1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2001,2002,2003,2004 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include "private/metadata.h"
37 #include "FLAC/assert.h"
40 /****************************************************************************
44 ***************************************************************************/
46 static FLAC__bool copy_bytes_(FLAC__byte **to, const FLAC__byte *from, unsigned bytes)
48 if(bytes > 0 && 0 != from) {
50 if(0 == (x = (FLAC__byte*)malloc(bytes)))
52 memcpy(x, from, bytes);
56 FLAC__ASSERT(0 == from);
57 FLAC__ASSERT(bytes == 0);
63 static FLAC__bool copy_vcentry_(FLAC__StreamMetadata_VorbisComment_Entry *to, const FLAC__StreamMetadata_VorbisComment_Entry *from)
65 to->length = from->length;
66 if(0 == from->entry) {
67 FLAC__ASSERT(from->length == 0);
72 FLAC__ASSERT(from->length > 0);
73 if(0 == (x = (FLAC__byte*)malloc(from->length)))
75 memcpy(x, from->entry, from->length);
81 static FLAC__bool copy_track_(FLAC__StreamMetadata_CueSheet_Track *to, const FLAC__StreamMetadata_CueSheet_Track *from)
83 memcpy(to, from, sizeof(FLAC__StreamMetadata_CueSheet_Track));
84 if(0 == from->indices) {
85 FLAC__ASSERT(from->num_indices == 0);
88 FLAC__StreamMetadata_CueSheet_Index *x;
89 FLAC__ASSERT(from->num_indices > 0);
90 if(0 == (x = (FLAC__StreamMetadata_CueSheet_Index*)malloc(from->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index))))
92 memcpy(x, from->indices, from->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index));
98 static void seektable_calculate_length_(FLAC__StreamMetadata *object)
100 FLAC__ASSERT(0 != object);
101 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
103 object->length = object->data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH;
106 static FLAC__StreamMetadata_SeekPoint *seekpoint_array_new_(unsigned num_points)
108 FLAC__StreamMetadata_SeekPoint *object_array;
110 FLAC__ASSERT(num_points > 0);
112 object_array = (FLAC__StreamMetadata_SeekPoint*)malloc(num_points * sizeof(FLAC__StreamMetadata_SeekPoint));
114 if(0 != object_array) {
116 for(i = 0; i < num_points; i++) {
117 object_array[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
118 object_array[i].stream_offset = 0;
119 object_array[i].frame_samples = 0;
126 static void vorbiscomment_calculate_length_(FLAC__StreamMetadata *object)
130 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
132 object->length = (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN) / 8;
133 object->length += object->data.vorbis_comment.vendor_string.length;
134 object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN) / 8;
135 for(i = 0; i < object->data.vorbis_comment.num_comments; i++) {
136 object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8);
137 object->length += object->data.vorbis_comment.comments[i].length;
141 static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_new_(unsigned num_comments)
143 FLAC__ASSERT(num_comments > 0);
145 return (FLAC__StreamMetadata_VorbisComment_Entry*)calloc(num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry));
148 static void vorbiscomment_entry_array_delete_(FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments)
152 FLAC__ASSERT(0 != object_array && num_comments > 0);
154 for(i = 0; i < num_comments; i++)
155 if(0 != object_array[i].entry)
156 free(object_array[i].entry);
158 if(0 != object_array)
162 static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_copy_(const FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments)
164 FLAC__StreamMetadata_VorbisComment_Entry *return_array;
166 FLAC__ASSERT(0 != object_array);
167 FLAC__ASSERT(num_comments > 0);
169 return_array = vorbiscomment_entry_array_new_(num_comments);
171 if(0 != return_array) {
174 for(i = 0; i < num_comments; i++) {
175 if(!copy_vcentry_(return_array+i, object_array+i)) {
176 vorbiscomment_entry_array_delete_(return_array, num_comments);
185 static FLAC__bool vorbiscomment_set_entry_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry *dest, const FLAC__StreamMetadata_VorbisComment_Entry *src, FLAC__bool copy)
189 FLAC__ASSERT(0 != object);
190 FLAC__ASSERT(0 != dest);
191 FLAC__ASSERT(0 != src);
192 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
193 FLAC__ASSERT((0 != src->entry && src->length > 0) || (0 == src->entry && src->length == 0));
197 /* do the copy first so that if we fail we leave the object untouched */
198 if(copy && (0 != src->entry && src->length > 0)) {
199 if(!copy_vcentry_(dest, src))
203 /* either we're not copying or the src is null */
210 vorbiscomment_calculate_length_(object);
214 static void cuesheet_calculate_length_(FLAC__StreamMetadata *object)
218 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
221 FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN +
222 FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN +
223 FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN +
224 FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN +
225 FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN
228 object->length += object->data.cue_sheet.num_tracks * (
229 FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN +
230 FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN +
231 FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN +
232 FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN +
233 FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN +
234 FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN +
235 FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN
238 for(i = 0; i < object->data.cue_sheet.num_tracks; i++) {
239 object->length += object->data.cue_sheet.tracks[i].num_indices * (
240 FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN +
241 FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN +
242 FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN
247 static FLAC__StreamMetadata_CueSheet_Index *cuesheet_track_index_array_new_(unsigned num_indices)
249 FLAC__ASSERT(num_indices > 0);
251 return (FLAC__StreamMetadata_CueSheet_Index*)calloc(num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index));
254 static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_new_(unsigned num_tracks)
256 FLAC__ASSERT(num_tracks > 0);
258 return (FLAC__StreamMetadata_CueSheet_Track*)calloc(num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track));
261 static void cuesheet_track_array_delete_(FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks)
265 FLAC__ASSERT(0 != object_array && num_tracks > 0);
267 for(i = 0; i < num_tracks; i++) {
268 if(0 != object_array[i].indices) {
269 FLAC__ASSERT(object_array[i].num_indices > 0);
270 free(object_array[i].indices);
274 if(0 != object_array)
278 static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_copy_(const FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks)
280 FLAC__StreamMetadata_CueSheet_Track *return_array;
282 FLAC__ASSERT(0 != object_array);
283 FLAC__ASSERT(num_tracks > 0);
285 return_array = cuesheet_track_array_new_(num_tracks);
287 if(0 != return_array) {
290 for(i = 0; i < num_tracks; i++) {
291 if(!copy_track_(return_array+i, object_array+i)) {
292 cuesheet_track_array_delete_(return_array, num_tracks);
301 static FLAC__bool cuesheet_set_track_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_CueSheet_Track *dest, const FLAC__StreamMetadata_CueSheet_Track *src, FLAC__bool copy)
303 FLAC__StreamMetadata_CueSheet_Index *save;
305 FLAC__ASSERT(0 != object);
306 FLAC__ASSERT(0 != dest);
307 FLAC__ASSERT(0 != src);
308 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
309 FLAC__ASSERT((0 != src->indices && src->num_indices > 0) || (0 == src->indices && src->num_indices == 0));
311 save = dest->indices;
313 /* do the copy first so that if we fail we leave the object untouched */
315 if(!copy_track_(dest, src))
325 cuesheet_calculate_length_(object);
330 /****************************************************************************
332 * Metadata object routines
334 ***************************************************************************/
336 FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_new(FLAC__MetadataType type)
338 FLAC__StreamMetadata *object;
340 if(type > FLAC__MAX_METADATA_TYPE_CODE)
343 object = (FLAC__StreamMetadata*)calloc(1, sizeof(FLAC__StreamMetadata));
345 object->is_last = false;
348 case FLAC__METADATA_TYPE_STREAMINFO:
349 object->length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
351 case FLAC__METADATA_TYPE_PADDING:
352 /* calloc() took care of this for us:
356 case FLAC__METADATA_TYPE_APPLICATION:
357 object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8;
358 /* calloc() took care of this for us:
359 object->data.application.data = 0;
362 case FLAC__METADATA_TYPE_SEEKTABLE:
363 /* calloc() took care of this for us:
365 object->data.seek_table.num_points = 0;
366 object->data.seek_table.points = 0;
369 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
371 object->data.vorbis_comment.vendor_string.length = (unsigned)strlen(FLAC__VENDOR_STRING);
372 if(!copy_bytes_(&object->data.vorbis_comment.vendor_string.entry, (const FLAC__byte*)FLAC__VENDOR_STRING, object->data.vorbis_comment.vendor_string.length)) {
376 vorbiscomment_calculate_length_(object);
379 case FLAC__METADATA_TYPE_CUESHEET:
380 cuesheet_calculate_length_(object);
383 /* calloc() took care of this for us:
385 object->data.unknown.data = 0;
394 FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_clone(const FLAC__StreamMetadata *object)
396 FLAC__StreamMetadata *to;
398 FLAC__ASSERT(0 != object);
400 if(0 != (to = FLAC__metadata_object_new(object->type))) {
401 to->is_last = object->is_last;
402 to->type = object->type;
403 to->length = object->length;
405 case FLAC__METADATA_TYPE_STREAMINFO:
406 memcpy(&to->data.stream_info, &object->data.stream_info, sizeof(FLAC__StreamMetadata_StreamInfo));
408 case FLAC__METADATA_TYPE_PADDING:
