| 1 | /* |
| 2 | * Filter layer - format negotiation |
| 3 | * Copyright (c) 2007 Bobby Bingham |
| 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 | #include "libavutil/avassert.h" |
| 23 | #include "libavutil/channel_layout.h" |
| 24 | #include "libavutil/common.h" |
| 25 | #include "libavutil/eval.h" |
| 26 | #include "libavutil/pixdesc.h" |
| 27 | #include "libavutil/parseutils.h" |
| 28 | #include "avfilter.h" |
| 29 | #include "internal.h" |
| 30 | #include "formats.h" |
| 31 | |
| 32 | #define KNOWN(l) (!FF_LAYOUT2COUNT(l)) /* for readability */ |
| 33 | |
| 34 | /** |
| 35 | * Add all refs from a to ret and destroy a. |
| 36 | */ |
| 37 | #define MERGE_REF(ret, a, fmts, type, fail) \ |
| 38 | do { \ |
| 39 | type ***tmp; \ |
| 40 | int i; \ |
| 41 | \ |
| 42 | if (!(tmp = av_realloc_array(ret->refs, ret->refcount + a->refcount, \ |
| 43 | sizeof(*tmp)))) \ |
| 44 | goto fail; \ |
| 45 | ret->refs = tmp; \ |
| 46 | \ |
| 47 | for (i = 0; i < a->refcount; i ++) { \ |
| 48 | ret->refs[ret->refcount] = a->refs[i]; \ |
| 49 | *ret->refs[ret->refcount++] = ret; \ |
| 50 | } \ |
| 51 | \ |
| 52 | av_freep(&a->refs); \ |
| 53 | av_freep(&a->fmts); \ |
| 54 | av_freep(&a); \ |
| 55 | } while (0) |
| 56 | |
| 57 | /** |
| 58 | * Add all formats common for a and b to ret, copy the refs and destroy |
| 59 | * a and b. |
| 60 | */ |
| 61 | #define MERGE_FORMATS(ret, a, b, fmts, nb, type, fail) \ |
| 62 | do { \ |
| 63 | int i, j, k = 0, count = FFMIN(a->nb, b->nb); \ |
| 64 | \ |
| 65 | if (!(ret = av_mallocz(sizeof(*ret)))) \ |
| 66 | goto fail; \ |
| 67 | \ |
| 68 | if (count) { \ |
| 69 | if (!(ret->fmts = av_malloc_array(count, sizeof(*ret->fmts)))) \ |
| 70 | goto fail; \ |
| 71 | for (i = 0; i < a->nb; i++) \ |
| 72 | for (j = 0; j < b->nb; j++) \ |
| 73 | if (a->fmts[i] == b->fmts[j]) { \ |
| 74 | if(k >= FFMIN(a->nb, b->nb)){ \ |
| 75 | av_log(NULL, AV_LOG_ERROR, "Duplicate formats in avfilter_merge_formats() detected\n"); \ |
| 76 | av_free(ret->fmts); \ |
| 77 | av_free(ret); \ |
| 78 | return NULL; \ |
| 79 | } \ |
| 80 | ret->fmts[k++] = a->fmts[i]; \ |
| 81 | } \ |
| 82 | } \ |
| 83 | ret->nb = k; \ |
| 84 | /* check that there was at least one common format */ \ |
| 85 | if (!ret->nb) \ |
| 86 | goto fail; \ |
| 87 | \ |
| 88 | MERGE_REF(ret, a, fmts, type, fail); \ |
| 89 | MERGE_REF(ret, b, fmts, type, fail); \ |
| 90 | } while (0) |
| 91 | |
| 92 | AVFilterFormats *ff_merge_formats(AVFilterFormats *a, AVFilterFormats *b, |
| 93 | enum AVMediaType type) |
| 94 | { |
| 95 | AVFilterFormats *ret = NULL; |
| 96 | int i, j; |
| 97 | int alpha1=0, alpha2=0; |
| 98 | int chroma1=0, chroma2=0; |
| 99 | |
| 100 | if (a == b) |
| 101 | return a; |
| 102 | |
| 103 | /* Do not lose chroma or alpha in merging. |
| 104 | It happens if both lists have formats with chroma (resp. alpha), but |
| 105 | the only formats in common do not have it (e.g. YUV+gray vs. |
| 106 | RGB+gray): in that case, the merging would select the gray format, |
| 107 | possibly causing a lossy conversion elsewhere in the graph. |
