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-rw-r--r--src/libFLAC/metadata_object.c2018
1 files changed, 2018 insertions, 0 deletions
diff --git a/src/libFLAC/metadata_object.c b/src/libFLAC/metadata_object.c
new file mode 100644
index 0000000..73e7607
--- /dev/null
+++ b/src/libFLAC/metadata_object.c
@@ -0,0 +1,2018 @@
+/* libFLAC - Free Lossless Audio Codec library
+ * Copyright (C) 2001-2009 Josh Coalson
+ * Copyright (C) 2011-2023 Xiph.Org Foundation
+ *
+ * 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 "private/memory.h"
+#include "private/stream_encoder_framing.h"
+
+#include "FLAC/assert.h"
+#include "FLAC/stream_decoder.h"
+#include "share/alloc.h"
+#include "share/compat.h"
+
+/* Alias the first (in share/alloc.h) to the second (in src/libFLAC/memory.c). */
+#define safe_malloc_mul_2op_ safe_malloc_mul_2op_p
+
+
+/****************************************************************************
+ *
+ * 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, uint32_t bytes)
+{
+ FLAC__ASSERT(to != NULL);
+ if (bytes > 0 && from != NULL) {
+ FLAC__byte *x;
+ if ((x = safe_malloc_(bytes)) == NULL)
+ return false;
+ memcpy(x, from, bytes);
+ *to = x;
+ }
+ else {
+ *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, uint32_t bytes)
+{
+ FLAC__byte *copy;
+ FLAC__ASSERT(to != NULL);
+ if (copy_bytes_(&copy, from, bytes)) {
+ 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, uint32_t length)
+{
+ FLAC__byte *x = safe_realloc_nofree_add_2op_(*entry, length, /*+*/1);
+ if (x != NULL) {
+ 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 != NULL);
+ if (copy) {
+ 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 (from->entry == 0) {
+ FLAC__ASSERT(from->length == 0);
+ if ((to->entry = safe_malloc_(1)) == NULL)
+ return false;
+ to->entry[0] = '\0';
+ }
+ else {
+ FLAC__byte *x;
+ if ((x = safe_malloc_add_2op_(from->length, /*+*/1)) == NULL)
+ 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 (from->indices == 0) {
+ FLAC__ASSERT(from->num_indices == 0);
+ }
+ else {
+ FLAC__StreamMetadata_CueSheet_Index *x;
+ FLAC__ASSERT(from->num_indices > 0);
+ if ((x = safe_malloc_mul_2op_p(from->num_indices, /*times*/sizeof(FLAC__StreamMetadata_CueSheet_Index))) == NULL)
+ 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(object != NULL);
+ 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_(uint32_t num_points)
+{
+ FLAC__StreamMetadata_SeekPoint *object_array;
+
+ FLAC__ASSERT(num_points > 0);
+
+ object_array = safe_malloc_mul_2op_p(num_points, /*times*/sizeof(FLAC__StreamMetadata_SeekPoint));
+
+ if (object_array != NULL) {
+ uint32_t 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)
+{
+ uint32_t 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_(uint32_t num_comments)
+{
+ FLAC__ASSERT(num_comments > 0);
+
+ return safe_calloc_(num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry));
+}
+
+static void vorbiscomment_entry_array_delete_(FLAC__StreamMetadata_VorbisComment_Entry *object_array, uint32_t num_comments)
+{
+ uint32_t i;
+
+ FLAC__ASSERT(object_array != NULL);
+
+ for (i = 0; i < num_comments; i++)
+ free(object_array[i].entry);
+
+ free(object_array);
+}
+
+static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_copy_(const FLAC__StreamMetadata_VorbisComment_Entry *object_array, uint32_t num_comments)
+{
+ FLAC__StreamMetadata_VorbisComment_Entry *return_array;
+
+ FLAC__ASSERT(object_array != NULL);
+ FLAC__ASSERT(num_comments > 0);
+
+ return_array = vorbiscomment_entry_array_new_(num_comments);
+
+ if (return_array != NULL) {
+ uint32_t 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(object != NULL);
+ FLAC__ASSERT(dest != NULL);
+ FLAC__ASSERT(src != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ FLAC__ASSERT((src->entry != NULL && src->length > 0) || (src->entry == NULL && src->length == 0));
+
+ save = dest->entry;
+
+ if (src->entry != NULL) {
+ 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;
+ }
+
+ free(save);
+
+ vorbiscomment_calculate_length_(object);
+ return true;
+}
+
+static int vorbiscomment_find_entry_from_(const FLAC__StreamMetadata *object, uint32_t offset, const char *field_name, uint32_t field_name_length)
+{
+ uint32_t i;
+
