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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/avassert.h"
23#include "libavutil/cpu.h"
24#include "libavutil/common.h"
25#include "libavutil/opt.h"
26#include "libavutil/pixdesc.h"
27#include "libavutil/imgutils.h"
28#include "avfilter.h"
29#include "formats.h"
30#include "internal.h"
31#include "video.h"
32#include "yadif.h"
33
34typedef struct ThreadData {
35 AVFrame *frame;
36 int plane;
37 int w, h;
38 int parity;
39 int tff;
40} ThreadData;
41
42#define CHECK(j)\
43 { int score = FFABS(cur[mrefs - 1 + (j)] - cur[prefs - 1 - (j)])\
44 + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
45 + FFABS(cur[mrefs + 1 + (j)] - cur[prefs + 1 - (j)]);\
46 if (score < spatial_score) {\
47 spatial_score= score;\
48 spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
49
50/* The is_not_edge argument here controls when the code will enter a branch
51 * which reads up to and including x-3 and x+3. */
52
53#define FILTER(start, end, is_not_edge) \
54 for (x = start; x < end; x++) { \
55 int c = cur[mrefs]; \
56 int d = (prev2[0] + next2[0])>>1; \
57 int e = cur[prefs]; \
58 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
59 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
60 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
61 int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
62 int spatial_pred = (c+e) >> 1; \
63 \
64 if (is_not_edge) {\
65 int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \
66 + FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \
67 CHECK(-1) CHECK(-2) }} }} \
68 CHECK( 1) CHECK( 2) }} }} \
69 }\
70 \
71 if (!(mode&2)) { \
72 int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \
73 int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \
74 int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \
75 int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \
76 \
77 diff = FFMAX3(diff, min, -max); \
78 } \
79 \
80 if (spatial_pred > d + diff) \
81 spatial_pred = d + diff; \
82 else if (spatial_pred < d - diff) \
83 spatial_pred = d - diff; \
84 \
85 dst[0] = spatial_pred; \
86 \
87 dst++; \
88 cur++; \
89 prev++; \
90 next++; \
91 prev2++; \
92 next2++; \
93 }
94
95static void filter_line_c(void *dst1,
96 void *prev1, void *cur1, void *next1,
97 int w, int prefs, int mrefs, int parity, int mode)
98{
99 uint8_t *dst = dst1;
100 uint8_t *prev = prev1;
101 uint8_t *cur = cur1;
102 uint8_t *next = next1;
103 int x;
104 uint8_t *prev2 = parity ? prev : cur ;
105 uint8_t *next2 = parity ? cur : next;
106
107 /* The function is called with the pointers already pointing to data[3] and
108 * with 6 subtracted from the width. This allows the FILTER macro to be
109 * called so that it processes all the pixels normally. A constant value of
110 * true for is_not_edge lets the compiler ignore the if statement. */
111 FILTER(0, w, 1)
112}
113
114#define MAX_ALIGN 8
115static void filter_edges(void *dst1, void *prev1, void *cur1, void *next1,
116 int w, int prefs, int mrefs, int parity, int mode)
117{
118 uint8_t *dst = dst1;
119 uint8_t *prev = prev1;
120 uint8_t *cur = cur1;
121 uint8_t *next = next1;
122 int x;
123 uint8_t *prev2 = parity ? prev : cur ;
124 uint8_t *next2 = parity ? cur : next;
125
126 /* Only edge pixels need to be processed here. A constant value of false
127 * for is_not_edge should let the compiler ignore the whole branch. */
128 FILTER(0, 3, 0)
129
130 dst = (uint8_t*)dst1 + w - (MAX_ALIGN-1);
131 prev = (uint8_t*)prev1 + w - (MAX_ALIGN-1);
132 cur = (uint8_t*)cur1 + w - (MAX_ALIGN-1);
133 next = (uint8_t*)next1 + w - (MAX_ALIGN-1);
