diff options
Diffstat (limited to 'deps/flac-1.3.2/src/libFLAC/metadata_object.c')
| -rw-r--r-- | deps/flac-1.3.2/src/libFLAC/metadata_object.c | 1821 |
1 files changed, 0 insertions, 1821 deletions
diff --git a/deps/flac-1.3.2/src/libFLAC/metadata_object.c b/deps/flac-1.3.2/src/libFLAC/metadata_object.c deleted file mode 100644 index 9cb9501..0000000 --- a/deps/flac-1.3.2/src/libFLAC/metadata_object.c +++ /dev/null @@ -1,1821 +0,0 @@ -/* libFLAC - Free Lossless Audio Codec library - * Copyright (C) 2001-2009 Josh Coalson - * Copyright (C) 2011-2016 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 "FLAC/assert.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, unsigned 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, unsigned bytes) -{ - FLAC__byte *copy; - FLAC__ASSERT(to != NULL); - if (copy_bytes_(©, 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, unsigned length) -{ - FLAC__byte *x = safe_realloc_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); - to->entry = 0; - } - else { - FLAC__byte *x; - FLAC__ASSERT(from->length > 0); - 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_(unsigned 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) { - 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 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(object_array != NULL && num_comments > 0); - - 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, unsigned 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) { - 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(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, unsigned offset, const char *field_name, unsigned field_name_length) -{ - unsigned 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) -{ - 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 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 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(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, unsigned 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) { - 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(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 = (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), "")) { - 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) { - FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0); - 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, unsigned 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) -{ - unsigned 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) -{ - unsigned 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) -{ - unsigned 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, unsigned 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, unsigned 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, unsigned new_num_points) -{ - FLAC__ASSERT(object != NULL); - FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); - - 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 if ((object->data.seek_table.points = safe_realloc_(object->data.seek_table.points, new_size)) == NULL) - 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(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, unsigned 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, unsigned point_num) -{ - unsigned 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, unsigned 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[], unsigned 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; - 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(object != NULL); - 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(object != NULL); - 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--; - - /* 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 = total_samples / 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(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, unsigned 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 if ((object->data.vorbis_comment.comments = vorbiscomment_entry_array_new_(new_num_comments)) == NULL) - 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 (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) { - unsigned 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 { - FLAC__StreamMetadata_VorbisComment_Entry *oldptr = object->data.vorbis_comment.comments; - if ((object->data.vorbis_comment.comments = realloc(object->data.vorbis_comment.comments, new_size)) == NULL) { - vorbiscomment_entry_array_delete_(oldptr, object->data.vorbis_comment.num_comments); - object->data.vorbis_comment.num_comments = 0; - 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(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, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) -{ - 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); - - 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(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 && 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); - - 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) { - unsigned indx = (unsigned)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 = (unsigned)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, unsigned 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, (unsigned)(-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 && entry.length > 0); - 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, unsigned field_name_length) -{ - FLAC__ASSERT(entry.entry != NULL && entry.length > 0); - { - const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); - return (eq != NULL && (unsigned)(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, unsigned 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 unsigned field_name_length = strlen(field_name); - unsigned 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; - unsigned matching = 0; - const unsigned 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, (unsigned)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, unsigned track_num, unsigned 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 if ((track->indices = safe_realloc_(track->indices, new_size)) == NULL) - 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 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, unsigned track_num, unsigned 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, unsigned track_num, unsigned 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, unsigned 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) { - unsigned 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 if ((object->data.cue_sheet.tracks = safe_realloc_(object->data.cue_sheet.tracks, new_size)) == NULL) - 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(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, unsigned 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, 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(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, 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(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); -} |