summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/libflac/src/libFLAC/metadata_object.c
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/libflac/src/libFLAC/metadata_object.c')
-rw-r--r--3rdparty/libflac/src/libFLAC/metadata_object.c1819
1 files changed, 0 insertions, 1819 deletions
diff --git a/3rdparty/libflac/src/libFLAC/metadata_object.c b/3rdparty/libflac/src/libFLAC/metadata_object.c
deleted file mode 100644
index 6f8bccf4563..00000000000
--- a/3rdparty/libflac/src/libFLAC/metadata_object.c
+++ /dev/null
@@ -1,1819 +0,0 @@
-/* libFLAC - Free Lossless Audio Codec library
- * Copyright (C) 2001,2002,2003,2004,2005,2006,2007 Josh Coalson
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * - Neither the name of the Xiph.org Foundation nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "private/metadata.h"
-
-#include "FLAC/assert.h"
-#include "share/alloc.h"
-
-
-/****************************************************************************
- *
- * Local routines
- *
- ***************************************************************************/
-
-/* copy bytes:
- * from = NULL && bytes = 0
- * to <- NULL
- * from != NULL && bytes > 0
- * to <- copy of from
- * else ASSERT
- * malloc error leaves 'to' unchanged
- */
-static FLAC__bool copy_bytes_(FLAC__byte **to, const FLAC__byte *from, unsigned bytes)
-{
- FLAC__ASSERT(0 != to);
- if(bytes > 0 && 0 != from) {
- FLAC__byte *x;
- if(0 == (x = (FLAC__byte*)safe_malloc_(bytes)))
- return false;
- memcpy(x, from, bytes);
- *to = x;
- }
- else {
- FLAC__ASSERT(0 == from);
- FLAC__ASSERT(bytes == 0);
- *to = 0;
- }
- return true;
-}
-
-#if 0 /* UNUSED */
-/* like copy_bytes_(), but free()s the original '*to' if the copy succeeds and the original '*to' is non-NULL */
-static FLAC__bool free_copy_bytes_(FLAC__byte **to, const FLAC__byte *from, unsigned bytes)
-{
- FLAC__byte *copy;
- FLAC__ASSERT(0 != to);
- if(copy_bytes_(&copy, from, bytes)) {
- if(*to)
- free(*to);
- *to = copy;
- return true;
- }
- else
- return false;
-}
-#endif
-
-/* reallocate entry to 1 byte larger and add a terminating NUL */
-/* realloc() failure leaves entry unchanged */
-static FLAC__bool ensure_null_terminated_(FLAC__byte **entry, unsigned length)
-{
- FLAC__byte *x = (FLAC__byte*)safe_realloc_add_2op_(*entry, length, /*+*/1);
- if(0 != x) {
- x[length] = '\0';
- *entry = x;
- return true;
- }
- else
- return false;
-}
-
-/* copies the NUL-terminated C-string 'from' to '*to', leaving '*to'
- * unchanged if malloc fails, free()ing the original '*to' if it
- * succeeds and the original '*to' was not NULL
- */
-static FLAC__bool copy_cstring_(char **to, const char *from)
-{
- char *copy = strdup(from);
- FLAC__ASSERT(to);
- if(copy) {
- if(*to)
- free(*to);
- *to = copy;
- return true;
- }
- else
- return false;
-}
-
-static FLAC__bool copy_vcentry_(FLAC__StreamMetadata_VorbisComment_Entry *to, const FLAC__StreamMetadata_VorbisComment_Entry *from)
-{
- to->length = from->length;
- if(0 == from->entry) {
- FLAC__ASSERT(from->length == 0);
- to->entry = 0;
- }
- else {
- FLAC__byte *x;
- FLAC__ASSERT(from->length > 0);
- if(0 == (x = (FLAC__byte*)safe_malloc_add_2op_(from->length, /*+*/1)))
- return false;
- memcpy(x, from->entry, from->length);
- x[from->length] = '\0';
- to->entry = x;
- }
- return true;
-}
-
-static FLAC__bool copy_track_(FLAC__StreamMetadata_CueSheet_Track *to, const FLAC__StreamMetadata_CueSheet_Track *from)
-{
- memcpy(to, from, sizeof(FLAC__StreamMetadata_CueSheet_Track));
- if(0 == from->indices) {
- FLAC__ASSERT(from->num_indices == 0);
- }
- else {
- FLAC__StreamMetadata_CueSheet_Index *x;
- FLAC__ASSERT(from->num_indices > 0);
- if(0 == (x = (FLAC__StreamMetadata_CueSheet_Index*)safe_malloc_mul_2op_(from->num_indices, /*times*/sizeof(FLAC__StreamMetadata_CueSheet_Index))))
- return false;
- memcpy(x, from->indices, from->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index));
- to->indices = x;
- }
- return true;
-}
-
-static void seektable_calculate_length_(FLAC__StreamMetadata *object)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
-
- object->length = object->data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH;
-}
-
-static FLAC__StreamMetadata_SeekPoint *seekpoint_array_new_(unsigned num_points)
-{
- FLAC__StreamMetadata_SeekPoint *object_array;
-
- FLAC__ASSERT(num_points > 0);
-
- object_array = (FLAC__StreamMetadata_SeekPoint*)safe_malloc_mul_2op_(num_points, /*times*/sizeof(FLAC__StreamMetadata_SeekPoint));
-
- if(0 != object_array) {
- unsigned i;
- for(i = 0; i < num_points; i++) {
- object_array[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
- object_array[i].stream_offset = 0;
- object_array[i].frame_samples = 0;
- }
- }
-
- return object_array;
-}
-
-static void vorbiscomment_calculate_length_(FLAC__StreamMetadata *object)
-{
- unsigned i;
-
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
-
- object->length = (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN) / 8;
- object->length += object->data.vorbis_comment.vendor_string.length;
- object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN) / 8;
- for(i = 0; i < object->data.vorbis_comment.num_comments; i++) {
- object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8);
- object->length += object->data.vorbis_comment.comments[i].length;
- }
-}
-
-static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_new_(unsigned num_comments)
-{
- FLAC__ASSERT(num_comments > 0);
-
- return (FLAC__StreamMetadata_VorbisComment_Entry*)safe_calloc_(num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry));
-}
-
-static void vorbiscomment_entry_array_delete_(FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments)
-{
- unsigned i;
-
- FLAC__ASSERT(0 != object_array && num_comments > 0);
-
- for(i = 0; i < num_comments; i++)
- if(0 != object_array[i].entry)
- free(object_array[i].entry);
-
- if(0 != object_array)
- free(object_array);
-}
-
-static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_copy_(const FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments)
-{
- FLAC__StreamMetadata_VorbisComment_Entry *return_array;
-
- FLAC__ASSERT(0 != object_array);
- FLAC__ASSERT(num_comments > 0);
-
- return_array = vorbiscomment_entry_array_new_(num_comments);
-
- if(0 != return_array) {
- unsigned i;
-
- for(i = 0; i < num_comments; i++) {
- if(!copy_vcentry_(return_array+i, object_array+i)) {
- vorbiscomment_entry_array_delete_(return_array, num_comments);
- return 0;
- }
- }
- }
-
- return return_array;
-}
-
-static FLAC__bool vorbiscomment_set_entry_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry *dest, const FLAC__StreamMetadata_VorbisComment_Entry *src, FLAC__bool copy)
-{
- FLAC__byte *save;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(0 != dest);
- FLAC__ASSERT(0 != src);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
- FLAC__ASSERT((0 != src->entry && src->length > 0) || (0 == src->entry && src->length == 0));
-
- save = dest->entry;
-
- if(0 != src->entry && src->length > 0) {
- if(copy) {
- /* do the copy first so that if we fail we leave the dest object untouched */
- if(!copy_vcentry_(dest, src))
- return false;
- }
- else {
- /* we have to make sure that the string we're taking over is null-terminated */
-
- /*
- * Stripping the const from src->entry is OK since we're taking
- * ownership of the pointer. This is a hack around a deficiency
- * in the API where the same function is used for 'copy' and
- * 'own', but the source entry is a const pointer. If we were
- * precise, the 'own' flavor would be a separate function with a
- * non-const source pointer. But it's not, so we hack away.