| 108 | To avoid that, pretend that there are no common formats to force the |
| 109 | insertion of a conversion filter. */ |
| 110 | if (type == AVMEDIA_TYPE_VIDEO) |
| 111 | for (i = 0; i < a->nb_formats; i++) |
| 112 | for (j = 0; j < b->nb_formats; j++) { |
| 113 | const AVPixFmtDescriptor *adesc = av_pix_fmt_desc_get(a->formats[i]); |
| 114 | const AVPixFmtDescriptor *bdesc = av_pix_fmt_desc_get(b->formats[j]); |
| 115 | alpha2 |= adesc->flags & bdesc->flags & AV_PIX_FMT_FLAG_ALPHA; |
| 116 | chroma2|= adesc->nb_components > 1 && bdesc->nb_components > 1; |
| 117 | if (a->formats[i] == b->formats[j]) { |
| 118 | alpha1 |= adesc->flags & AV_PIX_FMT_FLAG_ALPHA; |
| 119 | chroma1|= adesc->nb_components > 1; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | // If chroma or alpha can be lost through merging then do not merge |
| 124 | if (alpha2 > alpha1 || chroma2 > chroma1) |
| 125 | return NULL; |
| 126 | |
| 127 | MERGE_FORMATS(ret, a, b, formats, nb_formats, AVFilterFormats, fail); |
| 128 | |
| 129 | return ret; |
| 130 | fail: |
| 131 | if (ret) { |
| 132 | av_freep(&ret->refs); |
| 133 | av_freep(&ret->formats); |
| 134 | } |
| 135 | av_freep(&ret); |
| 136 | return NULL; |
| 137 | } |
| 138 | |
| 139 | AVFilterFormats *ff_merge_samplerates(AVFilterFormats *a, |
| 140 | AVFilterFormats *b) |
| 141 | { |
| 142 | AVFilterFormats *ret = NULL; |
| 143 | |
| 144 | if (a == b) return a; |
| 145 | |
| 146 | if (a->nb_formats && b->nb_formats) { |
| 147 | MERGE_FORMATS(ret, a, b, formats, nb_formats, AVFilterFormats, fail); |
| 148 | } else if (a->nb_formats) { |
| 149 | MERGE_REF(a, b, formats, AVFilterFormats, fail); |
| 150 | ret = a; |
| 151 | } else { |
| 152 | MERGE_REF(b, a, formats, AVFilterFormats, fail); |
| 153 | ret = b; |
| 154 | } |
| 155 | |
| 156 | return ret; |
| 157 | fail: |
| 158 | if (ret) { |
| 159 | av_freep(&ret->refs); |
| 160 | av_freep(&ret->formats); |
| 161 | } |
| 162 | av_freep(&ret); |
| 163 | return NULL; |
| 164 | } |
| 165 | |
| 166 | AVFilterChannelLayouts *ff_merge_channel_layouts(AVFilterChannelLayouts *a, |
| 167 | AVFilterChannelLayouts *b) |
| 168 | { |
| 169 | AVFilterChannelLayouts *ret = NULL; |
| 170 | unsigned a_all = a->all_layouts + a->all_counts; |
| 171 | unsigned b_all = b->all_layouts + b->all_counts; |
| 172 | int ret_max, ret_nb = 0, i, j, round; |
| 173 | |
| 174 | if (a == b) return a; |
| 175 | |
| 176 | /* Put the most generic set in a, to avoid doing everything twice */ |
| 177 | if (a_all < b_all) { |
| 178 | FFSWAP(AVFilterChannelLayouts *, a, b); |
| 179 | FFSWAP(unsigned, a_all, b_all); |
| 180 | } |
| 181 | if (a_all) { |
| 182 | if (a_all == 1 && !b_all) { |
| 183 | /* keep only known layouts in b; works also for b_all = 1 */ |
| 184 | for (i = j = 0; i < b->nb_channel_layouts; i++) |
| 185 | if (KNOWN(b->channel_layouts[i])) |
| 186 | b->channel_layouts[j++] = b->channel_layouts[i]; |
| 187 | /* Not optimal: the unknown layouts of b may become known after |
| 188 | another merge. */ |
| 189 | if (!j) |
| 190 | return NULL; |
