FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
af_ladspa.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2013 Paul B Mahol
3  * Copyright (c) 2011 Mina Nagy Zaki
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  * LADSPA wrapper
25  */
26 
27 #include <dlfcn.h>
28 #include <ladspa.h>
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
32 #include "libavutil/opt.h"
33 #include "audio.h"
34 #include "avfilter.h"
35 #include "internal.h"
36 
37 typedef struct LADSPAContext {
38  const AVClass *class;
39  char *dl_name;
40  char *plugin;
41  char *options;
42  void *dl_handle;
43 
44  unsigned long nb_inputs;
45  unsigned long *ipmap; /* map input number to port number */
46 
47  unsigned long nb_inputcontrols;
48  unsigned long *icmap; /* map input control number to port number */
49  LADSPA_Data *ictlv; /* input controls values */
50 
51  unsigned long nb_outputs;
52  unsigned long *opmap; /* map output number to port number */
53 
54  unsigned long nb_outputcontrols;
55  unsigned long *ocmap; /* map output control number to port number */
56  LADSPA_Data *octlv; /* output controls values */
57 
58  const LADSPA_Descriptor *desc;
61  LADSPA_Handle *handles;
62 
65  int64_t pts;
66  int64_t duration;
68 
69 #define OFFSET(x) offsetof(LADSPAContext, x)
70 #define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
71 static const AVOption ladspa_options[] = {
72  { "file", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
73  { "f", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
74  { "plugin", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS },
75  { "p", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS },
76  { "controls", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS },
77  { "c", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS },
78  { "sample_rate", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS },
79  { "s", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS },
80  { "nb_samples", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
81  { "n", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
82  { "duration", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
83  { "d", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
84  { NULL }
85 };
86 
87 AVFILTER_DEFINE_CLASS(ladspa);
88 
90  LADSPAContext *s, int ctl, unsigned long *map,
91  LADSPA_Data *values, int print)
92 {
93  const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl];
94 
95  av_log(ctx, level, "c%i: %s [", ctl, s->desc->PortNames[map[ctl]]);
96 
97  if (LADSPA_IS_HINT_TOGGLED(h->HintDescriptor)) {
98  av_log(ctx, level, "toggled (1 or 0)");
99 
100  if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))
101  av_log(ctx, level, " (default %i)", (int)values[ctl]);
102  } else {
103  if (LADSPA_IS_HINT_INTEGER(h->HintDescriptor)) {
104  av_log(ctx, level, "<int>");
105 
106  if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor))
107  av_log(ctx, level, ", min: %i", (int)h->LowerBound);
108 
109  if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor))
110  av_log(ctx, level, ", max: %i", (int)h->UpperBound);
111 
112  if (print)
113  av_log(ctx, level, " (value %d)", (int)values[ctl]);
114  else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))
115  av_log(ctx, level, " (default %d)", (int)values[ctl]);
116  } else {
117  av_log(ctx, level, "<float>");
118 
119  if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor))
120  av_log(ctx, level, ", min: %f", h->LowerBound);
