FIxed the generator function. You have to use all available optimizations

(especially LTO) at compilation for getting high performance.
master
Holger Wirtz 6 years ago
parent e52f897867
commit 86f082b9cc
  1. 3
      MicroMDAPiano.ino
  2. 73
      mdaEPiano.cpp
  3. 4
      mdaEPiano.h

@ -215,7 +215,7 @@ void loop()
}
elapsedMicros t1;
ep->process(audio_buffer_l, audio_buffer_r, AUDIO_BLOCK_SAMPLES);
ep->process(audio_buffer_l, audio_buffer_r);
uint32_t t2 = t1;
if (t2 > audio_block_time_ms) // everything greater 2.9ms is a buffer underrun!
xrun++;
@ -231,6 +231,7 @@ void loop()
if (peak_l.read() > 0.99)
peak++;
}
#ifndef TEENSY_AUDIO_BOARD
for (uint8_t i = 0; i < AUDIO_BLOCK_SAMPLES; i++)
{

@ -332,14 +332,14 @@ float mdaEPiano::getParameter(int32_t index) {
}
*/
void mdaEPiano::process(int16_t *outputs_r, int16_t *outputs_l, int32_t sampleFrames)
void mdaEPiano::process(int16_t *outputs_r, int16_t *outputs_l)
{
int16_t v;
float x, l, r, od = overdrive;
int32_t i;
int16_t frame;
for (frame = 0; frame < sampleFrames; frame++)
for (frame = 0; frame < AUDIO_BLOCK_SAMPLES; frame++)
{
VOICE *V = voice;
l = r = 0.0f;
@ -348,64 +348,41 @@ void mdaEPiano::process(int16_t *outputs_r, int16_t *outputs_l, int32_t sampleFr
V->frac += V->delta; //integer-based linear interpolation
V->pos += V->frac >> 16;
V->frac &= 0xFFFF;
if (V->pos > V->end) V->pos -= V->loop;
//i = waves[V->pos];
//i = (i << 7) + (V->frac >> 9) * (waves[V->pos + 1] - i) + 0x40400000; //not working on intel mac !?!
//x = V->env * (*(float *)&i - 3.0f); //fast int->float
//x = V->env * (float)i / 32768.0f;
if (V->pos > V->end)
V->pos -= V->loop;
i = waves[V->pos] + ((V->frac * (waves[V->pos + 1] - waves[V->pos])) >> 16);
//x = V->env * (float)i / 32768.0f;
x = V->env * static_cast<float>(i) / 32768.0f;
V->env = V->env * V->dec; //envelope
//if(x>0.0f) { x -= od * x * x; if(x < -V->env) x = -V->env; } //+= 0.5f * x * x; } //overdrive
//l += V->outl * x;
//r += V->outr * x;
if (x > 0.0f) {
x -= od * x * x; //overdrive
if (x < -V->env) x = -V->env;
}
l += V->outl * x;
r += V->outr * x;
V++;
}
/*
tl += tfrq * (l - tl); //treble boost
tr += tfrq * (r - tr);
r += treb * (r - tr);
l += treb * (l - tl);
lfo0 += dlfo * lfo1; //LFO for tremolo and autopan
lfo1 -= dlfo * lfo0;
l += l * lmod * lfo1;
r += r * rmod * lfo1; //worth making all these local variables?
tl += tfrq * (l - tl); //treble boost
tr += tfrq * (r - tr);
r += treb * (r - tr);
l += treb * (l - tl);
outputs_l[v] = int16_t(l * 0xFFFF) >> REDUCE_LOUDNESS;
outputs_r[v] = int16_t(r * 0xFFFF) >> REDUCE_LOUDNESS;
*/
lfo0 += dlfo * lfo1; //LFO for tremolo and autopan
lfo1 -= dlfo * lfo0;
l += l * lmod * lfo1;
r += r * rmod * lfo1; //worth making all these local variables?
outputs_l[v] = i >> REDUCE_LOUDNESS;
outputs_r[v] = i >> REDUCE_LOUDNESS;
outputs_l[frame] = static_cast<int16_t>(l) >> REDUCE_LOUDNESS;
outputs_r[frame] = static_cast<int16_t>(r) >> REDUCE_LOUDNESS;
}
/*
if (frame < sampleFrames)
{
if (activevoices == 0 && programs[curProgram].param[4] > 0.5f)
{
lfo0 = -0.7071f; //reset LFO phase - good idea?
lfo1 = 0.7071f;
}
}
*/
if (fabs(tl) < 1.0e-10) tl = 0.0f; //anti-denormal
if (fabs(tr) < 1.0e-10) tr = 0.0f;
for (v = 0; v < activevoices; v++) if (voice[v].env < SILENCE) voice[v] = voice[--activevoices];
/*
for (v = 0; v < sampleFrames; v++)
{
outputs_r[v] = int16_t(o0[v] * 0xFFFF) >> REDUCE_LOUDNESS;
outputs_l[v] = int16_t(o1[v] * 0xFFFF) >> REDUCE_LOUDNESS;
}
*/
for (v = 0; v < activevoices; v++)
if (voice[v].env < SILENCE)
voice[v] = voice[--activevoices];
}
void mdaEPiano::noteOn(int32_t note, int32_t velocity)

@ -61,7 +61,7 @@ public:
mdaEPiano(); // mdaEPiano(audioMasterCallback audioMaster);
~mdaEPiano();
virtual void process(int16_t *outputs_r, int16_t *outputs_l, int32_t sampleFrames);
virtual void process(int16_t *outputs_r, int16_t *outputs_l);
virtual bool processMidiMessage(uint8_t type, uint8_t data1, uint8_t data2);
virtual void setProgram(int32_t program);
//virtual void setProgramName(char *name);
@ -98,6 +98,8 @@ private:
float Fs, iFs;
#define EVENTBUFFER 120
#define EVENTS_DONE 99999999
int32_t notes[EVENTBUFFER + 8]; //list of delta|note|velocity for current block
///global internal variables
KGRP kgrp[34];

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