diff --git a/src/streamfile.h b/src/streamfile.h
index bae85afc..22b94742 100644
--- a/src/streamfile.h
+++ b/src/streamfile.h
@@ -134,6 +134,18 @@ static inline int32_t read_32bitBE(off_t offset, STREAMFILE * streamfile) {
     if (read_streamfile(buf,offset,4,streamfile)!=4) return -1;
     return get_32bitBE(buf);
 }
+static inline int64_t read_64bitLE(off_t offset, STREAMFILE * streamfile) {
+    uint8_t buf[8];
+
+    if (read_streamfile(buf,offset,8,streamfile)!=8) return -1;
+    return get_64bitLE(buf);
+}
+static inline int64_t read_64bitBE(off_t offset, STREAMFILE * streamfile) {
+    uint8_t buf[8];
+
+    if (read_streamfile(buf,offset,8,streamfile)!=8) return -1;
+    return get_64bitBE(buf);
+}
 
 static inline int8_t read_8bit(off_t offset, STREAMFILE * streamfile) {
     uint8_t buf[1];
diff --git a/src/util.h b/src/util.h
index ef95e52a..43f4f1f3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -25,6 +25,14 @@ static inline int32_t get_32bitLE(uint8_t * p) {
     return (p[0]) | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
 }
 
+static inline int64_t get_64bitBE(uint8_t * p) {
+    return (uint64_t)(((uint64_t)p[0]<<56) | ((uint64_t)p[1]<<48) | ((uint64_t)p[2]<<40) | ((uint64_t)p[3]<<32) | ((uint64_t)p[4]<<24) | ((uint64_t)p[5]<<16) | ((uint64_t)p[6]<<8) | ((uint64_t)p[7]));
+}
+
+static inline int64_t get_64bitLE(uint8_t * p) {
+    return (uint64_t)(((uint64_t)p[0]) | ((uint64_t)p[1]<<8) | ((uint64_t)p[2]<<16) | ((uint64_t)p[3]<<24) | ((uint64_t)p[4]<<32) | ((uint64_t)p[5]<<40) | ((uint64_t)p[6]<<48) | ((uint64_t)p[7]<<56));
+}
+
 void put_8bit(uint8_t * buf, int8_t i);
 
 void put_16bitLE(uint8_t * buf, int16_t i);