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ FLAC__ASSERT(field_name != NULL);
+
+ 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)
+{
+ uint32_t 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_(uint32_t num_indices)
+{
+ FLAC__ASSERT(num_indices > 0);
+
+ return safe_calloc_(num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index));
+}
+
+static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_new_(uint32_t num_tracks)
+{
+ FLAC__ASSERT(num_tracks > 0);
+
+ return safe_calloc_(num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track));
+}
+
+static void cuesheet_track_array_delete_(FLAC__StreamMetadata_CueSheet_Track *object_array, uint32_t num_tracks)
+{
+ uint32_t i;
+
+ FLAC__ASSERT(object_array != NULL && num_tracks > 0);
+
+ for (i = 0; i < num_tracks; i++) {
+ if (object_array[i].indices != 0) {
+ FLAC__ASSERT(object_array[i].num_indices > 0);
+ free(object_array[i].indices);
+ }
+ }
+
+ free(object_array);
+}
+
+static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_copy_(const FLAC__StreamMetadata_CueSheet_Track *object_array, uint32_t num_tracks)
+{
+ FLAC__StreamMetadata_CueSheet_Track *return_array;
+
+ FLAC__ASSERT(object_array != NULL);
+ FLAC__ASSERT(num_tracks > 0);
+
+ return_array = cuesheet_track_array_new_(num_tracks);
+
+ if (return_array != NULL) {
+ uint32_t 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(object != NULL);
+ FLAC__ASSERT(dest != NULL);
+ FLAC__ASSERT(src != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
+ FLAC__ASSERT((src->indices != NULL && src->num_indices > 0) || (src->indices == NULL && 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;
+ }
+
+ 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)
+ return 0;
+
+ object = calloc(1, sizeof(FLAC__StreamMetadata));
+ if (object != NULL) {
+ 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 = (uint32_t)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), "")) {
+ 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(object != NULL);
+
+ if ((to = FLAC__metadata_object_new(object->type)) != NULL) {
+ 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 > UINT32_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 (to->data.vorbis_comment.vendor_string.entry != NULL) {
+ 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) {
+ to->data.vorbis_comment.comments = 0;
+ }
+ else {
+ to->data.vorbis_comment.comments = vorbiscomment_entry_array_copy_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments);
+ if (to->data.vorbis_comment.comments == NULL) {
+ to->data.vorbis_comment.num_comments = 0;
+ 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(object->data.cue_sheet.tracks == NULL);
+ }
+ else {
+ FLAC__ASSERT(object->data.cue_sheet.tracks != 0);
+ to->data.cue_sheet.tracks = cuesheet_track_array_copy_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks);
+ if (to->data.cue_sheet.tracks == NULL) {
+ 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(object != NULL);
+
+ switch(object->type) {
+ case FLAC__METADATA_TYPE_STREAMINFO:
+ case FLAC__METADATA_TYPE_PADDING:
+ break;
+ case FLAC__METADATA_TYPE_APPLICATION:
+ if (object->data.application.data != NULL) {
+ free(object->data.application.data);
+ object->data.application.data = NULL;
+ }
+ break;
+ case FLAC__METADATA_TYPE_SEEKTABLE:
+ if (object->data.seek_table.points != NULL) {
+ free(object->data.seek_table.points);
+ object->data.seek_table.points = NULL;
+ }
+ break;
+ case FLAC__METADATA_TYPE_VORBIS_COMMENT:
+ if (object->data.vorbis_comment.vendor_string.entry != NULL) {
+ free(object->data.vorbis_comment.vendor_string.entry);
+ object->data.vorbis_comment.vendor_string.entry = 0;
+ }
+ if (object->data.vorbis_comment.comments != NULL) {
+ vorbiscomment_entry_array_delete_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments);
+ object->data.vorbis_comment.comments = NULL;
+ object->data.vorbis_comment.num_comments = 0;
+ }
+ break;
+ case FLAC__METADATA_TYPE_CUESHEET:
+ if (object->data.cue_sheet.tracks != NULL) {
+ FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0);
+ cuesheet_track_array_delete_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks);
+ object->data.cue_sheet.tracks = NULL;
+ object->data.cue_sheet.num_tracks = 0;
+ }
+ break;
