| 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/avstring.h" |
| 30 | #include "libavutil/channel_layout.h" |
| 31 | #include "libavutil/opt.h" |
| 32 | #include "audio.h" |
| 33 | #include "avfilter.h" |
| 34 | #include "internal.h" |
| 35 | |
| 36 | typedef struct LADSPAContext { |
| 37 | const AVClass *class; |
| 38 | char *dl_name; |
| 39 | char *plugin; |
| 40 | char *options; |
| 41 | void *dl_handle; |
| 42 | |
| 43 | unsigned long nb_inputs; |
| 44 | unsigned long *ipmap; /* map input number to port number */ |
| 45 | |
| 46 | unsigned long nb_inputcontrols; |
| 47 | unsigned long *icmap; /* map input control number to port number */ |
| 48 | LADSPA_Data *ictlv; /* input controls values */ |
| 49 | |
| 50 | unsigned long nb_outputs; |
| 51 | unsigned long *opmap; /* map output number to port number */ |
| 52 | |
| 53 | unsigned long nb_outputcontrols; |
| 54 | unsigned long *ocmap; /* map output control number to port number */ |
| 55 | LADSPA_Data *octlv; /* output controls values */ |
| 56 | |
| 57 | const LADSPA_Descriptor *desc; |
| 58 | int *ctl_needs_value; |
| 59 | int nb_handles; |
| 60 | LADSPA_Handle *handles; |
| 61 | |
| 62 | int sample_rate; |
| 63 | int nb_samples; |
| 64 | int64_t pts; |
| 65 | int64_t duration; |
| 66 | } LADSPAContext; |
| 67 | |
| 68 | #define OFFSET(x) offsetof(LADSPAContext, x) |
| 69 | #define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
| 70 | static const AVOption ladspa_options[] = { |
| 71 | { "file", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 72 | { "f", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 73 | { "plugin", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 74 | { "p", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 75 | { "controls", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 76 | { "c", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 77 | { "sample_rate", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS }, |
| 78 | { "s", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS }, |
| 79 | { "nb_samples", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS }, |
| 80 | { "n", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS }, |
| 81 | { "duration", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS }, |
| 82 | { "d", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS }, |
| 83 | { NULL } |
| 84 | }; |
| 85 | |
| 86 | AVFILTER_DEFINE_CLASS(ladspa); |
| 87 | |
| 88 | static void print_ctl_info(AVFilterContext *ctx, int level, |
| 89 | LADSPAContext *s, int ctl, unsigned long *map, |
| 90 | LADSPA_Data *values, int print) |
| 91 | { |
| 92 | const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl]; |
| 93 | |
| 94 | av_log(ctx, level, "c%i: %s [", ctl, s->desc->PortNames[map[ctl]]); |
| 95 | |
| 96 | if (LADSPA_IS_HINT_TOGGLED(h->HintDescriptor)) { |
| 97 | av_log(ctx, level, "toggled (1 or 0)"); |
| 98 | |
| 99 | if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor)) |
| 100 | av_log(ctx, level, " (default %i)", (int)values[ctl]); |
| 101 | } else { |
