2 * Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
3 * 2010 James Darnley <james.darnley@gmail.com>
5 * This file is part of FFmpeg.
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.
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.
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
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"
34 typedef struct ThreadData {
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;\
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. */
53 #define FILTER(start, end, is_not_edge) \
54 for (x = start; x < end; x++) { \
56 int d = (prev2[0] + next2[0])>>1; \
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; \
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) }} }} \
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)); \
77 diff = FFMAX3(diff, min, -max); \
80 if (spatial_pred > d + diff) \
81 spatial_pred = d + diff; \
82 else if (spatial_pred < d - diff) \
83 spatial_pred = d - diff; \
85 dst[0] = spatial_pred; \
95 static void filter_line_c(void *dst1,
96 void *prev1, void *cur1, void *next1,
97 int w, int prefs, int mrefs, int parity, int mode)
100 uint8_t *prev = prev1;
102 uint8_t *next = next1;
104 uint8_t *prev2 = parity ? prev : cur ;
105 uint8_t *next2 = parity ? cur : next;
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. */
115 static void filter_edges(void *dst1, void *prev1, void *cur1, void *next1,
116 int w, int prefs, int mrefs, int parity, int mode)
119 uint8_t *prev = prev1;
121 uint8_t *next = next1;
123 uint8_t *prev2 = parity ? prev : cur ;
124 uint8_t *next2 = parity ? cur : next;
126 const int edge = MAX_ALIGN - 1;
128 /* Only edge pixels need to be processed here. A constant value of false
129 * for is_not_edge should let the compiler ignore the whole branch. */
132 dst = (uint8_t*)dst1 + w - edge;
133 prev = (uint8_t*)prev1 + w - edge;
134 cur = (uint8_t*)cur1 + w - edge;
135 next = (uint8_t*)next1 + w - edge;
136 prev2 = (uint8_t*)(parity ? prev : cur);
137 next2 = (uint8_t*)(parity ? cur : next);
139 FILTER(w - edge, w - 3, 1)
144 static void filter_line_c_16bit(void *dst1,
145 void *prev1, void *cur1, void *next1,
146 int w, int prefs, int mrefs, int parity,
149 uint16_t *dst = dst1;
150 uint16_t *prev = prev1;
151 uint16_t *cur = cur1;
152 uint16_t *next = next1;
154 uint16_t *prev2 = parity ? prev : cur ;
155 uint16_t *next2 = parity ? cur : next;
162 static void filter_edges_16bit(void *dst1, void *prev1, void *cur1, void *next1,
163 int w, int prefs, int mrefs, int parity, int mode)
165 uint16_t *dst = dst1;
166 uint16_t *prev = prev1;
167 uint16_t *cur = cur1;
168 uint16_t *next = next1;
170 uint16_t *prev2 = parity ? prev : cur ;
171 uint16_t *next2 = parity ? cur : next;
173 const int edge = MAX_ALIGN / 2 - 1;
180 dst = (uint16_t*)dst1 + w - edge;
181 prev = (uint16_t*)prev1 + w - edge;
182 cur = (uint16_t*)cur1 + w - edge;
183 next = (uint16_t*)next1 + w - edge;
184 prev2 = (uint16_t*)(parity ? prev : cur);
185 next2 = (uint16_t*)(parity ? cur : next);
187 FILTER(w - edge, w - 3, 1)
191 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
193 YADIFContext *s = ctx->priv;
194 ThreadData *td = arg;
195 int refs = s->cur->linesize[td->plane];
196 int df = (s->csp->comp[td->plane].depth + 7) / 8;
198 int slice_start = (td->h * jobnr ) / nb_jobs;
199 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
201 int edge = 3 + MAX_ALIGN / df - 1;
203 /* filtering reads 3 pixels to the left/right; to avoid invalid reads,
204 * we need to call the c variant which avoids this for border pixels
206 for (y = slice_start; y < slice_end; y++) {
207 if ((y ^ td->parity) & 1) {
208 uint8_t *prev = &s->prev->data[td->plane][y * refs];
209 uint8_t *cur = &s->cur ->data[td->plane][y * refs];
