| /* libFLAC - Free Lossless Audio Codec library |
| * Copyright (C) 2001-2009 Josh Coalson |
| * Copyright (C) 2011-2014 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(0 != to); |
| if(bytes > 0 && 0 != from) { |
| FLAC__byte *x; |
| if(0 == (x = safe_malloc_(bytes))) |
| return false; |
| memcpy(x, from, bytes); |
| *to = x; |
| } |
| else { |
| FLAC__ASSERT(0 == from); |
| FLAC__ASSERT(bytes == 0); |
| *to = 0; |
| } |
| return true; |
| } |
| |
| #if 0 /* UNUSED */ |
| /* like copy_bytes_(), but free()s the original '*to' if the copy succeeds and the original '*to' is non-NULL */ |
| static FLAC__bool free_copy_bytes_(FLAC__byte **to, const FLAC__byte *from, unsigned bytes) |
| { |
| FLAC__byte *copy; |
| FLAC__ASSERT(0 != to); |
| if(copy_bytes_(©, 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(0 != x) { |
| x[length] = '\0'; |
| *entry = x; |
| return true; |
| } |
| else |
| return false; |
| } |
| |
| /* copies the NUL-terminated C-string 'from' to '*to', leaving '*to' |
| * unchanged if malloc fails, free()ing the original '*to' if it |
| * succeeds and the original '*to' was not NULL |
| */ |
| static FLAC__bool copy_cstring_(char **to, const char *from) |
| { |
| char *copy = strdup(from); |
| FLAC__ASSERT(to); |
| if(copy) { |
| free(*to); |
| *to = copy; |
| return true; |
| } |
| else |
| return false; |
| } |
| |
| static FLAC__bool copy_vcentry_(FLAC__StreamMetadata_VorbisComment_Entry *to, const FLAC__StreamMetadata_VorbisComment_Entry *from) |
| { |
| to->length = from->length; |
| if(0 == from->entry) { |
| FLAC__ASSERT(from->length == 0); |
| to->entry = 0; |
| } |
| else { |
| FLAC__byte *x; |
| FLAC__ASSERT(from->length > 0); |
| if(0 == (x = safe_malloc_add_2op_(from->length, /*+*/1))) |
| return false; |
| memcpy(x, from->entry, from->length); |
| x[from->length] = '\0'; |
| to->entry = x; |
| } |
| return true; |
| } |
| |
| static FLAC__bool copy_track_(FLAC__StreamMetadata_CueSheet_Track *to, const FLAC__StreamMetadata_CueSheet_Track *from) |
| { |
| memcpy(to, from, sizeof(FLAC__StreamMetadata_CueSheet_Track)); |
| if(0 == from->indices) { |
| FLAC__ASSERT(from->num_indices == 0); |
| } |
| else { |
| FLAC__StreamMetadata_CueSheet_Index *x; |
| FLAC__ASSERT(from->num_indices > 0); |
| if(0 == (x = safe_malloc_mul_2op_p(from->num_indices, /*times*/sizeof(FLAC__StreamMetadata_CueSheet_Index)))) |
| return false; |
| memcpy(x, from->indices, from->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index)); |
| to->indices = x; |
| } |
| return true; |
| } |
| |
| static void seektable_calculate_length_(FLAC__StreamMetadata *object) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| |
| object->length = object->data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH; |
| } |
| |
| static FLAC__StreamMetadata_SeekPoint *seekpoint_array_new_(unsigned num_points) |
| { |
| FLAC__StreamMetadata_SeekPoint *object_array; |
| |
| FLAC__ASSERT(num_points > 0); |
| |
| object_array = safe_malloc_mul_2op_p(num_points, /*times*/sizeof(FLAC__StreamMetadata_SeekPoint)); |
| |
| if(0 != object_array) { |
| unsigned i; |
| for(i = 0; i < num_points; i++) { |
| object_array[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER; |
| object_array[i].stream_offset = 0; |
| object_array[i].frame_samples = 0; |
| } |
| } |
| |
| return object_array; |
| } |
| |
| static void vorbiscomment_calculate_length_(FLAC__StreamMetadata *object) |
| { |
| unsigned i; |
| |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| |
| object->length = (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN) / 8; |
| object->length += object->data.vorbis_comment.vendor_string.length; |
| object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN) / 8; |
| for(i = 0; i < object->data.vorbis_comment.num_comments; i++) { |
| object->length += (FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8); |
| object->length += object->data.vorbis_comment.comments[i].length; |
| } |
| } |
| |
| static FLAC__StreamMetadata_VorbisComment_Entry *vorbiscomment_entry_array_new_(unsigned num_comments) |
| { |
| FLAC__ASSERT(num_comments > 0); |
| |
| return safe_calloc_(num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry)); |
| } |
| |
| static void vorbiscomment_entry_array_delete_(FLAC__StreamMetadata_VorbisComment_Entry *object_array, unsigned num_comments) |
| { |
| unsigned i; |
| |
| FLAC__ASSERT(0 != object_array && num_comments > 0); |
| |
| for(i = 0; i < num_comments; i++) |
| 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(0 != object_array); |
| FLAC__ASSERT(num_comments > 0); |
| |
| return_array = vorbiscomment_entry_array_new_(num_comments); |
| |
| if(0 != return_array) { |
| unsigned i; |
| |
| for(i = 0; i < num_comments; i++) { |
| if(!copy_vcentry_(return_array+i, object_array+i)) { |
| vorbiscomment_entry_array_delete_(return_array, num_comments); |
| return 0; |
| } |
| } |
| } |
| |
| return return_array; |
| } |
| |
| static FLAC__bool vorbiscomment_set_entry_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry *dest, const FLAC__StreamMetadata_VorbisComment_Entry *src, FLAC__bool copy) |
| { |
| FLAC__byte *save; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(0 != dest); |
| FLAC__ASSERT(0 != src); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| FLAC__ASSERT((0 != src->entry && src->length > 0) || (0 == src->entry && src->length == 0)); |
| |
| save = dest->entry; |
| |
| if(0 != src->entry) { |
| 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(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| FLAC__ASSERT(0 != field_name); |
| |
| for(i = offset; i < object->data.vorbis_comment.num_comments; i++) { |
| if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) |
| return (int)i; |
| } |
| |
| return -1; |
| } |
| |
| static void cuesheet_calculate_length_(FLAC__StreamMetadata *object) |
| { |
| unsigned i; |
| |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| |
| object->length = ( |
| FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN |
| ) / 8; |
| |
| object->length += object->data.cue_sheet.num_tracks * ( |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN |
| ) / 8; |
| |
| for(i = 0; i < object->data.cue_sheet.num_tracks; i++) { |
| object->length += object->data.cue_sheet.tracks[i].num_indices * ( |
| FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN + |
| FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN |
| ) / 8; |
| } |
| } |
| |
