Elliott Hughes | ae0e7bc | 2018-01-12 14:46:04 -0800 | [diff] [blame] | 1 | /* libFLAC - Free Lossless Audio Codec library |
| 2 | * Copyright (C) 2001-2009 Josh Coalson |
| 3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of the Xiph.org Foundation nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #ifdef HAVE_CONFIG_H |
| 34 | # include <config.h> |
| 35 | #endif |
| 36 | |
| 37 | #include <stdlib.h> |
| 38 | #include <string.h> |
| 39 | |
| 40 | #include "private/metadata.h" |
| 41 | #include "private/memory.h" |
| 42 | |
| 43 | #include "FLAC/assert.h" |
| 44 | #include "share/alloc.h" |
| 45 | #include "share/compat.h" |
| 46 | |
| 47 | /* Alias the first (in share/alloc.h) to the second (in src/libFLAC/memory.c). */ |
| 48 | #define safe_malloc_mul_2op_ safe_malloc_mul_2op_p |
| 49 | |
| 50 | |
| 51 | /**************************************************************************** |
| 52 | * |
| 53 | * Local routines |
| 54 | * |
| 55 | ***************************************************************************/ |
| 56 | |
| 57 | /* copy bytes: |
| 58 | * from = NULL && bytes = 0 |
| 59 | * to <- NULL |
| 60 | * from != NULL && bytes > 0 |
| 61 | * to <- copy of from |
| 62 | * else ASSERT |
| 63 | * malloc error leaves 'to' unchanged |
| 64 | */ |
| 65 | static FLAC__bool copy_bytes_(FLAC__byte **to, const FLAC__byte *from, unsigned bytes) |
| 66 | { |
| 67 | FLAC__ASSERT(to != NULL); |
| 68 | if (bytes > 0 && from != NULL) { |
| 69 | FLAC__byte *x; |
| 70 | if ((x = safe_malloc_(bytes)) == NULL) |
| 71 | return false; |
| 72 | memcpy(x, from, bytes); |
| 73 | *to = x; |
| 74 | } |
| 75 | else { |
| 76 | *to = 0; |
| 77 | } |
| 78 | return true; |
| 79 | } |
| 80 | |
| 81 | #if 0 /* UNUSED */ |
| 82 | /* like copy_bytes_(), but free()s the original '*to' if the copy succeeds and the original '*to' is non-NULL */ |
| 83 | static FLAC__bool free_copy_bytes_(FLAC__byte **to, const FLAC__byte *from, unsigned bytes) |
| 84 | { |
| 85 | FLAC__byte *copy; |
| 86 | FLAC__ASSERT(to != NULL); |
| 87 | if (copy_bytes_(©, from, bytes)) { |
| 88 | free(*to); |
| 89 | *to = copy; |
| 90 | return true; |
| 91 | } |
| 92 | else |
| 93 | return false; |
| 94 | } |
| 95 | #endif |
| 96 | |
| 97 | /* reallocate entry to 1 byte larger and add a terminating NUL */ |
| 98 | /* realloc() failure leaves entry unchanged */ |
| 99 | static FLAC__bool ensure_null_terminated_(FLAC__byte **entry, unsigned length) |
| 100 | { |
| 101 | FLAC__byte *x = safe_realloc_add_2op_(*entry, length, /*+*/1); |
| 102 | if (x != NULL) { |
| 103 | x[length] = '\0'; |
| 104 | *entry = x; |
| 105 | return true; |
| 106 | } |
| 107 | else |
| 108 | return false; |
| 109 | } |
| 110 | |
| 111 | /* copies the NUL-terminated C-string 'from' to '*to', leaving '*to' |
| 112 | * unchanged if malloc fails, free()ing the original '*to' if it |
| 113 | * succeeds and the original '*to' was not NULL |
| 114 | */ |
| 115 | static FLAC__bool copy_cstring_(char **to, const char *from) |
| 116 | { |
| 117 | char *copy = strdup(from); |
| 118 | FLAC__ASSERT(to != NULL); |
| 119 | if (copy) { |
| 120 | free(*to); |
| 121 | *to = copy; |
| 122 | return true; |
| 123 | } |
| 124 | else |
| 125 | return false; |
| 126 | } |
| 127 | |
| 128 | static FLAC__bool copy_vcentry_(FLAC__StreamMetadata_VorbisComment_Entry *to, const FLAC__StreamMetadata_VorbisComment_Entry *from) |
| 129 | { |
| 130 | to->length = from->length; |
| 131 | if (from->entry == 0) { |
| 132 | FLAC__ASSERT(from->length == 0); |
| 133 | to->entry = 0; |
| 134 | } |
| 135 | else { |
| 136 | FLAC__byte *x; |
| 137 | FLAC__ASSERT(from->length > 0); |
| 138 | if ((x = safe_malloc_add_2op_(from->length, /*+*/1)) == NULL) |
| 139 | return false; |
| 140 | memcpy(x, from->entry, from->length); |
| 141 | x[from->length] = '\0'; |
| 142 | to->entry = x; |
| 143 | } |
| 144 | return true; |
| 145 | } |
| 146 | |
| 147 | static FLAC__bool copy_track_(FLAC__StreamMetadata_CueSheet_Track *to, const FLAC__StreamMetadata_CueSheet_Track *from) |
| 148 | { |
| 149 | memcpy(to, from, sizeof(FLAC__StreamMetadata_CueSheet_Track)); |
| 150 | if (from->indices == 0) { |
| 151 | FLAC__ASSERT(from->num_indices == 0); |
| 152 | } |
| 153 | else { |
| 154 | FLAC__StreamMetadata_CueSheet_Index *x; |
| 155 | FLAC__ASSERT(from->num_indices > 0); |
| 156 | if ((x = safe_malloc_mul_2op_p(from->num_indices, /*times*/sizeof(FLAC__StreamMetadata_CueSheet_Index))) == NULL) |
| 157 | return false; |
| 158 | memcpy(x, from->indices, from->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index)); |
| 159 | to->indices = x; |
| 160 | } |
| 161 | return true; |
| 162 | } |
| 163 | |
| 164 | static void seektable_calculate_length_(FLAC__StreamMetadata *object) |
| 165 | { |
| 166 | FLAC__ASSERT(object != NULL); |
| 167 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 168 | |
| 169 | object->length = object->data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH; |
| 170 | } |
| 171 | |
| 172 | static FLAC__StreamMetadata_SeekPoint *seekpoint_array_new_(unsigned num_points) |
| 173 | { |
| 174 | FLAC__StreamMetadata_SeekPoint *object_array; |
| 175 | |
| 176 | FLAC__ASSERT(num_points > 0); |
| 177 | |
| 178 | object_array = safe_malloc_mul_2op_p(num_points, /*times*/sizeof(FLAC__StreamMetadata_SeekPoint)); |
| 179 | |
| 180 | if (object_array != NULL) { |
| 181 | unsigned i; |
| 182 | for (i = 0; i < num_points; i++) { |
| 183 | object_array[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER; |
| 184 | object_array[i].stream_offset = 0; |
| 185 | object_array[i].frame_samples = 0; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | return object_array; |
| 190 | } |
| 191 | |
| 192 | static void vorbiscomment_calculate_length_(FLAC__StreamMetadata *object) |
| 193 | { |
| 194 | unsigned i; |
| 195 | |
| 196 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 197 | |
| 198 | object->length = (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN) / 8; |
| 199 | object->length += object->data.vorbis_comment.vendor_string.length; |
| 200 | object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN) / 8; |
| 201 | for (i = 0; i < object->data.vorbis_comment.num_comments; i++) { |
| 202 | object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8); |
| 203 | object->length += object->data.vorbis_comment.comments[i].length; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_new_(unsigned num_comments) |
| 208 | { |
| 209 | FLAC__ASSERT(num_comments > 0); |
| 210 | |
| 211 | return safe_calloc_(num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry)); |
| 212 | } |
| 213 | |
| 214 | static void vorbiscomment_entry_array_delete_(FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments) |
| 215 | { |
| 216 | unsigned i; |
| 217 | |
| 218 | FLAC__ASSERT(object_array != NULL && num_comments > 0); |
| 219 | |
| 220 | for (i = 0; i < num_comments; i++) |
| 221 | free(object_array[i].entry); |
| 222 | |
| 223 | free(object_array); |
| 224 | } |
| 225 | |
| 226 | static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_copy_(const FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments) |
| 227 | { |
| 228 | FLAC__StreamMetadata_VorbisComment_Entry *return_array; |
| 229 | |
| 230 | FLAC__ASSERT(object_array != NULL); |
| 231 | FLAC__ASSERT(num_comments > 0); |
| 232 | |
| 233 | return_array = vorbiscomment_entry_array_new_(num_comments); |
| 234 | |
| 235 | if (return_array != NULL) { |
| 236 | unsigned i; |
| 237 | |
| 238 | for (i = 0; i < num_comments; i++) { |
| 239 | if (!copy_vcentry_(return_array+i, object_array+i)) { |
| 240 | vorbiscomment_entry_array_delete_(return_array, num_comments); |
| 241 | return 0; |
| 242 | } |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | return return_array; |
| 247 | } |
| 248 | |
| 249 | static FLAC__bool vorbiscomment_set_entry_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry *dest, const FLAC__StreamMetadata_VorbisComment_Entry *src, FLAC__bool copy) |
| 250 | { |
| 251 | FLAC__byte *save; |
| 252 | |
| 253 | FLAC__ASSERT(object != NULL); |
| 254 | FLAC__ASSERT(dest != NULL); |
| 255 | FLAC__ASSERT(src != NULL); |
| 256 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 257 | FLAC__ASSERT((src->entry != NULL && src->length > 0) || (src->entry == NULL && src->length == 0)); |
| 258 | |
| 259 | save = dest->entry; |
| 260 | |
| 261 | if (src->entry != NULL) { |
| 262 | if (copy) { |
| 263 | /* do the copy first so that if we fail we leave the dest object untouched */ |
| 264 | if (!copy_vcentry_(dest, src)) |
| 265 | return false; |
| 266 | } |
| 267 | else { |
| 268 | /* we have to make sure that the string we're taking over is null-terminated */ |
| 269 | |
| 270 | /* |
| 271 | * Stripping the const from src->entry is OK since we're taking |
| 272 | * ownership of the pointer. This is a hack around a deficiency |
| 273 | * in the API where the same function is used for 'copy' and |
| 274 | * 'own', but the source entry is a const pointer. If we were |
| 275 | * precise, the 'own' flavor would be a separate function with a |
| 276 | * non-const source pointer. But it's not, so we hack away. |
| 277 | */ |
| 278 | if (!ensure_null_terminated_((FLAC__byte**)(&src->entry), src->length)) |
| 279 | return false; |
| 280 | *dest = *src; |
| 281 | } |
| 282 | } |
