blob: 54a2c7aa60a218e249d16f0895c66a740f2cd16a
1 | /* |
2 | * Copyright (c) 2012 Fredrik Mellbin |
3 | * Copyright (c) 2013 Clément Bœsch |
4 | * |
5 | * This file is part of FFmpeg. |
6 | * |
7 | * FFmpeg is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Lesser General Public |
9 | * License as published by the Free Software Foundation; either |
10 | * version 2.1 of the License, or (at your option) any later version. |
11 | * |
12 | * FFmpeg 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 GNU |
15 | * Lesser General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU Lesser General Public |
18 | * License along with FFmpeg; if not, write to the Free Software |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | */ |
21 | |
22 | /** |
23 | * @file |
24 | * Fieldmatching filter, ported from VFM filter (VapourSynth) by Clément. |
25 | * Fredrik Mellbin is the author of the VIVTC/VFM filter, which is itself a |
26 | * light clone of the TIVTC/TFM (AviSynth) filter written by Kevin Stone |
27 | * (tritical), the original author. |
28 | * |
29 | * @see http://bengal.missouri.edu/~kes25c/ |
30 | * @see http://www.vapoursynth.com/about/ |
31 | */ |
32 | |
33 | #include <inttypes.h> |
34 | |
35 | #include "libavutil/avassert.h" |
36 | #include "libavutil/imgutils.h" |
37 | #include "libavutil/opt.h" |
38 | #include "libavutil/timestamp.h" |
39 | #include "avfilter.h" |
40 | #include "internal.h" |
41 | |
42 | #define INPUT_MAIN 0 |
43 | #define INPUT_CLEANSRC 1 |
44 | |
45 | enum fieldmatch_parity { |
46 | FM_PARITY_AUTO = -1, |
47 | FM_PARITY_BOTTOM = 0, |
48 | FM_PARITY_TOP = 1, |
49 | }; |
50 | |
51 | enum matching_mode { |
52 | MODE_PC, |
53 | MODE_PC_N, |
54 | MODE_PC_U, |
55 | MODE_PC_N_UB, |
56 | MODE_PCN, |
57 | MODE_PCN_UB, |
58 | NB_MODE |
59 | }; |
60 | |
61 | enum comb_matching_mode { |
62 | COMBMATCH_NONE, |
63 | COMBMATCH_SC, |
64 | COMBMATCH_FULL, |
65 | NB_COMBMATCH |
66 | }; |
67 | |
68 | enum comb_dbg { |
69 | COMBDBG_NONE, |
70 | COMBDBG_PCN, |
71 | COMBDBG_PCNUB, |
72 | NB_COMBDBG |
73 | }; |
74 | |
75 | typedef struct { |
76 | const AVClass *class; |
77 | |
78 | AVFrame *prv, *src, *nxt; ///< main sliding window of 3 frames |
79 | AVFrame *prv2, *src2, *nxt2; ///< sliding window of the optional second stream |
80 | int got_frame[2]; ///< frame request flag for each input stream |
81 | int hsub, vsub; ///< chroma subsampling values |
82 | uint32_t eof; ///< bitmask for end of stream |
83 | int64_t lastscdiff; |
84 | int64_t lastn; |
85 | |
86 | /* options */ |
87 | int order; |
88 | int ppsrc; |
89 | int mode; ///< matching_mode |
90 | int field; |
91 | int mchroma; |
92 | int y0, y1; |
93 | int64_t scthresh; |
94 | double scthresh_flt; |
95 | int combmatch; ///< comb_matching_mode |
96 | int combdbg; |
97 | int cthresh; |
98 | int chroma; |
99 | int blockx, blocky; |
100 | int combpel; |
101 | |
102 | /* misc buffers */ |
103 | uint8_t *map_data[4]; |
104 | int map_linesize[4]; |
105 | uint8_t *cmask_data[4]; |
106 | int cmask_linesize[4]; |
107 | int *c_array; |
108 | int tpitchy, tpitchuv; |
109 | uint8_t *tbuffer; |
110 | } FieldMatchContext; |
111 | |
112 | #define OFFSET(x) offsetof(FieldMatchContext, x) |
113 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
114 | |
115 | static const AVOption fieldmatch_options[] = { |
116 | { "order", "specify the assumed field order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "order" }, |
117 | { "auto", "auto detect parity", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "order" }, |
118 | { "bff", "assume bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "order" }, |
119 | { "tff", "assume top field first", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "order" }, |
120 | { "mode", "set the matching mode or strategy to use", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_PC_N}, MODE_PC, NB_MODE-1, FLAGS, "mode" }, |
121 | { "pc", "2-way match (p/c)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
122 | { "pc_n", "2-way match + 3rd match on combed (p/c + u)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_N}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
123 | { "pc_u", "2-way match + 3rd match (same order) on combed (p/c + u)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_U}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
124 | { "pc_n_ub", "2-way match + 3rd match on combed + 4th/5th matches if still combed (p/c + u + u/b)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PC_N_UB}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
125 | { "pcn", "3-way match (p/c/n)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
126 | { "pcn_ub", "3-way match + 4th/5th matches on combed (p/c/n + u/b)", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PCN_UB}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