121 
122  if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor))
123  av_log(ctx, level, ", max: %f", h->UpperBound);
124 
125  if (print)
126  av_log(ctx, level, " (value %f)", values[ctl]);
127  else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))
128  av_log(ctx, level, " (default %f)", values[ctl]);
129  }
130 
131  if (LADSPA_IS_HINT_SAMPLE_RATE(h->HintDescriptor))
132  av_log(ctx, level, ", multiple of sample rate");
133 
134  if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
135  av_log(ctx, level, ", logarithmic scale");
136  }
137 
138  av_log(ctx, level, "]\n");
139 }
140 
141 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
142 {
143  AVFilterContext *ctx = inlink->dst;
144  LADSPAContext *s = ctx->priv;
145  AVFrame *out;
146  int i, h, p;
147 
148  av_assert0(in->channels == (s->nb_inputs * s->nb_handles));
149 
150  if (!s->nb_outputs ||
151  (av_frame_is_writable(in) && s->nb_inputs == s->nb_outputs &&
152  !(s->desc->Properties & LADSPA_PROPERTY_INPLACE_BROKEN))) {
153  out = in;
154  } else {
155  out = ff_get_audio_buffer(ctx->outputs[0], in->nb_samples);
156  if (!out) {
157  av_frame_free(&in);
158  return AVERROR(ENOMEM);
159  }
160  av_frame_copy_props(out, in);
161  }
162 
163  av_assert0(!s->nb_outputs || out->channels == (s->nb_outputs * s->nb_handles));
164 
165  for (h = 0; h < s->nb_handles; h++) {
166  for (i = 0; i < s->nb_inputs; i++) {
167  p = s->nb_handles > 1 ? h : i;
168  s->desc->connect_port(s->handles[h], s->ipmap[i],
169  (LADSPA_Data*)in->extended_data[p]);
170  }
171 
172  for (i = 0; i < s->nb_outputs; i++) {
173  p = s->nb_handles > 1 ? h : i;
174  s->desc->connect_port(s->handles[h], s->opmap[i],
175  (LADSPA_Data*)out->extended_data[p]);
176  }
177 
178  s->desc->run(s->handles[h], in->nb_samples);
179  }
180 
181  for (i = 0; i < s->nb_outputcontrols; i++)
182  print_ctl_info(ctx, AV_LOG_VERBOSE, s, i, s->ocmap, s->octlv, 1);
183 
184  if (out != in)
185  av_frame_free(&in);
186 
187  return ff_filter_frame(ctx->outputs[0], out);
188 }
189 
190 static int request_frame(AVFilterLink *outlink)
191 {
192  AVFilterContext *ctx = outlink->src;
193  LADSPAContext *s = ctx->priv;
194  AVFrame *out;
195  int64_t t;
196  int i;
197 
198  if (ctx->nb_inputs)
199  return ff_request_frame(ctx->inputs[0]);
200 
201  t = av_rescale(s->pts, AV_TIME_BASE, s->sample_rate);
202  if (s->duration >= 0 && t >= s->duration)
203  return AVERROR_EOF;
204 
205  out = ff_get_audio_buffer(outlink, s->nb_samples);
206  if (!out)
207  return AVERROR(ENOMEM);
208 
209  for (i = 0; i < s->nb_outputs; i++)
210  s->desc->connect_port(s->handles[0], s->opmap[i],
211  (LADSPA_Data*)out->extended_data[i]);
212 
213  s->desc->run(s->handles[0], s->nb_samples);
214 
215  for (i = 0; i < s->nb_outputcontrols; i++)
216  print_ctl_info(ctx, AV_LOG_INFO, s, i, s->ocmap, s->octlv, 1);
217 
218  out->sample_rate = s->sample_rate;
219  out->pts = s->pts;
220  s->pts += s->nb_samples;
221 
222  return ff_filter_frame(outlink, out);
223 }
224 
225 static void set_default_ctl_value(LADSPAContext *s, int ctl,
226  unsigned long *map, LADSPA_Data *values)
227 {
228  const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl];
229  const LADSPA_Data lower = h->LowerBound;
230  const LADSPA_Data upper = h->UpperBound;
231 
232  if (LADSPA_IS_HINT_DEFAULT_MINIMUM(h->HintDescriptor)) {
233  values[ctl] = lower;
234  } else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(h->HintDescriptor)) {
