FFmpeg  4.3.8
vf_delogo.c
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1 /*
2  * Copyright (c) 2002 Jindrich Makovicka <makovick@gmail.com>
3  * Copyright (c) 2011 Stefano Sabatini
4  * Copyright (c) 2013, 2015 Jean Delvare <jdelvare@suse.com>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 /**
24  * @file
25  * A very simple tv station logo remover
26  * Originally imported from MPlayer libmpcodecs/vf_delogo.c,
27  * the algorithm was later improved.
28  */
29 
30 #include "libavutil/common.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixdesc.h"
34 #include "libavutil/eval.h"
35 #include "avfilter.h"
36 #include "formats.h"
37 #include "internal.h"
38 #include "video.h"
39 static const char * const var_names[] = {
40  "x",
41  "y",
42  "w",
43  "h",
44  "n", ///< number of frame
45  "t", ///< timestamp expressed in seconds
46  NULL
47 };
48 
49 enum var_name {
57 };
58 #define TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))
59 
60 static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx)
61 {
62  int ret;
63  AVExpr *old = NULL;
64 
65  if (*pexpr)
66  old = *pexpr;
67  ret = av_expr_parse(pexpr, expr, var_names, NULL, NULL, NULL, NULL, 0, log_ctx);
68  if (ret < 0) {
69  av_log(log_ctx, AV_LOG_ERROR,
70  "Error when parsing the expression '%s' for %s\n",
71  expr, option);
72  *pexpr = old;
73  return ret;
74  }
75 
76  av_expr_free(old);
77  return 0;
78 }
79 
80 
81 /**
82  * Apply a simple delogo algorithm to the image in src and put the
83  * result in dst.
84  *
85  * The algorithm is only applied to the region specified by the logo
86  * parameters.
87  *
88  * @param w width of the input image
89  * @param h height of the input image
90  * @param logo_x x coordinate of the top left corner of the logo region
91  * @param logo_y y coordinate of the top left corner of the logo region
92  * @param logo_w width of the logo
93  * @param logo_h height of the logo
94  * @param band the size of the band around the processed area
95  * @param show show a rectangle around the processed area, useful for
96  * parameters tweaking
97  * @param direct if non-zero perform in-place processing
98  */
99 static void apply_delogo(uint8_t *dst, int dst_linesize,
100  uint8_t *src, int src_linesize,
101  int w, int h, AVRational sar,
102  int logo_x, int logo_y, int logo_w, int logo_h,
103  unsigned int band, int show, int direct)
104 {
105  int x, y;
106  uint64_t interp, weightl, weightr, weightt, weightb, weight;
107  uint8_t *xdst, *xsrc;
108 
109  uint8_t *topleft, *botleft, *topright;
110  unsigned int left_sample, right_sample;
111  int xclipl, xclipr, yclipt, yclipb;
112  int logo_x1, logo_x2, logo_y1, logo_y2;
113 
114  xclipl = FFMAX(-logo_x, 0);
115  xclipr = FFMAX(logo_x+logo_w-w, 0);
116  yclipt = FFMAX(-logo_y, 0);
117  yclipb = FFMAX(logo_y+logo_h-h, 0);
118 
119  logo_x1 = logo_x + xclipl;
120  logo_x2 = logo_x + logo_w - xclipr - 1;
121  logo_y1 = logo_y + yclipt;
122  logo_y2 = logo_y + logo_h - yclipb - 1;
123 
124  topleft = src+logo_y1 * src_linesize+logo_x1;
125  topright = src+logo_y1 * src_linesize+logo_x2;
126  botleft = src+logo_y2 * src_linesize+logo_x1;
127 
128  if (!direct)
129  av_image_copy_plane(dst, dst_linesize, src, src_linesize, w, h);
130 
131  dst += (logo_y1 + 1) * dst_linesize;
132  src += (logo_y1 + 1) * src_linesize;
133 
134  for (y = logo_y1+1; y < logo_y2; y++) {
135  left_sample = topleft[src_linesize*(y-logo_y1)] +
136  topleft[src_linesize*(y-logo_y1-1)] +
137  topleft[src_linesize*(y-logo_y1+1)];
138  right_sample = topright[src_linesize*(y-logo_y1)] +
139  topright[src_linesize*(y-logo_y1-1)] +
140  topright[src_linesize*(y-logo_y1+1)];
141 
142  for (x = logo_x1+1,
143  xdst = dst+logo_x1+1,
144  xsrc = src+logo_x1+1; x < logo_x2; x++, xdst++, xsrc++) {
145 
146  if (show && (y == logo_y1+1 || y == logo_y2-1 ||
147  x == logo_x1+1 || x == logo_x2-1)) {