127 | { "ppsrc", "mark main input as a pre-processed input and activate clean source input stream", OFFSET(ppsrc), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS }, |
128 | { "field", "set the field to match from", OFFSET(field), AV_OPT_TYPE_INT, {.i64=FM_PARITY_AUTO}, -1, 1, FLAGS, "field" }, |
129 | { "auto", "automatic (same value as 'order')", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_AUTO}, INT_MIN, INT_MAX, FLAGS, "field" }, |
130 | { "bottom", "bottom field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "field" }, |
131 | { "top", "top field", 0, AV_OPT_TYPE_CONST, {.i64=FM_PARITY_TOP}, INT_MIN, INT_MAX, FLAGS, "field" }, |
132 | { "mchroma", "set whether or not chroma is included during the match comparisons", OFFSET(mchroma), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS }, |
133 | { "y0", "define an exclusion band which excludes the lines between y0 and y1 from the field matching decision", OFFSET(y0), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS }, |
134 | { "y1", "define an exclusion band which excludes the lines between y0 and y1 from the field matching decision", OFFSET(y1), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS }, |
135 | { "scthresh", "set scene change detection threshold", OFFSET(scthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl=12}, 0, 100, FLAGS }, |
136 | { "combmatch", "set combmatching mode", OFFSET(combmatch), AV_OPT_TYPE_INT, {.i64=COMBMATCH_SC}, COMBMATCH_NONE, NB_COMBMATCH-1, FLAGS, "combmatching" }, |
137 | { "none", "disable combmatching", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_NONE}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, |
138 | { "sc", "enable combmatching only on scene change", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_SC}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, |
139 | { "full", "enable combmatching all the time", 0, AV_OPT_TYPE_CONST, {.i64=COMBMATCH_FULL}, INT_MIN, INT_MAX, FLAGS, "combmatching" }, |
140 | { "combdbg", "enable comb debug", OFFSET(combdbg), AV_OPT_TYPE_INT, {.i64=COMBDBG_NONE}, COMBDBG_NONE, NB_COMBDBG-1, FLAGS, "dbglvl" }, |
141 | { "none", "no forced calculation", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_NONE}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, |
142 | { "pcn", "calculate p/c/n", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCN}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, |
143 | { "pcnub", "calculate p/c/n/u/b", 0, AV_OPT_TYPE_CONST, {.i64=COMBDBG_PCNUB}, INT_MIN, INT_MAX, FLAGS, "dbglvl" }, |
144 | { "cthresh", "set the area combing threshold used for combed frame detection", OFFSET(cthresh), AV_OPT_TYPE_INT, {.i64= 9}, -1, 0xff, FLAGS }, |
145 | { "chroma", "set whether or not chroma is considered in the combed frame decision", OFFSET(chroma), AV_OPT_TYPE_BOOL,{.i64= 0}, 0, 1, FLAGS }, |
146 | { "blockx", "set the x-axis size of the window used during combed frame detection", OFFSET(blockx), AV_OPT_TYPE_INT, {.i64=16}, 4, 1<<9, FLAGS }, |
147 | { "blocky", "set the y-axis size of the window used during combed frame detection", OFFSET(blocky), AV_OPT_TYPE_INT, {.i64=16}, 4, 1<<9, FLAGS }, |
148 | { "combpel", "set the number of combed pixels inside any of the blocky by blockx size blocks on the frame for the frame to be detected as combed", OFFSET(combpel), AV_OPT_TYPE_INT, {.i64=80}, 0, INT_MAX, FLAGS }, |
149 | { NULL } |
150 | }; |
151 | |
152 | AVFILTER_DEFINE_CLASS(fieldmatch); |
153 | |
154 | static int get_width(const FieldMatchContext *fm, const AVFrame *f, int plane) |
155 | { |
156 | return plane ? AV_CEIL_RSHIFT(f->width, fm->hsub) : f->width; |
157 | } |
158 | |
159 | static int get_height(const FieldMatchContext *fm, const AVFrame *f, int plane) |
160 | { |
161 | return plane ? AV_CEIL_RSHIFT(f->height, fm->vsub) : f->height; |
162 | } |
163 | |
164 | static int64_t luma_abs_diff(const AVFrame *f1, const AVFrame *f2) |
165 | { |
166 | int x, y; |
167 | const uint8_t *srcp1 = f1->data[0]; |
168 | const uint8_t *srcp2 = f2->data[0]; |
169 | const int src1_linesize = f1->linesize[0]; |
170 | const int src2_linesize = f2->linesize[0]; |
171 | const int width = f1->width; |
172 | const int height = f1->height; |
173 | int64_t acc = 0; |
174 | |
175 | for (y = 0; y < height; y++) { |
176 | for (x = 0; x < width; x++) |
177 | acc += abs(srcp1[x] - srcp2[x]); |
178 | srcp1 += src1_linesize; |
179 | srcp2 += src2_linesize; |
180 | } |
181 | return acc; |
182 | } |
183 | |
184 | static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v) |
185 | { |
186 | int y; |
187 | |
188 | for (y = 0; y < h; y++) { |
189 | memset(data, v, w); |
190 | data += linesize; |
191 | } |
192 | } |
193 | |
194 | static int calc_combed_score(const FieldMatchContext *fm, const AVFrame *src) |
195 | { |
196 | int x, y, plane, max_v = 0; |
197 | const int cthresh = fm->cthresh; |
