AudioMidiSyncHelper Struct Reference

#include <DistrhoPluginUtils.hpp>

Public Member Functions
	AudioMidiSyncHelper (float **const o, uint32_t f, const MidiEvent *m, uint32_t mc)
bool	nextEvent ()

Public Attributes
float *	outputs [2]
uint32_t	frames
const MidiEvent *	midiEvents
uint32_t	midiEventCount

Detailed Description

Handy class to help keep audio buffer in sync with incoming MIDI events. To use it, create a local variable (on the stack) and call nextEvent() until it returns false.

for (AudioMidiSyncHelper amsh(outputs, frames, midiEvents, midiEventCount); amsh.nextEvent();)
{
    float* const outL = amsh.outputs[0];
    float* const outR = amsh.outputs[1];
 
    for (uint32_t i=0; i<amsh.midiEventCount; ++i)
    {
        const MidiEvent& ev(amsh.midiEvents[i]);
        // ... do something with the midi event
    }
 
    renderSynth(outL, outR, amsh.frames);
}

Some important notes when using this class:

1. MidiEvent::frame retains its original value, but it is useless, do not use it.
2. The class variable names are the same as the default ones in the run function. Keep that in mind and try to avoid typos. :)

Constructor & Destructor Documentation

AudioMidiSyncHelper()

AudioMidiSyncHelper::AudioMidiSyncHelper ( float **const  o, uint32_t  f, const MidiEvent *  m, uint32_t  mc  )

inline

Constructor, using values from the run function.

Member Function Documentation

nextEvent()

bool AudioMidiSyncHelper::nextEvent ( )

inline

Process a batch of events untill no more are available. You must not read any more values from this class after this function returns false.

Member Data Documentation

outputs

float* AudioMidiSyncHelper::outputs[2]

Parameters from the run function, adjusted for event sync

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The documentation for this struct was generated from the following file:

• distrho/DistrhoPluginUtils.hpp