- */
- if(!ensure_null_terminated_((FLAC__byte**)(&src->entry), src->length))
- return false;
- *dest = *src;
- }
- }
- else {
- /* the src is null */
- *dest = *src;
- }
-
- if(0 != save)
- free(save);
-
- vorbiscomment_calculate_length_(object);
- return true;
-}
-
-static int vorbiscomment_find_entry_from_(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name, unsigned field_name_length)
-{
- unsigned i;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
- FLAC__ASSERT(0 != field_name);
-
- for(i = offset; i < object->data.vorbis_comment.num_comments; i++) {
- if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length))
- return (int)i;
- }
-
- return -1;
-}
-
-static void cuesheet_calculate_length_(FLAC__StreamMetadata *object)
-{
- unsigned i;
-
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
-
- object->length = (
- FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN +
- FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN +
- FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN +
- FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN +
- FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN
- ) / 8;
-
- object->length += object->data.cue_sheet.num_tracks * (
- FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN +
- FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN +
- FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN +
- FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN +
- FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN +
- FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN +
- FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN
- ) / 8;
-
- for(i = 0; i < object->data.cue_sheet.num_tracks; i++) {
- object->length += object->data.cue_sheet.tracks[i].num_indices * (
- FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN +
- FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN +
- FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN
- ) / 8;
- }
-}
-
-static FLAC__StreamMetadata_CueSheet_Index *cuesheet_track_index_array_new_(unsigned num_indices)
-{
- FLAC__ASSERT(num_indices > 0);
-
- return (FLAC__StreamMetadata_CueSheet_Index*)safe_calloc_(num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index));
-}
-
-static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_new_(unsigned num_tracks)
-{
- FLAC__ASSERT(num_tracks > 0);
-
- return (FLAC__StreamMetadata_CueSheet_Track*)safe_calloc_(num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track));
-}
-
-static void cuesheet_track_array_delete_(FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks)
-{
- unsigned i;
-
- FLAC__ASSERT(0 != object_array && num_tracks > 0);
-
- for(i = 0; i < num_tracks; i++) {
- if(0 != object_array[i].indices) {
- FLAC__ASSERT(object_array[i].num_indices > 0);
- free(object_array[i].indices);
- }
- }
-
- if(0 != object_array)
- free(object_array);
-}
-
-static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_copy_(const FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks)
-{
- FLAC__StreamMetadata_CueSheet_Track *return_array;
-
- FLAC__ASSERT(0 != object_array);
- FLAC__ASSERT(num_tracks > 0);
-
- return_array = cuesheet_track_array_new_(num_tracks);
-
- if(0 != return_array) {
- unsigned i;
-
- for(i = 0; i < num_tracks; i++) {
- if(!copy_track_(return_array+i, object_array+i)) {
- cuesheet_track_array_delete_(return_array, num_tracks);
- return 0;
- }
- }
- }
-
- return return_array;
-}
-
-static FLAC__bool cuesheet_set_track_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_CueSheet_Track *dest, const FLAC__StreamMetadata_CueSheet_Track *src, FLAC__bool copy)
-{
- FLAC__StreamMetadata_CueSheet_Index *save;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(0 != dest);
- FLAC__ASSERT(0 != src);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
- FLAC__ASSERT((0 != src->indices && src->num_indices > 0) || (0 == src->indices && src->num_indices == 0));
-
- save = dest->indices;
-
- /* do the copy first so that if we fail we leave the object untouched */
- if(copy) {
- if(!copy_track_(dest, src))
- return false;
- }
- else {
- *dest = *src;
- }
-
- if(0 != save)
- free(save);
-
- cuesheet_calculate_length_(object);
- return true;
-}
-
-
-/****************************************************************************
- *
- * Metadata object routines
- *
- ***************************************************************************/
-
-FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_new(FLAC__MetadataType type)
-{
- FLAC__StreamMetadata *object;
-
- if(type > FLAC__MAX_METADATA_TYPE_CODE)
- return 0;
-
- object = (FLAC__StreamMetadata*)calloc(1, sizeof(FLAC__StreamMetadata));
- if(0 != object) {
- object->is_last = false;
- object->type = type;
- switch(type) {
- case FLAC__METADATA_TYPE_STREAMINFO:
- object->length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
- break;
- case FLAC__METADATA_TYPE_PADDING:
- /* calloc() took care of this for us:
- object->length = 0;
- */
- break;
- case FLAC__METADATA_TYPE_APPLICATION:
- object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8;
- /* calloc() took care of this for us:
- object->data.application.data = 0;
- */
- break;
- case FLAC__METADATA_TYPE_SEEKTABLE:
- /* calloc() took care of this for us:
- object->length = 0;
- object->data.seek_table.num_points = 0;
- object->data.seek_table.points = 0;
- */
- break;
- case FLAC__METADATA_TYPE_VORBIS_COMMENT:
- object->data.vorbis_comment.vendor_string.length = (unsigned)strlen(FLAC__VENDOR_STRING);
- if(!copy_bytes_(&object->data.vorbis_comment.vendor_string.entry, (const FLAC__byte*)FLAC__VENDOR_STRING, object->data.vorbis_comment.vendor_string.length+1)) {
- free(object);
- return 0;
- }
- vorbiscomment_calculate_length_(object);
- break;
- case FLAC__METADATA_TYPE_CUESHEET:
- cuesheet_calculate_length_(object);
- break;
- case FLAC__METADATA_TYPE_PICTURE:
- object->length = (
- FLAC__STREAM_METADATA_PICTURE_TYPE_LEN +
- FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN + /* empty mime_type string */
- FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN + /* empty description string */
- FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN +
- FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN +
- FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN +
- FLAC__STREAM_METADATA_PICTURE_COLORS_LEN +
- FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN +
- 0 /* no data */
- ) / 8;
- object->data.picture.type = FLAC__STREAM_METADATA_PICTURE_TYPE_OTHER;
- object->data.picture.mime_type = 0;
- object->data.picture.description = 0;
- /* calloc() took care of this for us:
- object->data.picture.width = 0;
- object->data.picture.height = 0;
- object->data.picture.depth = 0;
- object->data.picture.colors = 0;
- object->data.picture.data_length = 0;
- object->data.picture.data = 0;
- */
- /* now initialize mime_type and description with empty strings to make things easier on the client */
- if(!copy_cstring_(&object->data.picture.mime_type, "")) {
- free(object);
- return 0;
- }
- if(!copy_cstring_((char**)(&object->data.picture.description), "")) {
