2 * Copyright (C) 2006-2010 Michael Niedermayer <michaelni@gmx.at>
3 * 2010 James Darnley <james.darnley@gmail.com>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * Libav 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
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with Libav; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "libavutil/cpu.h"
23 #include "libavutil/common.h"
24 #include "libavutil/pixdesc.h"
35 { int score = FFABS(cur[mrefs-1+(j)] - cur[prefs-1-(j)])\
36 + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
37 + FFABS(cur[mrefs+1+(j)] - cur[prefs+1-(j)]);\
38 if (score < spatial_score) {\
39 spatial_score= score;\
40 spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
43 for (x = 0; x < w; x++) { \
45 int d = (prev2[0] + next2[0])>>1; \
47 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
48 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
49 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
50 int diff = FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2); \
51 int spatial_pred = (c+e)>>1; \
52 int spatial_score = FFABS(cur[mrefs-1] - cur[prefs-1]) + FFABS(c-e) \
53 + FFABS(cur[mrefs+1] - cur[prefs+1]) - 1; \
55 CHECK(-1) CHECK(-2) }} }} \
56 CHECK( 1) CHECK( 2) }} }} \
59 int b = (prev2[2*mrefs] + next2[2*mrefs])>>1; \
60 int f = (prev2[2*prefs] + next2[2*prefs])>>1; \
61 int max = FFMAX3(d-e, d-c, FFMIN(b-c, f-e)); \
62 int min = FFMIN3(d-e, d-c, FFMAX(b-c, f-e)); \
64 diff = FFMAX3(diff, min, -max); \
67 if (spatial_pred > d + diff) \
68 spatial_pred = d + diff; \
69 else if (spatial_pred < d - diff) \
70 spatial_pred = d - diff; \
72 dst[0] = spatial_pred; \
82 static void filter_line_c(uint8_t *dst,
83 uint8_t *prev, uint8_t *cur, uint8_t *next,
84 int w, int prefs, int mrefs, int parity, int mode)
87 uint8_t *prev2 = parity ? prev : cur ;
88 uint8_t *next2 = parity ? cur : next;
93 static void filter_line_c_16bit(uint16_t *dst,
94 uint16_t *prev, uint16_t *cur, uint16_t *next,
95 int w, int prefs, int mrefs, int parity, int mode)
98 uint16_t *prev2 = parity ? prev : cur ;
99 uint16_t *next2 = parity ? cur : next;
106 static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
109 YADIFContext *yadif = ctx->priv;
112 for (i = 0; i < yadif->csp->nb_components; i++) {
113 int w = dstpic->video->w;
114 int h = dstpic->video->h;
115 int refs = yadif->cur->linesize[i];
116 int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8;
118 if (i == 1 || i == 2) {
119 /* Why is this not part of the per-plane description thing? */
120 w >>= yadif->csp->log2_chroma_w;
121 h >>= yadif->csp->log2_chroma_h;
124 for (y = 0; y < h; y++) {
125 if ((y ^ parity) & 1) {
126 uint8_t *prev = &yadif->prev->data[i][y*refs];
127 uint8_t *cur = &yadif->cur ->data[i][y*refs];
128 uint8_t *next = &yadif->next->data[i][y*refs];
129 uint8_t *dst = &dstpic->data[i][y*dstpic->linesize[i]];
130 int mode = y==1 || y+2==h ? 2 : yadif->mode;
131 yadif->filter_line(dst, prev, cur, next, w, y+1<h ? refs : -refs, y ? -refs : refs, parity ^ tff, mode);
133 memcpy(&dstpic->data[i][y*dstpic->linesize[i]],
134 &yadif->cur->data[i][y*refs], w*df);
139 __asm__ volatile("emms \n\t" : : : "memory");
143 static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms, int w, int h)
145 AVFilterBufferRef *picref;
146 int width = FFALIGN(w, 32);
147 int height= FFALIGN(h+2, 32);
150 picref = ff_default_get_video_buffer(link, perms, width, height);
152 picref->video->w = w;
153 picref->video->h = h;
155 for (i = 0; i < 3; i++)
156 picref->data[i] += picref->linesize[i];
161 static void return_frame(AVFilterContext *ctx, int is_second)
163 YADIFContext *yadif = ctx->priv;
164 AVFilterLink *link= ctx->outputs[0];
167 if (yadif->parity == -1) {
168 tff = yadif->cur->video->interlaced ?
