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authorWarren Dukes <warren.dukes@gmail.com>2005-03-07 00:51:21 +0000
committerWarren Dukes <warren.dukes@gmail.com>2005-03-07 00:51:21 +0000
commit01b708bc13d082079beb794a11e138b2ad890f83 (patch)
treee7453f51cb04a6fb685757cbed574bc8455e99af /src/tag.c
parent32a1f952e85d5c8f2f2c19dffecc05b4ee8364b2 (diff)
downloadmpd-01b708bc13d082079beb794a11e138b2ad890f83.tar.gz
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add support for parsing ape tags in musepack files
git-svn-id: https://svn.musicpd.org/mpd/trunk@3030 09075e82-0dd4-0310-85a5-a0d7c8717e4f
Diffstat (limited to 'src/tag.c')
-rw-r--r--src/tag.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/src/tag.c b/src/tag.c
index 7b1b8e837..41d76087c 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -217,6 +217,113 @@ MpdTag * id3Dup(char * file) {
return ret;
}
+MpdTag * apeDup(char * file) {
+ MpdTag * ret = NULL;
+ FILE * fp = NULL;
+ int tagCount;
+ unsigned char * buffer = NULL;
+ unsigned char * p;
+ int tagLen;
+ int size;
+ unsigned long flags;
+ int i;
+ unsigned char * key;
+
+ struct {
+ unsigned char id[8];
+ unsigned char version[4];
+ unsigned char length[4];
+ unsigned char tagCount[4];
+ unsigned char flags[4];
+ unsigned char reserved[8];
+ } footer;
+
+ char * apeItems[7] =
+ {
+ "title",
+ "artist",
+ "album",
+ "comment",
+ "genre",
+ "track",
+ "year"
+ };
+
+ int tagItems[7] =
+ {
+ TAG_ITEM_TITLE,
+ TAG_ITEM_ARTIST,
+ TAG_ITEM_ALBUM,
+ TAG_ITEM_COMMENT,
+ TAG_ITEM_GENRE,
+ TAG_ITEM_TRACK,
+ TAG_ITEM_DATE,
+ };
+
+ fp = fopen(file, "r");
+ if(!fp) return NULL;
+
+ /* determine if file has an apeV2 tag */
+ if(fseek(fp, 0, SEEK_END)) goto fail;
+ size = ftell(fp);
+ if(fseek(fp, size-sizeof(footer), SEEK_SET)) goto fail;
+ if(fread(&footer, 1, sizeof(footer), fp) != sizeof(footer)) goto fail;
+ if(memcmp(footer.id, "APETAGEX", sizeof(footer.id)) != 0) goto fail;
+ if(readLEuint32(footer.version) != 2000) goto fail;
+
+ /* find begining of ape tag */
+ tagLen = readLEuint32(footer.length);
+ if(tagLen < sizeof(footer)) goto fail;
+ if(fseek(fp, size-tagLen, SEEK_SET)) goto fail;
+
+ /* read tag into buffer */
+ tagLen -= sizeof(footer);
+ buffer = malloc(tagLen);
+ if(fread(buffer, 1, tagLen, fp) != tagLen) goto fail;
+
+ /* read tags */
+ tagCount = readLEuint32(footer.tagCount);
+ p = buffer;
+ while(tagCount-- && tagLen > 10) {
+ size = readLEuint32(p);
+ p += 4;
+ tagLen -= 4;
+ flags = readLEuint32(p);
+ p += 4;
+ tagLen -= 4;
+
+ /* get the key */
+ key = p;
+ while(tagLen-size > 0 && *p != '\0') {
+ p++;
+ tagLen--;
+ }
+ p++;
+ tagLen--;
+
+ /* get the value */
+ if(tagLen-size < 0) goto fail;
+
+ /* we only care about utf-8 text tags */
+ if(!(flags & (0x3 << 1))) {
+ for(i = 0; i < 7; i++) {
+ if(strcasecmp(key, apeItems[i]) == 0) {
+ if(!ret) ret = newMpdTag();
+ addItemToMpdTagWithLen(
+ ret, tagItems[i], p, size);
+ }
+ }
+ }
+ p += size;
+ tagLen -= size;
+ }
+
+fail:
+ if(fp) fclose(fp);
+ if(buffer) free(buffer);
+ return ret;
+}
+
MpdTag * newMpdTag() {
MpdTag * ret = malloc(sizeof(MpdTag));
ret->items = NULL;