- if(object->data.picture.mime_type)
- free(object->data.picture.mime_type);
- free(object);
- return 0;
- }
- break;
- default:
- /* calloc() took care of this for us:
- object->length = 0;
- object->data.unknown.data = 0;
- */
- break;
- }
- }
-
- return object;
-}
-
-FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_clone(const FLAC__StreamMetadata *object)
-{
- FLAC__StreamMetadata *to;
-
- FLAC__ASSERT(0 != object);
-
- if(0 != (to = FLAC__metadata_object_new(object->type))) {
- to->is_last = object->is_last;
- to->type = object->type;
- to->length = object->length;
- switch(to->type) {
- case FLAC__METADATA_TYPE_STREAMINFO:
- memcpy(&to->data.stream_info, &object->data.stream_info, sizeof(FLAC__StreamMetadata_StreamInfo));
- break;
- case FLAC__METADATA_TYPE_PADDING:
- break;
- case FLAC__METADATA_TYPE_APPLICATION:
- if(to->length < FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8) { /* underflow check */
- FLAC__metadata_object_delete(to);
- return 0;
- }
- memcpy(&to->data.application.id, &object->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8);
- if(!copy_bytes_(&to->data.application.data, object->data.application.data, object->length - FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- break;
- case FLAC__METADATA_TYPE_SEEKTABLE:
- to->data.seek_table.num_points = object->data.seek_table.num_points;
- if(to->data.seek_table.num_points > SIZE_MAX / sizeof(FLAC__StreamMetadata_SeekPoint)) { /* overflow check */
- FLAC__metadata_object_delete(to);
- return 0;
- }
- 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))) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- break;
- case FLAC__METADATA_TYPE_VORBIS_COMMENT:
- if(0 != to->data.vorbis_comment.vendor_string.entry) {
- free(to->data.vorbis_comment.vendor_string.entry);
- to->data.vorbis_comment.vendor_string.entry = 0;
- }
- if(!copy_vcentry_(&to->data.vorbis_comment.vendor_string, &object->data.vorbis_comment.vendor_string)) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- if(object->data.vorbis_comment.num_comments == 0) {
- FLAC__ASSERT(0 == object->data.vorbis_comment.comments);
- to->data.vorbis_comment.comments = 0;
- }
- else {
- FLAC__ASSERT(0 != object->data.vorbis_comment.comments);
- to->data.vorbis_comment.comments = vorbiscomment_entry_array_copy_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments);
- if(0 == to->data.vorbis_comment.comments) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- }
- to->data.vorbis_comment.num_comments = object->data.vorbis_comment.num_comments;
- break;
- case FLAC__METADATA_TYPE_CUESHEET:
- memcpy(&to->data.cue_sheet, &object->data.cue_sheet, sizeof(FLAC__StreamMetadata_CueSheet));
- if(object->data.cue_sheet.num_tracks == 0) {
- FLAC__ASSERT(0 == object->data.cue_sheet.tracks);
- }
- else {
- FLAC__ASSERT(0 != object->data.cue_sheet.tracks);
- to->data.cue_sheet.tracks = cuesheet_track_array_copy_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks);
- if(0 == to->data.cue_sheet.tracks) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- }
- break;
- case FLAC__METADATA_TYPE_PICTURE:
- to->data.picture.type = object->data.picture.type;
- if(!copy_cstring_(&to->data.picture.mime_type, object->data.picture.mime_type)) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- if(!copy_cstring_((char**)(&to->data.picture.description), (const char*)object->data.picture.description)) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- to->data.picture.width = object->data.picture.width;
- to->data.picture.height = object->data.picture.height;
- to->data.picture.depth = object->data.picture.depth;
- to->data.picture.colors = object->data.picture.colors;
- to->data.picture.data_length = object->data.picture.data_length;
- if(!copy_bytes_((&to->data.picture.data), object->data.picture.data, object->data.picture.data_length)) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- break;
- default:
- if(!copy_bytes_(&to->data.unknown.data, object->data.unknown.data, object->length)) {
- FLAC__metadata_object_delete(to);
- return 0;
- }
- break;
- }
- }
-
- return to;
-}
-
-void FLAC__metadata_object_delete_data(FLAC__StreamMetadata *object)
-{
- FLAC__ASSERT(0 != object);
-
- switch(object->type) {
- case FLAC__METADATA_TYPE_STREAMINFO:
- case FLAC__METADATA_TYPE_PADDING:
- break;
- case FLAC__METADATA_TYPE_APPLICATION:
- if(0 != object->data.application.data) {
- free(object->data.application.data);
- object->data.application.data = 0;
- }
- break;
- case FLAC__METADATA_TYPE_SEEKTABLE:
- if(0 != object->data.seek_table.points) {
- free(object->data.seek_table.points);
- object->data.seek_table.points = 0;
- }
- break;
- case FLAC__METADATA_TYPE_VORBIS_COMMENT:
- if(0 != object->data.vorbis_comment.vendor_string.entry) {
- free(object->data.vorbis_comment.vendor_string.entry);
- object->data.vorbis_comment.vendor_string.entry = 0;
- }
- if(0 != object->data.vorbis_comment.comments) {
- FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0);
- vorbiscomment_entry_array_delete_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments);
- }
- break;
- case FLAC__METADATA_TYPE_CUESHEET:
- if(0 != object->data.cue_sheet.tracks) {
- FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0);
- cuesheet_track_array_delete_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks);
- }
- break;
- case FLAC__METADATA_TYPE_PICTURE:
- if(0 != object->data.picture.mime_type) {
- free(object->data.picture.mime_type);
- object->data.picture.mime_type = 0;
- }
- if(0 != object->data.picture.description) {
- free(object->data.picture.description);
- object->data.picture.description = 0;
- }
- if(0 != object->data.picture.data) {
- free(object->data.picture.data);
- object->data.picture.data = 0;
- }
- break;
- default:
- if(0 != object->data.unknown.data) {
- free(object->data.unknown.data);
- object->data.unknown.data = 0;
- }
- break;
- }
-}
-
-FLAC_API void FLAC__metadata_object_delete(FLAC__StreamMetadata *object)
-{
- FLAC__metadata_object_delete_data(object);
- free(object);
-}
-
-static FLAC__bool compare_block_data_streaminfo_(const FLAC__StreamMetadata_StreamInfo *block1, const FLAC__StreamMetadata_StreamInfo *block2)
-{
- if(block1->min_blocksize != block2->min_blocksize)
- return false;
- if(block1->max_blocksize != block2->max_blocksize)
- return false;
- if(block1->min_framesize != block2->min_framesize)
- return false;
- if(block1->max_framesize != block2->max_framesize)
- return false;
- if(block1->sample_rate != block2->sample_rate)
- return false;
- if(block1->channels != block2->channels)
- return false;
- if(block1->bits_per_sample != block2->bits_per_sample)
- return false;
- if(block1->total_samples != block2->total_samples)
- return false;
- if(0 != memcmp(block1->md5sum, block2->md5sum, 16))
- return false;
- return true;
-}
-
-static FLAC__bool compare_block_data_application_(const FLAC__StreamMetadata_Application *block1, const FLAC__StreamMetadata_Application *block2, unsigned block_length)
-{
- FLAC__ASSERT(0 != block1);
- FLAC__ASSERT(0 != block2);
