int perform(jack_nframes_t frames)
{
if (unlikely(!time_is_synced)) {
engine_functor::sync_clock();
time_is_synced = true;
}
/* get port regions */
jack_default_audio_sample_t ** inputs = (jack_default_audio_sample_t **)alloca(input_channels * sizeof(jack_default_audio_sample_t*));
jack_default_audio_sample_t ** outputs = (jack_default_audio_sample_t **)alloca(output_channels * sizeof(jack_default_audio_sample_t*));
for (uint16_t i = 0; i != input_channels; ++i)
inputs[i] = (jack_default_audio_sample_t*) jack_port_get_buffer(input_ports[i], frames);
for (uint16_t i = 0; i != output_channels; ++i)
outputs[i] = (jack_default_audio_sample_t*) jack_port_get_buffer(output_ports[i], frames);
jack_nframes_t processed = 0;
while (processed != frames) {
super::fetch_inputs((const float**)inputs, blocksize_, input_channels);
engine_functor::run_tick();
super::deliver_outputs(outputs, blocksize_, output_channels);
processed += blocksize_;
}
cpu_time_accumulator.update(jack_cpu_load(client));
return 0;
}
float cpuLoad(void)
{
if (client != NULL) {
float load = (float)jack_cpu_load(client);
return load;
}
return 0.0f;
}
static PyObject* get_cpu_load(PyObject* self, PyObject* args)
{
pyjack_client_t * client = self_or_global_client(self);
if(client->pjc == NULL) {
PyErr_SetString(JackNotConnectedError, "Jack connection has not yet been established.");
return NULL;
}
float cpu_load = jack_cpu_load(client->pjc);
return Py_BuildValue("f", cpu_load);
}
int
process (jack_nframes_t nframes, void *arg)
{
jack_default_audio_sample_t *in, *out;
int i;
in = jack_port_get_buffer (input_port, nframes);
out = jack_port_get_buffer (output_port, nframes);
memcpy (out, in, sizeof (jack_default_audio_sample_t) * nframes);
for (i = 0; i < loopsize; ++i) {
fooey (nframes);
}
last_load = jack_cpu_load (client);
if ((at_loop += nframes) >= at_loop_size) {
if (last_load < 25.0f) {
loopsize *= 2;
} else if (last_load < 50.0f) {
loopsize = (int) (1.5 * loopsize);
} else if (last_load < 90.0f) {
loopsize += (int) (0.10 * loopsize);
} else if (last_load < 95.0f) {
loopsize += (int) (0.05 * loopsize);
} else {
loopsize += (int) (0.001 * loopsize);
}
at_loop = 0;
printf ("loopsize = %d\n", loopsize);
}
if (xrun_occured) {
if (consecutive_xruns == 0) {
first_xrun = last_load;
}
consecutive_xruns++;
}
xrun_occured = 0;
if (consecutive_xruns >= 10) {
fprintf (stderr, "Stopping with load = %f (first xrun at %f)\n", last_load, first_xrun);
exit (0);
}
return 0;
}
static int _cpu_load(ClientData clientData, Tcl_Interp *interp, int argc, Tcl_Obj* const *objv) {
_t *dp = (_t *)clientData;
if (argc != 2) return fw_error_str(interp, "jack-client cpu-load");
Tcl_SetObjResult(interp, Tcl_NewDoubleObj(jack_cpu_load(dp->fw.client)));
return TCL_OK;
}
void SC_JackDriver::Run()
{
jack_client_t* client = mClient;
World* world = mWorld;
#ifdef SC_JACK_USE_DLL
mDLL.Update(secondsSinceEpoch(getTime()));
#if SC_JACK_DEBUG_DLL
static int tick = 0;
if (++tick >= 10) {
tick = 0;
scprintf("DLL: t %.6f p %.9f sr %.6f e %.9f avg(e) %.9f inc %.9f\n",
mDLL.PeriodTime(), mDLL.Period(), mDLL.SampleRate(),
mDLL.Error(), mDLL.AvgError(), mOSCincrement * kOSCtoSecs);
}
#endif
#else
HostTime hostTime = getTime();
double hostSecs = secondsSinceEpoch(hostTime);
double sampleTime = (double)(jack_frame_time(client) + jack_frames_since_cycle_start(client));
if (mStartHostSecs == 0) {
mStartHostSecs = hostSecs;
mStartSampleTime = sampleTime;
} else {
double instSampleRate = (sampleTime - mPrevSampleTime) / (hostSecs - mPrevHostSecs);
