FFmpeg  4.4.4
af_crystalizer.c
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1 /*
2  * Copyright (c) 2016 The FFmpeg Project
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
22 #include "libavutil/opt.h"
23 #include "avfilter.h"
24 #include "audio.h"
25 #include "formats.h"
26 
27 typedef struct CrystalizerContext {
28  const AVClass *class;
29  float mult;
30  int clip;
32  int (*filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
34 
35 #define OFFSET(x) offsetof(CrystalizerContext, x)
36 #define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
37 
38 static const AVOption crystalizer_options[] = {
39  { "i", "set intensity", OFFSET(mult), AV_OPT_TYPE_FLOAT, {.dbl=2.0},-10, 10, A },
40  { "c", "enable clipping", OFFSET(clip), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, A },
41  { NULL }
42 };
43 
44 AVFILTER_DEFINE_CLASS(crystalizer);
45 
47 {
50  static const enum AVSampleFormat sample_fmts[] = {
54  };
55  int ret;
56 
58  if (!formats)
59  return AVERROR(ENOMEM);
61  if (ret < 0)
62  return ret;
63 
65  if (!layouts)
66  return AVERROR(ENOMEM);
67 
69  if (ret < 0)
70  return ret;
71 
74 }
75 
76 typedef struct ThreadData {
77  void **d;
78  void **p;
79  const void **s;
80  int nb_samples;
81  int channels;
82  float mult;
83  int clip;
84 } ThreadData;
85 
86 static int filter_flt(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
87 {
88  ThreadData *td = arg;
89  void **d = td->d;
90  void **p = td->p;
91  const void **s = td->s;
92  const int nb_samples = td->nb_samples;
93  const int channels = td->channels;
94  const float mult = td->mult;
95  const int clip = td->clip;
96  const int start = (channels * jobnr) / nb_jobs;
97  const int end = (channels * (jobnr+1)) / nb_jobs;
98  float *prv = p[0];
99  int n, c;
100 
101  for (c = start; c < end; c++) {
102  const float *src = s[0];
103  float *dst = d[0];
104 
105  for (n = 0; n < nb_samples; n++) {
106  float current = src[c];
107  dst[c] = current + (current - prv[c]) * mult;
108  prv[c] = current;
109  if (clip) {
110  dst[c] = av_clipf(dst[c], -1, 1);
111  }
112 
113  dst += channels;
114  src += channels;
115  }
116  }
117 
118  return 0;
119 }
120 
121 static int filter_dbl(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
122 {
123  ThreadData *td = arg;
124  void **d = td->d;
125  void **p = td->p;
126  const void **s = td->s;
127  const int nb_samples = td->nb_samples;
128  const int channels = td->channels;
129  double mult = td->mult;
130  const int clip = td->clip;
131  const int start = (channels * jobnr) / nb_jobs;
132  const int end = (channels * (jobnr+1)) / nb_jobs;
133  double *prv = p[0];
134  int n, c;
135 
136  for (c = start; c < end; c++) {
137  const double *src = s[0];
138  double *dst = d[0];
139 
140  for (n = 0; n < nb_samples; n++) {
141  double current = src[c];
142 
143  dst[c] = current + (current - prv[c]) * mult;
144  prv[c] = current;
145  if (clip) {
146  dst[c] = av_clipd(dst[c], -1, 1);
147  }
148 
149  dst += channels;
150  src += channels;
151  }
152  }
153 
154  return 0;
155 }
156 
157 static int filter_fltp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
158 {
159  ThreadData *td = arg;
160  void **d = td->d;
161  void **p = td->p;
162  const void **s = td->s;
163  const int nb_samples = td->nb_samples;
164  const int channels = td->channels;
165  float mult = td->mult;
166  const int clip = td->clip;
167  const int start = (channels * jobnr) / nb_jobs;
168  const int end = (channels * (jobnr+1)) / nb_jobs;
169  int n, c;
170 
171  for (c = start; c < end; c++) {
172  const float *src = s[c];
173  float *dst = d[c];
174  float *prv = p[c];
175 