| 191 | b->nb_channel_layouts = j; |
| 192 | } |
| 193 | MERGE_REF(b, a, channel_layouts, AVFilterChannelLayouts, fail); |
| 194 | return b; |
| 195 | } |
| 196 | |
| 197 | ret_max = a->nb_channel_layouts + b->nb_channel_layouts; |
| 198 | if (!(ret = av_mallocz(sizeof(*ret))) || |
| 199 | !(ret->channel_layouts = av_malloc_array(ret_max, |
| 200 | sizeof(*ret->channel_layouts)))) |
| 201 | goto fail; |
| 202 | |
| 203 | /* a[known] intersect b[known] */ |
| 204 | for (i = 0; i < a->nb_channel_layouts; i++) { |
| 205 | if (!KNOWN(a->channel_layouts[i])) |
| 206 | continue; |
| 207 | for (j = 0; j < b->nb_channel_layouts; j++) { |
| 208 | if (a->channel_layouts[i] == b->channel_layouts[j]) { |
| 209 | ret->channel_layouts[ret_nb++] = a->channel_layouts[i]; |
| 210 | a->channel_layouts[i] = b->channel_layouts[j] = 0; |
| 211 | } |
| 212 | } |
| 213 | } |
| 214 | /* 1st round: a[known] intersect b[generic] |
| 215 | 2nd round: a[generic] intersect b[known] */ |
| 216 | for (round = 0; round < 2; round++) { |
| 217 | for (i = 0; i < a->nb_channel_layouts; i++) { |
| 218 | uint64_t fmt = a->channel_layouts[i], bfmt; |
| 219 | if (!fmt || !KNOWN(fmt)) |
| 220 | continue; |
| 221 | bfmt = FF_COUNT2LAYOUT(av_get_channel_layout_nb_channels(fmt)); |
| 222 | for (j = 0; j < b->nb_channel_layouts; j++) |
| 223 | if (b->channel_layouts[j] == bfmt) |
| 224 | ret->channel_layouts[ret_nb++] = a->channel_layouts[i]; |
| 225 | } |
| 226 | /* 1st round: swap to prepare 2nd round; 2nd round: put it back */ |
| 227 | FFSWAP(AVFilterChannelLayouts *, a, b); |
| 228 | } |
| 229 | /* a[generic] intersect b[generic] */ |
| 230 | for (i = 0; i < a->nb_channel_layouts; i++) { |
| 231 | if (KNOWN(a->channel_layouts[i])) |
| 232 | continue; |
| 233 | for (j = 0; j < b->nb_channel_layouts; j++) |
| 234 | if (a->channel_layouts[i] == b->channel_layouts[j]) |
| 235 | ret->channel_layouts[ret_nb++] = a->channel_layouts[i]; |
| 236 | } |
| 237 | |
| 238 | ret->nb_channel_layouts = ret_nb; |
| 239 | if (!ret->nb_channel_layouts) |
| 240 | goto fail; |
| 241 | MERGE_REF(ret, a, channel_layouts, AVFilterChannelLayouts, fail); |
| 242 | MERGE_REF(ret, b, channel_layouts, AVFilterChannelLayouts, fail); |
| 243 | return ret; |
| 244 | |
| 245 | fail: |
| 246 | if (ret) { |
| 247 | av_freep(&ret->refs); |
| 248 | av_freep(&ret->channel_layouts); |
| 249 | } |
| 250 | av_freep(&ret); |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | int ff_fmt_is_in(int fmt, const int *fmts) |
| 255 | { |
| 256 | const int *p; |
| 257 | |
| 258 | for (p = fmts; *p != -1; p++) { |
| 259 | if (fmt == *p) |
| 260 | return 1; |
| 261 | } |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | #define COPY_INT_LIST(list_copy, list, type) { \ |
| 266 | int count = 0; \ |
| 267 | if (list) \ |
| 268 | for (count = 0; list[count] != -1; count++) \ |
| 269 | ; \ |
| 270 | list_copy = av_calloc(count+1, sizeof(type)); \ |
| 271 | if (list_copy) { \ |
| 272 | memcpy(list_copy, list, sizeof(type) * count); \ |
| 273 | list_copy[count] = -1; \ |
