1 files changed, 85 insertions, 0 deletions
diff --git a/chromium/net/quic/quic_bandwidth.h b/chromium/net/quic/quic_bandwidth.h
new file mode 100644
index 00000000000..71c4b2d9268
--- /dev/null
+++ b/chromium/net/quic/quic_bandwidth.h
@@ -0,0 +1,85 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// QuicBandwidth represents a bandwidth, stored in bits per second resolution.
+
+#ifndef NET_QUIC_QUIC_BANDWIDTH_H_
+#define NET_QUIC_QUIC_BANDWIDTH_H_
+
+#include "base/basictypes.h"
+#include "net/quic/quic_time.h"
+
+namespace net {
+
+typedef uint64 QuicByteCount;
+
+class NET_EXPORT_PRIVATE QuicBandwidth {
+
+ public:
+  // Creates a new QuicBandwidth with an internal value of 0.
+  static QuicBandwidth Zero();
+
+  // Create a new QuicBandwidth holding the bits per second.
+  static QuicBandwidth FromBitsPerSecond(int64 bits_per_second);
+
+  // Create a new QuicBandwidth holding the kilo bits per second.
+  static QuicBandwidth FromKBitsPerSecond(int64 k_bits_per_second);
+
+  // Create a new QuicBandwidth holding the bytes per second.
+  static QuicBandwidth FromBytesPerSecond(int64 bytes_per_second);
+
+  // Create a new QuicBandwidth holding the kilo bytes per second.
+  static QuicBandwidth FromKBytesPerSecond(int64 k_bytes_per_second);
+
+  // Create a new QuicBandwidth based on the bytes per the elapsed delta.
+  static QuicBandwidth FromBytesAndTimeDelta(QuicByteCount bytes,
+                                             QuicTime::Delta delta);
+
+  int64 ToBitsPerSecond() const;
+
+  int64 ToKBitsPerSecond() const;
+
+  int64 ToBytesPerSecond() const;
+
+  int64 ToKBytesPerSecond() const;
+
+  QuicByteCount ToBytesPerPeriod(QuicTime::Delta time_period) const;
+
+  int64 ToKBytesPerPeriod(QuicTime::Delta time_period) const;
+
+  bool IsZero() const;
+
+  QuicBandwidth Add(const QuicBandwidth& delta) const;
+
+  QuicBandwidth Subtract(const QuicBandwidth& delta) const;
+
+  QuicBandwidth Scale(float scale_factor) const;
+
+ private:
+  explicit QuicBandwidth(int64 bits_per_second);
+  int64 bits_per_second_;
+};
+
+// Non-member relational operators for QuicBandwidth.
+inline bool operator==(QuicBandwidth lhs, QuicBandwidth rhs) {
+  return lhs.ToBitsPerSecond() == rhs.ToBitsPerSecond();
+}
+inline bool operator!=(QuicBandwidth lhs, QuicBandwidth rhs) {
+  return !(lhs == rhs);
+}
+inline bool operator<(QuicBandwidth lhs, QuicBandwidth rhs) {
+  return lhs.ToBitsPerSecond() < rhs.ToBitsPerSecond();
+}
+inline bool operator>(QuicBandwidth lhs, QuicBandwidth rhs) {
+  return rhs < lhs;
+}
+inline bool operator<=(QuicBandwidth lhs, QuicBandwidth rhs) {
+  return !(rhs < lhs);
+}
+inline bool operator>=(QuicBandwidth lhs, QuicBandwidth rhs) {
+  return !(lhs < rhs);
+}
+
+}  // namespace net
+#endif  // NET_QUIC_QUIC_BANDWIDTH_H_