176  for (n = 0; n < nb_samples; n++) {
177  float current = src[n];
178 
179  dst[n] = current + (current - prv[0]) * mult;
180  prv[0] = current;
181  if (clip) {
182  dst[n] = av_clipf(dst[n], -1, 1);
183  }
184  }
185  }
186 
187  return 0;
188 }
189 
190 static int filter_dblp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
191 {
192  ThreadData *td = arg;
193  void **d = td->d;
194  void **p = td->p;
195  const void **s = td->s;
196  const int nb_samples = td->nb_samples;
197  const int channels = td->channels;
198  const double mult = td->mult;
199  const int clip = td->clip;
200  const int start = (channels * jobnr) / nb_jobs;
201  const int end = (channels * (jobnr+1)) / nb_jobs;
202  int n, c;
203 
204  for (c = start; c < end; c++) {
205  const double *src = s[c];
206  double *dst = d[c];
207  double *prv = p[c];
208 
209  for (n = 0; n < nb_samples; n++) {
210  double current = src[n];
211 
212  dst[n] = current + (current - prv[0]) * mult;
213  prv[0] = current;
214  if (clip) {
215  dst[n] = av_clipd(dst[n], -1, 1);
216  }
217  }
218  }
219 
220  return 0;
221 }
222 
223 static int ifilter_flt(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
224 {
225  ThreadData *td = arg;
226  void **d = td->d;
227  void **p = td->p;
228  const void **s = td->s;
229  const int nb_samples = td->nb_samples;
230  const int channels = td->channels;
231  const float mult = -td->mult;
232  const float div = -td->mult + 1.f;
233  const int clip = td->clip;
234  const int start = (channels * jobnr) / nb_jobs;
235  const int end = (channels * (jobnr+1)) / nb_jobs;
236  float *prv = p[0];
237  int n, c;
238 
239  for (c = start; c < end; c++) {
240  const float *src = s[0];
241  float *dst = d[0];
242 
243  for (n = 0; n < nb_samples; n++) {
244  float current = src[c];
245  dst[c] = (current + prv[c] * mult) / div;
246  prv[c] = dst[c];
247  if (clip) {
248  dst[c] = av_clipf(dst[c], -1, 1);
249  }
250 
251  dst += channels;
252  src += channels;
253  }
254  }
255 
256  return 0;
257 }
258 
259 static int ifilter_dbl(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
260 {
261  ThreadData *td = arg;
262  void **d = td->d;
263  void **p = td->p;
264  const void **s = td->s;
265  const int nb_samples = td->nb_samples;
266  const int channels = td->channels;
267  const double mult = -td->mult;
268  const double div = -td->mult + 1.f;
269  const int clip = td->clip;
270  const int start = (channels * jobnr) / nb_jobs;
271  const int end = (channels * (jobnr+1)) / nb_jobs;
272  double *prv = p[0];
273  int n, c;
274 
275  for (c = start; c < end; c++) {
276  const double *src = s[0];
277  double *dst = d[0];
278 
279  for (n = 0; n < nb_samples; n++) {
280  double current = src[c];
281 
282  dst[c] = (current + prv[c] * mult) / div;
283  prv[c] = dst[c];
284  if (clip) {
285  dst[c] = av_clipd(dst[c], -1, 1);
286  }
287 
288  dst += channels;
289  src += channels;
290  }
291  }
292 
293  return 0;
294 }
295 
296 static int ifilter_fltp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
297 {
298  ThreadData *td = arg;
299  void **d = td->d;
300  void **p = td->p;
301  const void **s = td->s;
302  const int nb_samples = td->nb_samples;
303  const int channels = td->channels;
304  const float mult = -td->mult;
305  const float div = -td->mult + 1.f;
306  const int clip = td->clip;
307  const int start = (channels * jobnr) / nb_jobs;
308  const int end = (channels * (jobnr+1)) / nb_jobs;
309  int n, c;
310 
311  for (c = start; c < end; c++) {
312  const float *src = s[c];
313  float *dst = d[c];
314  float *prv = p[c];
315 
316  for (n = 0; n < nb_samples; n++) {
317  float current = src[n];
318 