| static FLAC__StreamMetadata_CueSheet_Index *cuesheet_track_index_array_new_(unsigned num_indices) |
| { |
| FLAC__ASSERT(num_indices > 0); |
| |
| return 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(0 != object_array && num_tracks > 0); |
| |
| for(i = 0; i < num_tracks; i++) { |
| if(0 != object_array[i].indices) { |
| FLAC__ASSERT(object_array[i].num_indices > 0); |
| free(object_array[i].indices); |
| } |
| } |
| |
| free(object_array); |
| } |
| |
| static FLAC__StreamMetadata_CueSheet_Track *cuesheet_track_array_copy_(const FLAC__StreamMetadata_CueSheet_Track *object_array, unsigned num_tracks) |
| { |
| FLAC__StreamMetadata_CueSheet_Track *return_array; |
| |
| FLAC__ASSERT(0 != object_array); |
| FLAC__ASSERT(num_tracks > 0); |
| |
| return_array = cuesheet_track_array_new_(num_tracks); |
| |
| if(0 != return_array) { |
| unsigned i; |
| |
| for(i = 0; i < num_tracks; i++) { |
| if(!copy_track_(return_array+i, object_array+i)) { |
| cuesheet_track_array_delete_(return_array, num_tracks); |
| return 0; |
| } |
| } |
| } |
| |
| return return_array; |
| } |
| |
| static FLAC__bool cuesheet_set_track_(FLAC__StreamMetadata *object, FLAC__StreamMetadata_CueSheet_Track *dest, const FLAC__StreamMetadata_CueSheet_Track *src, FLAC__bool copy) |
| { |
| FLAC__StreamMetadata_CueSheet_Index *save; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(0 != dest); |
| FLAC__ASSERT(0 != src); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| FLAC__ASSERT((0 != src->indices && src->num_indices > 0) || (0 == src->indices && src->num_indices == 0)); |
| |
| save = dest->indices; |
| |
| /* do the copy first so that if we fail we leave the object untouched */ |
| if(copy) { |
| if(!copy_track_(dest, src)) |
| return false; |
| } |
| else { |
| *dest = *src; |
| } |
| |
| 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(0 != object) { |
| object->is_last = false; |
| object->type = type; |
| switch(type) { |
| case FLAC__METADATA_TYPE_STREAMINFO: |
| object->length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH; |
| break; |
| case FLAC__METADATA_TYPE_PADDING: |
| /* calloc() took care of this for us: |
| object->length = 0; |
| */ |
| break; |
| case FLAC__METADATA_TYPE_APPLICATION: |
| object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
| /* calloc() took care of this for us: |
| object->data.application.data = 0; |
| */ |
| break; |
| case FLAC__METADATA_TYPE_SEEKTABLE: |
| /* calloc() took care of this for us: |
| object->length = 0; |
| object->data.seek_table.num_points = 0; |
| object->data.seek_table.points = 0; |
| */ |
| break; |
| case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| object->data.vorbis_comment.vendor_string.length = (unsigned)strlen(FLAC__VENDOR_STRING); |
| if(!copy_bytes_(&object->data.vorbis_comment.vendor_string.entry, (const FLAC__byte*)FLAC__VENDOR_STRING, object->data.vorbis_comment.vendor_string.length+1)) { |
| free(object); |
| return 0; |
| } |
| vorbiscomment_calculate_length_(object); |
| break; |
| case FLAC__METADATA_TYPE_CUESHEET: |
| cuesheet_calculate_length_(object); |
| break; |
| case FLAC__METADATA_TYPE_PICTURE: |
| object->length = ( |
| FLAC__STREAM_METADATA_PICTURE_TYPE_LEN + |
| FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN + /* empty mime_type string */ |
| FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN + /* empty description string */ |
| FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN + |
| FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN + |
| FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN + |
| FLAC__STREAM_METADATA_PICTURE_COLORS_LEN + |
| FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN + |
| 0 /* no data */ |
| ) / 8; |
| object->data.picture.type = FLAC__STREAM_METADATA_PICTURE_TYPE_OTHER; |
| object->data.picture.mime_type = 0; |
| object->data.picture.description = 0; |
| /* calloc() took care of this for us: |
| object->data.picture.width = 0; |
| object->data.picture.height = 0; |
| object->data.picture.depth = 0; |
| object->data.picture.colors = 0; |
| object->data.picture.data_length = 0; |
| object->data.picture.data = 0; |
| */ |
| /* now initialize mime_type and description with empty strings to make things easier on the client */ |
| if(!copy_cstring_(&object->data.picture.mime_type, "")) { |
| free(object); |
| return 0; |
| } |
| if(!copy_cstring_((char**)(&object->data.picture.description), "")) { |
| free(object->data.picture.mime_type); |
| free(object); |
| return 0; |
| } |
| break; |
| default: |
| /* calloc() took care of this for us: |
| object->length = 0; |
| object->data.unknown.data = 0; |
| */ |
| break; |
| } |
| } |
| |
| return object; |
| } |
| |
| FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_clone(const FLAC__StreamMetadata *object) |
| { |
| FLAC__StreamMetadata *to; |
| |
| FLAC__ASSERT(0 != object); |
| |
| if(0 != (to = FLAC__metadata_object_new(object->type))) { |
| to->is_last = object->is_last; |
| to->type = object->type; |
| to->length = object->length; |
| switch(to->type) { |
| case FLAC__METADATA_TYPE_STREAMINFO: |
| memcpy(&to->data.stream_info, &object->data.stream_info, sizeof(FLAC__StreamMetadata_StreamInfo)); |
| break; |
| case FLAC__METADATA_TYPE_PADDING: |
| break; |
| case FLAC__METADATA_TYPE_APPLICATION: |
| if(to->length < FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8) { /* underflow check */ |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| memcpy(&to->data.application.id, &object->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8); |
| if(!copy_bytes_(&to->data.application.data, object->data.application.data, object->length - FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| break; |
| case FLAC__METADATA_TYPE_SEEKTABLE: |
| to->data.seek_table.num_points = object->data.seek_table.num_points; |
| if(to->data.seek_table.num_points > 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(0 != to->data.vorbis_comment.vendor_string.entry) { |
| free(to->data.vorbis_comment.vendor_string.entry); |
| to->data.vorbis_comment.vendor_string.entry = 0; |
| } |
| if(!copy_vcentry_(&to->data.vorbis_comment.vendor_string, &object->data.vorbis_comment.vendor_string)) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| if(object->data.vorbis_comment.num_comments == 0) { |
| to->data.vorbis_comment.comments = 0; |
| } |
| else { |
| FLAC__ASSERT(0 != object->data.vorbis_comment.comments); |
| to->data.vorbis_comment.comments = vorbiscomment_entry_array_copy_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments); |
