Add EMMG to carry fingerprinting and service blocking info

util/endian/endian.h

@@ -10,6 +10,7 @@
 #define UTIL_ENDIAN_ENDIAN_H_
 
 #include <netinet/in.h>
+
 #include <cstdint>
 
 
@@ -19,7 +20,8 @@ namespace widevine {
 // order and big-endian byte order (same as network byte order)
 class BigEndian {
  public:
-  static uint32_t Load32(const char* data) {
+  static uint32_t Load32(const char* indata) {
+    const uint8_t* data = reinterpret_cast<const uint8_t*>(indata);
     return (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];
   }