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;
65 { int score = FFABS(cur[mrefs-1+(j)] - cur[prefs-1-(j)])\
66 + FFABS(cur[mrefs +(j)] - cur[prefs -(j)])\
67 + FFABS(cur[mrefs+1+(j)] - cur[prefs+1-(j)]);\
68 if (score < spatial_score) {\
69 spatial_score= score;\
70 spatial_pred= (cur[mrefs +(j)] + cur[prefs -(j)])>>1;\
73 for (x = 0; x < w; x++) { \
75 int d = (prev2[0] + next2[0])>>1; \
77 int temporal_diff0 = FFABS(prev2[0] - next2[0]); \
78 int temporal_diff1 =(FFABS(prev[mrefs] - c) + FFABS(prev[prefs] - e) )>>1; \
79 int temporal_diff2 =(FFABS(next[mrefs] - c) + FFABS(next[prefs] - e) )>>1; \
80 int diff = FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2); \
81 int spatial_pred = (c+e)>>1; \
82 int spatial_score = FFABS(cur[mrefs-1] - cur[prefs-1]) + FFABS(c-e) \
83 + FFABS(cur[mrefs+1] - cur[prefs+1]) - 1; \
85 CHECK(-1) CHECK(-2) }} }} \
86 CHECK( 1) CHECK( 2) }} }} \
89 int b = (prev2[2*mrefs] + next2[2*mrefs])>>1; \
90 int f = (prev2[2*prefs] + next2[2*prefs])>>1; \
91 int max = FFMAX3(d-e, d-c, FFMIN(b-c, f-e)); \
92 int min = FFMIN3(d-e, d-c, FFMAX(b-c, f-e)); \
94 diff = FFMAX3(diff, min, -max); \
97 if (spatial_pred > d + diff) \
98 spatial_pred = d + diff; \
99 else if (spatial_pred < d - diff) \
100 spatial_pred = d - diff; \
102 dst[0] = spatial_pred; \
112 static void filter_line_c(uint8_t *dst,
113 uint8_t *prev, uint8_t *cur, uint8_t *next,
114 int w, int prefs, int mrefs, int parity, int mode)
117 uint8_t *prev2 = parity ? prev : cur ;
118 uint8_t *next2 = parity ? cur : next;
123 static void filter_line_c_16bit(uint16_t *dst,
124 uint16_t *prev, uint16_t *cur, uint16_t *next,
125 int w, int prefs, int mrefs, int parity, int mode)
128 uint16_t *prev2 = parity ? prev : cur ;
129 uint16_t *next2 = parity ? cur : next;
136 static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
139 YADIFContext *yadif = ctx->priv;
142 for (i = 0; i < yadif->csp->nb_components; i++) {
143 int w = dstpic->video->w;
144 int h = dstpic->video->h;
145 int refs = yadif->cur->linesize[i];
146 int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8;
148 if (i == 1 || i == 2) {
149 /* Why is this not part of the per-plane description thing? */
150 w >>= yadif->csp->log2_chroma_w;
151 h >>= yadif->csp->log2_chroma_h;
154 for (y = 0; y < h; y++) {
155 if ((y ^ parity) & 1) {
156 uint8_t *prev = &yadif->prev->data[i][y*refs];
157 uint8_t *cur = &yadif->cur ->data[i][y*refs];
158 uint8_t *next = &yadif->next->data[i][y*refs];
159 uint8_t *dst = &dstpic->data[i][y*dstpic->linesize[i]];
160 int mode = y==1 || y+2==h ? 2 : yadif->mode;
161 yadif->filter_line(dst, prev, cur, next, w, y+1<h ? refs : -refs, y ? -refs : refs, parity ^ tff, mode);
163 memcpy(&dstpic->data[i][y*dstpic->linesize[i]],
164 &yadif->cur->data[i][y*refs], w*df);
169 __asm__ volatile("emms \n\t" : : : "memory");
173 static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms, int w, int h)
175 AVFilterBufferRef *picref;
176 int width = FFALIGN(w, 32);
177 int height= FFALIGN(h+2, 32);
180 picref = avfilter_default_get_video_buffer(link, perms, width, height);
182 picref->video->w = w;
183 picref->video->h = h;
185 for (i = 0; i < 3; i++)
186 picref->data[i] += picref->linesize[i];
191 static void return_frame(AVFilterContext *ctx, int is_second)
193 YADIFContext *yadif = ctx->priv;
194 AVFilterLink *link= ctx->outputs[0];
197 if (yadif->parity == -1) {
198 tff = yadif->cur->video->interlaced ?