| 102 | if (LADSPA_IS_HINT_INTEGER(h->HintDescriptor)) { |
| 103 | av_log(ctx, level, "<int>"); |
| 104 | |
| 105 | if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor)) |
| 106 | av_log(ctx, level, ", min: %i", (int)h->LowerBound); |
| 107 | |
| 108 | if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor)) |
| 109 | av_log(ctx, level, ", max: %i", (int)h->UpperBound); |
| 110 | |
| 111 | if (print) |
| 112 | av_log(ctx, level, " (value %d)", (int)values[ctl]); |
| 113 | else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor)) |
| 114 | av_log(ctx, level, " (default %d)", (int)values[ctl]); |
| 115 | } else { |
| 116 | av_log(ctx, level, "<float>"); |
| 117 | |
| 118 | if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor)) |
| 119 | av_log(ctx, level, ", min: %f", h->LowerBound); |
| 120 | |
| 121 | if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor)) |
| 122 | av_log(ctx, level, ", max: %f", h->UpperBound); |
| 123 | |
| 124 | if (print) |
| 125 | av_log(ctx, level, " (value %f)", values[ctl]); |
| 126 | else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor)) |
| 127 | av_log(ctx, level, " (default %f)", values[ctl]); |
| 128 | } |
| 129 | |
| 130 | if (LADSPA_IS_HINT_SAMPLE_RATE(h->HintDescriptor)) |
| 131 | av_log(ctx, level, ", multiple of sample rate"); |
| 132 | |
| 133 | if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor)) |
| 134 | av_log(ctx, level, ", logarithmic scale"); |
| 135 | } |
| 136 | |
| 137 | av_log(ctx, level, "]\n"); |
| 138 | } |
| 139 | |
| 140 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| 141 | { |
| 142 | AVFilterContext *ctx = inlink->dst; |
| 143 | LADSPAContext *s = ctx->priv; |
| 144 | AVFrame *out; |
| 145 | int i, h; |
| 146 | |
| 147 | if (!s->nb_outputs || |
| 148 | (av_frame_is_writable(in) && s->nb_inputs == s->nb_outputs && |
| 149 | !(s->desc->Properties & LADSPA_PROPERTY_INPLACE_BROKEN))) { |
| 150 | out = in; |
| 151 | } else { |
| 152 | out = ff_get_audio_buffer(ctx->outputs[0], in->nb_samples); |
| 153 | if (!out) { |
| 154 | av_frame_free(&in); |
| 155 | return AVERROR(ENOMEM); |
| 156 | } |
| 157 | av_frame_copy_props(out, in); |
| 158 | } |
| 159 | |
| 160 | for (h = 0; h < s->nb_handles; h++) { |
| 161 | for (i = 0; i < s->nb_inputs; i++) { |
| 162 | s->desc->connect_port(s->handles[h], s->ipmap[i], |
| 163 | (LADSPA_Data*)in->extended_data[i]); |
| 164 | } |
| 165 | |
| 166 | for (i = 0; i < s->nb_outputs; i++) { |
| 167 | s->desc->connect_port(s->handles[h], s->opmap[i], |
| 168 | (LADSPA_Data*)out->extended_data[i]); |
| 169 | } |
| 170 | |
| 171 | s->desc->run(s->handles[h], in->nb_samples); |
| 172 | } |
| 173 | |
| 174 | for (i = 0; i < s->nb_outputcontrols; i++) |
| 175 | print_ctl_info(ctx, AV_LOG_VERBOSE, s, i, s->ocmap, s->octlv, 1); |
| 176 | |
| 177 | if (out != in) |
| 178 | av_frame_free(&in); |
| 179 | |
| 180 | return ff_filter_frame(ctx->outputs[0], out); |
| 181 | } |
| 182 | |
| 183 | static int request_frame(AVFilterLink *outlink) |
| 184 | { |
| 185 | AVFilterContext *ctx = outlink->src; |
| 186 | LADSPAContext *s = ctx->priv; |
