2 * Copyright (C) 2006-2011 Michael Niedermayer <michaelni@gmx.at>
3 * 2010 James Darnley <james.darnley@gmail.com>
5 * FFmpeg is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * FFmpeg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include "libavutil/avassert.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/common.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
31 typedef struct ThreadData {
40 { int score = FFABS(cur[mrefs - 1 + (j)] - cur[prefs - 1 - (j)])\
41 + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
42 + FFABS(cur[mrefs + 1 + (j)] - cur[prefs + 1 - (j)]);\
43 if (score < spatial_score) {\
44 spatial_score= score;\
45 spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
47 /* The is_not_edge argument here controls when the code will enter a branch
48 * which reads up to and including x-3 and x+3. */
50 #define FILTER(start, end, is_not_edge) \
51 for (x = start; x < end; x++) { \
53 int d = (prev2[0] + next2[0])>>1; \
55 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
56 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
57 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
58 int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
59 int spatial_pred = (c+e) >> 1; \
62 int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \
63 + FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \
64 CHECK(-1) CHECK(-2) }} }} \
65 CHECK( 1) CHECK( 2) }} }} \
69 int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \
70 int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \
71 int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \
72 int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \
74 diff = FFMAX3(diff, min, -max); \
77 if (spatial_pred > d + diff) \
78 spatial_pred = d + diff; \
79 else if (spatial_pred < d - diff) \
80 spatial_pred = d - diff; \
82 dst[0] = spatial_pred; \
92 static void filter_line_c(void *dst1,
93 void *prev1, void *cur1, void *next1,
94 int w, int prefs, int mrefs, int parity, int mode)
97 uint8_t *prev = prev1;
99 uint8_t *next = next1;
101 uint8_t *prev2 = parity ? prev : cur ;
102 uint8_t *next2 = parity ? cur : next;
104 /* The function is called with the pointers already pointing to data[3] and
105 * with 6 subtracted from the width. This allows the FILTER macro to be
106 * called so that it processes all the pixels normally. A constant value of
107 * true for is_not_edge lets the compiler ignore the if statement. */
112 static void filter_edges(void *dst1, void *prev1, void *cur1, void *next1,
113 int w, int prefs, int mrefs, int parity, int mode)
116 uint8_t *prev = prev1;
118 uint8_t *next = next1;
120 uint8_t *prev2 = parity ? prev : cur ;
121 uint8_t *next2 = parity ? cur : next;
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. */
127 dst = (uint8_t*)dst1 + w - (MAX_ALIGN-1);
128 prev = (uint8_t*)prev1 + w - (MAX_ALIGN-1);
129 cur = (uint8_t*)cur1 + w - (MAX_ALIGN-1);
130 next = (uint8_t*)next1 + w - (MAX_ALIGN-1);
131 prev2 = (uint8_t*)(parity ? prev : cur);
132 next2 = (uint8_t*)(parity ? cur : next);
134 FILTER(w - (MAX_ALIGN-1), w - 3, 1)
139 static void filter_line_c_16bit(void *dst1,
140 void *prev1, void *cur1, void *next1,
141 int w, int prefs, int mrefs, int parity,
144 uint16_t *dst = dst1;
145 uint16_t *prev = prev1;
146 uint16_t *cur = cur1;
147 uint16_t *next = next1;
149 uint16_t *prev2 = parity ? prev : cur ;
150 uint16_t *next2 = parity ? cur : next;
157 static void filter_edges_16bit(void *dst1, void *prev1, void *cur1, void *next1,
158 int w, int prefs, int mrefs, int parity, int mode)
160 uint16_t *dst = dst1;
161 uint16_t *prev = prev1;
162 uint16_t *cur = cur1;
163 uint16_t *next = next1;
165 uint16_t *prev2 = parity ? prev : cur ;
166 uint16_t *next2 = parity ? cur : next;
172 dst = (uint16_t*)dst1 + w - (MAX_ALIGN/2-1);
173 prev = (uint16_t*)prev1 + w - (MAX_ALIGN/2-1);
174 cur = (uint16_t*)cur1 + w - (MAX_ALIGN/2-1);
175 next = (uint16_t*)next1 + w - (MAX_ALIGN/2-1);