| if(0 == to->data.vorbis_comment.comments) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| } |
| to->data.vorbis_comment.num_comments = object->data.vorbis_comment.num_comments; |
| break; |
| case FLAC__METADATA_TYPE_CUESHEET: |
| memcpy(&to->data.cue_sheet, &object->data.cue_sheet, sizeof(FLAC__StreamMetadata_CueSheet)); |
| if(object->data.cue_sheet.num_tracks == 0) { |
| FLAC__ASSERT(0 == object->data.cue_sheet.tracks); |
| } |
| else { |
| FLAC__ASSERT(0 != object->data.cue_sheet.tracks); |
| to->data.cue_sheet.tracks = cuesheet_track_array_copy_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks); |
| if(0 == to->data.cue_sheet.tracks) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| } |
| break; |
| case FLAC__METADATA_TYPE_PICTURE: |
| to->data.picture.type = object->data.picture.type; |
| if(!copy_cstring_(&to->data.picture.mime_type, object->data.picture.mime_type)) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| if(!copy_cstring_((char**)(&to->data.picture.description), (const char*)object->data.picture.description)) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| to->data.picture.width = object->data.picture.width; |
| to->data.picture.height = object->data.picture.height; |
| to->data.picture.depth = object->data.picture.depth; |
| to->data.picture.colors = object->data.picture.colors; |
| to->data.picture.data_length = object->data.picture.data_length; |
| if(!copy_bytes_((&to->data.picture.data), object->data.picture.data, object->data.picture.data_length)) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| break; |
| default: |
| if(!copy_bytes_(&to->data.unknown.data, object->data.unknown.data, object->length)) { |
| FLAC__metadata_object_delete(to); |
| return 0; |
| } |
| break; |
| } |
| } |
| |
| return to; |
| } |
| |
| void FLAC__metadata_object_delete_data(FLAC__StreamMetadata *object) |
| { |
| FLAC__ASSERT(0 != object); |
| |
| switch(object->type) { |
| case FLAC__METADATA_TYPE_STREAMINFO: |
| case FLAC__METADATA_TYPE_PADDING: |
| break; |
| case FLAC__METADATA_TYPE_APPLICATION: |
| if(0 != object->data.application.data) { |
| free(object->data.application.data); |
| object->data.application.data = 0; |
| } |
| break; |
| case FLAC__METADATA_TYPE_SEEKTABLE: |
| if(0 != object->data.seek_table.points) { |
| free(object->data.seek_table.points); |
| object->data.seek_table.points = 0; |
| } |
| break; |
| case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| if(0 != object->data.vorbis_comment.vendor_string.entry) { |
| free(object->data.vorbis_comment.vendor_string.entry); |
| object->data.vorbis_comment.vendor_string.entry = 0; |
| } |
| if(0 != object->data.vorbis_comment.comments) { |
| FLAC__ASSERT(object->data.vorbis_comment.num_comments > 0); |
| vorbiscomment_entry_array_delete_(object->data.vorbis_comment.comments, object->data.vorbis_comment.num_comments); |
| } |
| break; |
| case FLAC__METADATA_TYPE_CUESHEET: |
| if(0 != object->data.cue_sheet.tracks) { |
| FLAC__ASSERT(object->data.cue_sheet.num_tracks > 0); |
| cuesheet_track_array_delete_(object->data.cue_sheet.tracks, object->data.cue_sheet.num_tracks); |
| } |
| break; |
| case FLAC__METADATA_TYPE_PICTURE: |
| if(0 != object->data.picture.mime_type) { |
| free(object->data.picture.mime_type); |
| object->data.picture.mime_type = 0; |
| } |
| if(0 != object->data.picture.description) { |
| free(object->data.picture.description); |
| object->data.picture.description = 0; |
| } |
| if(0 != object->data.picture.data) { |
| free(object->data.picture.data); |
| object->data.picture.data = 0; |
| } |
| break; |
| default: |
| if(0 != object->data.unknown.data) { |
| free(object->data.unknown.data); |
| object->data.unknown.data = 0; |
| } |
| break; |
| } |
| } |
| |
| FLAC_API void FLAC__metadata_object_delete(FLAC__StreamMetadata *object) |
| { |
| FLAC__metadata_object_delete_data(object); |
| free(object); |
| } |
| |
| static FLAC__bool compare_block_data_streaminfo_(const FLAC__StreamMetadata_StreamInfo *block1, const FLAC__StreamMetadata_StreamInfo *block2) |
| { |
| if(block1->min_blocksize != block2->min_blocksize) |
| return false; |
| if(block1->max_blocksize != block2->max_blocksize) |
| return false; |
| if(block1->min_framesize != block2->min_framesize) |
| return false; |
| if(block1->max_framesize != block2->max_framesize) |
| return false; |
| if(block1->sample_rate != block2->sample_rate) |
| return false; |
| if(block1->channels != block2->channels) |
| return false; |
| if(block1->bits_per_sample != block2->bits_per_sample) |
| return false; |
| if(block1->total_samples != block2->total_samples) |
| return false; |
| if(0 != memcmp(block1->md5sum, block2->md5sum, 16)) |
| return false; |
| return true; |
| } |
| |
| static FLAC__bool compare_block_data_application_(const FLAC__StreamMetadata_Application *block1, const FLAC__StreamMetadata_Application *block2, unsigned block_length) |
| { |
| FLAC__ASSERT(0 != block1); |
| FLAC__ASSERT(0 != block2); |
| FLAC__ASSERT(block_length >= sizeof(block1->id)); |
| |
| if(0 != memcmp(block1->id, block2->id, sizeof(block1->id))) |
| return false; |
| if(0 != block1->data && 0 != block2->data) |
| return 0 == memcmp(block1->data, block2->data, block_length - sizeof(block1->id)); |
| else |
| return block1->data == block2->data; |
| } |
| |
| static FLAC__bool compare_block_data_seektable_(const FLAC__StreamMetadata_SeekTable *block1, const FLAC__StreamMetadata_SeekTable *block2) |
| { |
| unsigned i; |
| |
| FLAC__ASSERT(0 != block1); |
| FLAC__ASSERT(0 != block2); |
| |
| if(block1->num_points != block2->num_points) |
| return false; |
| |
| if(0 != block1->points && 0 != block2->points) { |
| for(i = 0; i < block1->num_points; i++) { |
| if(block1->points[i].sample_number != block2->points[i].sample_number) |
| return false; |
| if(block1->points[i].stream_offset != block2->points[i].stream_offset) |
| return false; |
| if(block1->points[i].frame_samples != block2->points[i].frame_samples) |
| return false; |
| } |
| return true; |
| } |
| else |
| return block1->points == block2->points; |
| } |
| |
| static FLAC__bool compare_block_data_vorbiscomment_(const FLAC__StreamMetadata_VorbisComment *block1, const FLAC__StreamMetadata_VorbisComment *block2) |
| { |
| unsigned i; |
| |
| if(block1->vendor_string.length != block2->vendor_string.length) |
| return false; |
| |
| if(0 != block1->vendor_string.entry && 0 != block2->vendor_string.entry) { |