210 uint8_t *next = &s->next->data[td->plane][y * refs];
211 uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
212 int mode = y == 1 || y + 2 == td->h ? 2 : s->mode;
213 s->filter_line(dst + pix_3, prev + pix_3, cur + pix_3,
214 next + pix_3, td->w - edge,
215 y + 1 < td->h ? refs : -refs,
217 td->parity ^ td->tff, mode);
218 s->filter_edges(dst, prev, cur, next, td->w,
219 y + 1 < td->h ? refs : -refs,
221 td->parity ^ td->tff, mode);
223 memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
224 &s->cur->data[td->plane][y * refs], td->w * df);
230 static void filter(AVFilterContext *ctx, AVFrame *dstpic,
233 YADIFContext *yadif = ctx->priv;
234 ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
237 for (i = 0; i < yadif->csp->nb_components; i++) {
238 int w = dstpic->width;
239 int h = dstpic->height;
241 if (i == 1 || i == 2) {
242 w = AV_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
243 h = AV_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
251 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(h, ff_filter_get_nb_threads(ctx)));
257 static int return_frame(AVFilterContext *ctx, int is_second)
259 YADIFContext *yadif = ctx->priv;
260 AVFilterLink *link = ctx->outputs[0];
263 if (yadif->parity == -1) {
264 tff = yadif->cur->interlaced_frame ?
265 yadif->cur->top_field_first : 1;
267 tff = yadif->parity ^ 1;
271 yadif->out = ff_get_video_buffer(link, link->w, link->h);
273 return AVERROR(ENOMEM);
275 av_frame_copy_props(yadif->out, yadif->cur);
276 yadif->out->interlaced_frame = 0;
279 filter(ctx, yadif->out, tff ^ !is_second, tff);
282 int64_t cur_pts = yadif->cur->pts;
283 int64_t next_pts = yadif->next->pts;
285 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
286 yadif->out->pts = cur_pts + next_pts;
288 yadif->out->pts = AV_NOPTS_VALUE;
291 ret = ff_filter_frame(ctx->outputs[0], yadif->out);
293 yadif->frame_pending = (yadif->mode&1) && !is_second;
297 static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b)
300 for (i = 0; i < yadif->csp->nb_components; i++)
301 if (a->linesize[i] != b->linesize[i])
306 static void fixstride(AVFilterLink *link, AVFrame *f)
308 AVFrame *dst = ff_default_get_video_buffer(link, f->width, f->height);
311 av_frame_copy_props(dst, f);
312 av_image_copy(dst->data, dst->linesize,
313 (const uint8_t **)f->data, f->linesize,
314 dst->format, dst->width, dst->height);
316 av_frame_move_ref(f, dst);
320 static int filter_frame(AVFilterLink *link, AVFrame *frame)
322 AVFilterContext *ctx = link->dst;
323 YADIFContext *yadif = ctx->priv;
327 if (yadif->frame_pending)
328 return_frame(ctx, 1);
331 av_frame_free(&yadif->prev);
332 yadif->prev = yadif->cur;
333 yadif->cur = yadif->next;
337 !(yadif->cur = av_frame_clone(yadif->next)))
338 return AVERROR(ENOMEM);
340 if (checkstride(yadif, yadif->next, yadif->cur)) {
341 av_log(ctx, AV_LOG_VERBOSE, "Reallocating frame due to differing stride\n");
342 fixstride(link, yadif->next);
344 if (checkstride(yadif, yadif->next, yadif->cur))
345 fixstride(link, yadif->cur);
346 if (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))
347 fixstride(link, yadif->prev);
348 if (checkstride(yadif, yadif->next, yadif->cur) || (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))) {
349 av_log(ctx, AV_LOG_ERROR, "Failed to reallocate frame\n");
356 if ((yadif->deint && !yadif->cur->interlaced_frame) ||
358 (yadif->deint && !yadif->prev->interlaced_frame && yadif->prev->repeat_pict) ||
359 (yadif->deint && !yadif->next->interlaced_frame && yadif->next->repeat_pict)
361 yadif->out = av_frame_clone(yadif->cur);
363 return AVERROR(ENOMEM);
365 av_frame_free(&yadif->prev);
366 if (yadif->out->pts != AV_NOPTS_VALUE)
367 yadif->out->pts *= 2;
368 return ff_filter_frame(ctx->outputs[0], yadif->out);
371 yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h);
