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vf_tinterlace.c
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1 /*
2  * Copyright (c) 2017 Thomas Mundt <tmundt75@gmail.com>
3  * Copyright (c) 2011 Stefano Sabatini
4  * Copyright (c) 2010 Baptiste Coudurier
5  * Copyright (c) 2003 Michael Zucchi <notzed@ximian.com>
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License along
20  * with FFmpeg if not, write to the Free Software Foundation, Inc.,
21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22  */
23 
24 /**
25  * @file
26  * temporal field interlace filter, ported from MPlayer/libmpcodecs
27  */
28 
29 #include "libavutil/opt.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/avassert.h"
32 #include "avfilter.h"
33 #include "internal.h"
34 #include "tinterlace.h"
35 
36 #define OFFSET(x) offsetof(TInterlaceContext, x)
37 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
38 
39 static const AVOption tinterlace_options[] = {
40  {"mode", "select interlace mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_MERGE}, 0, MODE_NB-1, FLAGS, "mode"},
41  {"merge", "merge fields", 0, AV_OPT_TYPE_CONST, {.i64=MODE_MERGE}, INT_MIN, INT_MAX, FLAGS, "mode"},
42  {"drop_even", "drop even fields", 0, AV_OPT_TYPE_CONST, {.i64=MODE_DROP_EVEN}, INT_MIN, INT_MAX, FLAGS, "mode"},
43  {"drop_odd", "drop odd fields", 0, AV_OPT_TYPE_CONST, {.i64=MODE_DROP_ODD}, INT_MIN, INT_MAX, FLAGS, "mode"},
44  {"pad", "pad alternate lines with black", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PAD}, INT_MIN, INT_MAX, FLAGS, "mode"},
45  {"interleave_top", "interleave top and bottom fields", 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE_TOP}, INT_MIN, INT_MAX, FLAGS, "mode"},
46  {"interleave_bottom", "interleave bottom and top fields", 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "mode"},
47  {"interlacex2", "interlace fields from two consecutive frames", 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLACEX2}, INT_MIN, INT_MAX, FLAGS, "mode"},
48  {"mergex2", "merge fields keeping same frame rate", 0, AV_OPT_TYPE_CONST, {.i64=MODE_MERGEX2}, INT_MIN, INT_MAX, FLAGS, "mode"},
49 
50  {"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, INT_MAX, 0, "flags" },
51  {"low_pass_filter", "enable vertical low-pass filter", 0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_VLPF}, INT_MIN, INT_MAX, FLAGS, "flags" },
52  {"vlpf", "enable vertical low-pass filter", 0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_VLPF}, INT_MIN, INT_MAX, FLAGS, "flags" },
53  {"complex_filter", "enable complex vertical low-pass filter", 0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_CVLPF},INT_MIN, INT_MAX, FLAGS, "flags" },
54  {"cvlpf", "enable complex vertical low-pass filter", 0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_CVLPF},INT_MIN, INT_MAX, FLAGS, "flags" },
55  {"exact_tb", "force a timebase which can represent timestamps exactly", 0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_EXACT_TB}, INT_MIN, INT_MAX, FLAGS, "flags" },
56 
57  {NULL}
58 };
59 
60 AVFILTER_DEFINE_CLASS(tinterlace);
61 
62 #define FULL_SCALE_YUVJ_FORMATS \
63  AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P
64 
65 static const enum AVPixelFormat full_scale_yuvj_pix_fmts[] = {
67 };
68 
69 static const AVRational standard_tbs[] = {
70  {1, 25},
71  {1, 30},
72  {1001, 30000},
73 };
74 
76 {
77  static const enum AVPixelFormat pix_fmts[] = {
84  };
85 
86  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
87  if (!fmts_list)
88  return AVERROR(ENOMEM);
89  return ff_set_common_formats(ctx, fmts_list);
90 }
91 
92 static void lowpass_line_c(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp,
93  ptrdiff_t mref, ptrdiff_t pref)
94 {
95  const uint8_t *srcp_above = srcp + mref;
96  const uint8_t *srcp_below = srcp + pref;
97  int i;
98  for (i = 0; i < width; i++) {
99  // this calculation is an integer representation of
100  // '0.5 * current + 0.25 * above + 0.25 * below'
101  // '1 +' is for rounding.