- FLAC__ASSERT(block_length >= sizeof(block1->id));
-
- if(0 != memcmp(block1->id, block2->id, sizeof(block1->id)))
- return false;
- if(0 != block1->data && 0 != block2->data)
- return 0 == memcmp(block1->data, block2->data, block_length - sizeof(block1->id));
- else
- return block1->data == block2->data;
-}
-
-static FLAC__bool compare_block_data_seektable_(const FLAC__StreamMetadata_SeekTable *block1, const FLAC__StreamMetadata_SeekTable *block2)
-{
- unsigned i;
-
- FLAC__ASSERT(0 != block1);
- FLAC__ASSERT(0 != block2);
-
- if(block1->num_points != block2->num_points)
- return false;
-
- if(0 != block1->points && 0 != block2->points) {
- for(i = 0; i < block1->num_points; i++) {
- if(block1->points[i].sample_number != block2->points[i].sample_number)
- return false;
- if(block1->points[i].stream_offset != block2->points[i].stream_offset)
- return false;
- if(block1->points[i].frame_samples != block2->points[i].frame_samples)
- return false;
- }
- return true;
- }
- else
- return block1->points == block2->points;
-}
-
-static FLAC__bool compare_block_data_vorbiscomment_(const FLAC__StreamMetadata_VorbisComment *block1, const FLAC__StreamMetadata_VorbisComment *block2)
-{
- unsigned i;
-
- if(block1->vendor_string.length != block2->vendor_string.length)
- return false;
-
- if(0 != block1->vendor_string.entry && 0 != block2->vendor_string.entry) {
- if(0 != memcmp(block1->vendor_string.entry, block2->vendor_string.entry, block1->vendor_string.length))
- return false;
- }
- else if(block1->vendor_string.entry != block2->vendor_string.entry)
- return false;
-
- if(block1->num_comments != block2->num_comments)
- return false;
-
- for(i = 0; i < block1->num_comments; i++) {
- if(0 != block1->comments[i].entry && 0 != block2->comments[i].entry) {
- if(0 != memcmp(block1->comments[i].entry, block2->comments[i].entry, block1->comments[i].length))
- return false;
- }
- else if(block1->comments[i].entry != block2->comments[i].entry)
- return false;
- }
- return true;
-}
-
-static FLAC__bool compare_block_data_cuesheet_(const FLAC__StreamMetadata_CueSheet *block1, const FLAC__StreamMetadata_CueSheet *block2)
-{
- unsigned i, j;
-
- if(0 != strcmp(block1->media_catalog_number, block2->media_catalog_number))
- return false;
-
- if(block1->lead_in != block2->lead_in)
- return false;
-
- if(block1->is_cd != block2->is_cd)
- return false;
-
- if(block1->num_tracks != block2->num_tracks)
- return false;
-
- if(0 != block1->tracks && 0 != block2->tracks) {
- FLAC__ASSERT(block1->num_tracks > 0);
- for(i = 0; i < block1->num_tracks; i++) {
- if(block1->tracks[i].offset != block2->tracks[i].offset)
- return false;
- if(block1->tracks[i].number != block2->tracks[i].number)
- return false;
- if(0 != memcmp(block1->tracks[i].isrc, block2->tracks[i].isrc, sizeof(block1->tracks[i].isrc)))
- return false;
- if(block1->tracks[i].type != block2->tracks[i].type)
- return false;
- if(block1->tracks[i].pre_emphasis != block2->tracks[i].pre_emphasis)
- return false;
- if(block1->tracks[i].num_indices != block2->tracks[i].num_indices)
- return false;
- if(0 != block1->tracks[i].indices && 0 != block2->tracks[i].indices) {
- FLAC__ASSERT(block1->tracks[i].num_indices > 0);
- for(j = 0; j < block1->tracks[i].num_indices; j++) {
- if(block1->tracks[i].indices[j].offset != block2->tracks[i].indices[j].offset)
- return false;
- if(block1->tracks[i].indices[j].number != block2->tracks[i].indices[j].number)
- return false;
- }
- }
- else if(block1->tracks[i].indices != block2->tracks[i].indices)
- return false;
- }
- }
- else if(block1->tracks != block2->tracks)
- return false;
- return true;
-}
-
-static FLAC__bool compare_block_data_picture_(const FLAC__StreamMetadata_Picture *block1, const FLAC__StreamMetadata_Picture *block2)
-{
- if(block1->type != block2->type)
- return false;
- if(block1->mime_type != block2->mime_type && (0 == block1->mime_type || 0 == block2->mime_type || strcmp(block1->mime_type, block2->mime_type)))
- return false;
- if(block1->description != block2->description && (0 == block1->description || 0 == block2->description || strcmp((const char *)block1->description, (const char *)block2->description)))
- return false;
- if(block1->width != block2->width)
- return false;
- if(block1->height != block2->height)
- return false;
- if(block1->depth != block2->depth)
- return false;
- if(block1->colors != block2->colors)
- return false;
- if(block1->data_length != block2->data_length)
- return false;
- if(block1->data != block2->data && (0 == block1->data || 0 == block2->data || memcmp(block1->data, block2->data, block1->data_length)))
- return false;
- return true;
-}
-
-static FLAC__bool compare_block_data_unknown_(const FLAC__StreamMetadata_Unknown *block1, const FLAC__StreamMetadata_Unknown *block2, unsigned block_length)
-{
- FLAC__ASSERT(0 != block1);
- FLAC__ASSERT(0 != block2);
-
- if(0 != block1->data && 0 != block2->data)
- return 0 == memcmp(block1->data, block2->data, block_length);
- else
- return block1->data == block2->data;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_is_equal(const FLAC__StreamMetadata *block1, const FLAC__StreamMetadata *block2)
-{
- FLAC__ASSERT(0 != block1);
- FLAC__ASSERT(0 != block2);
-
- if(block1->type != block2->type) {
- return false;
- }
- if(block1->is_last != block2->is_last) {
- return false;
- }
- if(block1->length != block2->length) {
- return false;
- }
- switch(block1->type) {
- case FLAC__METADATA_TYPE_STREAMINFO:
- return compare_block_data_streaminfo_(&block1->data.stream_info, &block2->data.stream_info);
- case FLAC__METADATA_TYPE_PADDING:
- return true; /* we don't compare the padding guts */
- case FLAC__METADATA_TYPE_APPLICATION:
- return compare_block_data_application_(&block1->data.application, &block2->data.application, block1->length);
- case FLAC__METADATA_TYPE_SEEKTABLE:
- return compare_block_data_seektable_(&block1->data.seek_table, &block2->data.seek_table);
- case FLAC__METADATA_TYPE_VORBIS_COMMENT:
- return compare_block_data_vorbiscomment_(&block1->data.vorbis_comment, &block2->data.vorbis_comment);
- case FLAC__METADATA_TYPE_CUESHEET:
- return compare_block_data_cuesheet_(&block1->data.cue_sheet, &block2->data.cue_sheet);
- case FLAC__METADATA_TYPE_PICTURE:
- return compare_block_data_picture_(&block1->data.picture, &block2->data.picture);
- default:
- return compare_block_data_unknown_(&block1->data.unknown, &block2->data.unknown, block1->length);
- }
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_application_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, unsigned length, FLAC__bool copy)
-{
- FLAC__byte *save;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_APPLICATION);
- FLAC__ASSERT((0 != data && length > 0) || (0 == data && length == 0 && copy == false));
-
- save = object->data.application.data;
-
- /* do the copy first so that if we fail we leave the object untouched */
- if(copy) {
- if(!copy_bytes_(&object->data.application.data, data, length))
- return false;
- }
- else {
- object->data.application.data = data;
- }
-
- if(0 != save)
- free(save);
-