| 187 | AVFrame *out; |
| 188 | int64_t t; |
| 189 | int i; |
| 190 | |
| 191 | if (ctx->nb_inputs) |
| 192 | return ff_request_frame(ctx->inputs[0]); |
| 193 | |
| 194 | t = av_rescale(s->pts, AV_TIME_BASE, s->sample_rate); |
| 195 | if (s->duration >= 0 && t >= s->duration) |
| 196 | return AVERROR_EOF; |
| 197 | |
| 198 | out = ff_get_audio_buffer(outlink, s->nb_samples); |
| 199 | if (!out) |
| 200 | return AVERROR(ENOMEM); |
| 201 | |
| 202 | for (i = 0; i < s->nb_outputs; i++) |
| 203 | s->desc->connect_port(s->handles[0], s->opmap[i], |
| 204 | (LADSPA_Data*)out->extended_data[i]); |
| 205 | |
| 206 | s->desc->run(s->handles[0], s->nb_samples); |
| 207 | |
| 208 | for (i = 0; i < s->nb_outputcontrols; i++) |
| 209 | print_ctl_info(ctx, AV_LOG_INFO, s, i, s->ocmap, s->octlv, 1); |
| 210 | |
| 211 | out->sample_rate = s->sample_rate; |
| 212 | out->pts = s->pts; |
| 213 | s->pts += s->nb_samples; |
| 214 | |
| 215 | return ff_filter_frame(outlink, out); |
| 216 | } |
| 217 | |
| 218 | static void set_default_ctl_value(LADSPAContext *s, int ctl, |
| 219 | unsigned long *map, LADSPA_Data *values) |
| 220 | { |
| 221 | const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl]; |
| 222 | const LADSPA_Data lower = h->LowerBound; |
| 223 | const LADSPA_Data upper = h->UpperBound; |
| 224 | |
| 225 | if (LADSPA_IS_HINT_DEFAULT_MINIMUM(h->HintDescriptor)) { |
| 226 | values[ctl] = lower; |
| 227 | } else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(h->HintDescriptor)) { |
| 228 | values[ctl] = upper; |
| 229 | } else if (LADSPA_IS_HINT_DEFAULT_0(h->HintDescriptor)) { |
| 230 | values[ctl] = 0.0; |
| 231 | } else if (LADSPA_IS_HINT_DEFAULT_1(h->HintDescriptor)) { |
| 232 | values[ctl] = 1.0; |
| 233 | } else if (LADSPA_IS_HINT_DEFAULT_100(h->HintDescriptor)) { |
| 234 | values[ctl] = 100.0; |
| 235 | } else if (LADSPA_IS_HINT_DEFAULT_440(h->HintDescriptor)) { |
| 236 | values[ctl] = 440.0; |
| 237 | } else if (LADSPA_IS_HINT_DEFAULT_LOW(h->HintDescriptor)) { |
| 238 | if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor)) |
| 239 | values[ctl] = exp(log(lower) * 0.75 + log(upper) * 0.25); |
| 240 | else |
| 241 | values[ctl] = lower * 0.75 + upper * 0.25; |
| 242 | } else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(h->HintDescriptor)) { |
| 243 | if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor)) |
| 244 | values[ctl] = exp(log(lower) * 0.5 + log(upper) * 0.5); |
| 245 | else |
| 246 | values[ctl] = lower * 0.5 + upper * 0.5; |
| 247 | } else if (LADSPA_IS_HINT_DEFAULT_HIGH(h->HintDescriptor)) { |
| 248 | if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor)) |
| 249 | values[ctl] = exp(log(lower) * 0.25 + log(upper) * 0.75); |
| 250 | else |
| 251 | values[ctl] = lower * 0.25 + upper * 0.75; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | static int connect_ports(AVFilterContext *ctx, AVFilterLink *link) |
| 256 | { |
| 257 | LADSPAContext *s = ctx->priv; |
| 258 | int i, j; |
| 259 | |
| 260 | s->nb_handles = s->nb_inputs == 1 && s->nb_outputs == 1 ? link->channels : 1; |