198 | const int cthresh6 = cthresh * 6; |
199 | |
200 | for (plane = 0; plane < (fm->chroma ? 3 : 1); plane++) { |
201 | const uint8_t *srcp = src->data[plane]; |
202 | const int src_linesize = src->linesize[plane]; |
203 | const int width = get_width (fm, src, plane); |
204 | const int height = get_height(fm, src, plane); |
205 | uint8_t *cmkp = fm->cmask_data[plane]; |
206 | const int cmk_linesize = fm->cmask_linesize[plane]; |
207 | |
208 | if (cthresh < 0) { |
209 | fill_buf(cmkp, width, height, cmk_linesize, 0xff); |
210 | continue; |
211 | } |
212 | fill_buf(cmkp, width, height, cmk_linesize, 0); |
213 | |
214 | /* [1 -3 4 -3 1] vertical filter */ |
215 | #define FILTER(xm2, xm1, xp1, xp2) \ |
216 | abs( 4 * srcp[x] \ |
217 | -3 * (srcp[x + (xm1)*src_linesize] + srcp[x + (xp1)*src_linesize]) \ |
218 | + (srcp[x + (xm2)*src_linesize] + srcp[x + (xp2)*src_linesize])) > cthresh6 |
219 | |
220 | /* first line */ |
221 | for (x = 0; x < width; x++) { |
222 | const int s1 = abs(srcp[x] - srcp[x + src_linesize]); |
223 | if (s1 > cthresh && FILTER(2, 1, 1, 2)) |
224 | cmkp[x] = 0xff; |
225 | } |
226 | srcp += src_linesize; |
227 | cmkp += cmk_linesize; |
228 | |
229 | /* second line */ |
230 | for (x = 0; x < width; x++) { |
231 | const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
232 | const int s2 = abs(srcp[x] - srcp[x + src_linesize]); |
233 | if (s1 > cthresh && s2 > cthresh && FILTER(2, -1, 1, 2)) |
234 | cmkp[x] = 0xff; |
235 | } |
236 | srcp += src_linesize; |
237 | cmkp += cmk_linesize; |
238 | |
239 | /* all lines minus first two and last two */ |
240 | for (y = 2; y < height-2; y++) { |
241 | for (x = 0; x < width; x++) { |
242 | const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
243 | const int s2 = abs(srcp[x] - srcp[x + src_linesize]); |
244 | if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, 2)) |
245 | cmkp[x] = 0xff; |
246 | } |
247 | srcp += src_linesize; |
248 | cmkp += cmk_linesize; |
249 | } |
250 | |
251 | /* before-last line */ |
252 | for (x = 0; x < width; x++) { |
253 | const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
254 | const int s2 = abs(srcp[x] - srcp[x + src_linesize]); |
255 | if (s1 > cthresh && s2 > cthresh && FILTER(-2, -1, 1, -2)) |
256 | cmkp[x] = 0xff; |
257 | } |
258 | srcp += src_linesize; |
259 | cmkp += cmk_linesize; |
260 | |
261 | /* last line */ |
262 | for (x = 0; x < width; x++) { |
263 | const int s1 = abs(srcp[x] - srcp[x - src_linesize]); |
264 | if (s1 > cthresh && FILTER(-2, -1, -1, -2)) |
265 | cmkp[x] = 0xff; |
266 | } |
267 | } |
268 | |
269 | if (fm->chroma) { |
270 | uint8_t *cmkp = fm->cmask_data[0]; |
271 | uint8_t *cmkpU = fm->cmask_data[1]; |
272 | uint8_t *cmkpV = fm->cmask_data[2]; |
273 | const int width = AV_CEIL_RSHIFT(src->width, fm->hsub); |
274 | const int height = AV_CEIL_RSHIFT(src->height, fm->vsub); |
275 | const int cmk_linesize = fm->cmask_linesize[0] << 1; |
276 | const int cmk_linesizeUV = fm->cmask_linesize[2]; |
277 | uint8_t *cmkpp = cmkp - (cmk_linesize>>1); |
278 | uint8_t *cmkpn = cmkp + (cmk_linesize>>1); |
279 | uint8_t *cmkpnn = cmkp + cmk_linesize; |
280 | for (y = 1; y < height - 1; y++) { |
281 | cmkpp += cmk_linesize; |
282 | cmkp += cmk_linesize; |
283 | cmkpn += cmk_linesize; |
284 | cmkpnn += cmk_linesize; |
285 | cmkpV += cmk_linesizeUV; |
286 | cmkpU += cmk_linesizeUV; |
287 | for (x = 1; x < width - 1; x++) { |
288 | #define HAS_FF_AROUND(p, lz) (p[(x)-1 - (lz)] == 0xff || p[(x) - (lz)] == 0xff || p[(x)+1 - (lz)] == 0xff || \ |
289 | p[(x)-1 ] == 0xff || p[(x)+1 ] == 0xff || \ |
290 | p[(x)-1 + (lz)] == 0xff || p[(x) + (lz)] == 0xff || p[(x)+1 + (lz)] == 0xff) |
291 | if ((cmkpV[x] == 0xff && HAS_FF_AROUND(cmkpV, cmk_linesizeUV)) || |
292 | (cmkpU[x] == 0xff && HAS_FF_AROUND(cmkpU, cmk_linesizeUV))) { |
293 | ((uint16_t*)cmkp)[x] = 0xffff; |
294 | ((uint16_t*)cmkpn)[x] = 0xffff; |
295 | if (y&1) ((uint16_t*)cmkpp)[x] = 0xffff; |
296 | else ((uint16_t*)cmkpnn)[x] = 0xffff; |
297 | } |
298 | } |
299 | } |
300 | } |
301 | |
302 | { |
303 | const int blockx = fm->blockx; |
304 | const int blocky = fm->blocky; |
305 | const int xhalf = blockx/2; |
306 | const int yhalf = blocky/2; |
307 | const int cmk_linesize = fm->cmask_linesize[0]; |
308 | const uint8_t *cmkp = fm->cmask_data[0] + cmk_linesize; |
309 | const int width = src->width; |
310 | const int height = src->height; |
311 | const int xblocks = ((width+xhalf)/blockx) + 1; |
312 | const int xblocks4 = xblocks<<2; |
313 | const int yblocks = ((height+yhalf)/blocky) + 1; |
314 | int *c_array = fm->c_array; |
315 | const int arraysize = (xblocks*yblocks)<<2; |
316 | int heighta = (height/(blocky/2))*(blocky/2); |
317 | const int widtha = (width /(blockx/2))*(blockx/2); |
318 | if (heighta == height) |
319 | heighta = height - yhalf; |
320 | memset(c_array, 0, arraysize * sizeof(*c_array)); |