176 prev2 = (uint16_t*)(parity ? prev : cur);
177 next2 = (uint16_t*)(parity ? cur : next);
179 FILTER(w - (MAX_ALIGN/2-1), w - 3, 1)
183 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
185 YADIFContext *s = ctx->priv;
186 ThreadData *td = arg;
187 int refs = s->cur->linesize[td->plane];
188 int df = (s->csp->comp[td->plane].depth_minus1 + 8) / 8;
190 int slice_start = (td->h * jobnr ) / nb_jobs;
191 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
194 /* filtering reads 3 pixels to the left/right; to avoid invalid reads,
195 * we need to call the c variant which avoids this for border pixels
197 for (y = slice_start; y < slice_end; y++) {
198 if ((y ^ td->parity) & 1) {
199 uint8_t *prev = &s->prev->data[td->plane][y * refs];
200 uint8_t *cur = &s->cur ->data[td->plane][y * refs];
201 uint8_t *next = &s->next->data[td->plane][y * refs];
202 uint8_t *dst = &td->frame->data[td->plane][y * td->frame->linesize[td->plane]];
203 int mode = y == 1 || y + 2 == td->h ? 2 : s->mode;
204 s->filter_line(dst + pix_3, prev + pix_3, cur + pix_3,
205 next + pix_3, td->w - (3 + MAX_ALIGN/df-1),
206 y + 1 < td->h ? refs : -refs,
208 td->parity ^ td->tff, mode);
209 s->filter_edges(dst, prev, cur, next, td->w,
210 y + 1 < td->h ? refs : -refs,
212 td->parity ^ td->tff, mode);
214 memcpy(&td->frame->data[td->plane][y * td->frame->linesize[td->plane]],
215 &s->cur->data[td->plane][y * refs], td->w * df);
221 static void filter(AVFilterContext *ctx, AVFrame *dstpic,
224 YADIFContext *yadif = ctx->priv;
225 ThreadData td = { .frame = dstpic, .parity = parity, .tff = tff };
228 for (i = 0; i < yadif->csp->nb_components; i++) {
229 int w = dstpic->width;
230 int h = dstpic->height;
232 if (i == 1 || i == 2) {
233 w = FF_CEIL_RSHIFT(w, yadif->csp->log2_chroma_w);
234 h = FF_CEIL_RSHIFT(h, yadif->csp->log2_chroma_h);
242 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(h, ctx->graph->nb_threads));
248 static int return_frame(AVFilterContext *ctx, int is_second)
250 YADIFContext *yadif = ctx->priv;
251 AVFilterLink *link = ctx->outputs[0];
254 if (yadif->parity == -1) {
255 tff = yadif->cur->interlaced_frame ?
256 yadif->cur->top_field_first : 1;
258 tff = yadif->parity ^ 1;
262 yadif->out = ff_get_video_buffer(link, link->w, link->h);
264 return AVERROR(ENOMEM);
266 av_frame_copy_props(yadif->out, yadif->cur);
267 yadif->out->interlaced_frame = 0;
270 filter(ctx, yadif->out, tff ^ !is_second, tff);
273 int64_t cur_pts = yadif->cur->pts;
274 int64_t next_pts = yadif->next->pts;
276 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
277 yadif->out->pts = cur_pts + next_pts;
279 yadif->out->pts = AV_NOPTS_VALUE;
282 ret = ff_filter_frame(ctx->outputs[0], yadif->out);
284 yadif->frame_pending = (yadif->mode&1) && !is_second;
288 static int filter_frame(AVFilterLink *link, AVFrame *frame)
290 AVFilterContext *ctx = link->dst;
291 YADIFContext *yadif = ctx->priv;
295 if (yadif->frame_pending)
296 return_frame(ctx, 1);
299 av_frame_free(&yadif->prev);
300 yadif->prev = yadif->cur;
301 yadif->cur = yadif->next;
307 if ((yadif->deint && !yadif->cur->interlaced_frame) || ctx->is_disabled) {
308 yadif->out = av_frame_clone(yadif->cur);
310 return AVERROR(ENOMEM);
312 av_frame_free(&yadif->prev);
313 if (yadif->out->pts != AV_NOPTS_VALUE)
314 yadif->out->pts *= 2;
315 return ff_filter_frame(ctx->outputs[0], yadif->out);
319 !(yadif->prev = av_frame_clone(yadif->cur)))
320 return AVERROR(ENOMEM);
322 yadif->out = ff_get_video_buffer(ctx->outputs[0], link->w, link->h);
324 return AVERROR(ENOMEM);
326 av_frame_copy_props(yadif->out, yadif->cur);
327 yadif->out->interlaced_frame = 0;
329 if (yadif->out->pts != AV_NOPTS_VALUE)
330 yadif->out->pts *= 2;
332 return return_frame(ctx, 0);
335 static int request_frame(AVFilterLink *link)
337 AVFilterContext *ctx = link->src;
338 YADIFContext *yadif = ctx->priv;
340 if (yadif->frame_pending) {
341 return_frame(ctx, 1);
351 ret = ff_request_frame(link->src->inputs[0]);
353 if (ret == AVERROR_EOF && yadif->cur) {