235  values[ctl] = upper;
236  } else if (LADSPA_IS_HINT_DEFAULT_0(h->HintDescriptor)) {
237  values[ctl] = 0.0;
238  } else if (LADSPA_IS_HINT_DEFAULT_1(h->HintDescriptor)) {
239  values[ctl] = 1.0;
240  } else if (LADSPA_IS_HINT_DEFAULT_100(h->HintDescriptor)) {
241  values[ctl] = 100.0;
242  } else if (LADSPA_IS_HINT_DEFAULT_440(h->HintDescriptor)) {
243  values[ctl] = 440.0;
244  } else if (LADSPA_IS_HINT_DEFAULT_LOW(h->HintDescriptor)) {
245  if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
246  values[ctl] = exp(log(lower) * 0.75 + log(upper) * 0.25);
247  else
248  values[ctl] = lower * 0.75 + upper * 0.25;
249  } else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(h->HintDescriptor)) {
250  if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
251  values[ctl] = exp(log(lower) * 0.5 + log(upper) * 0.5);
252  else
253  values[ctl] = lower * 0.5 + upper * 0.5;
254  } else if (LADSPA_IS_HINT_DEFAULT_HIGH(h->HintDescriptor)) {
255  if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
256  values[ctl] = exp(log(lower) * 0.25 + log(upper) * 0.75);
257  else
258  values[ctl] = lower * 0.25 + upper * 0.75;
259  }
260 }
261 
263 {
264  LADSPAContext *s = ctx->priv;
265  int i, j;
266 
267  s->nb_handles = s->nb_inputs == 1 && s->nb_outputs == 1 ? link->channels : 1;
268  s->handles = av_calloc(s->nb_handles, sizeof(*s->handles));
269  if (!s->handles)
270  return AVERROR(ENOMEM);
271 
272  for (i = 0; i < s->nb_handles; i++) {
273  s->handles[i] = s->desc->instantiate(s->desc, link->sample_rate);
274  if (!s->handles[i]) {
275  av_log(ctx, AV_LOG_ERROR, "Could not instantiate plugin.\n");
276  return AVERROR_EXTERNAL;
277  }
278 
279  // Connect the input control ports
280  for (j = 0; j < s->nb_inputcontrols; j++)
281  s->desc->connect_port(s->handles[i], s->icmap[j], s->ictlv + j);
282 
283  // Connect the output control ports
284  for (j = 0; j < s->nb_outputcontrols; j++)
285  s->desc->connect_port(s->handles[i], s->ocmap[j], &s->octlv[j]);
286 
287  if (s->desc->activate)
288  s->desc->activate(s->handles[i]);
289  }
290 
291  av_log(ctx, AV_LOG_DEBUG, "handles: %d\n", s->nb_handles);
292 
293  return 0;
294 }
295 
296 static int config_input(AVFilterLink *inlink)
297 {
298  AVFilterContext *ctx = inlink->dst;
299 
300  return connect_ports(ctx, inlink);
301 }
302 
303 static int config_output(AVFilterLink *outlink)
304 {
305  AVFilterContext *ctx = outlink->src;
306  LADSPAContext *s = ctx->priv;
307  int ret;
308 
309  if (ctx->nb_inputs) {
310  AVFilterLink *inlink = ctx->inputs[0];
311 
312  outlink->format = inlink->format;
313  outlink->sample_rate = inlink->sample_rate;
314  if (s->nb_inputs == s->nb_outputs) {
315  outlink->channel_layout = inlink->channel_layout;
316  outlink->channels = inlink->channels;
317  }
318 
319  ret = 0;
320  } else {
321  outlink->sample_rate = s->sample_rate;
322  outlink->time_base = (AVRational){1, s->sample_rate};
323 
324  ret = connect_ports(ctx, outlink);
325  }
326 
327  return ret;
328 }
329 
330 static void count_ports(const LADSPA_Descriptor *desc,
331  unsigned long *nb_inputs, unsigned long *nb_outputs)
332 {
333  LADSPA_PortDescriptor pd;
334  int i;
335 
336  for (i = 0; i < desc->PortCount; i++) {
337  pd = desc->PortDescriptors[i];
338 
339  if (LADSPA_IS_PORT_AUDIO(pd)) {
340  if (LADSPA_IS_PORT_INPUT(pd)) {
341  (*nb_inputs)++;
342  } else if (LADSPA_IS_PORT_OUTPUT(pd)) {
343  (*nb_outputs)++;
344  }
345  }
346  }
347 }
348 
349 static void *try_load(const char *dir, const char *soname)
