| 1 | /* |
| 2 | * filter graphs |
| 3 | * Copyright (c) 2008 Vitor Sessak |
| 4 | * Copyright (c) 2007 Bobby Bingham |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (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 GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include "config.h" |
| 24 | |
| 25 | #include <string.h> |
| 26 | |
| 27 | #include "libavutil/avassert.h" |
| 28 | #include "libavutil/avstring.h" |
| 29 | #include "libavutil/bprint.h" |
| 30 | #include "libavutil/channel_layout.h" |
| 31 | #include "libavutil/internal.h" |
| 32 | #include "libavutil/opt.h" |
| 33 | #include "libavutil/pixdesc.h" |
| 34 | |
| 35 | #include "avfilter.h" |
| 36 | #include "formats.h" |
| 37 | #include "internal.h" |
| 38 | #include "thread.h" |
| 39 | |
| 40 | #define OFFSET(x) offsetof(AVFilterGraph, x) |
| 41 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
| 42 | static const AVOption filtergraph_options[] = { |
| 43 | { "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS, |
| 44 | { .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, FLAGS, "thread_type" }, |
| 45 | { "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .flags = FLAGS, .unit = "thread_type" }, |
| 46 | { "threads", "Maximum number of threads", OFFSET(nb_threads), |
| 47 | AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, |
| 48 | {"scale_sws_opts" , "default scale filter options" , OFFSET(scale_sws_opts) , |
| 49 | AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, |
| 50 | {"aresample_swr_opts" , "default aresample filter options" , OFFSET(aresample_swr_opts) , |
| 51 | AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, |
| 52 | { NULL }, |
| 53 | }; |
| 54 | |
| 55 | static const AVClass filtergraph_class = { |
| 56 | .class_name = "AVFilterGraph", |
| 57 | .item_name = av_default_item_name, |
| 58 | .version = LIBAVUTIL_VERSION_INT, |
| 59 | .option = filtergraph_options, |
| 60 | .category = AV_CLASS_CATEGORY_FILTER, |
| 61 | }; |
| 62 | |
| 63 | #if !HAVE_THREADS |
| 64 | void ff_graph_thread_free(AVFilterGraph *graph) |
| 65 | { |
| 66 | } |
| 67 | |
| 68 | int ff_graph_thread_init(AVFilterGraph *graph) |
| 69 | { |
| 70 | graph->thread_type = 0; |
| 71 | graph->nb_threads = 1; |
| 72 | return 0; |
| 73 | } |
| 74 | #endif |
| 75 | |
| 76 | AVFilterGraph *avfilter_graph_alloc(void) |
| 77 | { |
| 78 | AVFilterGraph *ret = av_mallocz(sizeof(*ret)); |
| 79 | if (!ret) |
| 80 | return NULL; |
| 81 | |
| 82 | ret->internal = av_mallocz(sizeof(*ret->internal)); |
| 83 | if (!ret->internal) { |
| 84 | av_freep(&ret); |
| 85 | return NULL; |
| 86 | } |
| 87 | |
| 88 | ret->av_class = &filtergraph_class; |
| 89 | av_opt_set_defaults(ret); |
| 90 | |
| 91 | return ret; |
| 92 | } |
| 93 | |
| 94 | void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter) |
| 95 | { |
| 96 | int i; |
| 97 | for (i = 0; i < graph->nb_filters; i++) { |
| 98 | if (graph->filters[i] == filter) { |
| 99 | FFSWAP(AVFilterContext*, graph->filters[i], |
| 100 | graph->filters[graph->nb_filters - 1]); |
| 101 | graph->nb_filters--; |
| 102 | return; |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | void avfilter_graph_free(AVFilterGraph **graph) |
| 108 | { |
| 109 | if (!*graph) |
| 110 | return; |
| 111 | |
| 112 | while ((*graph)->nb_filters) |
| 113 | avfilter_free((*graph)->filters[0]); |
| 114 | |
| 115 | ff_graph_thread_free(*graph); |
| 116 | |
| 117 | av_freep(&(*graph)->sink_links); |
| 118 | |
| 119 | av_freep(&(*graph)->scale_sws_opts); |
| 120 | av_freep(&(*graph)->aresample_swr_opts); |
| 121 | av_freep(&(*graph)->resample_lavr_opts); |
| 122 | av_freep(&(*graph)->filters); |
| 123 | av_freep(&(*graph)->internal); |
| 124 | av_freep(graph); |
| 125 | } |
| 126 | |
| 127 | #if FF_API_AVFILTER_OPEN |
| 128 | int avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter) |
| 129 | { |
| 130 | AVFilterContext **filters = av_realloc(graph->filters, |
| 131 | sizeof(*filters) * (graph->nb_filters + 1)); |
| 132 | if (!filters) |
| 133 | return AVERROR(ENOMEM); |
| 134 | |
| 135 | graph->filters = filters; |
| 136 | graph->filters[graph->nb_filters++] = filter; |
| 137 | |
| 138 | #if FF_API_FOO_COUNT |
| 139 | FF_DISABLE_DEPRECATION_WARNINGS |
| 140 | graph->filter_count_unused = graph->nb_filters; |
| 141 | FF_ENABLE_DEPRECATION_WARNINGS |
| 142 | #endif |
| 143 | |
| 144 | filter->graph = graph; |
| 145 | |
| 146 | return 0; |
| 147 | } |
| 148 | #endif |
| 149 | |
| 150 | int avfilter_graph_create_filter(AVFilterContext **filt_ctx, const AVFilter *filt, |
| 151 | const char *name, const char *args, void *opaque, |
| 152 | AVFilterGraph *graph_ctx) |
| 153 | { |
| 154 | int ret; |
| 155 | |
| 156 | *filt_ctx = avfilter_graph_alloc_filter(graph_ctx, filt, name); |
| 157 | if (!*filt_ctx) |
| 158 | return AVERROR(ENOMEM); |
| 159 | |
| 160 | ret = avfilter_init_str(*filt_ctx, args); |
| 161 | if (ret < 0) |
| 162 | goto fail; |
| 163 | |
| 164 | return 0; |
| 165 | |
| 166 | fail: |
| 167 | if (*filt_ctx) |
| 168 | avfilter_free(*filt_ctx); |
| 169 | *filt_ctx = NULL; |
| 170 | return ret; |
| 171 | } |
| 172 | |
| 173 | void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags) |
| 174 | { |
| 175 | graph->disable_auto_convert = flags; |
| 176 | } |
| 177 | |
| 178 | AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph, |
| 179 | const AVFilter *filter, |
| 180 | const char *name) |
| 181 | { |
| 182 | AVFilterContext **filters, *s; |
| 183 | |
| 184 | if (graph->thread_type && !graph->internal->thread_execute) { |
| 185 | if (graph->execute) { |
| 186 | graph->internal->thread_execute = graph->execute; |
| 187 | } else { |
| 188 | int ret = ff_graph_thread_init(graph); |
| 189 | if (ret < 0) { |
| 190 | av_log(graph, AV_LOG_ERROR, "Error initializing threading.\n"); |
| 191 | return NULL; |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | s = ff_filter_alloc(filter, name); |
| 197 | if (!s) |
| 198 | return NULL; |
| 199 | |