+ case FLAC__METADATA_TYPE_PICTURE:
+ if (object->data.picture.mime_type != NULL) {
+ free(object->data.picture.mime_type);
+ object->data.picture.mime_type = NULL;
+ }
+ if (object->data.picture.description != NULL) {
+ free(object->data.picture.description);
+ object->data.picture.description = NULL;
+ }
+ if (object->data.picture.data != NULL) {
+ free(object->data.picture.data);
+ object->data.picture.data = NULL;
+ }
+ break;
+ default:
+ if (object->data.unknown.data != NULL) {
+ free(object->data.unknown.data);
+ object->data.unknown.data = NULL;
+ }
+ 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 (memcmp(block1->md5sum, block2->md5sum, 16) != 0)
+ return false;
+ return true;
+}
+
+static FLAC__bool compare_block_data_application_(const FLAC__StreamMetadata_Application *block1, const FLAC__StreamMetadata_Application *block2, uint32_t block_length)
+{
+ FLAC__ASSERT(block1 != NULL);
+ FLAC__ASSERT(block2 != NULL);
+ FLAC__ASSERT(block_length >= sizeof(block1->id));
+
+ if (memcmp(block1->id, block2->id, sizeof(block1->id)) != 0)
+ return false;
+ if (block1->data != NULL && block2->data != NULL)
+ return memcmp(block1->data, block2->data, block_length - sizeof(block1->id)) == 0;
+ else
+ return block1->data == block2->data;
+}
+
+static FLAC__bool compare_block_data_seektable_(const FLAC__StreamMetadata_SeekTable *block1, const FLAC__StreamMetadata_SeekTable *block2)
+{
+ uint32_t i;
+
+ FLAC__ASSERT(block1 != NULL);
+ FLAC__ASSERT(block2 != NULL);
+
+ if (block1->num_points != block2->num_points)
+ return false;
+
+ if (block1->points != NULL && block2->points != NULL) {
+ 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)
+{
+ uint32_t i;
+
+ if (block1->vendor_string.length != block2->vendor_string.length)
+ return false;
+
+ if (block1->vendor_string.entry != NULL && block2->vendor_string.entry != NULL) {
+ if (memcmp(block1->vendor_string.entry, block2->vendor_string.entry, block1->vendor_string.length) != 0)
+ 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 (block1->comments[i].entry != NULL && block2->comments[i].entry != NULL) {
+ if (memcmp(block1->comments[i].entry, block2->comments[i].entry, block1->comments[i].length) != 0)
+ 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)
+{
+ uint32_t i, j;
+
+ if (strcmp(block1->media_catalog_number, block2->media_catalog_number) != 0)
+ 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 (block1->tracks != NULL && block2->tracks != NULL) {
+ 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 (memcmp(block1->tracks[i].isrc, block2->tracks[i].isrc, sizeof(block1->tracks[i].isrc)) != 0)
+ 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 (block1->tracks[i].indices != NULL && block2->tracks[i].indices != NULL) {
+ 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 && (block1->mime_type == 0 || block2->mime_type == 0 || strcmp(block1->mime_type, block2->mime_type)))
+ return false;
+ if (block1->description != block2->description && (block1->description == 0 || block2->description == 0 || 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 && (block1->data == NULL || block2->data == NULL || 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, uint32_t block_length)
+{
+ FLAC__ASSERT(block1 != NULL);
+ FLAC__ASSERT(block2 != NULL);
+
+ if (block1->data != NULL && block2->data != NULL)
+ return memcmp(block1->data, block2->data, block_length) == 0;
+ 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(block1 != NULL);
+ FLAC__ASSERT(block2 != NULL);
+
+ 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, uint32_t length, FLAC__bool copy)
+{
+ FLAC__byte *save;
+
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_APPLICATION);
+ FLAC__ASSERT((data != NULL && length > 0) || (data == NULL && 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;
+ }
+
+ 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, uint32_t new_num_points)
+{
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
+
+ if((FLAC__uint64)(new_num_points) * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN))
+ return false;
+
+ if (object->data.seek_table.points == 0) {
+ FLAC__ASSERT(object->data.seek_table.num_points == 0);
+ if (new_num_points == 0)
+ return true;