321 | |
322 | #define C_ARRAY_ADD(v) do { \ |
323 | const int box1 = (x / blockx) * 4; \ |
324 | const int box2 = ((x + xhalf) / blockx) * 4; \ |
325 | c_array[temp1 + box1 ] += v; \ |
326 | c_array[temp1 + box2 + 1] += v; \ |
327 | c_array[temp2 + box1 + 2] += v; \ |
328 | c_array[temp2 + box2 + 3] += v; \ |
329 | } while (0) |
330 | |
331 | #define VERTICAL_HALF(y_start, y_end) do { \ |
332 | for (y = y_start; y < y_end; y++) { \ |
333 | const int temp1 = (y / blocky) * xblocks4; \ |
334 | const int temp2 = ((y + yhalf) / blocky) * xblocks4; \ |
335 | for (x = 0; x < width; x++) \ |
336 | if (cmkp[x - cmk_linesize] == 0xff && \ |
337 | cmkp[x ] == 0xff && \ |
338 | cmkp[x + cmk_linesize] == 0xff) \ |
339 | C_ARRAY_ADD(1); \ |
340 | cmkp += cmk_linesize; \ |
341 | } \ |
342 | } while (0) |
343 | |
344 | VERTICAL_HALF(1, yhalf); |
345 | |
346 | for (y = yhalf; y < heighta; y += yhalf) { |
347 | const int temp1 = (y / blocky) * xblocks4; |
348 | const int temp2 = ((y + yhalf) / blocky) * xblocks4; |
349 | |
350 | for (x = 0; x < widtha; x += xhalf) { |
351 | const uint8_t *cmkp_tmp = cmkp + x; |
352 | int u, v, sum = 0; |
353 | for (u = 0; u < yhalf; u++) { |
354 | for (v = 0; v < xhalf; v++) |
355 | if (cmkp_tmp[v - cmk_linesize] == 0xff && |
356 | cmkp_tmp[v ] == 0xff && |
357 | cmkp_tmp[v + cmk_linesize] == 0xff) |
358 | sum++; |
359 | cmkp_tmp += cmk_linesize; |
360 | } |
361 | if (sum) |
362 | C_ARRAY_ADD(sum); |
363 | } |
364 | |
365 | for (x = widtha; x < width; x++) { |
366 | const uint8_t *cmkp_tmp = cmkp + x; |
367 | int u, sum = 0; |
368 | for (u = 0; u < yhalf; u++) { |
369 | if (cmkp_tmp[-cmk_linesize] == 0xff && |
370 | cmkp_tmp[ 0] == 0xff && |
371 | cmkp_tmp[ cmk_linesize] == 0xff) |
372 | sum++; |
373 | cmkp_tmp += cmk_linesize; |
374 | } |
375 | if (sum) |
376 | C_ARRAY_ADD(sum); |
377 | } |
378 | |
379 | cmkp += cmk_linesize * yhalf; |
380 | } |
381 | |
382 | VERTICAL_HALF(heighta, height - 1); |
383 | |
384 | for (x = 0; x < arraysize; x++) |
385 | if (c_array[x] > max_v) |
386 | max_v = c_array[x]; |
387 | } |
388 | return max_v; |
389 | } |
390 | |
391 | // the secret is that tbuffer is an interlaced, offset subset of all the lines |
392 | static void build_abs_diff_mask(const uint8_t *prvp, int prv_linesize, |
393 | const uint8_t *nxtp, int nxt_linesize, |
394 | uint8_t *tbuffer, int tbuf_linesize, |
395 | int width, int height) |
396 | { |
397 | int y, x; |
398 | |
399 | prvp -= prv_linesize; |
400 | nxtp -= nxt_linesize; |
401 | for (y = 0; y < height; y++) { |
402 | for (x = 0; x < width; x++) |
403 | tbuffer[x] = FFABS(prvp[x] - nxtp[x]); |
404 | prvp += prv_linesize; |
405 | nxtp += nxt_linesize; |
406 | tbuffer += tbuf_linesize; |
407 | } |
408 | } |
409 | |
410 | /** |
411 | * Build a map over which pixels differ a lot/a little |
412 | */ |
413 | static void build_diff_map(FieldMatchContext *fm, |
414 | const uint8_t *prvp, int prv_linesize, |
415 | const uint8_t *nxtp, int nxt_linesize, |
416 | uint8_t *dstp, int dst_linesize, int height, |
417 | int width, int plane) |
418 | { |
419 | int x, y, u, diff, count; |
420 | int tpitch = plane ? fm->tpitchuv : fm->tpitchy; |
421 | const uint8_t *dp = fm->tbuffer + tpitch; |
422 | |
423 | build_abs_diff_mask(prvp, prv_linesize, nxtp, nxt_linesize, |
424 | fm->tbuffer, tpitch, width, height>>1); |
425 | |
426 | for (y = 2; y < height - 2; y += 2) { |
427 | for (x = 1; x < width - 1; x++) { |
428 | diff = dp[x]; |
429 | if (diff > 3) { |
430 | for (count = 0, u = x-1; u < x+2 && count < 2; u++) { |
431 | count += dp[u-tpitch] > 3; |
432 | count += dp[u ] > 3; |
433 | count += dp[u+tpitch] > 3; |
434 | } |
435 | if (count > 1) { |
436 | dstp[x] = 1; |
437 | if (diff > 19) { |
438 | int upper = 0, lower = 0; |
439 | for (count = 0, u = x-1; u < x+2 && count < 6; u++) { |
440 | if (dp[u-tpitch] > 19) { count++; upper = 1; } |
441 | if (dp[u ] > 19) count++; |
442 | if (dp[u+tpitch] > 19) { count++; lower = 1; } |
443 | } |
444 | if (count > 3) { |
445 | if (upper && lower) { |
446 | dstp[x] |= 1<<1; |
447 | } else { |
448 | int upper2 = 0, lower2 = 0; |
449 | for (u = FFMAX(x-4,0); u < FFMIN(x+5,width); u++) { |
450 | if (y != 2 && dp[u-2*tpitch] > 19) upper2 = 1; |
451 | if ( dp[u- tpitch] > 19) upper = 1; |
452 | if ( dp[u+ tpitch] > 19) lower = 1; |
453 | if (y != height-4 && dp[u+2*tpitch] > 19) lower2 = 1; |
454 | } |
455 | if ((upper && (lower || upper2)) || |
456 | (lower && (upper || lower2))) |
457 | dstp[x] |= 1<<1; |
458 | else if (count > 5) |
459 | dstp[x] |= 1<<2; |
460 | } |
461 | } |
462 | } |
463 | } |
464 | } |
465 | } |
466 | dp += tpitch; |
467 | dstp += dst_linesize; |
468 | } |
469 | } |
470 | |
471 | enum { mP, mC, mN, mB, mU }; |
472 | |
473 | static int get_field_base(int match, int field) |
474 | { |
475 | return match < 3 ? 2 - field : 1 + field; |
476 | } |
477 | |