102  dstp[i] = (1 + srcp[i] + srcp[i] + srcp_above[i] + srcp_below[i]) >> 2;
103  }
104 }
105 
106 static void lowpass_line_complex_c(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp,
107  ptrdiff_t mref, ptrdiff_t pref)
108 {
109  const uint8_t *srcp_above = srcp + mref;
110  const uint8_t *srcp_below = srcp + pref;
111  const uint8_t *srcp_above2 = srcp + mref * 2;
112  const uint8_t *srcp_below2 = srcp + pref * 2;
113  int i;
114  for (i = 0; i < width; i++) {
115  // this calculation is an integer representation of
116  // '0.75 * current + 0.25 * above + 0.25 * below - 0.125 * above2 - 0.125 * below2'
117  // '4 +' is for rounding.
118  dstp[i] = av_clip_uint8((4 + (srcp[i] << 2)
119  + ((srcp[i] + srcp_above[i] + srcp_below[i]) << 1)
120  - srcp_above2[i] - srcp_below2[i]) >> 3);
121  }
122 }
123 
125 {
126  TInterlaceContext *tinterlace = ctx->priv;
127 
128  av_frame_free(&tinterlace->cur );
129  av_frame_free(&tinterlace->next);
130  av_freep(&tinterlace->black_data[0]);
131 }
132 
133 static int config_out_props(AVFilterLink *outlink)
134 {
135  AVFilterContext *ctx = outlink->src;
136  AVFilterLink *inlink = outlink->src->inputs[0];
138  TInterlaceContext *tinterlace = ctx->priv;
139  int i;
140 
141  tinterlace->vsub = desc->log2_chroma_h;
142  outlink->w = inlink->w;
143  outlink->h = tinterlace->mode == MODE_MERGE || tinterlace->mode == MODE_PAD || tinterlace->mode == MODE_MERGEX2?
144  inlink->h*2 : inlink->h;
145  if (tinterlace->mode == MODE_MERGE || tinterlace->mode == MODE_PAD || tinterlace->mode == MODE_MERGEX2)
147  av_make_q(2, 1));
148 
149  if (tinterlace->mode == MODE_PAD) {
150  uint8_t black[4] = { 16, 128, 128, 16 };
151  int i, ret;
153  black[0] = black[3] = 0;
154  ret = av_image_alloc(tinterlace->black_data, tinterlace->black_linesize,
155  outlink->w, outlink->h, outlink->format, 16);
156  if (ret < 0)
157  return ret;
158 
159  /* fill black picture with black */
160  for (i = 0; i < 4 && tinterlace->black_data[i]; i++) {
161  int h = i == 1 || i == 2 ? AV_CEIL_RSHIFT(outlink->h, desc->log2_chroma_h) : outlink->h;
162  memset(tinterlace->black_data[i], black[i],
163  tinterlace->black_linesize[i] * h);
164  }
165  }
166  if ((tinterlace->flags & TINTERLACE_FLAG_VLPF
167  || tinterlace->flags & TINTERLACE_FLAG_CVLPF)
168  && !(tinterlace->mode == MODE_INTERLEAVE_TOP
169  || tinterlace->mode == MODE_INTERLEAVE_BOTTOM)) {
170  av_log(ctx, AV_LOG_WARNING, "low_pass_filter flags ignored with mode %d\n",
171  tinterlace->mode);
172  tinterlace->flags &= ~TINTERLACE_FLAG_VLPF;
173  tinterlace->flags &= ~TINTERLACE_FLAG_CVLPF;
174  }
175  tinterlace->preout_time_base = inlink->time_base;
176  if (tinterlace->mode == MODE_INTERLACEX2) {
177  tinterlace->preout_time_base.den *= 2;
178  outlink->frame_rate = av_mul_q(inlink->frame_rate, (AVRational){2,1});
179  outlink->time_base = av_mul_q(inlink->time_base , (AVRational){1,2});
180  } else if (tinterlace->mode == MODE_MERGEX2) {
181  outlink->frame_rate = inlink->frame_rate;
182  outlink->time_base = inlink->time_base;
183  } else if (tinterlace->mode != MODE_PAD) {
184  outlink->frame_rate = av_mul_q(inlink->frame_rate, (AVRational){1,2});
185  outlink->time_base = av_mul_q(inlink->time_base , (AVRational){2,1});
186  }
187 
188  for (i = 0; i<FF_ARRAY_ELEMS(standard_tbs); i++){
189  if (!av_cmp_q(standard_tbs[i], outlink->time_base))
190  break;
191  }
192  if (i == FF_ARRAY_ELEMS(standard_tbs) ||
193  (tinterlace->flags & TINTERLACE_FLAG_EXACT_TB))
194  outlink->time_base = tinterlace->preout_time_base;
195 