+ else if ((object->data.seek_table.points = seekpoint_array_new_(new_num_points)) == 0)
+ 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 (new_num_points > UINT32_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 {
+ /* Leave object->data.seek_table.points untouched if realloc fails */
+ FLAC__StreamMetadata_SeekPoint *tmpptr;
+ if ((tmpptr = realloc(object->data.seek_table.points, new_size)) == NULL)
+ return false;
+ object->data.seek_table.points = tmpptr;
+ }
+
+ /* if growing, set new elements to placeholders */
+ if (new_size > old_size) {
+ uint32_t 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, uint32_t point_num, FLAC__StreamMetadata_SeekPoint point)
+{
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t point_num, FLAC__StreamMetadata_SeekPoint point)
+{
+ int i;
+
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t point_num)
+{
+ uint32_t i;
+
+ FLAC__ASSERT(object != NULL);
+ 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(object != NULL);
+ 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, uint32_t num)
+{
+ FLAC__ASSERT(object != NULL);
+ 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(object != NULL);
+ 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[], uint32_t num)
+{
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
+ FLAC__ASSERT(sample_numbers != 0 || num == 0);
+
+ if (num > 0) {
+ FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
+ uint32_t 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, uint32_t num, FLAC__uint64 total_samples)
+{
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
+
+ if (num > 0 && total_samples > 0) {
+ FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
+ uint32_t 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, uint32_t samples, FLAC__uint64 total_samples)
+{
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE);
+
+ if (samples > 0 && total_samples > 0) {
+ FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table;
+ uint32_t 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--;
+
+ /* Put a strict upper bound on the number of allowed seek points. */
+ if (num > 32768) {
+ /* Set the bound and recalculate samples accordingly. */
+ num = 32768;
+ samples = (uint32_t)(total_samples / num);
+ }
+
+ i = seek_table->num_points;
+
+ if (!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + (uint32_t)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)
+{
+ uint32_t unique;
+
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t new_num_comments)
+{
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+
+ if (object->data.vorbis_comment.comments == NULL) {
+ FLAC__ASSERT(object->data.vorbis_comment.num_comments == 0);
+ if (new_num_comments == 0)
+ return true;
+ else {
+ uint32_t i;
+ if ((object->data.vorbis_comment.comments = vorbiscomment_entry_array_new_(new_num_comments)) == NULL)
+ return false;
+ for (i = 0; i < new_num_comments; i++) {
+ object->data.vorbis_comment.comments[i].length = 0;
+ if ((object->data.vorbis_comment.comments[i].entry = safe_malloc_(1)) == NULL) {
+ object->data.vorbis_comment.num_comments = i+1;
+ return false;
+ }
+ object->data.vorbis_comment.comments[i].entry[0] = '\0';
+ }
+ }
+ }
+ 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 (new_num_comments > UINT32_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) {
+ uint32_t i;
+ for (i = new_num_comments; i < object->data.vorbis_comment.num_comments; i++)
+ if (object->data.vorbis_comment.comments[i].entry != NULL)
+ 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 {
+ /* Leave object->data.vorbis_comment.comments untouched if realloc fails */
+ FLAC__StreamMetadata_VorbisComment_Entry *tmpptr;
+ if ((tmpptr = realloc(object->data.vorbis_comment.comments, new_size)) == NULL)
+ return false;
+ object->data.vorbis_comment.comments = tmpptr;
+ }
+
+ /* if growing, zero all the length/pointers of new elements */
+ if (new_size > old_size) {
+ uint32_t i;
+ for (i = object->data.vorbis_comment.num_comments; i < new_num_comments; i++) {
+ object->data.vorbis_comment.comments[i].length = 0;
+ if ((object->data.vorbis_comment.comments[i].entry = safe_malloc_(1)) == NULL) {
+ object->data.vorbis_comment.num_comments = i+1;
+ return false;
+ }
+ object->data.vorbis_comment.comments[i].entry[0] = '\0';
