commit 8fe7995045197e9f332a0359ef833a30d5831c74
author Sebastian Jansson <srte@webrtc.org> Thu Jan 31 10:09:35 2019
committer Commit Bot <commit-bot@chromium.org> Thu Jan 31 11:31:55 2019
tree d209bea30ebb91861cb560d4f9b9554bb78cbedb
parent 813c79bff90515b7dd92383c6ba46a3f7bd990d4

Adds bytes per second to DataType class.

This is useful for internal calculations in bitrate control code as we
can skip conversion constants.

DataRate Example(TimeDelta time, DataSize size) {
 double time_seconds = time.seconds<double>();
 double size_bytes = size.bytes<double>();
 double rate_bytes_per_sec = size_bytes/time_seconds;
 return DataRate::bytes_per_sec(std::max(0.0,rate_bytes_per_sec));
}

Bug: webrtc:9709
Change-Id: I8eefed578b6e8eee67fc36af723216407e0d0323
Reviewed-on: https://webrtc-review.googlesource.com/c/120720
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26488}

api/units/data_rate.h

diff --git a/api/units/data_rate.h b/api/units/data_rate.h
index 8a3836d..9b09aa9 100644
--- a/api/units/data_rate.h
+++ b/api/units/data_rate.h
@@ -56,6 +56,11 @@
     return FromValue(bits_per_second);
   }
   template <typename T>
+  static constexpr DataRate bytes_per_sec(T bytes_per_second) {
+    static_assert(std::is_arithmetic<T>::value, "");
+    return FromFraction<8>(bytes_per_second);
+  }
+  template <typename T>
   static constexpr DataRate kbps(T kilobits_per_sec) {
     static_assert(std::is_arithmetic<T>::value, "");
     return FromFraction<1000>(kilobits_per_sec);
@@ -65,6 +70,10 @@
     return ToValue<T>();
   }
   template <typename T = int64_t>
+  constexpr T bytes_per_sec() const {
+    return ToFraction<8, T>();
+  }
+  template <typename T = int64_t>
   T kbps() const {
     return ToFraction<1000, T>();
   }