| 261 | s->handles = av_calloc(s->nb_handles, sizeof(*s->handles)); |
| 262 | if (!s->handles) |
| 263 | return AVERROR(ENOMEM); |
| 264 | |
| 265 | for (i = 0; i < s->nb_handles; i++) { |
| 266 | s->handles[i] = s->desc->instantiate(s->desc, link->sample_rate); |
| 267 | if (!s->handles[i]) { |
| 268 | av_log(ctx, AV_LOG_ERROR, "Could not instantiate plugin.\n"); |
| 269 | return AVERROR_EXTERNAL; |
| 270 | } |
| 271 | |
| 272 | // Connect the input control ports |
| 273 | for (j = 0; j < s->nb_inputcontrols; j++) |
| 274 | s->desc->connect_port(s->handles[i], s->icmap[j], s->ictlv + j); |
| 275 | |
| 276 | // Connect the output control ports |
| 277 | for (j = 0; j < s->nb_outputcontrols; j++) |
| 278 | s->desc->connect_port(s->handles[i], s->ocmap[j], &s->octlv[j]); |
| 279 | |
| 280 | if (s->desc->activate) |
| 281 | s->desc->activate(s->handles[i]); |
| 282 | } |
| 283 | |
| 284 | av_log(ctx, AV_LOG_DEBUG, "handles: %d\n", s->nb_handles); |
| 285 | |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static int config_input(AVFilterLink *inlink) |
| 290 | { |
| 291 | AVFilterContext *ctx = inlink->dst; |
| 292 | |
| 293 | return connect_ports(ctx, inlink); |
| 294 | } |
| 295 | |
| 296 | static int config_output(AVFilterLink *outlink) |
| 297 | { |
| 298 | AVFilterContext *ctx = outlink->src; |
| 299 | int ret; |
| 300 | |
| 301 | if (ctx->nb_inputs) { |
| 302 | AVFilterLink *inlink = ctx->inputs[0]; |
| 303 | |
| 304 | outlink->format = inlink->format; |
| 305 | outlink->sample_rate = inlink->sample_rate; |
| 306 | |
| 307 | ret = 0; |
| 308 | } else { |
| 309 | LADSPAContext *s = ctx->priv; |
| 310 | |
| 311 | outlink->sample_rate = s->sample_rate; |
| 312 | outlink->time_base = (AVRational){1, s->sample_rate}; |
| 313 | |
| 314 | ret = connect_ports(ctx, outlink); |
| 315 | } |
| 316 | |
| 317 | return ret; |
| 318 | } |
| 319 | |
| 320 | static void count_ports(const LADSPA_Descriptor *desc, |
| 321 | unsigned long *nb_inputs, unsigned long *nb_outputs) |
| 322 | { |
| 323 | LADSPA_PortDescriptor pd; |
| 324 | int i; |
| 325 | |
| 326 | for (i = 0; i < desc->PortCount; i++) { |
| 327 | pd = desc->PortDescriptors[i]; |
| 328 | |
| 329 | if (LADSPA_IS_PORT_AUDIO(pd)) { |
| 330 | if (LADSPA_IS_PORT_INPUT(pd)) { |
| 331 | (*nb_inputs)++; |
| 332 | } else if (LADSPA_IS_PORT_OUTPUT(pd)) { |
| 333 | (*nb_outputs)++; |
| 334 | } |
| 335 | } |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | static void *try_load(const char *dir, const char *soname) |
| 340 | { |
| 341 | char *path = av_asprintf("%s/%s.so", dir, soname); |
| 342 | void *ret = NULL; |
| 343 | |
| 344 | if (path) { |
| 345 | ret = dlopen(path, RTLD_LOCAL|RTLD_NOW); |
| 346 | av_free(path); |
| 347 | } |
| 348 | |
| 349 | return ret; |
| 350 | } |
| 351 | |
| 352 | static int set_control(AVFilterContext *ctx, unsigned long port, LADSPA_Data value) |
| 353 | { |
| 354 | LADSPAContext *s = ctx->priv; |
| 355 | const char *label = s->desc->Label; |
| 356 | LADSPA_PortRangeHint *h = (LADSPA_PortRangeHint *)s->desc->PortRangeHints + |