- object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8 + length;
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_resize_points(FLAC__StreamMetadata *object, unsigned new_num_points)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
-
- if(0 == object->data.seek_table.points) {
- FLAC__ASSERT(object->data.seek_table.num_points == 0);
- if(0 == new_num_points)
- return true;
- else if(0 == (object->data.seek_table.points = seekpoint_array_new_(new_num_points)))
- return false;
- }
- else {
- const size_t old_size = object->data.seek_table.num_points * sizeof(FLAC__StreamMetadata_SeekPoint);
- const size_t new_size = new_num_points * sizeof(FLAC__StreamMetadata_SeekPoint);
-
- /* overflow check */
- if((size_t)new_num_points > SIZE_MAX / sizeof(FLAC__StreamMetadata_SeekPoint))
- return false;
-
- FLAC__ASSERT(object->data.seek_table.num_points > 0);
-
- if(new_size == 0) {
- free(object->data.seek_table.points);
- object->data.seek_table.points = 0;
- }
- else if(0 == (object->data.seek_table.points = (FLAC__StreamMetadata_SeekPoint*)realloc(object->data.seek_table.points, new_size)))
- return false;
-
- /* if growing, set new elements to placeholders */
- if(new_size > old_size) {
- unsigned i;
- for(i = object->data.seek_table.num_points; i < new_num_points; i++) {
- object->data.seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
- object->data.seek_table.points[i].stream_offset = 0;
- object->data.seek_table.points[i].frame_samples = 0;
- }
- }
- }
-
- object->data.seek_table.num_points = new_num_points;
-
- seektable_calculate_length_(object);
- return true;
-}
-
-FLAC_API void FLAC__metadata_object_seektable_set_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
- FLAC__ASSERT(point_num < object->data.seek_table.num_points);
-
- object->data.seek_table.points[point_num] = point;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_insert_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point)
-{
- int i;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
- FLAC__ASSERT(point_num <= object->data.seek_table.num_points);
-
- if(!FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points+1))
- return false;
-
- /* move all points >= point_num forward one space */
- for(i = (int)object->data.seek_table.num_points-1; i > (int)point_num; i--)
- object->data.seek_table.points[i] = object->data.seek_table.points[i-1];
-
- FLAC__metadata_object_seektable_set_point(object, point_num, point);
- seektable_calculate_length_(object);
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_delete_point(FLAC__StreamMetadata *object, unsigned point_num)
-{
- unsigned i;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
- FLAC__ASSERT(point_num < object->data.seek_table.num_points);
-
- /* move all points > point_num backward one space */
- for(i = point_num; i < object->data.seek_table.num_points-1; i++)
- object->data.seek_table.points[i] = object->data.seek_table.points[i+1];
-
- return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points-1);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_is_legal(const FLAC__StreamMetadata *object)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
-
- return FLAC__format_seektable_is_legal(&object->data.seek_table);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_placeholders(FLAC__StreamMetadata *object, unsigned num)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
-
- if(num > 0)
- /* WATCHOUT: we rely on the fact that growing the array adds PLACEHOLDERS at the end */
- return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points + num);
- else
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_point(FLAC__StreamMetadata *object, FLAC__uint64 sample_number)
-{
- FLAC__StreamMetadata_SeekTable *seek_table;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
-
- seek_table = &object->data.seek_table;
-
- if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + 1))
- return false;
-
- seek_table->points[seek_table->num_points - 1].sample_number = sample_number;
- seek_table->points[seek_table->num_points - 1].stream_offset = 0;
- seek_table->points[seek_table->num_points - 1].frame_samples = 0;
-
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_points(FLAC__StreamMetadata *object, FLAC__uint64 sample_numbers[], unsigned num)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
- FLAC__ASSERT(0 != sample_numbers || num == 0);
-
- if(num > 0) {
- FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
- unsigned i, j;
-
- i = seek_table->num_points;
-
- if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num))
- return false;
-
- for(j = 0; j < num; i++, j++) {
- seek_table->points[i].sample_number = sample_numbers[j];
- seek_table->points[i].stream_offset = 0;
- seek_table->points[i].frame_samples = 0;
- }
- }
-
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points(FLAC__StreamMetadata *object, unsigned num, FLAC__uint64 total_samples)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
- FLAC__ASSERT(total_samples > 0);
-
- if(num > 0 && total_samples > 0) {
- FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
- unsigned i, j;
-
- i = seek_table->num_points;
-
- if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num))
- return false;
-
- for(j = 0; j < num; i++, j++) {
- seek_table->points[i].sample_number = total_samples * (FLAC__uint64)j / (FLAC__uint64)num;
- seek_table->points[i].stream_offset = 0;
- seek_table->points[i].frame_samples = 0;
- }
- }
-
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(FLAC__StreamMetadata *object, unsigned samples, FLAC__uint64 total_samples)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
- FLAC__ASSERT(samples > 0);
- FLAC__ASSERT(total_samples > 0);
-
- if(samples > 0 && total_samples > 0) {
- FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
- unsigned i, j;
- FLAC__uint64 num, sample;
-
- num = 1 + total_samples / samples; /* 1+ for the first sample at 0 */
- /* now account for the fact that we don't place a seekpoint at "total_samples" since samples are number from 0: */
- if(total_samples % samples == 0)
- num--;
-
- i = seek_table->num_points;
-
- if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + (unsigned)num))
- return false;
-
- sample = 0;
- for(j = 0; j < num; i++, j++, sample += samples) {
- seek_table->points[i].sample_number = sample;
- seek_table->points[i].stream_offset = 0;
- seek_table->points[i].frame_samples = 0;
- }
- }
-
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_sort(FLAC__StreamMetadata *object, FLAC__bool compact)
-{
- unsigned unique;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
-
- unique = FLAC__format_seektable_sort(&object->data.seek_table);
-
- return !compact || FLAC__metadata_object_seektable_resize_points(object, unique);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_vendor_string(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
-{
- if(!FLAC__format_vorbiscomment_entry_value_is_legal(entry.entry, entry.length))
- return false;