| 283 | else { |
| 284 | /* the src is null */ |
| 285 | *dest = *src; |
| 286 | } |
| 287 | |
| 288 | free(save); |
| 289 | |
| 290 | vorbiscomment_calculate_length_(object); |
| 291 | return true; |
| 292 | } |
| 293 | |
| 294 | static int vorbiscomment_find_entry_from_(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name, unsigned field_name_length) |
| 295 | { |
| 296 | unsigned i; |
| 297 | |
| 298 | FLAC__ASSERT(object != NULL); |
| 299 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 300 | FLAC__ASSERT(field_name != NULL); |
| 301 | |
| 302 | for (i = offset; i < object->data.vorbis_comment.num_comments; i++) { |
| 303 | if (FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) |
| 304 | return (int)i; |
| 305 | } |
| 306 | |
| 307 | return -1; |
| 308 | } |
| 309 | |
| 310 | static void cuesheet_calculate_length_(FLAC__StreamMetadata *object) |
| 311 | { |
| 312 | unsigned i; |
| 313 | |
| 314 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 315 | |
| 316 | object->length = ( |
| 317 | FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN + |
| 318 | FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN + |
| 319 | FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + |
| 320 | FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN + |
| 321 | FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN |
| 322 | ) / 8; |
| 323 | |
| 324 | object->length += object->data.cue_sheet.num_tracks * ( |
| 325 | FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN + |
| 326 | FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN + |
| 327 | FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN + |
| 328 | FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + |
| 329 | FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + |
| 330 | FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN + |
| 331 | FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN |
| 332 | ) / 8; |
| 333 | |
| 334 | for (i = 0; i < object->data.cue_sheet.num_tracks; i++) { |
| 335 | object->length += object->data.cue_sheet.tracks[i].num_indices * ( |
| 336 | FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN + |
| 337 | FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN + |
| 338 | FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN |
| 339 | ) / 8; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | static FLAC__StreamMetadata_CueSheet_Index *cuesheet_track_index_array_new_(unsigned num_indices) |
| 344 | { |
| 345 | FLAC__ASSERT(num_indices > 0); |
| 346 | |
| 347 | return safe_calloc_(num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index)); |
| 348 | } |
| 349 | |
| 350 | static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_new_(unsigned num_tracks) |
| 351 | { |
| 352 | FLAC__ASSERT(num_tracks > 0); |
| 353 | |
| 354 | return safe_calloc_(num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track)); |
| 355 | } |
| 356 | |
| 357 | static void cuesheet_track_array_delete_(FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks) |
| 358 | { |
| 359 | unsigned i; |
| 360 | |
| 361 | FLAC__ASSERT(object_array != NULL && num_tracks > 0); |
| 362 | |
| 363 | for (i = 0; i < num_tracks; i++) { |
| 364 | if (object_array[i].indices != 0) { |
| 365 | FLAC__ASSERT(object_array[i].num_indices > 0); |
| 366 | free(object_array[i].indices); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | free(object_array); |
| 371 | } |
| 372 | |
| 373 | static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_copy_(const FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks) |
| 374 | { |
| 375 | FLAC__StreamMetadata_CueSheet_Track *return_array; |
| 376 | |
| 377 | FLAC__ASSERT(object_array != NULL); |
| 378 | FLAC__ASSERT(num_tracks > 0); |
| 379 | |
| 380 | return_array = cuesheet_track_array_new_(num_tracks); |
| 381 | |
| 382 | if (return_array != NULL) { |
| 383 | unsigned i; |
| 384 | |
| 385 | for (i = 0; i < num_tracks; i++) { |
| 386 | if (!copy_track_(return_array+i, object_array+i)) { |
| 387 | cuesheet_track_array_delete_(return_array, num_tracks); |
| 388 | return 0; |
| 389 | } |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | return return_array; |
| 394 | } |
| 395 | |
| 396 | static FLAC__bool cuesheet_set_track_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_CueSheet_Track *dest, const FLAC__StreamMetadata_CueSheet_Track *src, FLAC__bool copy) |
| 397 | { |
| 398 | FLAC__StreamMetadata_CueSheet_Index *save; |
| 399 | |
| 400 | FLAC__ASSERT(object != NULL); |
| 401 | FLAC__ASSERT(dest != NULL); |
| 402 | FLAC__ASSERT(src != NULL); |
| 403 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 404 | FLAC__ASSERT((src->indices != NULL && src->num_indices > 0) || (src->indices == NULL && src->num_indices == 0)); |
| 405 | |
| 406 | save = dest->indices; |
| 407 | |
| 408 | /* do the copy first so that if we fail we leave the object untouched */ |
| 409 | if (copy) { |
| 410 | if (!copy_track_(dest, src)) |
| 411 | return false; |
| 412 | } |
| 413 | else { |
| 414 | *dest = *src; |
| 415 | } |
| 416 | |
| 417 | free(save); |
| 418 | |
| 419 | cuesheet_calculate_length_(object); |
| 420 | return true; |
| 421 | } |
| 422 | |
| 423 | |
| 424 | /**************************************************************************** |
| 425 | * |
| 426 | * Metadata object routines |
| 427 | * |
| 428 | ***************************************************************************/ |
| 429 | |
| 430 | FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_new(FLAC__MetadataType type) |
| 431 | { |
| 432 | FLAC__StreamMetadata *object; |
| 433 | |
| 434 | if (type > FLAC__MAX_METADATA_TYPE) |
| 435 | return 0; |
| 436 | |
| 437 | object = calloc(1, sizeof(FLAC__StreamMetadata)); |
| 438 | if (object != NULL) { |
| 439 | object->is_last = false; |
| 440 | object->type = type; |
| 441 | switch(type) { |
| 442 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 443 | object->length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH; |
| 444 | break; |
| 445 | case FLAC__METADATA_TYPE_PADDING: |
| 446 | /* calloc() took care of this for us: |
| 447 | object->length = 0; |
| 448 | */ |
| 449 | break; |
| 450 | case FLAC__METADATA_TYPE_APPLICATION: |
| 451 | object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
| 452 | /* calloc() took care of this for us: |
| 453 | object->data.application.data = 0; |
| 454 | */ |
| 455 | break; |
| 456 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 457 | /* calloc() took care of this for us: |
| 458 | object->length = 0; |
| 459 | object->data.seek_table.num_points = 0; |
| 460 | object->data.seek_table.points = 0; |
| 461 | */ |
| 462 | break; |
| 463 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 464 | object->data.vorbis_comment.vendor_string.length = (unsigned)strlen(FLAC__VENDOR_STRING); |
| 465 | if (!copy_bytes_(&object->data.vorbis_comment.vendor_string.entry, (const FLAC__byte*)FLAC__VENDOR_STRING, object->data.vorbis_comment.vendor_string.length+1)) { |
| 466 | free(object); |
| 467 | return 0; |
| 468 | } |
| 469 | vorbiscomment_calculate_length_(object); |
| 470 | break; |
| 471 | case FLAC__METADATA_TYPE_CUESHEET: |
| 472 | cuesheet_calculate_length_(object); |
| 473 | break; |
| 474 | case FLAC__METADATA_TYPE_PICTURE: |
| 475 | object->length = ( |
| 476 | FLAC__STREAM_METADATA_PICTURE_TYPE_LEN + |
| 477 | FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN + /* empty mime_type string */ |
| 478 | FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN + /* empty description string */ |
| 479 | FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN + |
| 480 | FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN + |
| 481 | FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN + |
| 482 | FLAC__STREAM_METADATA_PICTURE_COLORS_LEN + |
| 483 | FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN + |
| 484 | 0 /* no data */ |
| 485 | ) / 8; |
| 486 | object->data.picture.type = FLAC__STREAM_METADATA_PICTURE_TYPE_OTHER; |
| 487 | object->data.picture.mime_type = 0; |
| 488 | object->data.picture.description = 0; |
| 489 | /* calloc() took care of this for us: |
| 490 | object->data.picture.width = 0; |
| 491 | object->data.picture.height = 0; |
| 492 | object->data.picture.depth = 0; |
| 493 | object->data.picture.colors = 0; |
| 494 | object->data.picture.data_length = 0; |
| 495 | object->data.picture.data = 0; |
| 496 | */ |
| 497 | /* now initialize mime_type and description with empty strings to make things easier on the client */ |
| 498 | if (!copy_cstring_(&object->data.picture.mime_type, "")) { |
| 499 | free(object); |
| 500 | return 0; |
| 501 | } |
| 502 | if (!copy_cstring_((char**)(&object->data.picture.description), "")) { |
| 503 | free(object->data.picture.mime_type); |
| 504 | free(object); |
| 505 | return 0; |
| 506 | } |
| 507 | break; |
| 508 | default: |
| 509 | /* calloc() took care of this for us: |
| 510 | object->length = 0; |
| 511 | object->data.unknown.data = 0; |
| 512 | */ |
| 513 | break; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | return object; |
| 518 | } |
| 519 | |
| 520 | FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_clone(const FLAC__StreamMetadata *object) |
| 521 | { |
| 522 | FLAC__StreamMetadata *to; |
| 523 | |
| 524 | FLAC__ASSERT(object != NULL); |