134 prev2 = (uint8_t*)(parity ? prev : cur);
135 next2 = (uint8_t*)(parity ? cur : next);
136
137 FILTER(w - (MAX_ALIGN-1), w - 3, 1)
138 FILTER(w - 3, w, 0)
139}
140
141
142static void filter_line_c_16bit(void *dst1,
143 void *prev1, void *cur1, void *next1,
144 int w, int prefs, int mrefs, int parity,
145 int mode)
146{
147 uint16_t *dst = dst1;
148 uint16_t *prev = prev1;
149 uint16_t *cur = cur1;
150 uint16_t *next = next1;
151 int x;
152 uint16_t *prev2 = parity ? prev : cur ;
153 uint16_t *next2 = parity ? cur : next;
154 mrefs /= 2;
155 prefs /= 2;
156
157 FILTER(0, w, 1)
158}
159
160static void filter_edges_16bit(void *dst1, void *prev1, void *cur1, void *next1,
161 int w, int prefs, int mrefs, int parity, int mode)
162{
163 uint16_t *dst = dst1;
164 uint16_t *prev = prev1;
165 uint16_t *cur = cur1;
166 uint16_t *next = next1;
167 int x;
168 uint16_t *prev2 = parity ? prev : cur ;
169 uint16_t *next2 = parity ? cur : next;
170 mrefs /= 2;
171 prefs /= 2;
172
173 FILTER(0, 3, 0)
174
175 dst = (uint16_t*)dst1 + w - (MAX_ALIGN/2-1);
176 prev = (uint16_t*)prev1 + w - (MAX_ALIGN/2-1);
177 cur = (uint16_t*)cur1 + w - (MAX_ALIGN/2-1);
178 next = (uint16_t*)next1 + w - (MAX_ALIGN/2-1);
179 prev2 = (uint16_t*)(parity ? prev : cur);
180 next2 = (uint16_t*)(parity ? cur : next);
181
182 FILTER(w - (MAX_ALIGN/2-1), w - 3, 1)
183 FILTER(w - 3, w, 0)
184}
185
186static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
187{
188 YADIFContext *s = ctx->priv;
189 ThreadData *td = arg;
190 int refs = s->cur->linesize[td->plane];
191 int df = (s->csp->comp[td->plane].depth + 7) / 8;
192 int pix_3 = 3 * df;
193 int slice_start = (td->h * jobnr ) / nb_jobs;
194 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
195 int y;
196
197 /* filtering reads 3 pixels to the left/right; to avoid invalid reads,
198 * we need to call the c variant which avoids this for border pixels
199 */
200 for (y = slice_start; y < slice_end; y++) {
201 if ((y ^ td->parity) & 1) {
202 uint8_t *prev = &s->prev->data[td->plane][y * refs];
203 uint8_t *cur = &s->cur ->data[td->plane][y * refs];
204 uint8_t *next = &s->next->data[td->plane][y * refs];
205 uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
206 int mode = y == 1 || y + 2 == td->h ? 2 : s->mode;
207 s->filter_line(dst + pix_3, prev + pix_3, cur + pix_3,
208 next + pix_3, td->w - (3 + MAX_ALIGN/df-1),
209 y + 1 < td->h ? refs : -refs,
210 y ? -refs : refs,
211 td->parity ^ td->tff, mode);
212 s->filter_edges(dst, prev, cur, next, td->w,
213 y + 1 < td->h ? refs : -refs,
214 y ? -refs : refs,
215 td->parity ^ td->tff, mode);
216 } else {
217 memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
218 &s->cur->data[td->plane][y * refs], td->w * df);
219 }
220 }
221 return 0;
222}
223
224static void filter(AVFilterContext *ctx, AVFrame *dstpic,
225 int parity, int tff)
226{
227 YADIFContext *yadif = ctx->priv;
228 ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
229 int i;
230
231 for (i = 0; i < yadif->csp->nb_components; i++) {
232 int w = dstpic->width;
233 int h = dstpic->height;
234
235 if (i == 1 || i == 2) {
236 w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
237 h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
238 }
239
240
241 td.w = w;
242 td.h = h;
243 td.plane = i;
244
245 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(h, ff_filter_get_nb_threads(ctx)));
246 }
247
248 emms_c();
249}
250
251static int return_frame(AVFilterContext *ctx, int is_second)
252{
253 YADIFContext *yadif = ctx->priv;
254 AVFilterLink *link = ctx->outputs[0];
255 int tff, ret;
256
257 if (yadif->parity == -1) {
258 tff = yadif->cur->interlaced_frame ?