| 357 | s->icmap[port]; |
| 358 | |
| 359 | if (port >= s->nb_inputcontrols) { |
| 360 | av_log(ctx, AV_LOG_ERROR, "Control c%ld is out of range [0 - %lu].\n", |
| 361 | port, s->nb_inputcontrols); |
| 362 | return AVERROR(EINVAL); |
| 363 | } |
| 364 | |
| 365 | if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor) && |
| 366 | value < h->LowerBound) { |
| 367 | av_log(ctx, AV_LOG_ERROR, |
| 368 | "%s: input control c%ld is below lower boundary of %0.4f.\n", |
| 369 | label, port, h->LowerBound); |
| 370 | return AVERROR(EINVAL); |
| 371 | } |
| 372 | |
| 373 | if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor) && |
| 374 | value > h->UpperBound) { |
| 375 | av_log(ctx, AV_LOG_ERROR, |
| 376 | "%s: input control c%ld is above upper boundary of %0.4f.\n", |
| 377 | label, port, h->UpperBound); |
| 378 | return AVERROR(EINVAL); |
| 379 | } |
| 380 | |
| 381 | s->ictlv[port] = value; |
| 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | static av_cold int init(AVFilterContext *ctx) |
| 387 | { |
| 388 | LADSPAContext *s = ctx->priv; |
| 389 | LADSPA_Descriptor_Function descriptor_fn; |
| 390 | const LADSPA_Descriptor *desc; |
| 391 | LADSPA_PortDescriptor pd; |
| 392 | AVFilterPad pad = { NULL }; |
| 393 | char *p, *arg, *saveptr = NULL; |
| 394 | unsigned long nb_ports; |
| 395 | int i; |
| 396 | |
| 397 | if (!s->dl_name) { |
| 398 | av_log(ctx, AV_LOG_ERROR, "No plugin name provided\n"); |
| 399 | return AVERROR(EINVAL); |
| 400 | } |
| 401 | |
| 402 | if (s->dl_name[0] == '/' || s->dl_name[0] == '.') { |
| 403 | // argument is a path |
| 404 | s->dl_handle = dlopen(s->dl_name, RTLD_LOCAL|RTLD_NOW); |
| 405 | } else { |
| 406 | // argument is a shared object name |
| 407 | char *paths = av_strdup(getenv("LADSPA_PATH")); |
| 408 | const char *separator = ":"; |
| 409 | |
| 410 | if (paths) { |
| 411 | p = paths; |
| 412 | while ((arg = av_strtok(p, separator, &saveptr)) && !s->dl_handle) { |
| 413 | s->dl_handle = try_load(arg, s->dl_name); |
| 414 | p = NULL; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | av_free(paths); |
| 419 | if (!s->dl_handle && (paths = av_asprintf("%s/.ladspa/lib", getenv("HOME")))) { |
| 420 | s->dl_handle = try_load(paths, s->dl_name); |
| 421 | av_free(paths); |
| 422 | } |
| 423 | |
| 424 | if (!s->dl_handle) |
| 425 | s->dl_handle = try_load("/usr/local/lib/ladspa", s->dl_name); |
| 426 | |
| 427 | if (!s->dl_handle) |
| 428 | s->dl_handle = try_load("/usr/lib/ladspa", s->dl_name); |
| 429 | } |
| 430 | if (!s->dl_handle) { |
| 431 | av_log(ctx, AV_LOG_ERROR, "Failed to load '%s'\n", s->dl_name); |
| 432 | return AVERROR(EINVAL); |
| 433 | } |
| 434 | |
| 435 | descriptor_fn = dlsym(s->dl_handle, "ladspa_descriptor"); |
| 436 | if (!descriptor_fn) { |
| 437 | av_log(ctx, AV_LOG_ERROR, "Could not find ladspa_descriptor: %s\n", dlerror()); |
| 438 | return AVERROR(EINVAL); |
| 439 | } |
| 440 | |
| 441 | // Find the requested plugin, or list plugins |
| 442 | if (!s->plugin) { |
| 443 | av_log(ctx, AV_LOG_INFO, "The '%s' library contains the following plugins:\n", s->dl_name); |