148  *xdst = 0;
149  continue;
150  }
151 
152  /* Weighted interpolation based on relative distances, taking SAR into account */
153  weightl = (uint64_t) (logo_x2-x) * (y-logo_y1) * (logo_y2-y) * sar.den;
154  weightr = (uint64_t)(x-logo_x1) * (y-logo_y1) * (logo_y2-y) * sar.den;
155  weightt = (uint64_t)(x-logo_x1) * (logo_x2-x) * (logo_y2-y) * sar.num;
156  weightb = (uint64_t)(x-logo_x1) * (logo_x2-x) * (y-logo_y1) * sar.num;
157 
158  interp =
159  left_sample * weightl
160  +
161  right_sample * weightr
162  +
163  (topleft[x-logo_x1] +
164  topleft[x-logo_x1-1] +
165  topleft[x-logo_x1+1]) * weightt
166  +
167  (botleft[x-logo_x1] +
168  botleft[x-logo_x1-1] +
169  botleft[x-logo_x1+1]) * weightb;
170  weight = (weightl + weightr + weightt + weightb) * 3U;
171  interp = (interp + (weight >> 1)) / weight;
172 
173  if (y >= logo_y+band && y < logo_y+logo_h-band &&
174  x >= logo_x+band && x < logo_x+logo_w-band) {
175  *xdst = interp;
176  } else {
177  unsigned dist = 0;
178 
179  if (x < logo_x+band)
180  dist = FFMAX(dist, logo_x-x+band);
181  else if (x >= logo_x+logo_w-band)
182  dist = FFMAX(dist, x-(logo_x+logo_w-1-band));
183 
184  if (y < logo_y+band)
185  dist = FFMAX(dist, logo_y-y+band);
186  else if (y >= logo_y+logo_h-band)
187  dist = FFMAX(dist, y-(logo_y+logo_h-1-band));
188 
189  *xdst = (*xsrc*dist + interp*(band-dist))/band;
190  }
191  }
192 
193  dst += dst_linesize;
194  src += src_linesize;
195  }
196 }
197 
198 typedef struct DelogoContext {
199  const AVClass *class;
200  int x, y, w, h, band, show;
201  char *x_expr, *y_expr, *w_expr, *h_expr;
204 } DelogoContext;
205 
206 #define OFFSET(x) offsetof(DelogoContext, x)
207 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
208 
209 static const AVOption delogo_options[]= {
210  { "x", "set logo x position", OFFSET(x_expr), AV_OPT_TYPE_STRING, { .str = "-1" }, 0, 0, FLAGS },
211  { "y", "set logo y position", OFFSET(y_expr), AV_OPT_TYPE_STRING, { .str = "-1" }, 0, 0, FLAGS },
212  { "w", "set logo width", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str = "-1" }, 0, 0, FLAGS },
213  { "h", "set logo height", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str = "-1" }, 0, 0, FLAGS },
214  { "show", "show delogo area", OFFSET(show), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
215  { NULL }
216 };
217 
218 AVFILTER_DEFINE_CLASS(delogo);
220 {
221  DelogoContext *s = ctx->priv;
222 
223  av_expr_free(s->x_pexpr); s->x_pexpr = NULL;
224  av_expr_free(s->y_pexpr); s->y_pexpr = NULL;
225  av_expr_free(s->w_pexpr); s->w_pexpr = NULL;
226  av_expr_free(s->h_pexpr); s->h_pexpr = NULL;
227 }
228 
229 
231 {
232  static const enum AVPixelFormat pix_fmts[] = {
237  };
238  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
239  if (!fmts_list)
240  return AVERROR(ENOMEM);
241  return ff_set_common_formats(ctx, fmts_list);
242 }
243 
245 {
246  DelogoContext *s = ctx->priv;
247  int ret = 0;
248 
249  if ((ret = set_expr(&s->x_pexpr, s->x_expr, "x", ctx)) < 0 ||
250  (ret = set_expr(&s->y_pexpr, s->y_expr, "y", ctx)) < 0 ||
251  (ret = set_expr(&s->w_pexpr, s->w_expr, "w", ctx)) < 0 ||
252  (ret = set_expr(&s->h_pexpr, s->h_expr, "h", ctx)) < 0 )
253  return ret;
254 
255  s->x = av_expr_eval(s->x_pexpr, s->var_values, s);
256  s->y = av_expr_eval(s->y_pexpr, s->var_values, s);
257  s->w = av_expr_eval(s->w_pexpr, s->var_values, s);
258  s->h = av_expr_eval(s->h_pexpr, s->var_values, s);
259 
260 #define CHECK_UNSET_OPT(opt) \
261  if (s->opt == -1) { \
262  av_log(s, AV_LOG_ERROR, "Option %s was not set.\n", #opt); \
263  return AVERROR(EINVAL); \
264  }
269 
270  s->band = 1;
271 
272  av_log(ctx, AV_LOG_VERBOSE, "x:%d y:%d, w:%d h:%d band:%d show:%d\n",
273  s->x, s->y, s->w, s->h, s->band, s->show);
274 
275  s->w += s->band*2;
276  s->h += s->band*2;
277  s->x -= s->band;
278  s->y -= s->band;