410 case FLAC__METADATA_TYPE_APPLICATION:
411 memcpy(&to->data.application.id, &object->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8);
412 if(!copy_bytes_(&to->data.application.data, object->data.application.data, object->length - FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)) {
413 FLAC__metadata_object_delete(to);
417 case FLAC__METADATA_TYPE_SEEKTABLE:
418 to->data.seek_table.num_points = object->data.seek_table.num_points;
419 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))) {
420 FLAC__metadata_object_delete(to);
424 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
425 if(0 != to->data.vorbis_comment.vendor_string.entry) {
426 free(to->data.vorbis_comment.vendor_string.entry);
427 to->data.vorbis_comment.vendor_string.entry = 0;
429 if(!copy_vcentry_(&to->data.vorbis_comment.vendor_string, &object->data.vorbis_comment.vendor_string)) {
430 FLAC__metadata_object_delete(to);
433 if(object->data.vorbis_comment.num_comments == 0) {
434 FLAC__ASSERT(0 == object->data.vorbis_comment.comments);
435 to->data.vorbis_comment.comments = 0;
438 FLAC__ASSERT(0 != object->data.vorbis_comment.comments);
439 to->data.vorbis_comment.comments = vorbiscomment_entry_array_copy_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments);
440 if(0 == to->data.vorbis_comment.comments) {
441 FLAC__metadata_object_delete(to);
445 to->data.vorbis_comment.num_comments = object->data.vorbis_comment.num_comments;
447 case FLAC__METADATA_TYPE_CUESHEET:
448 memcpy(&to->data.cue_sheet, &object->data.cue_sheet, sizeof(FLAC__StreamMetadata_CueSheet));
449 if(object->data.cue_sheet.num_tracks == 0) {
450 FLAC__ASSERT(0 == object->data.cue_sheet.tracks);
453 FLAC__ASSERT(0 != object->data.cue_sheet.tracks);
454 to->data.cue_sheet.tracks = cuesheet_track_array_copy_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks);
455 if(0 == to->data.cue_sheet.tracks) {
456 FLAC__metadata_object_delete(to);
462 if(!copy_bytes_(&to->data.unknown.data, object->data.unknown.data, object->length)) {
463 FLAC__metadata_object_delete(to);
473 void FLAC__metadata_object_delete_data(FLAC__StreamMetadata *object)
475 FLAC__ASSERT(0 != object);
477 switch(object->type) {
478 case FLAC__METADATA_TYPE_STREAMINFO:
479 case FLAC__METADATA_TYPE_PADDING:
481 case FLAC__METADATA_TYPE_APPLICATION:
482 if(0 != object->data.application.data) {
483 free(object->data.application.data);
484 object->data.application.data = 0;
487 case FLAC__METADATA_TYPE_SEEKTABLE:
488 if(0 != object->data.seek_table.points) {
489 free(object->data.seek_table.points);
490 object->data.seek_table.points = 0;
493 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
494 if(0 != object->data.vorbis_comment.vendor_string.entry) {
495 free(object->data.vorbis_comment.vendor_string.entry);
496 object->data.vorbis_comment.vendor_string.entry = 0;
498 if(0 != object->data.vorbis_comment.comments) {
499 FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0);
500 vorbiscomment_entry_array_delete_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments);
503 case FLAC__METADATA_TYPE_CUESHEET:
504 if(0 != object->data.cue_sheet.tracks) {
505 FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0);
506 cuesheet_track_array_delete_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks);
510 if(0 != object->data.unknown.data) {
511 free(object->data.unknown.data);
512 object->data.unknown.data = 0;
518 FLAC_API void FLAC__metadata_object_delete(FLAC__StreamMetadata *object)
520 FLAC__metadata_object_delete_data(object);
524 static FLAC__bool compare_block_data_streaminfo_(const FLAC__StreamMetadata_StreamInfo *block1, const FLAC__StreamMetadata_StreamInfo *block2)
526 if(block1->min_blocksize != block2->min_blocksize)
528 if(block1->max_blocksize != block2->max_blocksize)
530 if(block1->min_framesize != block2->min_framesize)
532 if(block1->max_framesize != block2->max_framesize)
534 if(block1->sample_rate != block2->sample_rate)
536 if(block1->channels != block2->channels)
538 if(block1->bits_per_sample != block2->bits_per_sample)
540 if(block1->total_samples != block2->total_samples)
542 if(0 != memcmp(block1->md5sum, block2->md5sum, 16))
547 static FLAC__bool compare_block_data_application_(const FLAC__StreamMetadata_Application *block1, const FLAC__StreamMetadata_Application *block2, unsigned block_length)
549 FLAC__ASSERT(0 != block1);
550 FLAC__ASSERT(0 != block2);
551 FLAC__ASSERT(block_length >= sizeof(block1->id));
553 if(0 != memcmp(block1->id, block2->id, sizeof(block1->id)))
555 if(0 != block1->data && 0 != block2->data)
556 return 0 == memcmp(block1->data, block2->data, block_length - sizeof(block1->id));
558 return block1->data == block2->data;
561 static FLAC__bool compare_block_data_seektable_(const FLAC__StreamMetadata_SeekTable *block1, const FLAC__StreamMetadata_SeekTable *block2)
565 FLAC__ASSERT(0 != block1);
566 FLAC__ASSERT(0 != block2);
568 if(block1->num_points != block2->num_points)