| 200 | filters = av_realloc(graph->filters, sizeof(*filters) * (graph->nb_filters + 1)); |
| 201 | if (!filters) { |
| 202 | avfilter_free(s); |
| 203 | return NULL; |
| 204 | } |
| 205 | |
| 206 | graph->filters = filters; |
| 207 | graph->filters[graph->nb_filters++] = s; |
| 208 | |
| 209 | #if FF_API_FOO_COUNT |
| 210 | FF_DISABLE_DEPRECATION_WARNINGS |
| 211 | graph->filter_count_unused = graph->nb_filters; |
| 212 | FF_ENABLE_DEPRECATION_WARNINGS |
| 213 | #endif |
| 214 | |
| 215 | s->graph = graph; |
| 216 | |
| 217 | return s; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Check for the validity of graph. |
| 222 | * |
| 223 | * A graph is considered valid if all its input and output pads are |
| 224 | * connected. |
| 225 | * |
| 226 | * @return >= 0 in case of success, a negative value otherwise |
| 227 | */ |
| 228 | static int graph_check_validity(AVFilterGraph *graph, AVClass *log_ctx) |
| 229 | { |
| 230 | AVFilterContext *filt; |
| 231 | int i, j; |
| 232 | |
| 233 | for (i = 0; i < graph->nb_filters; i++) { |
| 234 | const AVFilterPad *pad; |
| 235 | filt = graph->filters[i]; |
| 236 | |
| 237 | for (j = 0; j < filt->nb_inputs; j++) { |
| 238 | if (!filt->inputs[j] || !filt->inputs[j]->src) { |
| 239 | pad = &filt->input_pads[j]; |
| 240 | av_log(log_ctx, AV_LOG_ERROR, |
| 241 | "Input pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any source\n", |
| 242 | pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name); |
| 243 | return AVERROR(EINVAL); |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | for (j = 0; j < filt->nb_outputs; j++) { |
| 248 | if (!filt->outputs[j] || !filt->outputs[j]->dst) { |
| 249 | pad = &filt->output_pads[j]; |
| 250 | av_log(log_ctx, AV_LOG_ERROR, |
| 251 | "Output pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any destination\n", |
| 252 | pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name); |
| 253 | return AVERROR(EINVAL); |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Configure all the links of graphctx. |
| 263 | * |
| 264 | * @return >= 0 in case of success, a negative value otherwise |
| 265 | */ |
| 266 | static int graph_config_links(AVFilterGraph *graph, AVClass *log_ctx) |
| 267 | { |
| 268 | AVFilterContext *filt; |
| 269 | int i, ret; |
| 270 | |
| 271 | for (i = 0; i < graph->nb_filters; i++) { |
| 272 | filt = graph->filters[i]; |
| 273 | |
| 274 | if (!filt->nb_outputs) { |
| 275 | if ((ret = avfilter_config_links(filt))) |
| 276 | return ret; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, const char *name) |
| 284 | { |
| 285 | int i; |
| 286 | |
| 287 | for (i = 0; i < graph->nb_filters; i++) |
| 288 | if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name)) |
| 289 | return graph->filters[i]; |
| 290 | |
| 291 | return NULL; |
| 292 | } |
| 293 | |
| 294 | static void sanitize_channel_layouts(void *log, AVFilterChannelLayouts *l) |
| 295 | { |
| 296 | if (!l) |
| 297 | return; |
| 298 | if (l->nb_channel_layouts) { |
| 299 | if (l->all_layouts || l->all_counts) |
| 300 | av_log(log, AV_LOG_WARNING, "All layouts set on non-empty list\n"); |
| 301 | l->all_layouts = l->all_counts = 0; |
| 302 | } else { |
| 303 | if (l->all_counts && !l->all_layouts) |
| 304 | av_log(log, AV_LOG_WARNING, "All counts without all layouts\n"); |
| 305 | l->all_layouts = 1; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | static int filter_query_formats(AVFilterContext *ctx) |
| 310 | { |
| 311 | int ret, i; |
| 312 | AVFilterFormats *formats; |
| 313 | AVFilterChannelLayouts *chlayouts; |
| 314 | AVFilterFormats *samplerates; |
| 315 | enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type : |
| 316 | ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type : |
| 317 | AVMEDIA_TYPE_VIDEO; |
| 318 | |
| 319 | if ((ret = ctx->filter->query_formats(ctx)) < 0) { |
| 320 | if (ret != AVERROR(EAGAIN)) |
| 321 | av_log(ctx, AV_LOG_ERROR, "Query format failed for '%s': %s\n", |
| 322 | ctx->name, av_err2str(ret)); |
| 323 | return ret; |
| 324 | } |
| 325 | |
| 326 | for (i = 0; i < ctx->nb_inputs; i++) |
| 327 | sanitize_channel_layouts(ctx, ctx->inputs[i]->out_channel_layouts); |
| 328 | for (i = 0; i < ctx->nb_outputs; i++) |
| 329 | sanitize_channel_layouts(ctx, ctx->outputs[i]->in_channel_layouts); |
| 330 | |
| 331 | formats = ff_all_formats(type); |
| 332 | if (!formats) |
| 333 | return AVERROR(ENOMEM); |
| 334 | ff_set_common_formats(ctx, formats); |
| 335 | if (type == AVMEDIA_TYPE_AUDIO) { |
| 336 | samplerates = ff_all_samplerates(); |
| 337 | if (!samplerates) |
| 338 | return AVERROR(ENOMEM); |
| 339 | ff_set_common_samplerates(ctx, samplerates); |
| 340 | chlayouts = ff_all_channel_layouts(); |
| 341 | if (!chlayouts) |
| 342 | return AVERROR(ENOMEM); |
| 343 | ff_set_common_channel_layouts(ctx, chlayouts); |
| 344 | } |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | static int formats_declared(AVFilterContext *f) |
| 349 | { |
| 350 | int i; |
| 351 | |
| 352 | for (i = 0; i < f->nb_inputs; i++) { |
| 353 | if (!f->inputs[i]->out_formats) |
| 354 | return 0; |
| 355 | if (f->inputs[i]->type == AVMEDIA_TYPE_AUDIO && |
| 356 | !(f->inputs[i]->out_samplerates && |
| 357 | f->inputs[i]->out_channel_layouts)) |
| 358 | return 0; |
| 359 | } |
| 360 | for (i = 0; i < f->nb_outputs; i++) { |
| 361 | if (!f->outputs[i]->in_formats) |
| 362 | return 0; |
| 363 | if (f->outputs[i]->type == AVMEDIA_TYPE_AUDIO && |
| 364 | !(f->outputs[i]->in_samplerates && |
| 365 | f->outputs[i]->in_channel_layouts)) |
| 366 | return 0; |
| 367 | } |
| 368 | return 1; |
| 369 | } |
| 370 | |
| 371 | static AVFilterFormats *clone_filter_formats(AVFilterFormats *arg) |
| 372 | { |
| 373 | AVFilterFormats *a = av_memdup(arg, sizeof(*arg)); |
| 374 | if (a) { |
| 375 | a->refcount = 0; |
| 376 | a->refs = NULL; |
| 377 | a->formats = av_memdup(a->formats, sizeof(*a->formats) * a->nb_formats); |
| 378 | if (!a->formats && arg->formats) |
