code: function getTagValues(littleEndian, dirEntries) {
          var TAG_VAL_OFFSET = 16,
              tagsToFind = qq.extend([], TAG_IDS),
              vals = {};
  
          qq.each(dirEntries, function(idx, entry) {
              var idHex = entry.slice(0, 4),
                  id = littleEndian ? parseLittleEndian(idHex) : parseInt(idHex, 16),
                  tagsToFindIdx = tagsToFind.indexOf(id),
                  tagValHex, tagName, tagValLength;
  
              if (tagsToFindIdx >= 0) {
                  tagName = TAG_INFO[id].name;
                  tagValLength = TAG_INFO[id].bytes;
                  tagValHex = entry.slice(TAG_VAL_OFFSET, TAG_VAL_OFFSET + (tagValLength * 2));
                  vals[tagName] = littleEndian ? parseLittleEndian(tagValHex) : parseInt(tagValHex, 16);
  
                  tagsToFind.splice(tagsToFindIdx, 1);
              }
  
              if (tagsToFind.length === 0) {
                  return false;
              }
          });
  
          return vals;
      }
docs: Obtain values for all relevant tags and return them.