571 if(0 != block1->points && 0 != block2->points) {
572 for(i = 0; i < block1->num_points; i++) {
573 if(block1->points[i].sample_number != block2->points[i].sample_number)
575 if(block1->points[i].stream_offset != block2->points[i].stream_offset)
577 if(block1->points[i].frame_samples != block2->points[i].frame_samples)
583 return block1->points == block2->points;
586 static FLAC__bool compare_block_data_vorbiscomment_(const FLAC__StreamMetadata_VorbisComment *block1, const FLAC__StreamMetadata_VorbisComment *block2)
590 if(block1->vendor_string.length != block2->vendor_string.length)
593 if(0 != block1->vendor_string.entry && 0 != block2->vendor_string.entry) {
594 if(0 != memcmp(block1->vendor_string.entry, block2->vendor_string.entry, block1->vendor_string.length))
597 else if(block1->vendor_string.entry != block2->vendor_string.entry)
600 if(block1->num_comments != block2->num_comments)
603 for(i = 0; i < block1->num_comments; i++) {
604 if(0 != block1->comments[i].entry && 0 != block2->comments[i].entry) {
605 if(0 != memcmp(block1->comments[i].entry, block2->comments[i].entry, block1->comments[i].length))
608 else if(block1->comments[i].entry != block2->comments[i].entry)
614 static FLAC__bool compare_block_data_cuesheet_(const FLAC__StreamMetadata_CueSheet *block1, const FLAC__StreamMetadata_CueSheet *block2)
618 if(0 != strcmp(block1->media_catalog_number, block2->media_catalog_number))
621 if(block1->lead_in != block2->lead_in)
624 if(block1->is_cd != block2->is_cd)
627 if(block1->num_tracks != block2->num_tracks)
630 if(0 != block1->tracks && 0 != block2->tracks) {
631 FLAC__ASSERT(block1->num_tracks > 0);
632 for(i = 0; i < block1->num_tracks; i++) {
633 if(block1->tracks[i].offset != block2->tracks[i].offset)
635 if(block1->tracks[i].number != block2->tracks[i].number)
637 if(0 != memcmp(block1->tracks[i].isrc, block2->tracks[i].isrc, sizeof(block1->tracks[i].isrc)))
639 if(block1->tracks[i].type != block2->tracks[i].type)
641 if(block1->tracks[i].pre_emphasis != block2->tracks[i].pre_emphasis)
643 if(block1->tracks[i].num_indices != block2->tracks[i].num_indices)
645 if(0 != block1->tracks[i].indices && 0 != block2->tracks[i].indices) {
646 FLAC__ASSERT(block1->tracks[i].num_indices > 0);
647 for(j = 0; j < block1->tracks[i].num_indices; j++) {
648 if(block1->tracks[i].indices[j].offset != block2->tracks[i].indices[j].offset)
650 if(block1->tracks[i].indices[j].number != block2->tracks[i].indices[j].number)
654 else if(block1->tracks[i].indices != block2->tracks[i].indices)
658 else if(block1->tracks != block2->tracks)
663 static FLAC__bool compare_block_data_unknown_(const FLAC__StreamMetadata_Unknown *block1, const FLAC__StreamMetadata_Unknown *block2, unsigned block_length)
665 FLAC__ASSERT(0 != block1);
666 FLAC__ASSERT(0 != block2);
668 if(0 != block1->data && 0 != block2->data)
669 return 0 == memcmp(block1->data, block2->data, block_length);
671 return block1->data == block2->data;
674 FLAC_API FLAC__bool FLAC__metadata_object_is_equal(const FLAC__StreamMetadata *block1, const FLAC__StreamMetadata *block2)
676 FLAC__ASSERT(0 != block1);
677 FLAC__ASSERT(0 != block2);
679 if(block1->type != block2->type) {
682 if(block1->is_last != block2->is_last) {
685 if(block1->length != block2->length) {
688 switch(block1->type) {
689 case FLAC__METADATA_TYPE_STREAMINFO:
690 return compare_block_data_streaminfo_(&block1->data.stream_info, &block2->data.stream_info);
691 case FLAC__METADATA_TYPE_PADDING:
692 return true; /* we don't compare the padding guts */
693 case FLAC__METADATA_TYPE_APPLICATION:
694 return compare_block_data_application_(&block1->data.application, &block2->data.application, block1->length);
695 case FLAC__METADATA_TYPE_SEEKTABLE:
696 return compare_block_data_seektable_(&block1->data.seek_table, &block2->data.seek_table);
697 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
698 return compare_block_data_vorbiscomment_(&block1->data.vorbis_comment, &block2->data.vorbis_comment);
699 case FLAC__METADATA_TYPE_CUESHEET:
700 return compare_block_data_cuesheet_(&block1->data.cue_sheet, &block2->data.cue_sheet);
702 return compare_block_data_unknown_(&block1->data.unknown, &block2->data.unknown, block1->length);
706 FLAC_API FLAC__bool FLAC__metadata_object_application_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, unsigned length, FLAC__bool copy)
710 FLAC__ASSERT(0 != object);
711 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_APPLICATION);
712 FLAC__ASSERT((0 != data && length > 0) || (0 == data && length == 0 && copy == false));
714 save = object->data.application.data;
716 /* do the copy first so that if we fail we leave the object untouched */
718 if(!copy_bytes_(&object->data.application.data, data, length))
722 object->data.application.data = data;
728 object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8 + length;
732 FLAC_API FLAC__bool FLAC__metadata_object_seektable_resize_points(FLAC__StreamMetadata *object, unsigned new_num_points)