| 525 | |
| 526 | if ((to = FLAC__metadata_object_new(object->type)) != NULL) { |
| 527 | to->is_last = object->is_last; |
| 528 | to->type = object->type; |
| 529 | to->length = object->length; |
| 530 | switch(to->type) { |
| 531 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 532 | memcpy(&to->data.stream_info, &object->data.stream_info, sizeof(FLAC__StreamMetadata_StreamInfo)); |
| 533 | break; |
| 534 | case FLAC__METADATA_TYPE_PADDING: |
| 535 | break; |
| 536 | case FLAC__METADATA_TYPE_APPLICATION: |
| 537 | if (to->length < FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8) { /* underflow check */ |
| 538 | FLAC__metadata_object_delete(to); |
| 539 | return 0; |
| 540 | } |
| 541 | memcpy(&to->data.application.id, &object->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8); |
| 542 | if (!copy_bytes_(&to->data.application.data, object->data.application.data, object->length - FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)) { |
| 543 | FLAC__metadata_object_delete(to); |
| 544 | return 0; |
| 545 | } |
| 546 | break; |
| 547 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 548 | to->data.seek_table.num_points = object->data.seek_table.num_points; |
| 549 | if (to->data.seek_table.num_points > UINT32_MAX / sizeof(FLAC__StreamMetadata_SeekPoint)) { /* overflow check */ |
| 550 | FLAC__metadata_object_delete(to); |
| 551 | return 0; |
| 552 | } |
| 553 | if (!copy_bytes_((FLAC__byte**)&to->data.seek_table.points, (FLAC__byte*)object->data.seek_table.points, object->data.seek_table.num_points * sizeof(FLAC__StreamMetadata_SeekPoint))) { |
| 554 | FLAC__metadata_object_delete(to); |
| 555 | return 0; |
| 556 | } |
| 557 | break; |
| 558 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 559 | if (to->data.vorbis_comment.vendor_string.entry != NULL) { |
| 560 | free(to->data.vorbis_comment.vendor_string.entry); |
| 561 | to->data.vorbis_comment.vendor_string.entry = 0; |
| 562 | } |
| 563 | if (!copy_vcentry_(&to->data.vorbis_comment.vendor_string, &object->data.vorbis_comment.vendor_string)) { |
| 564 | FLAC__metadata_object_delete(to); |
| 565 | return 0; |
| 566 | } |
| 567 | if (object->data.vorbis_comment.num_comments == 0) { |
| 568 | to->data.vorbis_comment.comments = 0; |
| 569 | } |
| 570 | else { |
| 571 | to->data.vorbis_comment.comments = vorbiscomment_entry_array_copy_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments); |
| 572 | if (to->data.vorbis_comment.comments == NULL) { |
| 573 | to->data.vorbis_comment.num_comments = 0; |
| 574 | FLAC__metadata_object_delete(to); |
| 575 | return 0; |
| 576 | } |
| 577 | } |
| 578 | to->data.vorbis_comment.num_comments = object->data.vorbis_comment.num_comments; |
| 579 | break; |
| 580 | case FLAC__METADATA_TYPE_CUESHEET: |
| 581 | memcpy(&to->data.cue_sheet, &object->data.cue_sheet, sizeof(FLAC__StreamMetadata_CueSheet)); |
| 582 | if (object->data.cue_sheet.num_tracks == 0) { |
| 583 | FLAC__ASSERT(object->data.cue_sheet.tracks == NULL); |
| 584 | } |
| 585 | else { |
| 586 | FLAC__ASSERT(object->data.cue_sheet.tracks != 0); |
| 587 | to->data.cue_sheet.tracks = cuesheet_track_array_copy_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks); |
| 588 | if (to->data.cue_sheet.tracks == NULL) { |
| 589 | FLAC__metadata_object_delete(to); |
| 590 | return 0; |
| 591 | } |
| 592 | } |
| 593 | break; |
| 594 | case FLAC__METADATA_TYPE_PICTURE: |
| 595 | to->data.picture.type = object->data.picture.type; |
| 596 | if (!copy_cstring_(&to->data.picture.mime_type, object->data.picture.mime_type)) { |
| 597 | FLAC__metadata_object_delete(to); |
| 598 | return 0; |
| 599 | } |
| 600 | if (!copy_cstring_((char**)(&to->data.picture.description), (const char*)object->data.picture.description)) { |
| 601 | FLAC__metadata_object_delete(to); |
| 602 | return 0; |
| 603 | } |
| 604 | to->data.picture.width = object->data.picture.width; |
| 605 | to->data.picture.height = object->data.picture.height; |
| 606 | to->data.picture.depth = object->data.picture.depth; |
| 607 | to->data.picture.colors = object->data.picture.colors; |
| 608 | to->data.picture.data_length = object->data.picture.data_length; |
| 609 | if (!copy_bytes_((&to->data.picture.data), object->data.picture.data, object->data.picture.data_length)) { |
| 610 | FLAC__metadata_object_delete(to); |
| 611 | return 0; |
| 612 | } |
| 613 | break; |
| 614 | default: |
| 615 | if (!copy_bytes_(&to->data.unknown.data, object->data.unknown.data, object->length)) { |
| 616 | FLAC__metadata_object_delete(to); |
| 617 | return 0; |
| 618 | } |
| 619 | break; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | return to; |
| 624 | } |
| 625 | |
| 626 | void FLAC__metadata_object_delete_data(FLAC__StreamMetadata *object) |
| 627 | { |
| 628 | FLAC__ASSERT(object != NULL); |
| 629 | |
| 630 | switch(object->type) { |
| 631 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 632 | case FLAC__METADATA_TYPE_PADDING: |
| 633 | break; |
| 634 | case FLAC__METADATA_TYPE_APPLICATION: |
| 635 | if (object->data.application.data != NULL) { |
| 636 | free(object->data.application.data); |
| 637 | object->data.application.data = NULL; |
| 638 | } |
| 639 | break; |
| 640 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 641 | if (object->data.seek_table.points != NULL) { |
| 642 | free(object->data.seek_table.points); |
| 643 | object->data.seek_table.points = NULL; |
| 644 | } |
| 645 | break; |
| 646 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 647 | if (object->data.vorbis_comment.vendor_string.entry != NULL) { |
| 648 | free(object->data.vorbis_comment.vendor_string.entry); |
| 649 | object->data.vorbis_comment.vendor_string.entry = 0; |
| 650 | } |
| 651 | if (object->data.vorbis_comment.comments != NULL) { |
| 652 | FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0); |
| 653 | vorbiscomment_entry_array_delete_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments); |
| 654 | object->data.vorbis_comment.comments = NULL; |
| 655 | object->data.vorbis_comment.num_comments = 0; |
| 656 | } |
| 657 | break; |
| 658 | case FLAC__METADATA_TYPE_CUESHEET: |
| 659 | if (object->data.cue_sheet.tracks != NULL) { |
| 660 | FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0); |
| 661 | cuesheet_track_array_delete_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks); |
| 662 | object->data.cue_sheet.tracks = NULL; |
| 663 | object->data.cue_sheet.num_tracks = 0; |
| 664 | } |
| 665 | break; |
| 666 | case FLAC__METADATA_TYPE_PICTURE: |
| 667 | if (object->data.picture.mime_type != NULL) { |
| 668 | free(object->data.picture.mime_type); |
| 669 | object->data.picture.mime_type = NULL; |
| 670 | } |
| 671 | if (object->data.picture.description != NULL) { |
| 672 | free(object->data.picture.description); |
| 673 | object->data.picture.description = NULL; |
| 674 | } |
| 675 | if (object->data.picture.data != NULL) { |
| 676 | free(object->data.picture.data); |
| 677 | object->data.picture.data = NULL; |
| 678 | } |
| 679 | break; |
| 680 | default: |
| 681 | if (object->data.unknown.data != NULL) { |
| 682 | free(object->data.unknown.data); |
| 683 | object->data.unknown.data = NULL; |
| 684 | } |
| 685 | break; |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | FLAC_API void FLAC__metadata_object_delete(FLAC__StreamMetadata *object) |
| 690 | { |
| 691 | FLAC__metadata_object_delete_data(object); |
| 692 | free(object); |
| 693 | } |
| 694 | |
| 695 | static FLAC__bool compare_block_data_streaminfo_(const FLAC__StreamMetadata_StreamInfo *block1, const FLAC__StreamMetadata_StreamInfo *block2) |
| 696 | { |
| 697 | if (block1->min_blocksize != block2->min_blocksize) |
| 698 | return false; |
| 699 | if (block1->max_blocksize != block2->max_blocksize) |
| 700 | return false; |
| 701 | if (block1->min_framesize != block2->min_framesize) |
| 702 | return false; |
| 703 | if (block1->max_framesize != block2->max_framesize) |
| 704 | return false; |
| 705 | if (block1->sample_rate != block2->sample_rate) |
| 706 | return false; |
| 707 | if (block1->channels != block2->channels) |
| 708 | return false; |
| 709 | if (block1->bits_per_sample != block2->bits_per_sample) |
| 710 | return false; |
| 711 | if (block1->total_samples != block2->total_samples) |
| 712 | return false; |
| 713 | if (memcmp(block1->md5sum, block2->md5sum, 16) != 0) |
| 714 | return false; |
| 715 | return true; |
| 716 | } |
| 717 | |
| 718 | static FLAC__bool compare_block_data_application_(const FLAC__StreamMetadata_Application *block1, const FLAC__StreamMetadata_Application *block2, unsigned block_length) |
| 719 | { |
| 720 | FLAC__ASSERT(block1 != NULL); |
| 721 | FLAC__ASSERT(block2 != NULL); |
| 722 | FLAC__ASSERT(block_length >= sizeof(block1->id)); |
| 723 | |
| 724 | if (memcmp(block1->id, block2->id, sizeof(block1->id)) != 0) |
| 725 | return false; |
| 726 | if (block1->data != NULL && block2->data != NULL) |
| 727 | return memcmp(block1->data, block2->data, block_length - sizeof(block1->id)) == 0; |
| 728 | else |
| 729 | return block1->data == block2->data; |
| 730 | } |
| 731 | |
| 732 | static FLAC__bool compare_block_data_seektable_(const FLAC__StreamMetadata_SeekTable *block1, const FLAC__StreamMetadata_SeekTable *block2) |
| 733 | { |
| 734 | unsigned i; |
| 735 | |
| 736 | FLAC__ASSERT(block1 != NULL); |