259 yadif->cur->top_field_first : 1;
260 } else {
261 tff = yadif->parity ^ 1;
262 }
263
264 if (is_second) {
265 yadif->out = ff_get_video_buffer(link, link->w, link->h);
266 if (!yadif->out)
267 return AVERROR(ENOMEM);
268
269 av_frame_copy_props(yadif->out, yadif->cur);
270 yadif->out->interlaced_frame = 0;
271 }
272
273 filter(ctx, yadif->out, tff ^ !is_second, tff);
274
275 if (is_second) {
276 int64_t cur_pts = yadif->cur->pts;
277 int64_t next_pts = yadif->next->pts;
278
279 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
280 yadif->out->pts = cur_pts + next_pts;
281 } else {
282 yadif->out->pts = AV_NOPTS_VALUE;
283 }
284 }
285 ret = ff_filter_frame(ctx->outputs[0], yadif->out);
286
287 yadif->frame_pending = (yadif->mode&1) && !is_second;
288 return ret;
289}
290
291static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b)
292{
293 int i;
294 for (i = 0; i < yadif->csp->nb_components; i++)
295 if (a->linesize[i] != b->linesize[i])
296 return 1;
297 return 0;
298}
299
300static void fixstride(AVFilterLink *link, AVFrame *f)
301{
302 AVFrame *dst = ff_default_get_video_buffer(link, f->width, f->height);
303 if(!dst)
304 return;
305 av_frame_copy_props(dst, f);
306 av_image_copy(dst->data, dst->linesize,
307 (const uint8_t **)f->data, f->linesize,
308 dst->format, dst->width, dst->height);
309 av_frame_unref(f);
310 av_frame_move_ref(f, dst);
311 av_frame_free(&dst);
312}
313
314static int filter_frame(AVFilterLink *link, AVFrame *frame)
315{
316 AVFilterContext *ctx = link->dst;
317 YADIFContext *yadif = ctx->priv;
318
319 av_assert0(frame);
320
321 if (yadif->frame_pending)
322 return_frame(ctx, 1);
323
324 if (yadif->prev)
325 av_frame_free(&yadif->prev);
326 yadif->prev = yadif->cur;
327 yadif->cur = yadif->next;
328 yadif->next = frame;
329
330 if (!yadif->cur &&
331 !(yadif->cur = av_frame_clone(yadif->next)))
332 return AVERROR(ENOMEM);
333
334 if (checkstride(yadif, yadif->next, yadif->cur)) {
335 av_log(ctx, AV_LOG_VERBOSE, "Reallocating frame due to differing stride\n");
336 fixstride(link, yadif->next);
337 }
338 if (checkstride(yadif, yadif->next, yadif->cur))
339 fixstride(link, yadif->cur);
340 if (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))
341 fixstride(link, yadif->prev);
342 if (checkstride(yadif, yadif->next, yadif->cur) || (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))) {
343 av_log(ctx, AV_LOG_ERROR, "Failed to reallocate frame\n");
344 return -1;
345 }
346
347 if (!yadif->prev)
348 return 0;
349
350 if ((yadif->deint && !yadif->cur->interlaced_frame) ||
351 ctx->is_disabled ||
352 (yadif->deint && !yadif->prev->interlaced_frame && yadif->prev->repeat_pict) ||
353 (yadif->deint && !yadif->next->interlaced_frame && yadif->next->repeat_pict)
354 ) {
355 yadif->out = av_frame_clone(yadif->cur);
356 if (!yadif->out)
357 return AVERROR(ENOMEM);
358
359 av_frame_free(&yadif->prev);
360 if (yadif->out->pts != AV_NOPTS_VALUE)
361 yadif->out->pts *= 2;
362 return ff_filter_frame(ctx->outputs[0], yadif->out);
363 }
364
365 yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h);
366 if (!yadif->out)
367 return AVERROR(ENOMEM);
368
369 av_frame_copy_props(yadif->out, yadif->cur);
370 yadif->out->interlaced_frame = 0;
371
372 if (yadif->out->pts != AV_NOPTS_VALUE)
373 yadif->out->pts *= 2;
374
375 return return_frame(ctx, 0);
376}
377
378static int request_frame(AVFilterLink *link)
379{
380 AVFilterContext *ctx = link->src;
381 YADIFContext *yadif = ctx->priv;
382 int ret;
383
384 if (yadif->frame_pending) {
385 return_frame(ctx, 1);
386 return 0;
387 }
388
389 if (yadif->eof)
390 return AVERROR_EOF;
391
392 ret = ff_request_frame(ctx->inputs[0]);
393
394 if (ret == AVERROR_EOF && yadif->cur) {
395 AVFrame *next = av_frame_clone(yadif->next);
396
397 if (!next)
398 return AVERROR(ENOMEM);
399
400 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
401
402 filter_frame(ctx->inputs[0], next);
403 yadif->eof = 1;
404 } else if (ret < 0) {
405 return ret;
406 }
407
408 return 0;
409}
410
411static av_cold void uninit(AVFilterContext *ctx)
412{
