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/cpu.h"
21 #include "libavutil/common.h"
22 #include "libavutil/pixdesc.h"
31 * 0: send 1 frame for each frame
32 * 1: send 1 frame for each field
33 * 2: like 0 but skips spatial interlacing check
34 * 3: like 1 but skips spatial interlacing check
40 * 1: bottom field first
48 * 0: deinterlace all frames
49 * 1: only deinterlace frames marked as interlaced
53 AVFilterBufferRef *cur;
54 AVFilterBufferRef *next;
55 AVFilterBufferRef *prev;
56 AVFilterBufferRef *out;
57 void (*filter_line)(uint8_t *dst,
58 uint8_t *prev, uint8_t *cur, uint8_t *next,
59 int w, int prefs, int mrefs, int parity, int mode);
61 const AVPixFmtDescriptor *csp;
66 { int score = FFABS(cur[mrefs-1+(j)] - cur[prefs-1-(j)])\
67 + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
68 + FFABS(cur[mrefs+1+(j)] - cur[prefs+1-(j)]);\
69 if (score < spatial_score) {\
70 spatial_score= score;\
71 spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
74 for (x = 0; x < w; x++) { \
76 int d = (prev2[0] + next2[0])>>1; \
78 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
79 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
80 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
81 int diff = FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2); \
82 int spatial_pred = (c+e)>>1; \
83 int spatial_score = FFABS(cur[mrefs-1] - cur[prefs-1]) + FFABS(c-e) \
84 + FFABS(cur[mrefs+1] - cur[prefs+1]) - 1; \
86 CHECK(-1) CHECK(-2) }} }} \
87 CHECK( 1) CHECK( 2) }} }} \
90 int b = (prev2[2*mrefs] + next2[2*mrefs])>>1; \
91 int f = (prev2[2*prefs] + next2[2*prefs])>>1; \
92 int max = FFMAX3(d-e, d-c, FFMIN(b-c, f-e)); \
93 int min = FFMIN3(d-e, d-c, FFMAX(b-c, f-e)); \
95 diff = FFMAX3(diff, min, -max); \
98 if (spatial_pred > d + diff) \
99 spatial_pred = d + diff; \
100 else if (spatial_pred < d - diff) \
101 spatial_pred = d - diff; \
103 dst[0] = spatial_pred; \
113 static void filter_line_c(uint8_t *dst,
114 uint8_t *prev, uint8_t *cur, uint8_t *next,
115 int w, int prefs, int mrefs, int parity, int mode)
118 uint8_t *prev2 = parity ? prev : cur ;
119 uint8_t *next2 = parity ? cur : next;
124 static void filter_line_c_16bit(uint16_t *dst,
125 uint16_t *prev, uint16_t *cur, uint16_t *next,
126 int w, int prefs, int mrefs, int parity, int mode)
129 uint16_t *prev2 = parity ? prev : cur ;
130 uint16_t *next2 = parity ? cur : next;
137 static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
140 YADIFContext *yadif = ctx->priv;
143 for (i = 0; i < yadif->csp->nb_components; i++) {
144 int w = dstpic->video->w;
145 int h = dstpic->video->h;
146 int refs = yadif->cur->linesize[i];
147 int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8;
149 if (i == 1 || i == 2) {
150 /* Why is this not part of the per-plane description thing? */
151 w >>= yadif->csp->log2_chroma_w;
152 h >>= yadif->csp->log2_chroma_h;
155 for (y = 0; y < h; y++) {
156 if ((y ^ parity) & 1) {
157 uint8_t *prev = &yadif->prev->data[i][y*refs];
158 uint8_t *cur = &yadif->cur ->data[i][y*refs];
159 uint8_t *next = &yadif->next->data[i][y*refs];
160 uint8_t *dst = &dstpic->data[i][y*dstpic->linesize[i]];
161 int mode = y==1 || y+2==h ? 2 : yadif->mode;
162 yadif->filter_line(dst, prev, cur, next, w, y+1<h ? refs : -refs, y ? -refs : refs, parity ^ tff, mode);
164 memcpy(&dstpic->data[i][y*dstpic->linesize[i]],
165 &yadif->cur->data[i][y*refs], w*df);
170 __asm__ volatile("emms \n\t" : : : "memory");
174 static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms, int w, int h)
176 AVFilterBufferRef *picref;
177 int width = FFALIGN(w, 32);
178 int height= FFALIGN(h+2, 32);
181 picref = avfilter_default_get_video_buffer(link, perms, width, height);
183 picref->video->w = w;
184 picref->video->h = h;
186 for (i = 0; i < 3; i++)
187 picref->data[i] += picref->linesize[i];
192 static void return_frame(AVFilterContext *ctx, int is_second)
194 YADIFContext *yadif = ctx->priv;
195 AVFilterLink *link= ctx->outputs[0];
198 if (yadif->parity == -1) {
199 tff = yadif->cur->video->interlaced ?
