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libraries/audio-tools/examples/tests/codecs/test-codec-base64/test-codec-base64.ino

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+/**
+ * @file communication-codec-test.ino
+ * @author Phil Schatzmann
+ * @brief generate sine wave -> encoder -> decoder -> audiokit (i2s)
+ * @version 0.1
+ * @date 2022-04-30
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */
+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+
+AudioInfo info(8000, 1, 16);
+SineWaveGenerator<int16_t> sineWave( 32000);  // subclass of SoundGenerator with max amplitude of 32000
+GeneratedSoundStream<int16_t> sound( sineWave); // Stream generated from sine wave
+AudioBoardStream out(AudioKitEs8388V1);
+EncodedAudioStream decoder(&out, new DecoderBase64()); // encode and write
+EncodedAudioStream encoder(&decoder, new EncoderBase64()); // encode and write
+StreamCopy copier(encoder, sound);     
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // start I2S
+  Serial.println("starting I2S...");
+  auto cfgi = out.defaultConfig(TX_MODE);
+  cfgi.copyFrom(info);
+  out.begin(cfgi);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+
+  // start decoder
+  decoder.begin();
+
+  // start encoder
+  encoder.begin(info);
+
+  Serial.println("Test started...");
+}
+
+
+void loop() { 
+  copier.copy();
+}