478 | static AVFrame *select_frame(FieldMatchContext *fm, int match) |
479 | { |
480 | if (match == mP || match == mB) return fm->prv; |
481 | else if (match == mN || match == mU) return fm->nxt; |
482 | else /* match == mC */ return fm->src; |
483 | } |
484 | |
485 | static int compare_fields(FieldMatchContext *fm, int match1, int match2, int field) |
486 | { |
487 | int plane, ret; |
488 | uint64_t accumPc = 0, accumPm = 0, accumPml = 0; |
489 | uint64_t accumNc = 0, accumNm = 0, accumNml = 0; |
490 | int norm1, norm2, mtn1, mtn2; |
491 | float c1, c2, mr; |
492 | const AVFrame *src = fm->src; |
493 | |
494 | for (plane = 0; plane < (fm->mchroma ? 3 : 1); plane++) { |
495 | int x, y, temp1, temp2, fbase; |
496 | const AVFrame *prev, *next; |
497 | uint8_t *mapp = fm->map_data[plane]; |
498 | int map_linesize = fm->map_linesize[plane]; |
499 | const uint8_t *srcp = src->data[plane]; |
500 | const int src_linesize = src->linesize[plane]; |
501 | const int srcf_linesize = src_linesize << 1; |
502 | int prv_linesize, nxt_linesize; |
503 | int prvf_linesize, nxtf_linesize; |
504 | const int width = get_width (fm, src, plane); |
505 | const int height = get_height(fm, src, plane); |
506 | const int y0a = fm->y0 >> (plane != 0); |
507 | const int y1a = fm->y1 >> (plane != 0); |
508 | const int startx = (plane == 0 ? 8 : 4); |
509 | const int stopx = width - startx; |
510 | const uint8_t *srcpf, *srcf, *srcnf; |
511 | const uint8_t *prvpf, *prvnf, *nxtpf, *nxtnf; |
512 | |
513 | fill_buf(mapp, width, height, map_linesize, 0); |
514 | |
515 | /* match1 */ |
516 | fbase = get_field_base(match1, field); |
517 | srcf = srcp + (fbase + 1) * src_linesize; |
518 | srcpf = srcf - srcf_linesize; |
519 | srcnf = srcf + srcf_linesize; |
520 | mapp = mapp + fbase * map_linesize; |
521 | prev = select_frame(fm, match1); |
522 | prv_linesize = prev->linesize[plane]; |
523 | prvf_linesize = prv_linesize << 1; |
524 | prvpf = prev->data[plane] + fbase * prv_linesize; // previous frame, previous field |
525 | prvnf = prvpf + prvf_linesize; // previous frame, next field |
526 | |
527 | /* match2 */ |
528 | fbase = get_field_base(match2, field); |
529 | next = select_frame(fm, match2); |
530 | nxt_linesize = next->linesize[plane]; |
531 | nxtf_linesize = nxt_linesize << 1; |
532 | nxtpf = next->data[plane] + fbase * nxt_linesize; // next frame, previous field |
533 | nxtnf = nxtpf + nxtf_linesize; // next frame, next field |
534 | |
535 | map_linesize <<= 1; |
536 | if ((match1 >= 3 && field == 1) || (match1 < 3 && field != 1)) |
537 | build_diff_map(fm, prvpf, prvf_linesize, nxtpf, nxtf_linesize, |
538 | mapp, map_linesize, height, width, plane); |
539 | else |
540 | build_diff_map(fm, prvnf, prvf_linesize, nxtnf, nxtf_linesize, |
541 | mapp + map_linesize, map_linesize, height, width, plane); |
542 | |
543 | for (y = 2; y < height - 2; y += 2) { |
544 | if (y0a == y1a || y < y0a || y > y1a) { |
545 | for (x = startx; x < stopx; x++) { |
546 | if (mapp[x] > 0 || mapp[x + map_linesize] > 0) { |
547 | temp1 = srcpf[x] + (srcf[x] << 2) + srcnf[x]; // [1 4 1] |
548 | |
549 | temp2 = abs(3 * (prvpf[x] + prvnf[x]) - temp1); |
550 | if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1))) |
551 | accumPc += temp2; |
552 | if (temp2 > 42) { |
553 | if ((mapp[x]&2) || (mapp[x + map_linesize]&2)) |
554 | accumPm += temp2; |
555 | if ((mapp[x]&4) || (mapp[x + map_linesize]&4)) |
556 | accumPml += temp2; |
557 | } |
558 | |
559 | temp2 = abs(3 * (nxtpf[x] + nxtnf[x]) - temp1); |
560 | if (temp2 > 23 && ((mapp[x]&1) || (mapp[x + map_linesize]&1))) |
561 | accumNc += temp2; |
562 | if (temp2 > 42) { |
563 | if ((mapp[x]&2) || (mapp[x + map_linesize]&2)) |
564 | accumNm += temp2; |
565 | if ((mapp[x]&4) || (mapp[x + map_linesize]&4)) |
566 | accumNml += temp2; |
567 | } |
568 | } |
569 | } |
570 | } |
571 | prvpf += prvf_linesize; |
572 | prvnf += prvf_linesize; |
573 | srcpf += srcf_linesize; |
574 | srcf += srcf_linesize; |
575 | srcnf += srcf_linesize; |
576 | nxtpf += nxtf_linesize; |
577 | nxtnf += nxtf_linesize; |
578 | mapp += map_linesize; |
579 | } |
580 | } |
581 | |
582 | if (accumPm < 500 && accumNm < 500 && (accumPml >= 500 || accumNml >= 500) && |
583 | FFMAX(accumPml,accumNml) > 3*FFMIN(accumPml,accumNml)) { |
584 | accumPm = accumPml; |
585 | accumNm = accumNml; |
586 | } |
587 | |
588 | norm1 = (int)((accumPc / 6.0f) + 0.5f); |
589 | norm2 = (int)((accumNc / 6.0f) + 0.5f); |
590 | mtn1 = (int)((accumPm / 6.0f) + 0.5f); |
591 | mtn2 = (int)((accumNm / 6.0f) + 0.5f); |
592 | c1 = ((float)FFMAX(norm1,norm2)) / ((float)FFMAX(FFMIN(norm1,norm2),1)); |
593 | c2 = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMIN(mtn1, mtn2), 1)); |
594 | mr = ((float)FFMAX(mtn1, mtn2)) / ((float)FFMAX(FFMAX(norm1,norm2),1)); |
595 | if (((mtn1 >= 500 || mtn2 >= 500) && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1)) || |