200 yadif->cur->video->top_field_first : 1;
202 tff = yadif->parity^1;
206 yadif->out = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
207 AV_PERM_REUSE, link->w, link->h);
208 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
209 yadif->out->video->interlaced = 0;
213 yadif->csp = &av_pix_fmt_descriptors[link->format];
214 if (yadif->csp->comp[0].depth_minus1 / 8 == 1)
215 yadif->filter_line = (void*)filter_line_c_16bit;
217 filter(ctx, yadif->out, tff ^ !is_second, tff);
220 int64_t cur_pts = yadif->cur->pts;
221 int64_t next_pts = yadif->next->pts;
223 if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
224 yadif->out->pts = cur_pts + next_pts;
226 yadif->out->pts = AV_NOPTS_VALUE;
228 avfilter_start_frame(ctx->outputs[0], yadif->out);
230 avfilter_draw_slice(ctx->outputs[0], 0, link->h, 1);
231 avfilter_end_frame(ctx->outputs[0]);
233 yadif->frame_pending = (yadif->mode&1) && !is_second;
236 static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
238 AVFilterContext *ctx = link->dst;
239 YADIFContext *yadif = ctx->priv;
241 if (yadif->frame_pending)
242 return_frame(ctx, 1);
245 avfilter_unref_buffer(yadif->prev);
246 yadif->prev = yadif->cur;
247 yadif->cur = yadif->next;
248 yadif->next = picref;
253 if (yadif->auto_enable && !yadif->cur->video->interlaced) {
254 yadif->out = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
255 avfilter_unref_buffer(yadif->prev);
257 if (yadif->out->pts != AV_NOPTS_VALUE)
258 yadif->out->pts *= 2;
259 avfilter_start_frame(ctx->outputs[0], yadif->out);
264 yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
266 yadif->out = avfilter_get_video_buffer(ctx->outputs[0], AV_PERM_WRITE | AV_PERM_PRESERVE |
267 AV_PERM_REUSE, link->w, link->h);
269 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
270 yadif->out->video->interlaced = 0;
271 if (yadif->out->pts != AV_NOPTS_VALUE)
272 yadif->out->pts *= 2;
273 avfilter_start_frame(ctx->outputs[0], yadif->out);
276 static void end_frame(AVFilterLink *link)
278 AVFilterContext *ctx = link->dst;
279 YADIFContext *yadif = ctx->priv;
284 if (yadif->auto_enable && !yadif->cur->video->interlaced) {
285 avfilter_draw_slice(ctx->outputs[0], 0, link->h, 1);
286 avfilter_end_frame(ctx->outputs[0]);
290 return_frame(ctx, 0);
293 static int request_frame(AVFilterLink *link)
295 AVFilterContext *ctx = link->src;
296 YADIFContext *yadif = ctx->priv;
298 if (yadif->frame_pending) {
299 return_frame(ctx, 1);
309 ret = avfilter_request_frame(link->src->inputs[0]);
311 if (ret == AVERROR_EOF && yadif->next) {
312 AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, AV_PERM_READ);
313 next->pts = yadif->next->pts * 2 - yadif->cur->pts;
315 start_frame(link->src->inputs[0], next);
316 end_frame(link->src->inputs[0]);
318 } else if (ret < 0) {
321 } while (!yadif->cur);
326 static int poll_frame(AVFilterLink *link)
328 YADIFContext *yadif = link->src->priv;
331 if (yadif->frame_pending)
