AVRational tb = ctx->inputs[0]->time_base;
215 int ret;
216
217
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 8 if (av_reduce(&outlink->time_base.num, &outlink->time_base.den, tb.num, tb.den * 2LL, INT_MAX)) {
218 8 yadif->pts_multiplier = 2;
219 } else {
220 ✗ av_log(ctx, AV_LOG_WARNING, "Cannot use exact output timebase\n");
221 ✗ outlink->time_base = tb;
222 ✗ yadif->pts_multiplier = 1;
223 }
224
225 8 outlink->w = ctx->inputs[0]->w;
226 8 outlink->h = ctx->inputs[0]->h;
227
228
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 8 if (outlink->w < 3 || outlink->h < 3) {
229 ✗ av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
230 ✗ return AVERROR(EINVAL);
231 }
232
233
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 8 if(yadif->mode & 1)
234 2 ol->frame_rate = av_mul_q(il->frame_rate,
235 2 (AVRational){2, 1});
236 else
237 6 ol->frame_rate = il->frame_rate;
238
239 8 ret = ff_ccfifo_init(&yadif->cc_fifo, ol->frame_rate, ctx);
240
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 8 if (ret < 0) {
241 ✗ av_log(ctx, AV_LOG_ERROR, "Failure to setup CC FIFO queue\n");
242 ✗ return ret;
243 }
244
245 8 return 0;
246 }
247
248 16 void ff_yadif_uninit(AVFilterContext *ctx)
249 {
250 16 YADIFContext *yadif = ctx->priv;
251
252 16 av_frame_free(&yadif->prev);
253 16 av_frame_free(&yadif->cur );
254 16 av_frame_free(&yadif->next);
255 16 ff_ccfifo_uninit(&yadif->cc_fifo);
256 16 }
257
258 #define OFFSET(x) offsetof(YADIFContext, x)
259 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
260
261 #define CONST(name, help, val, u) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, .unit = u }
262
263 const AVOption ff_yadif_options[] = {
264 { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, .unit = "mode"},
265 CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
266 CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
267 CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"),
268 CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"),
269
270 { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, .unit = "parity" },
271 CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
272 CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
273 CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
274
275 { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, .unit = "deint" },
276 CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
277 CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
278
279 { NULL }
280 };
281