| 737 | FLAC__ASSERT(block2 != NULL); |
| 738 | |
| 739 | if (block1->num_points != block2->num_points) |
| 740 | return false; |
| 741 | |
| 742 | if (block1->points != NULL && block2->points != NULL) { |
| 743 | for (i = 0; i < block1->num_points; i++) { |
| 744 | if (block1->points[i].sample_number != block2->points[i].sample_number) |
| 745 | return false; |
| 746 | if (block1->points[i].stream_offset != block2->points[i].stream_offset) |
| 747 | return false; |
| 748 | if (block1->points[i].frame_samples != block2->points[i].frame_samples) |
| 749 | return false; |
| 750 | } |
| 751 | return true; |
| 752 | } |
| 753 | else |
| 754 | return block1->points == block2->points; |
| 755 | } |
| 756 | |
| 757 | static FLAC__bool compare_block_data_vorbiscomment_(const FLAC__StreamMetadata_VorbisComment *block1, const FLAC__StreamMetadata_VorbisComment *block2) |
| 758 | { |
| 759 | unsigned i; |
| 760 | |
| 761 | if (block1->vendor_string.length != block2->vendor_string.length) |
| 762 | return false; |
| 763 | |
| 764 | if (block1->vendor_string.entry != NULL && block2->vendor_string.entry != NULL) { |
| 765 | if (memcmp(block1->vendor_string.entry, block2->vendor_string.entry, block1->vendor_string.length) != 0) |
| 766 | return false; |
| 767 | } |
| 768 | else if (block1->vendor_string.entry != block2->vendor_string.entry) |
| 769 | return false; |
| 770 | |
| 771 | if (block1->num_comments != block2->num_comments) |
| 772 | return false; |
| 773 | |
| 774 | for (i = 0; i < block1->num_comments; i++) { |
| 775 | if (block1->comments[i].entry != NULL && block2->comments[i].entry != NULL) { |
| 776 | if (memcmp(block1->comments[i].entry, block2->comments[i].entry, block1->comments[i].length) != 0) |
| 777 | return false; |
| 778 | } |
| 779 | else if (block1->comments[i].entry != block2->comments[i].entry) |
| 780 | return false; |
| 781 | } |
| 782 | return true; |
| 783 | } |
| 784 | |
| 785 | static FLAC__bool compare_block_data_cuesheet_(const FLAC__StreamMetadata_CueSheet *block1, const FLAC__StreamMetadata_CueSheet *block2) |
| 786 | { |
| 787 | unsigned i, j; |
| 788 | |
| 789 | if (strcmp(block1->media_catalog_number, block2->media_catalog_number) != 0) |
| 790 | return false; |
| 791 | |
| 792 | if (block1->lead_in != block2->lead_in) |
| 793 | return false; |
| 794 | |
| 795 | if (block1->is_cd != block2->is_cd) |
| 796 | return false; |
| 797 | |
| 798 | if (block1->num_tracks != block2->num_tracks) |
| 799 | return false; |
| 800 | |
| 801 | if (block1->tracks != NULL && block2->tracks != NULL) { |
| 802 | FLAC__ASSERT(block1->num_tracks > 0); |
| 803 | for (i = 0; i < block1->num_tracks; i++) { |
| 804 | if (block1->tracks[i].offset != block2->tracks[i].offset) |
| 805 | return false; |
| 806 | if (block1->tracks[i].number != block2->tracks[i].number) |
| 807 | return false; |
| 808 | if (memcmp(block1->tracks[i].isrc, block2->tracks[i].isrc, sizeof(block1->tracks[i].isrc)) != 0) |
| 809 | return false; |
| 810 | if (block1->tracks[i].type != block2->tracks[i].type) |
| 811 | return false; |
| 812 | if (block1->tracks[i].pre_emphasis != block2->tracks[i].pre_emphasis) |
| 813 | return false; |
| 814 | if (block1->tracks[i].num_indices != block2->tracks[i].num_indices) |
| 815 | return false; |
| 816 | if (block1->tracks[i].indices != NULL && block2->tracks[i].indices != NULL) { |
| 817 | FLAC__ASSERT(block1->tracks[i].num_indices > 0); |
| 818 | for (j = 0; j < block1->tracks[i].num_indices; j++) { |
| 819 | if (block1->tracks[i].indices[j].offset != block2->tracks[i].indices[j].offset) |
| 820 | return false; |
| 821 | if (block1->tracks[i].indices[j].number != block2->tracks[i].indices[j].number) |
| 822 | return false; |
| 823 | } |
| 824 | } |
| 825 | else if (block1->tracks[i].indices != block2->tracks[i].indices) |
| 826 | return false; |
| 827 | } |
| 828 | } |
| 829 | else if (block1->tracks != block2->tracks) |
| 830 | return false; |
| 831 | return true; |
| 832 | } |
| 833 | |
| 834 | static FLAC__bool compare_block_data_picture_(const FLAC__StreamMetadata_Picture *block1, const FLAC__StreamMetadata_Picture *block2) |
| 835 | { |
| 836 | if (block1->type != block2->type) |
| 837 | return false; |
| 838 | if (block1->mime_type != block2->mime_type && (block1->mime_type == 0 || block2->mime_type == 0 || strcmp(block1->mime_type, block2->mime_type))) |
| 839 | return false; |
| 840 | if (block1->description != block2->description && (block1->description == 0 || block2->description == 0 || strcmp((const char *)block1->description, (const char *)block2->description))) |
| 841 | return false; |
| 842 | if (block1->width != block2->width) |
| 843 | return false; |
| 844 | if (block1->height != block2->height) |
| 845 | return false; |
| 846 | if (block1->depth != block2->depth) |
| 847 | return false; |
| 848 | if (block1->colors != block2->colors) |
| 849 | return false; |
| 850 | if (block1->data_length != block2->data_length) |
| 851 | return false; |
| 852 | if (block1->data != block2->data && (block1->data == NULL || block2->data == NULL || memcmp(block1->data, block2->data, block1->data_length))) |
| 853 | return false; |
| 854 | return true; |
| 855 | } |
| 856 | |
| 857 | static FLAC__bool compare_block_data_unknown_(const FLAC__StreamMetadata_Unknown *block1, const FLAC__StreamMetadata_Unknown *block2, unsigned block_length) |
| 858 | { |
| 859 | FLAC__ASSERT(block1 != NULL); |
| 860 | FLAC__ASSERT(block2 != NULL); |
| 861 | |
| 862 | if (block1->data != NULL && block2->data != NULL) |
| 863 | return memcmp(block1->data, block2->data, block_length) == 0; |
| 864 | else |
| 865 | return block1->data == block2->data; |
| 866 | } |
| 867 | |
| 868 | FLAC_API FLAC__bool FLAC__metadata_object_is_equal(const FLAC__StreamMetadata *block1, const FLAC__StreamMetadata *block2) |
| 869 | { |
| 870 | FLAC__ASSERT(block1 != NULL); |
| 871 | FLAC__ASSERT(block2 != NULL); |
| 872 | |
| 873 | if (block1->type != block2->type) { |
| 874 | return false; |
| 875 | } |
| 876 | if (block1->is_last != block2->is_last) { |
| 877 | return false; |
| 878 | } |
| 879 | if (block1->length != block2->length) { |
| 880 | return false; |
| 881 | } |
| 882 | switch(block1->type) { |
| 883 | case FLAC__METADATA_TYPE_STREAMINFO: |
| 884 | return compare_block_data_streaminfo_(&block1->data.stream_info, &block2->data.stream_info); |
| 885 | case FLAC__METADATA_TYPE_PADDING: |
| 886 | return true; /* we don't compare the padding guts */ |
| 887 | case FLAC__METADATA_TYPE_APPLICATION: |
| 888 | return compare_block_data_application_(&block1->data.application, &block2->data.application, block1->length); |
| 889 | case FLAC__METADATA_TYPE_SEEKTABLE: |
| 890 | return compare_block_data_seektable_(&block1->data.seek_table, &block2->data.seek_table); |
| 891 | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| 892 | return compare_block_data_vorbiscomment_(&block1->data.vorbis_comment, &block2->data.vorbis_comment); |
| 893 | case FLAC__METADATA_TYPE_CUESHEET: |
| 894 | return compare_block_data_cuesheet_(&block1->data.cue_sheet, &block2->data.cue_sheet); |
| 895 | case FLAC__METADATA_TYPE_PICTURE: |
| 896 | return compare_block_data_picture_(&block1->data.picture, &block2->data.picture); |
| 897 | default: |
| 898 | return compare_block_data_unknown_(&block1->data.unknown, &block2->data.unknown, block1->length); |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | FLAC_API FLAC__bool FLAC__metadata_object_application_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, unsigned length, FLAC__bool copy) |
| 903 | { |
| 904 | FLAC__byte *save; |
| 905 | |
| 906 | FLAC__ASSERT(object != NULL); |
| 907 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_APPLICATION); |
| 908 | FLAC__ASSERT((data != NULL && length > 0) || (data == NULL && length == 0 && copy == false)); |
| 909 | |
| 910 | save = object->data.application.data; |
| 911 | |
| 912 | /* do the copy first so that if we fail we leave the object untouched */ |
| 913 | if (copy) { |
| 914 | if (!copy_bytes_(&object->data.application.data, data, length)) |
| 915 | return false; |
| 916 | } |
| 917 | else { |
| 918 | object->data.application.data = data; |
| 919 | } |
| 920 | |
| 921 | free(save); |
| 922 | |
| 923 | object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8 + length; |
| 924 | return true; |
| 925 | } |
| 926 | |
| 927 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_resize_points(FLAC__StreamMetadata *object, unsigned new_num_points) |
| 928 | { |
| 929 | FLAC__ASSERT(object != NULL); |
| 930 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 931 | |
| 932 | if (object->data.seek_table.points == 0) { |
| 933 | FLAC__ASSERT(object->data.seek_table.num_points == 0); |
| 934 | if (new_num_points == 0) |
| 935 | return true; |
| 936 | else if ((object->data.seek_table.points = seekpoint_array_new_(new_num_points)) == 0) |
| 937 | return false; |
| 938 | } |
| 939 | else { |
| 940 | const size_t old_size = object->data.seek_table.num_points * sizeof(FLAC__StreamMetadata_SeekPoint); |
| 941 | const size_t new_size = new_num_points * sizeof(FLAC__StreamMetadata_SeekPoint); |
| 942 | |
| 943 | /* overflow check */ |
| 944 | if (new_num_points > UINT32_MAX / sizeof(FLAC__StreamMetadata_SeekPoint)) |
| 945 | return false; |
| 946 | |