+ }
+ }
+ }
+
+ 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, uint32_t comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
+{
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy)
+{
+ FLAC__StreamMetadata_VorbisComment *vc;
+ FLAC__StreamMetadata_VorbisComment_Entry temp;
+
+ FLAC__ASSERT(object != NULL);
+ 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 */
+ /* reuse newly added empty comment */
+ temp = vc->comments[vc->num_comments-1];
+ 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] = temp;
+
+ 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(object != NULL);
+ 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(entry.entry != NULL);
+
+ 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);
+
+ if (eq == NULL)
+ return false; /* double protection */
+
+ field_name_length = eq-entry.entry;
+
+ i = vorbiscomment_find_entry_from_(object, 0, (const char *)entry.entry, field_name_length);
+ if (i >= 0) {
+ uint32_t indx = (uint32_t)i;
+ if (!FLAC__metadata_object_vorbiscomment_set_comment(object, indx, entry, copy))
+ return false;
+ entry = object->data.vorbis_comment.comments[indx];
+ indx++; /* skip over replaced comment */
+ if (all && indx < object->data.vorbis_comment.num_comments) {
+ i = vorbiscomment_find_entry_from_(object, indx, (const char *)entry.entry, field_name_length);
+ while (i >= 0) {
+ indx = (uint32_t)i;
+ if (!FLAC__metadata_object_vorbiscomment_delete_comment(object, indx))
+ return false;
+ if (indx < object->data.vorbis_comment.num_comments)
+ i = vorbiscomment_find_entry_from_(object, indx, (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, uint32_t comment_num)
+{
+ FLAC__StreamMetadata_VorbisComment *vc;
+
+ FLAC__ASSERT(object != NULL);
+ 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 */
+ 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(entry != NULL);
+ FLAC__ASSERT(field_name != NULL);
+ FLAC__ASSERT(field_value != NULL);
+
+ 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, (uint32_t)(-1)))
+ return false;
+
+ {
+ const size_t nn = strlen(field_name);
+ const size_t nv = strlen(field_value);
+ entry->length = nn + 1 /*=*/ + nv;
+ if ((entry->entry = safe_malloc_add_4op_(nn, /*+*/1, /*+*/nv, /*+*/1)) == NULL)
+ 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(entry.entry != NULL);
+ FLAC__ASSERT(field_name != NULL);
+ FLAC__ASSERT(field_value != NULL);
+
+ 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 '=' */
+
+ if (eq == NULL)
+ return false; /* double protection */
+ if ((*field_name = safe_malloc_add_2op_(nn, /*+*/1)) == NULL)
+ return false;
+ if ((*field_value = safe_malloc_add_2op_(nv, /*+*/1)) == NULL) {
+ 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, uint32_t field_name_length)
+{
+ FLAC__ASSERT(entry.entry != NULL);
+ {
+ const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length);
+ return (eq != NULL && (uint32_t)(eq-entry.entry) == field_name_length && FLAC__STRNCASECMP(field_name, (const char *)entry.entry, field_name_length) == 0);
+ }
+}
+
+FLAC_API int FLAC__metadata_object_vorbiscomment_find_entry_from(const FLAC__StreamMetadata *object, uint32_t offset, const char *field_name)
+{
+ FLAC__ASSERT(field_name != NULL);
+
+ 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 uint32_t field_name_length = strlen(field_name);
+ uint32_t i;
+
+ FLAC__ASSERT(object != NULL);
+ 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;
+ uint32_t matching = 0;
+ const uint32_t field_name_length = strlen(field_name);
+ int i;
+
+ FLAC__ASSERT(object != NULL);
+ 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, (uint32_t)i);
+ }
+ }
+
+ return ok? (int)matching : -1;
+}
+
+FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_new(void)
+{
+ return 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(object != NULL);
+
+ if ((to = FLAC__metadata_object_cuesheet_track_new()) != NULL) {
+ 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(object != NULL);
+
+ if (object->indices != NULL) {
+ 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, uint32_t track_num, uint32_t new_num_indices)
+{
+ FLAC__StreamMetadata_CueSheet_Track *track;
+ FLAC__ASSERT(object != NULL);