413 YADIFContext *yadif = ctx->priv;
414
415 av_frame_free(&yadif->prev);
416 av_frame_free(&yadif->cur );
417 av_frame_free(&yadif->next);
418}
419
420static int query_formats(AVFilterContext *ctx)
421{
422 static const enum AVPixelFormat pix_fmts[] = {
423 AV_PIX_FMT_YUV420P,
424 AV_PIX_FMT_YUV422P,
425 AV_PIX_FMT_YUV444P,
426 AV_PIX_FMT_YUV410P,
427 AV_PIX_FMT_YUV411P,
428 AV_PIX_FMT_GRAY8,
429 AV_PIX_FMT_YUVJ420P,
430 AV_PIX_FMT_YUVJ422P,
431 AV_PIX_FMT_YUVJ444P,
432 AV_PIX_FMT_GRAY16,
433 AV_PIX_FMT_YUV440P,
434 AV_PIX_FMT_YUVJ440P,
435 AV_PIX_FMT_YUV420P9,
436 AV_PIX_FMT_YUV422P9,
437 AV_PIX_FMT_YUV444P9,
438 AV_PIX_FMT_YUV420P10,
439 AV_PIX_FMT_YUV422P10,
440 AV_PIX_FMT_YUV444P10,
441 AV_PIX_FMT_YUV420P12,
442 AV_PIX_FMT_YUV422P12,
443 AV_PIX_FMT_YUV444P12,
444 AV_PIX_FMT_YUV420P14,
445 AV_PIX_FMT_YUV422P14,
446 AV_PIX_FMT_YUV444P14,
447 AV_PIX_FMT_YUV420P16,
448 AV_PIX_FMT_YUV422P16,
449 AV_PIX_FMT_YUV444P16,
450 AV_PIX_FMT_YUVA420P,
451 AV_PIX_FMT_YUVA422P,
452 AV_PIX_FMT_YUVA444P,
453 AV_PIX_FMT_GBRP,
454 AV_PIX_FMT_GBRP9,
455 AV_PIX_FMT_GBRP10,
456 AV_PIX_FMT_GBRP12,
457 AV_PIX_FMT_GBRP14,
458 AV_PIX_FMT_GBRP16,
459 AV_PIX_FMT_GBRAP,
460 AV_PIX_FMT_NONE
461 };
462
463 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
464 if (!fmts_list)
465 return AVERROR(ENOMEM);
466 return ff_set_common_formats(ctx, fmts_list);
467}
468
469static int config_props(AVFilterLink *link)
470{
471 AVFilterContext *ctx = link->src;
472 YADIFContext *s = ctx->priv;
473
474 link->time_base.num = ctx->inputs[0]->time_base.num;
475 link->time_base.den = ctx->inputs[0]->time_base.den * 2;
476 link->w = ctx->inputs[0]->w;
477 link->h = ctx->inputs[0]->h;
478
479 if(s->mode & 1)
480 link->frame_rate = av_mul_q(ctx->inputs[0]->frame_rate,
481 (AVRational){2, 1});
482
483 if (link->w < 3 || link->h < 3) {
484 av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
485 return AVERROR(EINVAL);
486 }
487
488 s->csp = av_pix_fmt_desc_get(link->format);
489 if (s->csp->comp[0].depth > 8) {
490 s->filter_line = filter_line_c_16bit;
491 s->filter_edges = filter_edges_16bit;
492 } else {
493 s->filter_line = filter_line_c;
494 s->filter_edges = filter_edges;
495 }
496
497 if (ARCH_X86)
498 ff_yadif_init_x86(s);
499
500 return 0;
501}
502
503
504#define OFFSET(x) offsetof(YADIFContext, x)
505#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
506
507#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
508
509static const AVOption yadif_options[] = {
510 { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"},
511 CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
512 CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
513 CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"),
514 CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"),
515
516 { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
517 CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
518 CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
519 CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
520
521 { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
522 CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
523 CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
524
525 { NULL }
526};
527
528AVFILTER_DEFINE_CLASS(yadif);
529
530static const AVFilterPad avfilter_vf_yadif_inputs[] = {
531 {
532 .name = "default",
533 .type = AVMEDIA_TYPE_VIDEO,
534 .filter_frame = filter_frame,
535 },
536 { NULL }
537};
538
539static const AVFilterPad avfilter_vf_yadif_outputs[] = {
540 {
541 .name = "default",
542 .type = AVMEDIA_TYPE_VIDEO,
543 .request_frame = request_frame,
544 .config_props = config_props,
545 },
546 { NULL }
547};
548
549AVFilter ff_vf_yadif = {
550 .name = "yadif",
551 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
552 .priv_size = sizeof(YADIFContext),
553 .priv_class = &yadif_class,
554 .uninit = uninit,
555 .query_formats = query_formats,
556 .inputs = avfilter_vf_yadif_inputs,
557 .outputs = avfilter_vf_yadif_outputs,
558 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
559};
560
generated by cgit at 2024-05-17 05:04:57 (GMT)