| 379 | av_freep(&a); |
| 380 | } |
| 381 | return a; |
| 382 | } |
| 383 | |
| 384 | static int can_merge_formats(AVFilterFormats *a_arg, |
| 385 | AVFilterFormats *b_arg, |
| 386 | enum AVMediaType type, |
| 387 | int is_sample_rate) |
| 388 | { |
| 389 | AVFilterFormats *a, *b, *ret; |
| 390 | if (a_arg == b_arg) |
| 391 | return 1; |
| 392 | a = clone_filter_formats(a_arg); |
| 393 | b = clone_filter_formats(b_arg); |
| 394 | |
| 395 | if (!a || !b) { |
| 396 | if (a) |
| 397 | av_freep(&a->formats); |
| 398 | if (b) |
| 399 | av_freep(&b->formats); |
| 400 | |
| 401 | av_freep(&a); |
| 402 | av_freep(&b); |
| 403 | |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | if (is_sample_rate) { |
| 408 | ret = ff_merge_samplerates(a, b); |
| 409 | } else { |
| 410 | ret = ff_merge_formats(a, b, type); |
| 411 | } |
| 412 | if (ret) { |
| 413 | av_freep(&ret->formats); |
| 414 | av_freep(&ret->refs); |
| 415 | av_freep(&ret); |
| 416 | return 1; |
| 417 | } else { |
| 418 | av_freep(&a->formats); |
| 419 | av_freep(&b->formats); |
| 420 | av_freep(&a); |
| 421 | av_freep(&b); |
| 422 | return 0; |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Perform one round of query_formats() and merging formats lists on the |
| 428 | * filter graph. |
| 429 | * @return >=0 if all links formats lists could be queried and merged; |
| 430 | * AVERROR(EAGAIN) some progress was made in the queries or merging |
| 431 | * and a later call may succeed; |
| 432 | * AVERROR(EIO) (may be changed) plus a log message if no progress |
| 433 | * was made and the negotiation is stuck; |
| 434 | * a negative error code if some other error happened |
| 435 | */ |
| 436 | static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) |
| 437 | { |
| 438 | int i, j, ret; |
| 439 | int scaler_count = 0, resampler_count = 0; |
| 440 | int count_queried = 0; /* successful calls to query_formats() */ |
| 441 | int count_merged = 0; /* successful merge of formats lists */ |
| 442 | int count_already_merged = 0; /* lists already merged */ |
| 443 | int count_delayed = 0; /* lists that need to be merged later */ |
| 444 | |
| 445 | for (i = 0; i < graph->nb_filters; i++) { |
| 446 | AVFilterContext *f = graph->filters[i]; |
| 447 | if (formats_declared(f)) |
| 448 | continue; |
| 449 | if (f->filter->query_formats) |
| 450 | ret = filter_query_formats(f); |
| 451 | else |
| 452 | ret = ff_default_query_formats(f); |
| 453 | if (ret < 0 && ret != AVERROR(EAGAIN)) |
| 454 | return ret; |
| 455 | /* note: EAGAIN could indicate a partial success, not counted yet */ |
| 456 | count_queried += ret >= 0; |
| 457 | } |
| 458 | |
| 459 | /* go through and merge as many format lists as possible */ |
| 460 | for (i = 0; i < graph->nb_filters; i++) { |
| 461 | AVFilterContext *filter = graph->filters[i]; |
| 462 | |
| 463 | for (j = 0; j < filter->nb_inputs; j++) { |
| 464 | AVFilterLink *link = filter->inputs[j]; |
| 465 | int convert_needed = 0; |
| 466 | |
| 467 | if (!link) |
| 468 | continue; |
| 469 | |
| 470 | if (link->in_formats != link->out_formats |
| 471 | && link->in_formats && link->out_formats) |
| 472 | if (!can_merge_formats(link->in_formats, link->out_formats, |
| 473 | link->type, 0)) |
| 474 | convert_needed = 1; |
| 475 | if (link->type == AVMEDIA_TYPE_AUDIO) { |
| 476 | if (link->in_samplerates != link->out_samplerates |
| 477 | && link->in_samplerates && link->out_samplerates) |
| 478 | if (!can_merge_formats(link->in_samplerates, |
| 479 | link->out_samplerates, |
| 480 | 0, 1)) |
| 481 | convert_needed = 1; |
| 482 | } |
| 483 | |
| 484 | #define MERGE_DISPATCH(field, statement) \ |
| 485 | if (!(link->in_ ## field && link->out_ ## field)) { \ |
| 486 | count_delayed++; \ |
| 487 | } else if (link->in_ ## field == link->out_ ## field) { \ |
| 488 | count_already_merged++; \ |
| 489 | } else if (!convert_needed) { \ |
| 490 | count_merged++; \ |
| 491 | statement \ |
| 492 | } |
| 493 | |
| 494 | if (link->type == AVMEDIA_TYPE_AUDIO) { |
| 495 | MERGE_DISPATCH(channel_layouts, |
| 496 | if (!ff_merge_channel_layouts(link->in_channel_layouts, |
| 497 | link->out_channel_layouts)) |
| 498 | convert_needed = 1; |
| 499 | ) |
| 500 | MERGE_DISPATCH(samplerates, |
| 501 | if (!ff_merge_samplerates(link->in_samplerates, |
| 502 | link->out_samplerates)) |
| 503 | convert_needed = 1; |
| 504 | ) |
| 505 | } |
| 506 | MERGE_DISPATCH(formats, |
| 507 | if (!ff_merge_formats(link->in_formats, link->out_formats, |
| 508 | link->type)) |
| 509 | convert_needed = 1; |
| 510 | ) |
| 511 | #undef MERGE_DISPATCH |
| 512 | |
| 513 | if (convert_needed) { |
| 514 | AVFilterContext *convert; |
| 515 | AVFilter *filter; |
| 516 | AVFilterLink *inlink, *outlink; |
| 517 | char scale_args[256]; |
| 518 | char inst_name[30]; |
| 519 | |
| 520 | /* couldn't merge format lists. auto-insert conversion filter */ |
| 521 | switch (link->type) { |
| 522 | case AVMEDIA_TYPE_VIDEO: |
| 523 | if (!(filter = avfilter_get_by_name("scale"))) { |
| 524 | av_log(log_ctx, AV_LOG_ERROR, "'scale' filter " |
| 525 | "not present, cannot convert pixel formats.\n"); |
| 526 | return AVERROR(EINVAL); |
| 527 | } |
| 528 | |
| 529 | snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d", |
| 530 | scaler_count++); |
| 531 | |
| 532 | if ((ret = avfilter_graph_create_filter(&convert, filter, |
| 533 | inst_name, graph->scale_sws_opts, NULL, |
| 534 | graph)) < 0) |
| 535 | return ret; |
| 536 | break; |
| 537 | case AVMEDIA_TYPE_AUDIO: |
| 538 | if (!(filter = avfilter_get_by_name("aresample"))) { |
| 539 | av_log(log_ctx, AV_LOG_ERROR, "'aresample' filter " |
| 540 | "not present, cannot convert audio formats.\n"); |
| 541 | return AVERROR(EINVAL); |
| 542 | } |
| 543 | |
| 544 | snprintf(inst_name, sizeof(inst_name), "auto-inserted resampler %d", |
| 545 | resampler_count++); |
| 546 | scale_args[0] = '\0'; |
| 547 | if (graph->aresample_swr_opts) |
| 548 | snprintf(scale_args, sizeof(scale_args), "%s", |
