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104 lines
2.6 KiB
104 lines
2.6 KiB
// test of DaisySP effect object for the Teensy audio library
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// just does audio passthru
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#include <Audio.h>
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#include <Metro.h>
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Metro five_sec=Metro(5000); // Set up a 5 second Metro
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Metro trigger=Metro(250); // envelope trigger
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#include "daisysp.h"
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using namespace daisysp;
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// including the source files is a pain but that way you compile in only the modules you need
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// DaisySP statically allocates memory and some modules e.g. reverb use a lot of ram
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// constants for integer to float and float to integer conversion
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//#define MULT_16 2147483647
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//#define DIV_16 4.6566129e-10
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#define MULT_16 2147483647
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#define DIV_16 3.05109e-5
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float samplerate=AUDIO_SAMPLE_RATE_EXACT;
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// create daisySP processing objects
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AudioInputI2S audioInput; // audio shield: mic or line-in
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AudioOutputI2S out;
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//AudioOutputUSB outUSB;
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AudioControlSGTL5000 audioShield;
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AudioEffectDaisySP effect; // create the daisysp effect audio object
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AudioConnection patchCord1(audioInput,0,effect,0); //mono input
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AudioConnection patchCord20(effect,0,out,0); // send to left and right out
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AudioConnection patchCord21(effect,0,out,1);
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//AudioConnection patchCord22(synth,0,outUSB,0);
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//AudioConnection patchCord23(synth,0,outUSB,1);
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// this is the function called by the AudioSynthDaisySP object when it needs a block of samples
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void AudioEffectDaisySP::update(void)
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{
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float in, out,sig;
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audio_block_t *block;
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// start of processing functions.
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block = receiveWritable(); // we will modify the samples in place
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if (!block) return;
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for (int s=0; s < AUDIO_BLOCK_SAMPLES; s++) {
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in=(float)block->data[s]*DIV_16; // convert -32767 to 32767 to -1.0 to +1.0
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//**** insert daisySP generators here
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out=in;
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// convert generated float value -1.0 to +1.0 to int16 used by Teensy Audio
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int32_t val = out*MULT_16;
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block->data[s] = val >> 16;
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}
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transmit(block);
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release(block);
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}
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void setup() {
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// Init Serial
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Serial.begin(38400);
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// wait for Arduino Serial Monitor to be ready
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// while (!Serial);
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Serial.println("starting setup");
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// Enable the AudioShield
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AudioMemory(10); // only need 2 blocks for 1 daisySP object
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audioShield.enable();
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audioShield.volume(0.3);
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Serial.println("finished setup");
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}
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float freq=1000.0, amp;
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void loop() {
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// audio stats
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if (five_sec.check() == 1)
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{
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Serial.print("Proc = ");
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Serial.print(AudioProcessorUsage());
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Serial.print(" (");
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Serial.print(AudioProcessorUsageMax());
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Serial.print("), Mem = ");
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Serial.print(AudioMemoryUsage());
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Serial.print(" (");
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Serial.print(AudioMemoryUsageMax());
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Serial.println(")");
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}
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}
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