- return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.vendor_string, &entry, copy);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_resize_comments(FLAC__StreamMetadata *object, unsigned new_num_comments)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
-
- if(0 == object->data.vorbis_comment.comments) {
- FLAC__ASSERT(object->data.vorbis_comment.num_comments == 0);
- if(0 == new_num_comments)
- return true;
- else if(0 == (object->data.vorbis_comment.comments = vorbiscomment_entry_array_new_(new_num_comments)))
- return false;
- }
- else {
- const size_t old_size = object->data.vorbis_comment.num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry);
- const size_t new_size = new_num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry);
-
- /* overflow check */
- if((size_t)new_num_comments > SIZE_MAX / sizeof(FLAC__StreamMetadata_VorbisComment_Entry))
- return false;
-
- FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0);
-
- /* if shrinking, free the truncated entries */
- if(new_num_comments < object->data.vorbis_comment.num_comments) {
- unsigned i;
- for(i = new_num_comments; i < object->data.vorbis_comment.num_comments; i++)
- if(0 != object->data.vorbis_comment.comments[i].entry)
- free(object->data.vorbis_comment.comments[i].entry);
- }
-
- if(new_size == 0) {
- free(object->data.vorbis_comment.comments);
- object->data.vorbis_comment.comments = 0;
- }
- else if(0 == (object->data.vorbis_comment.comments = (FLAC__StreamMetadata_VorbisComment_Entry*)realloc(object->data.vorbis_comment.comments, new_size)))
- return false;
-
- /* if growing, zero all the length/pointers of new elements */
- if(new_size > old_size)
- memset(object->data.vorbis_comment.comments + object->data.vorbis_comment.num_comments, 0, new_size - old_size);
- }
-
- object->data.vorbis_comment.num_comments = new_num_comments;
-
- vorbiscomment_calculate_length_(object);
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments);
-
- if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length))
- return false;
- return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.comments[comment_num], &entry, copy);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_insert_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
-{
- FLAC__StreamMetadata_VorbisComment *vc;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
- FLAC__ASSERT(comment_num <= object->data.vorbis_comment.num_comments);
-
- if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length))
- return false;
-
- vc = &object->data.vorbis_comment;
-
- if(!FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments+1))
- return false;
-
- /* move all comments >= comment_num forward one space */
- memmove(&vc->comments[comment_num+1], &vc->comments[comment_num], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-1-comment_num));
- vc->comments[comment_num].length = 0;
- vc->comments[comment_num].entry = 0;
-
- return FLAC__metadata_object_vorbiscomment_set_comment(object, comment_num, entry, copy);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_append_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
- return FLAC__metadata_object_vorbiscomment_insert_comment(object, object->data.vorbis_comment.num_comments, entry, copy);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_replace_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool all, FLAC__bool copy)
-{
- FLAC__ASSERT(0 != entry.entry && entry.length > 0);
-
- if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length))
- return false;
-
- {
- int i;
- size_t field_name_length;
- const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length);
-
- FLAC__ASSERT(0 != eq);
-
- if(0 == eq)
- return false; /* double protection */
-
- field_name_length = eq-entry.entry;
-
- if((i = vorbiscomment_find_entry_from_(object, 0, (const char *)entry.entry, field_name_length)) >= 0) {
- unsigned index = (unsigned)i;
- if(!FLAC__metadata_object_vorbiscomment_set_comment(object, index, entry, copy))
- return false;
- if(all && (index+1 < object->data.vorbis_comment.num_comments)) {
- for(i = vorbiscomment_find_entry_from_(object, index+1, (const char *)entry.entry, field_name_length); i >= 0; ) {
- if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i))
- return false;
- if((unsigned)i < object->data.vorbis_comment.num_comments)
- i = vorbiscomment_find_entry_from_(object, (unsigned)i, (const char *)entry.entry, field_name_length);
- else
- i = -1;
- }
- }
- return true;
- }
- else
- return FLAC__metadata_object_vorbiscomment_append_comment(object, entry, copy);
- }
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_delete_comment(FLAC__StreamMetadata *object, unsigned comment_num)
-{
- FLAC__StreamMetadata_VorbisComment *vc;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
- FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments);
-
- vc = &object->data.vorbis_comment;
-
- /* free the comment at comment_num */
- if(0 != vc->comments[comment_num].entry)
- free(vc->comments[comment_num].entry);
-
- /* move all comments > comment_num backward one space */
- memmove(&vc->comments[comment_num], &vc->comments[comment_num+1], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-comment_num-1));
- vc->comments[vc->num_comments-1].length = 0;
- vc->comments[vc->num_comments-1].entry = 0;
-
- return FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments-1);
-}
-
-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)
-{
- FLAC__ASSERT(0 != entry);
- FLAC__ASSERT(0 != field_name);
- FLAC__ASSERT(0 != field_value);
-
- if(!FLAC__format_vorbiscomment_entry_name_is_legal(field_name))
- return false;
- if(!FLAC__format_vorbiscomment_entry_value_is_legal((const FLAC__byte *)field_value, (unsigned)(-1)))
- return false;
-
- {
- const size_t nn = strlen(field_name);
- const size_t nv = strlen(field_value);
- entry->length = nn + 1 /*=*/ + nv;
- if(0 == (entry->entry = (FLAC__byte*)safe_malloc_add_4op_(nn, /*+*/1, /*+*/nv, /*+*/1)))
- return false;
- memcpy(entry->entry, field_name, nn);
- entry->entry[nn] = '=';
- memcpy(entry->entry+nn+1, field_value, nv);
- entry->entry[entry->length] = '\0';
- }
-
- return true;
-}
-
-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)
-{
- FLAC__ASSERT(0 != entry.entry && entry.length > 0);
- FLAC__ASSERT(0 != field_name);
- FLAC__ASSERT(0 != field_value);
-
- if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length))
- return false;
-
- {
- const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length);
- const size_t nn = eq-entry.entry;
- const size_t nv = entry.length-nn-1; /* -1 for the '=' */
- FLAC__ASSERT(0 != eq);
- if(0 == eq)
- return false; /* double protection */
- if(0 == (*field_name = (char*)safe_malloc_add_2op_(nn, /*+*/1)))
- return false;
- if(0 == (*field_value = (char*)safe_malloc_add_2op_(nv, /*+*/1))) {
- free(*field_name);
- return false;
- }
- memcpy(*field_name, entry.entry, nn);
- memcpy(*field_value, entry.entry+nn+1, nv);
- (*field_name)[nn] = '\0';
- (*field_value)[nv] = '\0';
- }
-
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_matches(const FLAC__StreamMetadata_VorbisComment_Entry entry, const char *field_name, unsigned field_name_length)