596 | ((mtn1 >= 1000 || mtn2 >= 1000) && (mtn1*3 < mtn2*2 || mtn2*3 < mtn1*2)) || |
597 | ((mtn1 >= 2000 || mtn2 >= 2000) && (mtn1*5 < mtn2*4 || mtn2*5 < mtn1*4)) || |
598 | ((mtn1 >= 4000 || mtn2 >= 4000) && c2 > c1)) |
599 | ret = mtn1 > mtn2 ? match2 : match1; |
600 | else if (mr > 0.005 && FFMAX(mtn1, mtn2) > 150 && (mtn1*2 < mtn2*1 || mtn2*2 < mtn1*1)) |
601 | ret = mtn1 > mtn2 ? match2 : match1; |
602 | else |
603 | ret = norm1 > norm2 ? match2 : match1; |
604 | return ret; |
605 | } |
606 | |
607 | static void copy_fields(const FieldMatchContext *fm, AVFrame *dst, |
608 | const AVFrame *src, int field) |
609 | { |
610 | int plane; |
611 | for (plane = 0; plane < 4 && src->data[plane] && src->linesize[plane]; plane++) { |
612 | const int plane_h = get_height(fm, src, plane); |
613 | const int nb_copy_fields = (plane_h >> 1) + (field ? 0 : (plane_h & 1)); |
614 | av_image_copy_plane(dst->data[plane] + field*dst->linesize[plane], dst->linesize[plane] << 1, |
615 | src->data[plane] + field*src->linesize[plane], src->linesize[plane] << 1, |
616 | get_width(fm, src, plane), nb_copy_fields); |
617 | } |
618 | } |
619 | |
620 | static AVFrame *create_weave_frame(AVFilterContext *ctx, int match, int field, |
621 | const AVFrame *prv, AVFrame *src, const AVFrame *nxt) |
622 | { |
623 | AVFrame *dst; |
624 | FieldMatchContext *fm = ctx->priv; |
625 | |
626 | if (match == mC) { |
627 | dst = av_frame_clone(src); |
628 | } else { |
629 | AVFilterLink *outlink = ctx->outputs[0]; |
630 | |
631 | dst = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
632 | if (!dst) |
633 | return NULL; |
634 | av_frame_copy_props(dst, src); |
635 | |
636 | switch (match) { |
637 | case mP: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, prv, field); break; |
638 | case mN: copy_fields(fm, dst, src, 1-field); copy_fields(fm, dst, nxt, field); break; |
639 | case mB: copy_fields(fm, dst, src, field); copy_fields(fm, dst, prv, 1-field); break; |
640 | case mU: copy_fields(fm, dst, src, field); copy_fields(fm, dst, nxt, 1-field); break; |
641 | default: av_assert0(0); |
642 | } |
643 | } |
644 | return dst; |
645 | } |
646 | |
647 | static int checkmm(AVFilterContext *ctx, int *combs, int m1, int m2, |
648 | AVFrame **gen_frames, int field) |
649 | { |
650 | const FieldMatchContext *fm = ctx->priv; |
651 | |
652 | #define LOAD_COMB(mid) do { \ |
653 | if (combs[mid] < 0) { \ |
654 | if (!gen_frames[mid]) \ |
655 | gen_frames[mid] = create_weave_frame(ctx, mid, field, \ |
656 | fm->prv, fm->src, fm->nxt); \ |
657 | combs[mid] = calc_combed_score(fm, gen_frames[mid]); \ |
658 | } \ |
659 | } while (0) |
660 | |
661 | LOAD_COMB(m1); |
662 | LOAD_COMB(m2); |
663 | |
664 | if ((combs[m2] * 3 < combs[m1] || (combs[m2] * 2 < combs[m1] && combs[m1] > fm->combpel)) && |
665 | abs(combs[m2] - combs[m1]) >= 30 && combs[m2] < fm->combpel) |
666 | return m2; |
667 | else |
668 | return m1; |
669 | } |
670 | |
671 | static const int fxo0m[] = { mP, mC, mN, mB, mU }; |
672 | static const int fxo1m[] = { mN, mC, mP, mU, mB }; |
673 | |
674 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
675 | { |
676 | AVFilterContext *ctx = inlink->dst; |
677 | AVFilterLink *outlink = ctx->outputs[0]; |
678 | FieldMatchContext *fm = ctx->priv; |
679 | int combs[] = { -1, -1, -1, -1, -1 }; |
680 | int order, field, i, match, sc = 0; |
681 | const int *fxo; |
682 | AVFrame *gen_frames[] = { NULL, NULL, NULL, NULL, NULL }; |
683 | AVFrame *dst; |
684 | |
685 | /* update frames queue(s) */ |
686 | #define SLIDING_FRAME_WINDOW(prv, src, nxt) do { \ |
687 | if (prv != src) /* 2nd loop exception (1st has prv==src and we don't want to loose src) */ \ |
688 | av_frame_free(&prv); \ |
689 | prv = src; \ |
690 | src = nxt; \ |
691 | if (in) \ |
692 | nxt = in; \ |
693 | if (!prv) \ |
694 | prv = src; \ |
695 | if (!prv) /* received only one frame at that point */ \ |
696 | return 0; \ |
697 | av_assert0(prv && src && nxt); \ |
698 | } while (0) |
699 | if (FF_INLINK_IDX(inlink) == INPUT_MAIN) { |
700 | SLIDING_FRAME_WINDOW(fm->prv, fm->src, fm->nxt); |
701 | fm->got_frame[INPUT_MAIN] = 1; |
702 | } else { |
703 | SLIDING_FRAME_WINDOW(fm->prv2, fm->src2, fm->nxt2); |
704 | fm->got_frame[INPUT_CLEANSRC] = 1; |
705 | } |
706 | if (!fm->got_frame[INPUT_MAIN] || (fm->ppsrc && !fm->got_frame[INPUT_CLEANSRC])) |
707 | return 0; |
708 | fm->got_frame[INPUT_MAIN] = fm->got_frame[INPUT_CLEANSRC] = 0; |
709 | in = fm->src; |
710 | |
711 | /* parity */ |
712 | order = fm->order != FM_PARITY_AUTO ? fm->order : (in->interlaced_frame ? in->top_field_first : 1); |
713 | field = fm->field != FM_PARITY_AUTO ? fm->field : order; |
714 | av_assert0(order == 0 || order == 1 || field == 0 || field == 1); |
715 | fxo = field ^ order ? fxo1m : fxo0m; |
716 | |
717 | /* debug mode: we generate all the fields combinations and their associated |
