anonymous_namespace{MIDIPlay.cpp} Namespace Reference

Classes
struct	InitializeTime

Enumerations
enum	{ MIDI_MINIMAL_LATENCY_MS = 1 }

Functions
static double	util_GetTime (void)
static double	SystemTime (bool usingAlsa)
PmTimestamp	MidiTime (void *pInfo)

Variables
static int	usePerformanceCounter_
static double	secondsPerTick_
static struct anonymous_namespace{MIDIPlay.cpp}::InitializeTime	initializeTime
static double	streamStartTime = 0
AudioIOExt::RegisteredFactory	sMIDIPlayFactory

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
MIDI_MINIMAL_LATENCY_MS

Definition at line 476 of file MIDIPlay.cpp.

     {
   // This is the least positive latency we can
   // specify to Pm_OpenOutput, 1 ms, which prevents immediate
   // scheduling of events:
   MIDI_MINIMAL_LATENCY_MS = 1
};

Function Documentation

MidiTime()

PmTimestamp anonymous_namespace{MIDIPlay.cpp}::MidiTime

(

void *

pInfo

)

Definition at line 608 of file MIDIPlay.cpp.

{
   return static_cast<MIDIPlay*>(pInfo)->MidiTime();
}

References MidiTime().

Referenced by MidiTime().

Here is the call graph for this function:

Here is the caller graph for this function:

SystemTime()

static double anonymous_namespace{MIDIPlay.cpp}::SystemTime ( bool  usingAlsa )

static

Definition at line 486 of file MIDIPlay.cpp.

{
#ifdef __WXGTK__
   if (usingAlsa) {
      struct timespec now;
      // CLOCK_MONOTONIC_RAW is unaffected by NTP or adj-time
#if defined(CLOCK_MONOTONIC_RAW)
      clock_gettime(CLOCK_MONOTONIC_RAW, &now);
#else
      clock_gettime(CLOCK_REALTIME, &now);
#endif
      //return now.tv_sec + now.tv_nsec * 0.000000001;
      return (now.tv_sec + now.tv_nsec * 0.000000001) - streamStartTime;
   }
#else
   static_cast<void>(usingAlsa);//compiler food.
#endif
 
   return util_GetTime() - streamStartTime;
}

References streamStartTime, and util_GetTime().

Referenced by anonymous_namespace{MIDIPlay.h}::MIDIPlay::ComputeOtherTimings(), anonymous_namespace{MIDIPlay.h}::MIDIPlay::MidiTime(), and anonymous_namespace{MIDIPlay.h}::MIDIPlay::StartOtherStream().

Here is the call graph for this function:

Here is the caller graph for this function:

util_GetTime()

static double anonymous_namespace{MIDIPlay.cpp}::util_GetTime ( void  )

static

Definition at line 420 of file MIDIPlay.cpp.

{
    LARGE_INTEGER time;
 
    if( usePerformanceCounter_ )
    {
        /*
            Note: QueryPerformanceCounter has a known issue where it can skip forward
            by a few seconds (!) due to a hardware bug on some PCI-ISA bridge hardware.
            This is documented here:
            http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q274323&
 
            The work-arounds are not very paletable and involve querying GetTickCount
            at every time step.
 
            Using rdtsc is not a good option on multi-core systems.
 
            For now we just use QueryPerformanceCounter(). It's good, most of the time.
        */
        QueryPerformanceCounter( &time );
        return time.QuadPart * secondsPerTick_;
    }
    else
    {
   #if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
        return GetTickCount64() * .001;
   #else
        return timeGetTime() * .001;
   #endif
    }
}

References secondsPerTick_, and usePerformanceCounter_.

Referenced by SystemTime().

Here is the caller graph for this function:

Variable Documentation

initializeTime

struct anonymous_namespace{MIDIPlay.cpp}::InitializeTime anonymous_namespace{MIDIPlay.cpp}::initializeTime

static

secondsPerTick_

double anonymous_namespace{MIDIPlay.cpp}::secondsPerTick_

static

Definition at line 404 of file MIDIPlay.cpp.

Referenced by anonymous_namespace{MIDIPlay.cpp}::InitializeTime::InitializeTime(), and util_GetTime().

sMIDIPlayFactory

AudioIOExt::RegisteredFactory anonymous_namespace{MIDIPlay.cpp}::sMIDIPlayFactory

Initial value:

{
   [](const auto &playbackSchedule){
      return std::make_unique<MIDIPlay>(playbackSchedule);
   }
}

Definition at line 510 of file MIDIPlay.cpp.

streamStartTime

double anonymous_namespace{MIDIPlay.cpp}::streamStartTime = 0

static

Definition at line 484 of file MIDIPlay.cpp.

Referenced by FFmpegImportFileHandle::Import(), anonymous_namespace{MIDIPlay.h}::MIDIPlay::StartOtherStream(), and SystemTime().

usePerformanceCounter_

int anonymous_namespace{MIDIPlay.cpp}::usePerformanceCounter_

static

Definition at line 403 of file MIDIPlay.cpp.

Referenced by anonymous_namespace{MIDIPlay.cpp}::InitializeTime::InitializeTime(), and util_GetTime().