279 
280  return 0;
281 }
282 
283 static int config_input(AVFilterLink *inlink)
284 {
285  DelogoContext *s = inlink->dst->priv;
286 
287  /* Check whether the logo area fits in the frame */
288  if (s->x + (s->band - 1) < 0 || s->x + s->w - (s->band*2 - 2) > inlink->w ||
289  s->y + (s->band - 1) < 0 || s->y + s->h - (s->band*2 - 2) > inlink->h) {
290  av_log(s, AV_LOG_ERROR, "Logo area is outside of the frame.\n");
291  return AVERROR(EINVAL);
292  }
293 
294  return 0;
295 }
296 
297 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
298 {
299  DelogoContext *s = inlink->dst->priv;
300  AVFilterLink *outlink = inlink->dst->outputs[0];
302  AVFrame *out;
303  int hsub0 = desc->log2_chroma_w;
304  int vsub0 = desc->log2_chroma_h;
305  int direct = 0;
306  int plane;
307  AVRational sar;
308  int ret;
309 
310  s->var_values[VAR_N] = inlink->frame_count_out;
311  s->var_values[VAR_T] = TS2T(in->pts, inlink->time_base);
312  s->x = av_expr_eval(s->x_pexpr, s->var_values, s);
313  s->y = av_expr_eval(s->y_pexpr, s->var_values, s);
314  s->w = av_expr_eval(s->w_pexpr, s->var_values, s);
315  s->h = av_expr_eval(s->h_pexpr, s->var_values, s);
316 
317  if (s->x + (s->band - 1) <= 0 || s->x + s->w - (s->band*2 - 2) > inlink->w ||
318  s->y + (s->band - 1) <= 0 || s->y + s->h - (s->band*2 - 2) > inlink->h) {
319  av_log(s, AV_LOG_WARNING, "Logo area is outside of the frame,"
320  " auto set the area inside of the frame\n");
321  }
322 
323  if (s->x + (s->band - 1) <= 0)
324  s->x = 1 + s->band;
325  if (s->y + (s->band - 1) <= 0)
326  s->y = 1 + s->band;
327  if (s->x + s->w - (s->band*2 - 2) > inlink->w)
328  s->w = inlink->w - s->x - (s->band*2 - 2);
329  if (s->y + s->h - (s->band*2 - 2) > inlink->h)
330  s->h = inlink->h - s->y - (s->band*2 - 2);
331 
332  ret = config_input(inlink);
333  if (ret < 0) {
334  av_frame_free(&in);
335  return ret;
336  }
337 
338  s->w += s->band*2;
339  s->h += s->band*2;
340  s->x -= s->band;
341  s->y -= s->band;
342 
343  if (av_frame_is_writable(in)) {
344  direct = 1;
345  out = in;
346  } else {
347  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
348  if (!out) {
349  av_frame_free(&in);
350  return AVERROR(ENOMEM);
351  }
352 
353  av_frame_copy_props(out, in);
354  }
355 
356  sar = in->sample_aspect_ratio;
357  /* Assume square pixels if SAR is unknown */
358  if (!sar.num)
359  sar.num = sar.den = 1;
360 
361  for (plane = 0; plane < desc->nb_components; plane++) {
362  int hsub = plane == 1 || plane == 2 ? hsub0 : 0;
363  int vsub = plane == 1 || plane == 2 ? vsub0 : 0;
364 
365  apply_delogo(out->data[plane], out->linesize[plane],
366  in ->data[plane], in ->linesize[plane],
367  AV_CEIL_RSHIFT(inlink->w, hsub),
368  AV_CEIL_RSHIFT(inlink->h, vsub),
369  sar, s->x>>hsub, s->y>>vsub,
370  /* Up and left borders were rounded down, inject lost bits
371  * into width and height to avoid error accumulation */
372  AV_CEIL_RSHIFT(s->w + (s->x & ((1<<hsub)-1)), hsub),
373  AV_CEIL_RSHIFT(s->h + (s->y & ((1<<vsub)-1)), vsub),
374  s->band>>FFMIN(hsub, vsub),
375  s->show, direct);
376  }
377 
378  if (!direct)
379  av_frame_free(&in);
380 
381  return ff_filter_frame(outlink, out);
382 }
383 
385  {
386  .name = "default",
387  .type = AVMEDIA_TYPE_VIDEO,
388  .filter_frame = filter_frame,
389  .config_props = config_input,
390  },
391  { NULL }
392 };
393 
395  {
396  .name = "default",
397  .type = AVMEDIA_TYPE_VIDEO,
398  },
399  { NULL }
400 };
401 
403  .name = "delogo",
404  .description = NULL_IF_CONFIG_SMALL("Remove logo from input video."),
405  .priv_size = sizeof(DelogoContext),
406  .priv_class = &delogo_class,
407  .init = init,
408  .uninit = uninit,
410  .inputs = avfilter_vf_delogo_inputs,
411  .outputs = avfilter_vf_delogo_outputs,
413 };
#define NULL
Definition: coverity.c:32
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
AVOption.