734 FLAC__ASSERT(0 != object);
735 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
737 if(0 == object->data.seek_table.points) {
738 FLAC__ASSERT(object->data.seek_table.num_points == 0);
739 if(0 == new_num_points)
741 else if(0 == (object->data.seek_table.points = seekpoint_array_new_(new_num_points)))
745 const unsigned old_size = object->data.seek_table.num_points * sizeof(FLAC__StreamMetadata_SeekPoint);
746 const unsigned new_size = new_num_points * sizeof(FLAC__StreamMetadata_SeekPoint);
748 FLAC__ASSERT(object->data.seek_table.num_points > 0);
751 free(object->data.seek_table.points);
752 object->data.seek_table.points = 0;
754 else if(0 == (object->data.seek_table.points = (FLAC__StreamMetadata_SeekPoint*)realloc(object->data.seek_table.points, new_size)))
757 /* if growing, set new elements to placeholders */
758 if(new_size > old_size) {
760 for(i = object->data.seek_table.num_points; i < new_num_points; i++) {
761 object->data.seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
762 object->data.seek_table.points[i].stream_offset = 0;
763 object->data.seek_table.points[i].frame_samples = 0;
768 object->data.seek_table.num_points = new_num_points;
770 seektable_calculate_length_(object);
774 FLAC_API void FLAC__metadata_object_seektable_set_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point)
776 FLAC__ASSERT(0 != object);
777 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
778 FLAC__ASSERT(point_num < object->data.seek_table.num_points);
780 object->data.seek_table.points[point_num] = point;
783 FLAC_API FLAC__bool FLAC__metadata_object_seektable_insert_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point)
787 FLAC__ASSERT(0 != object);
788 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
789 FLAC__ASSERT(point_num <= object->data.seek_table.num_points);
791 if(!FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points+1))
794 /* move all points >= point_num forward one space */
795 for(i = (int)object->data.seek_table.num_points-1; i > (int)point_num; i--)
796 object->data.seek_table.points[i] = object->data.seek_table.points[i-1];
798 FLAC__metadata_object_seektable_set_point(object, point_num, point);
799 seektable_calculate_length_(object);
803 FLAC_API FLAC__bool FLAC__metadata_object_seektable_delete_point(FLAC__StreamMetadata *object, unsigned point_num)
807 FLAC__ASSERT(0 != object);
808 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
809 FLAC__ASSERT(point_num < object->data.seek_table.num_points);
811 /* move all points > point_num backward one space */
812 for(i = point_num; i < object->data.seek_table.num_points-1; i++)
813 object->data.seek_table.points[i] = object->data.seek_table.points[i+1];
815 return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points-1);
818 FLAC_API FLAC__bool FLAC__metadata_object_seektable_is_legal(const FLAC__StreamMetadata *object)
820 FLAC__ASSERT(0 != object);
821 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
823 return FLAC__format_seektable_is_legal(&object->data.seek_table);
826 FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_placeholders(FLAC__StreamMetadata *object, unsigned num)
828 FLAC__ASSERT(0 != object);
829 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
832 /* WATCHOUT: we rely on the fact that growing the array adds PLACEHOLDERS at the end */
833 return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points + num);
838 FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_point(FLAC__StreamMetadata *object, FLAC__uint64 sample_number)
840 FLAC__StreamMetadata_SeekTable *seek_table;
842 FLAC__ASSERT(0 != object);
843 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
845 seek_table = &object->data.seek_table;
847 if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + 1))
850 seek_table->points[seek_table->num_points - 1].sample_number = sample_number;
851 seek_table->points[seek_table->num_points - 1].stream_offset = 0;
852 seek_table->points[seek_table->num_points - 1].frame_samples = 0;
857 FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_points(FLAC__StreamMetadata *object, FLAC__uint64 sample_numbers[], unsigned num)
859 FLAC__ASSERT(0 != object);
860 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
861 FLAC__ASSERT(0 != sample_numbers || num == 0);
864 FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
867 i = seek_table->num_points;
869 if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num))
872 for(j = 0; j < num; i++, j++) {
873 seek_table->points[i].sample_number = sample_numbers[j];
874 seek_table->points[i].stream_offset = 0;
875 seek_table->points[i].frame_samples = 0;
882 FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points(FLAC__StreamMetadata *object, unsigned num, FLAC__uint64 total_samples)
884 FLAC__ASSERT(0 != object);
885 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
886 FLAC__ASSERT(total_samples > 0);
889 FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
