diff options
Diffstat (limited to '')
-rw-r--r-- | src/decoder/flac_metadata.c | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/src/decoder/flac_metadata.c b/src/decoder/flac_metadata.c deleted file mode 100644 index bd1eaf323..000000000 --- a/src/decoder/flac_metadata.c +++ /dev/null @@ -1,323 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "flac_metadata.h" -#include "replay_gain_info.h" -#include "tag.h" -#include "tag_handler.h" -#include "tag_table.h" - -#include <glib.h> - -#include <assert.h> -#include <stdbool.h> -#include <stdlib.h> - -static bool -flac_find_float_comment(const FLAC__StreamMetadata *block, - const char *cmnt, float *fl) -{ - int offset; - size_t pos; - int len; - unsigned char tmp, *p; - - offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, 0, - cmnt); - if (offset < 0) - return false; - - pos = strlen(cmnt) + 1; /* 1 is for '=' */ - len = block->data.vorbis_comment.comments[offset].length - pos; - if (len <= 0) - return false; - - p = &block->data.vorbis_comment.comments[offset].entry[pos]; - tmp = p[len]; - p[len] = '\0'; - *fl = (float)atof((char *)p); - p[len] = tmp; - - return true; -} - -bool -flac_parse_replay_gain(struct replay_gain_info *rgi, - const FLAC__StreamMetadata *block) -{ - bool found = false; - - replay_gain_info_init(rgi); - - if (flac_find_float_comment(block, "replaygain_album_gain", - &rgi->tuples[REPLAY_GAIN_ALBUM].gain)) - found = true; - if (flac_find_float_comment(block, "replaygain_album_peak", - &rgi->tuples[REPLAY_GAIN_ALBUM].peak)) - found = true; - if (flac_find_float_comment(block, "replaygain_track_gain", - &rgi->tuples[REPLAY_GAIN_TRACK].gain)) - found = true; - if (flac_find_float_comment(block, "replaygain_track_peak", - &rgi->tuples[REPLAY_GAIN_TRACK].peak)) - found = true; - - return found; -} - -static bool -flac_find_string_comment(const FLAC__StreamMetadata *block, - const char *cmnt, char **str) -{ - int offset; - size_t pos; - int len; - const unsigned char *p; - - *str = NULL; - offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, 0, - cmnt); - if (offset < 0) - return false; - - pos = strlen(cmnt) + 1; /* 1 is for '=' */ - len = block->data.vorbis_comment.comments[offset].length - pos; - if (len <= 0) - return false; - - p = &block->data.vorbis_comment.comments[offset].entry[pos]; - *str = g_strndup((const char *)p, len); - - return true; -} - -bool -flac_parse_mixramp(char **mixramp_start, char **mixramp_end, - const FLAC__StreamMetadata *block) -{ - bool found = false; - - if (flac_find_string_comment(block, "mixramp_start", mixramp_start)) - found = true; - if (flac_find_string_comment(block, "mixramp_end", mixramp_end)) - found = true; - - return found; -} - -/** - * Checks if the specified name matches the entry's name, and if yes, - * returns the comment value (not null-temrinated). - */ -static const char * -flac_comment_value(const FLAC__StreamMetadata_VorbisComment_Entry *entry, - const char *name, const char *char_tnum, size_t *length_r) -{ - size_t name_length = strlen(name); - size_t char_tnum_length = 0; - const char *comment = (const char*)entry->entry; - - if (entry->length <= name_length || - g_ascii_strncasecmp(comment, name, name_length) != 0) - return NULL; - - if (char_tnum != NULL) { - char_tnum_length = strlen(char_tnum); - if (entry->length > name_length + char_tnum_length + 2 && - comment[name_length] == '[' && - g_ascii_strncasecmp(comment + name_length + 1, - char_tnum, char_tnum_length) == 0 && - comment[name_length + char_tnum_length + 1] == ']') - name_length = name_length + char_tnum_length + 2; - else if (entry->length > name_length + char_tnum_length && - g_ascii_strncasecmp(comment + name_length, - char_tnum, char_tnum_length) == 0) - name_length = name_length + char_tnum_length; - } - - if (comment[name_length] == '=') { - *length_r = entry->length - name_length - 1; - return comment + name_length + 1; - } - - return NULL; -} - -/** - * Check if the comment's name equals the passed name, and if so, copy - * the comment value into the tag. - */ -static bool -flac_copy_comment(const FLAC__StreamMetadata_VorbisComment_Entry *entry, - const char *name, enum tag_type tag_type, - const char *char_tnum, - const struct tag_handler *handler, void *handler_ctx) -{ - const char *value; - size_t value_length; - - value = flac_comment_value(entry, name, char_tnum, &value_length); - if (value != NULL) { - char *p = g_strndup(value, value_length); - tag_handler_invoke_tag(handler, handler_ctx, tag_type, p); - g_free(p); - return true; - } - - return false; -} - -static const struct tag_table flac_tags[] = { - { "tracknumber", TAG_TRACK }, - { "discnumber", TAG_DISC }, - { "album artist", TAG_ALBUM_ARTIST }, - { NULL, TAG_NUM_OF_ITEM_TYPES } -}; - -static void -flac_scan_comment(const char *char_tnum, - const FLAC__StreamMetadata_VorbisComment_Entry *entry, - const struct tag_handler *handler, void *handler_ctx) -{ - if (handler->pair != NULL) { - char *name = g_strdup((const char*)entry->entry); - char *value = strchr(name, '='); - - if (value != NULL && value > name) { - *value++ = 0; - tag_handler_invoke_pair(handler, handler_ctx, - name, value); - } - - g_free(name); - } - - for (const struct tag_table *i = flac_tags; i->name != NULL; ++i) - if (flac_copy_comment(entry, i->name, i->type, char_tnum, - handler, handler_ctx)) - return; - - for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i) - if (flac_copy_comment(entry, - tag_item_names[i], i, char_tnum, - handler, handler_ctx)) - return; -} - -static void -flac_scan_comments(const char *char_tnum, - const FLAC__StreamMetadata_VorbisComment *comment, - const struct tag_handler *handler, void *handler_ctx) -{ - for (unsigned i = 0; i < comment->num_comments; ++i) - flac_scan_comment(char_tnum, &comment->comments[i], - handler, handler_ctx); -} - -void -flac_scan_metadata(const char *track, - const FLAC__StreamMetadata *block, - const struct tag_handler *handler, void *handler_ctx) -{ - switch (block->type) { - case FLAC__METADATA_TYPE_VORBIS_COMMENT: - flac_scan_comments(track, &block->data.vorbis_comment, - handler, handler_ctx); - break; - - case FLAC__METADATA_TYPE_STREAMINFO: - if (block->data.stream_info.sample_rate > 0) - tag_handler_invoke_duration(handler, handler_ctx, - flac_duration(&block->data.stream_info)); - break; - - default: - break; - } -} - -void -flac_vorbis_comments_to_tag(struct tag *tag, const char *char_tnum, - const FLAC__StreamMetadata_VorbisComment *comment) -{ - flac_scan_comments(char_tnum, comment, - &add_tag_handler, tag); -} - -bool -flac_scan_file2(const char *file, const char *char_tnum, - const struct tag_handler *handler, void *handler_ctx) -{ - FLAC__Metadata_SimpleIterator *it; - FLAC__StreamMetadata *block = NULL; - - it = FLAC__metadata_simple_iterator_new(); - if (!FLAC__metadata_simple_iterator_init(it, file, 1, 0)) { - const char *err; - FLAC_API FLAC__Metadata_SimpleIteratorStatus s; - - s = FLAC__metadata_simple_iterator_status(it); - - switch (s) { /* slightly more human-friendly messages: */ - case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT: - err = "illegal input"; - break; - case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE: - err = "error opening file"; - break; - case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE: - err = "not a FLAC file"; - break; - default: - err = FLAC__Metadata_SimpleIteratorStatusString[s]; - } - g_debug("Reading '%s' metadata gave the following error: %s\n", - file, err); - FLAC__metadata_simple_iterator_delete(it); - return false; - } - - do { - block = FLAC__metadata_simple_iterator_get_block(it); - if (!block) - break; - - flac_scan_metadata(char_tnum, block, handler, handler_ctx); - FLAC__metadata_object_delete(block); - } while (FLAC__metadata_simple_iterator_next(it)); - - FLAC__metadata_simple_iterator_delete(it); - - return true; -} - -struct tag * -flac_tag_load(const char *file, const char *char_tnum) -{ - struct tag *tag = tag_new(); - - if (!flac_scan_file2(file, char_tnum, &add_tag_handler, tag) || - tag_is_empty(tag)) { - tag_free(tag); - tag = NULL; - } - - return tag; -} |