| if(0 != memcmp(block1->vendor_string.entry, block2->vendor_string.entry, block1->vendor_string.length)) |
| return false; |
| } |
| else if(block1->vendor_string.entry != block2->vendor_string.entry) |
| return false; |
| |
| if(block1->num_comments != block2->num_comments) |
| return false; |
| |
| for(i = 0; i < block1->num_comments; i++) { |
| if(0 != block1->comments[i].entry && 0 != block2->comments[i].entry) { |
| if(0 != memcmp(block1->comments[i].entry, block2->comments[i].entry, block1->comments[i].length)) |
| return false; |
| } |
| else if(block1->comments[i].entry != block2->comments[i].entry) |
| return false; |
| } |
| return true; |
| } |
| |
| static FLAC__bool compare_block_data_cuesheet_(const FLAC__StreamMetadata_CueSheet *block1, const FLAC__StreamMetadata_CueSheet *block2) |
| { |
| unsigned i, j; |
| |
| if(0 != strcmp(block1->media_catalog_number, block2->media_catalog_number)) |
| return false; |
| |
| if(block1->lead_in != block2->lead_in) |
| return false; |
| |
| if(block1->is_cd != block2->is_cd) |
| return false; |
| |
| if(block1->num_tracks != block2->num_tracks) |
| return false; |
| |
| if(0 != block1->tracks && 0 != block2->tracks) { |
| FLAC__ASSERT(block1->num_tracks > 0); |
| for(i = 0; i < block1->num_tracks; i++) { |
| if(block1->tracks[i].offset != block2->tracks[i].offset) |
| return false; |
| if(block1->tracks[i].number != block2->tracks[i].number) |
| return false; |
| if(0 != memcmp(block1->tracks[i].isrc, block2->tracks[i].isrc, sizeof(block1->tracks[i].isrc))) |
| return false; |
| if(block1->tracks[i].type != block2->tracks[i].type) |
| return false; |
| if(block1->tracks[i].pre_emphasis != block2->tracks[i].pre_emphasis) |
| return false; |
| if(block1->tracks[i].num_indices != block2->tracks[i].num_indices) |
| return false; |
| if(0 != block1->tracks[i].indices && 0 != block2->tracks[i].indices) { |
| FLAC__ASSERT(block1->tracks[i].num_indices > 0); |
| for(j = 0; j < block1->tracks[i].num_indices; j++) { |
| if(block1->tracks[i].indices[j].offset != block2->tracks[i].indices[j].offset) |
| return false; |
| if(block1->tracks[i].indices[j].number != block2->tracks[i].indices[j].number) |
| return false; |
| } |
| } |
| else if(block1->tracks[i].indices != block2->tracks[i].indices) |
| return false; |
| } |
| } |
| else if(block1->tracks != block2->tracks) |
| return false; |
| return true; |
| } |
| |
| static FLAC__bool compare_block_data_picture_(const FLAC__StreamMetadata_Picture *block1, const FLAC__StreamMetadata_Picture *block2) |
| { |
| if(block1->type != block2->type) |
| return false; |
| if(block1->mime_type != block2->mime_type && (0 == block1->mime_type || 0 == block2->mime_type || strcmp(block1->mime_type, block2->mime_type))) |
| return false; |
| if(block1->description != block2->description && (0 == block1->description || 0 == block2->description || strcmp((const char *)block1->description, (const char *)block2->description))) |
| return false; |
| if(block1->width != block2->width) |
| return false; |
| if(block1->height != block2->height) |
| return false; |
| if(block1->depth != block2->depth) |
| return false; |
| if(block1->colors != block2->colors) |
| return false; |
| if(block1->data_length != block2->data_length) |
| return false; |
| if(block1->data != block2->data && (0 == block1->data || 0 == block2->data || memcmp(block1->data, block2->data, block1->data_length))) |
| return false; |
| return true; |
| } |
| |
| static FLAC__bool compare_block_data_unknown_(const FLAC__StreamMetadata_Unknown *block1, const FLAC__StreamMetadata_Unknown *block2, unsigned block_length) |
| { |
| FLAC__ASSERT(0 != block1); |
| FLAC__ASSERT(0 != block2); |
| |
| if(0 != block1->data && 0 != block2->data) |
| return 0 == memcmp(block1->data, block2->data, block_length); |
| else |
| return block1->data == block2->data; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_is_equal(const FLAC__StreamMetadata *block1, const FLAC__StreamMetadata *block2) |
| { |
| FLAC__ASSERT(0 != block1); |
| FLAC__ASSERT(0 != block2); |
| |
| if(block1->type != block2->type) { |
| return false; |
| } |
| if(block1->is_last != block2->is_last) { |
| return false; |
| } |
| if(block1->length != block2->length) { |
| return false; |
| } |
| switch(block1->type) { |
| case FLAC__METADATA_TYPE_STREAMINFO: |
| return compare_block_data_streaminfo_(&block1->data.stream_info, &block2->data.stream_info); |
| case FLAC__METADATA_TYPE_PADDING: |
| return true; /* we don't compare the padding guts */ |
| case FLAC__METADATA_TYPE_APPLICATION: |
| return compare_block_data_application_(&block1->data.application, &block2->data.application, block1->length); |
| case FLAC__METADATA_TYPE_SEEKTABLE: |
| return compare_block_data_seektable_(&block1->data.seek_table, &block2->data.seek_table); |
| case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
| return compare_block_data_vorbiscomment_(&block1->data.vorbis_comment, &block2->data.vorbis_comment); |
| case FLAC__METADATA_TYPE_CUESHEET: |
| return compare_block_data_cuesheet_(&block1->data.cue_sheet, &block2->data.cue_sheet); |
| case FLAC__METADATA_TYPE_PICTURE: |
| return compare_block_data_picture_(&block1->data.picture, &block2->data.picture); |
| default: |
| return compare_block_data_unknown_(&block1->data.unknown, &block2->data.unknown, block1->length); |
| } |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_application_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, unsigned length, FLAC__bool copy) |
| { |
| FLAC__byte *save; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_APPLICATION); |
| FLAC__ASSERT((0 != data && length > 0) || (0 == data && length == 0 && copy == false)); |
| |
| save = object->data.application.data; |
| |
| /* do the copy first so that if we fail we leave the object untouched */ |
| if(copy) { |
| if(!copy_bytes_(&object->data.application.data, data, length)) |
| return false; |
| } |
| else { |
| object->data.application.data = data; |
| } |
| |
| free(save); |
| |
| object->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8 + length; |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_resize_points(FLAC__StreamMetadata *object, unsigned new_num_points) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| |
| if(0 == object->data.seek_table.points) { |
| FLAC__ASSERT(object->data.seek_table.num_points == 0); |
| if(0 == new_num_points) |
| return true; |