892 i = seek_table->num_points;
894 if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num))
897 for(j = 0; j < num; i++, j++) {
898 seek_table->points[i].sample_number = total_samples * (FLAC__uint64)j / (FLAC__uint64)num;
899 seek_table->points[i].stream_offset = 0;
900 seek_table->points[i].frame_samples = 0;
907 FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_sort(FLAC__StreamMetadata *object, FLAC__bool compact)
911 FLAC__ASSERT(0 != object);
912 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
914 unique = FLAC__format_seektable_sort(&object->data.seek_table);
916 return !compact || FLAC__metadata_object_seektable_resize_points(object, unique);
919 FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_vendor_string(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
921 return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.vendor_string, &entry, copy);
924 FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_resize_comments(FLAC__StreamMetadata *object, unsigned new_num_comments)
926 FLAC__ASSERT(0 != object);
927 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
929 if(0 == object->data.vorbis_comment.comments) {
930 FLAC__ASSERT(object->data.vorbis_comment.num_comments == 0);
931 if(0 == new_num_comments)
933 else if(0 == (object->data.vorbis_comment.comments = vorbiscomment_entry_array_new_(new_num_comments)))
937 const unsigned old_size = object->data.vorbis_comment.num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry);
938 const unsigned new_size = new_num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry);
940 FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0);
942 /* if shrinking, free the truncated entries */
943 if(new_num_comments < object->data.vorbis_comment.num_comments) {
945 for(i = new_num_comments; i < object->data.vorbis_comment.num_comments; i++)
946 if(0 != object->data.vorbis_comment.comments[i].entry)
947 free(object->data.vorbis_comment.comments[i].entry);
951 free(object->data.vorbis_comment.comments);
952 object->data.vorbis_comment.comments = 0;
954 else if(0 == (object->data.vorbis_comment.comments = (FLAC__StreamMetadata_VorbisComment_Entry*)realloc(object->data.vorbis_comment.comments, new_size)))
957 /* if growing, zero all the length/pointers of new elements */
958 if(new_size > old_size)
959 memset(object->data.vorbis_comment.comments + object->data.vorbis_comment.num_comments, 0, new_size - old_size);
962 object->data.vorbis_comment.num_comments = new_num_comments;
964 vorbiscomment_calculate_length_(object);
968 FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
970 FLAC__ASSERT(0 != object);
971 FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments);
973 return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.comments[comment_num], &entry, copy);
976 FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_insert_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
978 FLAC__StreamMetadata_VorbisComment *vc;
980 FLAC__ASSERT(0 != object);
981 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
982 FLAC__ASSERT(comment_num <= object->data.vorbis_comment.num_comments);
984 vc = &object->data.vorbis_comment;
986 if(!FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments+1))
989 /* move all comments >= comment_num forward one space */
990 memmove(&vc->comments[comment_num+1], &vc->comments[comment_num], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-1-comment_num));
991 vc->comments[comment_num].length = 0;
992 vc->comments[comment_num].entry = 0;
994 return FLAC__metadata_object_vorbiscomment_set_comment(object, comment_num, entry, copy);
997 FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_delete_comment(FLAC__StreamMetadata *object, unsigned comment_num)
999 FLAC__StreamMetadata_VorbisComment *vc;
1001 FLAC__ASSERT(0 != object);
1002 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
1003 FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments);
1005 vc = &object->data.vorbis_comment;
1007 /* free the comment at comment_num */
1008 if(0 != vc->comments[comment_num].entry)
1009 free(vc->comments[comment_num].entry);
1011 /* move all comments > comment_num backward one space */
1012 memmove(&vc->comments[comment_num], &vc->comments[comment_num+1], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-comment_num-1));
1013 vc->comments[vc->num_comments-1].length = 0;
1014 vc->comments[vc->num_comments-1].entry = 0;
1016 return FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments-1);
1019 FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_matches(const FLAC__StreamMetadata_VorbisComment_Entry *entry, const char *field_name, unsigned field_name_length)
1021 const FLAC__byte *eq = (FLAC__byte*)memchr(entry->entry, '=', entry->length);
1022 #if defined _MSC_VER || defined __MINGW32__
1023 #define FLAC__STRNCASECMP strnicmp
1025 #define FLAC__STRNCASECMP strncasecmp