196  if (tinterlace->flags & TINTERLACE_FLAG_CVLPF) {
197  tinterlace->lowpass_line = lowpass_line_complex_c;
198  if (ARCH_X86)
199  ff_tinterlace_init_x86(tinterlace);
200  } else if (tinterlace->flags & TINTERLACE_FLAG_VLPF) {
201  tinterlace->lowpass_line = lowpass_line_c;
202  if (ARCH_X86)
203  ff_tinterlace_init_x86(tinterlace);
204  }
205 
206  av_log(ctx, AV_LOG_VERBOSE, "mode:%d filter:%s h:%d -> h:%d\n", tinterlace->mode,
207  (tinterlace->flags & TINTERLACE_FLAG_CVLPF) ? "complex" :
208  (tinterlace->flags & TINTERLACE_FLAG_VLPF) ? "linear" : "off",
209  inlink->h, outlink->h);
210 
211  return 0;
212 }
213 
214 #define FIELD_UPPER 0
215 #define FIELD_LOWER 1
216 #define FIELD_UPPER_AND_LOWER 2
217 
218 /**
219  * Copy picture field from src to dst.
220  *
221  * @param src_field copy from upper, lower field or both
222  * @param interleave leave a padding line between each copied line
223  * @param dst_field copy to upper or lower field,
224  * only meaningful when interleave is selected
225  * @param flags context flags
226  */
227 static inline
229  uint8_t *dst[4], int dst_linesize[4],
230  const uint8_t *src[4], int src_linesize[4],
231  enum AVPixelFormat format, int w, int src_h,
232  int src_field, int interleave, int dst_field,
233  int flags)
234 {
236  int hsub = desc->log2_chroma_w;
237  int plane, vsub = desc->log2_chroma_h;
238  int k = src_field == FIELD_UPPER_AND_LOWER ? 1 : 2;
239  int h;
240 
241  for (plane = 0; plane < desc->nb_components; plane++) {
242  int lines = plane == 1 || plane == 2 ? AV_CEIL_RSHIFT(src_h, vsub) : src_h;
243  int cols = plane == 1 || plane == 2 ? AV_CEIL_RSHIFT( w, hsub) : w;
244  uint8_t *dstp = dst[plane];
245  const uint8_t *srcp = src[plane];
246 
247  lines = (lines + (src_field == FIELD_UPPER)) / k;
248  if (src_field == FIELD_LOWER)
249  srcp += src_linesize[plane];
250  if (interleave && dst_field == FIELD_LOWER)
251  dstp += dst_linesize[plane];
252  // Low-pass filtering is required when creating an interlaced destination from
253  // a progressive source which contains high-frequency vertical detail.
254  // Filtering will reduce interlace 'twitter' and Moire patterning.
255  if (flags & TINTERLACE_FLAG_CVLPF) {
256  int srcp_linesize = src_linesize[plane] * k;
257  int dstp_linesize = dst_linesize[plane] * (interleave ? 2 : 1);
258  for (h = lines; h > 0; h--) {
259  ptrdiff_t pref = src_linesize[plane];
260  ptrdiff_t mref = -pref;
261  if (h >= (lines - 1)) mref = 0;
262  else if (h <= 2) pref = 0;
263 
264  tinterlace->lowpass_line(dstp, cols, srcp, mref, pref);
265  dstp += dstp_linesize;
266  srcp += srcp_linesize;
267  }
268  } else if (flags & TINTERLACE_FLAG_VLPF) {
269  int srcp_linesize = src_linesize[plane] * k;
270  int dstp_linesize = dst_linesize[plane] * (interleave ? 2 : 1);
271  for (h = lines; h > 0; h--) {
272  ptrdiff_t pref = src_linesize[plane];
273  ptrdiff_t mref = -pref;
274  if (h == lines) mref = 0; // there is no line above
275  else if (h == 1) pref = 0; // there is no line below
276 
277  tinterlace->lowpass_line(dstp, cols, srcp, mref, pref);
278  dstp += dstp_linesize;
279  srcp += srcp_linesize;
280  }
281  } else {
282  av_image_copy_plane(dstp, dst_linesize[plane] * (interleave ? 2 : 1),
283  srcp, src_linesize[plane]*k, cols, lines);
284  }
285  }
286 }
287 
288 static int filter_frame(AVFilterLink *inlink, AVFrame *picref)
289 {
290  AVFilterContext *ctx = inlink->dst;
291  AVFilterLink *outlink = ctx->outputs[0];
292  TInterlaceContext *tinterlace = ctx->priv;
293  AVFrame *cur, *next, *out;
294  int field, tff, ret;
295 