| else if(0 == (object->data.seek_table.points = seekpoint_array_new_(new_num_points))) |
| return false; |
| } |
| else { |
| const size_t old_size = object->data.seek_table.num_points * sizeof(FLAC__StreamMetadata_SeekPoint); |
| const size_t new_size = new_num_points * sizeof(FLAC__StreamMetadata_SeekPoint); |
| |
| /* overflow check */ |
| if(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(0 == (object->data.seek_table.points = realloc(object->data.seek_table.points, new_size))) |
| return false; |
| |
| /* if growing, set new elements to placeholders */ |
| if(new_size > old_size) { |
| unsigned i; |
| for(i = object->data.seek_table.num_points; i < new_num_points; i++) { |
| object->data.seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER; |
| object->data.seek_table.points[i].stream_offset = 0; |
| object->data.seek_table.points[i].frame_samples = 0; |
| } |
| } |
| } |
| |
| object->data.seek_table.num_points = new_num_points; |
| |
| seektable_calculate_length_(object); |
| return true; |
| } |
| |
| FLAC_API void FLAC__metadata_object_seektable_set_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| FLAC__ASSERT(point_num < object->data.seek_table.num_points); |
| |
| object->data.seek_table.points[point_num] = point; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_insert_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point) |
| { |
| int i; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| FLAC__ASSERT(point_num <= object->data.seek_table.num_points); |
| |
| if(!FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points+1)) |
| return false; |
| |
| /* move all points >= point_num forward one space */ |
| for(i = (int)object->data.seek_table.num_points-1; i > (int)point_num; i--) |
| object->data.seek_table.points[i] = object->data.seek_table.points[i-1]; |
| |
| FLAC__metadata_object_seektable_set_point(object, point_num, point); |
| seektable_calculate_length_(object); |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_delete_point(FLAC__StreamMetadata *object, unsigned point_num) |
| { |
| unsigned i; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| FLAC__ASSERT(point_num < object->data.seek_table.num_points); |
| |
| /* move all points > point_num backward one space */ |
| for(i = point_num; i < object->data.seek_table.num_points-1; i++) |
| object->data.seek_table.points[i] = object->data.seek_table.points[i+1]; |
| |
| return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points-1); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_is_legal(const FLAC__StreamMetadata *object) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| |
| return FLAC__format_seektable_is_legal(&object->data.seek_table); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_placeholders(FLAC__StreamMetadata *object, unsigned num) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| |
| if(num > 0) |
| /* WATCHOUT: we rely on the fact that growing the array adds PLACEHOLDERS at the end */ |
| return FLAC__metadata_object_seektable_resize_points(object, object->data.seek_table.num_points + num); |
| else |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_point(FLAC__StreamMetadata *object, FLAC__uint64 sample_number) |
| { |
| FLAC__StreamMetadata_SeekTable *seek_table; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| |
| seek_table = &object->data.seek_table; |
| |
| if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + 1)) |
| return false; |
| |
| seek_table->points[seek_table->num_points - 1].sample_number = sample_number; |
| seek_table->points[seek_table->num_points - 1].stream_offset = 0; |
| seek_table->points[seek_table->num_points - 1].frame_samples = 0; |
| |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_points(FLAC__StreamMetadata *object, FLAC__uint64 sample_numbers[], unsigned num) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| FLAC__ASSERT(0 != sample_numbers || num == 0); |
| |
| if(num > 0) { |
| FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table; |
| unsigned i, j; |
| |
| i = seek_table->num_points; |
| |
| if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num)) |
| return false; |
| |
| for(j = 0; j < num; i++, j++) { |
| seek_table->points[i].sample_number = sample_numbers[j]; |
| seek_table->points[i].stream_offset = 0; |
| seek_table->points[i].frame_samples = 0; |
| } |
| } |
| |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points(FLAC__StreamMetadata *object, unsigned num, FLAC__uint64 total_samples) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| FLAC__ASSERT(total_samples > 0); |
| |
| if(num > 0 && total_samples > 0) { |
| FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table; |
| unsigned i, j; |
| |
| i = seek_table->num_points; |
| |
| if(!FLAC__metadata_object_seektable_resize_points(object, seek_table->num_points + num)) |
| return false; |
| |
| for(j = 0; j < num; i++, j++) { |
| seek_table->points[i].sample_number = total_samples * (FLAC__uint64)j / (FLAC__uint64)num; |
| seek_table->points[i].stream_offset = 0; |
| seek_table->points[i].frame_samples = 0; |
| } |
| } |
| |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(FLAC__StreamMetadata *object, unsigned samples, FLAC__uint64 total_samples) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| FLAC__ASSERT(samples > 0); |
| FLAC__ASSERT(total_samples > 0); |
| |
| if(samples > 0 && total_samples > 0) { |
| FLAC__StreamMetadata_SeekTable *seek_table = &object->data.seek_table; |
| unsigned i, j; |
| FLAC__uint64 num, sample; |
| |
| num = 1 + total_samples / samples; /* 1+ for the first sample at 0 */ |
| /* now account for the fact that we don't place a seekpoint at "total_samples" since samples are number from 0: */ |
| if(total_samples % samples == 0) |
| num--; |
| |
| /* Put a strict upper bound on the number of allowed seek points. */ |
| if (num > 32768) { |
| /* Set the bound and recalculate samples accordingly. */ |
| num = 32786; |
| 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(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_SEEKTABLE); |
| |
| unique = FLAC__format_seektable_sort(&object->data.seek_table); |
| |
| return !compact || FLAC__metadata_object_seektable_resize_points(object, unique); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_vendor_string(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| { |
| if(!FLAC__format_vorbiscomment_entry_value_is_legal(entry.entry, entry.length)) |
| return false; |
