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libraries/audio-tools/examples/tests/codecs/test-mp3-mad/test-mp3-mad.ino

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+/**
+ * @brief Testing MP3DecoderMAD
+ * 
+ */
+// install https://github.com/pschatzmann/arduino-libhelix.git
+
+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+#include "AudioTools/AudioCodecs/CodecMP3MAD.h"
+#include "BabyElephantWalk60_mp3.h"
+
+MemoryStream mp3(BabyElephantWalk60_mp3, BabyElephantWalk60_mp3_len);
+//CsvOutput<int16_t> out(Serial,2);  
+AudioBoardStream out(AudioKitEs8388V1);
+EncodedAudioStream decoder(&out, new MP3DecoderMAD()); // output to decoder
+StreamCopy copier(decoder, mp3);   
+
+void setup(){
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);  
+
+  // setup I2s
+  out.begin(out.defaultConfig());
+
+  decoder.begin();
+}
+
+void loop(){
+  copier.copy();
+}