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libraries/audio-tools/examples/tests/codecs/test-codec-codec2/test-codec-codec2.ino

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+/**
+ * @file communication-codec-test.ino
+ * @author Phil Schatzmann
+ * @brief generate sine wave -> encoder -> decoder -> csv (Serial)
+ * Unfortunately codec2 needs more stack then we have available in Arduino. So we do the processing
+ * in a separate task with a stack of 20k
+ * 
+ * @version 0.1
+ * @date 2022-04-30
+ * 
+ * @copyright Copyright (c) 2022
+ * 
+ */
+#include "AudioTools.h"
+#include "AudioTools/AudioCodecs/CodecCodec2.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
+//CsvOutput<int16_t> out(Serial, channels); 
+AudioBoardStream out(AudioKitEs8388V1);
+EncodedAudioStream decoder(&out, new Codec2Decoder()); // encode and write
+EncodedAudioStream encoder(&decoder, new Codec2Encoder()); // encode and write
+StreamCopy copier(encoder, sound);     
+
+
+void loop1(void*) {
+  // setup decoder
+  decoder.begin(info);
+  // setup encoder
+  encoder.begin(info);
+  // processing loop
+  while(true){
+    copier.copy();
+    delay(1);
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+
+  auto cfg = out.defaultConfig();
+  cfg.copyFrom(info);
+  out.begin(cfg);
+
+  int stack = 20000;
+  xTaskCreate(loop1,"loopTask", stack, nullptr,1, nullptr);
+
+  Serial.println("Test started...");
+}
+
+
+void loop() {
+}