350 {
351  char *path = av_asprintf("%s/%s.so", dir, soname);
352  void *ret = NULL;
353 
354  if (path) {
355  ret = dlopen(path, RTLD_LOCAL|RTLD_NOW);
356  av_free(path);
357  }
358 
359  return ret;
360 }
361 
362 static int set_control(AVFilterContext *ctx, unsigned long port, LADSPA_Data value)
363 {
364  LADSPAContext *s = ctx->priv;
365  const char *label = s->desc->Label;
366  LADSPA_PortRangeHint *h = (LADSPA_PortRangeHint *)s->desc->PortRangeHints +
367  s->icmap[port];
368 
369  if (port >= s->nb_inputcontrols) {
370  av_log(ctx, AV_LOG_ERROR, "Control c%ld is out of range [0 - %lu].\n",
371  port, s->nb_inputcontrols);
372  return AVERROR(EINVAL);
373  }
374 
375  if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor) &&
376  value < h->LowerBound) {
377  av_log(ctx, AV_LOG_ERROR,
378  "%s: input control c%ld is below lower boundary of %0.4f.\n",
379  label, port, h->LowerBound);
380  return AVERROR(EINVAL);
381  }
382 
383  if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor) &&
384  value > h->UpperBound) {
385  av_log(ctx, AV_LOG_ERROR,
386  "%s: input control c%ld is above upper boundary of %0.4f.\n",
387  label, port, h->UpperBound);
388  return AVERROR(EINVAL);
389  }
390 
391  s->ictlv[port] = value;
392 
393  return 0;
394 }
395 
397 {
398  LADSPAContext *s = ctx->priv;
399  LADSPA_Descriptor_Function descriptor_fn;
400  const LADSPA_Descriptor *desc;
401  LADSPA_PortDescriptor pd;
402  AVFilterPad pad = { NULL };
403  char *p, *arg, *saveptr = NULL;
404  unsigned long nb_ports;
405  int i, j = 0;
406 
407  if (!s->dl_name) {
408  av_log(ctx, AV_LOG_ERROR, "No plugin name provided\n");
409  return AVERROR(EINVAL);
410  }
411 
412  if (s->dl_name[0] == '/' || s->dl_name[0] == '.') {
413  // argument is a path
414  s->dl_handle = dlopen(s->dl_name, RTLD_LOCAL|RTLD_NOW);
415  } else {
416  // argument is a shared object name
417  char *paths = av_strdup(getenv("LADSPA_PATH"));
418  const char *separator = ":";
419 
420  if (paths) {
421  p = paths;
422  while ((arg = av_strtok(p, separator, &saveptr)) && !s->dl_handle) {
423  s->dl_handle = try_load(arg, s->dl_name);
424  p = NULL;
425  }
426  }
427 
428  av_free(paths);
429  if (!s->dl_handle && (paths = av_asprintf("%s/.ladspa/lib", getenv("HOME")))) {
430  s->dl_handle = try_load(paths, s->dl_name);
431  av_free(paths);
432  }
433 
434  if (!s->dl_handle)
435  s->dl_handle = try_load("/usr/local/lib/ladspa", s->dl_name);
436 
437  if (!s->dl_handle)
438  s->dl_handle = try_load("/usr/lib/ladspa", s->dl_name);
439  }
440  if (!s->dl_handle) {
441  av_log(ctx, AV_LOG_ERROR, "Failed to load '%s'\n", s->dl_name);
442  return AVERROR(EINVAL);
443  }
444 
445  descriptor_fn = dlsym(s->dl_handle, "ladspa_descriptor");
446  if (!descriptor_fn) {
447  av_log(ctx, AV_LOG_ERROR, "Could not find ladspa_descriptor: %s\n", dlerror());
448  return AVERROR(EINVAL);
449  }
450 
451  // Find the requested plugin, or list plugins
452  if (!s->plugin) {
453  av_log(ctx, AV_LOG_INFO, "The '%s' library contains the following plugins:\n", s->dl_name);
454  av_log(ctx, AV_LOG_INFO, "I = Input Channels\n");
455  av_log(ctx, AV_LOG_INFO, "O = Output Channels\n");
456  av_log(ctx, AV_LOG_INFO, "I:O %-25s %s\n", "Plugin", "Description");
457  av_log(ctx, AV_LOG_INFO, "\n");
458  for (i = 0; desc = descriptor_fn(i); i++) {
459  unsigned long inputs = 0, outputs = 0;
460 
461  count_ports(desc, &inputs, &outputs);
