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"
34 #define PERM_RWP AV_PERM_WRITE | AV_PERM_PRESERVE | AV_PERM_REUSE
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;\
45 for (x = 0; x < w; x++) { \
47 int d = (prev2[0] + next2[0])>>1; \
49 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
50 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
51 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
52 int diff = FFMAX3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2); \
53 int spatial_pred = (c+e) >> 1; \
54 int spatial_score = FFABS(cur[mrefs - 1] - cur[prefs - 1]) + FFABS(c-e) \
55 + FFABS(cur[mrefs + 1] - cur[prefs + 1]) - 1; \
57 CHECK(-1) CHECK(-2) }} }} \
58 CHECK( 1) CHECK( 2) }} }} \
61 int b = (prev2[2 * mrefs] + next2[2 * mrefs])>>1; \
62 int f = (prev2[2 * prefs] + next2[2 * prefs])>>1; \
63 int max = FFMAX3(d - e, d - c, FFMIN(b - c, f - e)); \
64 int min = FFMIN3(d - e, d - c, FFMAX(b - c, f - e)); \
66 diff = FFMAX3(diff, min, -max); \
69 if (spatial_pred > d + diff) \
70 spatial_pred = d + diff; \
71 else if (spatial_pred < d - diff) \
72 spatial_pred = d - diff; \
74 dst[0] = spatial_pred; \
84 static void filter_line_c(uint8_t *dst,
85 uint8_t *prev, uint8_t *cur, uint8_t *next,
86 int w, int prefs, int mrefs, int parity, int mode)
89 uint8_t *prev2 = parity ? prev : cur ;
90 uint8_t *next2 = parity ? cur : next;
95 static void filter_line_c_16bit(uint16_t *dst,
96 uint16_t *prev, uint16_t *cur, uint16_t *next,
97 int w, int prefs, int mrefs, int parity,
101 uint16_t *prev2 = parity ? prev : cur ;
102 uint16_t *next2 = parity ? cur : next;
109 static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
112 YADIFContext *yadif = ctx->priv;
115 for (i = 0; i < yadif->csp->nb_components; i++) {
116 int w = dstpic->video->w;
117 int h = dstpic->video->h;
118 int refs = yadif->cur->linesize[i];
119 int absrefs = FFABS(refs);
120 int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8;
122 if (i == 1 || i == 2) {
123 /* Why is this not part of the per-plane description thing? */
124 w >>= yadif->csp->log2_chroma_w;
125 h >>= yadif->csp->log2_chroma_h;
128 if(yadif->temp_line_size < absrefs) {
129 av_free(yadif->temp_line);
130 yadif->temp_line = av_mallocz(2*64 + 5*absrefs);
131 yadif->temp_line_size = absrefs;
134 for (y = 0; y < h; y++) {
135 if ((y ^ parity) & 1) {
136 uint8_t *prev = &yadif->prev->data[i][y * refs];
137 uint8_t *cur = &yadif->cur ->data[i][y * refs];
138 uint8_t *next = &yadif->next->data[i][y * refs];
139 uint8_t *dst = &dstpic->data[i][y * dstpic->linesize[i]];
140 int mode = y == 1 || y + 2 == h ? 2 : yadif->mode;
141 int prefs = y+1<h ? refs : -refs;
142 int mrefs = y ?-refs : refs;
145 uint8_t *tmp = yadif->temp_line + 64 + 2*absrefs;
147 memcpy(tmp+2*mrefs, cur+2*mrefs, w*df);
148 memcpy(tmp+mrefs, cur+mrefs, w*df);
149 memcpy(tmp , cur , w*df);
151 memcpy(tmp+prefs, cur+prefs, w*df);
153 memcpy(tmp+2*prefs, cur+2*prefs, w*df);
158 yadif->filter_line(dst, prev, cur, next, w,
162 memcpy(&dstpic->data[i][y * dstpic->linesize[i]],
163 &yadif->cur->data[i][y * refs], w * df);
171 static int return_frame(AVFilterContext *ctx, int is_second)
173 YADIFContext *yadif = ctx->priv;
174 AVFilterLink *link = ctx->outputs[0];
177 if (yadif->parity == -1) {
178 tff = yadif->cur->video->interlaced ?