296  av_frame_free(&tinterlace->cur);
297  tinterlace->cur = tinterlace->next;
298  tinterlace->next = picref;
299 
300  cur = tinterlace->cur;
301  next = tinterlace->next;
302  /* we need at least two frames */
303  if (!tinterlace->cur)
304  return 0;
305 
306  switch (tinterlace->mode) {
307  case MODE_MERGEX2: /* move the odd frame into the upper field of the new image, even into
308  * the lower field, generating a double-height video at same framerate */
309  case MODE_MERGE: /* move the odd frame into the upper field of the new image, even into
310  * the lower field, generating a double-height video at half framerate */
311  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
312  if (!out)
313  return AVERROR(ENOMEM);
314  av_frame_copy_props(out, cur);
315  out->height = outlink->h;
316  out->interlaced_frame = 1;
317  out->top_field_first = 1;
319 
320  /* write odd frame lines into the upper field of the new frame */
321  copy_picture_field(tinterlace, out->data, out->linesize,
322  (const uint8_t **)cur->data, cur->linesize,
323  inlink->format, inlink->w, inlink->h,
324  FIELD_UPPER_AND_LOWER, 1, tinterlace->mode == MODE_MERGEX2 ? inlink->frame_count_out & 1 ? FIELD_LOWER : FIELD_UPPER : FIELD_UPPER, tinterlace->flags);
325  /* write even frame lines into the lower field of the new frame */
326  copy_picture_field(tinterlace, out->data, out->linesize,
327  (const uint8_t **)next->data, next->linesize,
328  inlink->format, inlink->w, inlink->h,
329  FIELD_UPPER_AND_LOWER, 1, tinterlace->mode == MODE_MERGEX2 ? inlink->frame_count_out & 1 ? FIELD_UPPER : FIELD_LOWER : FIELD_LOWER, tinterlace->flags);
330  if (tinterlace->mode != MODE_MERGEX2)
331  av_frame_free(&tinterlace->next);
332  break;
333 
334  case MODE_DROP_ODD: /* only output even frames, odd frames are dropped; height unchanged, half framerate */
335  case MODE_DROP_EVEN: /* only output odd frames, even frames are dropped; height unchanged, half framerate */
336  out = av_frame_clone(tinterlace->mode == MODE_DROP_EVEN ? cur : next);
337  if (!out)
338  return AVERROR(ENOMEM);
339  av_frame_free(&tinterlace->next);
340  break;
341 
342  case MODE_PAD: /* expand each frame to double height, but pad alternate
343  * lines with black; framerate unchanged */
344  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
345  if (!out)
346  return AVERROR(ENOMEM);
347  av_frame_copy_props(out, cur);
348  out->height = outlink->h;
350 
351  field = (1 + tinterlace->frame) & 1 ? FIELD_UPPER : FIELD_LOWER;
352  /* copy upper and lower fields */
353  copy_picture_field(tinterlace, out->data, out->linesize,
354  (const uint8_t **)cur->data, cur->linesize,
355  inlink->format, inlink->w, inlink->h,
356  FIELD_UPPER_AND_LOWER, 1, field, tinterlace->flags);
357  /* pad with black the other field */
358  copy_picture_field(tinterlace, out->data, out->linesize,
359  (const uint8_t **)tinterlace->black_data, tinterlace->black_linesize,
360  inlink->format, inlink->w, inlink->h,
361  FIELD_UPPER_AND_LOWER, 1, !field, tinterlace->flags);
362  break;
363 
364  /* interleave upper/lower lines from odd frames with lower/upper lines from even frames,
365  * halving the frame rate and preserving image height */
366  case MODE_INTERLEAVE_TOP: /* top field first */
367  case MODE_INTERLEAVE_BOTTOM: /* bottom field first */
368  tff = tinterlace->mode == MODE_INTERLEAVE_TOP;
369  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
370  if (!out)
371  return AVERROR(ENOMEM);
372  av_frame_copy_props(out, cur);
373  out->interlaced_frame = 1;
374  out->top_field_first = tff;