| 444 | av_log(ctx, AV_LOG_INFO, "I = Input Channels\n"); |
| 445 | av_log(ctx, AV_LOG_INFO, "O = Output Channels\n"); |
| 446 | av_log(ctx, AV_LOG_INFO, "I:O %-25s %s\n", "Plugin", "Description"); |
| 447 | av_log(ctx, AV_LOG_INFO, "\n"); |
| 448 | for (i = 0; desc = descriptor_fn(i); i++) { |
| 449 | unsigned long inputs = 0, outputs = 0; |
| 450 | |
| 451 | count_ports(desc, &inputs, &outputs); |
| 452 | av_log(ctx, AV_LOG_INFO, "%lu:%lu %-25s %s\n", inputs, outputs, desc->Label, |
| 453 | (char *)av_x_if_null(desc->Name, "?")); |
| 454 | av_log(ctx, AV_LOG_VERBOSE, "Maker: %s\n", |
| 455 | (char *)av_x_if_null(desc->Maker, "?")); |
| 456 | av_log(ctx, AV_LOG_VERBOSE, "Copyright: %s\n", |
| 457 | (char *)av_x_if_null(desc->Copyright, "?")); |
| 458 | } |
| 459 | return AVERROR_EXIT; |
| 460 | } else { |
| 461 | for (i = 0;; i++) { |
| 462 | desc = descriptor_fn(i); |
| 463 | if (!desc) { |
| 464 | av_log(ctx, AV_LOG_ERROR, "Could not find plugin: %s\n", s->plugin); |
| 465 | return AVERROR(EINVAL); |
| 466 | } |
| 467 | |
| 468 | if (desc->Label && !strcmp(desc->Label, s->plugin)) |
| 469 | break; |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | s->desc = desc; |
| 474 | nb_ports = desc->PortCount; |
| 475 | |
| 476 | s->ipmap = av_calloc(nb_ports, sizeof(*s->ipmap)); |
| 477 | s->opmap = av_calloc(nb_ports, sizeof(*s->opmap)); |
| 478 | s->icmap = av_calloc(nb_ports, sizeof(*s->icmap)); |
| 479 | s->ocmap = av_calloc(nb_ports, sizeof(*s->ocmap)); |
| 480 | s->ictlv = av_calloc(nb_ports, sizeof(*s->ictlv)); |
| 481 | s->octlv = av_calloc(nb_ports, sizeof(*s->octlv)); |
| 482 | s->ctl_needs_value = av_calloc(nb_ports, sizeof(*s->ctl_needs_value)); |
| 483 | if (!s->ipmap || !s->opmap || !s->icmap || |
| 484 | !s->ocmap || !s->ictlv || !s->octlv || !s->ctl_needs_value) |
| 485 | return AVERROR(ENOMEM); |
| 486 | |
| 487 | for (i = 0; i < nb_ports; i++) { |
| 488 | pd = desc->PortDescriptors[i]; |
| 489 | |
| 490 | if (LADSPA_IS_PORT_AUDIO(pd)) { |
| 491 | if (LADSPA_IS_PORT_INPUT(pd)) { |
| 492 | s->ipmap[s->nb_inputs] = i; |
| 493 | s->nb_inputs++; |
| 494 | } else if (LADSPA_IS_PORT_OUTPUT(pd)) { |
| 495 | s->opmap[s->nb_outputs] = i; |
| 496 | s->nb_outputs++; |
| 497 | } |
| 498 | } else if (LADSPA_IS_PORT_CONTROL(pd)) { |
| 499 | if (LADSPA_IS_PORT_INPUT(pd)) { |
| 500 | s->icmap[s->nb_inputcontrols] = i; |
| 501 | |
| 502 | if (LADSPA_IS_HINT_HAS_DEFAULT(desc->PortRangeHints[i].HintDescriptor)) |
| 503 | set_default_ctl_value(s, s->nb_inputcontrols, s->icmap, s->ictlv); |
| 504 | else |
| 505 | s->ctl_needs_value[s->nb_inputcontrols] = 1; |
| 506 | |
| 507 | s->nb_inputcontrols++; |
| 508 | } else if (LADSPA_IS_PORT_OUTPUT(pd)) { |
| 509 | s->ocmap[s->nb_outputcontrols] = i; |
| 510 | s->nb_outputcontrols++; |
| 511 | } |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | // List Control Ports if "help" is specified |
| 516 | if (s->options && !strcmp(s->options, "help")) { |
| 517 | if (!s->nb_inputcontrols) { |
| 518 | av_log(ctx, AV_LOG_INFO, |