462  av_log(ctx, AV_LOG_INFO, "%lu:%lu %-25s %s\n", inputs, outputs, desc->Label,
463  (char *)av_x_if_null(desc->Name, "?"));
464  av_log(ctx, AV_LOG_VERBOSE, "Maker: %s\n",
465  (char *)av_x_if_null(desc->Maker, "?"));
466  av_log(ctx, AV_LOG_VERBOSE, "Copyright: %s\n",
467  (char *)av_x_if_null(desc->Copyright, "?"));
468  }
469  return AVERROR_EXIT;
470  } else {
471  for (i = 0;; i++) {
472  desc = descriptor_fn(i);
473  if (!desc) {
474  av_log(ctx, AV_LOG_ERROR, "Could not find plugin: %s\n", s->plugin);
475  return AVERROR(EINVAL);
476  }
477 
478  if (desc->Label && !strcmp(desc->Label, s->plugin))
479  break;
480  }
481  }
482 
483  s->desc = desc;
484  nb_ports = desc->PortCount;
485 
486  s->ipmap = av_calloc(nb_ports, sizeof(*s->ipmap));
487  s->opmap = av_calloc(nb_ports, sizeof(*s->opmap));
488  s->icmap = av_calloc(nb_ports, sizeof(*s->icmap));
489  s->ocmap = av_calloc(nb_ports, sizeof(*s->ocmap));
490  s->ictlv = av_calloc(nb_ports, sizeof(*s->ictlv));
491  s->octlv = av_calloc(nb_ports, sizeof(*s->octlv));
492  s->ctl_needs_value = av_calloc(nb_ports, sizeof(*s->ctl_needs_value));
493  if (!s->ipmap || !s->opmap || !s->icmap ||
494  !s->ocmap || !s->ictlv || !s->octlv || !s->ctl_needs_value)
495  return AVERROR(ENOMEM);
496 
497  for (i = 0; i < nb_ports; i++) {
498  pd = desc->PortDescriptors[i];
499 
500  if (LADSPA_IS_PORT_AUDIO(pd)) {
501  if (LADSPA_IS_PORT_INPUT(pd)) {
502  s->ipmap[s->nb_inputs] = i;
503  s->nb_inputs++;
504  } else if (LADSPA_IS_PORT_OUTPUT(pd)) {
505  s->opmap[s->nb_outputs] = i;
506  s->nb_outputs++;
507  }
508  } else if (LADSPA_IS_PORT_CONTROL(pd)) {
509  if (LADSPA_IS_PORT_INPUT(pd)) {
510  s->icmap[s->nb_inputcontrols] = i;
511 
512  if (LADSPA_IS_HINT_HAS_DEFAULT(desc->PortRangeHints[i].HintDescriptor))
514  else
516 
517  s->nb_inputcontrols++;
518  } else if (LADSPA_IS_PORT_OUTPUT(pd)) {
519  s->ocmap[s->nb_outputcontrols] = i;
520  s->nb_outputcontrols++;
521  }
522  }
523  }
524 
525  // List Control Ports if "help" is specified
526  if (s->options && !strcmp(s->options, "help")) {
527  if (!s->nb_inputcontrols) {
528  av_log(ctx, AV_LOG_INFO,
529  "The '%s' plugin does not have any input controls.\n",
530  desc->Label);
531  } else {
532  av_log(ctx, AV_LOG_INFO,
533  "The '%s' plugin has the following input controls:\n",
534  desc->Label);
535  for (i = 0; i < s->nb_inputcontrols; i++)
536  print_ctl_info(ctx, AV_LOG_INFO, s, i, s->icmap, s->ictlv, 0);
537  }
538  return AVERROR_EXIT;
539  }
540 
541  // Parse control parameters
542  p = s->options;
543  while (s->options) {
544  LADSPA_Data val;
545  int ret;
546 
547  if (!(arg = av_strtok(p, " |", &saveptr)))
548  break;
549  p = NULL;
550 
551  if (sscanf(arg, "c%d=%f", &i, &val) != 2) {
552  if (sscanf(arg, "%f", &val) != 1) {
553  av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n");
554  return AVERROR(EINVAL);
555  }
556  i = j++;
557  }
558 
559  if ((ret = set_control(ctx, i, val)) < 0)
560  return ret;
561  s->ctl_needs_value[i] = 0;
562  }
563 
564  // Check if any controls are not set
565  for (i = 0; i < s->nb_inputcontrols; i++) {
566  if (s->ctl_needs_value[i]) {
567  av_log(ctx, AV_LOG_ERROR, "Control c%d must be set.\n", i);
568  print_ctl_info(ctx, AV_LOG_ERROR, s, i, s->icmap, s->ictlv, 0);
569  return AVERROR(EINVAL);
570  }
571  }
572 
573  pad.type = AVMEDIA_TYPE_AUDIO;
574 
575  if (s->nb_inputs) {
576  pad.name = av_asprintf("in0:%s%lu", desc->Label, s->nb_inputs);
577  if (!pad.name)
578  return AVERROR(ENOMEM);
579 