| 274 | } \ |
| 275 | } |
| 276 | |
| 277 | #define MAKE_FORMAT_LIST(type, field, count_field) \ |
| 278 | type *formats; \ |
| 279 | int count = 0; \ |
| 280 | if (fmts) \ |
| 281 | for (count = 0; fmts[count] != -1; count++) \ |
| 282 | ; \ |
| 283 | formats = av_mallocz(sizeof(*formats)); \ |
| 284 | if (!formats) return NULL; \ |
| 285 | formats->count_field = count; \ |
| 286 | if (count) { \ |
| 287 | formats->field = av_malloc_array(count, sizeof(*formats->field)); \ |
| 288 | if (!formats->field) { \ |
| 289 | av_free(formats); \ |
| 290 | return NULL; \ |
| 291 | } \ |
| 292 | } |
| 293 | |
| 294 | AVFilterFormats *ff_make_format_list(const int *fmts) |
| 295 | { |
| 296 | MAKE_FORMAT_LIST(AVFilterFormats, formats, nb_formats); |
| 297 | while (count--) |
| 298 | formats->formats[count] = fmts[count]; |
| 299 | |
| 300 | return formats; |
| 301 | } |
| 302 | |
| 303 | AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts) |
| 304 | { |
| 305 | MAKE_FORMAT_LIST(AVFilterChannelLayouts, |
| 306 | channel_layouts, nb_channel_layouts); |
| 307 | if (count) |
| 308 | memcpy(formats->channel_layouts, fmts, |
| 309 | sizeof(*formats->channel_layouts) * count); |
| 310 | |
| 311 | return formats; |
| 312 | } |
| 313 | |
| 314 | #define ADD_FORMAT(f, fmt, type, list, nb) \ |
| 315 | do { \ |
| 316 | type *fmts; \ |
| 317 | \ |
| 318 | if (!(*f) && !(*f = av_mallocz(sizeof(**f)))) \ |
| 319 | return AVERROR(ENOMEM); \ |
| 320 | \ |
| 321 | fmts = av_realloc((*f)->list, \ |
| 322 | sizeof(*(*f)->list) * ((*f)->nb + 1));\ |
| 323 | if (!fmts) \ |
| 324 | return AVERROR(ENOMEM); \ |
| 325 | \ |
| 326 | (*f)->list = fmts; \ |
| 327 | (*f)->list[(*f)->nb++] = fmt; \ |
| 328 | } while (0) |
| 329 | |
| 330 | int ff_add_format(AVFilterFormats **avff, int64_t fmt) |
| 331 | { |
| 332 | ADD_FORMAT(avff, fmt, int, formats, nb_formats); |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout) |
| 337 | { |
| 338 | av_assert1(!(*l && (*l)->all_layouts)); |
| 339 | ADD_FORMAT(l, channel_layout, uint64_t, channel_layouts, nb_channel_layouts); |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | AVFilterFormats *ff_all_formats(enum AVMediaType type) |
| 344 | { |
| 345 | AVFilterFormats *ret = NULL; |
| 346 | |
| 347 | if (type == AVMEDIA_TYPE_VIDEO) { |
| 348 | const AVPixFmtDescriptor *desc = NULL; |
| 349 | while ((desc = av_pix_fmt_desc_next(desc))) { |
| 350 | if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) |
| 351 | ff_add_format(&ret, av_pix_fmt_desc_get_id(desc)); |
| 352 | } |
| 353 | } else if (type == AVMEDIA_TYPE_AUDIO) { |
| 354 | enum AVSampleFormat fmt = 0; |
| 355 | while (av_get_sample_fmt_name(fmt)) { |
| 356 | ff_add_format(&ret, fmt); |
| 357 | fmt++; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | return ret; |
| 362 | } |
| 363 | |
| 364 | const int64_t avfilter_all_channel_layouts[] = { |
| 365 | #include "all_channel_layouts.inc" |
| 366 | -1 |
| 367 | }; |
| 368 | |
| 369 | // AVFilterFormats *avfilter_make_all_channel_layouts(void) |
| 370 | // { |