Definition: opt.h:246
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:79
static void apply_delogo(uint8_t *dst, int dst_linesize, uint8_t *src, int src_linesize, int w, int h, AVRational sar, int logo_x, int logo_y, int logo_w, int logo_h, unsigned int band, int show, int direct)
Apply a simple delogo algorithm to the image in src and put the result in dst.
Definition: vf_delogo.c:99
#define FLAGS
Definition: vf_delogo.c:207
int num
Numerator.
Definition: rational.h:59
static int query_formats(AVFilterContext *ctx)
Definition: vf_delogo.c:230
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:685
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:104
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:300
static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx)
Definition: vf_delogo.c:60
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:125
const char * name
Pad name.
Definition: internal.h:60
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1075
static int config_input(AVFilterLink *inlink)
Definition: vf_delogo.c:283
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
uint8_t
#define av_cold
Definition: attributes.h:88
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:393
Definition: eval.c:157
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
AVFilter ff_vf_delogo
Definition: vf_delogo.c:402
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
#define U(x)
Definition: vp56_arith.h:37
#define src
Definition: vp8dsp.c:254
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
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:605
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
static const AVFilterPad avfilter_vf_delogo_outputs[]
Definition: vf_delogo.c:394
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
void * priv
private data for use by the filter
Definition: avfilter.h:353
static void direct(const float *in, const FFTComplex *ir, int len, float *out)
Definition: af_afir.c:60
char * h_expr
Definition: vf_delogo.c:201
static av_cold int init(AVFilterContext *ctx)
Definition: vf_delogo.c:244
#define OFFSET(x)
Definition: vf_delogo.c:206
#define FFMAX(a, b)
Definition: common.h:94
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
var_name
Definition: aeval.c:46
char * y_expr
Definition: vf_delogo.c:201
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define FFMIN(a, b)
Definition: common.h:96
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_delogo.c:297
uint8_t w
Definition: llviddspenc.c:38
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_delogo.c:219
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
AVExpr * x_pexpr
Definition: vf_delogo.c:202
AVFILTER_DEFINE_CLASS(delogo)
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:595
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
static const char *const var_names[]
Definition: vf_delogo.c:39
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:388
static const AVOption delogo_options[]
Definition: vf_delogo.c:209
AVExpr * w_pexpr
Definition: vf_delogo.c:202
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
AVExpr * h_pexpr
Definition: vf_delogo.c:202
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
option
Definition: libkvazaar.c:291
Rational number (pair of numerator and denominator).
Definition: rational.h:58
const char * name
Filter name.
Definition: avfilter.h:148
char * x_expr
Definition: vf_delogo.c:201
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static int weight(int i, int blen, int offset)
Definition: diracdec.c:1560
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define TS2T(ts, tb)
Definition: vf_delogo.c:58
char * w_expr
Definition: vf_delogo.c:201
#define flags(name, subs,...)
Definition: cbs_av1.c:576
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
#define CHECK_UNSET_OPT(opt)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
double var_values[VAR_VARS_NB]
Definition: vf_delogo.c:203
common internal and external API header
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
int den
Denominator.
Definition: rational.h:60
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:766
A list of supported formats for one end of a filter link.
Definition: formats.h:64
An instance of a filter.
Definition: avfilter.h:338
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
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:338
internal API functions
static const AVFilterPad avfilter_vf_delogo_inputs[]
Definition: vf_delogo.c:384
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:75
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
AVExpr * y_pexpr
Definition: vf_delogo.c:202