double smoothSampleRate = mSmoothSampleRate;
smoothSampleRate = smoothSampleRate + 0.002 * (instSampleRate - smoothSampleRate);
if (fabs(smoothSampleRate - mSampleRate) > 10.) {
smoothSampleRate = mSampleRate;
}
mOSCincrement = (int64)(mOSCincrementNumerator / smoothSampleRate);
mSmoothSampleRate = smoothSampleRate;
#if 0
double avgSampleRate = (sampleTime - mStartSampleTime)/(hostSecs - mStartHostSecs);
double jitter = (smoothSampleRate * (hostSecs - mPrevHostSecs)) - (sampleTime - mPrevSampleTime);
double drift = (smoothSampleRate - mSampleRate) * (hostSecs - mStartHostSecs);
#endif
}
mPrevHostSecs = hostSecs;
mPrevSampleTime = sampleTime;
#endif
try {
mFromEngine.Free();
mToEngine.Perform();
mOscPacketsToEngine.Perform();
int numInputs = mInputList->mSize;
int numOutputs = mOutputList->mSize;
jack_port_t **inPorts = mInputList->mPorts;
jack_port_t **outPorts = mOutputList->mPorts;
sc_jack_sample_t **inBuffers = mInputList->mBuffers;
sc_jack_sample_t **outBuffers = mOutputList->mBuffers;
int numSamples = NumSamplesPerCallback();
int bufFrames = mWorld->mBufLength;
int numBufs = numSamples / bufFrames;
float *inBuses = mWorld->mAudioBus + mWorld->mNumOutputs * bufFrames;
float *outBuses = mWorld->mAudioBus;
int32 *inTouched = mWorld->mAudioBusTouched + mWorld->mNumOutputs;
int32 *outTouched = mWorld->mAudioBusTouched;
int minInputs = sc_min(numInputs, (int)mWorld->mNumInputs);
int minOutputs = sc_min(numOutputs, (int)mWorld->mNumOutputs);
int bufFramePos = 0;
// cache I/O buffers
for (int i = 0; i < minInputs; ++i) {
inBuffers[i] = (sc_jack_sample_t*)jack_port_get_buffer(inPorts[i], numSamples);
}
for (int i = 0; i < minOutputs; ++i) {
outBuffers[i] = (sc_jack_sample_t*)jack_port_get_buffer(outPorts[i], numSamples);
}
// main loop
#ifdef SC_JACK_USE_DLL
int64 oscTime = mOSCbuftime = (int64)((mDLL.PeriodTime() - mMaxOutputLatency) * kSecondsToOSCunits + .5);
// int64 oscInc = mOSCincrement = (int64)(mOSCincrementNumerator / mDLL.SampleRate());
int64 oscInc = mOSCincrement = (int64)((mDLL.Period() / numBufs) * kSecondsToOSCunits + .5);
mSmoothSampleRate = mDLL.SampleRate();
double oscToSamples = mOSCtoSamples = mSmoothSampleRate * kOSCtoSecs /* 1/pow(2,32) */;
#else
int64 oscTime = mOSCbuftime = OSCTime(hostTime) - (int64)(mMaxOutputLatency * kSecondsToOSCunits + .5);
int64 oscInc = mOSCincrement;
double oscToSamples = mOSCtoSamples;
#endif
for (int i = 0; i < numBufs; ++i, mWorld->mBufCounter++, bufFramePos += bufFrames) {
int32 bufCounter = mWorld->mBufCounter;
int32 *tch;
// copy+touch inputs
tch = inTouched;
for (int k = 0; k < minInputs; ++k) {
sc_jack_sample_t *src = inBuffers[k] + bufFramePos;
float *dst = inBuses + k * bufFrames;
for (int n = 0; n < bufFrames; ++n) {
*dst++ = *src++;
}
*tch++ = bufCounter;
}
// run engine
int64 schedTime;
int64 nextTime = oscTime + oscInc;
while ((schedTime = mScheduler.NextTime()) <= nextTime) {
float diffTime = (float)(schedTime - oscTime) * oscToSamples + 0.5;
float diffTimeFloor = floor(diffTime);
world->mSampleOffset = (int)diffTimeFloor;
world->mSubsampleOffset = diffTime - diffTimeFloor;
if (world->mSampleOffset < 0) world->mSampleOffset = 0;
else if (world->mSampleOffset >= world->mBufLength) world->mSampleOffset = world->mBufLength-1;
SC_ScheduledEvent event = mScheduler.Remove();
event.Perform();
}
world->mSampleOffset = 0;
world->mSubsampleOffset = 0.f;
World_Run(world);
// copy touched outputs
tch = outTouched;
for (int k = 0; k < minOutputs; ++k) {
sc_jack_sample_t *dst = outBuffers[k] + bufFramePos;
if (*tch++ == bufCounter) {