169 yadif->cur->video->top_field_first : 1;
171 tff = yadif->parity^1;
175 yadif->out = ff_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
176 AV_PERM_REUSE, link->w, link->h);
177 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
178 yadif->out->video->interlaced = 0;
182 yadif->csp = &av_pix_fmt_descriptors[link->format];
183 if (yadif->csp->comp[0].depth_minus1 / 8 == 1)
184 yadif->filter_line = filter_line_c_16bit;
186 filter(ctx, yadif->out, tff ^ !is_second, tff);
189 int64_t cur_pts = yadif->cur->pts;
190 int64_t next_pts = yadif->next->pts;
192 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
193 yadif->out->pts = cur_pts + next_pts;
195 yadif->out->pts = AV_NOPTS_VALUE;
197 ff_start_frame(ctx->outputs[0], yadif->out);
199 ff_draw_slice(ctx->outputs[0], 0, link->h, 1);
200 ff_end_frame(ctx->outputs[0]);
202 yadif->frame_pending = (yadif->mode&1) && !is_second;
205 static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
207 AVFilterContext *ctx = link->dst;
208 YADIFContext *yadif = ctx->priv;
210 if (yadif->frame_pending)
211 return_frame(ctx, 1);
214 avfilter_unref_buffer(yadif->prev);
215 yadif->prev = yadif->cur;
216 yadif->cur = yadif->next;
217 yadif->next = picref;
222 if (yadif->auto_enable && !yadif->cur->video->interlaced) {
223 yadif->out = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
224 avfilter_unref_buffer(yadif->prev);
226 if (yadif->out->pts != AV_NOPTS_VALUE)
227 yadif->out->pts *= 2;
228 ff_start_frame(ctx->outputs[0], yadif->out);
233 yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
235 yadif->out = ff_get_video_buffer(ctx->outputs[0], AV_PERM_WRITE | AV_PERM_PRESERVE |
236 AV_PERM_REUSE, link->w, link->h);
238 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
239 yadif->out->video->interlaced = 0;
240 if (yadif->out->pts != AV_NOPTS_VALUE)
241 yadif->out->pts *= 2;
242 ff_start_frame(ctx->outputs[0], yadif->out);
245 static void end_frame(AVFilterLink *link)
247 AVFilterContext *ctx = link->dst;
248 YADIFContext *yadif = ctx->priv;
253 if (yadif->auto_enable && !yadif->cur->video->interlaced) {
254 ff_draw_slice(ctx->outputs[0], 0, link->h, 1);
255 ff_end_frame(ctx->outputs[0]);
259 return_frame(ctx, 0);
262 static int request_frame(AVFilterLink *link)
264 AVFilterContext *ctx = link->src;
265 YADIFContext *yadif = ctx->priv;
267 if (yadif->frame_pending) {
268 return_frame(ctx, 1);
278 ret = ff_request_frame(link->src->inputs[0]);
280 if (ret == AVERROR_EOF && yadif->next) {
281 AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, AV_PERM_READ);
282 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
284 start_frame(link->src->inputs[0], next);
285 end_frame(link->src->inputs[0]);
287 } else if (ret < 0) {
290 } while (!yadif->cur);
295 static int poll_frame(AVFilterLink *link)
297 YADIFContext *yadif = link->src->priv;
300 if (yadif->frame_pending)
303 val = ff_poll_frame(link->src->inputs[0]);
307 if (val==1 && !yadif->next) { //FIXME change API to not requre this red tape
308 if ((ret = ff_request_frame(link->src->inputs[0])) < 0)
310 val = ff_poll_frame(link->src->inputs[0]);
314 assert(yadif->next || !val);
316 if (yadif->auto_enable && yadif->next && !yadif->next->video->interlaced)
319 return val * ((yadif->mode&1)+1);
322 static av_cold void uninit(AVFilterContext *ctx)
324 YADIFContext *yadif = ctx->priv;
326 if (yadif->prev) avfilter_unref_buffer(yadif->prev);
327 if (yadif->cur ) avfilter_unref_buffer(yadif->cur );
328 if (yadif->next) avfilter_unref_buffer(yadif->next);
331 static int query_formats(AVFilterContext *ctx)
333 static const enum PixelFormat pix_fmts[] = {
343 AV_NE( PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE ),
346 AV_NE( PIX_FMT_YUV420P10BE, PIX_FMT_YUV420P10LE ),
347 AV_NE( PIX_FMT_YUV422P10BE, PIX_FMT_YUV422P10LE ),
348 AV_NE( PIX_FMT_YUV444P10BE, PIX_FMT_YUV444P10LE ),
349 AV_NE( PIX_FMT_YUV420P16BE, PIX_FMT_YUV420P16LE ),
350 AV_NE( PIX_FMT_YUV422P16BE, PIX_FMT_YUV422P16LE ),
351 AV_NE( PIX_FMT_YUV444P16BE, PIX_FMT_YUV444P16LE ),
356 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
361 static av_cold int init(AVFilterContext *ctx, const char *args)
363 YADIFContext *yadif = ctx->priv;
367 yadif->auto_enable = 0;
370 if (args) sscanf(args, "%d:%d:%d", &yadif->mode, &yadif->parity, &yadif->auto_enable);
372 yadif->filter_line = filter_line_c;
375 ff_yadif_init_x86(yadif);
377 av_log(ctx, AV_LOG_VERBOSE, "mode:%d parity:%d auto_enable:%d\n", yadif->mode, yadif->parity, yadif->auto_enable);
382 static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
384 static int config_props(AVFilterLink *link)
386 link->time_base.num = link->src->inputs[0]->time_base.num;
387 link->time_base.den = link->src->inputs[0]->time_base.den * 2;
388 link->w = link->src->inputs[0]->w;
389 link->h = link->src->inputs[0]->h;
394 AVFilter avfilter_vf_yadif = {
396 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image"),
398 .priv_size = sizeof(YADIFContext),
401 .query_formats = query_formats,
403 .inputs = (const AVFilterPad[]) {{ .name = "default",
404 .type = AVMEDIA_TYPE_VIDEO,
405 .start_frame = start_frame,
406 .get_video_buffer = get_video_buffer,
407 .draw_slice = null_draw_slice,
408 .end_frame = end_frame, },
411 .outputs = (const AVFilterPad[]) {{ .name = "default",
412 .type = AVMEDIA_TYPE_VIDEO,
413 .poll_frame = poll_frame,
414 .request_frame = request_frame,
415 .config_props = config_props, },