040000 tree 75031a3a50a14535f16d2ea56c4cc4634768fa91	decoder
040000 tree 33e4be68b06b31452a3a96f79c48b9a7dbf87bb8	generic
040000 tree 84b454219759bbf70faf2c5bca7028264718abd7	proto
040000 tree 4a101552e2592c13daa2739c5cf15aa717e889cb	util