| 371 | // return avfilter_make_format64_list(avfilter_all_channel_layouts); |
| 372 | // } |
| 373 | |
| 374 | AVFilterFormats *ff_planar_sample_fmts(void) |
| 375 | { |
| 376 | AVFilterFormats *ret = NULL; |
| 377 | int fmt; |
| 378 | |
| 379 | for (fmt = 0; av_get_bytes_per_sample(fmt)>0; fmt++) |
| 380 | if (av_sample_fmt_is_planar(fmt)) |
| 381 | ff_add_format(&ret, fmt); |
| 382 | |
| 383 | return ret; |
| 384 | } |
| 385 | |
| 386 | AVFilterFormats *ff_all_samplerates(void) |
| 387 | { |
| 388 | AVFilterFormats *ret = av_mallocz(sizeof(*ret)); |
| 389 | return ret; |
| 390 | } |
| 391 | |
| 392 | AVFilterChannelLayouts *ff_all_channel_layouts(void) |
| 393 | { |
| 394 | AVFilterChannelLayouts *ret = av_mallocz(sizeof(*ret)); |
| 395 | if (!ret) |
| 396 | return NULL; |
| 397 | ret->all_layouts = 1; |
| 398 | return ret; |
| 399 | } |
| 400 | |
| 401 | AVFilterChannelLayouts *ff_all_channel_counts(void) |
| 402 | { |
| 403 | AVFilterChannelLayouts *ret = av_mallocz(sizeof(*ret)); |
| 404 | if (!ret) |
| 405 | return NULL; |
| 406 | ret->all_layouts = ret->all_counts = 1; |
| 407 | return ret; |
| 408 | } |
| 409 | |
| 410 | #define FORMATS_REF(f, ref) \ |
| 411 | do { \ |
| 412 | *ref = f; \ |
| 413 | f->refs = av_realloc(f->refs, sizeof(*f->refs) * ++f->refcount); \ |
| 414 | f->refs[f->refcount-1] = ref; \ |
| 415 | } while (0) |
| 416 | |
| 417 | void ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref) |
| 418 | { |
| 419 | FORMATS_REF(f, ref); |
| 420 | } |
| 421 | |
| 422 | void ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref) |
| 423 | { |
| 424 | FORMATS_REF(f, ref); |
| 425 | } |
| 426 | |
| 427 | #define FIND_REF_INDEX(ref, idx) \ |
| 428 | do { \ |
| 429 | int i; \ |
| 430 | for (i = 0; i < (*ref)->refcount; i ++) \ |
| 431 | if((*ref)->refs[i] == ref) { \ |
| 432 | idx = i; \ |
| 433 | break; \ |
| 434 | } \ |
| 435 | } while (0) |
| 436 | |
| 437 | #define FORMATS_UNREF(ref, list) \ |
| 438 | do { \ |
| 439 | int idx = -1; \ |
| 440 | \ |
| 441 | if (!*ref) \ |
| 442 | return; \ |
| 443 | \ |
| 444 | FIND_REF_INDEX(ref, idx); \ |
| 445 | \ |
| 446 | if (idx >= 0) \ |
| 447 | memmove((*ref)->refs + idx, (*ref)->refs + idx + 1, \ |
| 448 | sizeof(*(*ref)->refs) * ((*ref)->refcount - idx - 1)); \ |
| 449 | \ |
| 450 | if(!--(*ref)->refcount) { \ |
| 451 | av_free((*ref)->list); \ |
| 452 | av_free((*ref)->refs); \ |
| 453 | av_free(*ref); \ |
| 454 | } \ |
| 455 | *ref = NULL; \ |
| 456 | } while (0) |
| 457 | |
| 458 | void ff_formats_unref(AVFilterFormats **ref) |
| 459 | { |
| 460 | FORMATS_UNREF(ref, formats); |
| 461 | } |
| 462 | |
| 463 | void ff_channel_layouts_unref(AVFilterChannelLayouts **ref) |
| 464 | { |
| 465 | FORMATS_UNREF(ref, channel_layouts); |
| 466 | } |
| 467 | |
| 468 | #define FORMATS_CHANGEREF(oldref, newref) \ |
| 469 | do { \ |
| 470 | int idx = -1; \ |
| 471 | \ |
| 472 | FIND_REF_INDEX(oldref, idx); \ |
| 473 | \ |
| 474 | if (idx >= 0) { \ |
| 475 | (*oldref)->refs[idx] = newref; \ |
| 476 | *newref = *oldref; \ |
| 477 | *oldref = NULL; \ |
| 478 | } \ |
