Udp

common/network/webudp/WuBufferOp.h

@@ -0,0 +1,48 @@
+#pragma once
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+
+template <typename T>
+T ByteSwap(T v) {
+  if (sizeof(T) == 1) {
+    return v;
+  } else if (sizeof(T) == 2) {
+    return __builtin_bswap16(uint16_t(v));
+  } else if (sizeof(T) == 4) {
+    return __builtin_bswap32(uint32_t(v));
+  } else if (sizeof(T) == 8) {
+    return __builtin_bswap64(uint64_t(v));
+  } else {
+    assert(0);
+    return 0;
+  }
+}
+
+template <typename T>
+size_t WriteScalar(uint8_t* dest, T v) {
+  *((T*)dest) = v;
+  return sizeof(T);
+}
+
+template <typename T>
+int32_t ReadScalar(const uint8_t* src, T* v) {
+  *v = *(const T*)src;
+  return sizeof(T);
+}
+
+template <typename T>
+size_t WriteScalarSwapped(uint8_t* dest, T v) {
+  *((T*)dest) = ByteSwap(v);
+  return sizeof(T);
+}
+
+template <typename T>
+int32_t ReadScalarSwapped(const uint8_t* src, T* v) {
+  *v = ByteSwap(*(const T*)src);
+  return sizeof(T);
+}
+
+inline int32_t PadSize(int32_t numBytes, int32_t alignBytes) {
+  return ((numBytes + alignBytes - 1) & ~(alignBytes - 1)) - numBytes;
+}