| 947 | FLAC__ASSERT(object->data.seek_table.num_points > 0); |
| 948 | |
| 949 | if (new_size == 0) { |
| 950 | free(object->data.seek_table.points); |
| 951 | object->data.seek_table.points = 0; |
| 952 | } |
| 953 | else if ((object->data.seek_table.points = safe_realloc_(object->data.seek_table.points, new_size)) == NULL) |
| 954 | return false; |
| 955 | |
| 956 | /* if growing, set new elements to placeholders */ |
| 957 | if (new_size > old_size) { |
| 958 | unsigned i; |
| 959 | for (i = object->data.seek_table.num_points; i < new_num_points; i++) { |
| 960 | object->data.seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER; |
| 961 | object->data.seek_table.points[i].stream_offset = 0; |
| 962 | object->data.seek_table.points[i].frame_samples = 0; |
| 963 | } |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | object->data.seek_table.num_points = new_num_points; |
| 968 | |
| 969 | seektable_calculate_length_(object); |
| 970 | return true; |
| 971 | } |
| 972 | |
| 973 | FLAC_API void FLAC__metadata_object_seektable_set_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point) |
| 974 | { |
| 975 | FLAC__ASSERT(object != NULL); |
| 976 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 977 | FLAC__ASSERT(point_num < object->data.seek_table.num_points); |
| 978 | |
| 979 | object->data.seek_table.points[point_num] = point; |
| 980 | } |
| 981 | |
| 982 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_insert_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point) |
| 983 | { |
| 984 | int i; |
| 985 | |
| 986 | FLAC__ASSERT(object != NULL); |
| 987 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 988 | FLAC__ASSERT(point_num <= object->data.seek_table.num_points); |
| 989 | |
| 990 | if (!FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points+1)) |
| 991 | return false; |
| 992 | |
| 993 | /* move all points >= point_num forward one space */ |
| 994 | for (i = (int)object->data.seek_table.num_points-1; i > (int)point_num; i--) |
| 995 | object->data.seek_table.points[i] = object->data.seek_table.points[i-1]; |
| 996 | |
| 997 | FLAC__metadata_object_seektable_set_point(object, point_num, point); |
| 998 | seektable_calculate_length_(object); |
| 999 | return true; |
| 1000 | } |
| 1001 | |
| 1002 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_delete_point(FLAC__StreamMetadata *object, unsigned point_num) |
| 1003 | { |
| 1004 | unsigned i; |
| 1005 | |
| 1006 | FLAC__ASSERT(object != NULL); |
| 1007 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1008 | FLAC__ASSERT(point_num < object->data.seek_table.num_points); |
| 1009 | |
| 1010 | /* move all points > point_num backward one space */ |
| 1011 | for (i = point_num; i < object->data.seek_table.num_points-1; i++) |
| 1012 | object->data.seek_table.points[i] = object->data.seek_table.points[i+1]; |
| 1013 | |
| 1014 | return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points-1); |
| 1015 | } |
| 1016 | |
| 1017 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_is_legal(const FLAC__StreamMetadata *object) |
| 1018 | { |
| 1019 | FLAC__ASSERT(object != NULL); |
| 1020 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1021 | |
| 1022 | return FLAC__format_seektable_is_legal(&object->data.seek_table); |
| 1023 | } |
| 1024 | |
| 1025 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_placeholders(FLAC__StreamMetadata *object, unsigned num) |
| 1026 | { |
| 1027 | FLAC__ASSERT(object != NULL); |
| 1028 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1029 | |
| 1030 | if (num > 0) |
| 1031 | /* WATCHOUT: we rely on the fact that growing the array adds PLACEHOLDERS at the end */ |
| 1032 | return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points + num); |
| 1033 | else |
| 1034 | return true; |
| 1035 | } |
| 1036 | |
| 1037 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_point(FLAC__StreamMetadata *object, FLAC__uint64 sample_number) |
| 1038 | { |
| 1039 | FLAC__StreamMetadata_SeekTable *seek_table; |
| 1040 | |
| 1041 | FLAC__ASSERT(object != NULL); |
| 1042 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1043 | |
| 1044 | seek_table = &object->data.seek_table; |
| 1045 | |
| 1046 | if (!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + 1)) |
| 1047 | return false; |
| 1048 | |
| 1049 | seek_table->points[seek_table->num_points - 1].sample_number = sample_number; |
| 1050 | seek_table->points[seek_table->num_points - 1].stream_offset = 0; |
| 1051 | seek_table->points[seek_table->num_points - 1].frame_samples = 0; |
| 1052 | |
| 1053 | return true; |
| 1054 | } |
| 1055 | |
| 1056 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_points(FLAC__StreamMetadata *object, FLAC__uint64 sample_numbers[], unsigned num) |
| 1057 | { |
| 1058 | FLAC__ASSERT(object != NULL); |
| 1059 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1060 | FLAC__ASSERT(sample_numbers != 0 || num == 0); |
| 1061 | |
| 1062 | if (num > 0) { |
| 1063 | FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table; |
| 1064 | unsigned i, j; |
| 1065 | |
| 1066 | i = seek_table->num_points; |
| 1067 | |
| 1068 | if (!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num)) |
| 1069 | return false; |
| 1070 | |
| 1071 | for (j = 0; j < num; i++, j++) { |
| 1072 | seek_table->points[i].sample_number = sample_numbers[j]; |
| 1073 | seek_table->points[i].stream_offset = 0; |
| 1074 | seek_table->points[i].frame_samples = 0; |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | return true; |
| 1079 | } |
| 1080 | |
| 1081 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points(FLAC__StreamMetadata *object, unsigned num, FLAC__uint64 total_samples) |
| 1082 | { |
| 1083 | FLAC__ASSERT(object != NULL); |
| 1084 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1085 | FLAC__ASSERT(total_samples > 0); |
| 1086 | |
| 1087 | if (num > 0 && total_samples > 0) { |
| 1088 | FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table; |
| 1089 | unsigned i, j; |
| 1090 | |
| 1091 | i = seek_table->num_points; |
| 1092 | |
| 1093 | if (!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num)) |
| 1094 | return false; |
| 1095 | |
| 1096 | for (j = 0; j < num; i++, j++) { |
| 1097 | seek_table->points[i].sample_number = total_samples * (FLAC__uint64)j / (FLAC__uint64)num; |
| 1098 | seek_table->points[i].stream_offset = 0; |
| 1099 | seek_table->points[i].frame_samples = 0; |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | return true; |
| 1104 | } |
| 1105 | |
| 1106 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(FLAC__StreamMetadata *object, unsigned samples, FLAC__uint64 total_samples) |
| 1107 | { |
| 1108 | FLAC__ASSERT(object != NULL); |
| 1109 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1110 | FLAC__ASSERT(samples > 0); |
| 1111 | FLAC__ASSERT(total_samples > 0); |
| 1112 | |
| 1113 | if (samples > 0 && total_samples > 0) { |
| 1114 | FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table; |
| 1115 | unsigned i, j; |
| 1116 | FLAC__uint64 num, sample; |
| 1117 | |
| 1118 | num = 1 + total_samples / samples; /* 1+ for the first sample at 0 */ |
| 1119 | /* now account for the fact that we don't place a seekpoint at "total_samples" since samples are number from 0: */ |
| 1120 | if (total_samples % samples == 0) |
| 1121 | num--; |
| 1122 | |
| 1123 | /* Put a strict upper bound on the number of allowed seek points. */ |
| 1124 | if (num > 32768) { |
| 1125 | /* Set the bound and recalculate samples accordingly. */ |
| 1126 | num = 32768; |
| 1127 | samples = total_samples / num; |
| 1128 | } |
| 1129 | |
| 1130 | i = seek_table->num_points; |
| 1131 | |
| 1132 | if (!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + (unsigned)num)) |
| 1133 | return false; |
| 1134 | |
| 1135 | sample = 0; |
| 1136 | for (j = 0; j < num; i++, j++, sample += samples) { |
| 1137 | seek_table->points[i].sample_number = sample; |
| 1138 | seek_table->points[i].stream_offset = 0; |
| 1139 | seek_table->points[i].frame_samples = 0; |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | return true; |
| 1144 | } |
| 1145 | |
| 1146 | FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_sort(FLAC__StreamMetadata *object, FLAC__bool compact) |
| 1147 | { |
| 1148 | unsigned unique; |
| 1149 | |
| 1150 | FLAC__ASSERT(object != NULL); |
| 1151 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| 1152 | |
| 1153 | unique = FLAC__format_seektable_sort(&object->data.seek_table); |
| 1154 | |
| 1155 | return !compact || FLAC__metadata_object_seektable_resize_points(object, unique); |
| 1156 | } |
| 1157 | |
| 1158 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_vendor_string(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| 1159 | { |
| 1160 | if (!FLAC__format_vorbiscomment_entry_value_is_legal(entry.entry, entry.length)) |
| 1161 | return false; |
| 1162 | return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.vendor_string, &entry, copy); |
| 1163 | } |
| 1164 | |
| 1165 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_resize_comments(FLAC__StreamMetadata *object, unsigned new_num_comments) |
| 1166 | { |
| 1167 | FLAC__ASSERT(object != NULL); |
| 1168 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 1169 | |
| 1170 | if (object->data.vorbis_comment.comments == NULL) { |