+ 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 (track->indices == NULL) {
+ FLAC__ASSERT(track->num_indices == 0);
+ if (new_num_indices == 0)
+ return true;
+ else if ((track->indices = cuesheet_track_index_array_new_(new_num_indices)) == NULL)
+ 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 (new_num_indices > UINT32_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 {
+ /* Leave track->indices untouched if realloc fails */
+ FLAC__StreamMetadata_CueSheet_Index *tmpptr;
+ if ((tmpptr = realloc(track->indices, new_size)) == NULL)
+ return false;
+ track->indices = tmpptr;
+ }
+
+ /* 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, uint32_t track_num, uint32_t index_num, FLAC__StreamMetadata_CueSheet_Index indx)
+{
+ FLAC__StreamMetadata_CueSheet_Track *track;
+
+ FLAC__ASSERT(object != NULL);
+ 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] = indx;
+ cuesheet_calculate_length_(object);
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_blank_index(FLAC__StreamMetadata *object, uint32_t track_num, uint32_t index_num)
+{
+ FLAC__StreamMetadata_CueSheet_Index indx;
+ memset(&indx, 0, sizeof(indx));
+ return FLAC__metadata_object_cuesheet_track_insert_index(object, track_num, index_num, indx);
+}
+
+FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_delete_index(FLAC__StreamMetadata *object, uint32_t track_num, uint32_t index_num)
+{
+ FLAC__StreamMetadata_CueSheet_Track *track;
+
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t new_num_tracks)
+{
+ FLAC__ASSERT(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET);
+
+ if (object->data.cue_sheet.tracks == NULL) {
+ FLAC__ASSERT(object->data.cue_sheet.num_tracks == 0);
+ if (new_num_tracks == 0)
+ return true;
+ else if ((object->data.cue_sheet.tracks = cuesheet_track_array_new_(new_num_tracks)) == NULL)
+ 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 (new_num_tracks > UINT32_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) {
+ uint32_t i;
+ for (i = new_num_tracks; i < object->data.cue_sheet.num_tracks; i++)
+ 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 {
+ /* Leave object->data.cue_sheet.tracks untouched if realloc fails */
+ FLAC__StreamMetadata_CueSheet_Track *tmpptr;
+ if ((tmpptr = realloc(object->data.cue_sheet.tracks, new_size)) == NULL)
+ return false;
+ object->data.cue_sheet.tracks = tmpptr;
+ }
+
+ /* 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, uint32_t track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy)
+{
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy)
+{
+ FLAC__StreamMetadata_CueSheet *cs;
+
+ FLAC__ASSERT(object != NULL);
+ 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, uint32_t 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, uint32_t track_num)
+{
+ FLAC__StreamMetadata_CueSheet *cs;
+
+ FLAC__ASSERT(object != NULL);
+ 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 */
+ 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(object != NULL);
+ 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, uint32_t 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(object != NULL);
+ 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(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
+ FLAC__ASSERT(mime_type != NULL);
+
+ 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;
+ }
+
+ 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(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
+ FLAC__ASSERT(description != NULL);
+
+ 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;
+ }
+
+ 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(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
+ FLAC__ASSERT((data != NULL && length > 0) || (data == NULL && 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;
+ }
+
+ 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(object != NULL);
+ FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE);
+
+ return FLAC__format_picture_is_legal(&object->data.picture, violation);
+}
+
+FLAC_API FLAC__byte * FLAC__metadata_object_get_raw(const FLAC__StreamMetadata *object)
+{
+ FLAC__BitWriter *bw;
+ const FLAC__byte * buffer;
+ FLAC__byte * output;
+ size_t bytes;
+
+ FLAC__ASSERT(object != NULL);
+
+ if((bw = FLAC__bitwriter_new()) == NULL)
+ return 0;