319  dst[n] = (current + prv[0] * mult) / div;
320  prv[0] = dst[n];
321  if (clip) {
322  dst[n] = av_clipf(dst[n], -1, 1);
323  }
324  }
325  }
326 
327  return 0;
328 }
329 
330 static int ifilter_dblp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
331 {
332  ThreadData *td = arg;
333  void **d = td->d;
334  void **p = td->p;
335  const void **s = td->s;
336  const int nb_samples = td->nb_samples;
337  const int channels = td->channels;
338  const double mult = -td->mult;
339  const double div = -td->mult + 1.f;
340  const int clip = td->clip;
341  const int start = (channels * jobnr) / nb_jobs;
342  const int end = (channels * (jobnr+1)) / nb_jobs;
343  int n, c;
344 
345  for (c = start; c < end; c++) {
346  const double *src = s[c];
347  double *dst = d[c];
348  double *prv = p[c];
349 
350  for (n = 0; n < nb_samples; n++) {
351  double current = src[n];
352 
353  dst[n] = (current + prv[0] * mult) / div;
354  prv[0] = dst[n];
355  if (clip) {
356  dst[n] = av_clipd(dst[n], -1, 1);
357  }
358  }
359  }
360 
361  return 0;
362 }
363 
364 static int config_input(AVFilterLink *inlink)
365 {
366  AVFilterContext *ctx = inlink->dst;
367  CrystalizerContext *s = ctx->priv;
368 
369  switch (inlink->format) {
370  case AV_SAMPLE_FMT_FLT: s->filter = s->mult >= 0.f ? filter_flt : ifilter_flt; break;
371  case AV_SAMPLE_FMT_DBL: s->filter = s->mult >= 0.f ? filter_dbl : ifilter_dbl; break;
372  case AV_SAMPLE_FMT_FLTP: s->filter = s->mult >= 0.f ? filter_fltp : ifilter_fltp; break;
373  case AV_SAMPLE_FMT_DBLP: s->filter = s->mult >= 0.f ? filter_dblp : ifilter_dblp; break;
374  }
375 
376  return 0;
377 }
378 
379 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
380 {
381  AVFilterContext *ctx = inlink->dst;
382  AVFilterLink *outlink = ctx->outputs[0];
383  CrystalizerContext *s = ctx->priv;
384  AVFrame *out;
385  ThreadData td;
386 
387  if (!s->prev) {
388  s->prev = ff_get_audio_buffer(inlink, 1);
389  if (!s->prev) {
390  av_frame_free(&in);
391  return AVERROR(ENOMEM);
392  }
393  }
394 
395  if (av_frame_is_writable(in)) {
396  out = in;
397  } else {
398  out = ff_get_audio_buffer(outlink, in->nb_samples);
399  if (!out) {
400  av_frame_free(&in);
401  return AVERROR(ENOMEM);
402  }
404  }
405 
406  td.d = (void **)out->extended_data;
407  td.s = (const void **)in->extended_data;
408  td.p = (void **)s->prev->extended_data;
409  td.nb_samples = in->nb_samples;
410  td.channels = in->channels;
411  td.mult = ctx->is_disabled ? 0.f : s->mult;
412  td.clip = s->clip;
413  ctx->internal->execute(ctx, s->filter, &td, NULL, FFMIN(inlink->channels,
415 
416  if (out != in)
417  av_frame_free(&in);
418 
419  return ff_filter_frame(outlink, out);
420 }
421 
423 {
424  CrystalizerContext *s = ctx->priv;
425 
426  av_frame_free(&s->prev);
427 }
428 
429 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
430  char *res, int res_len, int flags)
431 {
432  int ret;
433 
434  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
435  if (ret < 0)
436  return ret;
437 
438  return config_input(ctx->inputs[0]);
439 }
440 
441 static const AVFilterPad inputs[] = {
442  {
443  .name = "default",
444  .type = AVMEDIA_TYPE_AUDIO,
445  .filter_frame = filter_frame,
446  .config_props = config_input,
447  },
448  { NULL }
449 };
450 
451 static const AVFilterPad outputs[] = {
452  {
453  .name = "default",
454  .type = AVMEDIA_TYPE_AUDIO,
455  },
456  { NULL }
457 };
458 
460  .name = "crystalizer",
461  .description = NULL_IF_CONFIG_SMALL("Simple audio noise sharpening filter."),
462  .query_formats = query_formats,
463  .priv_size = sizeof(CrystalizerContext),
464  .priv_class = &crystalizer_class,
465  .uninit = uninit,