| 1171 | FLAC__ASSERT(object->data.vorbis_comment.num_comments == 0); |
| 1172 | if (new_num_comments == 0) |
| 1173 | return true; |
| 1174 | else if ((object->data.vorbis_comment.comments = vorbiscomment_entry_array_new_(new_num_comments)) == NULL) |
| 1175 | return false; |
| 1176 | } |
| 1177 | else { |
| 1178 | const size_t old_size = object->data.vorbis_comment.num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry); |
| 1179 | const size_t new_size = new_num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry); |
| 1180 | |
| 1181 | /* overflow check */ |
| 1182 | if (new_num_comments > UINT32_MAX / sizeof(FLAC__StreamMetadata_VorbisComment_Entry)) |
| 1183 | return false; |
| 1184 | |
| 1185 | FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0); |
| 1186 | |
| 1187 | /* if shrinking, free the truncated entries */ |
| 1188 | if (new_num_comments < object->data.vorbis_comment.num_comments) { |
| 1189 | unsigned i; |
| 1190 | for (i = new_num_comments; i < object->data.vorbis_comment.num_comments; i++) |
| 1191 | if (object->data.vorbis_comment.comments[i].entry != NULL) |
| 1192 | free(object->data.vorbis_comment.comments[i].entry); |
| 1193 | } |
| 1194 | |
| 1195 | if (new_size == 0) { |
| 1196 | free(object->data.vorbis_comment.comments); |
| 1197 | object->data.vorbis_comment.comments = 0; |
| 1198 | } |
| 1199 | else { |
| 1200 | FLAC__StreamMetadata_VorbisComment_Entry *oldptr = object->data.vorbis_comment.comments; |
| 1201 | if ((object->data.vorbis_comment.comments = realloc(object->data.vorbis_comment.comments, new_size)) == NULL) { |
| 1202 | vorbiscomment_entry_array_delete_(oldptr, object->data.vorbis_comment.num_comments); |
| 1203 | object->data.vorbis_comment.num_comments = 0; |
| 1204 | return false; |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | /* if growing, zero all the length/pointers of new elements */ |
| 1209 | if (new_size > old_size) |
| 1210 | memset(object->data.vorbis_comment.comments + object->data.vorbis_comment.num_comments, 0, new_size - old_size); |
| 1211 | } |
| 1212 | |
| 1213 | object->data.vorbis_comment.num_comments = new_num_comments; |
| 1214 | |
| 1215 | vorbiscomment_calculate_length_(object); |
| 1216 | return true; |
| 1217 | } |
| 1218 | |
| 1219 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| 1220 | { |
| 1221 | FLAC__ASSERT(object != NULL); |
| 1222 | FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments); |
| 1223 | |
| 1224 | if (!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| 1225 | return false; |
| 1226 | return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.comments[comment_num], &entry, copy); |
| 1227 | } |
| 1228 | |
| 1229 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_insert_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| 1230 | { |
| 1231 | FLAC__StreamMetadata_VorbisComment *vc; |
| 1232 | |
| 1233 | FLAC__ASSERT(object != NULL); |
| 1234 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 1235 | FLAC__ASSERT(comment_num <= object->data.vorbis_comment.num_comments); |
| 1236 | |
| 1237 | if (!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| 1238 | return false; |
| 1239 | |
| 1240 | vc = &object->data.vorbis_comment; |
| 1241 | |
| 1242 | if (!FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments+1)) |
| 1243 | return false; |
| 1244 | |
| 1245 | /* move all comments >= comment_num forward one space */ |
| 1246 | memmove(&vc->comments[comment_num+1], &vc->comments[comment_num], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-1-comment_num)); |
| 1247 | vc->comments[comment_num].length = 0; |
| 1248 | vc->comments[comment_num].entry = 0; |
| 1249 | |
| 1250 | return FLAC__metadata_object_vorbiscomment_set_comment(object, comment_num, entry, copy); |
| 1251 | } |
| 1252 | |
| 1253 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_append_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| 1254 | { |
| 1255 | FLAC__ASSERT(object != NULL); |
| 1256 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 1257 | return FLAC__metadata_object_vorbiscomment_insert_comment(object, object->data.vorbis_comment.num_comments, entry, copy); |
| 1258 | } |
| 1259 | |
| 1260 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_replace_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool all, FLAC__bool copy) |
| 1261 | { |
| 1262 | FLAC__ASSERT(entry.entry != NULL && entry.length > 0); |
| 1263 | |
| 1264 | if (!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| 1265 | return false; |
| 1266 | |
| 1267 | { |
| 1268 | int i; |
| 1269 | size_t field_name_length; |
| 1270 | const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); |
| 1271 | |
| 1272 | if (eq == NULL) |
| 1273 | return false; /* double protection */ |
| 1274 | |
| 1275 | field_name_length = eq-entry.entry; |
| 1276 | |
| 1277 | i = vorbiscomment_find_entry_from_(object, 0, (const char *)entry.entry, field_name_length); |
| 1278 | if (i >= 0) { |
| 1279 | unsigned indx = (unsigned)i; |
| 1280 | if (!FLAC__metadata_object_vorbiscomment_set_comment(object, indx, entry, copy)) |
| 1281 | return false; |
| 1282 | entry = object->data.vorbis_comment.comments[indx]; |
| 1283 | indx++; /* skip over replaced comment */ |
| 1284 | if (all && indx < object->data.vorbis_comment.num_comments) { |
| 1285 | i = vorbiscomment_find_entry_from_(object, indx, (const char *)entry.entry, field_name_length); |
| 1286 | while (i >= 0) { |
| 1287 | indx = (unsigned)i; |
| 1288 | if (!FLAC__metadata_object_vorbiscomment_delete_comment(object, indx)) |
| 1289 | return false; |
| 1290 | if (indx < object->data.vorbis_comment.num_comments) |
| 1291 | i = vorbiscomment_find_entry_from_(object, indx, (const char *)entry.entry, field_name_length); |
| 1292 | else |
| 1293 | i = -1; |
| 1294 | } |
| 1295 | } |
| 1296 | return true; |
| 1297 | } |
| 1298 | else |
| 1299 | return FLAC__metadata_object_vorbiscomment_append_comment(object, entry, copy); |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_delete_comment(FLAC__StreamMetadata *object, unsigned comment_num) |
| 1304 | { |
| 1305 | FLAC__StreamMetadata_VorbisComment *vc; |
| 1306 | |
| 1307 | FLAC__ASSERT(object != NULL); |
| 1308 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 1309 | FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments); |
| 1310 | |
| 1311 | vc = &object->data.vorbis_comment; |
| 1312 | |
| 1313 | /* free the comment at comment_num */ |
| 1314 | free(vc->comments[comment_num].entry); |
| 1315 | |
| 1316 | /* move all comments > comment_num backward one space */ |
| 1317 | memmove(&vc->comments[comment_num], &vc->comments[comment_num+1], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-comment_num-1)); |
| 1318 | vc->comments[vc->num_comments-1].length = 0; |
| 1319 | vc->comments[vc->num_comments-1].entry = 0; |
| 1320 | |
| 1321 | return FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments-1); |
| 1322 | } |
| 1323 | |
| 1324 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(FLAC__StreamMetadata_VorbisComment_Entry *entry, const char *field_name, const char *field_value) |
| 1325 | { |
| 1326 | FLAC__ASSERT(entry != NULL); |
| 1327 | FLAC__ASSERT(field_name != NULL); |
| 1328 | FLAC__ASSERT(field_value != NULL); |
| 1329 | |
| 1330 | if (!FLAC__format_vorbiscomment_entry_name_is_legal(field_name)) |
| 1331 | return false; |
| 1332 | if (!FLAC__format_vorbiscomment_entry_value_is_legal((const FLAC__byte *)field_value, (unsigned)(-1))) |
| 1333 | return false; |
| 1334 | |
| 1335 | { |
| 1336 | const size_t nn = strlen(field_name); |
| 1337 | const size_t nv = strlen(field_value); |
| 1338 | entry->length = nn + 1 /*=*/ + nv; |
| 1339 | if ((entry->entry = safe_malloc_add_4op_(nn, /*+*/1, /*+*/nv, /*+*/1)) == NULL) |
| 1340 | return false; |
| 1341 | memcpy(entry->entry, field_name, nn); |
| 1342 | entry->entry[nn] = '='; |
| 1343 | memcpy(entry->entry+nn+1, field_value, nv); |
| 1344 | entry->entry[entry->length] = '\0'; |
| 1345 | } |
| 1346 | |
| 1347 | return true; |
| 1348 | } |
| 1349 | |
| 1350 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_to_name_value_pair(const FLAC__StreamMetadata_VorbisComment_Entry entry, char **field_name, char **field_value) |
| 1351 | { |
| 1352 | FLAC__ASSERT(entry.entry != NULL && entry.length > 0); |
| 1353 | FLAC__ASSERT(field_name != NULL); |
| 1354 | FLAC__ASSERT(field_value != NULL); |
| 1355 | |
| 1356 | if (!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| 1357 | return false; |
| 1358 | |
| 1359 | { |
| 1360 | const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); |
| 1361 | const size_t nn = eq-entry.entry; |
| 1362 | const size_t nv = entry.length-nn-1; /* -1 for the '=' */ |
| 1363 | |
| 1364 | if (eq == NULL) |
| 1365 | return false; /* double protection */ |
| 1366 | if ((*field_name = safe_malloc_add_2op_(nn, /*+*/1)) == NULL) |
| 1367 | return false; |
| 1368 | if ((*field_value = safe_malloc_add_2op_(nv, /*+*/1)) == NULL) { |
| 1369 | free(*field_name); |
| 1370 | return false; |
| 1371 | } |
| 1372 | memcpy(*field_name, entry.entry, nn); |
| 1373 | memcpy(*field_value, entry.entry+nn+1, nv); |
| 1374 | (*field_name)[nn] = '\0'; |
| 1375 | (*field_value)[nv] = '\0'; |
| 1376 | } |
| 1377 | |
| 1378 | return true; |
| 1379 | } |
| 1380 | |