float *src = outBuses + k * bufFrames;
for (int n = 0; n < bufFrames; ++n) {
*dst++ = *src++;
}
} else {
for (int n = 0; n < bufFrames; ++n) {
*dst++ = 0.0f;
}
}
}
// advance OSC time
mOSCbuftime = oscTime = nextTime;
}
} catch (std::exception& exc) {
scprintf("%s: exception in real time: %s\n", kJackDriverIdent, exc.what());
} catch (...) {
scprintf("%s: unknown exception in real time\n", kJackDriverIdent);
}
double cpuUsage = (double)jack_cpu_load(mClient);
mAvgCPU = mAvgCPU + 0.1 * (cpuUsage - mAvgCPU);
if (cpuUsage > mPeakCPU || --mPeakCounter <= 0) {
mPeakCPU = cpuUsage;
mPeakCounter = mMaxPeakCounter;
}
mAudioSync.Signal();
}
float JackAudioSystem::dsp_load()
{
if( !_client ) return -1;
return jack_cpu_load(_client)/100.0;
}
int JackProfiler::Process(jack_nframes_t nframes, void* arg)
{
JackProfiler* profiler = static_cast<JackProfiler*>(arg);
if (profiler->fCPULoadPort) {
float* buffer_cpu_load = (float*)jack_port_get_buffer(profiler->fCPULoadPort, nframes);
float cpu_load = jack_cpu_load(profiler->fClient);
for (unsigned int i = 0; i < nframes; i++) {
buffer_cpu_load[i] = cpu_load / 100.f;
}
}
#ifdef JACK_MONITOR
JackEngineControl* control = JackServerGlobals::fInstance->GetEngineControl();
JackEngineProfiling* engine_profiler = &control->fProfiler;
JackTimingMeasure* measure = engine_profiler->GetCurMeasure();
if (profiler->fLastMeasure && profiler->fMutex.Trylock()) {
if (profiler->fDriverPeriodPort) {
float* buffer_driver_period = (float*)jack_port_get_buffer(profiler->fDriverPeriodPort, nframes);
float value1 = (float(measure->fPeriodUsecs) - float(measure->fCurCycleBegin - profiler->fLastMeasure->fCurCycleBegin)) / float(measure->fPeriodUsecs);
for (unsigned int i = 0; i < nframes; i++) {
buffer_driver_period[i] = value1;
}
}
if (profiler->fDriverEndPort) {
float* buffer_driver_end_time = (float*)jack_port_get_buffer(profiler->fDriverEndPort, nframes);
float value2 = (float(measure->fPrevCycleEnd - profiler->fLastMeasure->fCurCycleBegin)) / float(measure->fPeriodUsecs);
for (unsigned int i = 0; i < nframes; i++) {
buffer_driver_end_time[i] = value2;
}
}
std::map<std::string, JackProfilerClient*>::iterator it;
for (it = profiler->fClientTable.begin(); it != profiler->fClientTable.end(); it++) {
int ref = (*it).second->fRefNum;
long d5 = long(measure->fClientTable[ref].fSignaledAt - profiler->fLastMeasure->fCurCycleBegin);
long d6 = long(measure->fClientTable[ref].fAwakeAt - profiler->fLastMeasure->fCurCycleBegin);
long d7 = long(measure->fClientTable[ref].fFinishedAt - profiler->fLastMeasure->fCurCycleBegin);
float* buffer_scheduling = (float*)jack_port_get_buffer((*it).second->fSchedulingPort, nframes);
float value3 = float(d6 - d5) / float(measure->fPeriodUsecs);
jack_log("Scheduling %f", value3);
for (unsigned int i = 0; i < nframes; i++) {
buffer_scheduling[i] = value3;
}
float* buffer_duration = (float*)jack_port_get_buffer((*it).second->fDurationPort, nframes);
float value4 = float(d7 - d6) / float(measure->fPeriodUsecs);
jack_log("Duration %f", value4);
for (unsigned int i = 0; i < nframes; i++) {
buffer_duration[i] = value4;
}
}
profiler->fMutex.Unlock();
}
profiler->fLastMeasure = measure;
#endif
return 0;
}
float JackCpp::AudioIO::getCpuLoad(){
return jack_cpu_load(mJackClient);
}
static SCM get_duty_cycle() {
if (use_jack)
return scm_from_double((double)jack_cpu_load(jack_client));
return scm_from_double(duty_cycle * 100);
}
float luajack_cpu_load(luajack_t *client)
{
cud_t *cud = get_cud(client);
if(!cud) return 0;
return jack_cpu_load(cud->client);
}