| return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.vendor_string, &entry, copy); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_resize_comments(FLAC__StreamMetadata *object, unsigned new_num_comments) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| |
| if(0 == object->data.vorbis_comment.comments) { |
| FLAC__ASSERT(object->data.vorbis_comment.num_comments == 0); |
| if(0 == new_num_comments) |
| return true; |
| else if(0 == (object->data.vorbis_comment.comments = vorbiscomment_entry_array_new_(new_num_comments))) |
| return false; |
| } |
| else { |
| const size_t old_size = object->data.vorbis_comment.num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry); |
| const size_t new_size = new_num_comments * sizeof(FLAC__StreamMetadata_VorbisComment_Entry); |
| |
| /* overflow check */ |
| if(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(0 != object->data.vorbis_comment.comments[i].entry) |
| free(object->data.vorbis_comment.comments[i].entry); |
| } |
| |
| if(new_size == 0) { |
| free(object->data.vorbis_comment.comments); |
| object->data.vorbis_comment.comments = 0; |
| } |
| else if(0 == (object->data.vorbis_comment.comments = realloc(object->data.vorbis_comment.comments, new_size))) |
| return false; |
| |
| /* if growing, zero all the length/pointers of new elements */ |
| if(new_size > old_size) |
| memset(object->data.vorbis_comment.comments + object->data.vorbis_comment.num_comments, 0, new_size - old_size); |
| } |
| |
| object->data.vorbis_comment.num_comments = new_num_comments; |
| |
| vorbiscomment_calculate_length_(object); |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments); |
| |
| if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| return false; |
| return vorbiscomment_set_entry_(object, &object->data.vorbis_comment.comments[comment_num], &entry, copy); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_insert_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| { |
| FLAC__StreamMetadata_VorbisComment *vc; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| FLAC__ASSERT(comment_num <= object->data.vorbis_comment.num_comments); |
| |
| if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| return false; |
| |
| vc = &object->data.vorbis_comment; |
| |
| if(!FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments+1)) |
| return false; |
| |
| /* move all comments >= comment_num forward one space */ |
| memmove(&vc->comments[comment_num+1], &vc->comments[comment_num], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-1-comment_num)); |
| vc->comments[comment_num].length = 0; |
| vc->comments[comment_num].entry = 0; |
| |
| return FLAC__metadata_object_vorbiscomment_set_comment(object, comment_num, entry, copy); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_append_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| return FLAC__metadata_object_vorbiscomment_insert_comment(object, object->data.vorbis_comment.num_comments, entry, copy); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_replace_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool all, FLAC__bool copy) |
| { |
| FLAC__ASSERT(0 != entry.entry && entry.length > 0); |
| |
| if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| return false; |
| |
| { |
| int i; |
| size_t field_name_length; |
| const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); |
| |
| FLAC__ASSERT(0 != eq); |
| |
| if(0 == eq) |
| return false; /* double protection */ |
| |
| field_name_length = eq-entry.entry; |
| |
| 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(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| FLAC__ASSERT(comment_num < object->data.vorbis_comment.num_comments); |
| |
| vc = &object->data.vorbis_comment; |
| |
| /* free the comment at comment_num */ |
| free(vc->comments[comment_num].entry); |
| |
| /* move all comments > comment_num backward one space */ |
| memmove(&vc->comments[comment_num], &vc->comments[comment_num+1], sizeof(FLAC__StreamMetadata_VorbisComment_Entry)*(vc->num_comments-comment_num-1)); |
| vc->comments[vc->num_comments-1].length = 0; |
| vc->comments[vc->num_comments-1].entry = 0; |
| |
| return FLAC__metadata_object_vorbiscomment_resize_comments(object, vc->num_comments-1); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(FLAC__StreamMetadata_VorbisComment_Entry *entry, const char *field_name, const char *field_value) |
| { |
| FLAC__ASSERT(0 != entry); |
| FLAC__ASSERT(0 != field_name); |
| FLAC__ASSERT(0 != field_value); |
| |
| if(!FLAC__format_vorbiscomment_entry_name_is_legal(field_name)) |
| return false; |
| if(!FLAC__format_vorbiscomment_entry_value_is_legal((const FLAC__byte *)field_value, (unsigned)(-1))) |
| return false; |
| |
| { |
| const size_t nn = strlen(field_name); |
| const size_t nv = strlen(field_value); |
| entry->length = nn + 1 /*=*/ + nv; |
| if(0 == (entry->entry = safe_malloc_add_4op_(nn, /*+*/1, /*+*/nv, /*+*/1))) |
| return false; |
| memcpy(entry->entry, field_name, nn); |
| entry->entry[nn] = '='; |
| memcpy(entry->entry+nn+1, field_value, nv); |
| entry->entry[entry->length] = '\0'; |
| } |
| |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_to_name_value_pair(const FLAC__StreamMetadata_VorbisComment_Entry entry, char **field_name, char **field_value) |
| { |
| FLAC__ASSERT(0 != entry.entry && entry.length > 0); |
| FLAC__ASSERT(0 != field_name); |
| FLAC__ASSERT(0 != field_value); |
| |
| if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) |
| return false; |
| |
| { |
| const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); |
| const size_t nn = eq-entry.entry; |
| const size_t nv = entry.length-nn-1; /* -1 for the '=' */ |
| FLAC__ASSERT(0 != eq); |
| if(0 == eq) |
| return false; /* double protection */ |
| if(0 == (*field_name = safe_malloc_add_2op_(nn, /*+*/1))) |
| return false; |
| if(0 == (*field_value = safe_malloc_add_2op_(nv, /*+*/1))) { |
| free(*field_name); |
| return false; |
| } |
| memcpy(*field_name, entry.entry, nn); |
| memcpy(*field_value, entry.entry+nn+1, nv); |
| (*field_name)[nn] = '\0'; |
| (*field_value)[nv] = '\0'; |
| } |
| |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_matches(const FLAC__StreamMetadata_VorbisComment_Entry entry, const char *field_name, unsigned field_name_length) |
| { |
| FLAC__ASSERT(0 != entry.entry && entry.length > 0); |
| { |
| const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length); |
| return (0 != eq && (unsigned)(eq-entry.entry) == field_name_length && 0 == FLAC__STRNCASECMP(field_name, (const char *)entry.entry, field_name_length)); |