| 1381 | FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_matches(const FLAC__StreamMetadata_VorbisComment_Entry entry, const char *field_name, unsigned field_name_length) |
| 1382 | { |
| 1383 | FLAC__ASSERT(entry.entry != NULL && entry.length > 0); |
| 1384 | { |
| 1385 | const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); |
| 1386 | return (eq != NULL && (unsigned)(eq-entry.entry) == field_name_length && FLAC__STRNCASECMP(field_name, (const char *)entry.entry, field_name_length) == 0); |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | FLAC_API int FLAC__metadata_object_vorbiscomment_find_entry_from(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name) |
| 1391 | { |
| 1392 | FLAC__ASSERT(field_name != NULL); |
| 1393 | |
| 1394 | return vorbiscomment_find_entry_from_(object, offset, field_name, strlen(field_name)); |
| 1395 | } |
| 1396 | |
| 1397 | FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entry_matching(FLAC__StreamMetadata *object, const char *field_name) |
| 1398 | { |
| 1399 | const unsigned field_name_length = strlen(field_name); |
| 1400 | unsigned i; |
| 1401 | |
| 1402 | FLAC__ASSERT(object != NULL); |
| 1403 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 1404 | |
| 1405 | for (i = 0; i < object->data.vorbis_comment.num_comments; i++) { |
| 1406 | if (FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) { |
| 1407 | if (!FLAC__metadata_object_vorbiscomment_delete_comment(object, i)) |
| 1408 | return -1; |
| 1409 | else |
| 1410 | return 1; |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | return 0; |
| 1415 | } |
| 1416 | |
| 1417 | FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entries_matching(FLAC__StreamMetadata *object, const char *field_name) |
| 1418 | { |
| 1419 | FLAC__bool ok = true; |
| 1420 | unsigned matching = 0; |
| 1421 | const unsigned field_name_length = strlen(field_name); |
| 1422 | int i; |
| 1423 | |
| 1424 | FLAC__ASSERT(object != NULL); |
| 1425 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| 1426 | |
| 1427 | /* must delete from end to start otherwise it will interfere with our iteration */ |
| 1428 | for (i = (int)object->data.vorbis_comment.num_comments - 1; ok && i >= 0; i--) { |
| 1429 | if (FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) { |
| 1430 | matching++; |
| 1431 | ok &= FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i); |
| 1432 | } |
| 1433 | } |
| 1434 | |
| 1435 | return ok? (int)matching : -1; |
| 1436 | } |
| 1437 | |
| 1438 | FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_new(void) |
| 1439 | { |
| 1440 | return calloc(1, sizeof(FLAC__StreamMetadata_CueSheet_Track)); |
| 1441 | } |
| 1442 | |
| 1443 | FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_clone(const FLAC__StreamMetadata_CueSheet_Track *object) |
| 1444 | { |
| 1445 | FLAC__StreamMetadata_CueSheet_Track *to; |
| 1446 | |
| 1447 | FLAC__ASSERT(object != NULL); |
| 1448 | |
| 1449 | if ((to = FLAC__metadata_object_cuesheet_track_new()) != NULL) { |
| 1450 | if (!copy_track_(to, object)) { |
| 1451 | FLAC__metadata_object_cuesheet_track_delete(to); |
| 1452 | return 0; |
| 1453 | } |
| 1454 | } |
| 1455 | |
| 1456 | return to; |
| 1457 | } |
| 1458 | |
| 1459 | void FLAC__metadata_object_cuesheet_track_delete_data(FLAC__StreamMetadata_CueSheet_Track *object) |
| 1460 | { |
| 1461 | FLAC__ASSERT(object != NULL); |
| 1462 | |
| 1463 | if (object->indices != NULL) { |
| 1464 | FLAC__ASSERT(object->num_indices > 0); |
| 1465 | free(object->indices); |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | FLAC_API void FLAC__metadata_object_cuesheet_track_delete(FLAC__StreamMetadata_CueSheet_Track *object) |
| 1470 | { |
| 1471 | FLAC__metadata_object_cuesheet_track_delete_data(object); |
| 1472 | free(object); |
| 1473 | } |
| 1474 | |
| 1475 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_resize_indices(FLAC__StreamMetadata *object, unsigned track_num, unsigned new_num_indices) |
| 1476 | { |
| 1477 | FLAC__StreamMetadata_CueSheet_Track *track; |
| 1478 | FLAC__ASSERT(object != NULL); |
| 1479 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1480 | FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| 1481 | |
| 1482 | track = &object->data.cue_sheet.tracks[track_num]; |
| 1483 | |
| 1484 | if (track->indices == NULL) { |
| 1485 | FLAC__ASSERT(track->num_indices == 0); |
| 1486 | if (new_num_indices == 0) |
| 1487 | return true; |
| 1488 | else if ((track->indices = cuesheet_track_index_array_new_(new_num_indices)) == NULL) |
| 1489 | return false; |
| 1490 | } |
| 1491 | else { |
| 1492 | const size_t old_size = track->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index); |
| 1493 | const size_t new_size = new_num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index); |
| 1494 | |
| 1495 | /* overflow check */ |
| 1496 | if (new_num_indices > UINT32_MAX / sizeof(FLAC__StreamMetadata_CueSheet_Index)) |
| 1497 | return false; |
| 1498 | |
| 1499 | FLAC__ASSERT(track->num_indices > 0); |
| 1500 | |
| 1501 | if (new_size == 0) { |
| 1502 | free(track->indices); |
| 1503 | track->indices = 0; |
| 1504 | } |
| 1505 | else if ((track->indices = safe_realloc_(track->indices, new_size)) == NULL) |
| 1506 | return false; |
| 1507 | |
| 1508 | /* if growing, zero all the lengths/pointers of new elements */ |
| 1509 | if (new_size > old_size) |
| 1510 | memset(track->indices + track->num_indices, 0, new_size - old_size); |
| 1511 | } |
| 1512 | |
| 1513 | track->num_indices = new_num_indices; |
| 1514 | |
| 1515 | cuesheet_calculate_length_(object); |
| 1516 | return true; |
| 1517 | } |
| 1518 | |
| 1519 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num, FLAC__StreamMetadata_CueSheet_Index indx) |
| 1520 | { |
| 1521 | FLAC__StreamMetadata_CueSheet_Track *track; |
| 1522 | |
| 1523 | FLAC__ASSERT(object != NULL); |
| 1524 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1525 | FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| 1526 | FLAC__ASSERT(index_num <= object->data.cue_sheet.tracks[track_num].num_indices); |
| 1527 | |
| 1528 | track = &object->data.cue_sheet.tracks[track_num]; |
| 1529 | |
| 1530 | if (!FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices+1)) |
| 1531 | return false; |
| 1532 | |
| 1533 | /* move all indices >= index_num forward one space */ |
| 1534 | memmove(&track->indices[index_num+1], &track->indices[index_num], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-1-index_num)); |
| 1535 | |
| 1536 | track->indices[index_num] = indx; |
| 1537 | cuesheet_calculate_length_(object); |
| 1538 | return true; |
| 1539 | } |
| 1540 | |
| 1541 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_blank_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num) |
| 1542 | { |
| 1543 | FLAC__StreamMetadata_CueSheet_Index indx; |
| 1544 | memset(&indx, 0, sizeof(indx)); |
| 1545 | return FLAC__metadata_object_cuesheet_track_insert_index(object, track_num, index_num, indx); |
| 1546 | } |
| 1547 | |
| 1548 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_delete_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num) |
| 1549 | { |
| 1550 | FLAC__StreamMetadata_CueSheet_Track *track; |
| 1551 | |
| 1552 | FLAC__ASSERT(object != NULL); |
| 1553 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1554 | FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| 1555 | FLAC__ASSERT(index_num < object->data.cue_sheet.tracks[track_num].num_indices); |
| 1556 | |
| 1557 | track = &object->data.cue_sheet.tracks[track_num]; |
| 1558 | |
| 1559 | /* move all indices > index_num backward one space */ |
| 1560 | memmove(&track->indices[index_num], &track->indices[index_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-index_num-1)); |
| 1561 | |
| 1562 | FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices-1); |
| 1563 | cuesheet_calculate_length_(object); |
| 1564 | return true; |
| 1565 | } |
| 1566 | |
| 1567 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_resize_tracks(FLAC__StreamMetadata *object, unsigned new_num_tracks) |
| 1568 | { |
| 1569 | FLAC__ASSERT(object != NULL); |
| 1570 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1571 | |
| 1572 | if (object->data.cue_sheet.tracks == NULL) { |
| 1573 | FLAC__ASSERT(object->data.cue_sheet.num_tracks == 0); |
| 1574 | if (new_num_tracks == 0) |
| 1575 | return true; |
| 1576 | else if ((object->data.cue_sheet.tracks = cuesheet_track_array_new_(new_num_tracks)) == NULL) |
| 1577 | return false; |
| 1578 | } |
| 1579 | else { |
| 1580 | const size_t old_size = object->data.cue_sheet.num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track); |
| 1581 | const size_t new_size = new_num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track); |
| 1582 | |
| 1583 | /* overflow check */ |
| 1584 | if (new_num_tracks > UINT32_MAX / sizeof(FLAC__StreamMetadata_CueSheet_Track)) |
| 1585 | return false; |
| 1586 | |
| 1587 | FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0); |
| 1588 | |
| 1589 | /* if shrinking, free the truncated entries */ |
| 1590 | if (new_num_tracks < object->data.cue_sheet.num_tracks) { |
| 1591 | unsigned i; |
| 1592 | for (i = new_num_tracks; i < object->data.cue_sheet.num_tracks; i++) |
| 1593 | free(object->data.cue_sheet.tracks[i].indices); |
| 1594 | } |
| 1595 | |
| 1596 | if (new_size == 0) { |