582  if (ff_insert_inpad(ctx, ctx->nb_inputs, &pad) < 0) {
583  av_freep(&pad.name);
584  return AVERROR(ENOMEM);
585  }
586  }
587 
588  av_log(ctx, AV_LOG_DEBUG, "ports: %lu\n", nb_ports);
589  av_log(ctx, AV_LOG_DEBUG, "inputs: %lu outputs: %lu\n",
590  s->nb_inputs, s->nb_outputs);
591  av_log(ctx, AV_LOG_DEBUG, "input controls: %lu output controls: %lu\n",
593 
594  return 0;
595 }
596 
598 {
599  LADSPAContext *s = ctx->priv;
602  static const enum AVSampleFormat sample_fmts[] = {
604  int ret;
605 
606  formats = ff_make_format_list(sample_fmts);
607  if (!formats)
608  return AVERROR(ENOMEM);
609  ret = ff_set_common_formats(ctx, formats);
610  if (ret < 0)
611  return ret;
612 
613  if (s->nb_inputs) {
614  formats = ff_all_samplerates();
615  if (!formats)
616  return AVERROR(ENOMEM);
617 
618  ret = ff_set_common_samplerates(ctx, formats);
619  if (ret < 0)
620  return ret;
621  } else {
622  int sample_rates[] = { s->sample_rate, -1 };
623 
624  ret = ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates));
625  if (ret < 0)
626  return ret;
627  }
628 
629  if (s->nb_inputs == 1 && s->nb_outputs == 1) {
630  // We will instantiate multiple LADSPA_Handle, one over each channel
631  layouts = ff_all_channel_counts();
632  if (!layouts)
633  return AVERROR(ENOMEM);
634 
635  ret = ff_set_common_channel_layouts(ctx, layouts);
636  if (ret < 0)
637  return ret;
638  } else if (s->nb_inputs == 2 && s->nb_outputs == 2) {
639  layouts = NULL;
641  if (ret < 0)
642  return ret;
643  ret = ff_set_common_channel_layouts(ctx, layouts);
644  if (ret < 0)
645  return ret;
646  } else {
647  AVFilterLink *outlink = ctx->outputs[0];
648 
649  if (s->nb_inputs >= 1) {
650  AVFilterLink *inlink = ctx->inputs[0];
651  uint64_t inlayout = FF_COUNT2LAYOUT(s->nb_inputs);
652 
653  layouts = NULL;
654  ret = ff_add_channel_layout(&layouts, inlayout);
655  if (ret < 0)
656  return ret;
657  ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
658  if (ret < 0)
659  return ret;
660 
661  if (!s->nb_outputs) {
662  ret = ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
663  if (ret < 0)
664  return ret;
665  }
666  }
667 
668  if (s->nb_outputs >= 1) {
669  uint64_t outlayout = FF_COUNT2LAYOUT(s->nb_outputs);
670 
671  layouts = NULL;
672  ret = ff_add_channel_layout(&layouts, outlayout);
673  if (ret < 0)
674  return ret;
675  ret = ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
676  if (ret < 0)
677  return ret;
678  }
679  }
680 
681  return 0;
682 }
683 
685 {
686  LADSPAContext *s = ctx->priv;
687  int i;
688 
689  for (i = 0; i < s->nb_handles; i++) {
690  if (s->desc->deactivate)
691  s->desc->deactivate(s->handles[i]);
692  if (s->desc->cleanup)
693  s->desc->cleanup(s->handles[i]);
694  }
695 
696  if (s->dl_handle)
697  dlclose(s->dl_handle);
698 
699  av_freep(&s->ipmap);
700  av_freep(&s->opmap);
701  av_freep(&s->icmap);
702  av_freep(&s->ocmap);
703  av_freep(&s->ictlv);
704  av_freep(&s->octlv);
705  av_freep(&s->handles);
707 
708  if (ctx->nb_inputs)
709  av_freep(&ctx->input_pads[0].name);
710 }
711 
712 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
713  char *res, int res_len, int flags)
714 {
715  LADSPA_Data value;
716  unsigned long port;
717 
718  if (sscanf(cmd, "c%ld", &port) + sscanf(args, "%f", &value) != 2)
719  return AVERROR(EINVAL);
720 
721  return set_control(ctx, port, value);
722 }
723 
724 static const AVFilterPad ladspa_outputs[] = {
725  {
726  .name = "default",