| 519 | "The '%s' plugin does not have any input controls.\n", |
| 520 | desc->Label); |
| 521 | } else { |
| 522 | av_log(ctx, AV_LOG_INFO, |
| 523 | "The '%s' plugin has the following input controls:\n", |
| 524 | desc->Label); |
| 525 | for (i = 0; i < s->nb_inputcontrols; i++) |
| 526 | print_ctl_info(ctx, AV_LOG_INFO, s, i, s->icmap, s->ictlv, 0); |
| 527 | } |
| 528 | return AVERROR_EXIT; |
| 529 | } |
| 530 | |
| 531 | // Parse control parameters |
| 532 | p = s->options; |
| 533 | while (s->options) { |
| 534 | LADSPA_Data val; |
| 535 | int ret; |
| 536 | |
| 537 | if (!(arg = av_strtok(p, "|", &saveptr))) |
| 538 | break; |
| 539 | p = NULL; |
| 540 | |
| 541 | if (sscanf(arg, "c%d=%f", &i, &val) != 2) { |
| 542 | av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n"); |
| 543 | return AVERROR(EINVAL); |
| 544 | } |
| 545 | |
| 546 | if ((ret = set_control(ctx, i, val)) < 0) |
| 547 | return ret; |
| 548 | s->ctl_needs_value[i] = 0; |
| 549 | } |
| 550 | |
| 551 | // Check if any controls are not set |
| 552 | for (i = 0; i < s->nb_inputcontrols; i++) { |
| 553 | if (s->ctl_needs_value[i]) { |
| 554 | av_log(ctx, AV_LOG_ERROR, "Control c%d must be set.\n", i); |
| 555 | print_ctl_info(ctx, AV_LOG_ERROR, s, i, s->icmap, s->ictlv, 0); |
| 556 | return AVERROR(EINVAL); |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | pad.type = AVMEDIA_TYPE_AUDIO; |
| 561 | |
| 562 | if (s->nb_inputs) { |
| 563 | pad.name = av_asprintf("in0:%s%lu", desc->Label, s->nb_inputs); |
| 564 | if (!pad.name) |
| 565 | return AVERROR(ENOMEM); |
| 566 | |
| 567 | pad.filter_frame = filter_frame; |
| 568 | pad.config_props = config_input; |
| 569 | if (ff_insert_inpad(ctx, ctx->nb_inputs, &pad) < 0) { |
| 570 | av_freep(&pad.name); |
| 571 | return AVERROR(ENOMEM); |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | av_log(ctx, AV_LOG_DEBUG, "ports: %lu\n", nb_ports); |
| 576 | av_log(ctx, AV_LOG_DEBUG, "inputs: %lu outputs: %lu\n", |
| 577 | s->nb_inputs, s->nb_outputs); |
| 578 | av_log(ctx, AV_LOG_DEBUG, "input controls: %lu output controls: %lu\n", |
| 579 | s->nb_inputcontrols, s->nb_outputcontrols); |
| 580 | |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | static int query_formats(AVFilterContext *ctx) |
| 585 | { |
| 586 | LADSPAContext *s = ctx->priv; |
| 587 | AVFilterFormats *formats; |
| 588 | AVFilterChannelLayouts *layouts; |
| 589 | static const enum AVSampleFormat sample_fmts[] = { |
| 590 | AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE }; |
| 591 | |
| 592 | formats = ff_make_format_list(sample_fmts); |
| 593 | if (!formats) |
| 594 | return AVERROR(ENOMEM); |
| 595 | ff_set_common_formats(ctx, formats); |
| 596 | |
| 597 | if (s->nb_inputs) { |
| 598 | formats = ff_all_samplerates(); |
| 599 | if (!formats) |
| 600 | return AVERROR(ENOMEM); |
| 601 | |
| 602 | ff_set_common_samplerates(ctx, formats); |
| 603 | } else { |
| 604 | int sample_rates[] = { s->sample_rate, -1 }; |
| 605 | |
| 606 | ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates)); |
| 607 | } |
| 608 | |
| 609 | if (s->nb_inputs == 1 && s->nb_outputs == 1) { |