| 549 | graph->aresample_swr_opts); |
| 550 | if ((ret = avfilter_graph_create_filter(&convert, filter, |
| 551 | inst_name, graph->aresample_swr_opts, |
| 552 | NULL, graph)) < 0) |
| 553 | return ret; |
| 554 | break; |
| 555 | default: |
| 556 | return AVERROR(EINVAL); |
| 557 | } |
| 558 | |
| 559 | if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0) |
| 560 | return ret; |
| 561 | |
| 562 | if ((ret = filter_query_formats(convert)) < 0) |
| 563 | return ret; |
| 564 | |
| 565 | inlink = convert->inputs[0]; |
| 566 | outlink = convert->outputs[0]; |
| 567 | av_assert0( inlink-> in_formats->refcount > 0); |
| 568 | av_assert0( inlink->out_formats->refcount > 0); |
| 569 | av_assert0(outlink-> in_formats->refcount > 0); |
| 570 | av_assert0(outlink->out_formats->refcount > 0); |
| 571 | if (outlink->type == AVMEDIA_TYPE_AUDIO) { |
| 572 | av_assert0( inlink-> in_samplerates->refcount > 0); |
| 573 | av_assert0( inlink->out_samplerates->refcount > 0); |
| 574 | av_assert0(outlink-> in_samplerates->refcount > 0); |
| 575 | av_assert0(outlink->out_samplerates->refcount > 0); |
| 576 | av_assert0( inlink-> in_channel_layouts->refcount > 0); |
| 577 | av_assert0( inlink->out_channel_layouts->refcount > 0); |
| 578 | av_assert0(outlink-> in_channel_layouts->refcount > 0); |
| 579 | av_assert0(outlink->out_channel_layouts->refcount > 0); |
| 580 | } |
| 581 | if (!ff_merge_formats( inlink->in_formats, inlink->out_formats, inlink->type) || |
| 582 | !ff_merge_formats(outlink->in_formats, outlink->out_formats, outlink->type)) |
| 583 | ret = AVERROR(ENOSYS); |
| 584 | if (inlink->type == AVMEDIA_TYPE_AUDIO && |
| 585 | (!ff_merge_samplerates(inlink->in_samplerates, |
| 586 | inlink->out_samplerates) || |
| 587 | !ff_merge_channel_layouts(inlink->in_channel_layouts, |
| 588 | inlink->out_channel_layouts))) |
| 589 | ret = AVERROR(ENOSYS); |
| 590 | if (outlink->type == AVMEDIA_TYPE_AUDIO && |
| 591 | (!ff_merge_samplerates(outlink->in_samplerates, |
| 592 | outlink->out_samplerates) || |
| 593 | !ff_merge_channel_layouts(outlink->in_channel_layouts, |
| 594 | outlink->out_channel_layouts))) |
| 595 | ret = AVERROR(ENOSYS); |
| 596 | |
| 597 | if (ret < 0) { |
| 598 | av_log(log_ctx, AV_LOG_ERROR, |
| 599 | "Impossible to convert between the formats supported by the filter " |
| 600 | "'%s' and the filter '%s'\n", link->src->name, link->dst->name); |
| 601 | return ret; |
| 602 | } |
| 603 | } |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | av_log(graph, AV_LOG_DEBUG, "query_formats: " |
| 608 | "%d queried, %d merged, %d already done, %d delayed\n", |
| 609 | count_queried, count_merged, count_already_merged, count_delayed); |
| 610 | if (count_delayed) { |
| 611 | AVBPrint bp; |
| 612 | |
| 613 | /* if count_queried > 0, one filter at least did set its formats, |
| 614 | that will give additional information to its neighbour; |
| 615 | if count_merged > 0, one pair of formats lists at least was merged, |
| 616 | that will give additional information to all connected filters; |
| 617 | in both cases, progress was made and a new round must be done */ |
| 618 | if (count_queried || count_merged) |
| 619 | return AVERROR(EAGAIN); |
| 620 | av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC); |
| 621 | for (i = 0; i < graph->nb_filters; i++) |
| 622 | if (!formats_declared(graph->filters[i])) |
| 623 | av_bprintf(&bp, "%s%s", bp.len ? ", " : "", |
| 624 | graph->filters[i]->name); |
| 625 | av_log(graph, AV_LOG_ERROR, |
| 626 | "The following filters could not choose their formats: %s\n" |
| 627 | "Consider inserting the (a)format filter near their input or " |
| 628 | "output.\n", bp.str); |
| 629 | return AVERROR(EIO); |
| 630 | } |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | static int pick_format(AVFilterLink *link, AVFilterLink *ref) |
| 635 | { |
| 636 | if (!link || !link->in_formats) |
| 637 | return 0; |
| 638 | |
| 639 | if (link->type == AVMEDIA_TYPE_VIDEO) { |
| 640 | if(ref && ref->type == AVMEDIA_TYPE_VIDEO){ |
| 641 | int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2 == 0; |
| 642 | enum AVPixelFormat best= AV_PIX_FMT_NONE; |
| 643 | int i; |
| 644 | for (i=0; i<link->in_formats->nb_formats; i++) { |
| 645 | enum AVPixelFormat p = link->in_formats->formats[i]; |
| 646 | best= av_find_best_pix_fmt_of_2(best, p, ref->format, has_alpha, NULL); |
| 647 | } |
| 648 | av_log(link->src,AV_LOG_DEBUG, "picking %s out of %d ref:%s alpha:%d\n", |
| 649 | av_get_pix_fmt_name(best), link->in_formats->nb_formats, |
| 650 | av_get_pix_fmt_name(ref->format), has_alpha); |
| 651 | link->in_formats->formats[0] = best; |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | link->in_formats->nb_formats = 1; |
| 656 | link->format = link->in_formats->formats[0]; |
| 657 | |
| 658 | if (link->type == AVMEDIA_TYPE_AUDIO) { |
| 659 | if (!link->in_samplerates->nb_formats) { |
| 660 | av_log(link->src, AV_LOG_ERROR, "Cannot select sample rate for" |
| 661 | " the link between filters %s and %s.\n", link->src->name, |
| 662 | link->dst->name); |
| 663 | return AVERROR(EINVAL); |
| 664 | } |
| 665 | link->in_samplerates->nb_formats = 1; |
| 666 | link->sample_rate = link->in_samplerates->formats[0]; |
| 667 | |
| 668 | if (link->in_channel_layouts->all_layouts) { |
| 669 | av_log(link->src, AV_LOG_ERROR, "Cannot select channel layout for" |
| 670 | " the link between filters %s and %s.\n", link->src->name, |
| 671 | link->dst->name); |
| 672 | if (!link->in_channel_layouts->all_counts) |
| 673 | av_log(link->src, AV_LOG_ERROR, "Unknown channel layouts not " |
| 674 | "supported, try specifying a channel layout using " |
| 675 | "'aformat=channel_layouts=something'.\n"); |
| 676 | return AVERROR(EINVAL); |
| 677 | } |
| 678 | link->in_channel_layouts->nb_channel_layouts = 1; |
| 679 | link->channel_layout = link->in_channel_layouts->channel_layouts[0]; |
| 680 | if ((link->channels = FF_LAYOUT2COUNT(link->channel_layout))) |