375 
376  /* copy upper/lower field from cur */
377  copy_picture_field(tinterlace, out->data, out->linesize,
378  (const uint8_t **)cur->data, cur->linesize,
379  inlink->format, inlink->w, inlink->h,
380  tff ? FIELD_UPPER : FIELD_LOWER, 1, tff ? FIELD_UPPER : FIELD_LOWER,
381  tinterlace->flags);
382  /* copy lower/upper field from next */
383  copy_picture_field(tinterlace, out->data, out->linesize,
384  (const uint8_t **)next->data, next->linesize,
385  inlink->format, inlink->w, inlink->h,
386  tff ? FIELD_LOWER : FIELD_UPPER, 1, tff ? FIELD_LOWER : FIELD_UPPER,
387  tinterlace->flags);
388  av_frame_free(&tinterlace->next);
389  break;
390  case MODE_INTERLACEX2: /* re-interlace preserving image height, double frame rate */
391  /* output current frame first */
392  out = av_frame_clone(cur);
393  if (!out)
394  return AVERROR(ENOMEM);
395  out->interlaced_frame = 1;
396  if (cur->pts != AV_NOPTS_VALUE)
397  out->pts = cur->pts*2;
398 
399  out->pts = av_rescale_q(out->pts, tinterlace->preout_time_base, outlink->time_base);
400  if ((ret = ff_filter_frame(outlink, out)) < 0)
401  return ret;
402 
403  /* output mix of current and next frame */
404  tff = next->top_field_first;
405  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
406  if (!out)
407  return AVERROR(ENOMEM);
408  av_frame_copy_props(out, next);
409  out->interlaced_frame = 1;
410  out->top_field_first = !tff;
411 
412  if (next->pts != AV_NOPTS_VALUE && cur->pts != AV_NOPTS_VALUE)
413  out->pts = cur->pts + next->pts;
414  else
415  out->pts = AV_NOPTS_VALUE;
416  /* write current frame second field lines into the second field of the new frame */
417  copy_picture_field(tinterlace, out->data, out->linesize,
418  (const uint8_t **)cur->data, cur->linesize,
419  inlink->format, inlink->w, inlink->h,
420  tff ? FIELD_LOWER : FIELD_UPPER, 1, tff ? FIELD_LOWER : FIELD_UPPER,
421  tinterlace->flags);
422  /* write next frame first field lines into the first field of the new frame */
423  copy_picture_field(tinterlace, out->data, out->linesize,
424  (const uint8_t **)next->data, next->linesize,
425  inlink->format, inlink->w, inlink->h,
426  tff ? FIELD_UPPER : FIELD_LOWER, 1, tff ? FIELD_UPPER : FIELD_LOWER,
427  tinterlace->flags);
428  break;
429  default:
430  av_assert0(0);
431  }
432 
433  out->pts = av_rescale_q(out->pts, tinterlace->preout_time_base, outlink->time_base);
434  ret = ff_filter_frame(outlink, out);
435  tinterlace->frame++;
436 
437  return ret;
438 }
439 
440 static const AVFilterPad tinterlace_inputs[] = {
441  {
442  .name = "default",
443  .type = AVMEDIA_TYPE_VIDEO,
444  .filter_frame = filter_frame,
445  },
446  { NULL }
447 };
448 
449 static const AVFilterPad tinterlace_outputs[] = {
450  {
451  .name = "default",
452  .type = AVMEDIA_TYPE_VIDEO,
453  .config_props = config_out_props,
454  },
455  { NULL }
456 };
457 
459  .name = "tinterlace",
460  .description = NULL_IF_CONFIG_SMALL("Perform temporal field interlacing."),
461  .priv_size = sizeof(TInterlaceContext),
462  .uninit = uninit,
464  .inputs = tinterlace_inputs,
465  .outputs = tinterlace_outputs,
466  .priv_class = &tinterlace_class,
467 };
int plane
Definition: avisynth_c.h:422
#define NULL
Definition: coverity.c:32
static enum AVPixelFormat full_scale_yuvj_pix_fmts[]
Definition: vf_tinterlace.c:65
static int query_formats(AVFilterContext *ctx)
Definition: vf_tinterlace.c:75
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2415
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
#define OFFSET(x)
Definition: vf_tinterlace.c:36
AVOption.