466  .inputs = inputs,
467  .outputs = outputs,
471 };
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:925
static const AVOption crystalizer_options[]
static int ifilter_dbl(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int ifilter_fltp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int filter_flt(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int ifilter_flt(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int filter_dbl(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
static int filter_fltp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static const AVFilterPad inputs[]
static const AVFilterPad outputs[]
AVFilter ff_af_crystalizer
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
#define A
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
static av_cold void uninit(AVFilterContext *ctx)
static int filter_dblp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
#define OFFSET(x)
AVFILTER_DEFINE_CLASS(crystalizer)
static int ifilter_dblp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
channels
Definition: aptx.h:33
#define av_cold
Definition: attributes.h:88
AVFrame * ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
Request an audio samples buffer with a specific set of permissions.
Definition: audio.c:86
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)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:882
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
audio channel layout utility functions
#define FFMIN(a, b)
Definition: common.h:105
#define av_clipd
Definition: common.h:173
#define av_clipf
Definition: common.h:170
#define NULL
Definition: coverity.c:32
int
AVFilterChannelLayouts * ff_all_channel_counts(void)
Construct an AVFilterChannelLayouts coding for any channel layout, with known or unknown disposition.
Definition: formats.c:436
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:587
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
int ff_set_common_samplerates(AVFilterContext *ctx, AVFilterFormats *samplerates)
Definition: formats.c:575
int ff_set_common_channel_layouts(AVFilterContext *ctx, AVFilterChannelLayouts *channel_layouts)
A helper for query_formats() which sets all links to the same list of channel layouts/sample rates.
Definition: formats.c:568
AVFilterFormats * ff_all_samplerates(void)
Definition: formats.c:421
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:134
#define AVERROR(e)
Definition: error.h:43
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition: samplefmt.h:69
@ AV_SAMPLE_FMT_FLT
float
Definition: samplefmt.h:63
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
@ AV_SAMPLE_FMT_DBLP
double, planar
Definition: samplefmt.h:70
@ AV_SAMPLE_FMT_DBL
double
Definition: samplefmt.h:64
static int16_t mult(Float11 *f1, Float11 *f2)
Definition: g726.c:55
const char * arg
Definition: jacosubdec.c:66
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
enum MovChannelLayoutTag * layouts
Definition: mov_chan.c:434
AVOptions.
#define td
Definition: regdef.h:70
formats
Definition: signature.h:48
Describe the class of an AVClass context structure.
Definition: log.h:67
A list of supported channel layouts.
Definition: formats.h:86
An instance of a filter.
Definition: avfilter.h:341
A list of supported formats for one end of a filter link.
Definition: formats.h:65
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
AVOption.
Definition: opt.h:248
int(* filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Used for passing data between threads.
Definition: dsddec.c:67
const void ** s
#define src
Definition: vp8dsp.c:255
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:162
static double c[64]