| 681 | link->channel_layout = 0; |
| 682 | else |
| 683 | link->channels = av_get_channel_layout_nb_channels(link->channel_layout); |
| 684 | } |
| 685 | |
| 686 | ff_formats_unref(&link->in_formats); |
| 687 | ff_formats_unref(&link->out_formats); |
| 688 | ff_formats_unref(&link->in_samplerates); |
| 689 | ff_formats_unref(&link->out_samplerates); |
| 690 | ff_channel_layouts_unref(&link->in_channel_layouts); |
| 691 | ff_channel_layouts_unref(&link->out_channel_layouts); |
| 692 | |
| 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | #define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) \ |
| 697 | do { \ |
| 698 | for (i = 0; i < filter->nb_inputs; i++) { \ |
| 699 | AVFilterLink *link = filter->inputs[i]; \ |
| 700 | fmt_type fmt; \ |
| 701 | \ |
| 702 | if (!link->out_ ## list || link->out_ ## list->nb != 1) \ |
| 703 | continue; \ |
| 704 | fmt = link->out_ ## list->var[0]; \ |
| 705 | \ |
| 706 | for (j = 0; j < filter->nb_outputs; j++) { \ |
| 707 | AVFilterLink *out_link = filter->outputs[j]; \ |
| 708 | list_type *fmts; \ |
| 709 | \ |
| 710 | if (link->type != out_link->type || \ |
| 711 | out_link->in_ ## list->nb == 1) \ |
| 712 | continue; \ |
| 713 | fmts = out_link->in_ ## list; \ |
| 714 | \ |
| 715 | if (!out_link->in_ ## list->nb) { \ |
| 716 | add_format(&out_link->in_ ##list, fmt); \ |
| 717 | ret = 1; \ |
| 718 | break; \ |
| 719 | } \ |
| 720 | \ |
| 721 | for (k = 0; k < out_link->in_ ## list->nb; k++) \ |
| 722 | if (fmts->var[k] == fmt) { \ |
| 723 | fmts->var[0] = fmt; \ |
| 724 | fmts->nb = 1; \ |
| 725 | ret = 1; \ |
| 726 | break; \ |
| 727 | } \ |
| 728 | } \ |
| 729 | } \ |
| 730 | } while (0) |
| 731 | |
| 732 | static int reduce_formats_on_filter(AVFilterContext *filter) |
| 733 | { |
| 734 | int i, j, k, ret = 0; |
| 735 | |
| 736 | REDUCE_FORMATS(int, AVFilterFormats, formats, formats, |
| 737 | nb_formats, ff_add_format); |
| 738 | REDUCE_FORMATS(int, AVFilterFormats, samplerates, formats, |
| 739 | nb_formats, ff_add_format); |
| 740 | |
| 741 | /* reduce channel layouts */ |
| 742 | for (i = 0; i < filter->nb_inputs; i++) { |
| 743 | AVFilterLink *inlink = filter->inputs[i]; |
| 744 | uint64_t fmt; |
| 745 | |
| 746 | if (!inlink->out_channel_layouts || |
| 747 | inlink->out_channel_layouts->nb_channel_layouts != 1) |
| 748 | continue; |
| 749 | fmt = inlink->out_channel_layouts->channel_layouts[0]; |
| 750 | |
| 751 | for (j = 0; j < filter->nb_outputs; j++) { |
| 752 | AVFilterLink *outlink = filter->outputs[j]; |
| 753 | AVFilterChannelLayouts *fmts; |
| 754 | |
| 755 | fmts = outlink->in_channel_layouts; |
| 756 | if (inlink->type != outlink->type || fmts->nb_channel_layouts == 1) |
| 757 | continue; |
| 758 | |
| 759 | if (fmts->all_layouts && |
| 760 | (!FF_LAYOUT2COUNT(fmt) || fmts->all_counts)) { |
| 761 | /* Turn the infinite list into a singleton */ |
| 762 | fmts->all_layouts = fmts->all_counts = 0; |
| 763 | ff_add_channel_layout(&outlink->in_channel_layouts, fmt); |
| 764 | break; |
| 765 | } |
| 766 | |
| 767 | for (k = 0; k < outlink->in_channel_layouts->nb_channel_layouts; k++) { |
| 768 | if (fmts->channel_layouts[k] == fmt) { |
| 769 | fmts->channel_layouts[0] = fmt; |
| 770 | fmts->nb_channel_layouts = 1; |
| 771 | ret = 1; |
| 772 | break; |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | return ret; |
| 779 | } |
| 780 | |
| 781 | static void reduce_formats(AVFilterGraph *graph) |
| 782 | { |
| 783 | int i, reduced; |
| 784 | |
| 785 | do { |
| 786 | reduced = 0; |
| 787 | |
| 788 | for (i = 0; i < graph->nb_filters; i++) |
| 789 | reduced |= reduce_formats_on_filter(graph->filters[i]); |
| 790 | } while (reduced); |
| 791 | } |
| 792 | |
| 793 | static void swap_samplerates_on_filter(AVFilterContext *filter) |
| 794 | { |
| 795 | AVFilterLink *link = NULL; |
| 796 | int sample_rate; |
| 797 | int i, j; |
| 798 | |
| 799 | for (i = 0; i < filter->nb_inputs; i++) { |
| 800 | link = filter->inputs[i]; |
| 801 | |
| 802 | if (link->type == AVMEDIA_TYPE_AUDIO && |
| 803 | link->out_samplerates->nb_formats== 1) |
| 804 | break; |
| 805 | } |
| 806 | if (i == filter->nb_inputs) |
| 807 | return; |
| 808 | |
| 809 | sample_rate = link->out_samplerates->formats[0]; |
| 810 | |
| 811 | for (i = 0; i < filter->nb_outputs; i++) { |
| 812 | AVFilterLink *outlink = filter->outputs[i]; |
| 813 | int best_idx, best_diff = INT_MAX; |
| 814 | |
| 815 | if (outlink->type != AVMEDIA_TYPE_AUDIO || |
| 816 | outlink->in_samplerates->nb_formats < 2) |
| 817 | continue; |
| 818 | |
| 819 | for (j = 0; j < outlink->in_samplerates->nb_formats; j++) { |
| 820 | int diff = abs(sample_rate - outlink->in_samplerates->formats[j]); |
| 821 | |
| 822 | if (diff < best_diff) { |
| 823 | best_diff = diff; |
| 824 | best_idx = j; |
| 825 | } |
| 826 | } |
| 827 | FFSWAP(int, outlink->in_samplerates->formats[0], |
| 828 | outlink->in_samplerates->formats[best_idx]); |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | static void swap_samplerates(AVFilterGraph *graph) |
| 833 | { |
| 834 | int i; |
| 835 | |
| 836 | for (i = 0; i < graph->nb_filters; i++) |
| 837 | swap_samplerates_on_filter(graph->filters[i]); |
| 838 | } |
| 839 | |
| 840 | #define CH_CENTER_PAIR (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER) |
| 841 | #define CH_FRONT_PAIR (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT) |
| 842 | #define CH_STEREO_PAIR (AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT) |
| 843 | #define CH_WIDE_PAIR (AV_CH_WIDE_LEFT | AV_CH_WIDE_RIGHT) |
| 844 | #define CH_SIDE_PAIR (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT) |
| 845 | #define CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT) |
| 846 | #define CH_BACK_PAIR (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT) |
| 847 | |
| 848 | /* allowable substitutions for channel pairs when comparing layouts, |
| 849 | * ordered by priority for both values */ |
