FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_yadif.c
Date: 2025-07-18 13:13:50
Exec Total Coverage
Lines: 117 118 99.2%
Functions: 7 7 100.0%
Branches: 155 184 84.2%
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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/common.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "filters.h"
26 #include "yadif.h"
27
28 typedef struct ThreadData {
29 AVFrame *frame;
30 int plane;
31 int w, h;
32 int parity;
33 int tff;
34 } ThreadData;
35
36 #define CHECK(j)\
37 { int score = FFABS(cur[mrefs - 1 + (j)] - cur[prefs - 1 - (j)])\
38 + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
39 + FFABS(cur[mrefs + 1 + (j)] - cur[prefs + 1 - (j)]);\
40 if (score < spatial_score) {\
41 spatial_score= score;\
42 spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
43
44 /* The is_not_edge argument here controls when the code will enter a branch
45 * which reads up to and including x-3 and x+3. */
46
47 #define FILTER(start, end, is_not_edge) \
48 for (x = start; x < end; x++) { \
49 int c = cur[mrefs]; \
50 int d = (prev2[0] + next2[0])>>1; \
51 int e = cur[prefs]; \
52 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
53 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
54 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
55 int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
56 int spatial_pred = (c+e) >> 1; \
57 \
58 if (is_not_edge) {\
59 int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \
60 + FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \
61 CHECK(-1) CHECK(-2) }} }} \
62 CHECK( 1) CHECK( 2) }} }} \
63 }\
64 \
65 if (!(mode&2)) { \
66 int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \
67 int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \
68 int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \
69 int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \
70 \
71 diff = FFMAX3(diff, min, -max); \
72 } \
73 \
74 if (spatial_pred > d + diff) \
75 spatial_pred = d + diff; \
76 else if (spatial_pred < d - diff) \
77 spatial_pred = d - diff; \
78 \
79 dst[0] = spatial_pred; \
80 \
81 dst++; \
82 cur++; \
83 prev++; \
84 next++; \
85 prev2++; \
86 next2++; \
87 }
88
89 52416 static void filter_line_c(void *dst1,
90 void *prev1, void *cur1, void *next1,
91 int w, int prefs, int mrefs, int parity, int mode)
92 {
93 52416 uint8_t *dst = dst1;
94 52416 uint8_t *prev = prev1;
95 52416 uint8_t *cur = cur1;
96 52416 uint8_t *next = next1;
97 int x;
98
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 52416 uint8_t *prev2 = parity ? prev : cur ;
99
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 52416 uint8_t *next2 = parity ? cur : next;
100
101 /* The function is called with the pointers already pointing to data[3] and
102 * with 6 subtracted from the width. This allows the FILTER macro to be
103 * called so that it processes all the pixels normally. A constant value of
104 * true for is_not_edge lets the compiler ignore the if statement. */
105
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 27832896 FILTER(0, w, 1)
106 52416 }
107
108 #define MAX_ALIGN 8
109 52416 static void filter_edges(void *dst1, void *prev1, void *cur1, void *next1,
110 int w, int prefs, int mrefs, int parity, int mode)
111 {
112 52416 uint8_t *dst = dst1;
113 52416 uint8_t *prev = prev1;
114 52416 uint8_t *cur = cur1;
115 52416 uint8_t *next = next1;
116 int x;
117
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 52416 uint8_t *prev2 = parity ? prev : cur ;
118
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 52416 uint8_t *next2 = parity ? cur : next;
119
120 52416 const int edge = MAX_ALIGN - 1;
121 52416 int offset = FFMAX(w - edge, 3);
122
123 /* Only edge pixels need to be processed here. A constant value of false
124 * for is_not_edge should let the compiler ignore the whole branch. */
125
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 209664 FILTER(0, FFMIN(3, w), 0)
126
127 52416 dst = (uint8_t*)dst1 + offset;
128 52416 prev = (uint8_t*)prev1 + offset;
129 52416 cur = (uint8_t*)cur1 + offset;
130 52416 next = (uint8_t*)next1 + offset;
131
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 52416 prev2 = (uint8_t*)(parity ? prev : cur);
132
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 52416 next2 = (uint8_t*)(parity ? cur : next);
133
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 262080 FILTER(offset, w - 3, 1)
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 52416 offset = FFMAX(offset, w - 3);
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 209664 FILTER(offset, w, 0)
137 52416 }
138
139
140 35712 static void filter_line_c_16bit(void *dst1,
141 void *prev1, void *cur1, void *next1,
142 int w, int prefs, int mrefs, int parity,
143 int mode)
144 {
145 35712 uint16_t *dst = dst1;
146 35712 uint16_t *prev = prev1;
147 35712 uint16_t *cur = cur1;
148 35712 uint16_t *next = next1;
149 int x;
150
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 35712 uint16_t *prev2 = parity ? prev : cur ;
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 35712 uint16_t *next2 = parity ? cur : next;
152 35712 mrefs /= 2;
153 35712 prefs /= 2;
154
155
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 19105920 FILTER(0, w, 1)
156 35712 }
157
158 35712 static void filter_edges_16bit(void *dst1, void *prev1, void *cur1, void *next1,
159 int w, int prefs, int mrefs, int parity, int mode)
160 {
161 35712 uint16_t *dst = dst1;
162 35712 uint16_t *prev = prev1;
163 35712 uint16_t *cur = cur1;
164 35712 uint16_t *next = next1;
165 int x;
166
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 35712 uint16_t *prev2 = parity ? prev : cur ;
167
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 35712 uint16_t *next2 = parity ? cur : next;
168
169 35712 const int edge = MAX_ALIGN / 2 - 1;
170 35712 int offset = FFMAX(w - edge, 3);
171
172 35712 mrefs /= 2;
173 35712 prefs /= 2;
174
175
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 142848 FILTER(0, FFMIN(3, w), 0)
