Added AudioEffectDaisySP object which takes one input and produces one outputmain
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/* Audio Library for Teensy 3.X
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* Copyright (c) 2016, Paul Stoffregen, paul@pjrc.com |
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* |
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* Development of this audio library was funded by PJRC.COM, LLC by sales of |
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop |
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* open source software by purchasing Teensy or other PJRC products. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice, development funding notice, and this permission |
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* notice shall be included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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// RH June 14 2021 - an effect that uses the DaisySP DSP library to process audio
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// its an effect - it has one input and generates one output
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// normally AudioEffectDaisySP:update() will be in your sketch - its the equivalent of Daisylib's Audiocallback function
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#ifndef effect_daisysp_h_ |
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#define effect_daisysp_h_ |
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#include "Arduino.h" |
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#include "AudioStream.h" |
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class AudioEffectDaisySP: public AudioStream |
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{ |
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public: |
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AudioEffectDaisySP(void) : AudioStream(1, inputQueueArray) {} |
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virtual void update(void); |
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private: |
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audio_block_t *inputQueueArray[1]; |
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}; |
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#endif |
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// 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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