1027 return (0 != eq && (unsigned)(eq-entry->entry) == field_name_length && 0 == FLAC__STRNCASECMP(field_name, (const char *)entry->entry, field_name_length));
1028 #undef FLAC__STRNCASECMP
1031 FLAC_API int FLAC__metadata_object_vorbiscomment_find_entry_from(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name)
1033 const unsigned field_name_length = strlen(field_name);
1036 FLAC__ASSERT(0 != object);
1037 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
1039 for(i = offset; i < object->data.vorbis_comment.num_comments; i++) {
1040 if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments + i, field_name, field_name_length))
1047 FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entry_matching(FLAC__StreamMetadata *object, const char *field_name)
1049 const unsigned field_name_length = strlen(field_name);
1052 FLAC__ASSERT(0 != object);
1053 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
1055 for(i = 0; i < object->data.vorbis_comment.num_comments; i++) {
1056 if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments + i, field_name, field_name_length)) {
1057 if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, i))
1067 FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entries_matching(FLAC__StreamMetadata *object, const char *field_name)
1069 FLAC__bool ok = true;
1070 unsigned matching = 0;
1071 const unsigned field_name_length = strlen(field_name);
1074 FLAC__ASSERT(0 != object);
1075 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
1077 /* must delete from end to start otherwise it will interfere with our iteration */
1078 for(i = (int)object->data.vorbis_comment.num_comments - 1; ok && i >= 0; i--) {
1079 if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments + i, field_name, field_name_length)) {
1081 ok &= FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i);
1085 return ok? (int)matching : -1;
1088 FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_new()
1090 return (FLAC__StreamMetadata_CueSheet_Track*)calloc(1, sizeof(FLAC__StreamMetadata_CueSheet_Track));
1093 FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_clone(const FLAC__StreamMetadata_CueSheet_Track *object)
1095 FLAC__StreamMetadata_CueSheet_Track *to;
1097 FLAC__ASSERT(0 != object);
1099 if(0 != (to = FLAC__metadata_object_cuesheet_track_new())) {
1100 if(!copy_track_(to, object)) {
1101 FLAC__metadata_object_cuesheet_track_delete(to);
1109 void FLAC__metadata_object_cuesheet_track_delete_data(FLAC__StreamMetadata_CueSheet_Track *object)
1111 FLAC__ASSERT(0 != object);
1113 if(0 != object->indices) {
1114 FLAC__ASSERT(object->num_indices > 0);
1115 free(object->indices);
1119 FLAC_API void FLAC__metadata_object_cuesheet_track_delete(FLAC__StreamMetadata_CueSheet_Track *object)
1121 FLAC__metadata_object_cuesheet_track_delete_data(object);
1125 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_resize_indices(FLAC__StreamMetadata *object, unsigned track_num, unsigned new_num_indices)
1127 FLAC__StreamMetadata_CueSheet_Track *track;
1128 FLAC__ASSERT(0 != object);
1129 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1130 FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
1132 track = &object->data.cue_sheet.tracks[track_num];
1134 if(0 == track->indices) {
1135 FLAC__ASSERT(track->num_indices == 0);
1136 if(0 == new_num_indices)
1138 else if(0 == (track->indices = cuesheet_track_index_array_new_(new_num_indices)))
1142 const unsigned old_size = track->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index);
1143 const unsigned new_size = new_num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index);
1145 FLAC__ASSERT(track->num_indices > 0);
1148 free(track->indices);
1151 else if(0 == (track->indices = (FLAC__StreamMetadata_CueSheet_Index*)realloc(track->indices, new_size)))
1154 /* if growing, zero all the lengths/pointers of new elements */
1155 if(new_size > old_size)
1156 memset(track->indices + track->num_indices, 0, new_size - old_size);
1159 track->num_indices = new_num_indices;
1161 cuesheet_calculate_length_(object);
1165 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num, FLAC__StreamMetadata_CueSheet_Index index)
1167 FLAC__StreamMetadata_CueSheet_Track *track;
1169 FLAC__ASSERT(0 != object);
1170 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1171 FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
1172 FLAC__ASSERT(index_num <= object->data.cue_sheet.tracks[track_num].num_indices);
1174 track = &object->data.cue_sheet.tracks[track_num];
1176 if(!FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices+1))
1179 /* move all indices >= index_num forward one space */
1180 memmove(&track->indices[index_num+1], &track->indices[index_num], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-1-index_num));
1182 track->indices[index_num] = index;
1183 cuesheet_calculate_length_(object);
1187 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_blank_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num)
1189 FLAC__StreamMetadata_CueSheet_Index index;