| 850 | static const uint64_t ch_subst[][2] = { |
| 851 | { CH_FRONT_PAIR, CH_CENTER_PAIR }, |
| 852 | { CH_FRONT_PAIR, CH_WIDE_PAIR }, |
| 853 | { CH_FRONT_PAIR, AV_CH_FRONT_CENTER }, |
| 854 | { CH_CENTER_PAIR, CH_FRONT_PAIR }, |
| 855 | { CH_CENTER_PAIR, CH_WIDE_PAIR }, |
| 856 | { CH_CENTER_PAIR, AV_CH_FRONT_CENTER }, |
| 857 | { CH_WIDE_PAIR, CH_FRONT_PAIR }, |
| 858 | { CH_WIDE_PAIR, CH_CENTER_PAIR }, |
| 859 | { CH_WIDE_PAIR, AV_CH_FRONT_CENTER }, |
| 860 | { AV_CH_FRONT_CENTER, CH_FRONT_PAIR }, |
| 861 | { AV_CH_FRONT_CENTER, CH_CENTER_PAIR }, |
| 862 | { AV_CH_FRONT_CENTER, CH_WIDE_PAIR }, |
| 863 | { CH_SIDE_PAIR, CH_DIRECT_PAIR }, |
| 864 | { CH_SIDE_PAIR, CH_BACK_PAIR }, |
| 865 | { CH_SIDE_PAIR, AV_CH_BACK_CENTER }, |
| 866 | { CH_BACK_PAIR, CH_DIRECT_PAIR }, |
| 867 | { CH_BACK_PAIR, CH_SIDE_PAIR }, |
| 868 | { CH_BACK_PAIR, AV_CH_BACK_CENTER }, |
| 869 | { AV_CH_BACK_CENTER, CH_BACK_PAIR }, |
| 870 | { AV_CH_BACK_CENTER, CH_DIRECT_PAIR }, |
| 871 | { AV_CH_BACK_CENTER, CH_SIDE_PAIR }, |
| 872 | }; |
| 873 | |
| 874 | static void swap_channel_layouts_on_filter(AVFilterContext *filter) |
| 875 | { |
| 876 | AVFilterLink *link = NULL; |
| 877 | int i, j, k; |
| 878 | |
| 879 | for (i = 0; i < filter->nb_inputs; i++) { |
| 880 | link = filter->inputs[i]; |
| 881 | |
| 882 | if (link->type == AVMEDIA_TYPE_AUDIO && |
| 883 | link->out_channel_layouts->nb_channel_layouts == 1) |
| 884 | break; |
| 885 | } |
| 886 | if (i == filter->nb_inputs) |
| 887 | return; |
| 888 | |
| 889 | for (i = 0; i < filter->nb_outputs; i++) { |
| 890 | AVFilterLink *outlink = filter->outputs[i]; |
| 891 | int best_idx = -1, best_score = INT_MIN, best_count_diff = INT_MAX; |
| 892 | |
| 893 | if (outlink->type != AVMEDIA_TYPE_AUDIO || |
| 894 | outlink->in_channel_layouts->nb_channel_layouts < 2) |
| 895 | continue; |
| 896 | |
| 897 | for (j = 0; j < outlink->in_channel_layouts->nb_channel_layouts; j++) { |
| 898 | uint64_t in_chlayout = link->out_channel_layouts->channel_layouts[0]; |
| 899 | uint64_t out_chlayout = outlink->in_channel_layouts->channel_layouts[j]; |
| 900 | int in_channels = av_get_channel_layout_nb_channels(in_chlayout); |
| 901 | int out_channels = av_get_channel_layout_nb_channels(out_chlayout); |
| 902 | int count_diff = out_channels - in_channels; |
| 903 | int matched_channels, extra_channels; |
| 904 | int score = 100000; |
| 905 | |
| 906 | if (FF_LAYOUT2COUNT(in_chlayout) || FF_LAYOUT2COUNT(out_chlayout)) { |
| 907 | /* Compute score in case the input or output layout encodes |
| 908 | a channel count; in this case the score is not altered by |
| 909 | the computation afterwards, as in_chlayout and |
| 910 | out_chlayout have both been set to 0 */ |
| 911 | if (FF_LAYOUT2COUNT(in_chlayout)) |
| 912 | in_channels = FF_LAYOUT2COUNT(in_chlayout); |
| 913 | if (FF_LAYOUT2COUNT(out_chlayout)) |
| 914 | out_channels = FF_LAYOUT2COUNT(out_chlayout); |
| 915 | score -= 10000 + FFABS(out_channels - in_channels) + |
| 916 | (in_channels > out_channels ? 10000 : 0); |
| 917 | in_chlayout = out_chlayout = 0; |
| 918 | /* Let the remaining computation run, even if the score |
| 919 | value is not altered */ |
| 920 | } |
| 921 | |
| 922 | /* channel substitution */ |
| 923 | for (k = 0; k < FF_ARRAY_ELEMS(ch_subst); k++) { |
| 924 | uint64_t cmp0 = ch_subst[k][0]; |
| 925 | uint64_t cmp1 = ch_subst[k][1]; |
| 926 | if (( in_chlayout & cmp0) && (!(out_chlayout & cmp0)) && |
| 927 | (out_chlayout & cmp1) && (!( in_chlayout & cmp1))) { |
| 928 | in_chlayout &= ~cmp0; |
| 929 | out_chlayout &= ~cmp1; |
| 930 | /* add score for channel match, minus a deduction for |
| 931 | having to do the substitution */ |
| 932 | score += 10 * av_get_channel_layout_nb_channels(cmp1) - 2; |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | /* no penalty for LFE channel mismatch */ |
| 937 | if ( (in_chlayout & AV_CH_LOW_FREQUENCY) && |
| 938 | (out_chlayout & AV_CH_LOW_FREQUENCY)) |
| 939 | score += 10; |
| 940 | in_chlayout &= ~AV_CH_LOW_FREQUENCY; |
| 941 | out_chlayout &= ~AV_CH_LOW_FREQUENCY; |
| 942 | |
| 943 | matched_channels = av_get_channel_layout_nb_channels(in_chlayout & |
| 944 | out_chlayout); |
| 945 | extra_channels = av_get_channel_layout_nb_channels(out_chlayout & |
| 946 | (~in_chlayout)); |
| 947 | score += 10 * matched_channels - 5 * extra_channels; |
| 948 | |
| 949 | if (score > best_score || |
| 950 | (count_diff < best_count_diff && score == best_score)) { |
| 951 | best_score = score; |
| 952 | best_idx = j; |
| 953 | best_count_diff = count_diff; |
| 954 | } |
| 955 | } |
| 956 | av_assert0(best_idx >= 0); |
| 957 | FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0], |
| 958 | outlink->in_channel_layouts->channel_layouts[best_idx]); |
| 959 | } |
| 960 | |
| 961 | } |
| 962 | |
| 963 | static void swap_channel_layouts(AVFilterGraph *graph) |
| 964 | { |
| 965 | int i; |
| 966 | |
| 967 | for (i = 0; i < graph->nb_filters; i++) |
| 968 | swap_channel_layouts_on_filter(graph->filters[i]); |
| 969 | } |
| 970 | |
| 971 | static void swap_sample_fmts_on_filter(AVFilterContext *filter) |
| 972 | { |
| 973 | AVFilterLink *link = NULL; |
| 974 | int format, bps; |
| 975 | int i, j; |
| 976 | |
| 977 | for (i = 0; i < filter->nb_inputs; i++) { |
| 978 | link = filter->inputs[i]; |
| 979 | |
| 980 | if (link->type == AVMEDIA_TYPE_AUDIO && |
| 981 | link->out_formats->nb_formats == 1) |
| 982 | break; |
| 983 | } |
| 984 | if (i == filter->nb_inputs) |
| 985 | return; |
| 986 | |
| 987 | format = link->out_formats->formats[0]; |
| 988 | bps = av_get_bytes_per_sample(format); |
| 989 | |
| 990 | for (i = 0; i < filter->nb_outputs; i++) { |
| 991 | AVFilterLink *outlink = filter->outputs[i]; |
| 992 | int best_idx = -1, best_score = INT_MIN; |
| 993 | |
| 994 | if (outlink->type != AVMEDIA_TYPE_AUDIO || |
| 995 | outlink->in_formats->nb_formats < 2) |
| 996 | continue; |
| 997 | |
| 998 | for (j = 0; j < outlink->in_formats->nb_formats; j++) { |
