66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/**
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* @file player-sdfat-ffti2s.ino
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* @brief Audio Player with output to I2S and FFT
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*
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* @author Phil Schatzmann
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* @copyright GPLv3
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*/
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#include "AudioTools.h"
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#include "AudioTools/Disk/AudioSourceSD.h"
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#include "AudioTools/AudioCodecs/CodecMP3Helix.h"
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#include "AudioTools/AudioLibs/AudioRealFFT.h" // or AudioKissFFT or others
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const char *startFilePath="/";
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const char* ext="mp3";
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AudioSourceSD source(startFilePath, ext);
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MultiOutput multi_output;
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MP3DecoderHelix decoder;
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AudioPlayer player(source, multi_output, decoder);
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I2SStream i2s; // output to i2s
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AudioRealFFT fft; // or AudioKissFFT or others
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// display fft result
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void fftResult(AudioFFTBase &fft){
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float diff;
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auto result = fft.result();
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if (result.magnitude>100){
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Serial.print(result.frequency);
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Serial.print(" ");
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Serial.print(result.magnitude);
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Serial.print(" => ");
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Serial.print(result.frequencyAsNote(diff));
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Serial.print( " diff: ");
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Serial.println(diff);
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}
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}
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void setup() {
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
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// setup I2S
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auto cfg = i2s.defaultConfig(TX_MODE);
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i2s.begin(cfg);
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// Setup FFT
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auto tcfg = fft.defaultConfig();
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tcfg.copyFrom(cfg);
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tcfg.length = 1024;
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tcfg.callback = &fftResult;
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fft.begin(tcfg);
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// Setup Multioutput
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multi_output.add(fft);
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multi_output.add(i2s);
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// setup player
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//source.setFileFilter("*Bob Dylan*");
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player.begin();
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}
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void loop() {
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player.copy();
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}
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