| } |
| } |
| |
| FLAC_API int FLAC__metadata_object_vorbiscomment_find_entry_from(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name) |
| { |
| FLAC__ASSERT(0 != field_name); |
| |
| return vorbiscomment_find_entry_from_(object, offset, field_name, strlen(field_name)); |
| } |
| |
| FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entry_matching(FLAC__StreamMetadata *object, const char *field_name) |
| { |
| const unsigned field_name_length = strlen(field_name); |
| unsigned i; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| |
| for(i = 0; i < object->data.vorbis_comment.num_comments; i++) { |
| if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) { |
| if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, i)) |
| return -1; |
| else |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entries_matching(FLAC__StreamMetadata *object, const char *field_name) |
| { |
| FLAC__bool ok = true; |
| unsigned matching = 0; |
| const unsigned field_name_length = strlen(field_name); |
| int i; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); |
| |
| /* must delete from end to start otherwise it will interfere with our iteration */ |
| for(i = (int)object->data.vorbis_comment.num_comments - 1; ok && i >= 0; i--) { |
| if(FLAC__metadata_object_vorbiscomment_entry_matches(object->data.vorbis_comment.comments[i], field_name, field_name_length)) { |
| matching++; |
| ok &= FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i); |
| } |
| } |
| |
| return ok? (int)matching : -1; |
| } |
| |
| FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_new(void) |
| { |
| return calloc(1, sizeof(FLAC__StreamMetadata_CueSheet_Track)); |
| } |
| |
| FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_clone(const FLAC__StreamMetadata_CueSheet_Track *object) |
| { |
| FLAC__StreamMetadata_CueSheet_Track *to; |
| |
| FLAC__ASSERT(0 != object); |
| |
| if(0 != (to = FLAC__metadata_object_cuesheet_track_new())) { |
| if(!copy_track_(to, object)) { |
| FLAC__metadata_object_cuesheet_track_delete(to); |
| return 0; |
| } |
| } |
| |
| return to; |
| } |
| |
| void FLAC__metadata_object_cuesheet_track_delete_data(FLAC__StreamMetadata_CueSheet_Track *object) |
| { |
| FLAC__ASSERT(0 != object); |
| |
| if(0 != object->indices) { |
| FLAC__ASSERT(object->num_indices > 0); |
| free(object->indices); |
| } |
| } |
| |
| FLAC_API void FLAC__metadata_object_cuesheet_track_delete(FLAC__StreamMetadata_CueSheet_Track *object) |
| { |
| FLAC__metadata_object_cuesheet_track_delete_data(object); |
| free(object); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_resize_indices(FLAC__StreamMetadata *object, unsigned track_num, unsigned new_num_indices) |
| { |
| FLAC__StreamMetadata_CueSheet_Track *track; |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| |
| track = &object->data.cue_sheet.tracks[track_num]; |
| |
| if(0 == track->indices) { |
| FLAC__ASSERT(track->num_indices == 0); |
| if(0 == new_num_indices) |
| return true; |
| else if(0 == (track->indices = cuesheet_track_index_array_new_(new_num_indices))) |
| return false; |
| } |
| else { |
| const size_t old_size = track->num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index); |
| const size_t new_size = new_num_indices * sizeof(FLAC__StreamMetadata_CueSheet_Index); |
| |
| /* overflow check */ |
| if(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(0 == (track->indices = realloc(track->indices, new_size))) |
| return false; |
| |
| /* if growing, zero all the lengths/pointers of new elements */ |
| if(new_size > old_size) |
| memset(track->indices + track->num_indices, 0, new_size - old_size); |
| } |
| |
| track->num_indices = new_num_indices; |
| |
| cuesheet_calculate_length_(object); |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num, FLAC__StreamMetadata_CueSheet_Index indx) |
| { |
| FLAC__StreamMetadata_CueSheet_Track *track; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| FLAC__ASSERT(index_num <= object->data.cue_sheet.tracks[track_num].num_indices); |
| |
| track = &object->data.cue_sheet.tracks[track_num]; |
| |
| if(!FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices+1)) |
| return false; |
| |
| /* move all indices >= index_num forward one space */ |
| memmove(&track->indices[index_num+1], &track->indices[index_num], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-1-index_num)); |
| |
| track->indices[index_num] = 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(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| FLAC__ASSERT(index_num < object->data.cue_sheet.tracks[track_num].num_indices); |
| |
| track = &object->data.cue_sheet.tracks[track_num]; |
| |
| /* move all indices > index_num backward one space */ |
| memmove(&track->indices[index_num], &track->indices[index_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Index)*(track->num_indices-index_num-1)); |
| |
| FLAC__metadata_object_cuesheet_track_resize_indices(object, track_num, track->num_indices-1); |
| cuesheet_calculate_length_(object); |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_resize_tracks(FLAC__StreamMetadata *object, unsigned new_num_tracks) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| |
| if(0 == object->data.cue_sheet.tracks) { |
| FLAC__ASSERT(object->data.cue_sheet.num_tracks == 0); |
| if(0 == new_num_tracks) |
| return true; |
| else if(0 == (object->data.cue_sheet.tracks = cuesheet_track_array_new_(new_num_tracks))) |
| return false; |
| } |
| else { |
| const size_t old_size = object->data.cue_sheet.num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track); |
| const size_t new_size = new_num_tracks * sizeof(FLAC__StreamMetadata_CueSheet_Track); |
| |
| /* overflow check */ |
| if(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(0 == (object->data.cue_sheet.tracks = realloc(object->data.cue_sheet.tracks, new_size))) |
| return false; |
| |
| /* if growing, zero all the lengths/pointers of new elements */ |
| if(new_size > old_size) |
| memset(object->data.cue_sheet.tracks + object->data.cue_sheet.num_tracks, 0, new_size - old_size); |
| } |
| |
| object->data.cue_sheet.num_tracks = new_num_tracks; |
| |
| cuesheet_calculate_length_(object); |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_set_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| |
| return cuesheet_set_track_(object, object->data.cue_sheet.tracks + track_num, track, copy); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy) |