199 yadif->cur->video->top_field_first : 1;
201 tff = yadif->parity^1;
205 yadif->out = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
206 AV_PERM_REUSE, link->w, link->h);
207 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
208 yadif->out->video->interlaced = 0;
212 yadif->csp = &av_pix_fmt_descriptors[link->format];
213 if (yadif->csp->comp[0].depth_minus1 / 8 == 1)
214 yadif->filter_line = (void*)filter_line_c_16bit;
216 filter(ctx, yadif->out, tff ^ !is_second, tff);
219 if (yadif->next->pts != AV_NOPTS_VALUE &&
220 yadif->cur->pts != AV_NOPTS_VALUE) {
222 (yadif->next->pts&yadif->cur->pts) +
223 ((yadif->next->pts^yadif->cur->pts)>>1);
225 yadif->out->pts = AV_NOPTS_VALUE;
227 avfilter_start_frame(ctx->outputs[0], yadif->out);
229 avfilter_draw_slice(ctx->outputs[0], 0, link->h, 1);
230 avfilter_end_frame(ctx->outputs[0]);
232 yadif->frame_pending = (yadif->mode&1) && !is_second;
235 static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
237 AVFilterContext *ctx = link->dst;
238 YADIFContext *yadif = ctx->priv;
240 if (yadif->frame_pending)
241 return_frame(ctx, 1);
244 avfilter_unref_buffer(yadif->prev);
245 yadif->prev = yadif->cur;
246 yadif->cur = yadif->next;
247 yadif->next = picref;
252 if (yadif->auto_enable && !yadif->cur->video->interlaced) {
253 yadif->out = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
254 avfilter_unref_buffer(yadif->prev);
256 avfilter_start_frame(ctx->outputs[0], yadif->out);
261 yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
263 yadif->out = avfilter_get_video_buffer(ctx->outputs[0], AV_PERM_WRITE | AV_PERM_PRESERVE |
264 AV_PERM_REUSE, link->w, link->h);
266 avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
267 yadif->out->video->interlaced = 0;
268 avfilter_start_frame(ctx->outputs[0], yadif->out);
271 static void end_frame(AVFilterLink *link)
273 AVFilterContext *ctx = link->dst;
274 YADIFContext *yadif = ctx->priv;
279 if (yadif->auto_enable && !yadif->cur->video->interlaced) {
280 avfilter_draw_slice(ctx->outputs[0], 0, link->h, 1);
281 avfilter_end_frame(ctx->outputs[0]);
285 return_frame(ctx, 0);
288 static int request_frame(AVFilterLink *link)
290 AVFilterContext *ctx = link->src;
291 YADIFContext *yadif = ctx->priv;
293 if (yadif->frame_pending) {
294 return_frame(ctx, 1);
301 if ((ret = avfilter_request_frame(link->src->inputs[0])))
303 } while (!yadif->cur);
308 static int poll_frame(AVFilterLink *link)
310 YADIFContext *yadif = link->src->priv;
313 if (yadif->frame_pending)
316 val = avfilter_poll_frame(link->src->inputs[0]);
318 if (val==1 && !yadif->next) { //FIXME change API to not requre this red tape
319 if ((ret = avfilter_request_frame(link->src->inputs[0])) < 0)
321 val = avfilter_poll_frame(link->src->inputs[0]);
323 assert(yadif->next || !val);
325 if (yadif->auto_enable && yadif->next && !yadif->next->video->interlaced)
328 return val * ((yadif->mode&1)+1);
331 static av_cold void uninit(AVFilterContext *ctx)
333 YADIFContext *yadif = ctx->priv;
335 if (yadif->prev) avfilter_unref_buffer(yadif->prev);
336 if (yadif->cur ) avfilter_unref_buffer(yadif->cur );
337 if (yadif->next) avfilter_unref_buffer(yadif->next);
340 static int query_formats(AVFilterContext *ctx)
342 static const enum PixelFormat pix_fmts[] = {
352 AV_NE( PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE ),
355 AV_NE( PIX_FMT_YUV420P10BE, PIX_FMT_YUV420P10LE ),
356 AV_NE( PIX_FMT_YUV422P10BE, PIX_FMT_YUV422P10LE ),
357 AV_NE( PIX_FMT_YUV444P10BE, PIX_FMT_YUV444P10LE ),
358 AV_NE( PIX_FMT_YUV420P16BE, PIX_FMT_YUV420P16LE ),
359 AV_NE( PIX_FMT_YUV422P16BE, PIX_FMT_YUV422P16LE ),
360 AV_NE( PIX_FMT_YUV444P16BE, PIX_FMT_YUV444P16LE ),
365 avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
370 static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
372 YADIFContext *yadif = ctx->priv;
373 int cpu_flags = av_get_cpu_flags();
377 yadif->auto_enable = 0;
380 if (args) sscanf(args, "%d:%d:%d", &yadif->mode, &yadif->parity, &yadif->auto_enable);
382 yadif->filter_line = filter_line_c;
383 if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
384 yadif->filter_line = ff_yadif_filter_line_ssse3;
385 else if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
386 yadif->filter_line = ff_yadif_filter_line_sse2;
387 else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX)
388 yadif->filter_line = ff_yadif_filter_line_mmx;
390 av_log(ctx, AV_LOG_INFO, "mode:%d parity:%d auto_enable:%d\n", yadif->mode, yadif->parity, yadif->auto_enable);
395 static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
397 AVFilter avfilter_vf_yadif = {
399 .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image."),
401 .priv_size = sizeof(YADIFContext),
404 .query_formats = query_formats,
406 .inputs = (const AVFilterPad[]) {{ .name = "default",
407 .type = AVMEDIA_TYPE_VIDEO,
408 .start_frame = start_frame,
409 .get_video_buffer = get_video_buffer,
410 .draw_slice = null_draw_slice,
411 .end_frame = end_frame,
412 .rej_perms = AV_PERM_REUSE2, },
415 .outputs = (const AVFilterPad[]) {{ .name = "default",
416 .type = AVMEDIA_TYPE_VIDEO,
417 .poll_frame = poll_frame,
418 .request_frame = request_frame, },