Export media_cas_proxy_sdk

util/endian/endian.h

@@ -0,0 +1,49 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2017 Google LLC.
+//
+// This software is licensed under the terms defined in the Widevine Master
+// License Agreement. For a copy of this agreement, please contact
+// widevine-licensing@google.com.
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef UTIL_ENDIAN_ENDIAN_H_
+#define UTIL_ENDIAN_ENDIAN_H_
+
+#include <netinet/in.h>
+#include <cstdint>
+
+
+namespace widevine {
+
+// Utilities to convert numbers between the current hosts's native byte
+// order and big-endian byte order (same as network byte order)
+class BigEndian {
+ public:
+  static uint32_t Load32(const char* data) {
+    return (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];
+  }
+
+  static uint64_t Load64(const char* data) {
+    return ((static_cast<uint64_t>(Load32(data)) << 32) | Load32(data + 4));
+  }
+
+  static void Store32(void* p, uint32_t data) {
+    for (int i = 0; i < 4; ++i)
+      (reinterpret_cast<uint8_t*>(p))[i] = (data >> ((3 - i) * 8)) & 0xFF;
+  }
+};      // BigEndian
+
+inline uint64_t gntohll(uint64_t n) {
+  uint64_t retval;
+#if __BYTE_ORDER == __BIG_ENDIAN
+  retval = n;
+#else
+  retval = ((uint64_t) ntohl(n & 0xFFFFFFFFLLU)) << 32;
+  retval |= ntohl((n & 0xFFFFFFFF00000000LLU) >> 32);
+#endif
+  return(retval);
+}
+
+}  // namespace widevine
+
+#endif  // UTIL_ENDIAN_ENDIAN_H_