| 479 | } while (0) |
| 480 | |
| 481 | void ff_channel_layouts_changeref(AVFilterChannelLayouts **oldref, |
| 482 | AVFilterChannelLayouts **newref) |
| 483 | { |
| 484 | FORMATS_CHANGEREF(oldref, newref); |
| 485 | } |
| 486 | |
| 487 | void ff_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref) |
| 488 | { |
| 489 | FORMATS_CHANGEREF(oldref, newref); |
| 490 | } |
| 491 | |
| 492 | #define SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref, list) \ |
| 493 | { \ |
| 494 | int count = 0, i; \ |
| 495 | \ |
| 496 | for (i = 0; i < ctx->nb_inputs; i++) { \ |
| 497 | if (ctx->inputs[i] && !ctx->inputs[i]->out_fmts) { \ |
| 498 | ref(fmts, &ctx->inputs[i]->out_fmts); \ |
| 499 | count++; \ |
| 500 | } \ |
| 501 | } \ |
| 502 | for (i = 0; i < ctx->nb_outputs; i++) { \ |
| 503 | if (ctx->outputs[i] && !ctx->outputs[i]->in_fmts) { \ |
| 504 | ref(fmts, &ctx->outputs[i]->in_fmts); \ |
| 505 | count++; \ |
| 506 | } \ |
| 507 | } \ |
| 508 | \ |
| 509 | if (!count) { \ |
| 510 | av_freep(&fmts->list); \ |
| 511 | av_freep(&fmts->refs); \ |
| 512 | av_freep(&fmts); \ |
| 513 | } \ |
| 514 | } |
| 515 | |
| 516 | void ff_set_common_channel_layouts(AVFilterContext *ctx, |
| 517 | AVFilterChannelLayouts *layouts) |
| 518 | { |
| 519 | SET_COMMON_FORMATS(ctx, layouts, in_channel_layouts, out_channel_layouts, |
| 520 | ff_channel_layouts_ref, channel_layouts); |
| 521 | } |
| 522 | |
| 523 | void ff_set_common_samplerates(AVFilterContext *ctx, |
| 524 | AVFilterFormats *samplerates) |
| 525 | { |
| 526 | SET_COMMON_FORMATS(ctx, samplerates, in_samplerates, out_samplerates, |
| 527 | ff_formats_ref, formats); |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * A helper for query_formats() which sets all links to the same list of |
| 532 | * formats. If there are no links hooked to this filter, the list of formats is |
| 533 | * freed. |
| 534 | */ |
| 535 | void ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats) |
| 536 | { |
| 537 | SET_COMMON_FORMATS(ctx, formats, in_formats, out_formats, |
| 538 | ff_formats_ref, formats); |
| 539 | } |
| 540 | |
| 541 | static int default_query_formats_common(AVFilterContext *ctx, |
| 542 | AVFilterChannelLayouts *(layouts)(void)) |
| 543 | { |
| 544 | enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type : |
| 545 | ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type : |
| 546 | AVMEDIA_TYPE_VIDEO; |
| 547 | |
| 548 | ff_set_common_formats(ctx, ff_all_formats(type)); |
| 549 | if (type == AVMEDIA_TYPE_AUDIO) { |
| 550 | ff_set_common_channel_layouts(ctx, layouts()); |
| 551 | ff_set_common_samplerates(ctx, ff_all_samplerates()); |
| 552 | } |
| 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | int ff_default_query_formats(AVFilterContext *ctx) |
| 558 | { |
| 559 | return default_query_formats_common(ctx, ff_all_channel_layouts); |
| 560 | } |
| 561 | |
| 562 | int ff_query_formats_all(AVFilterContext *ctx) |
| 563 | { |
| 564 | return default_query_formats_common(ctx, ff_all_channel_counts); |
| 565 | } |
| 566 | |
