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-rw-r--r--src/tag_id3.c210
1 files changed, 91 insertions, 119 deletions
diff --git a/src/tag_id3.c b/src/tag_id3.c
index 84e980ec3..66d37be9e 100644
--- a/src/tag_id3.c
+++ b/src/tag_id3.c
@@ -119,9 +119,16 @@ import_id3_string(bool is_id3v1, const id3_ucs4_t *ucs4, enum tag_type type)
return utf8_stripped;
}
+/**
+ * Import a "Text information frame" (ID3v2.4.0 section 4.2). It
+ * contains 2 fields:
+ *
+ * - encoding
+ * - string list
+ */
static void
-tag_id3_import_frame(struct tag *dest, struct id3_tag *tag, const char *id,
- enum tag_type type)
+tag_id3_import_text(struct tag *dest, struct id3_tag *tag, const char *id,
+ enum tag_type type)
{
struct id3_frame const *frame;
id3_ucs4_t const *ucs4;
@@ -130,110 +137,75 @@ tag_id3_import_frame(struct tag *dest, struct id3_tag *tag, const char *id,
unsigned int nstrings, i;
frame = id3_tag_findframe(tag, id, 0);
- /* Check frame */
- if (!frame)
- {
+ if (frame == NULL || frame->nfields != 2)
return;
- }
- /* Check fields in frame */
- if(frame->nfields == 0)
- {
- g_debug("Frame has no fields");
+
+ /* check the encoding field */
+
+ field = id3_frame_field(frame, 0);
+ if (field == NULL || field->type != ID3_FIELD_TYPE_TEXTENCODING)
return;
- }
- /* Starting with T is a stringlist */
- if (id[0] == 'T')
- {
- /* This one contains 2 fields:
- * 1st: Text encoding
- * 2: Stringlist
- * Shamefully this isn't the RL case.
- * But I am going to enforce it anyway.
- */
- if(frame->nfields != 2)
- {
- g_debug("Invalid number '%i' of fields for TXX frame",
- frame->nfields);
- return;
- }
- field = &frame->fields[0];
- /**
- * First field is encoding field.
- * This is ignored by mpd.
- */
- if(field->type != ID3_FIELD_TYPE_TEXTENCODING)
- {
- g_debug("Expected encoding, found: %i",
- field->type);
- }
- /* Process remaining fields, should be only one */
- field = &frame->fields[1];
- /* Encoding field */
- if(field->type == ID3_FIELD_TYPE_STRINGLIST) {
- /* Get the number of strings available */
- nstrings = id3_field_getnstrings(field);
- for (i = 0; i < nstrings; i++) {
- ucs4 = id3_field_getstrings(field,i);
- if(!ucs4)
- continue;
- utf8 = import_id3_string(tag_is_id3v1(tag),
- ucs4, type);
- if(!utf8)
- continue;
-
- tag_add_item(dest, type, (char *)utf8);
- g_free(utf8);
- }
- }
- else {
- g_warning("Field type not processed: %i",
- (int)id3_field_gettextencoding(field));
- }
- }
- /* A comment frame */
- else if(!strcmp(ID3_FRAME_COMMENT, id))
- {
- /* A comment frame is different... */
- /* 1st: encoding
- * 2nd: Language
- * 3rd: String
- * 4th: FullString.
- * The 'value' we want is in the 4th field
- */
- if(frame->nfields == 4)
- {
- /* for now I only read the 4th field, with the fullstring */
- field = &frame->fields[3];
- if(field->type == ID3_FIELD_TYPE_STRINGFULL)
- {
- ucs4 = id3_field_getfullstring(field);
- if(ucs4)
- {
- utf8 = import_id3_string(tag_is_id3v1(tag),
- ucs4, type);
- if(utf8)
- {
- tag_add_item(dest, type, (char *)utf8);
- g_free(utf8);
- }
- }
- }
- else
- {
- g_debug("4th field in comment frame differs from expected, got '%i': ignoring",
- field->type);
- }
- }
- else
- {
- g_debug("Invalid 'comments' tag, got '%i' fields instead of 4",
- frame->nfields);
- }
+ /* process the value(s) */
+
+ field = id3_frame_field(frame, 1);
+ if (field == NULL || field->type != ID3_FIELD_TYPE_STRINGLIST)
+ return;
+
+ /* Get the number of strings available */