354 AVFrame *next = av_frame_clone(yadif->next);
357 return AVERROR(ENOMEM);
359 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
361 filter_frame(link->src->inputs[0], next);
363 } else if (ret < 0) {
366 } while (!yadif->cur);
371 static av_cold void uninit(AVFilterContext *ctx)
373 YADIFContext *yadif = ctx->priv;
375 av_frame_free(&yadif->prev);
376 av_frame_free(&yadif->cur );
377 av_frame_free(&yadif->next);
380 static int query_formats(AVFilterContext *ctx)
382 static const enum AVPixelFormat pix_fmts[] = {
392 AV_NE( AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE ),
395 AV_NE( AV_PIX_FMT_YUV420P9BE, AV_PIX_FMT_YUV420P9LE ),
396 AV_NE( AV_PIX_FMT_YUV422P9BE, AV_PIX_FMT_YUV422P9LE ),
397 AV_NE( AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUV444P9LE ),
398 AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ),
399 AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ),
400 AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ),
401 AV_NE( AV_PIX_FMT_YUV420P12BE, AV_PIX_FMT_YUV420P12LE ),
402 AV_NE( AV_PIX_FMT_YUV422P12BE, AV_PIX_FMT_YUV422P12LE ),
403 AV_NE( AV_PIX_FMT_YUV444P12BE, AV_PIX_FMT_YUV444P12LE ),
404 AV_NE( AV_PIX_FMT_YUV420P14BE, AV_PIX_FMT_YUV420P14LE ),
405 AV_NE( AV_PIX_FMT_YUV422P14BE, AV_PIX_FMT_YUV422P14LE ),
406 AV_NE( AV_PIX_FMT_YUV444P14BE, AV_PIX_FMT_YUV444P14LE ),
407 AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ),
408 AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ),
409 AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ),
416 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
421 static int config_props(AVFilterLink *link)
423 AVFilterContext *ctx = link->src;
424 YADIFContext *s = link->src->priv;
426 link->time_base.num = link->src->inputs[0]->time_base.num;
427 link->time_base.den = link->src->inputs[0]->time_base.den * 2;
428 link->w = link->src->inputs[0]->w;
429 link->h = link->src->inputs[0]->h;
432 link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1});
434 if (link->w < 3 || link->h < 3) {
435 av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
436 return AVERROR(EINVAL);
439 s->csp = av_pix_fmt_desc_get(link->format);
440 if (s->csp->comp[0].depth_minus1 / 8 == 1) {
441 s->filter_line = filter_line_c_16bit;
442 s->filter_edges = filter_edges_16bit;
444 s->filter_line = filter_line_c;
445 s->filter_edges = filter_edges;
449 ff_yadif_init_x86(s);
455 #define OFFSET(x) offsetof(YADIFContext, x)
456 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
458 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
460 static const AVOption yadif_options[] = {
461 { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"},
462 CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
463 CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
464 CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"),
465 CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"),
467 { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
468 CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
469 CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
470 CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
472 { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
473 CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
474 CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
479 AVFILTER_DEFINE_CLASS(yadif);
481 static const AVFilterPad avfilter_vf_yadif_inputs[] = {
484 .type = AVMEDIA_TYPE_VIDEO,
485 .filter_frame = filter_frame,
490 static const AVFilterPad avfilter_vf_yadif_outputs[] = {
493 .type = AVMEDIA_TYPE_VIDEO,
494 .request_frame = request_frame,
495 .config_props = config_props,
500 AVFilter avfilter_vf_yadif = {
502 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
504 .priv_size = sizeof(YADIFContext),
505 .priv_class = &yadif_class,
507 .query_formats = query_formats,
509 .inputs = avfilter_vf_yadif_inputs,
510 .outputs = avfilter_vf_yadif_outputs,
511 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,