| 999 | int out_format = outlink->in_formats->formats[j]; |
| 1000 | int out_bps = av_get_bytes_per_sample(out_format); |
| 1001 | int score; |
| 1002 | |
| 1003 | if (av_get_packed_sample_fmt(out_format) == format || |
| 1004 | av_get_planar_sample_fmt(out_format) == format) { |
| 1005 | best_idx = j; |
| 1006 | break; |
| 1007 | } |
| 1008 | |
| 1009 | /* for s32 and float prefer double to prevent loss of information */ |
| 1010 | if (bps == 4 && out_bps == 8) { |
| 1011 | best_idx = j; |
| 1012 | break; |
| 1013 | } |
| 1014 | |
| 1015 | /* prefer closest higher or equal bps */ |
| 1016 | score = -abs(out_bps - bps); |
| 1017 | if (out_bps >= bps) |
| 1018 | score += INT_MAX/2; |
| 1019 | |
| 1020 | if (score > best_score) { |
| 1021 | best_score = score; |
| 1022 | best_idx = j; |
| 1023 | } |
| 1024 | } |
| 1025 | av_assert0(best_idx >= 0); |
| 1026 | FFSWAP(int, outlink->in_formats->formats[0], |
| 1027 | outlink->in_formats->formats[best_idx]); |
| 1028 | } |
| 1029 | } |
| 1030 | |
| 1031 | static void swap_sample_fmts(AVFilterGraph *graph) |
| 1032 | { |
| 1033 | int i; |
| 1034 | |
| 1035 | for (i = 0; i < graph->nb_filters; i++) |
| 1036 | swap_sample_fmts_on_filter(graph->filters[i]); |
| 1037 | |
| 1038 | } |
| 1039 | |
| 1040 | static int pick_formats(AVFilterGraph *graph) |
| 1041 | { |
| 1042 | int i, j, ret; |
| 1043 | int change; |
| 1044 | |
| 1045 | do{ |
| 1046 | change = 0; |
| 1047 | for (i = 0; i < graph->nb_filters; i++) { |
| 1048 | AVFilterContext *filter = graph->filters[i]; |
| 1049 | if (filter->nb_inputs){ |
| 1050 | for (j = 0; j < filter->nb_inputs; j++){ |
| 1051 | if(filter->inputs[j]->in_formats && filter->inputs[j]->in_formats->nb_formats == 1) { |
| 1052 | if ((ret = pick_format(filter->inputs[j], NULL)) < 0) |
| 1053 | return ret; |
| 1054 | change = 1; |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | if (filter->nb_outputs){ |
| 1059 | for (j = 0; j < filter->nb_outputs; j++){ |
| 1060 | if(filter->outputs[j]->in_formats && filter->outputs[j]->in_formats->nb_formats == 1) { |
| 1061 | if ((ret = pick_format(filter->outputs[j], NULL)) < 0) |
| 1062 | return ret; |
| 1063 | change = 1; |
| 1064 | } |
| 1065 | } |
| 1066 | } |
| 1067 | if (filter->nb_inputs && filter->nb_outputs && filter->inputs[0]->format>=0) { |
| 1068 | for (j = 0; j < filter->nb_outputs; j++) { |
| 1069 | if(filter->outputs[j]->format<0) { |
| 1070 | if ((ret = pick_format(filter->outputs[j], filter->inputs[0])) < 0) |
| 1071 | return ret; |
| 1072 | change = 1; |
| 1073 | } |
| 1074 | } |
| 1075 | } |
| 1076 | } |
| 1077 | }while(change); |
| 1078 | |
| 1079 | for (i = 0; i < graph->nb_filters; i++) { |
| 1080 | AVFilterContext *filter = graph->filters[i]; |
| 1081 | |
| 1082 | for (j = 0; j < filter->nb_inputs; j++) |
| 1083 | if ((ret = pick_format(filter->inputs[j], NULL)) < 0) |
| 1084 | return ret; |
| 1085 | for (j = 0; j < filter->nb_outputs; j++) |
| 1086 | if ((ret = pick_format(filter->outputs[j], NULL)) < 0) |
| 1087 | return ret; |
| 1088 | } |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | /** |
| 1093 | * Configure the formats of all the links in the graph. |
| 1094 | */ |
| 1095 | static int graph_config_formats(AVFilterGraph *graph, AVClass *log_ctx) |
| 1096 | { |
| 1097 | int ret; |
| 1098 | |
| 1099 | /* find supported formats from sub-filters, and merge along links */ |
| 1100 | while ((ret = query_formats(graph, log_ctx)) == AVERROR(EAGAIN)) |
| 1101 | av_log(graph, AV_LOG_DEBUG, "query_formats not finished\n"); |
| 1102 | if (ret < 0) |
| 1103 | return ret; |
| 1104 | |
| 1105 | /* Once everything is merged, it's possible that we'll still have |
| 1106 | * multiple valid media format choices. We try to minimize the amount |
| 1107 | * of format conversion inside filters */ |
| 1108 | reduce_formats(graph); |
| 1109 | |
| 1110 | /* for audio filters, ensure the best format, sample rate and channel layout |
| 1111 | * is selected */ |
| 1112 | swap_sample_fmts(graph); |
| 1113 | swap_samplerates(graph); |
| 1114 | swap_channel_layouts(graph); |
| 1115 | |
| 1116 | if ((ret = pick_formats(graph)) < 0) |
| 1117 | return ret; |
| 1118 | |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
| 1122 | static int ff_avfilter_graph_config_pointers(AVFilterGraph *graph, |
| 1123 | AVClass *log_ctx) |
| 1124 | { |
| 1125 | unsigned i, j; |
| 1126 | int sink_links_count = 0, n = 0; |
| 1127 | AVFilterContext *f; |
| 1128 | AVFilterLink **sinks; |
| 1129 | |
| 1130 | for (i = 0; i < graph->nb_filters; i++) { |
| 1131 | f = graph->filters[i]; |
| 1132 | for (j = 0; j < f->nb_inputs; j++) { |
| 1133 | f->inputs[j]->graph = graph; |
| 1134 | f->inputs[j]->age_index = -1; |
| 1135 | } |
| 1136 | for (j = 0; j < f->nb_outputs; j++) { |
| 1137 | f->outputs[j]->graph = graph; |
| 1138 | f->outputs[j]->age_index= -1; |
| 1139 | } |
| 1140 | if (!f->nb_outputs) { |
| 1141 | if (f->nb_inputs > INT_MAX - sink_links_count) |
| 1142 | return AVERROR(EINVAL); |
| 1143 | sink_links_count += f->nb_inputs; |
| 1144 | } |
| 1145 | } |
| 1146 | sinks = av_calloc(sink_links_count, sizeof(*sinks)); |
| 1147 | if (!sinks) |
| 1148 | return AVERROR(ENOMEM); |
| 1149 | for (i = 0; i < graph->nb_filters; i++) { |
| 1150 | f = graph->filters[i]; |
| 1151 | if (!f->nb_outputs) { |
| 1152 | for (j = 0; j < f->nb_inputs; j++) { |
| 1153 | sinks[n] = f->inputs[j]; |
| 1154 | f->inputs[j]->age_index = n++; |
| 1155 | } |
| 1156 | } |
| 1157 | } |
| 1158 | av_assert0(n == sink_links_count); |
| 1159 | graph->sink_links = sinks; |
| 1160 | graph->sink_links_count = sink_links_count; |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
| 1164 | static int graph_insert_fifos(AVFilterGraph *graph, AVClass *log_ctx) |
| 1165 | { |
| 1166 | AVFilterContext *f; |
| 1167 | int i, j, ret; |
| 1168 | int fifo_count = 0; |
| 1169 | |
| 1170 | for (i = 0; i < graph->nb_filters; i++) { |
| 1171 | f = graph->filters[i]; |
| 1172 | |
