1 files changed, 226 insertions, 0 deletions

diff --git a/src/common/timer.cpp b/src/common/timer.cpp
new file mode 100644
index 000000000..90604292e
--- /dev/null
+++ b/src/common/timer.cpp
@@ -0,0 +1,226 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <time.h>
+
+#ifdef _WIN32
+#include <Windows.h>
+#include <mmsystem.h>
+#include <sys/timeb.h>
+#else
+#include <sys/time.h>
+#endif
+
+#include "common.h"
+#include "timer.h"
+#include "string_util.h"
+
+namespace Common
+{
+
+u32 Timer::GetTimeMs()
+{
+#ifdef _WIN32
+    return timeGetTime();
+#else
+    struct timeval t;
+    (void)gettimeofday(&t, NULL);
+    return ((u32)(t.tv_sec * 1000 + t.tv_usec / 1000));
+#endif
+}
+
+// --------------------------------------------
+// Initiate, Start, Stop, and Update the time
+// --------------------------------------------
+
+// Set initial values for the class
+Timer::Timer()
+    : m_LastTime(0), m_StartTime(0), m_Running(false)
+{
+    Update();
+}
+
+// Write the starting time
+void Timer::Start()
+{
+    m_StartTime = GetTimeMs();
+    m_Running = true;
+}
+
+// Stop the timer
+void Timer::Stop()
+{
+    // Write the final time
+    m_LastTime = GetTimeMs();
+    m_Running = false;
+}
+
+// Update the last time variable
+void Timer::Update()
+{
+    m_LastTime = GetTimeMs();
+    //TODO(ector) - QPF
+}
+
+// -------------------------------------
+// Get time difference and elapsed time
+// -------------------------------------
+
+// Get the number of milliseconds since the last Update()
+u64 Timer::GetTimeDifference()
+{
+    return GetTimeMs() - m_LastTime;
+}
+
+// Add the time difference since the last Update() to the starting time.
+// This is used to compensate for a paused game.
+void Timer::AddTimeDifference()
+{
+    m_StartTime += GetTimeDifference();
+}
+
+// Get the time elapsed since the Start()
+u64 Timer::GetTimeElapsed()
+{
+    // If we have not started yet, return 1 (because then I don't
+    // have to change the FPS calculation in CoreRerecording.cpp .
+    if (m_StartTime == 0) return 1;
+
+    // Return the final timer time if the timer is stopped
+    if (!m_Running) return (m_LastTime - m_StartTime);
+
+    return (GetTimeMs() - m_StartTime);
+}
+
+// Get the formatted time elapsed since the Start()
+std::string Timer::GetTimeElapsedFormatted() const
+{
+    // If we have not started yet, return zero
+    if (m_StartTime == 0)
+        return "00:00:00:000";
+
+    // The number of milliseconds since the start.
+    // Use a different value if the timer is stopped.
+    u64 Milliseconds;
+    if (m_Running)
+        Milliseconds = GetTimeMs() - m_StartTime;
+    else
+        Milliseconds = m_LastTime - m_StartTime;
+    // Seconds
+    u32 Seconds = (u32)(Milliseconds / 1000);
+    // Minutes
+    u32 Minutes = Seconds / 60;
+    // Hours
+    u32 Hours = Minutes / 60;
+
+    std::string TmpStr = StringFromFormat("%02i:%02i:%02i:%03i",
+        Hours, Minutes % 60, Seconds % 60, Milliseconds % 1000);
+    return TmpStr;
+}
+
+// Get current time
+void Timer::IncreaseResolution()
+{
+#ifdef _WIN32
+    timeBeginPeriod(1);
+#endif
+}
+
+void Timer::RestoreResolution()
+{
+#ifdef _WIN32
+    timeEndPeriod(1);
+#endif
+}
+
+// Get the number of seconds since January 1 1970
+u64 Timer::GetTimeSinceJan1970()
+{
+    time_t ltime;
+    time(&ltime);
+    return((u64)ltime);
+}
+
+u64 Timer::GetLocalTimeSinceJan1970()
+{
+    time_t sysTime, tzDiff, tzDST;
+    struct tm * gmTime;
+
+    time(&sysTime);
+
+    // Account for DST where needed
+    gmTime = localtime(&sysTime);
+    if(gmTime->tm_isdst == 1)
+        tzDST = 3600;
+    else
+        tzDST = 0;
+
+    // Lazy way to get local time in sec
+    gmTime    = gmtime(&sysTime);
+    tzDiff = sysTime - mktime(gmTime);
+
+    return (u64)(sysTime + tzDiff + tzDST);
+}
+
+// Return the current time formatted as Minutes:Seconds:Milliseconds
+// in the form 00:00:000.
+std::string Timer::GetTimeFormatted()
+{
+    time_t sysTime;
+    struct tm * gmTime;
+    char formattedTime[13];
+    char tmp[13];
+
+    time(&sysTime);
+    gmTime = localtime(&sysTime);
+
+    strftime(tmp, 6, "%M:%S", gmTime);
+
+    // Now tack on the milliseconds
+#ifdef _WIN32
+    struct timeb tp;
+    (void)::ftime(&tp);
+    sprintf(formattedTime, "%s:%03i", tmp, tp.millitm);
+#else
+    struct timeval t;
+    (void)gettimeofday(&t, NULL);
+    sprintf(formattedTime, "%s:%03d", tmp, (int)(t.tv_usec / 1000));
+#endif
+
+    return std::string(formattedTime);
+}
+
+// Returns a timestamp with decimals for precise time comparisons
+// ----------------
+double Timer::GetDoubleTime()
+{
+#ifdef _WIN32
+    struct timeb tp;
+    (void)::ftime(&tp);
+#else
+    struct timeval t;
+    (void)gettimeofday(&t, NULL);
+#endif
+    // Get continuous timestamp
+    u64 TmpSeconds = Common::Timer::GetTimeSinceJan1970();
+
+    // Remove a few years. We only really want enough seconds to make
+    // sure that we are detecting actual actions, perhaps 60 seconds is
+    // enough really, but I leave a year of seconds anyway, in case the
+    // user's clock is incorrect or something like that.
+    TmpSeconds = TmpSeconds - (38 * 365 * 24 * 60 * 60);
+
+    // Make a smaller integer that fits in the double
+    u32 Seconds = (u32)TmpSeconds;
+#ifdef _WIN32
+    double ms = tp.millitm / 1000.0 / 1000.0;
+#else
+    double ms = t.tv_usec / 1000000.0;
+#endif
+    double TmpTime = Seconds + ms;
+
+    return TmpTime;
+}
+
+} // Namespace Common