| 1597 | free(object->data.cue_sheet.tracks); |
| 1598 | object->data.cue_sheet.tracks = 0; |
| 1599 | } |
| 1600 | else if ((object->data.cue_sheet.tracks = safe_realloc_(object->data.cue_sheet.tracks, new_size)) == NULL) |
| 1601 | return false; |
| 1602 | |
| 1603 | /* if growing, zero all the lengths/pointers of new elements */ |
| 1604 | if (new_size > old_size) |
| 1605 | memset(object->data.cue_sheet.tracks + object->data.cue_sheet.num_tracks, 0, new_size - old_size); |
| 1606 | } |
| 1607 | |
| 1608 | object->data.cue_sheet.num_tracks = new_num_tracks; |
| 1609 | |
| 1610 | cuesheet_calculate_length_(object); |
| 1611 | return true; |
| 1612 | } |
| 1613 | |
| 1614 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_set_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy) |
| 1615 | { |
| 1616 | FLAC__ASSERT(object != NULL); |
| 1617 | FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| 1618 | |
| 1619 | return cuesheet_set_track_(object, object->data.cue_sheet.tracks + track_num, track, copy); |
| 1620 | } |
| 1621 | |
| 1622 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy) |
| 1623 | { |
| 1624 | FLAC__StreamMetadata_CueSheet *cs; |
| 1625 | |
| 1626 | FLAC__ASSERT(object != NULL); |
| 1627 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1628 | FLAC__ASSERT(track_num <= object->data.cue_sheet.num_tracks); |
| 1629 | |
| 1630 | cs = &object->data.cue_sheet; |
| 1631 | |
| 1632 | if (!FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks+1)) |
| 1633 | return false; |
| 1634 | |
| 1635 | /* move all tracks >= track_num forward one space */ |
| 1636 | memmove(&cs->tracks[track_num+1], &cs->tracks[track_num], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-1-track_num)); |
| 1637 | cs->tracks[track_num].num_indices = 0; |
| 1638 | cs->tracks[track_num].indices = 0; |
| 1639 | |
| 1640 | return FLAC__metadata_object_cuesheet_set_track(object, track_num, track, copy); |
| 1641 | } |
| 1642 | |
| 1643 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_blank_track(FLAC__StreamMetadata *object, unsigned track_num) |
| 1644 | { |
| 1645 | FLAC__StreamMetadata_CueSheet_Track track; |
| 1646 | memset(&track, 0, sizeof(track)); |
| 1647 | return FLAC__metadata_object_cuesheet_insert_track(object, track_num, &track, /*copy=*/false); |
| 1648 | } |
| 1649 | |
| 1650 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_delete_track(FLAC__StreamMetadata *object, unsigned track_num) |
| 1651 | { |
| 1652 | FLAC__StreamMetadata_CueSheet *cs; |
| 1653 | |
| 1654 | FLAC__ASSERT(object != NULL); |
| 1655 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1656 | FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| 1657 | |
| 1658 | cs = &object->data.cue_sheet; |
| 1659 | |
| 1660 | /* free the track at track_num */ |
| 1661 | free(cs->tracks[track_num].indices); |
| 1662 | |
| 1663 | /* move all tracks > track_num backward one space */ |
| 1664 | memmove(&cs->tracks[track_num], &cs->tracks[track_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-track_num-1)); |
| 1665 | cs->tracks[cs->num_tracks-1].num_indices = 0; |
| 1666 | cs->tracks[cs->num_tracks-1].indices = 0; |
| 1667 | |
| 1668 | return FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks-1); |
| 1669 | } |
| 1670 | |
| 1671 | FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMetadata *object, FLAC__bool check_cd_da_subset, const char **violation) |
| 1672 | { |
| 1673 | FLAC__ASSERT(object != NULL); |
| 1674 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1675 | |
| 1676 | return FLAC__format_cuesheet_is_legal(&object->data.cue_sheet, check_cd_da_subset, violation); |
| 1677 | } |
| 1678 | |
| 1679 | static FLAC__uint64 get_index_01_offset_(const FLAC__StreamMetadata_CueSheet *cs, unsigned track) |
| 1680 | { |
| 1681 | if (track >= (cs->num_tracks-1) || cs->tracks[track].num_indices < 1) |
| 1682 | return 0; |
| 1683 | else if (cs->tracks[track].indices[0].number == 1) |
| 1684 | return cs->tracks[track].indices[0].offset + cs->tracks[track].offset + cs->lead_in; |
| 1685 | else if (cs->tracks[track].num_indices < 2) |
| 1686 | return 0; |
| 1687 | else if (cs->tracks[track].indices[1].number == 1) |
| 1688 | return cs->tracks[track].indices[1].offset + cs->tracks[track].offset + cs->lead_in; |
| 1689 | else |
| 1690 | return 0; |
| 1691 | } |
| 1692 | |
| 1693 | static FLAC__uint32 cddb_add_digits_(FLAC__uint32 x) |
| 1694 | { |
| 1695 | FLAC__uint32 n = 0; |
| 1696 | while (x) { |
| 1697 | n += (x%10); |
| 1698 | x /= 10; |
| 1699 | } |
| 1700 | return n; |
| 1701 | } |
| 1702 | |
| 1703 | /*@@@@add to tests*/ |
| 1704 | FLAC_API FLAC__uint32 FLAC__metadata_object_cuesheet_calculate_cddb_id(const FLAC__StreamMetadata *object) |
| 1705 | { |
| 1706 | const FLAC__StreamMetadata_CueSheet *cs; |
| 1707 | |
| 1708 | FLAC__ASSERT(object != NULL); |
| 1709 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| 1710 | |
| 1711 | cs = &object->data.cue_sheet; |
| 1712 | |
| 1713 | if (cs->num_tracks < 2) /* need at least one real track and the lead-out track */ |
| 1714 | return 0; |
| 1715 | |
| 1716 | { |
| 1717 | FLAC__uint32 i, length, sum = 0; |
| 1718 | for (i = 0; i < (cs->num_tracks-1); i++) /* -1 to avoid counting the lead-out */ |
| 1719 | sum += cddb_add_digits_((FLAC__uint32)(get_index_01_offset_(cs, i) / 44100)); |
| 1720 | length = (FLAC__uint32)((cs->tracks[cs->num_tracks-1].offset+cs->lead_in) / 44100) - (FLAC__uint32)(get_index_01_offset_(cs, 0) / 44100); |
| 1721 | |
| 1722 | return (sum % 0xFF) << 24 | length << 8 | (FLAC__uint32)(cs->num_tracks-1); |
| 1723 | } |
| 1724 | } |
| 1725 | |
| 1726 | FLAC_API FLAC__bool FLAC__metadata_object_picture_set_mime_type(FLAC__StreamMetadata *object, char *mime_type, FLAC__bool copy) |
| 1727 | { |
| 1728 | char *old; |
| 1729 | size_t old_length, new_length; |
| 1730 | |
| 1731 | FLAC__ASSERT(object != NULL); |
| 1732 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| 1733 | FLAC__ASSERT(mime_type != NULL); |
| 1734 | |
| 1735 | old = object->data.picture.mime_type; |
| 1736 | old_length = old? strlen(old) : 0; |
| 1737 | new_length = strlen(mime_type); |
| 1738 | |
| 1739 | /* do the copy first so that if we fail we leave the object untouched */ |
| 1740 | if (copy) { |
| 1741 | if (new_length >= SIZE_MAX) /* overflow check */ |
| 1742 | return false; |
| 1743 | if (!copy_bytes_((FLAC__byte**)(&object->data.picture.mime_type), (FLAC__byte*)mime_type, new_length+1)) |
| 1744 | return false; |
| 1745 | } |
| 1746 | else { |
| 1747 | object->data.picture.mime_type = mime_type; |
| 1748 | } |
| 1749 | |
| 1750 | free(old); |
| 1751 | |
| 1752 | object->length -= old_length; |
| 1753 | object->length += new_length; |
| 1754 | return true; |
| 1755 | } |
| 1756 | |
| 1757 | FLAC_API FLAC__bool FLAC__metadata_object_picture_set_description(FLAC__StreamMetadata *object, FLAC__byte *description, FLAC__bool copy) |
| 1758 | { |
| 1759 | FLAC__byte *old; |
| 1760 | size_t old_length, new_length; |
| 1761 | |
| 1762 | FLAC__ASSERT(object != NULL); |
| 1763 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| 1764 | FLAC__ASSERT(description != NULL); |
| 1765 | |
| 1766 | old = object->data.picture.description; |
| 1767 | old_length = old? strlen((const char *)old) : 0; |
| 1768 | new_length = strlen((const char *)description); |
| 1769 | |
| 1770 | /* do the copy first so that if we fail we leave the object untouched */ |
| 1771 | if (copy) { |
| 1772 | if (new_length >= SIZE_MAX) /* overflow check */ |
| 1773 | return false; |
| 1774 | if (!copy_bytes_(&object->data.picture.description, description, new_length+1)) |
| 1775 | return false; |
| 1776 | } |
| 1777 | else { |
| 1778 | object->data.picture.description = description; |
| 1779 | } |
| 1780 | |
| 1781 | free(old); |
| 1782 | |
| 1783 | object->length -= old_length; |
| 1784 | object->length += new_length; |
| 1785 | return true; |
| 1786 | } |
| 1787 | |
| 1788 | FLAC_API FLAC__bool FLAC__metadata_object_picture_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, FLAC__uint32 length, FLAC__bool copy) |
| 1789 | { |
| 1790 | FLAC__byte *old; |
| 1791 | |
| 1792 | FLAC__ASSERT(object != NULL); |
| 1793 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| 1794 | FLAC__ASSERT((data != NULL && length > 0) || (data == NULL && length == 0 && copy == false)); |
| 1795 | |
| 1796 | old = object->data.picture.data; |
| 1797 | |
| 1798 | /* do the copy first so that if we fail we leave the object untouched */ |
| 1799 | if (copy) { |
| 1800 | if (!copy_bytes_(&object->data.picture.data, data, length)) |
| 1801 | return false; |
| 1802 | } |
| 1803 | else { |
| 1804 | object->data.picture.data = data; |
| 1805 | } |
| 1806 | |
| 1807 | free(old); |
| 1808 | |
| 1809 | object->length -= object->data.picture.data_length; |
| 1810 | object->data.picture.data_length = length; |
| 1811 | object->length += length; |
| 1812 | return true; |
| 1813 | } |
| 1814 | |
| 1815 | FLAC_API FLAC__bool FLAC__metadata_object_picture_is_legal(const FLAC__StreamMetadata *object, const char **violation) |
| 1816 | { |
| 1817 | FLAC__ASSERT(object != NULL); |
| 1818 | FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| 1819 | |
| 1820 | return FLAC__format_picture_is_legal(&object->data.picture, violation); |
| 1821 | } |