Definition: opt.h:246
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define TINTERLACE_FLAG_CVLPF
Definition: tinterlace.h:35
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:60
AVFrame * next
Definition: tinterlace.h:57
int av_image_alloc(uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)
Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...
Definition: imgutils.c:192
#define FIELD_LOWER
int mode
TInterlaceMode, interlace mode selected.
Definition: tinterlace.h:51
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:92
#define src
Definition: vp8dsp.c:254
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
int flags
flags affecting interlacing algorithm
Definition: tinterlace.h:53
AVFilter ff_vf_tinterlace
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define FULL_SCALE_YUVJ_FORMATS
Definition: vf_tinterlace.c:62
BYTE int const BYTE * srcp
Definition: avisynth_c.h:813
const char * name
Pad name.
Definition: internal.h:59
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:331
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1125
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
uint8_t
#define av_cold
Definition: attributes.h:82
static const AVOption tinterlace_options[]
Definition: vf_tinterlace.c:39
temporal field interlace filter, ported from MPlayer/libmpcodecs
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:294
int frame
number of the output frame
Definition: tinterlace.h:54
int black_linesize[4]
Definition: tinterlace.h:59
static int flags
Definition: log.c:57
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
int ff_fmt_is_in(int fmt, const int *fmts)
Tell if an integer is contained in the provided -1-terminated list of integers.
Definition: formats.c:254
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:53
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:188
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:568
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void ff_tinterlace_init_x86(TInterlaceContext *interlace)
int vsub
chroma vertical subsampling
Definition: tinterlace.h:55
BYTE * dstp
Definition: avisynth_c.h:813
#define AVERROR(e)
Definition: error.h:43
#define TINTERLACE_FLAG_VLPF
Definition: tinterlace.h:33
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
void * priv
private data for use by the filter
Definition: avfilter.h:338
#define FLAGS
Definition: vf_tinterlace.c:37
uint16_t width
Definition: gdv.c:47
static void copy_picture_field(TInterlaceContext *tinterlace, uint8_t *dst[4], int dst_linesize[4], const uint8_t *src[4], int src_linesize[4], enum AVPixelFormat format, int w, int src_h, int src_field, int interleave, int dst_field, int flags)
Copy picture field from src to dst.
simple assert() macros that are a bit more flexible than ISO C assert().
AVFILTER_DEFINE_CLASS(tinterlace)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define FIELD_UPPER
static av_cold void uninit(AVFilterContext *ctx)
AVFormatContext * ctx
Definition: movenc.c:48
static const AVFilterPad tinterlace_outputs[]
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:389
static int filter_frame(AVFilterLink *inlink, AVFrame *picref)
static const AVRational standard_tbs[]
Definition: vf_tinterlace.c:69
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:489
#define FF_ARRAY_ELEMS(a)
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:379
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:189
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:289
uint8_t * black_data[4]
buffer used to fill padded lines
Definition: tinterlace.h:58
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
static const char * format
Definition: movenc.c:47
Filter definition.
Definition: avfilter.h:144
Rational number (pair of numerator and denominator).
Definition: rational.h:58
const char * name
Filter name.
Definition: avfilter.h:148
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:335
static void interleave(short *output, short **input, int channels, int samples)
Definition: resample.c:161
void(* lowpass_line)(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp, ptrdiff_t mref, ptrdiff_t pref)
Definition: tinterlace.h:60
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AVFrame * cur
Definition: tinterlace.h:56
static const AVFilterPad tinterlace_inputs[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
static int config_out_props(AVFilterLink *outlink)
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
int den
Denominator.
Definition: rational.h:60
#define TINTERLACE_FLAG_EXACT_TB
Definition: tinterlace.h:34
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:353
A list of supported formats for one end of a filter link.
Definition: formats.h:64
static void lowpass_line_complex_c(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp, ptrdiff_t mref, ptrdiff_t pref)
An instance of a filter.
Definition: avfilter.h:323
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
int height
Definition: frame.h:259
FILE * out
Definition: movenc.c:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:337
internal API functions
#define FIELD_UPPER_AND_LOWER
static void lowpass_line_c(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp, ptrdiff_t mref, ptrdiff_t pref)
Definition: vf_tinterlace.c:92
AVRational preout_time_base
Definition: tinterlace.h:52
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:600
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58