718 | * combed score. XXX: inject as frame metadata? */ |
719 | if (fm->combdbg) { |
720 | for (i = 0; i < FF_ARRAY_ELEMS(combs); i++) { |
721 | if (i > mN && fm->combdbg == COMBDBG_PCN) |
722 | break; |
723 | gen_frames[i] = create_weave_frame(ctx, i, field, fm->prv, fm->src, fm->nxt); |
724 | if (!gen_frames[i]) |
725 | return AVERROR(ENOMEM); |
726 | combs[i] = calc_combed_score(fm, gen_frames[i]); |
727 | } |
728 | av_log(ctx, AV_LOG_INFO, "COMBS: %3d %3d %3d %3d %3d\n", |
729 | combs[0], combs[1], combs[2], combs[3], combs[4]); |
730 | } else { |
731 | gen_frames[mC] = av_frame_clone(fm->src); |
732 | if (!gen_frames[mC]) |
733 | return AVERROR(ENOMEM); |
734 | } |
735 | |
736 | /* p/c selection and optional 3-way p/c/n matches */ |
737 | match = compare_fields(fm, fxo[mC], fxo[mP], field); |
738 | if (fm->mode == MODE_PCN || fm->mode == MODE_PCN_UB) |
739 | match = compare_fields(fm, match, fxo[mN], field); |
740 | |
741 | /* scene change check */ |
742 | if (fm->combmatch == COMBMATCH_SC) { |
743 | if (fm->lastn == outlink->frame_count_in - 1) { |
744 | if (fm->lastscdiff > fm->scthresh) |
745 | sc = 1; |
746 | } else if (luma_abs_diff(fm->prv, fm->src) > fm->scthresh) { |
747 | sc = 1; |
748 | } |
749 | |
750 | if (!sc) { |
751 | fm->lastn = outlink->frame_count_in; |
752 | fm->lastscdiff = luma_abs_diff(fm->src, fm->nxt); |
753 | sc = fm->lastscdiff > fm->scthresh; |
754 | } |
755 | } |
756 | |
757 | if (fm->combmatch == COMBMATCH_FULL || (fm->combmatch == COMBMATCH_SC && sc)) { |
758 | switch (fm->mode) { |
759 | /* 2-way p/c matches */ |
760 | case MODE_PC: |
761 | match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field); |
762 | break; |
763 | case MODE_PC_N: |
764 | match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field); |
765 | break; |
766 | case MODE_PC_U: |
767 | match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field); |
768 | break; |
769 | case MODE_PC_N_UB: |
770 | match = checkmm(ctx, combs, match, fxo[mN], gen_frames, field); |
771 | match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field); |
772 | match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field); |
773 | break; |
774 | /* 3-way p/c/n matches */ |
775 | case MODE_PCN: |
776 | match = checkmm(ctx, combs, match, match == fxo[mP] ? fxo[mC] : fxo[mP], gen_frames, field); |
777 | break; |
778 | case MODE_PCN_UB: |
779 | match = checkmm(ctx, combs, match, fxo[mU], gen_frames, field); |
780 | match = checkmm(ctx, combs, match, fxo[mB], gen_frames, field); |
781 | break; |
782 | default: |
783 | av_assert0(0); |
784 | } |
785 | } |
786 | |
787 | /* get output frame and drop the others */ |
788 | if (fm->ppsrc) { |
789 | /* field matching was based on a filtered/post-processed input, we now |
790 | * pick the untouched fields from the clean source */ |
791 | dst = create_weave_frame(ctx, match, field, fm->prv2, fm->src2, fm->nxt2); |
792 | } else { |
793 | if (!gen_frames[match]) { // XXX: is that possible? |
794 | dst = create_weave_frame(ctx, match, field, fm->prv, fm->src, fm->nxt); |
795 | } else { |
796 | dst = gen_frames[match]; |
797 | gen_frames[match] = NULL; |
798 | } |
799 | } |
800 | if (!dst) |
801 | return AVERROR(ENOMEM); |
802 | for (i = 0; i < FF_ARRAY_ELEMS(gen_frames); i++) |
803 | av_frame_free(&gen_frames[i]); |
804 | |
805 | /* mark the frame we are unable to match properly as interlaced so a proper |
806 | * de-interlacer can take the relay */ |
807 | dst->interlaced_frame = combs[match] >= fm->combpel; |
808 | if (dst->interlaced_frame) { |
809 | av_log(ctx, AV_LOG_WARNING, "Frame #%"PRId64" at %s is still interlaced\n", |
810 | outlink->frame_count_in, av_ts2timestr(in->pts, &inlink->time_base)); |
811 | dst->top_field_first = field; |
812 | } |
813 | |
814 | av_log(ctx, AV_LOG_DEBUG, "SC:%d | COMBS: %3d %3d %3d %3d %3d (combpel=%d)" |
815 | " match=%d combed=%s\n", sc, combs[0], combs[1], combs[2], combs[3], combs[4], |
816 | fm->combpel, match, dst->interlaced_frame ? "YES" : "NO"); |
817 | |
818 | return ff_filter_frame(outlink, dst); |
819 | } |
820 | |
821 | static int request_inlink(AVFilterContext *ctx, int lid) |
822 | { |
823 | int ret = 0; |
824 | FieldMatchContext *fm = ctx->priv; |
825 | |
826 | if (!fm->got_frame[lid]) { |
827 | AVFilterLink *inlink = ctx->inputs[lid]; |
828 | ret = ff_request_frame(inlink); |
829 | if (ret == AVERROR_EOF) { // flushing |
830 | fm->eof |= 1 << lid; |
831 | ret = filter_frame(inlink, NULL); |
832 | } |
833 | } |
834 | return ret; |
835 | } |
836 | |
837 | static int request_frame(AVFilterLink *outlink) |
838 | { |
839 | int ret; |
840 | AVFilterContext *ctx = outlink->src; |
841 | FieldMatchContext *fm = ctx->priv; |
842 | const uint32_t eof_mask = 1<<INPUT_MAIN | fm->ppsrc<<INPUT_CLEANSRC; |
843 | |
844 | if ((fm->eof & eof_mask) == eof_mask) // flush done? |