727  .type = AVMEDIA_TYPE_AUDIO,
728  .config_props = config_output,
729  .request_frame = request_frame,
730  },
731  { NULL }
732 };
733 
735  .name = "ladspa",
736  .description = NULL_IF_CONFIG_SMALL("Apply LADSPA effect."),
737  .priv_size = sizeof(LADSPAContext),
738  .priv_class = &ladspa_class,
739  .init = init,
740  .uninit = uninit,
743  .inputs = 0,
744  .outputs = ladspa_outputs,
746 };
static void set_default_ctl_value(LADSPAContext *s, int ctl, unsigned long *map, LADSPA_Data *values)
Definition: af_ladspa.c:225
float, planar
Definition: samplefmt.h:69
#define NULL
Definition: coverity.c:32
int ff_set_common_channel_layouts(AVFilterContext *ctx, AVFilterChannelLayouts *layouts)
A helper for query_formats() which sets all links to the same list of channel layouts/sample rates...
Definition: formats.c:549
const char const char void * val
Definition: avisynth_c.h:771
unsigned long * opmap
Definition: af_ladspa.c:52
const char * s
Definition: avisynth_c.h:768
AVFilter ff_af_ladspa
Definition: af_ladspa.c:734
void * dl_handle
Definition: af_ladspa.c:42
static int request_frame(AVFilterLink *outlink)
Definition: af_ladspa.c:190
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
AVOption.
Definition: opt.h:246
static int config_output(AVFilterLink *outlink)
Definition: af_ladspa.c:303
#define OFFSET(x)
Definition: af_ladspa.c:69
Main libavfilter public API header.
#define FLAGS
Definition: af_ladspa.c:70
const char * desc
Definition: nvenc.c:65
int sample_rate
Definition: af_ladspa.c:63
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:105
unsigned long nb_outputs
Definition: af_ladspa.c:51
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_ladspa.c:712
enum AVMediaType type
AVFilterPad type.
Definition: internal.h:65
#define AV_CH_LAYOUT_STEREO
char * options
Definition: af_ladspa.c:41
char * dl_name
Definition: af_ladspa.c:39
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:244
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
LADSPA_Handle * handles
Definition: af_ladspa.c:61
LADSPA_Data * ictlv
Definition: af_ladspa.c:49
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
Add *ref as a new reference to f.
Definition: formats.c:435
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: af_ladspa.c:141
#define av_cold
Definition: attributes.h:82
AVOptions.
static void count_ports(const LADSPA_Descriptor *desc, unsigned long *nb_inputs, unsigned long *nb_outputs)
Definition: af_ladspa.c:330
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:311
int64_t duration
Definition: movenc.c:63
int64_t duration
Definition: af_ladspa.c:66
static int flags
Definition: log.c:55
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int nb_handles
Definition: af_ladspa.c:60
AVFILTER_DEFINE_CLASS(ladspa)
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
static void * av_x_if_null(const void *p, const void *x)
Return x default pointer in case p is NULL.
Definition: avutil.h:308
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
#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:568
int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout)
Definition: formats.c:343
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
#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:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
const LADSPA_Descriptor * desc
Definition: af_ladspa.c:58
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int(* filter_frame)(AVFilterLink *link, AVFrame *frame)
Filtering callback.