+ nstrings = id3_field_getnstrings(field);
+ for (i = 0; i < nstrings; i++) {
+ ucs4 = id3_field_getstrings(field, i);
+ if (ucs4 == NULL)
+ continue;
+
+ utf8 = import_id3_string(tag_is_id3v1(tag),
+ ucs4, type);
+ if (utf8 == NULL)
+ continue;
+
+ tag_add_item(dest, type, (char *)utf8);
+ g_free(utf8);
}
- /* Unsupported */
- else
- g_debug("Unsupported tag type requrested");
+}
+
+/**
+ * Import a "Comment frame" (ID3v2.4.0 section 4.10). It
+ * contains 4 fields:
+ *
+ * - encoding
+ * - language
+ * - string
+ * - full string (we use this one)
+ */
+static void
+tag_id3_import_comment(struct tag *dest, struct id3_tag *tag, const char *id,
+ enum tag_type type)
+{
+ struct id3_frame const *frame;
+ id3_ucs4_t const *ucs4;
+ id3_utf8_t *utf8;
+ union id3_field const *field;
+
+ frame = id3_tag_findframe(tag, id, 0);
+ if (frame == NULL || frame->nfields != 4)
+ return;
+
+ /* for now I only read the 4th field, with the fullstring */
+ field = id3_frame_field(frame, 3);
+ if (field == NULL)
+ return;
+
+ ucs4 = id3_field_getfullstring(field);
+ if (ucs4 == NULL)
+ return;
+
+ utf8 = import_id3_string(tag_is_id3v1(tag), ucs4, type);
+ if (utf8 == NULL)
+ return;
+
+ tag_add_item(dest, type, (char *)utf8);
+ g_free(utf8);
}
/**
@@ -339,23 +311,23 @@ struct tag *tag_id3_import(struct id3_tag * tag)
{
struct tag *ret = tag_new();
- tag_id3_import_frame(ret, tag, ID3_FRAME_ARTIST, TAG_ITEM_ARTIST);
- tag_id3_import_frame(ret, tag, ID3_FRAME_ALBUM_ARTIST,
- TAG_ITEM_ALBUM_ARTIST);
- tag_id3_import_frame(ret, tag, ID3_FRAME_ARTIST_SORT,
- TAG_ARTIST_SORT);
- tag_id3_import_frame(ret, tag, ID3_FRAME_ALBUM_ARTIST_SORT,
- TAG_ALBUM_ARTIST_SORT);
- tag_id3_import_frame(ret, tag, ID3_FRAME_TITLE, TAG_ITEM_TITLE);
- tag_id3_import_frame(ret, tag, ID3_FRAME_ALBUM, TAG_ITEM_ALBUM);
- tag_id3_import_frame(ret, tag, ID3_FRAME_TRACK, TAG_ITEM_TRACK);
- tag_id3_import_frame(ret, tag, ID3_FRAME_YEAR, TAG_ITEM_DATE);
- tag_id3_import_frame(ret, tag, ID3_FRAME_GENRE, TAG_ITEM_GENRE);
- tag_id3_import_frame(ret, tag, ID3_FRAME_COMPOSER, TAG_ITEM_COMPOSER);
- tag_id3_import_frame(ret, tag, "TPE3", TAG_ITEM_PERFORMER);
- tag_id3_import_frame(ret, tag, "TPE4", TAG_ITEM_PERFORMER);
- tag_id3_import_frame(ret, tag, ID3_FRAME_COMMENT, TAG_ITEM_COMMENT);
- tag_id3_import_frame(ret, tag, ID3_FRAME_DISC, TAG_ITEM_DISC);
+ tag_id3_import_text(ret, tag, ID3_FRAME_ARTIST, TAG_ITEM_ARTIST);
+ tag_id3_import_text(ret, tag, ID3_FRAME_ALBUM_ARTIST,
+ TAG_ITEM_ALBUM_ARTIST);
+ tag_id3_import_text(ret, tag, ID3_FRAME_ARTIST_SORT,
+ TAG_ARTIST_SORT);
+ tag_id3_import_text(ret, tag, ID3_FRAME_ALBUM_ARTIST_SORT,
+ TAG_ALBUM_ARTIST_SORT);
+ tag_id3_import_text(ret, tag, ID3_FRAME_TITLE, TAG_ITEM_TITLE);
+ tag_id3_import_text(ret, tag, ID3_FRAME_ALBUM, TAG_ITEM_ALBUM);
+ tag_id3_import_text(ret, tag, ID3_FRAME_TRACK, TAG_ITEM_TRACK);
+ tag_id3_import_text(ret, tag, ID3_FRAME_YEAR, TAG_ITEM_DATE);
+ tag_id3_import_text(ret, tag, ID3_FRAME_GENRE, TAG_ITEM_GENRE);
+ tag_id3_import_text(ret, tag, ID3_FRAME_COMPOSER, TAG_ITEM_COMPOSER);
+ tag_id3_import_text(ret, tag, "TPE3", TAG_ITEM_PERFORMER);
+ tag_id3_import_text(ret, tag, "TPE4", TAG_ITEM_PERFORMER);
+ tag_id3_import_comment(ret, tag, ID3_FRAME_COMMENT, TAG_ITEM_COMMENT);
+ tag_id3_import_text(ret, tag, ID3_FRAME_DISC, TAG_ITEM_DISC);
tag_id3_import_musicbrainz(ret, tag);
tag_id3_import_ufid(ret, tag);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 04:49:36 +0000