845 | return AVERROR_EOF; |
846 | if ((ret = request_inlink(ctx, INPUT_MAIN)) < 0) |
847 | return ret; |
848 | if (fm->ppsrc && (ret = request_inlink(ctx, INPUT_CLEANSRC)) < 0) |
849 | return ret; |
850 | return 0; |
851 | } |
852 | |
853 | static int query_formats(AVFilterContext *ctx) |
854 | { |
855 | // TODO: second input source can support >8bit depth |
856 | static const enum AVPixelFormat pix_fmts[] = { |
857 | AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, |
858 | AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
859 | AV_PIX_FMT_NONE |
860 | }; |
861 | AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
862 | if (!fmts_list) |
863 | return AVERROR(ENOMEM); |
864 | return ff_set_common_formats(ctx, fmts_list); |
865 | } |
866 | |
867 | static int config_input(AVFilterLink *inlink) |
868 | { |
869 | int ret; |
870 | AVFilterContext *ctx = inlink->dst; |
871 | FieldMatchContext *fm = ctx->priv; |
872 | const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); |
873 | const int w = inlink->w; |
874 | const int h = inlink->h; |
875 | |
876 | fm->scthresh = (int64_t)((w * h * 255.0 * fm->scthresh_flt) / 100.0); |
877 | |
878 | if ((ret = av_image_alloc(fm->map_data, fm->map_linesize, w, h, inlink->format, 32)) < 0 || |
879 | (ret = av_image_alloc(fm->cmask_data, fm->cmask_linesize, w, h, inlink->format, 32)) < 0) |
880 | return ret; |
881 | |
882 | fm->hsub = pix_desc->log2_chroma_w; |
883 | fm->vsub = pix_desc->log2_chroma_h; |
884 | |
885 | fm->tpitchy = FFALIGN(w, 16); |
886 | fm->tpitchuv = FFALIGN(w >> 1, 16); |
887 | |
888 | fm->tbuffer = av_malloc(h/2 * fm->tpitchy); |
889 | fm->c_array = av_malloc((((w + fm->blockx/2)/fm->blockx)+1) * |
890 | (((h + fm->blocky/2)/fm->blocky)+1) * |
891 | 4 * sizeof(*fm->c_array)); |
892 | if (!fm->tbuffer || !fm->c_array) |
893 | return AVERROR(ENOMEM); |
894 | |
895 | return 0; |
896 | } |
897 | |
898 | static av_cold int fieldmatch_init(AVFilterContext *ctx) |
899 | { |
900 | const FieldMatchContext *fm = ctx->priv; |
901 | AVFilterPad pad = { |
902 | .name = av_strdup("main"), |
903 | .type = AVMEDIA_TYPE_VIDEO, |
904 | .filter_frame = filter_frame, |
905 | .config_props = config_input, |
906 | }; |
907 | |
908 | if (!pad.name) |
909 | return AVERROR(ENOMEM); |
910 | ff_insert_inpad(ctx, INPUT_MAIN, &pad); |
911 | |
912 | if (fm->ppsrc) { |
913 | pad.name = av_strdup("clean_src"); |
914 | pad.config_props = NULL; |
915 | if (!pad.name) |
916 | return AVERROR(ENOMEM); |
917 | ff_insert_inpad(ctx, INPUT_CLEANSRC, &pad); |
918 | } |
919 | |
920 | if ((fm->blockx & (fm->blockx - 1)) || |
921 | (fm->blocky & (fm->blocky - 1))) { |
922 | av_log(ctx, AV_LOG_ERROR, "blockx and blocky settings must be power of two\n"); |
923 | return AVERROR(EINVAL); |
924 | } |
925 | |
926 | if (fm->combpel > fm->blockx * fm->blocky) { |
927 | av_log(ctx, AV_LOG_ERROR, "Combed pixel should not be larger than blockx x blocky\n"); |
928 | return AVERROR(EINVAL); |
929 | } |
930 | |
931 | return 0; |
932 | } |
933 | |
934 | static av_cold void fieldmatch_uninit(AVFilterContext *ctx) |
935 | { |
936 | int i; |
937 | FieldMatchContext *fm = ctx->priv; |
938 | |
939 | if (fm->prv != fm->src) |
940 | av_frame_free(&fm->prv); |
941 | if (fm->nxt != fm->src) |
942 | av_frame_free(&fm->nxt); |
943 | av_frame_free(&fm->src); |
944 | av_freep(&fm->map_data[0]); |
945 | av_freep(&fm->cmask_data[0]); |
946 | av_freep(&fm->tbuffer); |
947 | av_freep(&fm->c_array); |
948 | for (i = 0; i < ctx->nb_inputs; i++) |
949 | av_freep(&ctx->input_pads[i].name); |
950 | } |
951 | |
952 | static int config_output(AVFilterLink *outlink) |
953 | { |
954 | AVFilterContext *ctx = outlink->src; |
955 | const FieldMatchContext *fm = ctx->priv; |
956 | const AVFilterLink *inlink = |
957 | ctx->inputs[fm->ppsrc ? INPUT_CLEANSRC : INPUT_MAIN]; |
958 | |
959 | outlink->time_base = inlink->time_base; |
960 | outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; |
961 | outlink->frame_rate = inlink->frame_rate; |
962 | outlink->w = inlink->w; |
963 | outlink->h = inlink->h; |
964 | return 0; |
965 | } |
966 | |
967 | static const AVFilterPad fieldmatch_outputs[] = { |
968 | { |
969 | .name = "default", |
970 | .type = AVMEDIA_TYPE_VIDEO, |
971 | .request_frame = request_frame, |
972 | .config_props = config_output, |
973 | }, |
974 | { NULL } |
975 | }; |
976 | |
977 | AVFilter ff_vf_fieldmatch = { |
978 | .name = "fieldmatch", |
979 | .description = NULL_IF_CONFIG_SMALL("Field matching for inverse telecine."), |
980 | .query_formats = query_formats, |
981 | .priv_size = sizeof(FieldMatchContext), |
982 | .init = fieldmatch_init, |
983 | .uninit = fieldmatch_uninit, |
984 | .inputs = NULL, |
985 | .outputs = fieldmatch_outputs, |
986 | .priv_class = &fieldmatch_class, |
987 | .flags = AVFILTER_FLAG_DYNAMIC_INPUTS, |
988 | }; |
989 |