Definition: internal.h:93
const char * arg
Definition: jacosubdec.c:66
simple assert() macros that are a bit more flexible than ISO C assert().
int8_t exp
Definition: eval.c:72
int * ctl_needs_value
Definition: af_ladspa.c:59
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
int channels
number of audio channels, only used for audio.
Definition: frame.h:523
audio channel layout utility functions
unsigned nb_inputs
number of input pads
Definition: avfilter.h:347
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
static av_cold int init(AVFilterContext *ctx)
Definition: af_ladspa.c:396
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
AVFormatContext * ctx
Definition: movenc.c:48
static int set_control(AVFilterContext *ctx, unsigned long port, LADSPA_Data value)
Definition: af_ladspa.c:362
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_ladspa.c:684
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
A list of supported channel layouts.
Definition: formats.h:85
static int config_input(AVFilterLink *inlink)
Definition: af_ladspa.c:296
static void * try_load(const char *dir, const char *soname)
Definition: af_ladspa.c:349
static const AVOption ladspa_options[]
Definition: af_ladspa.c:71
sample_rate
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
unsigned long nb_outputcontrols
Definition: af_ladspa.c:54
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
unsigned long * ipmap
Definition: af_ladspa.c:45
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:592
unsigned long nb_inputs
Definition: af_ladspa.c:44
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
Describe the class of an AVClass context structure.
Definition: log.h:67
int sample_rate
Sample rate of the audio data.
Definition: frame.h:391
Filter definition.
Definition: avfilter.h:144
Rational number (pair of numerator and denominator).
Definition: rational.h:58
char * plugin
Definition: af_ladspa.c:40
static int query_formats(AVFilterContext *ctx)
Definition: af_ladspa.c:597
const char * name
Filter name.
Definition: avfilter.h:148
const VDPAUPixFmtMap * map
static int connect_ports(AVFilterContext *ctx, AVFilterLink *link)
Definition: af_ladspa.c:262
int nb_samples
Definition: af_ladspa.c:64
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
enum MovChannelLayoutTag * layouts
Definition: mov_chan.c:434
unsigned long * ocmap
Definition: af_ladspa.c:55
AVFilterFormats * ff_all_samplerates(void)
Definition: formats.c:395
static void print_ctl_info(AVFilterContext *ctx, int level, LADSPAContext *s, int ctl, unsigned long *map, LADSPA_Data *values, int print)
Definition: af_ladspa.c:89
uint8_t level
Definition: svq3.c:207
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok()...
Definition: avstring.c:184
const OptionDef options[]
Definition: ffmpeg_opt.c:3292
sample_rates
if(ret< 0)
Definition: vf_mcdeint.c:279
unsigned long * icmap
Definition: af_ladspa.c:48
int64_t pts
Definition: af_ladspa.c:65
#define av_free(p)
A list of supported formats for one end of a filter link.
Definition: formats.h:64
static const AVFilterPad ladspa_outputs[]
Definition: af_ladspa.c:724
An instance of a filter.
Definition: avfilter.h:338
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
FILE * out
Definition: movenc.c:54
#define av_freep(p)
int(* config_props)(AVFilterLink *link)
Link configuration callback.
Definition: internal.h:129
#define FF_COUNT2LAYOUT(c)
Encode a channel count as a channel layout.
Definition: formats.h:102
LADSPA_Data * octlv
Definition: af_ladspa.c:56
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
Definition: avfilter.c:407
formats
Definition: signature.h:48
internal API functions
AVFilterChannelLayouts * ff_all_channel_counts(void)
Construct an AVFilterChannelLayouts coding for any channel layout, with known or unknown disposition...
Definition: formats.c:410
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:265
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
unsigned long nb_inputcontrols
Definition: af_ladspa.c:47
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:284
static void print(AVTreeNode *t, int depth)
Definition: tree.c:44
int ff_set_common_samplerates(AVFilterContext *ctx, AVFilterFormats *samplerates)
Definition: formats.c:556
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:652
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.
Definition: internal.h:277