1190 memset(&index, 0, sizeof(index));
1191 return FLAC__metadata_object_cuesheet_track_insert_index(object, track_num, index_num, index);
1194 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_delete_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num)
1196 FLAC__StreamMetadata_CueSheet_Track *track;
1198 FLAC__ASSERT(0 != object);
1199 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1200 FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
1201 FLAC__ASSERT(index_num < object->data.cue_sheet.tracks[track_num].num_indices);
1203 track = &object->data.cue_sheet.tracks[track_num];
1205 /* move all indices > index_num backward one space */
1206 memmove(&track->indices[index_num], &track->indices[index_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-index_num-1));
1208 FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices-1);
1209 cuesheet_calculate_length_(object);
1213 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_resize_tracks(FLAC__StreamMetadata *object, unsigned new_num_tracks)
1215 FLAC__ASSERT(0 != object);
1216 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1218 if(0 == object->data.cue_sheet.tracks) {
1219 FLAC__ASSERT(object->data.cue_sheet.num_tracks == 0);
1220 if(0 == new_num_tracks)
1222 else if(0 == (object->data.cue_sheet.tracks = cuesheet_track_array_new_(new_num_tracks)))
1226 const unsigned old_size = object->data.cue_sheet.num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track);
1227 const unsigned new_size = new_num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track);
1229 FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0);
1231 /* if shrinking, free the truncated entries */
1232 if(new_num_tracks < object->data.cue_sheet.num_tracks) {
1234 for(i = new_num_tracks; i < object->data.cue_sheet.num_tracks; i++)
1235 if(0 != object->data.cue_sheet.tracks[i].indices)
1236 free(object->data.cue_sheet.tracks[i].indices);
1240 free(object->data.cue_sheet.tracks);
1241 object->data.cue_sheet.tracks = 0;
1243 else if(0 == (object->data.cue_sheet.tracks = (FLAC__StreamMetadata_CueSheet_Track*)realloc(object->data.cue_sheet.tracks, new_size)))
1246 /* if growing, zero all the lengths/pointers of new elements */
1247 if(new_size > old_size)
1248 memset(object->data.cue_sheet.tracks + object->data.cue_sheet.num_tracks, 0, new_size - old_size);
1251 object->data.cue_sheet.num_tracks = new_num_tracks;
1253 cuesheet_calculate_length_(object);
1257 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_set_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy)
1259 FLAC__ASSERT(0 != object);
1260 FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
1262 return cuesheet_set_track_(object, object->data.cue_sheet.tracks + track_num, track, copy);
1265 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy)
1267 FLAC__StreamMetadata_CueSheet *cs;
1269 FLAC__ASSERT(0 != object);
1270 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1271 FLAC__ASSERT(track_num <= object->data.cue_sheet.num_tracks);
1273 cs = &object->data.cue_sheet;
1275 if(!FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks+1))
1278 /* move all tracks >= track_num forward one space */
1279 memmove(&cs->tracks[track_num+1], &cs->tracks[track_num], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-1-track_num));
1280 cs->tracks[track_num].num_indices = 0;
1281 cs->tracks[track_num].indices = 0;
1283 return FLAC__metadata_object_cuesheet_set_track(object, track_num, track, copy);
1286 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_blank_track(FLAC__StreamMetadata *object, unsigned track_num)
1288 FLAC__StreamMetadata_CueSheet_Track track;
1289 memset(&track, 0, sizeof(track));
1290 return FLAC__metadata_object_cuesheet_insert_track(object, track_num, &track, /*copy=*/false);
1293 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_delete_track(FLAC__StreamMetadata *object, unsigned track_num)
1295 FLAC__StreamMetadata_CueSheet *cs;
1297 FLAC__ASSERT(0 != object);
1298 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1299 FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
1301 cs = &object->data.cue_sheet;
1303 /* free the track at track_num */
1304 if(0 != cs->tracks[track_num].indices)
1305 free(cs->tracks[track_num].indices);
1307 /* move all tracks > track_num backward one space */
1308 memmove(&cs->tracks[track_num], &cs->tracks[track_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-track_num-1));
1309 cs->tracks[cs->num_tracks-1].num_indices = 0;
1310 cs->tracks[cs->num_tracks-1].indices = 0;
1312 return FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks-1);
1315 FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMetadata *object, FLAC__bool check_cd_da_subset, const char **violation)
1317 FLAC__ASSERT(0 != object);
1318 FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
1320 return FLAC__format_cuesheet_is_legal(&object->data.cue_sheet, check_cd_da_subset, violation);