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libraries/audio-tools/tests-cmake/codec/opusogg/opusogg.cpp

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+/**
+ * @file test-codec-opusogg.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/AudioCodecs/CodecOpusOgg.h"
+
+int application = OPUS_APPLICATION_AUDIO; // Opus application
+AudioInfo info(24000, 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);   // Output of sound on desktop 
+OpusOggEncoder enc;
+OpusOggDecoder dec;
+EncodedAudioStream decoder(&out, &dec); // encode and write 
+EncodedAudioStream encoder(&decoder, &enc); // encode and write 
+StreamCopy copier(encoder, sound);     
+
+void setup() {
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // Setup output
+  auto cfgo = out.defaultConfig();
+  cfgo.copyFrom(info);
+  out.begin(cfgo);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+
+  // Opus decoder needs to know the audio info
+  decoder.begin(info);
+
+  // configure and start encoder
+  enc.config().application = application;
+  encoder.begin(info);
+
+  Serial.println("Test started...");
+}
+
+
+void loop() { 
+  copier.copy();
+}