| 567 | /* internal functions for parsing audio format arguments */ |
| 568 | |
| 569 | int ff_parse_pixel_format(enum AVPixelFormat *ret, const char *arg, void *log_ctx) |
| 570 | { |
| 571 | char *tail; |
| 572 | int pix_fmt = av_get_pix_fmt(arg); |
| 573 | if (pix_fmt == AV_PIX_FMT_NONE) { |
| 574 | pix_fmt = strtol(arg, &tail, 0); |
| 575 | if (*tail || !av_pix_fmt_desc_get(pix_fmt)) { |
| 576 | av_log(log_ctx, AV_LOG_ERROR, "Invalid pixel format '%s'\n", arg); |
| 577 | return AVERROR(EINVAL); |
| 578 | } |
| 579 | } |
| 580 | *ret = pix_fmt; |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx) |
| 585 | { |
| 586 | char *tail; |
| 587 | int sfmt = av_get_sample_fmt(arg); |
| 588 | if (sfmt == AV_SAMPLE_FMT_NONE) { |
| 589 | sfmt = strtol(arg, &tail, 0); |
| 590 | if (*tail || av_get_bytes_per_sample(sfmt)<=0) { |
| 591 | av_log(log_ctx, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg); |
| 592 | return AVERROR(EINVAL); |
| 593 | } |
| 594 | } |
| 595 | *ret = sfmt; |
| 596 | return 0; |
| 597 | } |
| 598 | |
| 599 | int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx) |
| 600 | { |
| 601 | AVRational r; |
| 602 | if(av_parse_ratio(&r, arg, INT_MAX, 0, log_ctx) < 0 ||r.num<=0 ||r.den<=0) { |
| 603 | av_log(log_ctx, AV_LOG_ERROR, "Invalid time base '%s'\n", arg); |
| 604 | return AVERROR(EINVAL); |
| 605 | } |
| 606 | *ret = r; |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx) |
| 611 | { |
| 612 | char *tail; |
| 613 | double srate = av_strtod(arg, &tail); |
| 614 | if (*tail || srate < 1 || (int)srate != srate || srate > INT_MAX) { |
| 615 | av_log(log_ctx, AV_LOG_ERROR, "Invalid sample rate '%s'\n", arg); |
| 616 | return AVERROR(EINVAL); |
| 617 | } |
| 618 | *ret = srate; |
| 619 | return 0; |
| 620 | } |
| 621 | |
| 622 | int ff_parse_channel_layout(int64_t *ret, int *nret, const char *arg, |
| 623 | void *log_ctx) |
| 624 | { |
| 625 | char *tail; |
| 626 | int64_t chlayout, count; |
| 627 | |
| 628 | if (nret) { |
| 629 | count = strtol(arg, &tail, 10); |
| 630 | if (*tail == 'c' && !tail[1] && count > 0 && count < 63) { |
| 631 | *nret = count; |
| 632 | *ret = 0; |
| 633 | return 0; |
| 634 | } |
| 635 | } |
| 636 | chlayout = av_get_channel_layout(arg); |
| 637 | if (chlayout == 0) { |
| 638 | chlayout = strtol(arg, &tail, 10); |
| 639 | if (*tail || chlayout == 0) { |
| 640 | av_log(log_ctx, AV_LOG_ERROR, "Invalid channel layout '%s'\n", arg); |
| 641 | return AVERROR(EINVAL); |
| 642 | } |
| 643 | } |
| 644 | *ret = chlayout; |
| 645 | if (nret) |
| 646 | *nret = av_get_channel_layout_nb_channels(chlayout); |
| 647 | return 0; |
| 648 | } |
| 649 | |
| 650 | #ifdef TEST |
| 651 | |
| 652 | #undef printf |
| 653 | |
| 654 | int main(void) |
| 655 | { |
| 656 | const int64_t *cl; |
| 657 | char buf[512]; |
| 658 | |
| 659 | for (cl = avfilter_all_channel_layouts; *cl != -1; cl++) { |
| 660 | av_get_channel_layout_string(buf, sizeof(buf), -1, *cl); |
| 661 | printf("%s\n", buf); |
| 662 | } |
| 663 | |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | #endif |
| 668 | |