+ if(!FLAC__bitwriter_init(bw)) {
+ FLAC__bitwriter_delete(bw);
+ return 0;
+ }
+ if(!FLAC__add_metadata_block(object, bw, false)) {
+ FLAC__bitwriter_delete(bw);
+ return 0;
+ }
+
+ if(!FLAC__bitwriter_get_buffer(bw, &buffer, &bytes)) {
+ FLAC__bitwriter_delete(bw);
+ return 0;
+ }
+
+ /* Extra check whether length of bitwriter agrees with length of metadata block */
+ if(bytes != (object->length+FLAC__STREAM_METADATA_HEADER_LENGTH)) {
+ FLAC__bitwriter_delete(bw);
+ return 0;
+ }
+
+ output = safe_malloc_(bytes);
+ if(output == 0) {
+ FLAC__bitwriter_delete(bw);
+ return 0;
+ }
+
+ memcpy(output,buffer,bytes);
+ FLAC__bitwriter_delete(bw);
+ return output;
+}
+
+/* The following callbacks are for FLAC__metadata_object_set_raw */
+
+static FLAC__StreamDecoderReadStatus read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte *buffer, size_t *bytes, void *client_data);
+static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
+static void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
+static void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
+
+typedef struct {
+ FLAC__StreamMetadata *object;
+ FLAC__bool got_error;
+ FLAC__byte *buffer;
+ FLAC__int32 length;
+ FLAC__int32 tell;
+} set_raw_client_data;
+
+FLAC_API FLAC__StreamMetadata * FLAC__metadata_object_set_raw(FLAC__byte *buffer, FLAC__uint32 length)
+{
+ set_raw_client_data cd;
+ FLAC__StreamDecoder * decoder;
+
+ cd.buffer = buffer;
+ cd.length = length;
+ cd.got_error = false;
+ cd.object = 0;
+ cd.tell = -4;
+
+ decoder = FLAC__stream_decoder_new();
+
+ if(0 == decoder)
+ return 0;
+
+ FLAC__stream_decoder_set_md5_checking(decoder, false);
+ FLAC__stream_decoder_set_metadata_respond_all(decoder);
+
+ if(FLAC__stream_decoder_init_stream(decoder, read_callback_, NULL, NULL, NULL, NULL, write_callback_, metadata_callback_, error_callback_, &cd) != FLAC__STREAM_DECODER_INIT_STATUS_OK || cd.got_error) {
+ (void)FLAC__stream_decoder_finish(decoder);
+ FLAC__stream_decoder_delete(decoder);
+ return 0;
+ }
+
+ if((!FLAC__stream_decoder_process_until_end_of_metadata(decoder) && FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_END_OF_STREAM) || cd.got_error) {
+ (void)FLAC__stream_decoder_finish(decoder);
+ FLAC__stream_decoder_delete(decoder);
+ if(0 != cd.object)
+ FLAC__metadata_object_delete(cd.object);
+ return 0;
+ }
+
+ (void)FLAC__stream_decoder_finish(decoder);
+ FLAC__stream_decoder_delete(decoder);
+
+ return cd.object;
+
+}
+
+FLAC__StreamDecoderReadStatus read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte *buffer, size_t *bytes, void *client_data)
+{
+ set_raw_client_data *cd = (set_raw_client_data *)client_data;
+ (void)decoder;
+
+ if(cd->tell == -4) {
+ if(*bytes < 4)
+ return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+ buffer[0] = 'f';
+ buffer[1] = 'L';
+ buffer[2] = 'a';
+ buffer[3] = 'C';
+ *bytes = 4;
+ cd->tell = 0;
+ return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+ }
+ else if(cd->tell < 0)
+ return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+ else if(cd->tell == cd->length) {
+ *bytes = 0;
+ return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+ }
+ else {
+ if((FLAC__int32)(*bytes) > (cd->length - cd->tell))
+ *bytes = cd->length - cd->tell;
+ memcpy(buffer, cd->buffer+cd->tell, *bytes);
+ cd->tell += *bytes;
+ return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+ }
+}
+
+FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+{
+ (void)decoder, (void)frame, (void)buffer, (void)client_data;
+
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+}
+
+void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
+{
+ set_raw_client_data *cd = (set_raw_client_data *)client_data;
+ (void)decoder;
+
+ /*
+ * we assume we only get here when the one metadata block we were
+ * looking for was passed to us
+ */
+ if(!cd->got_error && 0 == cd->object) {
+ if(0 == (cd->object = FLAC__metadata_object_clone(metadata)))
+ cd->got_error = true;
+ }
+}
+
+void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+ set_raw_client_data *cd = (set_raw_client_data *)client_data;
+ (void)decoder;
+
+ if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC)
+ cd->got_error = true;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 16:51:07 +0000