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render.cpp
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render.cpp
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#include <Watcher.h>
Watcher<double> myvar("myvar");
Watcher<unsigned int> myvar2("myvar2");
Watcher<unsigned int> myvar3("myvar3", WatcherManager::kTimestampSample);
#include <Bela.h>
#include <cmath>
float gFrequency = 440.0;
float gPhase;
float gInverseSampleRate;
bool setup(BelaContext *context, void *userData)
{
Bela_getDefaultWatcherManager()->setup(context->audioSampleRate);
Bela_getDefaultWatcherManager()->getGui().setup(context->projectName);
gInverseSampleRate = 1.0 / context->audioSampleRate;
gPhase = 0.0;
return true;
}
void render(BelaContext *context, void *userData)
{
static size_t count = 0;
if(count++ >= context->audioSampleRate * 0.6 / context->audioFrames)
{
rt_printf("%.5f %.5f\n\r", float(myvar), float(myvar2));
static int pastC = -1;
static int pastAC = -1;
int c = Bela_getDefaultWatcherManager()->getGui().numConnections();
int ac = Bela_getDefaultWatcherManager()->getGui().numActiveConnections();
if(c != pastC || ac != pastAC)
rt_printf("connected %d %d\n", c, ac);
pastC = c;
pastAC = ac;
count = 0;
}
for(unsigned int n = 0; n < context->audioFrames; n++) {
uint64_t frames = context->audioFramesElapsed + n;
Bela_getDefaultWatcherManager()->tick(frames, 0 == n);
if(frames % 10 == 0) // log a dense variable sparsely: bad
myvar = frames;
myvar2 = frames; // log a dense variable densely: good
if(frames % 12 == 0) // log a sparse variable sparsely: good
myvar3 = frames;
float out = 0.8 * sinf(gPhase);
gPhase += 2.0 * M_PI * gFrequency * gInverseSampleRate;
if(gPhase > 2.0 * M_PI)
gPhase -= 2.0 * M_PI;
for(unsigned int channel = 0; channel < context->audioOutChannels; channel++) {
audioWrite(context, n, channel, out);
}
}
}
void cleanup(BelaContext *context, void *userData)
{
}