-{
- FLAC__ASSERT(0 != entry.entry && entry.length > 0);
- {
- const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length);
-#if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__ || defined __EMX__
-#define FLAC__STRNCASECMP strnicmp
-#else
-#define FLAC__STRNCASECMP strncasecmp
-#endif
- return (0 != eq && (unsigned)(eq-entry.entry) == field_name_length && 0 == FLAC__STRNCASECMP(field_name, (const char *)entry.entry, field_name_length));
-#undef FLAC__STRNCASECMP
- }
-}
-
-FLAC_API int FLAC__metadata_object_vorbiscomment_find_entry_from(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name)
-{
- FLAC__ASSERT(0 != field_name);
-
- return vorbiscomment_find_entry_from_(object, offset, field_name, strlen(field_name));
-}
-
-FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entry_matching(FLAC__StreamMetadata *object, const char *field_name)
-{
- const unsigned field_name_length = strlen(field_name);
- unsigned i;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
-
- for(i = 0; i < object->data.vorbis_comment.num_comments; i++) {
- if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) {
- if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, i))
- return -1;
- else
- return 1;
- }
- }
-
- return 0;
-}
-
-FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entries_matching(FLAC__StreamMetadata *object, const char *field_name)
-{
- FLAC__bool ok = true;
- unsigned matching = 0;
- const unsigned field_name_length = strlen(field_name);
- int i;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
-
- /* must delete from end to start otherwise it will interfere with our iteration */
- for(i = (int)object->data.vorbis_comment.num_comments - 1; ok && i >= 0; i--) {
- if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) {
- matching++;
- ok &= FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i);
- }
- }
-
- return ok? (int)matching : -1;
-}
-
-FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_new(void)
-{
- return (FLAC__StreamMetadata_CueSheet_Track*)calloc(1, sizeof(FLAC__StreamMetadata_CueSheet_Track));
-}
-
-FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_clone(const FLAC__StreamMetadata_CueSheet_Track *object)
-{
- FLAC__StreamMetadata_CueSheet_Track *to;
-
- FLAC__ASSERT(0 != object);
-
- if(0 != (to = FLAC__metadata_object_cuesheet_track_new())) {
- if(!copy_track_(to, object)) {
- FLAC__metadata_object_cuesheet_track_delete(to);
- return 0;
- }
- }
-
- return to;
-}
-
-void FLAC__metadata_object_cuesheet_track_delete_data(FLAC__StreamMetadata_CueSheet_Track *object)
-{
- FLAC__ASSERT(0 != object);
-
- if(0 != object->indices) {
- FLAC__ASSERT(object->num_indices > 0);
- free(object->indices);
- }
-}
-
-FLAC_API void FLAC__metadata_object_cuesheet_track_delete(FLAC__StreamMetadata_CueSheet_Track *object)
-{
- FLAC__metadata_object_cuesheet_track_delete_data(object);
- free(object);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_resize_indices(FLAC__StreamMetadata *object, unsigned track_num, unsigned new_num_indices)
-{
- FLAC__StreamMetadata_CueSheet_Track *track;
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
- FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
-
- track = &object->data.cue_sheet.tracks[track_num];
-
- if(0 == track->indices) {
- FLAC__ASSERT(track->num_indices == 0);
- if(0 == new_num_indices)
- return true;
- else if(0 == (track->indices = cuesheet_track_index_array_new_(new_num_indices)))
- return false;
- }
- else {
- const size_t old_size = track->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index);
- const size_t new_size = new_num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index);
-
- /* overflow check */
- if((size_t)new_num_indices > SIZE_MAX / sizeof(FLAC__StreamMetadata_CueSheet_Index))
- return false;
-
- FLAC__ASSERT(track->num_indices > 0);
-
- if(new_size == 0) {
- free(track->indices);
- track->indices = 0;
- }
- else if(0 == (track->indices = (FLAC__StreamMetadata_CueSheet_Index*)realloc(track->indices, new_size)))
- return false;
-
- /* if growing, zero all the lengths/pointers of new elements */
- if(new_size > old_size)
- memset(track->indices + track->num_indices, 0, new_size - old_size);
- }
-
- track->num_indices = new_num_indices;
-
- cuesheet_calculate_length_(object);
- return true;
-}
-
-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)
-{
- FLAC__StreamMetadata_CueSheet_Track *track;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
- FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
- FLAC__ASSERT(index_num <= object->data.cue_sheet.tracks[track_num].num_indices);
-
- track = &object->data.cue_sheet.tracks[track_num];
-
- if(!FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices+1))
- return false;
-
- /* move all indices >= index_num forward one space */
- memmove(&track->indices[index_num+1], &track->indices[index_num], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-1-index_num));
-
- track->indices[index_num] = index;
- cuesheet_calculate_length_(object);
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_blank_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num)
-{
- FLAC__StreamMetadata_CueSheet_Index index;
- memset(&index, 0, sizeof(index));
- return FLAC__metadata_object_cuesheet_track_insert_index(object, track_num, index_num, index);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_delete_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num)
-{
- FLAC__StreamMetadata_CueSheet_Track *track;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
- FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
- FLAC__ASSERT(index_num < object->data.cue_sheet.tracks[track_num].num_indices);
-
- track = &object->data.cue_sheet.tracks[track_num];
-
- /* move all indices > index_num backward one space */
- memmove(&track->indices[index_num], &track->indices[index_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-index_num-1));
-
- FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices-1);
- cuesheet_calculate_length_(object);
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_resize_tracks(FLAC__StreamMetadata *object, unsigned new_num_tracks)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
-
- if(0 == object->data.cue_sheet.tracks) {
- FLAC__ASSERT(object->data.cue_sheet.num_tracks == 0);
- if(0 == new_num_tracks)
- return true;
- else if(0 == (object->data.cue_sheet.tracks = cuesheet_track_array_new_(new_num_tracks)))
- return false;
- }
- else {
- const size_t old_size = object->data.cue_sheet.num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track);
- const size_t new_size = new_num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track);
-
- /* overflow check */
- if((size_t)new_num_tracks > SIZE_MAX / sizeof(FLAC__StreamMetadata_CueSheet_Track))
- return false;
-
- FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0);
-
- /* if shrinking, free the truncated entries */
- if(new_num_tracks < object->data.cue_sheet.num_tracks) {
- unsigned i;
- for(i = new_num_tracks; i < object->data.cue_sheet.num_tracks; i++)