| 610 | // We will instantiate multiple LADSPA_Handle, one over each channel |
| 611 | layouts = ff_all_channel_layouts(); |
| 612 | if (!layouts) |
| 613 | return AVERROR(ENOMEM); |
| 614 | |
| 615 | ff_set_common_channel_layouts(ctx, layouts); |
| 616 | } else { |
| 617 | AVFilterLink *outlink = ctx->outputs[0]; |
| 618 | |
| 619 | if (s->nb_inputs >= 1) { |
| 620 | AVFilterLink *inlink = ctx->inputs[0]; |
| 621 | int64_t inlayout = FF_COUNT2LAYOUT(s->nb_inputs); |
| 622 | |
| 623 | layouts = NULL; |
| 624 | ff_add_channel_layout(&layouts, inlayout); |
| 625 | ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts); |
| 626 | |
| 627 | if (!s->nb_outputs) |
| 628 | ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts); |
| 629 | } |
| 630 | |
| 631 | if (s->nb_outputs >= 1) { |
| 632 | int64_t outlayout = FF_COUNT2LAYOUT(s->nb_outputs); |
| 633 | |
| 634 | layouts = NULL; |
| 635 | ff_add_channel_layout(&layouts, outlayout); |
| 636 | ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts); |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | return 0; |
| 641 | } |
| 642 | |
| 643 | static av_cold void uninit(AVFilterContext *ctx) |
| 644 | { |
| 645 | LADSPAContext *s = ctx->priv; |
| 646 | int i; |
| 647 | |
| 648 | for (i = 0; i < s->nb_handles; i++) { |
| 649 | if (s->desc->deactivate) |
| 650 | s->desc->deactivate(s->handles[i]); |
| 651 | if (s->desc->cleanup) |
| 652 | s->desc->cleanup(s->handles[i]); |
| 653 | } |
| 654 | |
| 655 | if (s->dl_handle) |
| 656 | dlclose(s->dl_handle); |
| 657 | |
| 658 | av_freep(&s->ipmap); |
| 659 | av_freep(&s->opmap); |
| 660 | av_freep(&s->icmap); |
| 661 | av_freep(&s->ocmap); |
| 662 | av_freep(&s->ictlv); |
| 663 | av_freep(&s->octlv); |
| 664 | av_freep(&s->handles); |
| 665 | av_freep(&s->ctl_needs_value); |
| 666 | |
| 667 | if (ctx->nb_inputs) |
| 668 | av_freep(&ctx->input_pads[0].name); |
| 669 | } |
| 670 | |
| 671 | static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
| 672 | char *res, int res_len, int flags) |
| 673 | { |
| 674 | LADSPA_Data value; |
| 675 | unsigned long port; |
| 676 | |
| 677 | if (sscanf(cmd, "c%ld", &port) + sscanf(args, "%f", &value) != 2) |
| 678 | return AVERROR(EINVAL); |
| 679 | |
| 680 | return set_control(ctx, port, value); |
| 681 | } |
| 682 | |
| 683 | static const AVFilterPad ladspa_outputs[] = { |
| 684 | { |
| 685 | .name = "default", |
| 686 | .type = AVMEDIA_TYPE_AUDIO, |
| 687 | .config_props = config_output, |
| 688 | .request_frame = request_frame, |
| 689 | }, |
| 690 | { NULL } |
| 691 | }; |
| 692 | |
| 693 | AVFilter ff_af_ladspa = { |
| 694 | .name = "ladspa", |
| 695 | .description = NULL_IF_CONFIG_SMALL("Apply LADSPA effect."), |
| 696 | .priv_size = sizeof(LADSPAContext), |
| 697 | .priv_class = &ladspa_class, |
| 698 | .init = init, |
| 699 | .uninit = uninit, |
| 700 | .query_formats = query_formats, |
| 701 | .process_command = process_command, |
| 702 | .inputs = 0, |
| 703 | .outputs = ladspa_outputs, |
| 704 | .flags = AVFILTER_FLAG_DYNAMIC_INPUTS, |
| 705 | }; |