179 yadif->cur->video->top_field_first : 1;
181 tff = yadif->parity ^ 1;
185 yadif->out = ff_get_video_buffer(link, PERM_RWP, link->w, link->h);
187 return AVERROR(ENOMEM);
189 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
190 yadif->out->video->interlaced = 0;
194 yadif->csp = av_pix_fmt_desc_get(link->format);
195 if (yadif->csp->comp[0].depth_minus1 / 8 == 1)
196 yadif->filter_line = (void*)filter_line_c_16bit;
198 filter(ctx, yadif->out, tff ^ !is_second, tff);
201 int64_t cur_pts = yadif->cur->pts;
202 int64_t next_pts = yadif->next->pts;
204 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
205 yadif->out->pts = cur_pts + next_pts;
207 yadif->out->pts = AV_NOPTS_VALUE;
210 ret = ff_filter_frame(ctx->outputs[0], yadif->out);
212 yadif->frame_pending = (yadif->mode&1) && !is_second;
216 static int filter_frame(AVFilterLink *link, AVFilterBufferRef *picref)
218 AVFilterContext *ctx = link->dst;
219 YADIFContext *yadif = ctx->priv;
223 if (yadif->frame_pending)
224 return_frame(ctx, 1);
227 avfilter_unref_buffer(yadif->prev);
228 yadif->prev = yadif->cur;
229 yadif->cur = yadif->next;
230 yadif->next = picref;
235 if (yadif->deint && !yadif->cur->video->interlaced) {
236 yadif->out = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE);
238 return AVERROR(ENOMEM);
240 avfilter_unref_bufferp(&yadif->prev);
241 if (yadif->out->pts != AV_NOPTS_VALUE)
242 yadif->out->pts *= 2;
243 return ff_filter_frame(ctx->outputs[0], yadif->out);
247 !(yadif->prev = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE)))
248 return AVERROR(ENOMEM);
250 yadif->out = ff_get_video_buffer(ctx->outputs[0], PERM_RWP,
253 return AVERROR(ENOMEM);
255 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
256 yadif->out->video->interlaced = 0;
258 if (yadif->out->pts != AV_NOPTS_VALUE)
259 yadif->out->pts *= 2;
261 return return_frame(ctx, 0);
264 static int request_frame(AVFilterLink *link)
266 AVFilterContext *ctx = link->src;
267 YADIFContext *yadif = ctx->priv;
269 if (yadif->frame_pending) {
270 return_frame(ctx, 1);
280 ret = ff_request_frame(link->src->inputs[0]);
282 if (ret == AVERROR_EOF && yadif->cur) {
283 AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, ~AV_PERM_WRITE);
286 return AVERROR(ENOMEM);
288 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
290 filter_frame(link->src->inputs[0], next);
292 } else if (ret < 0) {
295 } while (!yadif->cur);
300 #define OFFSET(x) offsetof(YADIFContext, x)
301 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
303 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
305 static const AVOption yadif_options[] = {
306 { "mode", "specify the interlacing mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"},
307 CONST("send_frame", "send one frame for each frame", YADIF_MODE_SEND_FRAME, "mode"),
308 CONST("send_field", "send one frame for each field", YADIF_MODE_SEND_FIELD, "mode"),
309 CONST("send_frame_nospatial", "send one frame for each frame, but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL, "mode"),
310 CONST("send_field_nospatial", "send one frame for each field, but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL, "mode"),
312 { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1, FLAGS, "parity" },
313 CONST("tff", "assume top field first", YADIF_PARITY_TFF, "parity"),
314 CONST("bff", "assume bottom field first", YADIF_PARITY_BFF, "parity"),
315 CONST("auto", "auto detect parity", YADIF_PARITY_AUTO, "parity"),
317 { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
318 CONST("all", "deinterlace all frames", YADIF_DEINT_ALL, "deint"),
319 CONST("interlaced", "only deinterlace frames marked as interlaced", YADIF_DEINT_INTERLACED, "deint"),
324 AVFILTER_DEFINE_CLASS(yadif);
326 static av_cold void uninit(AVFilterContext *ctx)
328 YADIFContext *yadif = ctx->priv;
330 avfilter_unref_bufferp(&yadif->prev);
331 avfilter_unref_bufferp(&yadif->cur );
332 avfilter_unref_bufferp(&yadif->next);
333 av_freep(&yadif->temp_line); yadif->temp_line_size = 0;
337 static int query_formats(AVFilterContext *ctx)
339 static const enum AVPixelFormat pix_fmts[] = {
349 AV_NE( AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE ),
352 AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ),
353 AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ),
354 AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ),
355 AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ),
356 AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ),
357 AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ),
364 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
369 static av_cold int init(AVFilterContext *ctx, const char *args)
371 YADIFContext *yadif = ctx->priv;
372 static const char *shorthand[] = { "mode", "parity", "enable", NULL };
377 yadif->class = &yadif_class;
378 av_opt_set_defaults(yadif);
380 if ((ret = av_opt_set_from_string(yadif, args, shorthand, "=", ":")) < 0)
383 yadif->filter_line = filter_line_c;
386 ff_yadif_init_x86(yadif);
388 av_log(ctx, AV_LOG_VERBOSE, "mode:%d parity:%d deint:%d\n",
389 yadif->mode, yadif->parity, yadif->deint);
394 static int config_props(AVFilterLink *link)
396 AVFilterContext *ctx = link->src;
397 YADIFContext *yadif = ctx->priv;
399 link->time_base.num = link->src->inputs[0]->time_base.num;
400 link->time_base.den = link->src->inputs[0]->time_base.den * 2;
401 link->w = link->src->inputs[0]->w;
402 link->h = link->src->inputs[0]->h;
405 link->frame_rate = av_mul_q(link->src->inputs[0]->frame_rate, (AVRational){2,1});
407 if (link->w < 3 || link->h < 3) {
408 av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
409 return AVERROR(EINVAL);
415 static const AVFilterPad avfilter_vf_yadif_inputs[] = {
418 .type = AVMEDIA_TYPE_VIDEO,
419 .filter_frame = filter_frame,
420 .min_perms = AV_PERM_PRESERVE,
425 static const AVFilterPad avfilter_vf_yadif_outputs[] = {
428 .type = AVMEDIA_TYPE_VIDEO,
429 .request_frame = request_frame,
430 .config_props = config_props,
435 AVFilter avfilter_vf_yadif = {
437 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
439 .priv_size = sizeof(YADIFContext),
442 .query_formats = query_formats,
444 .inputs = avfilter_vf_yadif_inputs,
445 .outputs = avfilter_vf_yadif_outputs,
447 .priv_class = &yadif_class,