334 val = avfilter_poll_frame(link->src->inputs[0]);
338 if (val >= 1 && !yadif->next) { //FIXME change API to not requre this red tape
339 if ((ret = avfilter_request_frame(link->src->inputs[0])) < 0)
341 val = avfilter_poll_frame(link->src->inputs[0]);
345 assert(yadif->next || !val);
347 if (yadif->auto_enable && yadif->next && !yadif->next->video->interlaced)
350 return val * ((yadif->mode&1)+1);
353 static av_cold void uninit(AVFilterContext *ctx)
355 YADIFContext *yadif = ctx->priv;
357 if (yadif->prev) avfilter_unref_buffer(yadif->prev);
358 if (yadif->cur ) avfilter_unref_buffer(yadif->cur );
359 if (yadif->next) avfilter_unref_buffer(yadif->next);
362 static int query_formats(AVFilterContext *ctx)
364 static const enum PixelFormat pix_fmts[] = {
374 AV_NE( PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE ),
377 AV_NE( PIX_FMT_YUV420P10BE, PIX_FMT_YUV420P10LE ),
378 AV_NE( PIX_FMT_YUV422P10BE, PIX_FMT_YUV422P10LE ),
379 AV_NE( PIX_FMT_YUV444P10BE, PIX_FMT_YUV444P10LE ),
380 AV_NE( PIX_FMT_YUV420P16BE, PIX_FMT_YUV420P16LE ),
381 AV_NE( PIX_FMT_YUV422P16BE, PIX_FMT_YUV422P16LE ),
382 AV_NE( PIX_FMT_YUV444P16BE, PIX_FMT_YUV444P16LE ),
389 avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
394 static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
396 YADIFContext *yadif = ctx->priv;
397 int cpu_flags = av_get_cpu_flags();
401 yadif->auto_enable = 0;
404 if (args) sscanf(args, "%d:%d:%d", &yadif->mode, &yadif->parity, &yadif->auto_enable);
406 yadif->filter_line = filter_line_c;
407 if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
408 yadif->filter_line = ff_yadif_filter_line_ssse3;
409 else if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
410 yadif->filter_line = ff_yadif_filter_line_sse2;
411 else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX)
412 yadif->filter_line = ff_yadif_filter_line_mmx;
414 av_log(ctx, AV_LOG_INFO, "mode:%d parity:%d auto_enable:%d\n", yadif->mode, yadif->parity, yadif->auto_enable);
419 static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
421 static int config_props(AVFilterLink *link)
423 link->time_base.num = link->src->inputs[0]->time_base.num;
424 link->time_base.den = link->src->inputs[0]->time_base.den * 2;
425 link->w = link->src->inputs[0]->w;
426 link->h = link->src->inputs[0]->h;
431 AVFilter avfilter_vf_yadif = {
433 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
435 .priv_size = sizeof(YADIFContext),
438 .query_formats = query_formats,
440 .inputs = (const AVFilterPad[]) {{ .name = "default",
441 .type = AVMEDIA_TYPE_VIDEO,
442 .start_frame = start_frame,
443 .get_video_buffer = get_video_buffer,
444 .draw_slice = null_draw_slice,
445 .end_frame = end_frame,
446 .rej_perms = AV_PERM_REUSE2, },
449 .outputs = (const AVFilterPad[]) {{ .name = "default",
450 .type = AVMEDIA_TYPE_VIDEO,
451 .poll_frame = poll_frame,
452 .request_frame = request_frame,
453 .config_props = config_props, },