- if(0 != object->data.cue_sheet.tracks[i].indices)
- free(object->data.cue_sheet.tracks[i].indices);
- }
-
- if(new_size == 0) {
- free(object->data.cue_sheet.tracks);
- object->data.cue_sheet.tracks = 0;
- }
- else if(0 == (object->data.cue_sheet.tracks = (FLAC__StreamMetadata_CueSheet_Track*)realloc(object->data.cue_sheet.tracks, new_size)))
- return false;
-
- /* if growing, zero all the lengths/pointers of new elements */
- if(new_size > old_size)
- memset(object->data.cue_sheet.tracks + object->data.cue_sheet.num_tracks, 0, new_size - old_size);
- }
-
- object->data.cue_sheet.num_tracks = new_num_tracks;
-
- cuesheet_calculate_length_(object);
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_set_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
-
- return cuesheet_set_track_(object, object->data.cue_sheet.tracks + track_num, track, copy);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy)
-{
- FLAC__StreamMetadata_CueSheet *cs;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
- FLAC__ASSERT(track_num <= object->data.cue_sheet.num_tracks);
-
- cs = &object->data.cue_sheet;
-
- if(!FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks+1))
- return false;
-
- /* move all tracks >= track_num forward one space */
- memmove(&cs->tracks[track_num+1], &cs->tracks[track_num], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-1-track_num));
- cs->tracks[track_num].num_indices = 0;
- cs->tracks[track_num].indices = 0;
-
- return FLAC__metadata_object_cuesheet_set_track(object, track_num, track, copy);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_blank_track(FLAC__StreamMetadata *object, unsigned track_num)
-{
- FLAC__StreamMetadata_CueSheet_Track track;
- memset(&track, 0, sizeof(track));
- return FLAC__metadata_object_cuesheet_insert_track(object, track_num, &track, /*copy=*/false);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_delete_track(FLAC__StreamMetadata *object, unsigned track_num)
-{
- FLAC__StreamMetadata_CueSheet *cs;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
- FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks);
-
- cs = &object->data.cue_sheet;
-
- /* free the track at track_num */
- if(0 != cs->tracks[track_num].indices)
- free(cs->tracks[track_num].indices);
-
- /* move all tracks > track_num backward one space */
- memmove(&cs->tracks[track_num], &cs->tracks[track_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-track_num-1));
- cs->tracks[cs->num_tracks-1].num_indices = 0;
- cs->tracks[cs->num_tracks-1].indices = 0;
-
- return FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks-1);
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMetadata *object, FLAC__bool check_cd_da_subset, const char **violation)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
-
- return FLAC__format_cuesheet_is_legal(&object->data.cue_sheet, check_cd_da_subset, violation);
-}
-
-static FLAC__uint64 get_index_01_offset_(const FLAC__StreamMetadata_CueSheet *cs, unsigned track)
-{
- if (track >= (cs->num_tracks-1) || cs->tracks[track].num_indices < 1)
- return 0;
- else if (cs->tracks[track].indices[0].number == 1)
- return cs->tracks[track].indices[0].offset + cs->tracks[track].offset + cs->lead_in;
- else if (cs->tracks[track].num_indices < 2)
- return 0;
- else if (cs->tracks[track].indices[1].number == 1)
- return cs->tracks[track].indices[1].offset + cs->tracks[track].offset + cs->lead_in;
- else
- return 0;
-}
-
-static FLAC__uint32 cddb_add_digits_(FLAC__uint32 x)
-{
- FLAC__uint32 n = 0;
- while (x) {
- n += (x%10);
- x /= 10;
- }
- return n;
-}
-
-/*@@@@add to tests*/
-FLAC_API FLAC__uint32 FLAC__metadata_object_cuesheet_calculate_cddb_id(const FLAC__StreamMetadata *object)
-{
- const FLAC__StreamMetadata_CueSheet *cs;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
-
- cs = &object->data.cue_sheet;
-
- if (cs->num_tracks < 2) /* need at least one real track and the lead-out track */
- return 0;
-
- {
- FLAC__uint32 i, length, sum = 0;
- for (i = 0; i < (cs->num_tracks-1); i++) /* -1 to avoid counting the lead-out */
- sum += cddb_add_digits_((FLAC__uint32)(get_index_01_offset_(cs, i) / 44100));
- length = (FLAC__uint32)((cs->tracks[cs->num_tracks-1].offset+cs->lead_in) / 44100) - (FLAC__uint32)(get_index_01_offset_(cs, 0) / 44100);
-
- return (sum % 0xFF) << 24 | length << 8 | (FLAC__uint32)(cs->num_tracks-1);
- }
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_picture_set_mime_type(FLAC__StreamMetadata *object, char *mime_type, FLAC__bool copy)
-{
- char *old;
- size_t old_length, new_length;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
- FLAC__ASSERT(0 != mime_type);
-
- old = object->data.picture.mime_type;
- old_length = old? strlen(old) : 0;
- new_length = strlen(mime_type);
-
- /* do the copy first so that if we fail we leave the object untouched */
- if(copy) {
- if(new_length >= SIZE_MAX) /* overflow check */
- return false;
- if(!copy_bytes_((FLAC__byte**)(&object->data.picture.mime_type), (FLAC__byte*)mime_type, new_length+1))
- return false;
- }
- else {
- object->data.picture.mime_type = mime_type;
- }
-
- if(0 != old)
- free(old);
-
- object->length -= old_length;
- object->length += new_length;
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_picture_set_description(FLAC__StreamMetadata *object, FLAC__byte *description, FLAC__bool copy)
-{
- FLAC__byte *old;
- size_t old_length, new_length;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
- FLAC__ASSERT(0 != description);
-
- old = object->data.picture.description;
- old_length = old? strlen((const char *)old) : 0;
- new_length = strlen((const char *)description);
-
- /* do the copy first so that if we fail we leave the object untouched */
- if(copy) {
- if(new_length >= SIZE_MAX) /* overflow check */
- return false;
- if(!copy_bytes_(&object->data.picture.description, description, new_length+1))
- return false;
- }
- else {
- object->data.picture.description = description;
- }
-
- if(0 != old)
- free(old);
-
- object->length -= old_length;
- object->length += new_length;
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_picture_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, FLAC__uint32 length, FLAC__bool copy)
-{
- FLAC__byte *old;
-
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
- FLAC__ASSERT((0 != data && length > 0) || (0 == data && length == 0 && copy == false));
-
- old = object->data.picture.data;
-
- /* do the copy first so that if we fail we leave the object untouched */
- if(copy) {
- if(!copy_bytes_(&object->data.picture.data, data, length))
- return false;
- }
- else {
- object->data.picture.data = data;
- }
-
- if(0 != old)
- free(old);
-
- object->length -= object->data.picture.data_length;
- object->data.picture.data_length = length;
- object->length += length;
- return true;
-}
-
-FLAC_API FLAC__bool FLAC__metadata_object_picture_is_legal(const FLAC__StreamMetadata *object, const char **violation)
-{
- FLAC__ASSERT(0 != object);
- FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
-
- return FLAC__format_picture_is_legal(&object->data.picture, violation);
-}