373 return AVERROR(ENOMEM);
375 av_frame_copy_props(yadif->out, yadif->cur);
376 yadif->out->interlaced_frame = 0;
378 if (yadif->out->pts != AV_NOPTS_VALUE)
379 yadif->out->pts *= 2;
381 return return_frame(ctx, 0);
384 static int request_frame(AVFilterLink *link)
386 AVFilterContext *ctx = link->src;
387 YADIFContext *yadif = ctx->priv;
390 if (yadif->frame_pending) {
391 return_frame(ctx, 1);
398 ret = ff_request_frame(ctx->inputs[0]);
400 if (ret == AVERROR_EOF && yadif->cur) {
401 AVFrame *next = av_frame_clone(yadif->next);
404 return AVERROR(ENOMEM);
406 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
408 filter_frame(ctx->inputs[0], next);
410 } else if (ret < 0) {
417 static av_cold void uninit(AVFilterContext *ctx)
419 YADIFContext *yadif = ctx->priv;
421 av_frame_free(&yadif->prev);
422 av_frame_free(&yadif->cur );
423 av_frame_free(&yadif->next);
426 static int query_formats(AVFilterContext *ctx)
428 static const enum AVPixelFormat pix_fmts[] = {
444 AV_PIX_FMT_YUV420P10,
445 AV_PIX_FMT_YUV422P10,
446 AV_PIX_FMT_YUV444P10,
447 AV_PIX_FMT_YUV420P12,
448 AV_PIX_FMT_YUV422P12,
449 AV_PIX_FMT_YUV444P12,
450 AV_PIX_FMT_YUV420P14,
451 AV_PIX_FMT_YUV422P14,
452 AV_PIX_FMT_YUV444P14,
453 AV_PIX_FMT_YUV420P16,
454 AV_PIX_FMT_YUV422P16,
455 AV_PIX_FMT_YUV444P16,
469 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
471 return AVERROR(ENOMEM);
472 return ff_set_common_formats(ctx, fmts_list);
475 static int config_props(AVFilterLink *link)
477 AVFilterContext *ctx = link->src;
478 YADIFContext *s = ctx->priv;
480 link->time_base.num = ctx->inputs[0]->time_base.num;
481 link->time_base.den = ctx->inputs[0]->time_base.den * 2;
482 link->w = ctx->inputs[0]->w;
483 link->h = ctx->inputs[0]->h;
486 link->frame_rate = av_mul_q(ctx->inputs[0]->frame_rate,
489 if (link->w < 3 || link->h < 3) {
490 av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
491 return AVERROR(EINVAL);
494 s->csp = av_pix_fmt_desc_get(link->format);
495 if (s->csp->comp[0].depth > 8) {
496 s->filter_line = filter_line_c_16bit;
497 s->filter_edges = filter_edges_16bit;
499 s->filter_line = filter_line_c;
500 s->filter_edges = filter_edges;
504 ff_yadif_init_x86(s);
510 #define OFFSET(x) offsetof(YADIFContext, x)
511 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
513 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
515 static const AVOption yadif_options[] = {
516 { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"},
517 CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
518 CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
519 CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"),
520 CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"),
522 { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
523 CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
524 CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
525 CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
527 { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
528 CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
529 CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
534 AVFILTER_DEFINE_CLASS(yadif);
536 static const AVFilterPad avfilter_vf_yadif_inputs[] = {
539 .type = AVMEDIA_TYPE_VIDEO,
540 .filter_frame = filter_frame,
545 static const AVFilterPad avfilter_vf_yadif_outputs[] = {
548 .type = AVMEDIA_TYPE_VIDEO,
549 .request_frame = request_frame,
550 .config_props = config_props,
555 AVFilter ff_vf_yadif = {
557 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
558 .priv_size = sizeof(YADIFContext),
559 .priv_class = &yadif_class,
561 .query_formats = query_formats,
562 .inputs = avfilter_vf_yadif_inputs,
563 .outputs = avfilter_vf_yadif_outputs,
564 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,