176
177 35712 dst = (uint16_t*)dst1 + offset;
178 35712 prev = (uint16_t*)prev1 + offset;
179 35712 cur = (uint16_t*)cur1 + offset;
180 35712 next = (uint16_t*)next1 + offset;
181
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 35712 next2 = (uint16_t*)(parity ? cur : next);
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 35712 FILTER(offset, w - 3, 1)
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 35712 offset = FFMAX(offset, w - 3);
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 142848 FILTER(offset, w, 0)
187 35712 }
188
189 4131 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
190 {
191 4131 YADIFContext *s = ctx->priv;
192 4131 ThreadData *td = arg;
193 4131 int refs = s->cur->linesize[td->plane];
194 4131 int df = (s->csp->comp[td->plane].depth + 7) / 8;
195 4131 int pix_3 = 3 * df;
196 4131 int slice_start = (td->h * jobnr ) / nb_jobs;
197 4131 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
198 int y;
199 4131 int edge = 3 + MAX_ALIGN / df - 1;
200
201 /* filtering reads 3 pixels to the left/right; to avoid invalid reads,
202 * we need to call the c variant which avoids this for border pixels
203 */
204
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 180387 for (y = slice_start; y < slice_end; y++) {
205
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 176256 if ((y ^ td->parity) & 1) {
206 88128 uint8_t *prev = &s->prev->data[td->plane][y * refs];
207 88128 uint8_t *cur = &s->cur ->data[td->plane][y * refs];
208 88128 uint8_t *next = &s->next->data[td->plane][y * refs];
209 88128 uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
210
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 88128 int mode = y == 1 || y + 2 == td->h ? 2 : s->mode;
211 176256 s->filter_line(dst + pix_3, prev + pix_3, cur + pix_3,
212 88128 next + pix_3, td->w - edge,
213
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 88128 y + 1 < td->h ? refs : -refs,
214 y ? -refs : refs,
215
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 88128 td->parity ^ td->tff, mode);
216 176256 s->filter_edges(dst, prev, cur, next, td->w,
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 88128 y + 1 < td->h ? refs : -refs,
218 y ? -refs : refs,
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 88128 td->parity ^ td->tff, mode);
220 } else {
221 88128 memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
222 88128 &s->cur->data[td->plane][y * refs], td->w * df);
223 }
224 }
225 4131 return 0;
226 }
227
228 153 static void filter(AVFilterContext *ctx, AVFrame *dstpic,
229 int parity, int tff)
230 {
231 153 YADIFContext *yadif = ctx->priv;
232 153 ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
233 int i;
234
235
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 612 for (i = 0; i < yadif->csp->nb_components; i++) {
236 459 int w = dstpic->width;
237 459 int h = dstpic->height;
238
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 459 if (i == 1 || i == 2) {
240 306 w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
241 306 h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
242 }
243
244
245 459 td.w = w;
246 459 td.h = h;
247 459 td.plane = i;
248
249 459 ff_filter_execute(ctx, filter_slice, &td, NULL,
250
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 459 FFMIN(h, ff_filter_get_nb_threads(ctx)));
251 }
252 153 }
253
254 static const enum AVPixelFormat pix_fmts[] = {
255 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
256 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV440P,
257 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
258 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
259 AV_PIX_FMT_YUVJ440P,
260 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
261 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
262 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
263 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
264 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
265 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
266 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
267 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
268 AV_PIX_FMT_GBRAP,
269 AV_PIX_FMT_NONE
270 };
271
272 4 static int config_output(AVFilterLink *outlink)
273 {
274 4 AVFilterContext *ctx = outlink->src;
275 4 YADIFContext *s = ctx->priv;
276 int ret;
277
278 4 ret = ff_yadif_config_output_common(outlink);
279
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 4 if (ret < 0)
280 ✗ return ret;
281
282 4 s->csp = av_pix_fmt_desc_get(outlink->format);
283 4 s->filter = filter;
284
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 4 if (s->csp->comp[0].depth > 8) {
285 2 s->filter_line = filter_line_c_16bit;
286 2 s->filter_edges = filter_edges_16bit;
287 } else {
288 2 s->filter_line = filter_line_c;
289 2 s->filter_edges = filter_edges;
290 }
291
292 #if ARCH_X86
293 4 ff_yadif_init_x86(s);
294 #endif
295
296 4 return 0;
297 }
298
299
300 static const AVClass yadif_class = {
301 .class_name = "yadif",
302 .item_name = av_default_item_name,
303 .option = ff_yadif_options,
304 .version = LIBAVUTIL_VERSION_INT,
305 .category = AV_CLASS_CATEGORY_FILTER,
306 };
307
308 static const AVFilterPad avfilter_vf_yadif_inputs[] = {
309 {
310 .name = "default",
311 .type = AVMEDIA_TYPE_VIDEO,
312 .filter_frame = ff_yadif_filter_frame,
313 },
314 };
315
316 static const AVFilterPad avfilter_vf_yadif_outputs[] = {
317 {
318 .name = "default",
319 .type = AVMEDIA_TYPE_VIDEO,
320 .request_frame = ff_yadif_request_frame,
321 .config_props = config_output,
322 },
323 };
324
325 const FFFilter ff_vf_yadif = {
326 .p.name = "yadif",
327 .p.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
328 .p.priv_class = &yadif_class,
329 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
330 .priv_size = sizeof(YADIFContext),
331 .uninit = ff_yadif_uninit,
332 FILTER_INPUTS(avfilter_vf_yadif_inputs),
333 FILTER_OUTPUTS(avfilter_vf_yadif_outputs),
334 FILTER_PIXFMTS_ARRAY(pix_fmts),
335 };
336