summaryrefslogtreecommitdiffstatshomepage
path: root/trunk/src/lib/libflac/libflac/metadata_object.c
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/src/lib/libflac/libflac/metadata_object.c')
-rw-r--r--trunk/src/lib/libflac/libflac/metadata_object.c1819
1 files changed, 1819 insertions, 0 deletions
diff --git a/trunk/src/lib/libflac/libflac/metadata_object.c b/trunk/src/lib/libflac/libflac/metadata_object.c
new file mode 100644
index 00000000000..f00e0d597f5
--- /dev/null
+++ b/trunk/src/lib/libflac/libflac/metadata_object.c
@@ -0,0 +1,1819 @@
+/* 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.
+ */
+
+#if 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);
+}