| { |
| FLAC__StreamMetadata_CueSheet *cs; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| FLAC__ASSERT(track_num <= object->data.cue_sheet.num_tracks); |
| |
| cs = &object->data.cue_sheet; |
| |
| if(!FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks+1)) |
| return false; |
| |
| /* move all tracks >= track_num forward one space */ |
| memmove(&cs->tracks[track_num+1], &cs->tracks[track_num], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-1-track_num)); |
| cs->tracks[track_num].num_indices = 0; |
| cs->tracks[track_num].indices = 0; |
| |
| return FLAC__metadata_object_cuesheet_set_track(object, track_num, track, copy); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_insert_blank_track(FLAC__StreamMetadata *object, unsigned track_num) |
| { |
| FLAC__StreamMetadata_CueSheet_Track track; |
| memset(&track, 0, sizeof(track)); |
| return FLAC__metadata_object_cuesheet_insert_track(object, track_num, &track, /*copy=*/false); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_delete_track(FLAC__StreamMetadata *object, unsigned track_num) |
| { |
| FLAC__StreamMetadata_CueSheet *cs; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| FLAC__ASSERT(track_num < object->data.cue_sheet.num_tracks); |
| |
| cs = &object->data.cue_sheet; |
| |
| /* free the track at track_num */ |
| free(cs->tracks[track_num].indices); |
| |
| /* move all tracks > track_num backward one space */ |
| memmove(&cs->tracks[track_num], &cs->tracks[track_num+1], sizeof(FLAC__StreamMetadata_CueSheet_Track)*(cs->num_tracks-track_num-1)); |
| cs->tracks[cs->num_tracks-1].num_indices = 0; |
| cs->tracks[cs->num_tracks-1].indices = 0; |
| |
| return FLAC__metadata_object_cuesheet_resize_tracks(object, cs->num_tracks-1); |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMetadata *object, FLAC__bool check_cd_da_subset, const char **violation) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| |
| return FLAC__format_cuesheet_is_legal(&object->data.cue_sheet, check_cd_da_subset, violation); |
| } |
| |
| static FLAC__uint64 get_index_01_offset_(const FLAC__StreamMetadata_CueSheet *cs, unsigned track) |
| { |
| if (track >= (cs->num_tracks-1) || cs->tracks[track].num_indices < 1) |
| return 0; |
| else if (cs->tracks[track].indices[0].number == 1) |
| return cs->tracks[track].indices[0].offset + cs->tracks[track].offset + cs->lead_in; |
| else if (cs->tracks[track].num_indices < 2) |
| return 0; |
| else if (cs->tracks[track].indices[1].number == 1) |
| return cs->tracks[track].indices[1].offset + cs->tracks[track].offset + cs->lead_in; |
| else |
| return 0; |
| } |
| |
| static FLAC__uint32 cddb_add_digits_(FLAC__uint32 x) |
| { |
| FLAC__uint32 n = 0; |
| while (x) { |
| n += (x%10); |
| x /= 10; |
| } |
| return n; |
| } |
| |
| /*@@@@add to tests*/ |
| FLAC_API FLAC__uint32 FLAC__metadata_object_cuesheet_calculate_cddb_id(const FLAC__StreamMetadata *object) |
| { |
| const FLAC__StreamMetadata_CueSheet *cs; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_CUESHEET); |
| |
| cs = &object->data.cue_sheet; |
| |
| if (cs->num_tracks < 2) /* need at least one real track and the lead-out track */ |
| return 0; |
| |
| { |
| FLAC__uint32 i, length, sum = 0; |
| for (i = 0; i < (cs->num_tracks-1); i++) /* -1 to avoid counting the lead-out */ |
| sum += cddb_add_digits_((FLAC__uint32)(get_index_01_offset_(cs, i) / 44100)); |
| length = (FLAC__uint32)((cs->tracks[cs->num_tracks-1].offset+cs->lead_in) / 44100) - (FLAC__uint32)(get_index_01_offset_(cs, 0) / 44100); |
| |
| return (sum % 0xFF) << 24 | length << 8 | (FLAC__uint32)(cs->num_tracks-1); |
| } |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_picture_set_mime_type(FLAC__StreamMetadata *object, char *mime_type, FLAC__bool copy) |
| { |
| char *old; |
| size_t old_length, new_length; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| FLAC__ASSERT(0 != mime_type); |
| |
| old = object->data.picture.mime_type; |
| old_length = old? strlen(old) : 0; |
| new_length = strlen(mime_type); |
| |
| /* do the copy first so that if we fail we leave the object untouched */ |
| if(copy) { |
| if(new_length >= SIZE_MAX) /* overflow check */ |
| return false; |
| if(!copy_bytes_((FLAC__byte**)(&object->data.picture.mime_type), (FLAC__byte*)mime_type, new_length+1)) |
| return false; |
| } |
| else { |
| object->data.picture.mime_type = mime_type; |
| } |
| |
| free(old); |
| |
| object->length -= old_length; |
| object->length += new_length; |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_picture_set_description(FLAC__StreamMetadata *object, FLAC__byte *description, FLAC__bool copy) |
| { |
| FLAC__byte *old; |
| size_t old_length, new_length; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| FLAC__ASSERT(0 != description); |
| |
| old = object->data.picture.description; |
| old_length = old? strlen((const char *)old) : 0; |
| new_length = strlen((const char *)description); |
| |
| /* do the copy first so that if we fail we leave the object untouched */ |
| if(copy) { |
| if(new_length >= SIZE_MAX) /* overflow check */ |
| return false; |
| if(!copy_bytes_(&object->data.picture.description, description, new_length+1)) |
| return false; |
| } |
| else { |
| object->data.picture.description = description; |
| } |
| |
| free(old); |
| |
| object->length -= old_length; |
| object->length += new_length; |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_picture_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, FLAC__uint32 length, FLAC__bool copy) |
| { |
| FLAC__byte *old; |
| |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| FLAC__ASSERT((0 != data && length > 0) || (0 == data && length == 0 && copy == false)); |
| |
| old = object->data.picture.data; |
| |
| /* do the copy first so that if we fail we leave the object untouched */ |
| if(copy) { |
| if(!copy_bytes_(&object->data.picture.data, data, length)) |
| return false; |
| } |
| else { |
| object->data.picture.data = data; |
| } |
| |
| free(old); |
| |
| object->length -= object->data.picture.data_length; |
| object->data.picture.data_length = length; |
| object->length += length; |
| return true; |
| } |
| |
| FLAC_API FLAC__bool FLAC__metadata_object_picture_is_legal(const FLAC__StreamMetadata *object, const char **violation) |
| { |
| FLAC__ASSERT(0 != object); |
| FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_PICTURE); |
| |
| return FLAC__format_picture_is_legal(&object->data.picture, violation); |
| } |