| 1173 | for (j = 0; j < f->nb_inputs; j++) { |
| 1174 | AVFilterLink *link = f->inputs[j]; |
| 1175 | AVFilterContext *fifo_ctx; |
| 1176 | AVFilter *fifo; |
| 1177 | char name[32]; |
| 1178 | |
| 1179 | if (!link->dstpad->needs_fifo) |
| 1180 | continue; |
| 1181 | |
| 1182 | fifo = f->inputs[j]->type == AVMEDIA_TYPE_VIDEO ? |
| 1183 | avfilter_get_by_name("fifo") : |
| 1184 | avfilter_get_by_name("afifo"); |
| 1185 | |
| 1186 | snprintf(name, sizeof(name), "auto-inserted fifo %d", fifo_count++); |
| 1187 | |
| 1188 | ret = avfilter_graph_create_filter(&fifo_ctx, fifo, name, NULL, |
| 1189 | NULL, graph); |
| 1190 | if (ret < 0) |
| 1191 | return ret; |
| 1192 | |
| 1193 | ret = avfilter_insert_filter(link, fifo_ctx, 0, 0); |
| 1194 | if (ret < 0) |
| 1195 | return ret; |
| 1196 | } |
| 1197 | } |
| 1198 | |
| 1199 | return 0; |
| 1200 | } |
| 1201 | |
| 1202 | int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx) |
| 1203 | { |
| 1204 | int ret; |
| 1205 | |
| 1206 | if ((ret = graph_check_validity(graphctx, log_ctx))) |
| 1207 | return ret; |
| 1208 | if ((ret = graph_insert_fifos(graphctx, log_ctx)) < 0) |
| 1209 | return ret; |
| 1210 | if ((ret = graph_config_formats(graphctx, log_ctx))) |
| 1211 | return ret; |
| 1212 | if ((ret = graph_config_links(graphctx, log_ctx))) |
| 1213 | return ret; |
| 1214 | if ((ret = ff_avfilter_graph_config_pointers(graphctx, log_ctx))) |
| 1215 | return ret; |
| 1216 | |
| 1217 | return 0; |
| 1218 | } |
| 1219 | |
| 1220 | int avfilter_graph_send_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags) |
| 1221 | { |
| 1222 | int i, r = AVERROR(ENOSYS); |
| 1223 | |
| 1224 | if (!graph) |
| 1225 | return r; |
| 1226 | |
| 1227 | if ((flags & AVFILTER_CMD_FLAG_ONE) && !(flags & AVFILTER_CMD_FLAG_FAST)) { |
| 1228 | r = avfilter_graph_send_command(graph, target, cmd, arg, res, res_len, flags | AVFILTER_CMD_FLAG_FAST); |
| 1229 | if (r != AVERROR(ENOSYS)) |
| 1230 | return r; |
| 1231 | } |
| 1232 | |
| 1233 | if (res_len && res) |
| 1234 | res[0] = 0; |
| 1235 | |
| 1236 | for (i = 0; i < graph->nb_filters; i++) { |
| 1237 | AVFilterContext *filter = graph->filters[i]; |
| 1238 | if (!strcmp(target, "all") || (filter->name && !strcmp(target, filter->name)) || !strcmp(target, filter->filter->name)) { |
| 1239 | r = avfilter_process_command(filter, cmd, arg, res, res_len, flags); |
| 1240 | if (r != AVERROR(ENOSYS)) { |
| 1241 | if ((flags & AVFILTER_CMD_FLAG_ONE) || r < 0) |
| 1242 | return r; |
| 1243 | } |
| 1244 | } |
| 1245 | } |
| 1246 | |
| 1247 | return r; |
| 1248 | } |
| 1249 | |
| 1250 | int avfilter_graph_queue_command(AVFilterGraph *graph, const char *target, const char *command, const char *arg, int flags, double ts) |
| 1251 | { |
| 1252 | int i; |
| 1253 | |
| 1254 | if(!graph) |
| 1255 | return 0; |
| 1256 | |
| 1257 | for (i = 0; i < graph->nb_filters; i++) { |
| 1258 | AVFilterContext *filter = graph->filters[i]; |
| 1259 | if(filter && (!strcmp(target, "all") || !strcmp(target, filter->name) || !strcmp(target, filter->filter->name))){ |
| 1260 | AVFilterCommand **queue = &filter->command_queue, *next; |
| 1261 | while (*queue && (*queue)->time <= ts) |
| 1262 | queue = &(*queue)->next; |
| 1263 | next = *queue; |
| 1264 | *queue = av_mallocz(sizeof(AVFilterCommand)); |
| 1265 | (*queue)->command = av_strdup(command); |
| 1266 | (*queue)->arg = av_strdup(arg); |
| 1267 | (*queue)->time = ts; |
| 1268 | (*queue)->flags = flags; |
| 1269 | (*queue)->next = next; |
| 1270 | if(flags & AVFILTER_CMD_FLAG_ONE) |
| 1271 | return 0; |
| 1272 | } |
| 1273 | } |
| 1274 | |
| 1275 | return 0; |
| 1276 | } |
| 1277 | |
| 1278 | static void heap_bubble_up(AVFilterGraph *graph, |
| 1279 | AVFilterLink *link, int index) |
| 1280 | { |
| 1281 | AVFilterLink **links = graph->sink_links; |
| 1282 | |
| 1283 | while (index) { |
| 1284 | int parent = (index - 1) >> 1; |
| 1285 | if (links[parent]->current_pts >= link->current_pts) |
| 1286 | break; |
| 1287 | links[index] = links[parent]; |
| 1288 | links[index]->age_index = index; |
| 1289 | index = parent; |
| 1290 | } |
| 1291 | links[index] = link; |
| 1292 | link->age_index = index; |
| 1293 | } |
| 1294 | |
| 1295 | static void heap_bubble_down(AVFilterGraph *graph, |
| 1296 | AVFilterLink *link, int index) |
| 1297 | { |
| 1298 | AVFilterLink **links = graph->sink_links; |
| 1299 | |
| 1300 | while (1) { |
| 1301 | int child = 2 * index + 1; |
| 1302 | if (child >= graph->sink_links_count) |
| 1303 | break; |
| 1304 | if (child + 1 < graph->sink_links_count && |
| 1305 | links[child + 1]->current_pts < links[child]->current_pts) |
| 1306 | child++; |
| 1307 | if (link->current_pts < links[child]->current_pts) |
| 1308 | break; |
| 1309 | links[index] = links[child]; |
| 1310 | links[index]->age_index = index; |
| 1311 | index = child; |
| 1312 | } |
| 1313 | links[index] = link; |
| 1314 | link->age_index = index; |
| 1315 | } |
| 1316 | |
| 1317 | void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link) |
| 1318 | { |
| 1319 | heap_bubble_up (graph, link, link->age_index); |
| 1320 | heap_bubble_down(graph, link, link->age_index); |
| 1321 | } |
| 1322 | |
| 1323 | |
| 1324 | int avfilter_graph_request_oldest(AVFilterGraph *graph) |
| 1325 | { |
| 1326 | while (graph->sink_links_count) { |
| 1327 | AVFilterLink *oldest = graph->sink_links[0]; |
| 1328 | int r = ff_request_frame(oldest); |
| 1329 | if (r != AVERROR_EOF) |
| 1330 | return r; |
| 1331 | av_log(oldest->dst, AV_LOG_DEBUG, "EOF on sink link %s:%s.\n", |
| 1332 | oldest->dst ? oldest->dst->name : "unknown", |
| 1333 | oldest->dstpad ? oldest->dstpad->name : "unknown"); |
| 1334 | /* EOF: remove the link from the heap */ |
| 1335 | if (oldest->age_index < --graph->sink_links_count) |
| 1336 | heap_bubble_down(graph, graph->sink_links[graph->sink_links_count], |
| 1337 | oldest->age_index); |
| 1338 | oldest->age_index = -1; |
| 1339 | } |
| 1340 | return AVERROR_EOF; |
| 1341 | } |